File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
new file mode 100644
index 0000000..ec6af15
--- /dev/null
+++ b/drivers/bluetooth/Kconfig
@@ -0,0 +1,323 @@
+
+menu "Bluetooth device drivers"
+ depends on BT
+
+config BT_INTEL
+ tristate
+ select REGMAP
+
+config BT_BCM
+ tristate
+ select FW_LOADER
+
+config BT_RTL
+ tristate
+ select FW_LOADER
+
+config BT_QCA
+ tristate
+ select FW_LOADER
+
+config BT_HCIBTUSB
+ tristate "HCI USB driver"
+ depends on USB
+ select BT_INTEL
+ help
+ Bluetooth HCI USB driver.
+ This driver is required if you want to use Bluetooth devices with
+ USB interface.
+
+ Say Y here to compile support for Bluetooth USB devices into the
+ kernel or say M to compile it as module (btusb).
+
+config BT_HCIBTUSB_BCM
+ bool "Broadcom protocol support"
+ depends on BT_HCIBTUSB
+ select BT_BCM
+ default y
+ help
+ The Broadcom protocol support enables firmware and patchram
+ download support for Broadcom Bluetooth controllers.
+
+ Say Y here to compile support for Broadcom protocol.
+
+config BT_HCIBTUSB_RTL
+ bool "Realtek protocol support"
+ depends on BT_HCIBTUSB
+ select BT_RTL
+ default y
+ help
+ The Realtek protocol support enables firmware and configuration
+ download support for Realtek Bluetooth controllers.
+
+ Say Y here to compile support for Realtek protocol.
+
+config BT_HCIBTSDIO
+ tristate "HCI SDIO driver"
+ depends on MMC
+ help
+ Bluetooth HCI SDIO driver.
+ This driver is required if you want to use Bluetooth device with
+ SDIO interface.
+
+ Say Y here to compile support for Bluetooth SDIO devices into the
+ kernel or say M to compile it as module (btsdio).
+
+config BT_HCIUART
+ tristate "HCI UART driver"
+ depends on TTY
+ help
+ Bluetooth HCI UART driver.
+ This driver is required if you want to use Bluetooth devices with
+ serial port interface. You will also need this driver if you have
+ UART based Bluetooth PCMCIA and CF devices like Xircom Credit Card
+ adapter and BrainBoxes Bluetooth PC Card.
+
+ Say Y here to compile support for Bluetooth UART devices into the
+ kernel or say M to compile it as module (hci_uart).
+
+config BT_HCIUART_H4
+ bool "UART (H4) protocol support"
+ depends on BT_HCIUART
+ help
+ UART (H4) is serial protocol for communication between Bluetooth
+ device and host. This protocol is required for most Bluetooth devices
+ with UART interface, including PCMCIA and CF cards.
+
+ Say Y here to compile support for HCI UART (H4) protocol.
+
+config BT_HCIUART_BCSP
+ bool "BCSP protocol support"
+ depends on BT_HCIUART
+ select BITREVERSE
+ help
+ BCSP (BlueCore Serial Protocol) is serial protocol for communication
+ between Bluetooth device and host. This protocol is required for non
+ USB Bluetooth devices based on CSR BlueCore chip, including PCMCIA and
+ CF cards.
+
+ Say Y here to compile support for HCI BCSP protocol.
+
+config BT_HCIUART_ATH3K
+ bool "Atheros AR300x serial support"
+ depends on BT_HCIUART
+ select BT_HCIUART_H4
+ help
+ HCIATH3K (HCI Atheros AR300x) is a serial protocol for
+ communication between host and Atheros AR300x Bluetooth devices.
+ This protocol enables AR300x chips to be enabled with
+ power management support.
+ Enable this if you have Atheros AR300x serial Bluetooth device.
+
+ Say Y here to compile support for HCI UART ATH3K protocol.
+
+config BT_HCIUART_LL
+ bool "HCILL protocol support"
+ depends on BT_HCIUART
+ help
+ HCILL (HCI Low Level) is a serial protocol for communication
+ between Bluetooth device and host. This protocol is required for
+ serial Bluetooth devices that are based on Texas Instruments'
+ BRF chips.
+
+ Say Y here to compile support for HCILL protocol.
+
+config BT_HCIUART_3WIRE
+ bool "Three-wire UART (H5) protocol support"
+ depends on BT_HCIUART
+ help
+ The HCI Three-wire UART Transport Layer makes it possible to
+ user the Bluetooth HCI over a serial port interface. The HCI
+ Three-wire UART Transport Layer assumes that the UART
+ communication may have bit errors, overrun errors or burst
+ errors and thereby making CTS/RTS lines unnecessary.
+
+ Say Y here to compile support for Three-wire UART protocol.
+
+config BT_HCIUART_INTEL
+ bool "Intel protocol support"
+ depends on BT_HCIUART
+ select BT_HCIUART_H4
+ select BT_INTEL
+ help
+ The Intel protocol support enables Bluetooth HCI over serial
+ port interface for Intel Bluetooth controllers.
+
+ Say Y here to compile support for Intel protocol.
+
+config BT_HCIUART_BCM
+ bool "Broadcom protocol support"
+ depends on BT_HCIUART
+ select BT_HCIUART_H4
+ select BT_BCM
+ help
+ The Broadcom protocol support enables Bluetooth HCI over serial
+ port interface for Broadcom Bluetooth controllers.
+
+ Say Y here to compile support for Broadcom protocol.
+
+config BT_HCIUART_QCA
+ bool "Qualcomm Atheros protocol support"
+ depends on BT_HCIUART
+ select BT_HCIUART_H4
+ select BT_QCA
+ help
+ The Qualcomm Atheros protocol supports HCI In-Band Sleep feature
+ over serial port interface(H4) between controller and host.
+ This protocol is required for UART clock control for QCA Bluetooth
+ devices.
+
+ Say Y here to compile support for QCA protocol.
+
+config BT_HCIBCM203X
+ tristate "HCI BCM203x USB driver"
+ depends on USB
+ select FW_LOADER
+ help
+ Bluetooth HCI BCM203x USB driver.
+ This driver provides the firmware loading mechanism for the Broadcom
+ Blutonium based devices.
+
+ Say Y here to compile support for HCI BCM203x devices into the
+ kernel or say M to compile it as module (bcm203x).
+
+config BT_HCIBPA10X
+ tristate "HCI BPA10x USB driver"
+ depends on USB && BT_HCIUART
+ select BT_HCIUART_H4
+ help
+ Bluetooth HCI BPA10x USB driver.
+ This driver provides support for the Digianswer BPA 100/105 Bluetooth
+ sniffer devices.
+
+ Say Y here to compile support for HCI BPA10x devices into the
+ kernel or say M to compile it as module (bpa10x).
+
+config BT_HCIBFUSB
+ tristate "HCI BlueFRITZ! USB driver"
+ depends on USB
+ select FW_LOADER
+ help
+ Bluetooth HCI BlueFRITZ! USB driver.
+ This driver provides support for Bluetooth USB devices with AVM
+ interface:
+ AVM BlueFRITZ! USB
+
+ Say Y here to compile support for HCI BFUSB devices into the
+ kernel or say M to compile it as module (bfusb).
+
+config BT_HCIDTL1
+ tristate "HCI DTL1 (PC Card) driver"
+ depends on PCMCIA
+ help
+ Bluetooth HCI DTL1 (PC Card) driver.
+ This driver provides support for Bluetooth PCMCIA devices with
+ Nokia DTL1 interface:
+ Nokia Bluetooth Card
+ Socket Bluetooth CF Card
+
+ Say Y here to compile support for HCI DTL1 devices into the
+ kernel or say M to compile it as module (dtl1_cs).
+
+config BT_HCIBT3C
+ tristate "HCI BT3C (PC Card) driver"
+ depends on PCMCIA
+ select FW_LOADER
+ help
+ Bluetooth HCI BT3C (PC Card) driver.
+ This driver provides support for Bluetooth PCMCIA devices with
+ 3Com BT3C interface:
+ 3Com Bluetooth Card (3CRWB6096)
+ HP Bluetooth Card
+
+ Say Y here to compile support for HCI BT3C devices into the
+ kernel or say M to compile it as module (bt3c_cs).
+
+config BT_HCIBLUECARD
+ tristate "HCI BlueCard (PC Card) driver"
+ depends on PCMCIA
+ help
+ Bluetooth HCI BlueCard (PC Card) driver.
+ This driver provides support for Bluetooth PCMCIA devices with
+ Anycom BlueCard interface:
+ Anycom Bluetooth PC Card
+ Anycom Bluetooth CF Card
+
+ Say Y here to compile support for HCI BlueCard devices into the
+ kernel or say M to compile it as module (bluecard_cs).
+
+config BT_HCIBTUART
+ tristate "HCI UART (PC Card) device driver"
+ depends on PCMCIA
+ help
+ Bluetooth HCI UART (PC Card) driver.
+ This driver provides support for Bluetooth PCMCIA devices with
+ an UART interface:
+ Xircom CreditCard Bluetooth Adapter
+ Xircom RealPort2 Bluetooth Adapter
+ Sphinx PICO Card
+ H-Soft blue+Card
+ Cyber-blue Compact Flash Card
+
+ Say Y here to compile support for HCI UART devices into the
+ kernel or say M to compile it as module (btuart_cs).
+
+config BT_HCIVHCI
+ tristate "HCI VHCI (Virtual HCI device) driver"
+ help
+ Bluetooth Virtual HCI device driver.
+ This driver is required if you want to use HCI Emulation software.
+
+ Say Y here to compile support for virtual HCI devices into the
+ kernel or say M to compile it as module (hci_vhci).
+
+config BT_MRVL
+ tristate "Marvell Bluetooth driver support"
+ help
+ The core driver to support Marvell Bluetooth devices.
+
+ This driver is required if you want to support
+ Marvell Bluetooth devices, such as 8688/8787/8797/8887/8897/8997.
+
+ Say Y here to compile Marvell Bluetooth driver
+ into the kernel or say M to compile it as module.
+
+config BT_MRVL_SDIO
+ tristate "Marvell BT-over-SDIO driver"
+ depends on BT_MRVL && MMC
+ select FW_LOADER
+ select WANT_DEV_COREDUMP
+ help
+ The driver for Marvell Bluetooth chipsets with SDIO interface.
+
+ This driver is required if you want to use Marvell Bluetooth
+ devices with SDIO interface. Currently SD8688/SD8787/SD8797/SD8887/SD8897/SD8997
+ chipsets are supported.
+
+ Say Y here to compile support for Marvell BT-over-SDIO driver
+ into the kernel or say M to compile it as module.
+
+config BT_ATH3K
+ tristate "Atheros firmware download driver"
+ depends on BT_HCIBTUSB
+ select FW_LOADER
+ help
+ Bluetooth firmware download driver.
+ This driver loads the firmware into the Atheros Bluetooth
+ chipset.
+
+ Say Y here to compile support for "Atheros firmware download driver"
+ into the kernel or say M to compile it as module (ath3k).
+
+config BT_WILINK
+ tristate "Texas Instruments WiLink7 driver"
+ depends on TI_ST
+ help
+ This enables the Bluetooth driver for Texas Instrument's BT/FM/GPS
+ combo devices. This makes use of shared transport line discipline
+ core driver to communicate with the BT core of the combo chip.
+
+ Say Y here to compile support for Texas Instrument's WiLink7 driver
+ into the kernel or say M to compile it as module (btwilink).
+
+endmenu
diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile
new file mode 100644
index 0000000..07c9cf3
--- /dev/null
+++ b/drivers/bluetooth/Makefile
@@ -0,0 +1,41 @@
+#
+# Makefile for the Linux Bluetooth HCI device drivers.
+#
+
+obj-$(CONFIG_BT_HCIVHCI) += hci_vhci.o
+obj-$(CONFIG_BT_HCIUART) += hci_uart.o
+obj-$(CONFIG_BT_HCIBCM203X) += bcm203x.o
+obj-$(CONFIG_BT_HCIBPA10X) += bpa10x.o
+obj-$(CONFIG_BT_HCIBFUSB) += bfusb.o
+obj-$(CONFIG_BT_HCIDTL1) += dtl1_cs.o
+obj-$(CONFIG_BT_HCIBT3C) += bt3c_cs.o
+obj-$(CONFIG_BT_HCIBLUECARD) += bluecard_cs.o
+obj-$(CONFIG_BT_HCIBTUART) += btuart_cs.o
+
+obj-$(CONFIG_BT_HCIBTUSB) += btusb.o
+obj-$(CONFIG_BT_HCIBTSDIO) += btsdio.o
+
+obj-$(CONFIG_BT_INTEL) += btintel.o
+obj-$(CONFIG_BT_ATH3K) += ath3k.o
+obj-$(CONFIG_BT_MRVL) += btmrvl.o
+obj-$(CONFIG_BT_MRVL_SDIO) += btmrvl_sdio.o
+obj-$(CONFIG_BT_WILINK) += btwilink.o
+obj-$(CONFIG_BT_BCM) += btbcm.o
+obj-$(CONFIG_BT_RTL) += btrtl.o
+obj-$(CONFIG_BT_QCA) += btqca.o
+
+btmrvl-y := btmrvl_main.o
+btmrvl-$(CONFIG_DEBUG_FS) += btmrvl_debugfs.o
+
+hci_uart-y := hci_ldisc.o
+hci_uart-$(CONFIG_BT_HCIUART_H4) += hci_h4.o
+hci_uart-$(CONFIG_BT_HCIUART_BCSP) += hci_bcsp.o
+hci_uart-$(CONFIG_BT_HCIUART_LL) += hci_ll.o
+hci_uart-$(CONFIG_BT_HCIUART_ATH3K) += hci_ath.o
+hci_uart-$(CONFIG_BT_HCIUART_3WIRE) += hci_h5.o
+hci_uart-$(CONFIG_BT_HCIUART_INTEL) += hci_intel.o
+hci_uart-$(CONFIG_BT_HCIUART_BCM) += hci_bcm.o
+hci_uart-$(CONFIG_BT_HCIUART_QCA) += hci_qca.o
+hci_uart-objs := $(hci_uart-y)
+
+ccflags-y += -D__CHECK_ENDIAN__
diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
new file mode 100644
index 0000000..5df8e12
--- /dev/null
+++ b/drivers/bluetooth/ath3k.c
@@ -0,0 +1,577 @@
+/*
+ * Copyright (c) 2008-2009 Atheros Communications Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <linux/firmware.h>
+#include <linux/usb.h>
+#include <asm/unaligned.h>
+#include <net/bluetooth/bluetooth.h>
+
+#define VERSION "1.0"
+#define ATH3K_FIRMWARE "ath3k-1.fw"
+
+#define ATH3K_DNLOAD 0x01
+#define ATH3K_GETSTATE 0x05
+#define ATH3K_SET_NORMAL_MODE 0x07
+#define ATH3K_GETVERSION 0x09
+#define USB_REG_SWITCH_VID_PID 0x0a
+
+#define ATH3K_MODE_MASK 0x3F
+#define ATH3K_NORMAL_MODE 0x0E
+
+#define ATH3K_PATCH_UPDATE 0x80
+#define ATH3K_SYSCFG_UPDATE 0x40
+
+#define ATH3K_XTAL_FREQ_26M 0x00
+#define ATH3K_XTAL_FREQ_40M 0x01
+#define ATH3K_XTAL_FREQ_19P2 0x02
+#define ATH3K_NAME_LEN 0xFF
+
+struct ath3k_version {
+ __le32 rom_version;
+ __le32 build_version;
+ __le32 ram_version;
+ __u8 ref_clock;
+ __u8 reserved[7];
+} __packed;
+
+static const struct usb_device_id ath3k_table[] = {
+ /* Atheros AR3011 */
+ { USB_DEVICE(0x0CF3, 0x3000) },
+
+ /* Atheros AR3011 with sflash firmware*/
+ { USB_DEVICE(0x0489, 0xE027) },
+ { USB_DEVICE(0x0489, 0xE03D) },
+ { USB_DEVICE(0x04F2, 0xAFF1) },
+ { USB_DEVICE(0x0930, 0x0215) },
+ { USB_DEVICE(0x0CF3, 0x3002) },
+ { USB_DEVICE(0x0CF3, 0xE019) },
+ { USB_DEVICE(0x13d3, 0x3304) },
+
+ /* Atheros AR9285 Malbec with sflash firmware */
+ { USB_DEVICE(0x03F0, 0x311D) },
+
+ /* Atheros AR3012 with sflash firmware*/
+ { USB_DEVICE(0x0489, 0xe04d) },
+ { USB_DEVICE(0x0489, 0xe04e) },
+ { USB_DEVICE(0x0489, 0xe057) },
+ { USB_DEVICE(0x0489, 0xe056) },
+ { USB_DEVICE(0x0489, 0xe05f) },
+ { USB_DEVICE(0x0489, 0xe076) },
+ { USB_DEVICE(0x0489, 0xe078) },
+ { USB_DEVICE(0x0489, 0xe095) },
+ { USB_DEVICE(0x04c5, 0x1330) },
+ { USB_DEVICE(0x04CA, 0x3004) },
+ { USB_DEVICE(0x04CA, 0x3005) },
+ { USB_DEVICE(0x04CA, 0x3006) },
+ { USB_DEVICE(0x04CA, 0x3007) },
+ { USB_DEVICE(0x04CA, 0x3008) },
+ { USB_DEVICE(0x04CA, 0x300b) },
+ { USB_DEVICE(0x04CA, 0x300d) },
+ { USB_DEVICE(0x04CA, 0x300f) },
+ { USB_DEVICE(0x04CA, 0x3010) },
+ { USB_DEVICE(0x04CA, 0x3014) },
+ { USB_DEVICE(0x04CA, 0x3018) },
+ { USB_DEVICE(0x0930, 0x0219) },
+ { USB_DEVICE(0x0930, 0x021c) },
+ { USB_DEVICE(0x0930, 0x0220) },
+ { USB_DEVICE(0x0930, 0x0227) },
+ { USB_DEVICE(0x0b05, 0x17d0) },
+ { USB_DEVICE(0x0CF3, 0x0036) },
+ { USB_DEVICE(0x0CF3, 0x3004) },
+ { USB_DEVICE(0x0CF3, 0x3008) },
+ { USB_DEVICE(0x0CF3, 0x311D) },
+ { USB_DEVICE(0x0CF3, 0x311E) },
+ { USB_DEVICE(0x0CF3, 0x311F) },
+ { USB_DEVICE(0x0cf3, 0x3121) },
+ { USB_DEVICE(0x0CF3, 0x817a) },
+ { USB_DEVICE(0x0CF3, 0x817b) },
+ { USB_DEVICE(0x0cf3, 0xe003) },
+ { USB_DEVICE(0x0CF3, 0xE004) },
+ { USB_DEVICE(0x0CF3, 0xE005) },
+ { USB_DEVICE(0x0CF3, 0xE006) },
+ { USB_DEVICE(0x13d3, 0x3362) },
+ { USB_DEVICE(0x13d3, 0x3375) },
+ { USB_DEVICE(0x13d3, 0x3393) },
+ { USB_DEVICE(0x13d3, 0x3395) },
+ { USB_DEVICE(0x13d3, 0x3402) },
+ { USB_DEVICE(0x13d3, 0x3408) },
+ { USB_DEVICE(0x13d3, 0x3423) },
+ { USB_DEVICE(0x13d3, 0x3432) },
+ { USB_DEVICE(0x13d3, 0x3472) },
+ { USB_DEVICE(0x13d3, 0x3474) },
+
+ /* Atheros AR5BBU12 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xE02C) },
+
+ /* Atheros AR5BBU22 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xE036) },
+ { USB_DEVICE(0x0489, 0xE03C) },
+
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, ath3k_table);
+
+#define BTUSB_ATH3012 0x80
+/* This table is to load patch and sysconfig files
+ * for AR3012 */
+static const struct usb_device_id ath3k_blist_tbl[] = {
+
+ /* Atheros AR3012 with sflash firmware*/
+ { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x311E), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x311F), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0CF3, 0x817b), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
+
+ /* Atheros AR5BBU22 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 },
+
+ { } /* Terminating entry */
+};
+
+#define USB_REQ_DFU_DNLOAD 1
+#define BULK_SIZE 4096
+#define FW_HDR_SIZE 20
+#define TIMEGAP_USEC_MIN 50
+#define TIMEGAP_USEC_MAX 100
+
+static int ath3k_load_firmware(struct usb_device *udev,
+ const struct firmware *firmware)
+{
+ u8 *send_buf;
+ int err, pipe, len, size, sent = 0;
+ int count = firmware->size;
+
+ BT_DBG("udev %p", udev);
+
+ pipe = usb_sndctrlpipe(udev, 0);
+
+ send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
+ if (!send_buf) {
+ BT_ERR("Can't allocate memory chunk for firmware");
+ return -ENOMEM;
+ }
+
+ memcpy(send_buf, firmware->data, 20);
+ err = usb_control_msg(udev, pipe, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR,
+ 0, 0, send_buf, 20, USB_CTRL_SET_TIMEOUT);
+ if (err < 0) {
+ BT_ERR("Can't change to loading configuration err");
+ goto error;
+ }
+ sent += 20;
+ count -= 20;
+
+ pipe = usb_sndbulkpipe(udev, 0x02);
+
+ while (count) {
+ /* workaround the compatibility issue with xHCI controller*/
+ usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
+
+ size = min_t(uint, count, BULK_SIZE);
+ memcpy(send_buf, firmware->data + sent, size);
+
+ err = usb_bulk_msg(udev, pipe, send_buf, size,
+ &len, 3000);
+
+ if (err || (len != size)) {
+ BT_ERR("Error in firmware loading err = %d,"
+ "len = %d, size = %d", err, len, size);
+ goto error;
+ }
+
+ sent += size;
+ count -= size;
+ }
+
+error:
+ kfree(send_buf);
+ return err;
+}
+
+static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
+{
+ int ret, pipe = 0;
+ char *buf;
+
+ buf = kmalloc(sizeof(*buf), GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ pipe = usb_rcvctrlpipe(udev, 0);
+ ret = usb_control_msg(udev, pipe, ATH3K_GETSTATE,
+ USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
+ buf, sizeof(*buf), USB_CTRL_SET_TIMEOUT);
+
+ *state = *buf;
+ kfree(buf);
+
+ return ret;
+}
+
+static int ath3k_get_version(struct usb_device *udev,
+ struct ath3k_version *version)
+{
+ int ret, pipe = 0;
+ struct ath3k_version *buf;
+ const int size = sizeof(*buf);
+
+ buf = kmalloc(size, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ pipe = usb_rcvctrlpipe(udev, 0);
+ ret = usb_control_msg(udev, pipe, ATH3K_GETVERSION,
+ USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
+ buf, size, USB_CTRL_SET_TIMEOUT);
+
+ memcpy(version, buf, size);
+ kfree(buf);
+
+ return ret;
+}
+
+static int ath3k_load_fwfile(struct usb_device *udev,
+ const struct firmware *firmware)
+{
+ u8 *send_buf;
+ int err, pipe, len, size, count, sent = 0;
+ int ret;
+
+ count = firmware->size;
+
+ send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
+ if (!send_buf) {
+ BT_ERR("Can't allocate memory chunk for firmware");
+ return -ENOMEM;
+ }
+
+ size = min_t(uint, count, FW_HDR_SIZE);
+ memcpy(send_buf, firmware->data, size);
+
+ pipe = usb_sndctrlpipe(udev, 0);
+ ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD,
+ USB_TYPE_VENDOR, 0, 0, send_buf,
+ size, USB_CTRL_SET_TIMEOUT);
+ if (ret < 0) {
+ BT_ERR("Can't change to loading configuration err");
+ kfree(send_buf);
+ return ret;
+ }
+
+ sent += size;
+ count -= size;
+
+ pipe = usb_sndbulkpipe(udev, 0x02);
+
+ while (count) {
+ /* workaround the compatibility issue with xHCI controller*/
+ usleep_range(TIMEGAP_USEC_MIN, TIMEGAP_USEC_MAX);
+
+ size = min_t(uint, count, BULK_SIZE);
+ memcpy(send_buf, firmware->data + sent, size);
+
+ err = usb_bulk_msg(udev, pipe, send_buf, size,
+ &len, 3000);
+ if (err || (len != size)) {
+ BT_ERR("Error in firmware loading err = %d,"
+ "len = %d, size = %d", err, len, size);
+ kfree(send_buf);
+ return err;
+ }
+ sent += size;
+ count -= size;
+ }
+
+ kfree(send_buf);
+ return 0;
+}
+
+static int ath3k_switch_pid(struct usb_device *udev)
+{
+ int pipe = 0;
+
+ pipe = usb_sndctrlpipe(udev, 0);
+ return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID,
+ USB_TYPE_VENDOR, 0, 0,
+ NULL, 0, USB_CTRL_SET_TIMEOUT);
+}
+
+static int ath3k_set_normal_mode(struct usb_device *udev)
+{
+ unsigned char fw_state;
+ int pipe = 0, ret;
+
+ ret = ath3k_get_state(udev, &fw_state);
+ if (ret < 0) {
+ BT_ERR("Can't get state to change to normal mode err");
+ return ret;
+ }
+
+ if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
+ BT_DBG("firmware was already in normal mode");
+ return 0;
+ }
+
+ pipe = usb_sndctrlpipe(udev, 0);
+ return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE,
+ USB_TYPE_VENDOR, 0, 0,
+ NULL, 0, USB_CTRL_SET_TIMEOUT);
+}
+
+static int ath3k_load_patch(struct usb_device *udev)
+{
+ unsigned char fw_state;
+ char filename[ATH3K_NAME_LEN] = {0};
+ const struct firmware *firmware;
+ struct ath3k_version fw_version;
+ __u32 pt_rom_version, pt_build_version;
+ int ret;
+
+ ret = ath3k_get_state(udev, &fw_state);
+ if (ret < 0) {
+ BT_ERR("Can't get state to change to load ram patch err");
+ return ret;
+ }
+
+ if (fw_state & ATH3K_PATCH_UPDATE) {
+ BT_DBG("Patch was already downloaded");
+ return 0;
+ }
+
+ ret = ath3k_get_version(udev, &fw_version);
+ if (ret < 0) {
+ BT_ERR("Can't get version to change to load ram patch err");
+ return ret;
+ }
+
+ snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
+ le32_to_cpu(fw_version.rom_version));
+
+ ret = request_firmware(&firmware, filename, &udev->dev);
+ if (ret < 0) {
+ BT_ERR("Patch file not found %s", filename);
+ return ret;
+ }
+
+ pt_rom_version = get_unaligned_le32(firmware->data +
+ firmware->size - 8);
+ pt_build_version = get_unaligned_le32(firmware->data +
+ firmware->size - 4);
+
+ if (pt_rom_version != le32_to_cpu(fw_version.rom_version) ||
+ pt_build_version <= le32_to_cpu(fw_version.build_version)) {
+ BT_ERR("Patch file version did not match with firmware");
+ release_firmware(firmware);
+ return -EINVAL;
+ }
+
+ ret = ath3k_load_fwfile(udev, firmware);
+ release_firmware(firmware);
+
+ return ret;
+}
+
+static int ath3k_load_syscfg(struct usb_device *udev)
+{
+ unsigned char fw_state;
+ char filename[ATH3K_NAME_LEN] = {0};
+ const struct firmware *firmware;
+ struct ath3k_version fw_version;
+ int clk_value, ret;
+
+ ret = ath3k_get_state(udev, &fw_state);
+ if (ret < 0) {
+ BT_ERR("Can't get state to change to load configuration err");
+ return -EBUSY;
+ }
+
+ ret = ath3k_get_version(udev, &fw_version);
+ if (ret < 0) {
+ BT_ERR("Can't get version to change to load ram patch err");
+ return ret;
+ }
+
+ switch (fw_version.ref_clock) {
+
+ case ATH3K_XTAL_FREQ_26M:
+ clk_value = 26;
+ break;
+ case ATH3K_XTAL_FREQ_40M:
+ clk_value = 40;
+ break;
+ case ATH3K_XTAL_FREQ_19P2:
+ clk_value = 19;
+ break;
+ default:
+ clk_value = 0;
+ break;
+ }
+
+ snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
+ le32_to_cpu(fw_version.rom_version), clk_value, ".dfu");
+
+ ret = request_firmware(&firmware, filename, &udev->dev);
+ if (ret < 0) {
+ BT_ERR("Configuration file not found %s", filename);
+ return ret;
+ }
+
+ ret = ath3k_load_fwfile(udev, firmware);
+ release_firmware(firmware);
+
+ return ret;
+}
+
+static int ath3k_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ const struct firmware *firmware;
+ struct usb_device *udev = interface_to_usbdev(intf);
+ int ret;
+
+ BT_DBG("intf %p id %p", intf, id);
+
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
+ return -ENODEV;
+
+ /* match device ID in ath3k blacklist table */
+ if (!id->driver_info) {
+ const struct usb_device_id *match;
+ match = usb_match_id(intf, ath3k_blist_tbl);
+ if (match)
+ id = match;
+ }
+
+ /* load patch and sysconfig files for AR3012 */
+ if (id->driver_info & BTUSB_ATH3012) {
+
+ /* New firmware with patch and sysconfig files already loaded */
+ if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
+ return -ENODEV;
+
+ ret = ath3k_load_patch(udev);
+ if (ret < 0) {
+ BT_ERR("Loading patch file failed");
+ return ret;
+ }
+ ret = ath3k_load_syscfg(udev);
+ if (ret < 0) {
+ BT_ERR("Loading sysconfig file failed");
+ return ret;
+ }
+ ret = ath3k_set_normal_mode(udev);
+ if (ret < 0) {
+ BT_ERR("Set normal mode failed");
+ return ret;
+ }
+ ath3k_switch_pid(udev);
+ return 0;
+ }
+
+ ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev);
+ if (ret < 0) {
+ if (ret == -ENOENT)
+ BT_ERR("Firmware file \"%s\" not found",
+ ATH3K_FIRMWARE);
+ else
+ BT_ERR("Firmware file \"%s\" request failed (err=%d)",
+ ATH3K_FIRMWARE, ret);
+ return ret;
+ }
+
+ ret = ath3k_load_firmware(udev, firmware);
+ release_firmware(firmware);
+
+ return ret;
+}
+
+static void ath3k_disconnect(struct usb_interface *intf)
+{
+ BT_DBG("ath3k_disconnect intf %p", intf);
+}
+
+static struct usb_driver ath3k_driver = {
+ .name = "ath3k",
+ .probe = ath3k_probe,
+ .disconnect = ath3k_disconnect,
+ .id_table = ath3k_table,
+ .disable_hub_initiated_lpm = 1,
+};
+
+module_usb_driver(ath3k_driver);
+
+MODULE_AUTHOR("Atheros Communications");
+MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE(ATH3K_FIRMWARE);
diff --git a/drivers/bluetooth/bcm203x.c b/drivers/bluetooth/bcm203x.c
new file mode 100644
index 0000000..364f82b
--- /dev/null
+++ b/drivers/bluetooth/bcm203x.c
@@ -0,0 +1,286 @@
+/*
+ *
+ * Broadcom Blutonium firmware driver
+ *
+ * Copyright (C) 2003 Maxim Krasnyansky <maxk@qualcomm.com>
+ * Copyright (C) 2003 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/atomic.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+
+#include <linux/device.h>
+#include <linux/firmware.h>
+
+#include <linux/usb.h>
+
+#include <net/bluetooth/bluetooth.h>
+
+#define VERSION "1.2"
+
+static const struct usb_device_id bcm203x_table[] = {
+ /* Broadcom Blutonium (BCM2033) */
+ { USB_DEVICE(0x0a5c, 0x2033) },
+
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, bcm203x_table);
+
+#define BCM203X_ERROR 0
+#define BCM203X_RESET 1
+#define BCM203X_LOAD_MINIDRV 2
+#define BCM203X_SELECT_MEMORY 3
+#define BCM203X_CHECK_MEMORY 4
+#define BCM203X_LOAD_FIRMWARE 5
+#define BCM203X_CHECK_FIRMWARE 6
+
+#define BCM203X_IN_EP 0x81
+#define BCM203X_OUT_EP 0x02
+
+struct bcm203x_data {
+ struct usb_device *udev;
+
+ unsigned long state;
+
+ struct work_struct work;
+ atomic_t shutdown;
+
+ struct urb *urb;
+ unsigned char *buffer;
+
+ unsigned char *fw_data;
+ unsigned int fw_size;
+ unsigned int fw_sent;
+};
+
+static void bcm203x_complete(struct urb *urb)
+{
+ struct bcm203x_data *data = urb->context;
+ struct usb_device *udev = urb->dev;
+ int len;
+
+ BT_DBG("udev %p urb %p", udev, urb);
+
+ if (urb->status) {
+ BT_ERR("URB failed with status %d", urb->status);
+ data->state = BCM203X_ERROR;
+ return;
+ }
+
+ switch (data->state) {
+ case BCM203X_LOAD_MINIDRV:
+ memcpy(data->buffer, "#", 1);
+
+ usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
+ data->buffer, 1, bcm203x_complete, data);
+
+ data->state = BCM203X_SELECT_MEMORY;
+
+ /* use workqueue to have a small delay */
+ schedule_work(&data->work);
+ break;
+
+ case BCM203X_SELECT_MEMORY:
+ usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
+ data->buffer, 32, bcm203x_complete, data, 1);
+
+ data->state = BCM203X_CHECK_MEMORY;
+
+ if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
+ BT_ERR("Can't submit URB");
+ break;
+
+ case BCM203X_CHECK_MEMORY:
+ if (data->buffer[0] != '#') {
+ BT_ERR("Memory select failed");
+ data->state = BCM203X_ERROR;
+ break;
+ }
+
+ data->state = BCM203X_LOAD_FIRMWARE;
+
+ case BCM203X_LOAD_FIRMWARE:
+ if (data->fw_sent == data->fw_size) {
+ usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
+ data->buffer, 32, bcm203x_complete, data, 1);
+
+ data->state = BCM203X_CHECK_FIRMWARE;
+ } else {
+ len = min_t(uint, data->fw_size - data->fw_sent, 4096);
+
+ usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
+ data->fw_data + data->fw_sent, len, bcm203x_complete, data);
+
+ data->fw_sent += len;
+ }
+
+ if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
+ BT_ERR("Can't submit URB");
+ break;
+
+ case BCM203X_CHECK_FIRMWARE:
+ if (data->buffer[0] != '.') {
+ BT_ERR("Firmware loading failed");
+ data->state = BCM203X_ERROR;
+ break;
+ }
+
+ data->state = BCM203X_RESET;
+ break;
+ }
+}
+
+static void bcm203x_work(struct work_struct *work)
+{
+ struct bcm203x_data *data =
+ container_of(work, struct bcm203x_data, work);
+
+ if (atomic_read(&data->shutdown))
+ return;
+
+ if (usb_submit_urb(data->urb, GFP_KERNEL) < 0)
+ BT_ERR("Can't submit URB");
+}
+
+static int bcm203x_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+ const struct firmware *firmware;
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct bcm203x_data *data;
+ int size;
+
+ BT_DBG("intf %p id %p", intf, id);
+
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
+ return -ENODEV;
+
+ data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
+ if (!data) {
+ BT_ERR("Can't allocate memory for data structure");
+ return -ENOMEM;
+ }
+
+ data->udev = udev;
+ data->state = BCM203X_LOAD_MINIDRV;
+
+ data->urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!data->urb) {
+ BT_ERR("Can't allocate URB");
+ return -ENOMEM;
+ }
+
+ if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) {
+ BT_ERR("Mini driver request failed");
+ usb_free_urb(data->urb);
+ return -EIO;
+ }
+
+ BT_DBG("minidrv data %p size %zu", firmware->data, firmware->size);
+
+ size = max_t(uint, firmware->size, 4096);
+
+ data->buffer = kmalloc(size, GFP_KERNEL);
+ if (!data->buffer) {
+ BT_ERR("Can't allocate memory for mini driver");
+ release_firmware(firmware);
+ usb_free_urb(data->urb);
+ return -ENOMEM;
+ }
+
+ memcpy(data->buffer, firmware->data, firmware->size);
+
+ usb_fill_bulk_urb(data->urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
+ data->buffer, firmware->size, bcm203x_complete, data);
+
+ release_firmware(firmware);
+
+ if (request_firmware(&firmware, "BCM2033-FW.bin", &udev->dev) < 0) {
+ BT_ERR("Firmware request failed");
+ usb_free_urb(data->urb);
+ kfree(data->buffer);
+ return -EIO;
+ }
+
+ BT_DBG("firmware data %p size %zu", firmware->data, firmware->size);
+
+ data->fw_data = kmemdup(firmware->data, firmware->size, GFP_KERNEL);
+ if (!data->fw_data) {
+ BT_ERR("Can't allocate memory for firmware image");
+ release_firmware(firmware);
+ usb_free_urb(data->urb);
+ kfree(data->buffer);
+ return -ENOMEM;
+ }
+
+ data->fw_size = firmware->size;
+ data->fw_sent = 0;
+
+ release_firmware(firmware);
+
+ INIT_WORK(&data->work, bcm203x_work);
+
+ usb_set_intfdata(intf, data);
+
+ /* use workqueue to have a small delay */
+ schedule_work(&data->work);
+
+ return 0;
+}
+
+static void bcm203x_disconnect(struct usb_interface *intf)
+{
+ struct bcm203x_data *data = usb_get_intfdata(intf);
+
+ BT_DBG("intf %p", intf);
+
+ atomic_inc(&data->shutdown);
+ cancel_work_sync(&data->work);
+
+ usb_kill_urb(data->urb);
+
+ usb_set_intfdata(intf, NULL);
+
+ usb_free_urb(data->urb);
+ kfree(data->fw_data);
+ kfree(data->buffer);
+}
+
+static struct usb_driver bcm203x_driver = {
+ .name = "bcm203x",
+ .probe = bcm203x_probe,
+ .disconnect = bcm203x_disconnect,
+ .id_table = bcm203x_table,
+ .disable_hub_initiated_lpm = 1,
+};
+
+module_usb_driver(bcm203x_driver);
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("BCM2033-MD.hex");
+MODULE_FIRMWARE("BCM2033-FW.bin");
diff --git a/drivers/bluetooth/bfusb.c b/drivers/bluetooth/bfusb.c
new file mode 100644
index 0000000..616ec2a
--- /dev/null
+++ b/drivers/bluetooth/bfusb.c
@@ -0,0 +1,739 @@
+/*
+ *
+ * AVM BlueFRITZ! USB driver
+ *
+ * Copyright (C) 2003-2006 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/skbuff.h>
+
+#include <linux/device.h>
+#include <linux/firmware.h>
+
+#include <linux/usb.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#define VERSION "1.2"
+
+static struct usb_driver bfusb_driver;
+
+static const struct usb_device_id bfusb_table[] = {
+ /* AVM BlueFRITZ! USB */
+ { USB_DEVICE(0x057c, 0x2200) },
+
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, bfusb_table);
+
+#define BFUSB_MAX_BLOCK_SIZE 256
+
+#define BFUSB_BLOCK_TIMEOUT 3000
+
+#define BFUSB_TX_PROCESS 1
+#define BFUSB_TX_WAKEUP 2
+
+#define BFUSB_MAX_BULK_TX 2
+#define BFUSB_MAX_BULK_RX 2
+
+struct bfusb_data {
+ struct hci_dev *hdev;
+
+ unsigned long state;
+
+ struct usb_device *udev;
+
+ unsigned int bulk_in_ep;
+ unsigned int bulk_out_ep;
+ unsigned int bulk_pkt_size;
+
+ rwlock_t lock;
+
+ struct sk_buff_head transmit_q;
+
+ struct sk_buff *reassembly;
+
+ atomic_t pending_tx;
+ struct sk_buff_head pending_q;
+ struct sk_buff_head completed_q;
+};
+
+struct bfusb_data_scb {
+ struct urb *urb;
+};
+
+static void bfusb_tx_complete(struct urb *urb);
+static void bfusb_rx_complete(struct urb *urb);
+
+static struct urb *bfusb_get_completed(struct bfusb_data *data)
+{
+ struct sk_buff *skb;
+ struct urb *urb = NULL;
+
+ BT_DBG("bfusb %p", data);
+
+ skb = skb_dequeue(&data->completed_q);
+ if (skb) {
+ urb = ((struct bfusb_data_scb *) skb->cb)->urb;
+ kfree_skb(skb);
+ }
+
+ return urb;
+}
+
+static void bfusb_unlink_urbs(struct bfusb_data *data)
+{
+ struct sk_buff *skb;
+ struct urb *urb;
+
+ BT_DBG("bfusb %p", data);
+
+ while ((skb = skb_dequeue(&data->pending_q))) {
+ urb = ((struct bfusb_data_scb *) skb->cb)->urb;
+ usb_kill_urb(urb);
+ skb_queue_tail(&data->completed_q, skb);
+ }
+
+ while ((urb = bfusb_get_completed(data)))
+ usb_free_urb(urb);
+}
+
+static int bfusb_send_bulk(struct bfusb_data *data, struct sk_buff *skb)
+{
+ struct bfusb_data_scb *scb = (void *) skb->cb;
+ struct urb *urb = bfusb_get_completed(data);
+ int err, pipe;
+
+ BT_DBG("bfusb %p skb %p len %d", data, skb, skb->len);
+
+ if (!urb) {
+ urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!urb)
+ return -ENOMEM;
+ }
+
+ pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
+
+ usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, skb->len,
+ bfusb_tx_complete, skb);
+
+ scb->urb = urb;
+
+ skb_queue_tail(&data->pending_q, skb);
+
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err) {
+ BT_ERR("%s bulk tx submit failed urb %p err %d",
+ data->hdev->name, urb, err);
+ skb_unlink(skb, &data->pending_q);
+ usb_free_urb(urb);
+ } else
+ atomic_inc(&data->pending_tx);
+
+ return err;
+}
+
+static void bfusb_tx_wakeup(struct bfusb_data *data)
+{
+ struct sk_buff *skb;
+
+ BT_DBG("bfusb %p", data);
+
+ if (test_and_set_bit(BFUSB_TX_PROCESS, &data->state)) {
+ set_bit(BFUSB_TX_WAKEUP, &data->state);
+ return;
+ }
+
+ do {
+ clear_bit(BFUSB_TX_WAKEUP, &data->state);
+
+ while ((atomic_read(&data->pending_tx) < BFUSB_MAX_BULK_TX) &&
+ (skb = skb_dequeue(&data->transmit_q))) {
+ if (bfusb_send_bulk(data, skb) < 0) {
+ skb_queue_head(&data->transmit_q, skb);
+ break;
+ }
+ }
+
+ } while (test_bit(BFUSB_TX_WAKEUP, &data->state));
+
+ clear_bit(BFUSB_TX_PROCESS, &data->state);
+}
+
+static void bfusb_tx_complete(struct urb *urb)
+{
+ struct sk_buff *skb = (struct sk_buff *) urb->context;
+ struct bfusb_data *data = (struct bfusb_data *) skb->dev;
+
+ BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
+
+ atomic_dec(&data->pending_tx);
+
+ if (!test_bit(HCI_RUNNING, &data->hdev->flags))
+ return;
+
+ if (!urb->status)
+ data->hdev->stat.byte_tx += skb->len;
+ else
+ data->hdev->stat.err_tx++;
+
+ read_lock(&data->lock);
+
+ skb_unlink(skb, &data->pending_q);
+ skb_queue_tail(&data->completed_q, skb);
+
+ bfusb_tx_wakeup(data);
+
+ read_unlock(&data->lock);
+}
+
+
+static int bfusb_rx_submit(struct bfusb_data *data, struct urb *urb)
+{
+ struct bfusb_data_scb *scb;
+ struct sk_buff *skb;
+ int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;
+
+ BT_DBG("bfusb %p urb %p", data, urb);
+
+ if (!urb) {
+ urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!urb)
+ return -ENOMEM;
+ }
+
+ skb = bt_skb_alloc(size, GFP_ATOMIC);
+ if (!skb) {
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ skb->dev = (void *) data;
+
+ scb = (struct bfusb_data_scb *) skb->cb;
+ scb->urb = urb;
+
+ pipe = usb_rcvbulkpipe(data->udev, data->bulk_in_ep);
+
+ usb_fill_bulk_urb(urb, data->udev, pipe, skb->data, size,
+ bfusb_rx_complete, skb);
+
+ skb_queue_tail(&data->pending_q, skb);
+
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err) {
+ BT_ERR("%s bulk rx submit failed urb %p err %d",
+ data->hdev->name, urb, err);
+ skb_unlink(skb, &data->pending_q);
+ kfree_skb(skb);
+ usb_free_urb(urb);
+ }
+
+ return err;
+}
+
+static inline int bfusb_recv_block(struct bfusb_data *data, int hdr, unsigned char *buf, int len)
+{
+ BT_DBG("bfusb %p hdr 0x%02x data %p len %d", data, hdr, buf, len);
+
+ if (hdr & 0x10) {
+ BT_ERR("%s error in block", data->hdev->name);
+ kfree_skb(data->reassembly);
+ data->reassembly = NULL;
+ return -EIO;
+ }
+
+ if (hdr & 0x04) {
+ struct sk_buff *skb;
+ unsigned char pkt_type;
+ int pkt_len = 0;
+
+ if (data->reassembly) {
+ BT_ERR("%s unexpected start block", data->hdev->name);
+ kfree_skb(data->reassembly);
+ data->reassembly = NULL;
+ }
+
+ if (len < 1) {
+ BT_ERR("%s no packet type found", data->hdev->name);
+ return -EPROTO;
+ }
+
+ pkt_type = *buf++; len--;
+
+ switch (pkt_type) {
+ case HCI_EVENT_PKT:
+ if (len >= HCI_EVENT_HDR_SIZE) {
+ struct hci_event_hdr *hdr = (struct hci_event_hdr *) buf;
+ pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
+ } else {
+ BT_ERR("%s event block is too short", data->hdev->name);
+ return -EILSEQ;
+ }
+ break;
+
+ case HCI_ACLDATA_PKT:
+ if (len >= HCI_ACL_HDR_SIZE) {
+ struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) buf;
+ pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
+ } else {
+ BT_ERR("%s data block is too short", data->hdev->name);
+ return -EILSEQ;
+ }
+ break;
+
+ case HCI_SCODATA_PKT:
+ if (len >= HCI_SCO_HDR_SIZE) {
+ struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) buf;
+ pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
+ } else {
+ BT_ERR("%s audio block is too short", data->hdev->name);
+ return -EILSEQ;
+ }
+ break;
+ }
+
+ skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
+ if (!skb) {
+ BT_ERR("%s no memory for the packet", data->hdev->name);
+ return -ENOMEM;
+ }
+
+ bt_cb(skb)->pkt_type = pkt_type;
+
+ data->reassembly = skb;
+ } else {
+ if (!data->reassembly) {
+ BT_ERR("%s unexpected continuation block", data->hdev->name);
+ return -EIO;
+ }
+ }
+
+ if (len > 0)
+ memcpy(skb_put(data->reassembly, len), buf, len);
+
+ if (hdr & 0x08) {
+ hci_recv_frame(data->hdev, data->reassembly);
+ data->reassembly = NULL;
+ }
+
+ return 0;
+}
+
+static void bfusb_rx_complete(struct urb *urb)
+{
+ struct sk_buff *skb = (struct sk_buff *) urb->context;
+ struct bfusb_data *data = (struct bfusb_data *) skb->dev;
+ unsigned char *buf = urb->transfer_buffer;
+ int count = urb->actual_length;
+ int err, hdr, len;
+
+ BT_DBG("bfusb %p urb %p skb %p len %d", data, urb, skb, skb->len);
+
+ read_lock(&data->lock);
+
+ if (!test_bit(HCI_RUNNING, &data->hdev->flags))
+ goto unlock;
+
+ if (urb->status || !count)
+ goto resubmit;
+
+ data->hdev->stat.byte_rx += count;
+
+ skb_put(skb, count);
+
+ while (count) {
+ hdr = buf[0] | (buf[1] << 8);
+
+ if (hdr & 0x4000) {
+ len = 0;
+ count -= 2;
+ buf += 2;
+ } else {
+ len = (buf[2] == 0) ? 256 : buf[2];
+ count -= 3;
+ buf += 3;
+ }
+
+ if (count < len) {
+ BT_ERR("%s block extends over URB buffer ranges",
+ data->hdev->name);
+ }
+
+ if ((hdr & 0xe1) == 0xc1)
+ bfusb_recv_block(data, hdr, buf, len);
+
+ count -= len;
+ buf += len;
+ }
+
+ skb_unlink(skb, &data->pending_q);
+ kfree_skb(skb);
+
+ bfusb_rx_submit(data, urb);
+
+ read_unlock(&data->lock);
+
+ return;
+
+resubmit:
+ urb->dev = data->udev;
+
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err) {
+ BT_ERR("%s bulk resubmit failed urb %p err %d",
+ data->hdev->name, urb, err);
+ }
+
+unlock:
+ read_unlock(&data->lock);
+}
+
+static int bfusb_open(struct hci_dev *hdev)
+{
+ struct bfusb_data *data = hci_get_drvdata(hdev);
+ unsigned long flags;
+ int i, err;
+
+ BT_DBG("hdev %p bfusb %p", hdev, data);
+
+ write_lock_irqsave(&data->lock, flags);
+
+ err = bfusb_rx_submit(data, NULL);
+ if (!err) {
+ for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
+ bfusb_rx_submit(data, NULL);
+ }
+
+ write_unlock_irqrestore(&data->lock, flags);
+
+ return err;
+}
+
+static int bfusb_flush(struct hci_dev *hdev)
+{
+ struct bfusb_data *data = hci_get_drvdata(hdev);
+
+ BT_DBG("hdev %p bfusb %p", hdev, data);
+
+ skb_queue_purge(&data->transmit_q);
+
+ return 0;
+}
+
+static int bfusb_close(struct hci_dev *hdev)
+{
+ struct bfusb_data *data = hci_get_drvdata(hdev);
+ unsigned long flags;
+
+ BT_DBG("hdev %p bfusb %p", hdev, data);
+
+ write_lock_irqsave(&data->lock, flags);
+ write_unlock_irqrestore(&data->lock, flags);
+
+ bfusb_unlink_urbs(data);
+ bfusb_flush(hdev);
+
+ return 0;
+}
+
+static int bfusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct bfusb_data *data = hci_get_drvdata(hdev);
+ struct sk_buff *nskb;
+ unsigned char buf[3];
+ int sent = 0, size, count;
+
+ BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len);
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_COMMAND_PKT:
+ hdev->stat.cmd_tx++;
+ break;
+ case HCI_ACLDATA_PKT:
+ hdev->stat.acl_tx++;
+ break;
+ case HCI_SCODATA_PKT:
+ hdev->stat.sco_tx++;
+ break;
+ }
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+
+ count = skb->len;
+
+ /* Max HCI frame size seems to be 1511 + 1 */
+ nskb = bt_skb_alloc(count + 32, GFP_ATOMIC);
+ if (!nskb) {
+ BT_ERR("Can't allocate memory for new packet");
+ return -ENOMEM;
+ }
+
+ nskb->dev = (void *) data;
+
+ while (count) {
+ size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);
+
+ buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0);
+ buf[1] = 0x00;
+ buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;
+
+ memcpy(skb_put(nskb, 3), buf, 3);
+ skb_copy_from_linear_data_offset(skb, sent, skb_put(nskb, size), size);
+
+ sent += size;
+ count -= size;
+ }
+
+ /* Don't send frame with multiple size of bulk max packet */
+ if ((nskb->len % data->bulk_pkt_size) == 0) {
+ buf[0] = 0xdd;
+ buf[1] = 0x00;
+ memcpy(skb_put(nskb, 2), buf, 2);
+ }
+
+ read_lock(&data->lock);
+
+ skb_queue_tail(&data->transmit_q, nskb);
+ bfusb_tx_wakeup(data);
+
+ read_unlock(&data->lock);
+
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static int bfusb_load_firmware(struct bfusb_data *data,
+ const unsigned char *firmware, int count)
+{
+ unsigned char *buf;
+ int err, pipe, len, size, sent = 0;
+
+ BT_DBG("bfusb %p udev %p", data, data->udev);
+
+ BT_INFO("BlueFRITZ! USB loading firmware");
+
+ buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_KERNEL);
+ if (!buf) {
+ BT_ERR("Can't allocate memory chunk for firmware");
+ return -ENOMEM;
+ }
+
+ pipe = usb_sndctrlpipe(data->udev, 0);
+
+ if (usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
+ 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) {
+ BT_ERR("Can't change to loading configuration");
+ kfree(buf);
+ return -EBUSY;
+ }
+
+ data->udev->toggle[0] = data->udev->toggle[1] = 0;
+
+ pipe = usb_sndbulkpipe(data->udev, data->bulk_out_ep);
+
+ while (count) {
+ size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);
+
+ memcpy(buf, firmware + sent, size);
+
+ err = usb_bulk_msg(data->udev, pipe, buf, size,
+ &len, BFUSB_BLOCK_TIMEOUT);
+
+ if (err || (len != size)) {
+ BT_ERR("Error in firmware loading");
+ goto error;
+ }
+
+ sent += size;
+ count -= size;
+ }
+
+ err = usb_bulk_msg(data->udev, pipe, NULL, 0,
+ &len, BFUSB_BLOCK_TIMEOUT);
+ if (err < 0) {
+ BT_ERR("Error in null packet request");
+ goto error;
+ }
+
+ pipe = usb_sndctrlpipe(data->udev, 0);
+
+ err = usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
+ 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
+ if (err < 0) {
+ BT_ERR("Can't change to running configuration");
+ goto error;
+ }
+
+ data->udev->toggle[0] = data->udev->toggle[1] = 0;
+
+ BT_INFO("BlueFRITZ! USB device ready");
+
+ kfree(buf);
+ return 0;
+
+error:
+ kfree(buf);
+
+ pipe = usb_sndctrlpipe(data->udev, 0);
+
+ usb_control_msg(data->udev, pipe, USB_REQ_SET_CONFIGURATION,
+ 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
+
+ return err;
+}
+
+static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+ const struct firmware *firmware;
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct usb_host_endpoint *bulk_out_ep;
+ struct usb_host_endpoint *bulk_in_ep;
+ struct hci_dev *hdev;
+ struct bfusb_data *data;
+
+ BT_DBG("intf %p id %p", intf, id);
+
+ /* Check number of endpoints */
+ if (intf->cur_altsetting->desc.bNumEndpoints < 2)
+ return -EIO;
+
+ bulk_out_ep = &intf->cur_altsetting->endpoint[0];
+ bulk_in_ep = &intf->cur_altsetting->endpoint[1];
+
+ if (!bulk_out_ep || !bulk_in_ep) {
+ BT_ERR("Bulk endpoints not found");
+ goto done;
+ }
+
+ /* Initialize control structure and load firmware */
+ data = devm_kzalloc(&intf->dev, sizeof(struct bfusb_data), GFP_KERNEL);
+ if (!data) {
+ BT_ERR("Can't allocate memory for control structure");
+ goto done;
+ }
+
+ data->udev = udev;
+ data->bulk_in_ep = bulk_in_ep->desc.bEndpointAddress;
+ data->bulk_out_ep = bulk_out_ep->desc.bEndpointAddress;
+ data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
+
+ rwlock_init(&data->lock);
+
+ data->reassembly = NULL;
+
+ skb_queue_head_init(&data->transmit_q);
+ skb_queue_head_init(&data->pending_q);
+ skb_queue_head_init(&data->completed_q);
+
+ if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
+ BT_ERR("Firmware request failed");
+ goto done;
+ }
+
+ BT_DBG("firmware data %p size %zu", firmware->data, firmware->size);
+
+ if (bfusb_load_firmware(data, firmware->data, firmware->size) < 0) {
+ BT_ERR("Firmware loading failed");
+ goto release;
+ }
+
+ release_firmware(firmware);
+
+ /* Initialize and register HCI device */
+ hdev = hci_alloc_dev();
+ if (!hdev) {
+ BT_ERR("Can't allocate HCI device");
+ goto done;
+ }
+
+ data->hdev = hdev;
+
+ hdev->bus = HCI_USB;
+ hci_set_drvdata(hdev, data);
+ SET_HCIDEV_DEV(hdev, &intf->dev);
+
+ hdev->open = bfusb_open;
+ hdev->close = bfusb_close;
+ hdev->flush = bfusb_flush;
+ hdev->send = bfusb_send_frame;
+
+ set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
+
+ if (hci_register_dev(hdev) < 0) {
+ BT_ERR("Can't register HCI device");
+ hci_free_dev(hdev);
+ goto done;
+ }
+
+ usb_set_intfdata(intf, data);
+
+ return 0;
+
+release:
+ release_firmware(firmware);
+
+done:
+ return -EIO;
+}
+
+static void bfusb_disconnect(struct usb_interface *intf)
+{
+ struct bfusb_data *data = usb_get_intfdata(intf);
+ struct hci_dev *hdev = data->hdev;
+
+ BT_DBG("intf %p", intf);
+
+ if (!hdev)
+ return;
+
+ usb_set_intfdata(intf, NULL);
+
+ bfusb_close(hdev);
+
+ hci_unregister_dev(hdev);
+ hci_free_dev(hdev);
+}
+
+static struct usb_driver bfusb_driver = {
+ .name = "bfusb",
+ .probe = bfusb_probe,
+ .disconnect = bfusb_disconnect,
+ .id_table = bfusb_table,
+ .disable_hub_initiated_lpm = 1,
+};
+
+module_usb_driver(bfusb_driver);
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("bfubase.frm");
diff --git a/drivers/bluetooth/bluecard_cs.c b/drivers/bluetooth/bluecard_cs.c
new file mode 100644
index 0000000..36fa1c9
--- /dev/null
+++ b/drivers/bluetooth/bluecard_cs.c
@@ -0,0 +1,919 @@
+/*
+ *
+ * Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)
+ *
+ * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/spinlock.h>
+#include <linux/moduleparam.h>
+#include <linux/wait.h>
+
+#include <linux/skbuff.h>
+#include <linux/io.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+
+
+/* ======================== Module parameters ======================== */
+
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
+MODULE_LICENSE("GPL");
+
+
+
+/* ======================== Local structures ======================== */
+
+
+struct bluecard_info {
+ struct pcmcia_device *p_dev;
+
+ struct hci_dev *hdev;
+
+ spinlock_t lock; /* For serializing operations */
+ struct timer_list timer; /* For LED control */
+
+ struct sk_buff_head txq;
+ unsigned long tx_state;
+
+ unsigned long rx_state;
+ unsigned long rx_count;
+ struct sk_buff *rx_skb;
+
+ unsigned char ctrl_reg;
+ unsigned long hw_state; /* Status of the hardware and LED control */
+};
+
+
+static int bluecard_config(struct pcmcia_device *link);
+static void bluecard_release(struct pcmcia_device *link);
+
+static void bluecard_detach(struct pcmcia_device *p_dev);
+
+
+/* Default baud rate: 57600, 115200, 230400 or 460800 */
+#define DEFAULT_BAUD_RATE 230400
+
+
+/* Hardware states */
+#define CARD_READY 1
+#define CARD_HAS_PCCARD_ID 4
+#define CARD_HAS_POWER_LED 5
+#define CARD_HAS_ACTIVITY_LED 6
+
+/* Transmit states */
+#define XMIT_SENDING 1
+#define XMIT_WAKEUP 2
+#define XMIT_BUFFER_NUMBER 5 /* unset = buffer one, set = buffer two */
+#define XMIT_BUF_ONE_READY 6
+#define XMIT_BUF_TWO_READY 7
+#define XMIT_SENDING_READY 8
+
+/* Receiver states */
+#define RECV_WAIT_PACKET_TYPE 0
+#define RECV_WAIT_EVENT_HEADER 1
+#define RECV_WAIT_ACL_HEADER 2
+#define RECV_WAIT_SCO_HEADER 3
+#define RECV_WAIT_DATA 4
+
+/* Special packet types */
+#define PKT_BAUD_RATE_57600 0x80
+#define PKT_BAUD_RATE_115200 0x81
+#define PKT_BAUD_RATE_230400 0x82
+#define PKT_BAUD_RATE_460800 0x83
+
+
+/* These are the register offsets */
+#define REG_COMMAND 0x20
+#define REG_INTERRUPT 0x21
+#define REG_CONTROL 0x22
+#define REG_RX_CONTROL 0x24
+#define REG_CARD_RESET 0x30
+#define REG_LED_CTRL 0x30
+
+/* REG_COMMAND */
+#define REG_COMMAND_TX_BUF_ONE 0x01
+#define REG_COMMAND_TX_BUF_TWO 0x02
+#define REG_COMMAND_RX_BUF_ONE 0x04
+#define REG_COMMAND_RX_BUF_TWO 0x08
+#define REG_COMMAND_RX_WIN_ONE 0x00
+#define REG_COMMAND_RX_WIN_TWO 0x10
+
+/* REG_CONTROL */
+#define REG_CONTROL_BAUD_RATE_57600 0x00
+#define REG_CONTROL_BAUD_RATE_115200 0x01
+#define REG_CONTROL_BAUD_RATE_230400 0x02
+#define REG_CONTROL_BAUD_RATE_460800 0x03
+#define REG_CONTROL_RTS 0x04
+#define REG_CONTROL_BT_ON 0x08
+#define REG_CONTROL_BT_RESET 0x10
+#define REG_CONTROL_BT_RES_PU 0x20
+#define REG_CONTROL_INTERRUPT 0x40
+#define REG_CONTROL_CARD_RESET 0x80
+
+/* REG_RX_CONTROL */
+#define RTS_LEVEL_SHIFT_BITS 0x02
+
+
+
+/* ======================== LED handling routines ======================== */
+
+
+static void bluecard_activity_led_timeout(u_long arg)
+{
+ struct bluecard_info *info = (struct bluecard_info *)arg;
+ unsigned int iobase = info->p_dev->resource[0]->start;
+
+ if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
+ return;
+
+ if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
+ /* Disable activity LED */
+ outb(0x08 | 0x20, iobase + 0x30);
+ } else {
+ /* Disable power LED */
+ outb(0x00, iobase + 0x30);
+ }
+}
+
+
+static void bluecard_enable_activity_led(struct bluecard_info *info)
+{
+ unsigned int iobase = info->p_dev->resource[0]->start;
+
+ if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
+ return;
+
+ if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
+ /* Enable activity LED */
+ outb(0x10 | 0x40, iobase + 0x30);
+
+ /* Stop the LED after HZ/4 */
+ mod_timer(&(info->timer), jiffies + HZ / 4);
+ } else {
+ /* Enable power LED */
+ outb(0x08 | 0x20, iobase + 0x30);
+
+ /* Stop the LED after HZ/2 */
+ mod_timer(&(info->timer), jiffies + HZ / 2);
+ }
+}
+
+
+
+/* ======================== Interrupt handling ======================== */
+
+
+static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
+{
+ int i, actual;
+
+ actual = (len > 15) ? 15 : len;
+
+ outb_p(actual, iobase + offset);
+
+ for (i = 0; i < actual; i++)
+ outb_p(buf[i], iobase + offset + i + 1);
+
+ return actual;
+}
+
+
+static void bluecard_write_wakeup(struct bluecard_info *info)
+{
+ if (!info) {
+ BT_ERR("Unknown device");
+ return;
+ }
+
+ if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
+ return;
+
+ if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
+ set_bit(XMIT_WAKEUP, &(info->tx_state));
+ return;
+ }
+
+ do {
+ unsigned int iobase = info->p_dev->resource[0]->start;
+ unsigned int offset;
+ unsigned char command;
+ unsigned long ready_bit;
+ register struct sk_buff *skb;
+ int len;
+
+ clear_bit(XMIT_WAKEUP, &(info->tx_state));
+
+ if (!pcmcia_dev_present(info->p_dev))
+ return;
+
+ if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
+ if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
+ break;
+ offset = 0x10;
+ command = REG_COMMAND_TX_BUF_TWO;
+ ready_bit = XMIT_BUF_TWO_READY;
+ } else {
+ if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
+ break;
+ offset = 0x00;
+ command = REG_COMMAND_TX_BUF_ONE;
+ ready_bit = XMIT_BUF_ONE_READY;
+ }
+
+ skb = skb_dequeue(&(info->txq));
+ if (!skb)
+ break;
+
+ if (bt_cb(skb)->pkt_type & 0x80) {
+ /* Disable RTS */
+ info->ctrl_reg |= REG_CONTROL_RTS;
+ outb(info->ctrl_reg, iobase + REG_CONTROL);
+ }
+
+ /* Activate LED */
+ bluecard_enable_activity_led(info);
+
+ /* Send frame */
+ len = bluecard_write(iobase, offset, skb->data, skb->len);
+
+ /* Tell the FPGA to send the data */
+ outb_p(command, iobase + REG_COMMAND);
+
+ /* Mark the buffer as dirty */
+ clear_bit(ready_bit, &(info->tx_state));
+
+ if (bt_cb(skb)->pkt_type & 0x80) {
+ DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
+ DEFINE_WAIT(wait);
+
+ unsigned char baud_reg;
+
+ switch (bt_cb(skb)->pkt_type) {
+ case PKT_BAUD_RATE_460800:
+ baud_reg = REG_CONTROL_BAUD_RATE_460800;
+ break;
+ case PKT_BAUD_RATE_230400:
+ baud_reg = REG_CONTROL_BAUD_RATE_230400;
+ break;
+ case PKT_BAUD_RATE_115200:
+ baud_reg = REG_CONTROL_BAUD_RATE_115200;
+ break;
+ case PKT_BAUD_RATE_57600:
+ /* Fall through... */
+ default:
+ baud_reg = REG_CONTROL_BAUD_RATE_57600;
+ break;
+ }
+
+ /* Wait until the command reaches the baseband */
+ prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
+ schedule_timeout(HZ/10);
+ finish_wait(&wq, &wait);
+
+ /* Set baud on baseband */
+ info->ctrl_reg &= ~0x03;
+ info->ctrl_reg |= baud_reg;
+ outb(info->ctrl_reg, iobase + REG_CONTROL);
+
+ /* Enable RTS */
+ info->ctrl_reg &= ~REG_CONTROL_RTS;
+ outb(info->ctrl_reg, iobase + REG_CONTROL);
+
+ /* Wait before the next HCI packet can be send */
+ prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
+ schedule_timeout(HZ);
+ finish_wait(&wq, &wait);
+ }
+
+ if (len == skb->len) {
+ kfree_skb(skb);
+ } else {
+ skb_pull(skb, len);
+ skb_queue_head(&(info->txq), skb);
+ }
+
+ info->hdev->stat.byte_tx += len;
+
+ /* Change buffer */
+ change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
+
+ } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
+
+ clear_bit(XMIT_SENDING, &(info->tx_state));
+}
+
+
+static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
+{
+ int i, n, len;
+
+ outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
+
+ len = inb(iobase + offset);
+ n = 0;
+ i = 1;
+
+ while (n < len) {
+
+ if (i == 16) {
+ outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
+ i = 0;
+ }
+
+ buf[n] = inb(iobase + offset + i);
+
+ n++;
+ i++;
+
+ }
+
+ return len;
+}
+
+
+static void bluecard_receive(struct bluecard_info *info,
+ unsigned int offset)
+{
+ unsigned int iobase;
+ unsigned char buf[31];
+ int i, len;
+
+ if (!info) {
+ BT_ERR("Unknown device");
+ return;
+ }
+
+ iobase = info->p_dev->resource[0]->start;
+
+ if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
+ bluecard_enable_activity_led(info);
+
+ len = bluecard_read(iobase, offset, buf, sizeof(buf));
+
+ for (i = 0; i < len; i++) {
+
+ /* Allocate packet */
+ if (!info->rx_skb) {
+ info->rx_state = RECV_WAIT_PACKET_TYPE;
+ info->rx_count = 0;
+ info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
+ if (!info->rx_skb) {
+ BT_ERR("Can't allocate mem for new packet");
+ return;
+ }
+ }
+
+ if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
+
+ bt_cb(info->rx_skb)->pkt_type = buf[i];
+
+ switch (bt_cb(info->rx_skb)->pkt_type) {
+
+ case 0x00:
+ /* init packet */
+ if (offset != 0x00) {
+ set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
+ set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
+ set_bit(XMIT_SENDING_READY, &(info->tx_state));
+ bluecard_write_wakeup(info);
+ }
+
+ kfree_skb(info->rx_skb);
+ info->rx_skb = NULL;
+ break;
+
+ case HCI_EVENT_PKT:
+ info->rx_state = RECV_WAIT_EVENT_HEADER;
+ info->rx_count = HCI_EVENT_HDR_SIZE;
+ break;
+
+ case HCI_ACLDATA_PKT:
+ info->rx_state = RECV_WAIT_ACL_HEADER;
+ info->rx_count = HCI_ACL_HDR_SIZE;
+ break;
+
+ case HCI_SCODATA_PKT:
+ info->rx_state = RECV_WAIT_SCO_HEADER;
+ info->rx_count = HCI_SCO_HDR_SIZE;
+ break;
+
+ default:
+ /* unknown packet */
+ BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
+ info->hdev->stat.err_rx++;
+
+ kfree_skb(info->rx_skb);
+ info->rx_skb = NULL;
+ break;
+
+ }
+
+ } else {
+
+ *skb_put(info->rx_skb, 1) = buf[i];
+ info->rx_count--;
+
+ if (info->rx_count == 0) {
+
+ int dlen;
+ struct hci_event_hdr *eh;
+ struct hci_acl_hdr *ah;
+ struct hci_sco_hdr *sh;
+
+ switch (info->rx_state) {
+
+ case RECV_WAIT_EVENT_HEADER:
+ eh = hci_event_hdr(info->rx_skb);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = eh->plen;
+ break;
+
+ case RECV_WAIT_ACL_HEADER:
+ ah = hci_acl_hdr(info->rx_skb);
+ dlen = __le16_to_cpu(ah->dlen);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = dlen;
+ break;
+
+ case RECV_WAIT_SCO_HEADER:
+ sh = hci_sco_hdr(info->rx_skb);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = sh->dlen;
+ break;
+
+ case RECV_WAIT_DATA:
+ hci_recv_frame(info->hdev, info->rx_skb);
+ info->rx_skb = NULL;
+ break;
+
+ }
+
+ }
+
+ }
+
+
+ }
+
+ info->hdev->stat.byte_rx += len;
+}
+
+
+static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
+{
+ struct bluecard_info *info = dev_inst;
+ unsigned int iobase;
+ unsigned char reg;
+
+ if (!info || !info->hdev)
+ /* our irq handler is shared */
+ return IRQ_NONE;
+
+ if (!test_bit(CARD_READY, &(info->hw_state)))
+ return IRQ_HANDLED;
+
+ iobase = info->p_dev->resource[0]->start;
+
+ spin_lock(&(info->lock));
+
+ /* Disable interrupt */
+ info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
+ outb(info->ctrl_reg, iobase + REG_CONTROL);
+
+ reg = inb(iobase + REG_INTERRUPT);
+
+ if ((reg != 0x00) && (reg != 0xff)) {
+
+ if (reg & 0x04) {
+ bluecard_receive(info, 0x00);
+ outb(0x04, iobase + REG_INTERRUPT);
+ outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
+ }
+
+ if (reg & 0x08) {
+ bluecard_receive(info, 0x10);
+ outb(0x08, iobase + REG_INTERRUPT);
+ outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
+ }
+
+ if (reg & 0x01) {
+ set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
+ outb(0x01, iobase + REG_INTERRUPT);
+ bluecard_write_wakeup(info);
+ }
+
+ if (reg & 0x02) {
+ set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
+ outb(0x02, iobase + REG_INTERRUPT);
+ bluecard_write_wakeup(info);
+ }
+
+ }
+
+ /* Enable interrupt */
+ info->ctrl_reg |= REG_CONTROL_INTERRUPT;
+ outb(info->ctrl_reg, iobase + REG_CONTROL);
+
+ spin_unlock(&(info->lock));
+
+ return IRQ_HANDLED;
+}
+
+
+
+/* ======================== Device specific HCI commands ======================== */
+
+
+static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
+{
+ struct bluecard_info *info = hci_get_drvdata(hdev);
+ struct sk_buff *skb;
+
+ /* Ericsson baud rate command */
+ unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
+
+ skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
+ if (!skb) {
+ BT_ERR("Can't allocate mem for new packet");
+ return -1;
+ }
+
+ switch (baud) {
+ case 460800:
+ cmd[4] = 0x00;
+ bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
+ break;
+ case 230400:
+ cmd[4] = 0x01;
+ bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
+ break;
+ case 115200:
+ cmd[4] = 0x02;
+ bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
+ break;
+ case 57600:
+ /* Fall through... */
+ default:
+ cmd[4] = 0x03;
+ bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
+ break;
+ }
+
+ memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
+
+ skb_queue_tail(&(info->txq), skb);
+
+ bluecard_write_wakeup(info);
+
+ return 0;
+}
+
+
+
+/* ======================== HCI interface ======================== */
+
+
+static int bluecard_hci_flush(struct hci_dev *hdev)
+{
+ struct bluecard_info *info = hci_get_drvdata(hdev);
+
+ /* Drop TX queue */
+ skb_queue_purge(&(info->txq));
+
+ return 0;
+}
+
+
+static int bluecard_hci_open(struct hci_dev *hdev)
+{
+ struct bluecard_info *info = hci_get_drvdata(hdev);
+
+ if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
+ bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
+
+ if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
+ unsigned int iobase = info->p_dev->resource[0]->start;
+
+ /* Enable LED */
+ outb(0x08 | 0x20, iobase + 0x30);
+ }
+
+ return 0;
+}
+
+
+static int bluecard_hci_close(struct hci_dev *hdev)
+{
+ struct bluecard_info *info = hci_get_drvdata(hdev);
+
+ bluecard_hci_flush(hdev);
+
+ if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
+ unsigned int iobase = info->p_dev->resource[0]->start;
+
+ /* Disable LED */
+ outb(0x00, iobase + 0x30);
+ }
+
+ return 0;
+}
+
+
+static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct bluecard_info *info = hci_get_drvdata(hdev);
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_COMMAND_PKT:
+ hdev->stat.cmd_tx++;
+ break;
+ case HCI_ACLDATA_PKT:
+ hdev->stat.acl_tx++;
+ break;
+ case HCI_SCODATA_PKT:
+ hdev->stat.sco_tx++;
+ break;
+ }
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+ skb_queue_tail(&(info->txq), skb);
+
+ bluecard_write_wakeup(info);
+
+ return 0;
+}
+
+
+
+/* ======================== Card services HCI interaction ======================== */
+
+
+static int bluecard_open(struct bluecard_info *info)
+{
+ unsigned int iobase = info->p_dev->resource[0]->start;
+ struct hci_dev *hdev;
+ unsigned char id;
+
+ spin_lock_init(&(info->lock));
+
+ init_timer(&(info->timer));
+ info->timer.function = &bluecard_activity_led_timeout;
+ info->timer.data = (u_long)info;
+
+ skb_queue_head_init(&(info->txq));
+
+ info->rx_state = RECV_WAIT_PACKET_TYPE;
+ info->rx_count = 0;
+ info->rx_skb = NULL;
+
+ /* Initialize HCI device */
+ hdev = hci_alloc_dev();
+ if (!hdev) {
+ BT_ERR("Can't allocate HCI device");
+ return -ENOMEM;
+ }
+
+ info->hdev = hdev;
+
+ hdev->bus = HCI_PCCARD;
+ hci_set_drvdata(hdev, info);
+ SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
+
+ hdev->open = bluecard_hci_open;
+ hdev->close = bluecard_hci_close;
+ hdev->flush = bluecard_hci_flush;
+ hdev->send = bluecard_hci_send_frame;
+
+ id = inb(iobase + 0x30);
+
+ if ((id & 0x0f) == 0x02)
+ set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
+
+ if (id & 0x10)
+ set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
+
+ if (id & 0x20)
+ set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
+
+ /* Reset card */
+ info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
+ outb(info->ctrl_reg, iobase + REG_CONTROL);
+
+ /* Turn FPGA off */
+ outb(0x80, iobase + 0x30);
+
+ /* Wait some time */
+ msleep(10);
+
+ /* Turn FPGA on */
+ outb(0x00, iobase + 0x30);
+
+ /* Activate card */
+ info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
+ outb(info->ctrl_reg, iobase + REG_CONTROL);
+
+ /* Enable interrupt */
+ outb(0xff, iobase + REG_INTERRUPT);
+ info->ctrl_reg |= REG_CONTROL_INTERRUPT;
+ outb(info->ctrl_reg, iobase + REG_CONTROL);
+
+ if ((id & 0x0f) == 0x03) {
+ /* Disable RTS */
+ info->ctrl_reg |= REG_CONTROL_RTS;
+ outb(info->ctrl_reg, iobase + REG_CONTROL);
+
+ /* Set baud rate */
+ info->ctrl_reg |= 0x03;
+ outb(info->ctrl_reg, iobase + REG_CONTROL);
+
+ /* Enable RTS */
+ info->ctrl_reg &= ~REG_CONTROL_RTS;
+ outb(info->ctrl_reg, iobase + REG_CONTROL);
+
+ set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
+ set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
+ set_bit(XMIT_SENDING_READY, &(info->tx_state));
+ }
+
+ /* Start the RX buffers */
+ outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
+ outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
+
+ /* Signal that the hardware is ready */
+ set_bit(CARD_READY, &(info->hw_state));
+
+ /* Drop TX queue */
+ skb_queue_purge(&(info->txq));
+
+ /* Control the point at which RTS is enabled */
+ outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
+
+ /* Timeout before it is safe to send the first HCI packet */
+ msleep(1250);
+
+ /* Register HCI device */
+ if (hci_register_dev(hdev) < 0) {
+ BT_ERR("Can't register HCI device");
+ info->hdev = NULL;
+ hci_free_dev(hdev);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+
+static int bluecard_close(struct bluecard_info *info)
+{
+ unsigned int iobase = info->p_dev->resource[0]->start;
+ struct hci_dev *hdev = info->hdev;
+
+ if (!hdev)
+ return -ENODEV;
+
+ bluecard_hci_close(hdev);
+
+ clear_bit(CARD_READY, &(info->hw_state));
+
+ /* Reset card */
+ info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
+ outb(info->ctrl_reg, iobase + REG_CONTROL);
+
+ /* Turn FPGA off */
+ outb(0x80, iobase + 0x30);
+
+ hci_unregister_dev(hdev);
+ hci_free_dev(hdev);
+
+ return 0;
+}
+
+static int bluecard_probe(struct pcmcia_device *link)
+{
+ struct bluecard_info *info;
+
+ /* Create new info device */
+ info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->p_dev = link;
+ link->priv = info;
+
+ link->config_flags |= CONF_ENABLE_IRQ;
+
+ return bluecard_config(link);
+}
+
+
+static void bluecard_detach(struct pcmcia_device *link)
+{
+ bluecard_release(link);
+}
+
+
+static int bluecard_config(struct pcmcia_device *link)
+{
+ struct bluecard_info *info = link->priv;
+ int i, n;
+
+ link->config_index = 0x20;
+
+ link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
+ link->resource[0]->end = 64;
+ link->io_lines = 6;
+
+ for (n = 0; n < 0x400; n += 0x40) {
+ link->resource[0]->start = n ^ 0x300;
+ i = pcmcia_request_io(link);
+ if (i == 0)
+ break;
+ }
+
+ if (i != 0)
+ goto failed;
+
+ i = pcmcia_request_irq(link, bluecard_interrupt);
+ if (i != 0)
+ goto failed;
+
+ i = pcmcia_enable_device(link);
+ if (i != 0)
+ goto failed;
+
+ if (bluecard_open(info) != 0)
+ goto failed;
+
+ return 0;
+
+failed:
+ bluecard_release(link);
+ return -ENODEV;
+}
+
+
+static void bluecard_release(struct pcmcia_device *link)
+{
+ struct bluecard_info *info = link->priv;
+
+ bluecard_close(info);
+
+ del_timer_sync(&(info->timer));
+
+ pcmcia_disable_device(link);
+}
+
+static const struct pcmcia_device_id bluecard_ids[] = {
+ PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
+ PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
+ PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
+ PCMCIA_DEVICE_NULL
+};
+MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
+
+static struct pcmcia_driver bluecard_driver = {
+ .owner = THIS_MODULE,
+ .name = "bluecard_cs",
+ .probe = bluecard_probe,
+ .remove = bluecard_detach,
+ .id_table = bluecard_ids,
+};
+module_pcmcia_driver(bluecard_driver);
diff --git a/drivers/bluetooth/bpa10x.c b/drivers/bluetooth/bpa10x.c
new file mode 100644
index 0000000..49c397e
--- /dev/null
+++ b/drivers/bluetooth/bpa10x.c
@@ -0,0 +1,460 @@
+/*
+ *
+ * Digianswer Bluetooth USB driver
+ *
+ * Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/skbuff.h>
+
+#include <linux/usb.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "hci_uart.h"
+
+#define VERSION "0.11"
+
+static const struct usb_device_id bpa10x_table[] = {
+ /* Tektronix BPA 100/105 (Digianswer) */
+ { USB_DEVICE(0x08fd, 0x0002) },
+
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, bpa10x_table);
+
+struct bpa10x_data {
+ struct hci_dev *hdev;
+ struct usb_device *udev;
+
+ struct usb_anchor tx_anchor;
+ struct usb_anchor rx_anchor;
+
+ struct sk_buff *rx_skb[2];
+};
+
+static void bpa10x_tx_complete(struct urb *urb)
+{
+ struct sk_buff *skb = urb->context;
+ struct hci_dev *hdev = (struct hci_dev *) skb->dev;
+
+ BT_DBG("%s urb %p status %d count %d", hdev->name,
+ urb, urb->status, urb->actual_length);
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ goto done;
+
+ if (!urb->status)
+ hdev->stat.byte_tx += urb->transfer_buffer_length;
+ else
+ hdev->stat.err_tx++;
+
+done:
+ kfree(urb->setup_packet);
+
+ kfree_skb(skb);
+}
+
+#define HCI_VENDOR_HDR_SIZE 5
+
+#define HCI_RECV_VENDOR \
+ .type = HCI_VENDOR_PKT, \
+ .hlen = HCI_VENDOR_HDR_SIZE, \
+ .loff = 3, \
+ .lsize = 2, \
+ .maxlen = HCI_MAX_FRAME_SIZE
+
+static const struct h4_recv_pkt bpa10x_recv_pkts[] = {
+ { H4_RECV_ACL, .recv = hci_recv_frame },
+ { H4_RECV_SCO, .recv = hci_recv_frame },
+ { H4_RECV_EVENT, .recv = hci_recv_frame },
+ { HCI_RECV_VENDOR, .recv = hci_recv_diag },
+};
+
+static void bpa10x_rx_complete(struct urb *urb)
+{
+ struct hci_dev *hdev = urb->context;
+ struct bpa10x_data *data = hci_get_drvdata(hdev);
+ int err;
+
+ BT_DBG("%s urb %p status %d count %d", hdev->name,
+ urb, urb->status, urb->actual_length);
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ return;
+
+ if (urb->status == 0) {
+ bool idx = usb_pipebulk(urb->pipe);
+
+ data->rx_skb[idx] = h4_recv_buf(hdev, data->rx_skb[idx],
+ urb->transfer_buffer,
+ urb->actual_length,
+ bpa10x_recv_pkts,
+ ARRAY_SIZE(bpa10x_recv_pkts));
+ if (IS_ERR(data->rx_skb[idx])) {
+ BT_ERR("%s corrupted event packet", hdev->name);
+ hdev->stat.err_rx++;
+ data->rx_skb[idx] = NULL;
+ }
+ }
+
+ usb_anchor_urb(urb, &data->rx_anchor);
+
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0) {
+ BT_ERR("%s urb %p failed to resubmit (%d)",
+ hdev->name, urb, -err);
+ usb_unanchor_urb(urb);
+ }
+}
+
+static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev)
+{
+ struct bpa10x_data *data = hci_get_drvdata(hdev);
+ struct urb *urb;
+ unsigned char *buf;
+ unsigned int pipe;
+ int err, size = 16;
+
+ BT_DBG("%s", hdev->name);
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb)
+ return -ENOMEM;
+
+ buf = kmalloc(size, GFP_KERNEL);
+ if (!buf) {
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ pipe = usb_rcvintpipe(data->udev, 0x81);
+
+ usb_fill_int_urb(urb, data->udev, pipe, buf, size,
+ bpa10x_rx_complete, hdev, 1);
+
+ urb->transfer_flags |= URB_FREE_BUFFER;
+
+ usb_anchor_urb(urb, &data->rx_anchor);
+
+ err = usb_submit_urb(urb, GFP_KERNEL);
+ if (err < 0) {
+ BT_ERR("%s urb %p submission failed (%d)",
+ hdev->name, urb, -err);
+ usb_unanchor_urb(urb);
+ }
+
+ usb_free_urb(urb);
+
+ return err;
+}
+
+static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev)
+{
+ struct bpa10x_data *data = hci_get_drvdata(hdev);
+ struct urb *urb;
+ unsigned char *buf;
+ unsigned int pipe;
+ int err, size = 64;
+
+ BT_DBG("%s", hdev->name);
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb)
+ return -ENOMEM;
+
+ buf = kmalloc(size, GFP_KERNEL);
+ if (!buf) {
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ pipe = usb_rcvbulkpipe(data->udev, 0x82);
+
+ usb_fill_bulk_urb(urb, data->udev, pipe,
+ buf, size, bpa10x_rx_complete, hdev);
+
+ urb->transfer_flags |= URB_FREE_BUFFER;
+
+ usb_anchor_urb(urb, &data->rx_anchor);
+
+ err = usb_submit_urb(urb, GFP_KERNEL);
+ if (err < 0) {
+ BT_ERR("%s urb %p submission failed (%d)",
+ hdev->name, urb, -err);
+ usb_unanchor_urb(urb);
+ }
+
+ usb_free_urb(urb);
+
+ return err;
+}
+
+static int bpa10x_open(struct hci_dev *hdev)
+{
+ struct bpa10x_data *data = hci_get_drvdata(hdev);
+ int err;
+
+ BT_DBG("%s", hdev->name);
+
+ err = bpa10x_submit_intr_urb(hdev);
+ if (err < 0)
+ goto error;
+
+ err = bpa10x_submit_bulk_urb(hdev);
+ if (err < 0)
+ goto error;
+
+ return 0;
+
+error:
+ usb_kill_anchored_urbs(&data->rx_anchor);
+
+ return err;
+}
+
+static int bpa10x_close(struct hci_dev *hdev)
+{
+ struct bpa10x_data *data = hci_get_drvdata(hdev);
+
+ BT_DBG("%s", hdev->name);
+
+ usb_kill_anchored_urbs(&data->rx_anchor);
+
+ return 0;
+}
+
+static int bpa10x_flush(struct hci_dev *hdev)
+{
+ struct bpa10x_data *data = hci_get_drvdata(hdev);
+
+ BT_DBG("%s", hdev->name);
+
+ usb_kill_anchored_urbs(&data->tx_anchor);
+
+ return 0;
+}
+
+static int bpa10x_setup(struct hci_dev *hdev)
+{
+ const u8 req[] = { 0x07 };
+ struct sk_buff *skb;
+
+ BT_DBG("%s", hdev->name);
+
+ /* Read revision string */
+ skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
+
+ kfree_skb(skb);
+ return 0;
+}
+
+static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct bpa10x_data *data = hci_get_drvdata(hdev);
+ struct usb_ctrlrequest *dr;
+ struct urb *urb;
+ unsigned int pipe;
+ int err;
+
+ BT_DBG("%s", hdev->name);
+
+ skb->dev = (void *) hdev;
+
+ urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!urb)
+ return -ENOMEM;
+
+ /* Prepend skb with frame type */
+ *skb_push(skb, 1) = bt_cb(skb)->pkt_type;
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_COMMAND_PKT:
+ dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
+ if (!dr) {
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ dr->bRequestType = USB_TYPE_VENDOR;
+ dr->bRequest = 0;
+ dr->wIndex = 0;
+ dr->wValue = 0;
+ dr->wLength = __cpu_to_le16(skb->len);
+
+ pipe = usb_sndctrlpipe(data->udev, 0x00);
+
+ usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
+ skb->data, skb->len, bpa10x_tx_complete, skb);
+
+ hdev->stat.cmd_tx++;
+ break;
+
+ case HCI_ACLDATA_PKT:
+ pipe = usb_sndbulkpipe(data->udev, 0x02);
+
+ usb_fill_bulk_urb(urb, data->udev, pipe,
+ skb->data, skb->len, bpa10x_tx_complete, skb);
+
+ hdev->stat.acl_tx++;
+ break;
+
+ case HCI_SCODATA_PKT:
+ pipe = usb_sndbulkpipe(data->udev, 0x02);
+
+ usb_fill_bulk_urb(urb, data->udev, pipe,
+ skb->data, skb->len, bpa10x_tx_complete, skb);
+
+ hdev->stat.sco_tx++;
+ break;
+
+ default:
+ usb_free_urb(urb);
+ return -EILSEQ;
+ }
+
+ usb_anchor_urb(urb, &data->tx_anchor);
+
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0) {
+ BT_ERR("%s urb %p submission failed", hdev->name, urb);
+ kfree(urb->setup_packet);
+ usb_unanchor_urb(urb);
+ }
+
+ usb_free_urb(urb);
+
+ return 0;
+}
+
+static int bpa10x_set_diag(struct hci_dev *hdev, bool enable)
+{
+ const u8 req[] = { 0x00, enable };
+ struct sk_buff *skb;
+
+ BT_DBG("%s", hdev->name);
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ return -ENETDOWN;
+
+ /* Enable sniffer operation */
+ skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ kfree_skb(skb);
+ return 0;
+}
+
+static int bpa10x_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+ struct bpa10x_data *data;
+ struct hci_dev *hdev;
+ int err;
+
+ BT_DBG("intf %p id %p", intf, id);
+
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
+ return -ENODEV;
+
+ data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->udev = interface_to_usbdev(intf);
+
+ init_usb_anchor(&data->tx_anchor);
+ init_usb_anchor(&data->rx_anchor);
+
+ hdev = hci_alloc_dev();
+ if (!hdev)
+ return -ENOMEM;
+
+ hdev->bus = HCI_USB;
+ hci_set_drvdata(hdev, data);
+
+ data->hdev = hdev;
+
+ SET_HCIDEV_DEV(hdev, &intf->dev);
+
+ hdev->open = bpa10x_open;
+ hdev->close = bpa10x_close;
+ hdev->flush = bpa10x_flush;
+ hdev->setup = bpa10x_setup;
+ hdev->send = bpa10x_send_frame;
+ hdev->set_diag = bpa10x_set_diag;
+
+ set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
+
+ err = hci_register_dev(hdev);
+ if (err < 0) {
+ hci_free_dev(hdev);
+ return err;
+ }
+
+ usb_set_intfdata(intf, data);
+
+ return 0;
+}
+
+static void bpa10x_disconnect(struct usb_interface *intf)
+{
+ struct bpa10x_data *data = usb_get_intfdata(intf);
+
+ BT_DBG("intf %p", intf);
+
+ if (!data)
+ return;
+
+ usb_set_intfdata(intf, NULL);
+
+ hci_unregister_dev(data->hdev);
+
+ hci_free_dev(data->hdev);
+ kfree_skb(data->rx_skb[0]);
+ kfree_skb(data->rx_skb[1]);
+}
+
+static struct usb_driver bpa10x_driver = {
+ .name = "bpa10x",
+ .probe = bpa10x_probe,
+ .disconnect = bpa10x_disconnect,
+ .id_table = bpa10x_table,
+ .disable_hub_initiated_lpm = 1,
+};
+
+module_usb_driver(bpa10x_driver);
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
diff --git a/drivers/bluetooth/bt3c_cs.c b/drivers/bluetooth/bt3c_cs.c
new file mode 100644
index 0000000..5803aae
--- /dev/null
+++ b/drivers/bluetooth/bt3c_cs.c
@@ -0,0 +1,743 @@
+/*
+ *
+ * Driver for the 3Com Bluetooth PCMCIA card
+ *
+ * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>
+ * Jose Orlando Pereira <jop@di.uminho.pt>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/spinlock.h>
+#include <linux/moduleparam.h>
+
+#include <linux/skbuff.h>
+#include <linux/string.h>
+#include <linux/serial.h>
+#include <linux/serial_reg.h>
+#include <linux/bitops.h>
+#include <asm/io.h>
+
+#include <linux/device.h>
+#include <linux/firmware.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+
+
+/* ======================== Module parameters ======================== */
+
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Bluetooth driver for the 3Com Bluetooth PCMCIA card");
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("BT3CPCC.bin");
+
+
+
+/* ======================== Local structures ======================== */
+
+
+struct bt3c_info {
+ struct pcmcia_device *p_dev;
+
+ struct hci_dev *hdev;
+
+ spinlock_t lock; /* For serializing operations */
+
+ struct sk_buff_head txq;
+ unsigned long tx_state;
+
+ unsigned long rx_state;
+ unsigned long rx_count;
+ struct sk_buff *rx_skb;
+};
+
+
+static int bt3c_config(struct pcmcia_device *link);
+static void bt3c_release(struct pcmcia_device *link);
+
+static void bt3c_detach(struct pcmcia_device *p_dev);
+
+
+/* Transmit states */
+#define XMIT_SENDING 1
+#define XMIT_WAKEUP 2
+#define XMIT_WAITING 8
+
+/* Receiver states */
+#define RECV_WAIT_PACKET_TYPE 0
+#define RECV_WAIT_EVENT_HEADER 1
+#define RECV_WAIT_ACL_HEADER 2
+#define RECV_WAIT_SCO_HEADER 3
+#define RECV_WAIT_DATA 4
+
+
+
+/* ======================== Special I/O functions ======================== */
+
+
+#define DATA_L 0
+#define DATA_H 1
+#define ADDR_L 2
+#define ADDR_H 3
+#define CONTROL 4
+
+
+static inline void bt3c_address(unsigned int iobase, unsigned short addr)
+{
+ outb(addr & 0xff, iobase + ADDR_L);
+ outb((addr >> 8) & 0xff, iobase + ADDR_H);
+}
+
+
+static inline void bt3c_put(unsigned int iobase, unsigned short value)
+{
+ outb(value & 0xff, iobase + DATA_L);
+ outb((value >> 8) & 0xff, iobase + DATA_H);
+}
+
+
+static inline void bt3c_io_write(unsigned int iobase, unsigned short addr, unsigned short value)
+{
+ bt3c_address(iobase, addr);
+ bt3c_put(iobase, value);
+}
+
+
+static inline unsigned short bt3c_get(unsigned int iobase)
+{
+ unsigned short value = inb(iobase + DATA_L);
+
+ value |= inb(iobase + DATA_H) << 8;
+
+ return value;
+}
+
+
+static inline unsigned short bt3c_read(unsigned int iobase, unsigned short addr)
+{
+ bt3c_address(iobase, addr);
+
+ return bt3c_get(iobase);
+}
+
+
+
+/* ======================== Interrupt handling ======================== */
+
+
+static int bt3c_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
+{
+ int actual = 0;
+
+ bt3c_address(iobase, 0x7080);
+
+ /* Fill FIFO with current frame */
+ while (actual < len) {
+ /* Transmit next byte */
+ bt3c_put(iobase, buf[actual]);
+ actual++;
+ }
+
+ bt3c_io_write(iobase, 0x7005, actual);
+
+ return actual;
+}
+
+
+static void bt3c_write_wakeup(struct bt3c_info *info)
+{
+ if (!info) {
+ BT_ERR("Unknown device");
+ return;
+ }
+
+ if (test_and_set_bit(XMIT_SENDING, &(info->tx_state)))
+ return;
+
+ do {
+ unsigned int iobase = info->p_dev->resource[0]->start;
+ register struct sk_buff *skb;
+ int len;
+
+ if (!pcmcia_dev_present(info->p_dev))
+ break;
+
+ skb = skb_dequeue(&(info->txq));
+ if (!skb) {
+ clear_bit(XMIT_SENDING, &(info->tx_state));
+ break;
+ }
+
+ /* Send frame */
+ len = bt3c_write(iobase, 256, skb->data, skb->len);
+
+ if (len != skb->len)
+ BT_ERR("Very strange");
+
+ kfree_skb(skb);
+
+ info->hdev->stat.byte_tx += len;
+
+ } while (0);
+}
+
+
+static void bt3c_receive(struct bt3c_info *info)
+{
+ unsigned int iobase;
+ int size = 0, avail;
+
+ if (!info) {
+ BT_ERR("Unknown device");
+ return;
+ }
+
+ iobase = info->p_dev->resource[0]->start;
+
+ avail = bt3c_read(iobase, 0x7006);
+
+ bt3c_address(iobase, 0x7480);
+ while (size < avail) {
+ size++;
+ info->hdev->stat.byte_rx++;
+
+ /* Allocate packet */
+ if (!info->rx_skb) {
+ info->rx_state = RECV_WAIT_PACKET_TYPE;
+ info->rx_count = 0;
+ info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
+ if (!info->rx_skb) {
+ BT_ERR("Can't allocate mem for new packet");
+ return;
+ }
+ }
+
+
+ if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
+
+ bt_cb(info->rx_skb)->pkt_type = inb(iobase + DATA_L);
+ inb(iobase + DATA_H);
+
+ switch (bt_cb(info->rx_skb)->pkt_type) {
+
+ case HCI_EVENT_PKT:
+ info->rx_state = RECV_WAIT_EVENT_HEADER;
+ info->rx_count = HCI_EVENT_HDR_SIZE;
+ break;
+
+ case HCI_ACLDATA_PKT:
+ info->rx_state = RECV_WAIT_ACL_HEADER;
+ info->rx_count = HCI_ACL_HDR_SIZE;
+ break;
+
+ case HCI_SCODATA_PKT:
+ info->rx_state = RECV_WAIT_SCO_HEADER;
+ info->rx_count = HCI_SCO_HDR_SIZE;
+ break;
+
+ default:
+ /* Unknown packet */
+ BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
+ info->hdev->stat.err_rx++;
+
+ kfree_skb(info->rx_skb);
+ info->rx_skb = NULL;
+ break;
+
+ }
+
+ } else {
+
+ __u8 x = inb(iobase + DATA_L);
+
+ *skb_put(info->rx_skb, 1) = x;
+ inb(iobase + DATA_H);
+ info->rx_count--;
+
+ if (info->rx_count == 0) {
+
+ int dlen;
+ struct hci_event_hdr *eh;
+ struct hci_acl_hdr *ah;
+ struct hci_sco_hdr *sh;
+
+ switch (info->rx_state) {
+
+ case RECV_WAIT_EVENT_HEADER:
+ eh = hci_event_hdr(info->rx_skb);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = eh->plen;
+ break;
+
+ case RECV_WAIT_ACL_HEADER:
+ ah = hci_acl_hdr(info->rx_skb);
+ dlen = __le16_to_cpu(ah->dlen);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = dlen;
+ break;
+
+ case RECV_WAIT_SCO_HEADER:
+ sh = hci_sco_hdr(info->rx_skb);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = sh->dlen;
+ break;
+
+ case RECV_WAIT_DATA:
+ hci_recv_frame(info->hdev, info->rx_skb);
+ info->rx_skb = NULL;
+ break;
+
+ }
+
+ }
+
+ }
+
+ }
+
+ bt3c_io_write(iobase, 0x7006, 0x0000);
+}
+
+
+static irqreturn_t bt3c_interrupt(int irq, void *dev_inst)
+{
+ struct bt3c_info *info = dev_inst;
+ unsigned int iobase;
+ int iir;
+ irqreturn_t r = IRQ_NONE;
+
+ if (!info || !info->hdev)
+ /* our irq handler is shared */
+ return IRQ_NONE;
+
+ iobase = info->p_dev->resource[0]->start;
+
+ spin_lock(&(info->lock));
+
+ iir = inb(iobase + CONTROL);
+ if (iir & 0x80) {
+ int stat = bt3c_read(iobase, 0x7001);
+
+ if ((stat & 0xff) == 0x7f) {
+ BT_ERR("Very strange (stat=0x%04x)", stat);
+ } else if ((stat & 0xff) != 0xff) {
+ if (stat & 0x0020) {
+ int status = bt3c_read(iobase, 0x7002) & 0x10;
+ BT_INFO("%s: Antenna %s", info->hdev->name,
+ status ? "out" : "in");
+ }
+ if (stat & 0x0001)
+ bt3c_receive(info);
+ if (stat & 0x0002) {
+ clear_bit(XMIT_SENDING, &(info->tx_state));
+ bt3c_write_wakeup(info);
+ }
+
+ bt3c_io_write(iobase, 0x7001, 0x0000);
+
+ outb(iir, iobase + CONTROL);
+ }
+ r = IRQ_HANDLED;
+ }
+
+ spin_unlock(&(info->lock));
+
+ return r;
+}
+
+
+
+/* ======================== HCI interface ======================== */
+
+
+static int bt3c_hci_flush(struct hci_dev *hdev)
+{
+ struct bt3c_info *info = hci_get_drvdata(hdev);
+
+ /* Drop TX queue */
+ skb_queue_purge(&(info->txq));
+
+ return 0;
+}
+
+
+static int bt3c_hci_open(struct hci_dev *hdev)
+{
+ return 0;
+}
+
+
+static int bt3c_hci_close(struct hci_dev *hdev)
+{
+ bt3c_hci_flush(hdev);
+
+ return 0;
+}
+
+
+static int bt3c_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct bt3c_info *info = hci_get_drvdata(hdev);
+ unsigned long flags;
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_COMMAND_PKT:
+ hdev->stat.cmd_tx++;
+ break;
+ case HCI_ACLDATA_PKT:
+ hdev->stat.acl_tx++;
+ break;
+ case HCI_SCODATA_PKT:
+ hdev->stat.sco_tx++;
+ break;
+ }
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+ skb_queue_tail(&(info->txq), skb);
+
+ spin_lock_irqsave(&(info->lock), flags);
+
+ bt3c_write_wakeup(info);
+
+ spin_unlock_irqrestore(&(info->lock), flags);
+
+ return 0;
+}
+
+
+
+/* ======================== Card services HCI interaction ======================== */
+
+
+static int bt3c_load_firmware(struct bt3c_info *info,
+ const unsigned char *firmware,
+ int count)
+{
+ char *ptr = (char *) firmware;
+ char b[9];
+ unsigned int iobase, tmp;
+ unsigned long size, addr, fcs;
+ int i, err = 0;
+
+ iobase = info->p_dev->resource[0]->start;
+
+ /* Reset */
+ bt3c_io_write(iobase, 0x8040, 0x0404);
+ bt3c_io_write(iobase, 0x8040, 0x0400);
+
+ udelay(1);
+
+ bt3c_io_write(iobase, 0x8040, 0x0404);
+
+ udelay(17);
+
+ /* Load */
+ while (count) {
+ if (ptr[0] != 'S') {
+ BT_ERR("Bad address in firmware");
+ err = -EFAULT;
+ goto error;
+ }
+
+ memset(b, 0, sizeof(b));
+ memcpy(b, ptr + 2, 2);
+ if (kstrtoul(b, 16, &size) < 0)
+ return -EINVAL;
+
+ memset(b, 0, sizeof(b));
+ memcpy(b, ptr + 4, 8);
+ if (kstrtoul(b, 16, &addr) < 0)
+ return -EINVAL;
+
+ memset(b, 0, sizeof(b));
+ memcpy(b, ptr + (size * 2) + 2, 2);
+ if (kstrtoul(b, 16, &fcs) < 0)
+ return -EINVAL;
+
+ memset(b, 0, sizeof(b));
+ for (tmp = 0, i = 0; i < size; i++) {
+ memcpy(b, ptr + (i * 2) + 2, 2);
+ tmp += simple_strtol(b, NULL, 16);
+ }
+
+ if (((tmp + fcs) & 0xff) != 0xff) {
+ BT_ERR("Checksum error in firmware");
+ err = -EILSEQ;
+ goto error;
+ }
+
+ if (ptr[1] == '3') {
+ bt3c_address(iobase, addr);
+
+ memset(b, 0, sizeof(b));
+ for (i = 0; i < (size - 4) / 2; i++) {
+ memcpy(b, ptr + (i * 4) + 12, 4);
+ tmp = simple_strtoul(b, NULL, 16);
+ bt3c_put(iobase, tmp);
+ }
+ }
+
+ ptr += (size * 2) + 6;
+ count -= (size * 2) + 6;
+ }
+
+ udelay(17);
+
+ /* Boot */
+ bt3c_address(iobase, 0x3000);
+ outb(inb(iobase + CONTROL) | 0x40, iobase + CONTROL);
+
+error:
+ udelay(17);
+
+ /* Clear */
+ bt3c_io_write(iobase, 0x7006, 0x0000);
+ bt3c_io_write(iobase, 0x7005, 0x0000);
+ bt3c_io_write(iobase, 0x7001, 0x0000);
+
+ return err;
+}
+
+
+static int bt3c_open(struct bt3c_info *info)
+{
+ const struct firmware *firmware;
+ struct hci_dev *hdev;
+ int err;
+
+ spin_lock_init(&(info->lock));
+
+ skb_queue_head_init(&(info->txq));
+
+ info->rx_state = RECV_WAIT_PACKET_TYPE;
+ info->rx_count = 0;
+ info->rx_skb = NULL;
+
+ /* Initialize HCI device */
+ hdev = hci_alloc_dev();
+ if (!hdev) {
+ BT_ERR("Can't allocate HCI device");
+ return -ENOMEM;
+ }
+
+ info->hdev = hdev;
+
+ hdev->bus = HCI_PCCARD;
+ hci_set_drvdata(hdev, info);
+ SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
+
+ hdev->open = bt3c_hci_open;
+ hdev->close = bt3c_hci_close;
+ hdev->flush = bt3c_hci_flush;
+ hdev->send = bt3c_hci_send_frame;
+
+ /* Load firmware */
+ err = request_firmware(&firmware, "BT3CPCC.bin", &info->p_dev->dev);
+ if (err < 0) {
+ BT_ERR("Firmware request failed");
+ goto error;
+ }
+
+ err = bt3c_load_firmware(info, firmware->data, firmware->size);
+
+ release_firmware(firmware);
+
+ if (err < 0) {
+ BT_ERR("Firmware loading failed");
+ goto error;
+ }
+
+ /* Timeout before it is safe to send the first HCI packet */
+ msleep(1000);
+
+ /* Register HCI device */
+ err = hci_register_dev(hdev);
+ if (err < 0) {
+ BT_ERR("Can't register HCI device");
+ goto error;
+ }
+
+ return 0;
+
+error:
+ info->hdev = NULL;
+ hci_free_dev(hdev);
+ return err;
+}
+
+
+static int bt3c_close(struct bt3c_info *info)
+{
+ struct hci_dev *hdev = info->hdev;
+
+ if (!hdev)
+ return -ENODEV;
+
+ bt3c_hci_close(hdev);
+
+ hci_unregister_dev(hdev);
+ hci_free_dev(hdev);
+
+ return 0;
+}
+
+static int bt3c_probe(struct pcmcia_device *link)
+{
+ struct bt3c_info *info;
+
+ /* Create new info device */
+ info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->p_dev = link;
+ link->priv = info;
+
+ link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
+ CONF_AUTO_SET_IO;
+
+ return bt3c_config(link);
+}
+
+
+static void bt3c_detach(struct pcmcia_device *link)
+{
+ bt3c_release(link);
+}
+
+static int bt3c_check_config(struct pcmcia_device *p_dev, void *priv_data)
+{
+ int *try = priv_data;
+
+ if (!try)
+ p_dev->io_lines = 16;
+
+ if ((p_dev->resource[0]->end != 8) || (p_dev->resource[0]->start == 0))
+ return -EINVAL;
+
+ p_dev->resource[0]->end = 8;
+ p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+ p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
+
+ return pcmcia_request_io(p_dev);
+}
+
+static int bt3c_check_config_notpicky(struct pcmcia_device *p_dev,
+ void *priv_data)
+{
+ static unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
+ int j;
+
+ if (p_dev->io_lines > 3)
+ return -ENODEV;
+
+ p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+ p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
+ p_dev->resource[0]->end = 8;
+
+ for (j = 0; j < 5; j++) {
+ p_dev->resource[0]->start = base[j];
+ p_dev->io_lines = base[j] ? 16 : 3;
+ if (!pcmcia_request_io(p_dev))
+ return 0;
+ }
+ return -ENODEV;
+}
+
+static int bt3c_config(struct pcmcia_device *link)
+{
+ struct bt3c_info *info = link->priv;
+ int i;
+ unsigned long try;
+
+ /* First pass: look for a config entry that looks normal.
+ Two tries: without IO aliases, then with aliases */
+ for (try = 0; try < 2; try++)
+ if (!pcmcia_loop_config(link, bt3c_check_config, (void *) try))
+ goto found_port;
+
+ /* Second pass: try to find an entry that isn't picky about
+ its base address, then try to grab any standard serial port
+ address, and finally try to get any free port. */
+ if (!pcmcia_loop_config(link, bt3c_check_config_notpicky, NULL))
+ goto found_port;
+
+ BT_ERR("No usable port range found");
+ goto failed;
+
+found_port:
+ i = pcmcia_request_irq(link, &bt3c_interrupt);
+ if (i != 0)
+ goto failed;
+
+ i = pcmcia_enable_device(link);
+ if (i != 0)
+ goto failed;
+
+ if (bt3c_open(info) != 0)
+ goto failed;
+
+ return 0;
+
+failed:
+ bt3c_release(link);
+ return -ENODEV;
+}
+
+
+static void bt3c_release(struct pcmcia_device *link)
+{
+ struct bt3c_info *info = link->priv;
+
+ bt3c_close(info);
+
+ pcmcia_disable_device(link);
+}
+
+
+static const struct pcmcia_device_id bt3c_ids[] = {
+ PCMCIA_DEVICE_PROD_ID13("3COM", "Bluetooth PC Card", 0xefce0a31, 0xd4ce9b02),
+ PCMCIA_DEVICE_NULL
+};
+MODULE_DEVICE_TABLE(pcmcia, bt3c_ids);
+
+static struct pcmcia_driver bt3c_driver = {
+ .owner = THIS_MODULE,
+ .name = "bt3c_cs",
+ .probe = bt3c_probe,
+ .remove = bt3c_detach,
+ .id_table = bt3c_ids,
+};
+module_pcmcia_driver(bt3c_driver);
diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c
new file mode 100644
index 0000000..0b69794
--- /dev/null
+++ b/drivers/bluetooth/btbcm.c
@@ -0,0 +1,555 @@
+/*
+ *
+ * Bluetooth support for Broadcom devices
+ *
+ * Copyright (C) 2015 Intel Corporation
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/firmware.h>
+#include <asm/unaligned.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btbcm.h"
+
+#define VERSION "0.1"
+
+#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
+#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
+#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
+
+int btbcm_check_bdaddr(struct hci_dev *hdev)
+{
+ struct hci_rp_read_bd_addr *bda;
+ struct sk_buff *skb;
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ int err = PTR_ERR(skb);
+ BT_ERR("%s: BCM: Reading device address failed (%d)",
+ hdev->name, err);
+ return err;
+ }
+
+ if (skb->len != sizeof(*bda)) {
+ BT_ERR("%s: BCM: Device address length mismatch", hdev->name);
+ kfree_skb(skb);
+ return -EIO;
+ }
+
+ bda = (struct hci_rp_read_bd_addr *)skb->data;
+
+ /* Check if the address indicates a controller with either an
+ * invalid or default address. In both cases the device needs
+ * to be marked as not having a valid address.
+ *
+ * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
+ * with no configured address.
+ *
+ * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
+ * with waiting for configuration state.
+ *
+ * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
+ * with waiting for configuration state.
+ */
+ if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
+ !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
+ !bacmp(&bda->bdaddr, BDADDR_BCM4330B1)) {
+ BT_INFO("%s: BCM: Using default device address (%pMR)",
+ hdev->name, &bda->bdaddr);
+ set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
+ }
+
+ kfree_skb(skb);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
+
+int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+ struct sk_buff *skb;
+ int err;
+
+ skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: BCM: Change address command failed (%d)",
+ hdev->name, err);
+ return err;
+ }
+ kfree_skb(skb);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
+
+int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
+{
+ const struct hci_command_hdr *cmd;
+ const u8 *fw_ptr;
+ size_t fw_size;
+ struct sk_buff *skb;
+ u16 opcode;
+ int err = 0;
+
+ /* Start Download */
+ skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: BCM: Download Minidrv command failed (%d)",
+ hdev->name, err);
+ goto done;
+ }
+ kfree_skb(skb);
+
+ /* 50 msec delay after Download Minidrv completes */
+ msleep(50);
+
+ fw_ptr = fw->data;
+ fw_size = fw->size;
+
+ while (fw_size >= sizeof(*cmd)) {
+ const u8 *cmd_param;
+
+ cmd = (struct hci_command_hdr *)fw_ptr;
+ fw_ptr += sizeof(*cmd);
+ fw_size -= sizeof(*cmd);
+
+ if (fw_size < cmd->plen) {
+ BT_ERR("%s: BCM: Patch is corrupted", hdev->name);
+ err = -EINVAL;
+ goto done;
+ }
+
+ cmd_param = fw_ptr;
+ fw_ptr += cmd->plen;
+ fw_size -= cmd->plen;
+
+ opcode = le16_to_cpu(cmd->opcode);
+
+ skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: BCM: Patch command %04x failed (%d)",
+ hdev->name, opcode, err);
+ goto done;
+ }
+ kfree_skb(skb);
+ }
+
+ /* 250 msec delay after Launch Ram completes */
+ msleep(250);
+
+done:
+ return err;
+}
+EXPORT_SYMBOL(btbcm_patchram);
+
+static int btbcm_reset(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ int err = PTR_ERR(skb);
+ BT_ERR("%s: BCM: Reset failed (%d)", hdev->name, err);
+ return err;
+ }
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s: BCM: Reading local name failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return skb;
+ }
+
+ if (skb->len != sizeof(struct hci_rp_read_local_name)) {
+ BT_ERR("%s: BCM: Local name length mismatch", hdev->name);
+ kfree_skb(skb);
+ return ERR_PTR(-EIO);
+ }
+
+ return skb;
+}
+
+static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s: BCM: Reading local version info failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return skb;
+ }
+
+ if (skb->len != sizeof(struct hci_rp_read_local_version)) {
+ BT_ERR("%s: BCM: Local version length mismatch", hdev->name);
+ kfree_skb(skb);
+ return ERR_PTR(-EIO);
+ }
+
+ return skb;
+}
+
+static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+
+ skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s: BCM: Read verbose config info failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return skb;
+ }
+
+ if (skb->len != 7) {
+ BT_ERR("%s: BCM: Verbose config length mismatch", hdev->name);
+ kfree_skb(skb);
+ return ERR_PTR(-EIO);
+ }
+
+ return skb;
+}
+
+static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+
+ skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s: BCM: Read USB product info failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return skb;
+ }
+
+ if (skb->len != 5) {
+ BT_ERR("%s: BCM: USB product length mismatch", hdev->name);
+ kfree_skb(skb);
+ return ERR_PTR(-EIO);
+ }
+
+ return skb;
+}
+
+static const struct {
+ u16 subver;
+ const char *name;
+} bcm_uart_subver_table[] = {
+ { 0x4103, "BCM4330B1" }, /* 002.001.003 */
+ { 0x410e, "BCM43341B0" }, /* 002.001.014 */
+ { 0x4406, "BCM4324B3" }, /* 002.004.006 */
+ { 0x610c, "BCM4354" }, /* 003.001.012 */
+ { }
+};
+
+int btbcm_initialize(struct hci_dev *hdev, char *fw_name, size_t len)
+{
+ u16 subver, rev;
+ const char *hw_name = NULL;
+ struct sk_buff *skb;
+ struct hci_rp_read_local_version *ver;
+ int i, err;
+
+ /* Reset */
+ err = btbcm_reset(hdev);
+ if (err)
+ return err;
+
+ /* Read Local Version Info */
+ skb = btbcm_read_local_version(hdev);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ ver = (struct hci_rp_read_local_version *)skb->data;
+ rev = le16_to_cpu(ver->hci_rev);
+ subver = le16_to_cpu(ver->lmp_subver);
+ kfree_skb(skb);
+
+ /* Read Verbose Config Version Info */
+ skb = btbcm_read_verbose_config(hdev);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
+ kfree_skb(skb);
+
+ switch ((rev & 0xf000) >> 12) {
+ case 0:
+ case 1:
+ case 3:
+ for (i = 0; bcm_uart_subver_table[i].name; i++) {
+ if (subver == bcm_uart_subver_table[i].subver) {
+ hw_name = bcm_uart_subver_table[i].name;
+ break;
+ }
+ }
+
+ snprintf(fw_name, len, "brcm/%s.hcd", hw_name ? : "BCM");
+ break;
+ default:
+ return 0;
+ }
+
+ BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
+ hw_name ? : "BCM", (subver & 0xe000) >> 13,
+ (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btbcm_initialize);
+
+int btbcm_finalize(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ struct hci_rp_read_local_version *ver;
+ u16 subver, rev;
+ int err;
+
+ /* Reset */
+ err = btbcm_reset(hdev);
+ if (err)
+ return err;
+
+ /* Read Local Version Info */
+ skb = btbcm_read_local_version(hdev);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ ver = (struct hci_rp_read_local_version *)skb->data;
+ rev = le16_to_cpu(ver->hci_rev);
+ subver = le16_to_cpu(ver->lmp_subver);
+ kfree_skb(skb);
+
+ BT_INFO("%s: BCM (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
+ (subver & 0xe000) >> 13, (subver & 0x1f00) >> 8,
+ (subver & 0x00ff), rev & 0x0fff);
+
+ btbcm_check_bdaddr(hdev);
+
+ set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btbcm_finalize);
+
+static const struct {
+ u16 subver;
+ const char *name;
+} bcm_usb_subver_table[] = {
+ { 0x210b, "BCM43142A0" }, /* 001.001.011 */
+ { 0x2112, "BCM4314A0" }, /* 001.001.018 */
+ { 0x2118, "BCM20702A0" }, /* 001.001.024 */
+ { 0x2126, "BCM4335A0" }, /* 001.001.038 */
+ { 0x220e, "BCM20702A1" }, /* 001.002.014 */
+ { 0x230f, "BCM4354A2" }, /* 001.003.015 */
+ { 0x4106, "BCM4335B0" }, /* 002.001.006 */
+ { 0x410e, "BCM20702B0" }, /* 002.001.014 */
+ { 0x6109, "BCM4335C0" }, /* 003.001.009 */
+ { 0x610c, "BCM4354" }, /* 003.001.012 */
+ { }
+};
+
+int btbcm_setup_patchram(struct hci_dev *hdev)
+{
+ char fw_name[64];
+ const struct firmware *fw;
+ u16 subver, rev, pid, vid;
+ const char *hw_name = NULL;
+ struct sk_buff *skb;
+ struct hci_rp_read_local_version *ver;
+ int i, err;
+
+ /* Reset */
+ err = btbcm_reset(hdev);
+ if (err)
+ return err;
+
+ /* Read Local Version Info */
+ skb = btbcm_read_local_version(hdev);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ ver = (struct hci_rp_read_local_version *)skb->data;
+ rev = le16_to_cpu(ver->hci_rev);
+ subver = le16_to_cpu(ver->lmp_subver);
+ kfree_skb(skb);
+
+ /* Read Verbose Config Version Info */
+ skb = btbcm_read_verbose_config(hdev);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
+ kfree_skb(skb);
+
+ /* Read Local Name */
+ skb = btbcm_read_local_name(hdev);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
+ kfree_skb(skb);
+
+ switch ((rev & 0xf000) >> 12) {
+ case 0:
+ case 3:
+ for (i = 0; bcm_uart_subver_table[i].name; i++) {
+ if (subver == bcm_uart_subver_table[i].subver) {
+ hw_name = bcm_uart_subver_table[i].name;
+ break;
+ }
+ }
+
+ snprintf(fw_name, sizeof(fw_name), "brcm/%s.hcd",
+ hw_name ? : "BCM");
+ break;
+ case 1:
+ case 2:
+ /* Read USB Product Info */
+ skb = btbcm_read_usb_product(hdev);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ vid = get_unaligned_le16(skb->data + 1);
+ pid = get_unaligned_le16(skb->data + 3);
+ kfree_skb(skb);
+
+ for (i = 0; bcm_usb_subver_table[i].name; i++) {
+ if (subver == bcm_usb_subver_table[i].subver) {
+ hw_name = bcm_usb_subver_table[i].name;
+ break;
+ }
+ }
+
+ snprintf(fw_name, sizeof(fw_name), "brcm/%s-%4.4x-%4.4x.hcd",
+ hw_name ? : "BCM", vid, pid);
+ break;
+ default:
+ return 0;
+ }
+
+ BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
+ hw_name ? : "BCM", (subver & 0xe000) >> 13,
+ (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
+
+ err = request_firmware(&fw, fw_name, &hdev->dev);
+ if (err < 0) {
+ BT_INFO("%s: BCM: Patch %s not found", hdev->name, fw_name);
+ return 0;
+ }
+
+ btbcm_patchram(hdev, fw);
+
+ release_firmware(fw);
+
+ /* Reset */
+ err = btbcm_reset(hdev);
+ if (err)
+ return err;
+
+ /* Read Local Version Info */
+ skb = btbcm_read_local_version(hdev);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ ver = (struct hci_rp_read_local_version *)skb->data;
+ rev = le16_to_cpu(ver->hci_rev);
+ subver = le16_to_cpu(ver->lmp_subver);
+ kfree_skb(skb);
+
+ BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
+ hw_name ? : "BCM", (subver & 0xe000) >> 13,
+ (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
+
+ /* Read Local Name */
+ skb = btbcm_read_local_name(hdev);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
+ kfree_skb(skb);
+
+ btbcm_check_bdaddr(hdev);
+
+ set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
+
+int btbcm_setup_apple(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ int err;
+
+ /* Reset */
+ err = btbcm_reset(hdev);
+ if (err)
+ return err;
+
+ /* Read Verbose Config Version Info */
+ skb = btbcm_read_verbose_config(hdev);
+ if (!IS_ERR(skb)) {
+ BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name,
+ skb->data[1], get_unaligned_le16(skb->data + 5));
+ kfree_skb(skb);
+ }
+
+ /* Read USB Product Info */
+ skb = btbcm_read_usb_product(hdev);
+ if (!IS_ERR(skb)) {
+ BT_INFO("%s: BCM: product %4.4x:%4.4x", hdev->name,
+ get_unaligned_le16(skb->data + 1),
+ get_unaligned_le16(skb->data + 3));
+ kfree_skb(skb);
+ }
+
+ /* Read Local Name */
+ skb = btbcm_read_local_name(hdev);
+ if (!IS_ERR(skb)) {
+ BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
+ kfree_skb(skb);
+ }
+
+ set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btbcm_setup_apple);
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
diff --git a/drivers/bluetooth/btbcm.h b/drivers/bluetooth/btbcm.h
new file mode 100644
index 0000000..d9e6b41
--- /dev/null
+++ b/drivers/bluetooth/btbcm.h
@@ -0,0 +1,117 @@
+/*
+ *
+ * Bluetooth support for Broadcom devices
+ *
+ * Copyright (C) 2015 Intel Corporation
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#define BCM_UART_CLOCK_48MHZ 0x01
+#define BCM_UART_CLOCK_24MHZ 0x02
+
+struct bcm_update_uart_baud_rate {
+ __le16 zero;
+ __le32 baud_rate;
+} __packed;
+
+struct bcm_write_uart_clock_setting {
+ __u8 type;
+} __packed;
+
+struct bcm_set_sleep_mode {
+ __u8 sleep_mode;
+ __u8 idle_host;
+ __u8 idle_dev;
+ __u8 bt_wake_active;
+ __u8 host_wake_active;
+ __u8 allow_host_sleep;
+ __u8 combine_modes;
+ __u8 tristate_control;
+ __u8 usb_auto_sleep;
+ __u8 usb_resume_timeout;
+ __u8 pulsed_host_wake;
+ __u8 break_to_host;
+} __packed;
+
+struct bcm_set_pcm_int_params {
+ __u8 routing;
+ __u8 rate;
+ __u8 frame_sync;
+ __u8 sync_mode;
+ __u8 clock_mode;
+} __packed;
+
+struct bcm_set_pcm_format_params {
+ __u8 lsb_first;
+ __u8 fill_value;
+ __u8 fill_method;
+ __u8 fill_num;
+ __u8 right_justify;
+} __packed;
+
+#if IS_ENABLED(CONFIG_BT_BCM)
+
+int btbcm_check_bdaddr(struct hci_dev *hdev);
+int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
+int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw);
+
+int btbcm_setup_patchram(struct hci_dev *hdev);
+int btbcm_setup_apple(struct hci_dev *hdev);
+
+int btbcm_initialize(struct hci_dev *hdev, char *fw_name, size_t len);
+int btbcm_finalize(struct hci_dev *hdev);
+
+#else
+
+static inline int btbcm_check_bdaddr(struct hci_dev *hdev)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int btbcm_setup_patchram(struct hci_dev *hdev)
+{
+ return 0;
+}
+
+static inline int btbcm_setup_apple(struct hci_dev *hdev)
+{
+ return 0;
+}
+
+static inline int btbcm_initialize(struct hci_dev *hdev, char *fw_name,
+ size_t len)
+{
+ return 0;
+}
+
+static inline int btbcm_finalize(struct hci_dev *hdev)
+{
+ return 0;
+}
+
+#endif
diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
new file mode 100644
index 0000000..1f13e61
--- /dev/null
+++ b/drivers/bluetooth/btintel.c
@@ -0,0 +1,546 @@
+/*
+ *
+ * Bluetooth support for Intel devices
+ *
+ * Copyright (C) 2015 Intel Corporation
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/firmware.h>
+#include <linux/regmap.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btintel.h"
+
+#define VERSION "0.1"
+
+#define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
+
+int btintel_check_bdaddr(struct hci_dev *hdev)
+{
+ struct hci_rp_read_bd_addr *bda;
+ struct sk_buff *skb;
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ int err = PTR_ERR(skb);
+ BT_ERR("%s: Reading Intel device address failed (%d)",
+ hdev->name, err);
+ return err;
+ }
+
+ if (skb->len != sizeof(*bda)) {
+ BT_ERR("%s: Intel device address length mismatch", hdev->name);
+ kfree_skb(skb);
+ return -EIO;
+ }
+
+ bda = (struct hci_rp_read_bd_addr *)skb->data;
+
+ /* For some Intel based controllers, the default Bluetooth device
+ * address 00:03:19:9E:8B:00 can be found. These controllers are
+ * fully operational, but have the danger of duplicate addresses
+ * and that in turn can cause problems with Bluetooth operation.
+ */
+ if (!bacmp(&bda->bdaddr, BDADDR_INTEL)) {
+ BT_ERR("%s: Found Intel default device address (%pMR)",
+ hdev->name, &bda->bdaddr);
+ set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
+ }
+
+ kfree_skb(skb);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_check_bdaddr);
+
+int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+ struct sk_buff *skb;
+ int err;
+
+ skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: Changing Intel device address failed (%d)",
+ hdev->name, err);
+ return err;
+ }
+ kfree_skb(skb);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_set_bdaddr);
+
+int btintel_set_diag(struct hci_dev *hdev, bool enable)
+{
+ struct sk_buff *skb;
+ u8 param[3];
+ int err;
+
+ if (enable) {
+ param[0] = 0x03;
+ param[1] = 0x03;
+ param[2] = 0x03;
+ } else {
+ param[0] = 0x00;
+ param[1] = 0x00;
+ param[2] = 0x00;
+ }
+
+ skb = __hci_cmd_sync(hdev, 0xfc43, 3, param, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ if (err == -ENODATA)
+ goto done;
+ BT_ERR("%s: Changing Intel diagnostic mode failed (%d)",
+ hdev->name, err);
+ return err;
+ }
+ kfree_skb(skb);
+
+done:
+ btintel_set_event_mask(hdev, enable);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_set_diag);
+
+int btintel_set_diag_mfg(struct hci_dev *hdev, bool enable)
+{
+ struct sk_buff *skb;
+ u8 param[2];
+ int err;
+
+ param[0] = 0x01;
+ param[1] = 0x00;
+
+ skb = __hci_cmd_sync(hdev, 0xfc11, 2, param, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: Entering Intel manufacturer mode failed (%d)",
+ hdev->name, err);
+ return PTR_ERR(skb);
+ }
+ kfree_skb(skb);
+
+ err = btintel_set_diag(hdev, enable);
+
+ param[0] = 0x00;
+ param[1] = 0x00;
+
+ skb = __hci_cmd_sync(hdev, 0xfc11, 2, param, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: Leaving Intel manufacturer mode failed (%d)",
+ hdev->name, err);
+ return PTR_ERR(skb);
+ }
+ kfree_skb(skb);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(btintel_set_diag_mfg);
+
+void btintel_hw_error(struct hci_dev *hdev, u8 code)
+{
+ struct sk_buff *skb;
+ u8 type = 0x00;
+
+ BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s: Reset after hardware error failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return;
+ }
+ kfree_skb(skb);
+
+ skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return;
+ }
+
+ if (skb->len != 13) {
+ BT_ERR("%s: Exception info size mismatch", hdev->name);
+ kfree_skb(skb);
+ return;
+ }
+
+ BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
+
+ kfree_skb(skb);
+}
+EXPORT_SYMBOL_GPL(btintel_hw_error);
+
+void btintel_version_info(struct hci_dev *hdev, struct intel_version *ver)
+{
+ const char *variant;
+
+ switch (ver->fw_variant) {
+ case 0x06:
+ variant = "Bootloader";
+ break;
+ case 0x23:
+ variant = "Firmware";
+ break;
+ default:
+ return;
+ }
+
+ BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
+ variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
+ ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
+}
+EXPORT_SYMBOL_GPL(btintel_version_info);
+
+int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type, u32 plen,
+ const void *param)
+{
+ while (plen > 0) {
+ struct sk_buff *skb;
+ u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
+
+ cmd_param[0] = fragment_type;
+ memcpy(cmd_param + 1, param, fragment_len);
+
+ skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
+ cmd_param, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ kfree_skb(skb);
+
+ plen -= fragment_len;
+ param += fragment_len;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_secure_send);
+
+int btintel_load_ddc_config(struct hci_dev *hdev, const char *ddc_name)
+{
+ const struct firmware *fw;
+ struct sk_buff *skb;
+ const u8 *fw_ptr;
+ int err;
+
+ err = request_firmware_direct(&fw, ddc_name, &hdev->dev);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to load Intel DDC file %s (%d)",
+ ddc_name, err);
+ return err;
+ }
+
+ bt_dev_info(hdev, "Found Intel DDC parameters: %s", ddc_name);
+
+ fw_ptr = fw->data;
+
+ /* DDC file contains one or more DDC structure which has
+ * Length (1 byte), DDC ID (2 bytes), and DDC value (Length - 2).
+ */
+ while (fw->size > fw_ptr - fw->data) {
+ u8 cmd_plen = fw_ptr[0] + sizeof(u8);
+
+ skb = __hci_cmd_sync(hdev, 0xfc8b, cmd_plen, fw_ptr,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Failed to send Intel_Write_DDC (%ld)",
+ PTR_ERR(skb));
+ release_firmware(fw);
+ return PTR_ERR(skb);
+ }
+
+ fw_ptr += cmd_plen;
+ kfree_skb(skb);
+ }
+
+ release_firmware(fw);
+
+ bt_dev_info(hdev, "Applying Intel DDC parameters completed");
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_load_ddc_config);
+
+int btintel_set_event_mask(struct hci_dev *hdev, bool debug)
+{
+ u8 mask[8] = { 0x87, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+ struct sk_buff *skb;
+ int err;
+
+ if (debug)
+ mask[1] |= 0x62;
+
+ skb = __hci_cmd_sync(hdev, 0xfc52, 8, mask, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: Setting Intel event mask failed (%d)",
+ hdev->name, err);
+ return err;
+ }
+ kfree_skb(skb);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_set_event_mask);
+
+int btintel_set_event_mask_mfg(struct hci_dev *hdev, bool debug)
+{
+ struct sk_buff *skb;
+ u8 param[2];
+ int err;
+
+ param[0] = 0x01;
+ param[1] = 0x00;
+
+ skb = __hci_cmd_sync(hdev, 0xfc11, 2, param, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: Entering Intel manufacturer mode failed (%d)",
+ hdev->name, err);
+ return PTR_ERR(skb);
+ }
+ kfree_skb(skb);
+
+ err = btintel_set_event_mask(hdev, debug);
+
+ param[0] = 0x00;
+ param[1] = 0x00;
+
+ skb = __hci_cmd_sync(hdev, 0xfc11, 2, param, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: Leaving Intel manufacturer mode failed (%d)",
+ hdev->name, err);
+ return PTR_ERR(skb);
+ }
+ kfree_skb(skb);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(btintel_set_event_mask_mfg);
+
+/* ------- REGMAP IBT SUPPORT ------- */
+
+#define IBT_REG_MODE_8BIT 0x00
+#define IBT_REG_MODE_16BIT 0x01
+#define IBT_REG_MODE_32BIT 0x02
+
+struct regmap_ibt_context {
+ struct hci_dev *hdev;
+ __u16 op_write;
+ __u16 op_read;
+};
+
+struct ibt_cp_reg_access {
+ __le32 addr;
+ __u8 mode;
+ __u8 len;
+ __u8 data[0];
+} __packed;
+
+struct ibt_rp_reg_access {
+ __u8 status;
+ __le32 addr;
+ __u8 data[0];
+} __packed;
+
+static int regmap_ibt_read(void *context, const void *addr, size_t reg_size,
+ void *val, size_t val_size)
+{
+ struct regmap_ibt_context *ctx = context;
+ struct ibt_cp_reg_access cp;
+ struct ibt_rp_reg_access *rp;
+ struct sk_buff *skb;
+ int err = 0;
+
+ if (reg_size != sizeof(__le32))
+ return -EINVAL;
+
+ switch (val_size) {
+ case 1:
+ cp.mode = IBT_REG_MODE_8BIT;
+ break;
+ case 2:
+ cp.mode = IBT_REG_MODE_16BIT;
+ break;
+ case 4:
+ cp.mode = IBT_REG_MODE_32BIT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* regmap provides a little-endian formatted addr */
+ cp.addr = *(__le32 *)addr;
+ cp.len = val_size;
+
+ bt_dev_dbg(ctx->hdev, "Register (0x%x) read", le32_to_cpu(cp.addr));
+
+ skb = hci_cmd_sync(ctx->hdev, ctx->op_read, sizeof(cp), &cp,
+ HCI_CMD_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ bt_dev_err(ctx->hdev, "regmap: Register (0x%x) read error (%d)",
+ le32_to_cpu(cp.addr), err);
+ return err;
+ }
+
+ if (skb->len != sizeof(*rp) + val_size) {
+ bt_dev_err(ctx->hdev, "regmap: Register (0x%x) read error, bad len",
+ le32_to_cpu(cp.addr));
+ err = -EINVAL;
+ goto done;
+ }
+
+ rp = (struct ibt_rp_reg_access *)skb->data;
+
+ if (rp->addr != cp.addr) {
+ bt_dev_err(ctx->hdev, "regmap: Register (0x%x) read error, bad addr",
+ le32_to_cpu(rp->addr));
+ err = -EINVAL;
+ goto done;
+ }
+
+ memcpy(val, rp->data, val_size);
+
+done:
+ kfree_skb(skb);
+ return err;
+}
+
+static int regmap_ibt_gather_write(void *context,
+ const void *addr, size_t reg_size,
+ const void *val, size_t val_size)
+{
+ struct regmap_ibt_context *ctx = context;
+ struct ibt_cp_reg_access *cp;
+ struct sk_buff *skb;
+ int plen = sizeof(*cp) + val_size;
+ u8 mode;
+ int err = 0;
+
+ if (reg_size != sizeof(__le32))
+ return -EINVAL;
+
+ switch (val_size) {
+ case 1:
+ mode = IBT_REG_MODE_8BIT;
+ break;
+ case 2:
+ mode = IBT_REG_MODE_16BIT;
+ break;
+ case 4:
+ mode = IBT_REG_MODE_32BIT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ cp = kmalloc(plen, GFP_KERNEL);
+ if (!cp)
+ return -ENOMEM;
+
+ /* regmap provides a little-endian formatted addr/value */
+ cp->addr = *(__le32 *)addr;
+ cp->mode = mode;
+ cp->len = val_size;
+ memcpy(&cp->data, val, val_size);
+
+ bt_dev_dbg(ctx->hdev, "Register (0x%x) write", le32_to_cpu(cp->addr));
+
+ skb = hci_cmd_sync(ctx->hdev, ctx->op_write, plen, cp, HCI_CMD_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ bt_dev_err(ctx->hdev, "regmap: Register (0x%x) write error (%d)",
+ le32_to_cpu(cp->addr), err);
+ goto done;
+ }
+ kfree_skb(skb);
+
+done:
+ kfree(cp);
+ return err;
+}
+
+static int regmap_ibt_write(void *context, const void *data, size_t count)
+{
+ /* data contains register+value, since we only support 32bit addr,
+ * minimum data size is 4 bytes.
+ */
+ if (WARN_ONCE(count < 4, "Invalid register access"))
+ return -EINVAL;
+
+ return regmap_ibt_gather_write(context, data, 4, data + 4, count - 4);
+}
+
+static void regmap_ibt_free_context(void *context)
+{
+ kfree(context);
+}
+
+static struct regmap_bus regmap_ibt = {
+ .read = regmap_ibt_read,
+ .write = regmap_ibt_write,
+ .gather_write = regmap_ibt_gather_write,
+ .free_context = regmap_ibt_free_context,
+ .reg_format_endian_default = REGMAP_ENDIAN_LITTLE,
+ .val_format_endian_default = REGMAP_ENDIAN_LITTLE,
+};
+
+/* Config is the same for all register regions */
+static const struct regmap_config regmap_ibt_cfg = {
+ .name = "btintel_regmap",
+ .reg_bits = 32,
+ .val_bits = 32,
+};
+
+struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read,
+ u16 opcode_write)
+{
+ struct regmap_ibt_context *ctx;
+
+ bt_dev_info(hdev, "regmap: Init R%x-W%x region", opcode_read,
+ opcode_write);
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return ERR_PTR(-ENOMEM);
+
+ ctx->op_read = opcode_read;
+ ctx->op_write = opcode_write;
+ ctx->hdev = hdev;
+
+ return regmap_init(&hdev->dev, ®map_ibt, ctx, ®map_ibt_cfg);
+}
+EXPORT_SYMBOL_GPL(btintel_regmap_init);
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("intel/ibt-11-5.sfi");
+MODULE_FIRMWARE("intel/ibt-11-5.ddc");
diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h
new file mode 100644
index 0000000..07e58e0
--- /dev/null
+++ b/drivers/bluetooth/btintel.h
@@ -0,0 +1,149 @@
+/*
+ *
+ * Bluetooth support for Intel devices
+ *
+ * Copyright (C) 2015 Intel Corporation
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+struct intel_version {
+ u8 status;
+ u8 hw_platform;
+ u8 hw_variant;
+ u8 hw_revision;
+ u8 fw_variant;
+ u8 fw_revision;
+ u8 fw_build_num;
+ u8 fw_build_ww;
+ u8 fw_build_yy;
+ u8 fw_patch_num;
+} __packed;
+
+struct intel_boot_params {
+ __u8 status;
+ __u8 otp_format;
+ __u8 otp_content;
+ __u8 otp_patch;
+ __le16 dev_revid;
+ __u8 secure_boot;
+ __u8 key_from_hdr;
+ __u8 key_type;
+ __u8 otp_lock;
+ __u8 api_lock;
+ __u8 debug_lock;
+ bdaddr_t otp_bdaddr;
+ __u8 min_fw_build_nn;
+ __u8 min_fw_build_cw;
+ __u8 min_fw_build_yy;
+ __u8 limited_cce;
+ __u8 unlocked_state;
+} __packed;
+
+struct intel_bootup {
+ __u8 zero;
+ __u8 num_cmds;
+ __u8 source;
+ __u8 reset_type;
+ __u8 reset_reason;
+ __u8 ddc_status;
+} __packed;
+
+struct intel_secure_send_result {
+ __u8 result;
+ __le16 opcode;
+ __u8 status;
+} __packed;
+
+#if IS_ENABLED(CONFIG_BT_INTEL)
+
+int btintel_check_bdaddr(struct hci_dev *hdev);
+int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
+int btintel_set_diag(struct hci_dev *hdev, bool enable);
+int btintel_set_diag_mfg(struct hci_dev *hdev, bool enable);
+void btintel_hw_error(struct hci_dev *hdev, u8 code);
+
+void btintel_version_info(struct hci_dev *hdev, struct intel_version *ver);
+int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type, u32 plen,
+ const void *param);
+int btintel_load_ddc_config(struct hci_dev *hdev, const char *ddc_name);
+int btintel_set_event_mask(struct hci_dev *hdev, bool debug);
+int btintel_set_event_mask_mfg(struct hci_dev *hdev, bool debug);
+
+struct regmap *btintel_regmap_init(struct hci_dev *hdev, u16 opcode_read,
+ u16 opcode_write);
+
+#else
+
+static inline int btintel_check_bdaddr(struct hci_dev *hdev)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int btintel_set_diag(struct hci_dev *hdev, bool enable)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int btintel_set_diag_mfg(struct hci_dev *hdev, bool enable)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline void btintel_hw_error(struct hci_dev *hdev, u8 code)
+{
+}
+
+static inline void btintel_version_info(struct hci_dev *hdev,
+ struct intel_version *ver)
+{
+}
+
+static inline int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type,
+ u32 plen, const void *param)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int btintel_load_ddc_config(struct hci_dev *hdev,
+ const char *ddc_name)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int btintel_set_event_mask(struct hci_dev *hdev, bool debug)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int btintel_set_event_mask_mfg(struct hci_dev *hdev, bool debug)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline struct regmap *btintel_regmap_init(struct hci_dev *hdev,
+ u16 opcode_read,
+ u16 opcode_write)
+{
+ return ERR_PTR(-EINVAL);
+}
+#endif
diff --git a/drivers/bluetooth/btmrvl_debugfs.c b/drivers/bluetooth/btmrvl_debugfs.c
new file mode 100644
index 0000000..1828ed8
--- /dev/null
+++ b/drivers/bluetooth/btmrvl_debugfs.c
@@ -0,0 +1,255 @@
+/**
+ * Marvell Bluetooth driver: debugfs related functions
+ *
+ * Copyright (C) 2009, Marvell International Ltd.
+ *
+ * This software file (the "File") is distributed by Marvell International
+ * Ltd. under the terms of the GNU General Public License Version 2, June 1991
+ * (the "License"). You may use, redistribute and/or modify this File in
+ * accordance with the terms and conditions of the License, a copy of which
+ * is available by writing to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
+ * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
+ *
+ *
+ * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
+ * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
+ * this warranty disclaimer.
+ **/
+
+#include <linux/debugfs.h>
+#include <linux/slab.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btmrvl_drv.h"
+
+struct btmrvl_debugfs_data {
+ struct dentry *config_dir;
+ struct dentry *status_dir;
+};
+
+static ssize_t btmrvl_hscfgcmd_write(struct file *file,
+ const char __user *ubuf, size_t count, loff_t *ppos)
+{
+ struct btmrvl_private *priv = file->private_data;
+ char buf[16];
+ long result, ret;
+
+ memset(buf, 0, sizeof(buf));
+
+ if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
+
+ ret = kstrtol(buf, 10, &result);
+ if (ret)
+ return ret;
+
+ priv->btmrvl_dev.hscfgcmd = result;
+
+ if (priv->btmrvl_dev.hscfgcmd) {
+ btmrvl_prepare_command(priv);
+ wake_up_interruptible(&priv->main_thread.wait_q);
+ }
+
+ return count;
+}
+
+static ssize_t btmrvl_hscfgcmd_read(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ struct btmrvl_private *priv = file->private_data;
+ char buf[16];
+ int ret;
+
+ ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
+ priv->btmrvl_dev.hscfgcmd);
+
+ return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
+}
+
+static const struct file_operations btmrvl_hscfgcmd_fops = {
+ .read = btmrvl_hscfgcmd_read,
+ .write = btmrvl_hscfgcmd_write,
+ .open = simple_open,
+ .llseek = default_llseek,
+};
+
+static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
+ size_t count, loff_t *ppos)
+{
+ struct btmrvl_private *priv = file->private_data;
+ char buf[16];
+ long result, ret;
+
+ memset(buf, 0, sizeof(buf));
+
+ if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
+
+ ret = kstrtol(buf, 10, &result);
+ if (ret)
+ return ret;
+
+ priv->btmrvl_dev.pscmd = result;
+
+ if (priv->btmrvl_dev.pscmd) {
+ btmrvl_prepare_command(priv);
+ wake_up_interruptible(&priv->main_thread.wait_q);
+ }
+
+ return count;
+
+}
+
+static ssize_t btmrvl_pscmd_read(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ struct btmrvl_private *priv = file->private_data;
+ char buf[16];
+ int ret;
+
+ ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.pscmd);
+
+ return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
+}
+
+static const struct file_operations btmrvl_pscmd_fops = {
+ .read = btmrvl_pscmd_read,
+ .write = btmrvl_pscmd_write,
+ .open = simple_open,
+ .llseek = default_llseek,
+};
+
+static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
+ size_t count, loff_t *ppos)
+{
+ struct btmrvl_private *priv = file->private_data;
+ char buf[16];
+ long result, ret;
+
+ memset(buf, 0, sizeof(buf));
+
+ if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
+
+ ret = kstrtol(buf, 10, &result);
+ if (ret)
+ return ret;
+
+ priv->btmrvl_dev.hscmd = result;
+ if (priv->btmrvl_dev.hscmd) {
+ btmrvl_prepare_command(priv);
+ wake_up_interruptible(&priv->main_thread.wait_q);
+ }
+
+ return count;
+}
+
+static ssize_t btmrvl_hscmd_read(struct file *file, char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ struct btmrvl_private *priv = file->private_data;
+ char buf[16];
+ int ret;
+
+ ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);
+
+ return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
+}
+
+static const struct file_operations btmrvl_hscmd_fops = {
+ .read = btmrvl_hscmd_read,
+ .write = btmrvl_hscmd_write,
+ .open = simple_open,
+ .llseek = default_llseek,
+};
+
+static ssize_t btmrvl_fwdump_write(struct file *file, const char __user *ubuf,
+ size_t count, loff_t *ppos)
+{
+ struct btmrvl_private *priv = file->private_data;
+ char buf[16];
+ bool result;
+
+ memset(buf, 0, sizeof(buf));
+
+ if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
+
+ if (strtobool(buf, &result))
+ return -EINVAL;
+
+ if (!result)
+ return -EINVAL;
+
+ btmrvl_firmware_dump(priv);
+
+ return count;
+}
+
+static const struct file_operations btmrvl_fwdump_fops = {
+ .write = btmrvl_fwdump_write,
+ .open = simple_open,
+ .llseek = default_llseek,
+};
+
+void btmrvl_debugfs_init(struct hci_dev *hdev)
+{
+ struct btmrvl_private *priv = hci_get_drvdata(hdev);
+ struct btmrvl_debugfs_data *dbg;
+
+ if (!hdev->debugfs)
+ return;
+
+ dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
+ priv->debugfs_data = dbg;
+
+ if (!dbg) {
+ BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
+ return;
+ }
+
+ dbg->config_dir = debugfs_create_dir("config", hdev->debugfs);
+
+ debugfs_create_u8("psmode", 0644, dbg->config_dir,
+ &priv->btmrvl_dev.psmode);
+ debugfs_create_file("pscmd", 0644, dbg->config_dir,
+ priv, &btmrvl_pscmd_fops);
+ debugfs_create_x16("gpiogap", 0644, dbg->config_dir,
+ &priv->btmrvl_dev.gpio_gap);
+ debugfs_create_u8("hsmode", 0644, dbg->config_dir,
+ &priv->btmrvl_dev.hsmode);
+ debugfs_create_file("hscmd", 0644, dbg->config_dir,
+ priv, &btmrvl_hscmd_fops);
+ debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
+ priv, &btmrvl_hscfgcmd_fops);
+ debugfs_create_file("fw_dump", 0200, dbg->config_dir,
+ priv, &btmrvl_fwdump_fops);
+
+ dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
+ debugfs_create_u8("curpsmode", 0444, dbg->status_dir,
+ &priv->adapter->psmode);
+ debugfs_create_u8("psstate", 0444, dbg->status_dir,
+ &priv->adapter->ps_state);
+ debugfs_create_u8("hsstate", 0444, dbg->status_dir,
+ &priv->adapter->hs_state);
+ debugfs_create_u8("txdnldready", 0444, dbg->status_dir,
+ &priv->btmrvl_dev.tx_dnld_rdy);
+}
+
+void btmrvl_debugfs_remove(struct hci_dev *hdev)
+{
+ struct btmrvl_private *priv = hci_get_drvdata(hdev);
+ struct btmrvl_debugfs_data *dbg = priv->debugfs_data;
+
+ if (!dbg)
+ return;
+
+ debugfs_remove_recursive(dbg->config_dir);
+ debugfs_remove_recursive(dbg->status_dir);
+
+ kfree(dbg);
+}
diff --git a/drivers/bluetooth/btmrvl_drv.h b/drivers/bluetooth/btmrvl_drv.h
new file mode 100644
index 0000000..27a9aac
--- /dev/null
+++ b/drivers/bluetooth/btmrvl_drv.h
@@ -0,0 +1,180 @@
+/*
+ * Marvell Bluetooth driver: global definitions & declarations
+ *
+ * Copyright (C) 2009, Marvell International Ltd.
+ *
+ * This software file (the "File") is distributed by Marvell International
+ * Ltd. under the terms of the GNU General Public License Version 2, June 1991
+ * (the "License"). You may use, redistribute and/or modify this File in
+ * accordance with the terms and conditions of the License, a copy of which
+ * is available by writing to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
+ * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
+ *
+ *
+ * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
+ * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
+ * this warranty disclaimer.
+ *
+ */
+
+#include <linux/kthread.h>
+#include <linux/bitops.h>
+#include <linux/slab.h>
+#include <net/bluetooth/bluetooth.h>
+
+#define BTM_HEADER_LEN 4
+#define BTM_UPLD_SIZE 2312
+
+/* Time to wait until Host Sleep state change in millisecond */
+#define WAIT_UNTIL_HS_STATE_CHANGED msecs_to_jiffies(5000)
+/* Time to wait for command response in millisecond */
+#define WAIT_UNTIL_CMD_RESP msecs_to_jiffies(5000)
+
+enum rdwr_status {
+ RDWR_STATUS_SUCCESS = 0,
+ RDWR_STATUS_FAILURE = 1,
+ RDWR_STATUS_DONE = 2
+};
+
+#define FW_DUMP_MAX_NAME_LEN 8
+#define FW_DUMP_HOST_READY 0xEE
+#define FW_DUMP_DONE 0xFF
+#define FW_DUMP_READ_DONE 0xFE
+
+struct memory_type_mapping {
+ u8 mem_name[FW_DUMP_MAX_NAME_LEN];
+ u8 *mem_ptr;
+ u32 mem_size;
+ u8 done_flag;
+};
+
+struct btmrvl_thread {
+ struct task_struct *task;
+ wait_queue_head_t wait_q;
+ void *priv;
+};
+
+struct btmrvl_device {
+ void *card;
+ struct hci_dev *hcidev;
+
+ u8 dev_type;
+
+ u8 tx_dnld_rdy;
+
+ u8 psmode;
+ u8 pscmd;
+ u8 hsmode;
+ u8 hscmd;
+
+ /* Low byte is gap, high byte is GPIO */
+ u16 gpio_gap;
+
+ u8 hscfgcmd;
+ u8 sendcmdflag;
+};
+
+struct btmrvl_adapter {
+ void *hw_regs_buf;
+ u8 *hw_regs;
+ u32 int_count;
+ struct sk_buff_head tx_queue;
+ u8 psmode;
+ u8 ps_state;
+ u8 hs_state;
+ u8 wakeup_tries;
+ wait_queue_head_t cmd_wait_q;
+ wait_queue_head_t event_hs_wait_q;
+ u8 cmd_complete;
+ bool is_suspended;
+};
+
+struct btmrvl_private {
+ struct btmrvl_device btmrvl_dev;
+ struct btmrvl_adapter *adapter;
+ struct btmrvl_thread main_thread;
+ int (*hw_host_to_card)(struct btmrvl_private *priv,
+ u8 *payload, u16 nb);
+ int (*hw_wakeup_firmware)(struct btmrvl_private *priv);
+ int (*hw_process_int_status)(struct btmrvl_private *priv);
+ void (*firmware_dump)(struct btmrvl_private *priv);
+ spinlock_t driver_lock; /* spinlock used by driver */
+#ifdef CONFIG_DEBUG_FS
+ void *debugfs_data;
+#endif
+ bool surprise_removed;
+};
+
+#define MRVL_VENDOR_PKT 0xFE
+
+/* Vendor specific Bluetooth commands */
+#define BT_CMD_PSCAN_WIN_REPORT_ENABLE 0xFC03
+#define BT_CMD_ROUTE_SCO_TO_HOST 0xFC1D
+#define BT_CMD_SET_BDADDR 0xFC22
+#define BT_CMD_AUTO_SLEEP_MODE 0xFC23
+#define BT_CMD_HOST_SLEEP_CONFIG 0xFC59
+#define BT_CMD_HOST_SLEEP_ENABLE 0xFC5A
+#define BT_CMD_MODULE_CFG_REQ 0xFC5B
+#define BT_CMD_LOAD_CONFIG_DATA 0xFC61
+
+/* Sub-commands: Module Bringup/Shutdown Request/Response */
+#define MODULE_BRINGUP_REQ 0xF1
+#define MODULE_BROUGHT_UP 0x00
+#define MODULE_ALREADY_UP 0x0C
+
+#define MODULE_SHUTDOWN_REQ 0xF2
+
+/* Vendor specific Bluetooth events */
+#define BT_EVENT_AUTO_SLEEP_MODE 0x23
+#define BT_EVENT_HOST_SLEEP_CONFIG 0x59
+#define BT_EVENT_HOST_SLEEP_ENABLE 0x5A
+#define BT_EVENT_MODULE_CFG_REQ 0x5B
+#define BT_EVENT_POWER_STATE 0x20
+
+/* Bluetooth Power States */
+#define BT_PS_ENABLE 0x02
+#define BT_PS_DISABLE 0x03
+#define BT_PS_SLEEP 0x01
+
+/* Host Sleep states */
+#define HS_ACTIVATED 0x01
+#define HS_DEACTIVATED 0x00
+
+/* Power Save modes */
+#define PS_SLEEP 0x01
+#define PS_AWAKE 0x00
+
+#define BT_CAL_HDR_LEN 4
+#define BT_CAL_DATA_SIZE 28
+
+struct btmrvl_event {
+ u8 ec; /* event counter */
+ u8 length;
+ u8 data[4];
+} __packed;
+
+/* Prototype of global function */
+
+int btmrvl_register_hdev(struct btmrvl_private *priv);
+struct btmrvl_private *btmrvl_add_card(void *card);
+int btmrvl_remove_card(struct btmrvl_private *priv);
+
+void btmrvl_interrupt(struct btmrvl_private *priv);
+
+bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb);
+int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb);
+
+int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd);
+int btmrvl_pscan_window_reporting(struct btmrvl_private *priv, u8 subcmd);
+int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv);
+int btmrvl_enable_ps(struct btmrvl_private *priv);
+int btmrvl_prepare_command(struct btmrvl_private *priv);
+int btmrvl_enable_hs(struct btmrvl_private *priv);
+void btmrvl_firmware_dump(struct btmrvl_private *priv);
+
+#ifdef CONFIG_DEBUG_FS
+void btmrvl_debugfs_init(struct hci_dev *hdev);
+void btmrvl_debugfs_remove(struct hci_dev *hdev);
+#endif
diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c
new file mode 100644
index 0000000..6af9173
--- /dev/null
+++ b/drivers/bluetooth/btmrvl_main.c
@@ -0,0 +1,789 @@
+/**
+ * Marvell Bluetooth driver
+ *
+ * Copyright (C) 2009, Marvell International Ltd.
+ *
+ * This software file (the "File") is distributed by Marvell International
+ * Ltd. under the terms of the GNU General Public License Version 2, June 1991
+ * (the "License"). You may use, redistribute and/or modify this File in
+ * accordance with the terms and conditions of the License, a copy of which
+ * is available by writing to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
+ * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
+ *
+ *
+ * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
+ * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
+ * this warranty disclaimer.
+ **/
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include <linux/mmc/sdio_func.h>
+
+#include "btmrvl_drv.h"
+#include "btmrvl_sdio.h"
+
+#define VERSION "1.0"
+
+/*
+ * This function is called by interface specific interrupt handler.
+ * It updates Power Save & Host Sleep states, and wakes up the main
+ * thread.
+ */
+void btmrvl_interrupt(struct btmrvl_private *priv)
+{
+ priv->adapter->ps_state = PS_AWAKE;
+
+ priv->adapter->wakeup_tries = 0;
+
+ priv->adapter->int_count++;
+
+ if (priv->adapter->hs_state == HS_ACTIVATED) {
+ BT_DBG("BT: HS DEACTIVATED in ISR!");
+ priv->adapter->hs_state = HS_DEACTIVATED;
+ }
+
+ wake_up_interruptible(&priv->main_thread.wait_q);
+}
+EXPORT_SYMBOL_GPL(btmrvl_interrupt);
+
+bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
+{
+ struct hci_event_hdr *hdr = (void *) skb->data;
+
+ if (hdr->evt == HCI_EV_CMD_COMPLETE) {
+ struct hci_ev_cmd_complete *ec;
+ u16 opcode;
+
+ ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
+ opcode = __le16_to_cpu(ec->opcode);
+
+ if (priv->btmrvl_dev.sendcmdflag) {
+ priv->btmrvl_dev.sendcmdflag = false;
+ priv->adapter->cmd_complete = true;
+ wake_up_interruptible(&priv->adapter->cmd_wait_q);
+
+ if (hci_opcode_ogf(opcode) == 0x3F) {
+ BT_DBG("vendor event skipped: opcode=%#4.4x",
+ opcode);
+ kfree_skb(skb);
+ return false;
+ }
+ }
+ }
+
+ return true;
+}
+EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
+
+int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
+{
+ struct btmrvl_adapter *adapter = priv->adapter;
+ struct btmrvl_event *event;
+ int ret = 0;
+
+ event = (struct btmrvl_event *) skb->data;
+ if (event->ec != 0xff) {
+ BT_DBG("Not Marvell Event=%x", event->ec);
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ switch (event->data[0]) {
+ case BT_EVENT_AUTO_SLEEP_MODE:
+ if (!event->data[2]) {
+ if (event->data[1] == BT_PS_ENABLE)
+ adapter->psmode = 1;
+ else
+ adapter->psmode = 0;
+ BT_DBG("PS Mode:%s",
+ (adapter->psmode) ? "Enable" : "Disable");
+ } else {
+ BT_DBG("PS Mode command failed");
+ }
+ break;
+
+ case BT_EVENT_HOST_SLEEP_CONFIG:
+ if (!event->data[3])
+ BT_DBG("gpio=%x, gap=%x", event->data[1],
+ event->data[2]);
+ else
+ BT_DBG("HSCFG command failed");
+ break;
+
+ case BT_EVENT_HOST_SLEEP_ENABLE:
+ if (!event->data[1]) {
+ adapter->hs_state = HS_ACTIVATED;
+ if (adapter->psmode)
+ adapter->ps_state = PS_SLEEP;
+ wake_up_interruptible(&adapter->event_hs_wait_q);
+ BT_DBG("HS ACTIVATED!");
+ } else {
+ BT_DBG("HS Enable failed");
+ }
+ break;
+
+ case BT_EVENT_MODULE_CFG_REQ:
+ if (priv->btmrvl_dev.sendcmdflag &&
+ event->data[1] == MODULE_BRINGUP_REQ) {
+ BT_DBG("EVENT:%s",
+ ((event->data[2] == MODULE_BROUGHT_UP) ||
+ (event->data[2] == MODULE_ALREADY_UP)) ?
+ "Bring-up succeed" : "Bring-up failed");
+
+ if (event->length > 3 && event->data[3])
+ priv->btmrvl_dev.dev_type = HCI_AMP;
+ else
+ priv->btmrvl_dev.dev_type = HCI_BREDR;
+
+ BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
+ } else if (priv->btmrvl_dev.sendcmdflag &&
+ event->data[1] == MODULE_SHUTDOWN_REQ) {
+ BT_DBG("EVENT:%s", (event->data[2]) ?
+ "Shutdown failed" : "Shutdown succeed");
+ } else {
+ BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
+ ret = -EINVAL;
+ }
+ break;
+
+ case BT_EVENT_POWER_STATE:
+ if (event->data[1] == BT_PS_SLEEP)
+ adapter->ps_state = PS_SLEEP;
+ BT_DBG("EVENT:%s",
+ (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
+ break;
+
+ default:
+ BT_DBG("Unknown Event=%d", event->data[0]);
+ ret = -EINVAL;
+ break;
+ }
+
+exit:
+ if (!ret)
+ kfree_skb(skb);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(btmrvl_process_event);
+
+static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
+ const void *param, u8 len)
+{
+ struct sk_buff *skb;
+ struct hci_command_hdr *hdr;
+
+ if (priv->surprise_removed) {
+ BT_ERR("Card is removed");
+ return -EFAULT;
+ }
+
+ skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
+ if (!skb) {
+ BT_ERR("No free skb");
+ return -ENOMEM;
+ }
+
+ hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
+ hdr->opcode = cpu_to_le16(opcode);
+ hdr->plen = len;
+
+ if (len)
+ memcpy(skb_put(skb, len), param, len);
+
+ bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
+
+ skb_queue_head(&priv->adapter->tx_queue, skb);
+
+ priv->btmrvl_dev.sendcmdflag = true;
+
+ priv->adapter->cmd_complete = false;
+
+ wake_up_interruptible(&priv->main_thread.wait_q);
+
+ if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
+ priv->adapter->cmd_complete ||
+ priv->surprise_removed,
+ WAIT_UNTIL_CMD_RESP))
+ return -ETIMEDOUT;
+
+ if (priv->surprise_removed)
+ return -EFAULT;
+
+ return 0;
+}
+
+int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd)
+{
+ int ret;
+
+ ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
+ if (ret)
+ BT_ERR("module_cfg_cmd(%x) failed", subcmd);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
+
+static int btmrvl_enable_sco_routing_to_host(struct btmrvl_private *priv)
+{
+ int ret;
+ u8 subcmd = 0;
+
+ ret = btmrvl_send_sync_cmd(priv, BT_CMD_ROUTE_SCO_TO_HOST, &subcmd, 1);
+ if (ret)
+ BT_ERR("BT_CMD_ROUTE_SCO_TO_HOST command failed: %#x", ret);
+
+ return ret;
+}
+
+int btmrvl_pscan_window_reporting(struct btmrvl_private *priv, u8 subcmd)
+{
+ struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
+ int ret;
+
+ if (!card->support_pscan_win_report)
+ return 0;
+
+ ret = btmrvl_send_sync_cmd(priv, BT_CMD_PSCAN_WIN_REPORT_ENABLE,
+ &subcmd, 1);
+ if (ret)
+ BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting);
+
+int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
+{
+ int ret;
+ u8 param[2];
+
+ param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
+ param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
+
+ BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
+ param[0], param[1]);
+
+ ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
+ if (ret)
+ BT_ERR("HSCFG command failed");
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
+
+int btmrvl_enable_ps(struct btmrvl_private *priv)
+{
+ int ret;
+ u8 param;
+
+ if (priv->btmrvl_dev.psmode)
+ param = BT_PS_ENABLE;
+ else
+ param = BT_PS_DISABLE;
+
+ ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, ¶m, 1);
+ if (ret)
+ BT_ERR("PSMODE command failed");
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
+
+int btmrvl_enable_hs(struct btmrvl_private *priv)
+{
+ struct btmrvl_adapter *adapter = priv->adapter;
+ int ret;
+
+ ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
+ if (ret) {
+ BT_ERR("Host sleep enable command failed");
+ return ret;
+ }
+
+ ret = wait_event_interruptible_timeout(adapter->event_hs_wait_q,
+ adapter->hs_state ||
+ priv->surprise_removed,
+ WAIT_UNTIL_HS_STATE_CHANGED);
+ if (ret < 0 || priv->surprise_removed) {
+ BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d",
+ ret, adapter->hs_state, adapter->ps_state,
+ adapter->wakeup_tries);
+ } else if (!ret) {
+ BT_ERR("hs_enable timeout: %d,%d,%d", adapter->hs_state,
+ adapter->ps_state, adapter->wakeup_tries);
+ ret = -ETIMEDOUT;
+ } else {
+ BT_DBG("host sleep enabled: %d,%d,%d", adapter->hs_state,
+ adapter->ps_state, adapter->wakeup_tries);
+ ret = 0;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
+
+int btmrvl_prepare_command(struct btmrvl_private *priv)
+{
+ int ret = 0;
+
+ if (priv->btmrvl_dev.hscfgcmd) {
+ priv->btmrvl_dev.hscfgcmd = 0;
+ btmrvl_send_hscfg_cmd(priv);
+ }
+
+ if (priv->btmrvl_dev.pscmd) {
+ priv->btmrvl_dev.pscmd = 0;
+ btmrvl_enable_ps(priv);
+ }
+
+ if (priv->btmrvl_dev.hscmd) {
+ priv->btmrvl_dev.hscmd = 0;
+
+ if (priv->btmrvl_dev.hsmode) {
+ ret = btmrvl_enable_hs(priv);
+ } else {
+ ret = priv->hw_wakeup_firmware(priv);
+ priv->adapter->hs_state = HS_DEACTIVATED;
+ BT_DBG("BT: HS DEACTIVATED due to host activity!");
+ }
+ }
+
+ return ret;
+}
+
+void btmrvl_firmware_dump(struct btmrvl_private *priv)
+{
+ if (priv->firmware_dump)
+ priv->firmware_dump(priv);
+}
+
+static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
+{
+ int ret = 0;
+
+ if (!skb || !skb->data)
+ return -EINVAL;
+
+ if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
+ BT_ERR("Tx Error: Bad skb length %d : %d",
+ skb->len, BTM_UPLD_SIZE);
+ return -EINVAL;
+ }
+
+ skb_push(skb, BTM_HEADER_LEN);
+
+ /* header type: byte[3]
+ * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
+ * header length: byte[2][1][0]
+ */
+
+ skb->data[0] = (skb->len & 0x0000ff);
+ skb->data[1] = (skb->len & 0x00ff00) >> 8;
+ skb->data[2] = (skb->len & 0xff0000) >> 16;
+ skb->data[3] = bt_cb(skb)->pkt_type;
+
+ if (priv->hw_host_to_card)
+ ret = priv->hw_host_to_card(priv, skb->data, skb->len);
+
+ return ret;
+}
+
+static void btmrvl_init_adapter(struct btmrvl_private *priv)
+{
+ int buf_size;
+
+ skb_queue_head_init(&priv->adapter->tx_queue);
+
+ priv->adapter->ps_state = PS_AWAKE;
+
+ buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
+ priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
+ if (!priv->adapter->hw_regs_buf) {
+ priv->adapter->hw_regs = NULL;
+ BT_ERR("Unable to allocate buffer for hw_regs.");
+ } else {
+ priv->adapter->hw_regs =
+ (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
+ BTSDIO_DMA_ALIGN);
+ BT_DBG("hw_regs_buf=%p hw_regs=%p",
+ priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
+ }
+
+ init_waitqueue_head(&priv->adapter->cmd_wait_q);
+ init_waitqueue_head(&priv->adapter->event_hs_wait_q);
+}
+
+static void btmrvl_free_adapter(struct btmrvl_private *priv)
+{
+ skb_queue_purge(&priv->adapter->tx_queue);
+
+ kfree(priv->adapter->hw_regs_buf);
+ kfree(priv->adapter);
+
+ priv->adapter = NULL;
+}
+
+static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btmrvl_private *priv = hci_get_drvdata(hdev);
+
+ BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_COMMAND_PKT:
+ hdev->stat.cmd_tx++;
+ break;
+
+ case HCI_ACLDATA_PKT:
+ hdev->stat.acl_tx++;
+ break;
+
+ case HCI_SCODATA_PKT:
+ hdev->stat.sco_tx++;
+ break;
+ }
+
+ skb_queue_tail(&priv->adapter->tx_queue, skb);
+
+ wake_up_interruptible(&priv->main_thread.wait_q);
+
+ return 0;
+}
+
+static int btmrvl_flush(struct hci_dev *hdev)
+{
+ struct btmrvl_private *priv = hci_get_drvdata(hdev);
+
+ skb_queue_purge(&priv->adapter->tx_queue);
+
+ return 0;
+}
+
+static int btmrvl_close(struct hci_dev *hdev)
+{
+ struct btmrvl_private *priv = hci_get_drvdata(hdev);
+
+ skb_queue_purge(&priv->adapter->tx_queue);
+
+ return 0;
+}
+
+static int btmrvl_open(struct hci_dev *hdev)
+{
+ return 0;
+}
+
+static int btmrvl_download_cal_data(struct btmrvl_private *priv,
+ u8 *data, int len)
+{
+ int ret;
+
+ data[0] = 0x00;
+ data[1] = 0x00;
+ data[2] = 0x00;
+ data[3] = len;
+
+ print_hex_dump_bytes("Calibration data: ",
+ DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
+
+ ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
+ BT_CAL_HDR_LEN + len);
+ if (ret)
+ BT_ERR("Failed to download caibration data");
+
+ return 0;
+}
+
+static int btmrvl_check_device_tree(struct btmrvl_private *priv)
+{
+ struct device_node *dt_node;
+ u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
+ int ret;
+ u32 val;
+
+ for_each_compatible_node(dt_node, NULL, "btmrvl,cfgdata") {
+ ret = of_property_read_u32(dt_node, "btmrvl,gpio-gap", &val);
+ if (!ret)
+ priv->btmrvl_dev.gpio_gap = val;
+
+ ret = of_property_read_u8_array(dt_node, "btmrvl,cal-data",
+ cal_data + BT_CAL_HDR_LEN,
+ BT_CAL_DATA_SIZE);
+ if (ret) {
+ of_node_put(dt_node);
+ return ret;
+ }
+
+ BT_DBG("Use cal data from device tree");
+ ret = btmrvl_download_cal_data(priv, cal_data,
+ BT_CAL_DATA_SIZE);
+ if (ret) {
+ BT_ERR("Fail to download calibrate data");
+ of_node_put(dt_node);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int btmrvl_setup(struct hci_dev *hdev)
+{
+ struct btmrvl_private *priv = hci_get_drvdata(hdev);
+ int ret;
+
+ ret = btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
+ if (ret)
+ return ret;
+
+ priv->btmrvl_dev.gpio_gap = 0xffff;
+
+ btmrvl_check_device_tree(priv);
+
+ btmrvl_enable_sco_routing_to_host(priv);
+
+ btmrvl_pscan_window_reporting(priv, 0x01);
+
+ priv->btmrvl_dev.psmode = 1;
+ btmrvl_enable_ps(priv);
+
+ btmrvl_send_hscfg_cmd(priv);
+
+ return 0;
+}
+
+static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+ struct sk_buff *skb;
+ long ret;
+ u8 buf[8];
+
+ buf[0] = MRVL_VENDOR_PKT;
+ buf[1] = sizeof(bdaddr_t);
+ memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
+
+ skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ ret = PTR_ERR(skb);
+ BT_ERR("%s: changing btmrvl device address failed (%ld)",
+ hdev->name, ret);
+ return ret;
+ }
+ kfree_skb(skb);
+
+ return 0;
+}
+
+/*
+ * This function handles the event generated by firmware, rx data
+ * received from firmware, and tx data sent from kernel.
+ */
+static int btmrvl_service_main_thread(void *data)
+{
+ struct btmrvl_thread *thread = data;
+ struct btmrvl_private *priv = thread->priv;
+ struct btmrvl_adapter *adapter = priv->adapter;
+ wait_queue_t wait;
+ struct sk_buff *skb;
+ ulong flags;
+
+ init_waitqueue_entry(&wait, current);
+
+ for (;;) {
+ add_wait_queue(&thread->wait_q, &wait);
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (kthread_should_stop() || priv->surprise_removed) {
+ BT_DBG("main_thread: break from main thread");
+ break;
+ }
+
+ if (adapter->wakeup_tries ||
+ ((!adapter->int_count) &&
+ (!priv->btmrvl_dev.tx_dnld_rdy ||
+ skb_queue_empty(&adapter->tx_queue)))) {
+ BT_DBG("main_thread is sleeping...");
+ schedule();
+ }
+
+ set_current_state(TASK_RUNNING);
+
+ remove_wait_queue(&thread->wait_q, &wait);
+
+ BT_DBG("main_thread woke up");
+
+ if (kthread_should_stop() || priv->surprise_removed) {
+ BT_DBG("main_thread: break from main thread");
+ break;
+ }
+
+ spin_lock_irqsave(&priv->driver_lock, flags);
+ if (adapter->int_count) {
+ adapter->int_count = 0;
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+ priv->hw_process_int_status(priv);
+ } else if (adapter->ps_state == PS_SLEEP &&
+ !skb_queue_empty(&adapter->tx_queue)) {
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+ adapter->wakeup_tries++;
+ priv->hw_wakeup_firmware(priv);
+ continue;
+ } else {
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+ }
+
+ if (adapter->ps_state == PS_SLEEP)
+ continue;
+
+ if (!priv->btmrvl_dev.tx_dnld_rdy)
+ continue;
+
+ skb = skb_dequeue(&adapter->tx_queue);
+ if (skb) {
+ if (btmrvl_tx_pkt(priv, skb))
+ priv->btmrvl_dev.hcidev->stat.err_tx++;
+ else
+ priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
+
+ kfree_skb(skb);
+ }
+ }
+
+ return 0;
+}
+
+int btmrvl_register_hdev(struct btmrvl_private *priv)
+{
+ struct hci_dev *hdev = NULL;
+ int ret;
+
+ hdev = hci_alloc_dev();
+ if (!hdev) {
+ BT_ERR("Can not allocate HCI device");
+ goto err_hdev;
+ }
+
+ priv->btmrvl_dev.hcidev = hdev;
+ hci_set_drvdata(hdev, priv);
+
+ hdev->bus = HCI_SDIO;
+ hdev->open = btmrvl_open;
+ hdev->close = btmrvl_close;
+ hdev->flush = btmrvl_flush;
+ hdev->send = btmrvl_send_frame;
+ hdev->setup = btmrvl_setup;
+ hdev->set_bdaddr = btmrvl_set_bdaddr;
+
+ hdev->dev_type = priv->btmrvl_dev.dev_type;
+
+ ret = hci_register_dev(hdev);
+ if (ret < 0) {
+ BT_ERR("Can not register HCI device");
+ goto err_hci_register_dev;
+ }
+
+#ifdef CONFIG_DEBUG_FS
+ btmrvl_debugfs_init(hdev);
+#endif
+
+ return 0;
+
+err_hci_register_dev:
+ hci_free_dev(hdev);
+
+err_hdev:
+ /* Stop the thread servicing the interrupts */
+ kthread_stop(priv->main_thread.task);
+
+ btmrvl_free_adapter(priv);
+ kfree(priv);
+
+ return -ENOMEM;
+}
+EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
+
+struct btmrvl_private *btmrvl_add_card(void *card)
+{
+ struct btmrvl_private *priv;
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ BT_ERR("Can not allocate priv");
+ goto err_priv;
+ }
+
+ priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
+ if (!priv->adapter) {
+ BT_ERR("Allocate buffer for btmrvl_adapter failed!");
+ goto err_adapter;
+ }
+
+ btmrvl_init_adapter(priv);
+
+ BT_DBG("Starting kthread...");
+ priv->main_thread.priv = priv;
+ spin_lock_init(&priv->driver_lock);
+
+ init_waitqueue_head(&priv->main_thread.wait_q);
+ priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
+ &priv->main_thread, "btmrvl_main_service");
+ if (IS_ERR(priv->main_thread.task))
+ goto err_thread;
+
+ priv->btmrvl_dev.card = card;
+ priv->btmrvl_dev.tx_dnld_rdy = true;
+
+ return priv;
+
+err_thread:
+ btmrvl_free_adapter(priv);
+
+err_adapter:
+ kfree(priv);
+
+err_priv:
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(btmrvl_add_card);
+
+int btmrvl_remove_card(struct btmrvl_private *priv)
+{
+ struct hci_dev *hdev;
+
+ hdev = priv->btmrvl_dev.hcidev;
+
+ wake_up_interruptible(&priv->adapter->cmd_wait_q);
+ wake_up_interruptible(&priv->adapter->event_hs_wait_q);
+
+ kthread_stop(priv->main_thread.task);
+
+#ifdef CONFIG_DEBUG_FS
+ btmrvl_debugfs_remove(hdev);
+#endif
+
+ hci_unregister_dev(hdev);
+
+ hci_free_dev(hdev);
+
+ priv->btmrvl_dev.hcidev = NULL;
+
+ btmrvl_free_adapter(priv);
+
+ kfree(priv);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btmrvl_remove_card);
+
+MODULE_AUTHOR("Marvell International Ltd.");
+MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
new file mode 100644
index 0000000..71ea2a3
--- /dev/null
+++ b/drivers/bluetooth/btmrvl_sdio.c
@@ -0,0 +1,1660 @@
+/**
+ * Marvell BT-over-SDIO driver: SDIO interface related functions.
+ *
+ * Copyright (C) 2009, Marvell International Ltd.
+ *
+ * This software file (the "File") is distributed by Marvell International
+ * Ltd. under the terms of the GNU General Public License Version 2, June 1991
+ * (the "License"). You may use, redistribute and/or modify this File in
+ * accordance with the terms and conditions of the License, a copy of which
+ * is available by writing to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
+ * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
+ *
+ *
+ * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
+ * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
+ * this warranty disclaimer.
+ **/
+
+#include <linux/firmware.h>
+#include <linux/slab.h>
+
+#include <linux/mmc/sdio_ids.h>
+#include <linux/mmc/sdio_func.h>
+#include <linux/module.h>
+#include <linux/devcoredump.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btmrvl_drv.h"
+#include "btmrvl_sdio.h"
+
+#define VERSION "1.0"
+
+static struct memory_type_mapping mem_type_mapping_tbl[] = {
+ {"ITCM", NULL, 0, 0xF0},
+ {"DTCM", NULL, 0, 0xF1},
+ {"SQRAM", NULL, 0, 0xF2},
+ {"APU", NULL, 0, 0xF3},
+ {"CIU", NULL, 0, 0xF4},
+ {"ICU", NULL, 0, 0xF5},
+ {"MAC", NULL, 0, 0xF6},
+ {"EXT7", NULL, 0, 0xF7},
+ {"EXT8", NULL, 0, 0xF8},
+ {"EXT9", NULL, 0, 0xF9},
+ {"EXT10", NULL, 0, 0xFA},
+ {"EXT11", NULL, 0, 0xFB},
+ {"EXT12", NULL, 0, 0xFC},
+ {"EXT13", NULL, 0, 0xFD},
+ {"EXTLAST", NULL, 0, 0xFE},
+};
+
+/* The btmrvl_sdio_remove() callback function is called
+ * when user removes this module from kernel space or ejects
+ * the card from the slot. The driver handles these 2 cases
+ * differently.
+ * If the user is removing the module, a MODULE_SHUTDOWN_REQ
+ * command is sent to firmware and interrupt will be disabled.
+ * If the card is removed, there is no need to send command
+ * or disable interrupt.
+ *
+ * The variable 'user_rmmod' is used to distinguish these two
+ * scenarios. This flag is initialized as FALSE in case the card
+ * is removed, and will be set to TRUE for module removal when
+ * module_exit function is called.
+ */
+static u8 user_rmmod;
+static u8 sdio_ireg;
+
+static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = {
+ .cfg = 0x03,
+ .host_int_mask = 0x04,
+ .host_intstatus = 0x05,
+ .card_status = 0x20,
+ .sq_read_base_addr_a0 = 0x10,
+ .sq_read_base_addr_a1 = 0x11,
+ .card_fw_status0 = 0x40,
+ .card_fw_status1 = 0x41,
+ .card_rx_len = 0x42,
+ .card_rx_unit = 0x43,
+ .io_port_0 = 0x00,
+ .io_port_1 = 0x01,
+ .io_port_2 = 0x02,
+ .int_read_to_clear = false,
+};
+static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
+ .cfg = 0x00,
+ .host_int_mask = 0x02,
+ .host_intstatus = 0x03,
+ .card_status = 0x30,
+ .sq_read_base_addr_a0 = 0x40,
+ .sq_read_base_addr_a1 = 0x41,
+ .card_revision = 0x5c,
+ .card_fw_status0 = 0x60,
+ .card_fw_status1 = 0x61,
+ .card_rx_len = 0x62,
+ .card_rx_unit = 0x63,
+ .io_port_0 = 0x78,
+ .io_port_1 = 0x79,
+ .io_port_2 = 0x7a,
+ .int_read_to_clear = false,
+};
+
+static const struct btmrvl_sdio_card_reg btmrvl_reg_8887 = {
+ .cfg = 0x00,
+ .host_int_mask = 0x08,
+ .host_intstatus = 0x0C,
+ .card_status = 0x5C,
+ .sq_read_base_addr_a0 = 0x6C,
+ .sq_read_base_addr_a1 = 0x6D,
+ .card_revision = 0xC8,
+ .card_fw_status0 = 0x88,
+ .card_fw_status1 = 0x89,
+ .card_rx_len = 0x8A,
+ .card_rx_unit = 0x8B,
+ .io_port_0 = 0xE4,
+ .io_port_1 = 0xE5,
+ .io_port_2 = 0xE6,
+ .int_read_to_clear = true,
+ .host_int_rsr = 0x04,
+ .card_misc_cfg = 0xD8,
+};
+
+static const struct btmrvl_sdio_card_reg btmrvl_reg_8897 = {
+ .cfg = 0x00,
+ .host_int_mask = 0x02,
+ .host_intstatus = 0x03,
+ .card_status = 0x50,
+ .sq_read_base_addr_a0 = 0x60,
+ .sq_read_base_addr_a1 = 0x61,
+ .card_revision = 0xbc,
+ .card_fw_status0 = 0xc0,
+ .card_fw_status1 = 0xc1,
+ .card_rx_len = 0xc2,
+ .card_rx_unit = 0xc3,
+ .io_port_0 = 0xd8,
+ .io_port_1 = 0xd9,
+ .io_port_2 = 0xda,
+ .int_read_to_clear = true,
+ .host_int_rsr = 0x01,
+ .card_misc_cfg = 0xcc,
+ .fw_dump_ctrl = 0xe2,
+ .fw_dump_start = 0xe3,
+ .fw_dump_end = 0xea,
+};
+
+static const struct btmrvl_sdio_card_reg btmrvl_reg_8997 = {
+ .cfg = 0x00,
+ .host_int_mask = 0x08,
+ .host_intstatus = 0x0c,
+ .card_status = 0x5c,
+ .sq_read_base_addr_a0 = 0xf8,
+ .sq_read_base_addr_a1 = 0xf9,
+ .card_revision = 0xc8,
+ .card_fw_status0 = 0xe8,
+ .card_fw_status1 = 0xe9,
+ .card_rx_len = 0xea,
+ .card_rx_unit = 0xeb,
+ .io_port_0 = 0xe4,
+ .io_port_1 = 0xe5,
+ .io_port_2 = 0xe6,
+ .int_read_to_clear = true,
+ .host_int_rsr = 0x04,
+ .card_misc_cfg = 0xD8,
+ .fw_dump_ctrl = 0xf0,
+ .fw_dump_start = 0xf1,
+ .fw_dump_end = 0xf8,
+};
+
+static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
+ .helper = "mrvl/sd8688_helper.bin",
+ .firmware = "mrvl/sd8688.bin",
+ .reg = &btmrvl_reg_8688,
+ .support_pscan_win_report = false,
+ .sd_blksz_fw_dl = 64,
+ .supports_fw_dump = false,
+};
+
+static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
+ .helper = NULL,
+ .firmware = "mrvl/sd8787_uapsta.bin",
+ .reg = &btmrvl_reg_87xx,
+ .support_pscan_win_report = false,
+ .sd_blksz_fw_dl = 256,
+ .supports_fw_dump = false,
+};
+
+static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
+ .helper = NULL,
+ .firmware = "mrvl/sd8797_uapsta.bin",
+ .reg = &btmrvl_reg_87xx,
+ .support_pscan_win_report = false,
+ .sd_blksz_fw_dl = 256,
+ .supports_fw_dump = false,
+};
+
+static const struct btmrvl_sdio_device btmrvl_sdio_sd8887 = {
+ .helper = NULL,
+ .firmware = "mrvl/sd8887_uapsta.bin",
+ .reg = &btmrvl_reg_8887,
+ .support_pscan_win_report = true,
+ .sd_blksz_fw_dl = 256,
+ .supports_fw_dump = false,
+};
+
+static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
+ .helper = NULL,
+ .firmware = "mrvl/sd8897_uapsta.bin",
+ .reg = &btmrvl_reg_8897,
+ .support_pscan_win_report = true,
+ .sd_blksz_fw_dl = 256,
+ .supports_fw_dump = true,
+};
+
+static const struct btmrvl_sdio_device btmrvl_sdio_sd8997 = {
+ .helper = NULL,
+ .firmware = "mrvl/sd8997_uapsta.bin",
+ .reg = &btmrvl_reg_8997,
+ .support_pscan_win_report = true,
+ .sd_blksz_fw_dl = 256,
+ .supports_fw_dump = true,
+};
+
+static const struct sdio_device_id btmrvl_sdio_ids[] = {
+ /* Marvell SD8688 Bluetooth device */
+ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
+ .driver_data = (unsigned long)&btmrvl_sdio_sd8688 },
+ /* Marvell SD8787 Bluetooth device */
+ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
+ .driver_data = (unsigned long)&btmrvl_sdio_sd8787 },
+ /* Marvell SD8787 Bluetooth AMP device */
+ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B),
+ .driver_data = (unsigned long)&btmrvl_sdio_sd8787 },
+ /* Marvell SD8797 Bluetooth device */
+ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
+ .driver_data = (unsigned long)&btmrvl_sdio_sd8797 },
+ /* Marvell SD8887 Bluetooth device */
+ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9136),
+ .driver_data = (unsigned long)&btmrvl_sdio_sd8887 },
+ /* Marvell SD8897 Bluetooth device */
+ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E),
+ .driver_data = (unsigned long)&btmrvl_sdio_sd8897 },
+ /* Marvell SD8997 Bluetooth device */
+ { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9142),
+ .driver_data = (unsigned long)&btmrvl_sdio_sd8997 },
+
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
+
+static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
+{
+ u8 reg;
+ int ret;
+
+ reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
+ if (!ret)
+ card->rx_unit = reg;
+
+ return ret;
+}
+
+static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
+{
+ u8 fws0, fws1;
+ int ret;
+
+ *dat = 0;
+
+ fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
+ if (ret)
+ return -EIO;
+
+ fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
+ if (ret)
+ return -EIO;
+
+ *dat = (((u16) fws1) << 8) | fws0;
+
+ return 0;
+}
+
+static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
+{
+ u8 reg;
+ int ret;
+
+ reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
+ if (!ret)
+ *dat = (u16) reg << card->rx_unit;
+
+ return ret;
+}
+
+static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
+ u8 mask)
+{
+ int ret;
+
+ sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
+ if (ret) {
+ BT_ERR("Unable to enable the host interrupt!");
+ ret = -EIO;
+ }
+
+ return ret;
+}
+
+static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
+ u8 mask)
+{
+ u8 host_int_mask;
+ int ret;
+
+ host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
+ if (ret)
+ return -EIO;
+
+ host_int_mask &= ~mask;
+
+ sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
+ if (ret < 0) {
+ BT_ERR("Unable to disable the host interrupt!");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
+{
+ unsigned int tries;
+ u8 status;
+ int ret;
+
+ for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
+ status = sdio_readb(card->func, card->reg->card_status, &ret);
+ if (ret)
+ goto failed;
+ if ((status & bits) == bits)
+ return ret;
+
+ udelay(1);
+ }
+
+ ret = -ETIMEDOUT;
+
+failed:
+ BT_ERR("FAILED! ret=%d", ret);
+
+ return ret;
+}
+
+static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
+ int pollnum)
+{
+ u16 firmwarestat;
+ int tries, ret;
+
+ /* Wait for firmware to become ready */
+ for (tries = 0; tries < pollnum; tries++) {
+ sdio_claim_host(card->func);
+ ret = btmrvl_sdio_read_fw_status(card, &firmwarestat);
+ sdio_release_host(card->func);
+ if (ret < 0)
+ continue;
+
+ if (firmwarestat == FIRMWARE_READY)
+ return 0;
+
+ msleep(10);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
+{
+ const struct firmware *fw_helper = NULL;
+ const u8 *helper = NULL;
+ int ret;
+ void *tmphlprbuf = NULL;
+ int tmphlprbufsz, hlprblknow, helperlen;
+ u8 *helperbuf;
+ u32 tx_len;
+
+ ret = request_firmware(&fw_helper, card->helper,
+ &card->func->dev);
+ if ((ret < 0) || !fw_helper) {
+ BT_ERR("request_firmware(helper) failed, error code = %d",
+ ret);
+ ret = -ENOENT;
+ goto done;
+ }
+
+ helper = fw_helper->data;
+ helperlen = fw_helper->size;
+
+ BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
+ helperlen, SDIO_BLOCK_SIZE);
+
+ tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
+
+ tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
+ if (!tmphlprbuf) {
+ BT_ERR("Unable to allocate buffer for helper."
+ " Terminating download");
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
+
+ /* Perform helper data transfer */
+ tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
+ - SDIO_HEADER_LEN;
+ hlprblknow = 0;
+
+ do {
+ ret = btmrvl_sdio_poll_card_status(card,
+ CARD_IO_READY | DN_LD_CARD_RDY);
+ if (ret < 0) {
+ BT_ERR("Helper download poll status timeout @ %d",
+ hlprblknow);
+ goto done;
+ }
+
+ /* Check if there is more data? */
+ if (hlprblknow >= helperlen)
+ break;
+
+ if (helperlen - hlprblknow < tx_len)
+ tx_len = helperlen - hlprblknow;
+
+ /* Little-endian */
+ helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
+ helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
+ helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
+ helperbuf[3] = ((tx_len & 0xff000000) >> 24);
+
+ memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
+ tx_len);
+
+ /* Now send the data */
+ ret = sdio_writesb(card->func, card->ioport, helperbuf,
+ FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
+ if (ret < 0) {
+ BT_ERR("IO error during helper download @ %d",
+ hlprblknow);
+ goto done;
+ }
+
+ hlprblknow += tx_len;
+ } while (true);
+
+ BT_DBG("Transferring helper image EOF block");
+
+ memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
+
+ ret = sdio_writesb(card->func, card->ioport, helperbuf,
+ SDIO_BLOCK_SIZE);
+ if (ret < 0) {
+ BT_ERR("IO error in writing helper image EOF block");
+ goto done;
+ }
+
+ ret = 0;
+
+done:
+ kfree(tmphlprbuf);
+ release_firmware(fw_helper);
+ return ret;
+}
+
+static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
+{
+ const struct firmware *fw_firmware = NULL;
+ const u8 *firmware = NULL;
+ int firmwarelen, tmpfwbufsz, ret;
+ unsigned int tries, offset;
+ u8 base0, base1;
+ void *tmpfwbuf = NULL;
+ u8 *fwbuf;
+ u16 len, blksz_dl = card->sd_blksz_fw_dl;
+ int txlen = 0, tx_blocks = 0, count = 0;
+
+ ret = request_firmware(&fw_firmware, card->firmware,
+ &card->func->dev);
+ if ((ret < 0) || !fw_firmware) {
+ BT_ERR("request_firmware(firmware) failed, error code = %d",
+ ret);
+ ret = -ENOENT;
+ goto done;
+ }
+
+ firmware = fw_firmware->data;
+ firmwarelen = fw_firmware->size;
+
+ BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
+
+ tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
+ tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
+ if (!tmpfwbuf) {
+ BT_ERR("Unable to allocate buffer for firmware."
+ " Terminating download");
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ /* Ensure aligned firmware buffer */
+ fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
+
+ /* Perform firmware data transfer */
+ offset = 0;
+ do {
+ ret = btmrvl_sdio_poll_card_status(card,
+ CARD_IO_READY | DN_LD_CARD_RDY);
+ if (ret < 0) {
+ BT_ERR("FW download with helper poll status"
+ " timeout @ %d", offset);
+ goto done;
+ }
+
+ /* Check if there is more data ? */
+ if (offset >= firmwarelen)
+ break;
+
+ for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
+ base0 = sdio_readb(card->func,
+ card->reg->sq_read_base_addr_a0, &ret);
+ if (ret) {
+ BT_ERR("BASE0 register read failed:"
+ " base0 = 0x%04X(%d)."
+ " Terminating download",
+ base0, base0);
+ ret = -EIO;
+ goto done;
+ }
+ base1 = sdio_readb(card->func,
+ card->reg->sq_read_base_addr_a1, &ret);
+ if (ret) {
+ BT_ERR("BASE1 register read failed:"
+ " base1 = 0x%04X(%d)."
+ " Terminating download",
+ base1, base1);
+ ret = -EIO;
+ goto done;
+ }
+
+ len = (((u16) base1) << 8) | base0;
+ if (len)
+ break;
+
+ udelay(10);
+ }
+
+ if (!len)
+ break;
+ else if (len > BTM_UPLD_SIZE) {
+ BT_ERR("FW download failure @%d, invalid length %d",
+ offset, len);
+ ret = -EINVAL;
+ goto done;
+ }
+
+ txlen = len;
+
+ if (len & BIT(0)) {
+ count++;
+ if (count > MAX_WRITE_IOMEM_RETRY) {
+ BT_ERR("FW download failure @%d, "
+ "over max retry count", offset);
+ ret = -EIO;
+ goto done;
+ }
+ BT_ERR("FW CRC error indicated by the helper: "
+ "len = 0x%04X, txlen = %d", len, txlen);
+ len &= ~BIT(0);
+ /* Set txlen to 0 so as to resend from same offset */
+ txlen = 0;
+ } else {
+ count = 0;
+
+ /* Last block ? */
+ if (firmwarelen - offset < txlen)
+ txlen = firmwarelen - offset;
+
+ tx_blocks = DIV_ROUND_UP(txlen, blksz_dl);
+
+ memcpy(fwbuf, &firmware[offset], txlen);
+ }
+
+ ret = sdio_writesb(card->func, card->ioport, fwbuf,
+ tx_blocks * blksz_dl);
+
+ if (ret < 0) {
+ BT_ERR("FW download, writesb(%d) failed @%d",
+ count, offset);
+ sdio_writeb(card->func, HOST_CMD53_FIN,
+ card->reg->cfg, &ret);
+ if (ret)
+ BT_ERR("writeb failed (CFG)");
+ }
+
+ offset += txlen;
+ } while (true);
+
+ BT_INFO("FW download over, size %d bytes", offset);
+
+ ret = 0;
+
+done:
+ kfree(tmpfwbuf);
+ release_firmware(fw_firmware);
+ return ret;
+}
+
+static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
+{
+ u16 buf_len = 0;
+ int ret, num_blocks, blksz;
+ struct sk_buff *skb = NULL;
+ u32 type;
+ u8 *payload = NULL;
+ struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
+ struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
+
+ if (!card || !card->func) {
+ BT_ERR("card or function is NULL!");
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ /* Read the length of data to be transferred */
+ ret = btmrvl_sdio_read_rx_len(card, &buf_len);
+ if (ret < 0) {
+ BT_ERR("read rx_len failed");
+ ret = -EIO;
+ goto exit;
+ }
+
+ blksz = SDIO_BLOCK_SIZE;
+ num_blocks = DIV_ROUND_UP(buf_len, blksz);
+
+ if (buf_len <= SDIO_HEADER_LEN
+ || (num_blocks * blksz) > ALLOC_BUF_SIZE) {
+ BT_ERR("invalid packet length: %d", buf_len);
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ /* Allocate buffer */
+ skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC);
+ if (!skb) {
+ BT_ERR("No free skb");
+ ret = -ENOMEM;
+ goto exit;
+ }
+
+ if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
+ skb_put(skb, (unsigned long) skb->data &
+ (BTSDIO_DMA_ALIGN - 1));
+ skb_pull(skb, (unsigned long) skb->data &
+ (BTSDIO_DMA_ALIGN - 1));
+ }
+
+ payload = skb->data;
+
+ ret = sdio_readsb(card->func, payload, card->ioport,
+ num_blocks * blksz);
+ if (ret < 0) {
+ BT_ERR("readsb failed: %d", ret);
+ ret = -EIO;
+ goto exit;
+ }
+
+ /* This is SDIO specific header length: byte[2][1][0], type: byte[3]
+ * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
+ */
+
+ buf_len = payload[0];
+ buf_len |= payload[1] << 8;
+ buf_len |= payload[2] << 16;
+
+ if (buf_len > blksz * num_blocks) {
+ BT_ERR("Skip incorrect packet: hdrlen %d buffer %d",
+ buf_len, blksz * num_blocks);
+ ret = -EIO;
+ goto exit;
+ }
+
+ type = payload[3];
+
+ switch (type) {
+ case HCI_ACLDATA_PKT:
+ case HCI_SCODATA_PKT:
+ case HCI_EVENT_PKT:
+ bt_cb(skb)->pkt_type = type;
+ skb_put(skb, buf_len);
+ skb_pull(skb, SDIO_HEADER_LEN);
+
+ if (type == HCI_EVENT_PKT) {
+ if (btmrvl_check_evtpkt(priv, skb))
+ hci_recv_frame(hdev, skb);
+ } else {
+ hci_recv_frame(hdev, skb);
+ }
+
+ hdev->stat.byte_rx += buf_len;
+ break;
+
+ case MRVL_VENDOR_PKT:
+ bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
+ skb_put(skb, buf_len);
+ skb_pull(skb, SDIO_HEADER_LEN);
+
+ if (btmrvl_process_event(priv, skb))
+ hci_recv_frame(hdev, skb);
+
+ hdev->stat.byte_rx += buf_len;
+ break;
+
+ default:
+ BT_ERR("Unknown packet type:%d", type);
+ BT_ERR("hex: %*ph", blksz * num_blocks, payload);
+
+ kfree_skb(skb);
+ skb = NULL;
+ break;
+ }
+
+exit:
+ if (ret) {
+ hdev->stat.err_rx++;
+ kfree_skb(skb);
+ }
+
+ return ret;
+}
+
+static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
+{
+ ulong flags;
+ u8 ireg;
+ struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
+
+ spin_lock_irqsave(&priv->driver_lock, flags);
+ ireg = sdio_ireg;
+ sdio_ireg = 0;
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+
+ sdio_claim_host(card->func);
+ if (ireg & DN_LD_HOST_INT_STATUS) {
+ if (priv->btmrvl_dev.tx_dnld_rdy)
+ BT_DBG("tx_done already received: "
+ " int_status=0x%x", ireg);
+ else
+ priv->btmrvl_dev.tx_dnld_rdy = true;
+ }
+
+ if (ireg & UP_LD_HOST_INT_STATUS)
+ btmrvl_sdio_card_to_host(priv);
+
+ sdio_release_host(card->func);
+
+ return 0;
+}
+
+static int btmrvl_sdio_read_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
+{
+ struct btmrvl_adapter *adapter = card->priv->adapter;
+ int ret;
+
+ ret = sdio_readsb(card->func, adapter->hw_regs, 0, SDIO_BLOCK_SIZE);
+ if (ret) {
+ BT_ERR("sdio_readsb: read int hw_regs failed: %d", ret);
+ return ret;
+ }
+
+ *ireg = adapter->hw_regs[card->reg->host_intstatus];
+ BT_DBG("hw_regs[%#x]=%#x", card->reg->host_intstatus, *ireg);
+
+ return 0;
+}
+
+static int btmrvl_sdio_write_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
+{
+ int ret;
+
+ *ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
+ if (ret) {
+ BT_ERR("sdio_readb: read int status failed: %d", ret);
+ return ret;
+ }
+
+ if (*ireg) {
+ /*
+ * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
+ * Clear the interrupt status register and re-enable the
+ * interrupt.
+ */
+ BT_DBG("int_status = 0x%x", *ireg);
+
+ sdio_writeb(card->func, ~(*ireg) & (DN_LD_HOST_INT_STATUS |
+ UP_LD_HOST_INT_STATUS),
+ card->reg->host_intstatus, &ret);
+ if (ret) {
+ BT_ERR("sdio_writeb: clear int status failed: %d", ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static void btmrvl_sdio_interrupt(struct sdio_func *func)
+{
+ struct btmrvl_private *priv;
+ struct btmrvl_sdio_card *card;
+ ulong flags;
+ u8 ireg = 0;
+ int ret;
+
+ card = sdio_get_drvdata(func);
+ if (!card || !card->priv) {
+ BT_ERR("sbi_interrupt(%p) card or priv is NULL, card=%p",
+ func, card);
+ return;
+ }
+
+ priv = card->priv;
+
+ if (priv->surprise_removed)
+ return;
+
+ if (card->reg->int_read_to_clear)
+ ret = btmrvl_sdio_read_to_clear(card, &ireg);
+ else
+ ret = btmrvl_sdio_write_to_clear(card, &ireg);
+
+ if (ret)
+ return;
+
+ spin_lock_irqsave(&priv->driver_lock, flags);
+ sdio_ireg |= ireg;
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+
+ btmrvl_interrupt(priv);
+}
+
+static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
+{
+ struct sdio_func *func;
+ u8 reg;
+ int ret = 0;
+
+ if (!card || !card->func) {
+ BT_ERR("Error: card or function is NULL!");
+ ret = -EINVAL;
+ goto failed;
+ }
+
+ func = card->func;
+
+ sdio_claim_host(func);
+
+ ret = sdio_enable_func(func);
+ if (ret) {
+ BT_ERR("sdio_enable_func() failed: ret=%d", ret);
+ ret = -EIO;
+ goto release_host;
+ }
+
+ ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
+ if (ret) {
+ BT_ERR("sdio_claim_irq failed: ret=%d", ret);
+ ret = -EIO;
+ goto disable_func;
+ }
+
+ ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
+ if (ret) {
+ BT_ERR("cannot set SDIO block size");
+ ret = -EIO;
+ goto release_irq;
+ }
+
+ reg = sdio_readb(func, card->reg->io_port_0, &ret);
+ if (ret < 0) {
+ ret = -EIO;
+ goto release_irq;
+ }
+
+ card->ioport = reg;
+
+ reg = sdio_readb(func, card->reg->io_port_1, &ret);
+ if (ret < 0) {
+ ret = -EIO;
+ goto release_irq;
+ }
+
+ card->ioport |= (reg << 8);
+
+ reg = sdio_readb(func, card->reg->io_port_2, &ret);
+ if (ret < 0) {
+ ret = -EIO;
+ goto release_irq;
+ }
+
+ card->ioport |= (reg << 16);
+
+ BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
+
+ if (card->reg->int_read_to_clear) {
+ reg = sdio_readb(func, card->reg->host_int_rsr, &ret);
+ if (ret < 0) {
+ ret = -EIO;
+ goto release_irq;
+ }
+ sdio_writeb(func, reg | 0x3f, card->reg->host_int_rsr, &ret);
+ if (ret < 0) {
+ ret = -EIO;
+ goto release_irq;
+ }
+
+ reg = sdio_readb(func, card->reg->card_misc_cfg, &ret);
+ if (ret < 0) {
+ ret = -EIO;
+ goto release_irq;
+ }
+ sdio_writeb(func, reg | 0x10, card->reg->card_misc_cfg, &ret);
+ if (ret < 0) {
+ ret = -EIO;
+ goto release_irq;
+ }
+ }
+
+ sdio_set_drvdata(func, card);
+
+ sdio_release_host(func);
+
+ return 0;
+
+release_irq:
+ sdio_release_irq(func);
+
+disable_func:
+ sdio_disable_func(func);
+
+release_host:
+ sdio_release_host(func);
+
+failed:
+ return ret;
+}
+
+static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
+{
+ if (card && card->func) {
+ sdio_claim_host(card->func);
+ sdio_release_irq(card->func);
+ sdio_disable_func(card->func);
+ sdio_release_host(card->func);
+ sdio_set_drvdata(card->func, NULL);
+ }
+
+ return 0;
+}
+
+static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
+{
+ int ret;
+
+ if (!card || !card->func)
+ return -EINVAL;
+
+ sdio_claim_host(card->func);
+
+ ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
+
+ btmrvl_sdio_get_rx_unit(card);
+
+ sdio_release_host(card->func);
+
+ return ret;
+}
+
+static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
+{
+ int ret;
+
+ if (!card || !card->func)
+ return -EINVAL;
+
+ sdio_claim_host(card->func);
+
+ ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
+
+ sdio_release_host(card->func);
+
+ return ret;
+}
+
+static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
+ u8 *payload, u16 nb)
+{
+ struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
+ int ret = 0;
+ int buf_block_len;
+ int blksz;
+ int i = 0;
+ u8 *buf = NULL;
+ void *tmpbuf = NULL;
+ int tmpbufsz;
+
+ if (!card || !card->func) {
+ BT_ERR("card or function is NULL!");
+ return -EINVAL;
+ }
+
+ buf = payload;
+ if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
+ tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
+ tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
+ if (!tmpbuf)
+ return -ENOMEM;
+ buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
+ memcpy(buf, payload, nb);
+ }
+
+ blksz = SDIO_BLOCK_SIZE;
+ buf_block_len = DIV_ROUND_UP(nb, blksz);
+
+ sdio_claim_host(card->func);
+
+ do {
+ /* Transfer data to card */
+ ret = sdio_writesb(card->func, card->ioport, buf,
+ buf_block_len * blksz);
+ if (ret < 0) {
+ i++;
+ BT_ERR("i=%d writesb failed: %d", i, ret);
+ BT_ERR("hex: %*ph", nb, payload);
+ ret = -EIO;
+ if (i > MAX_WRITE_IOMEM_RETRY)
+ goto exit;
+ }
+ } while (ret);
+
+ priv->btmrvl_dev.tx_dnld_rdy = false;
+
+exit:
+ sdio_release_host(card->func);
+ kfree(tmpbuf);
+
+ return ret;
+}
+
+static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
+{
+ int ret;
+ u8 fws0;
+ int pollnum = MAX_POLL_TRIES;
+
+ if (!card || !card->func) {
+ BT_ERR("card or function is NULL!");
+ return -EINVAL;
+ }
+
+ if (!btmrvl_sdio_verify_fw_download(card, 1)) {
+ BT_DBG("Firmware already downloaded!");
+ return 0;
+ }
+
+ sdio_claim_host(card->func);
+
+ /* Check if other function driver is downloading the firmware */
+ fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
+ if (ret) {
+ BT_ERR("Failed to read FW downloading status!");
+ ret = -EIO;
+ goto done;
+ }
+ if (fws0) {
+ BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
+
+ /* Give other function more time to download the firmware */
+ pollnum *= 10;
+ } else {
+ if (card->helper) {
+ ret = btmrvl_sdio_download_helper(card);
+ if (ret) {
+ BT_ERR("Failed to download helper!");
+ ret = -EIO;
+ goto done;
+ }
+ }
+
+ if (btmrvl_sdio_download_fw_w_helper(card)) {
+ BT_ERR("Failed to download firmware!");
+ ret = -EIO;
+ goto done;
+ }
+ }
+
+ /*
+ * winner or not, with this test the FW synchronizes when the
+ * module can continue its initialization
+ */
+ if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
+ BT_ERR("FW failed to be active in time!");
+ return -ETIMEDOUT;
+ }
+
+ sdio_release_host(card->func);
+
+ return 0;
+
+done:
+ sdio_release_host(card->func);
+ return ret;
+}
+
+static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
+{
+ struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
+ int ret = 0;
+
+ if (!card || !card->func) {
+ BT_ERR("card or function is NULL!");
+ return -EINVAL;
+ }
+
+ sdio_claim_host(card->func);
+
+ sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
+
+ sdio_release_host(card->func);
+
+ BT_DBG("wake up firmware");
+
+ return ret;
+}
+
+static void btmrvl_sdio_dump_regs(struct btmrvl_private *priv)
+{
+ struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
+ int ret = 0;
+ unsigned int reg, reg_start, reg_end;
+ char buf[256], *ptr;
+ u8 loop, func, data;
+ int MAX_LOOP = 2;
+
+ btmrvl_sdio_wakeup_fw(priv);
+ sdio_claim_host(card->func);
+
+ for (loop = 0; loop < MAX_LOOP; loop++) {
+ memset(buf, 0, sizeof(buf));
+ ptr = buf;
+
+ if (loop == 0) {
+ /* Read the registers of SDIO function0 */
+ func = loop;
+ reg_start = 0;
+ reg_end = 9;
+ } else {
+ func = 2;
+ reg_start = 0;
+ reg_end = 0x09;
+ }
+
+ ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
+ func, reg_start, reg_end);
+ for (reg = reg_start; reg <= reg_end; reg++) {
+ if (func == 0)
+ data = sdio_f0_readb(card->func, reg, &ret);
+ else
+ data = sdio_readb(card->func, reg, &ret);
+
+ if (!ret) {
+ ptr += sprintf(ptr, "%02x ", data);
+ } else {
+ ptr += sprintf(ptr, "ERR");
+ break;
+ }
+ }
+
+ BT_INFO("%s", buf);
+ }
+
+ sdio_release_host(card->func);
+}
+
+/* This function read/write firmware */
+static enum
+rdwr_status btmrvl_sdio_rdwr_firmware(struct btmrvl_private *priv,
+ u8 doneflag)
+{
+ struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
+ int ret, tries;
+ u8 ctrl_data = 0;
+
+ sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl,
+ &ret);
+
+ if (ret) {
+ BT_ERR("SDIO write err");
+ return RDWR_STATUS_FAILURE;
+ }
+
+ for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
+ ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
+ &ret);
+
+ if (ret) {
+ BT_ERR("SDIO read err");
+ return RDWR_STATUS_FAILURE;
+ }
+
+ if (ctrl_data == FW_DUMP_DONE)
+ break;
+ if (doneflag && ctrl_data == doneflag)
+ return RDWR_STATUS_DONE;
+ if (ctrl_data != FW_DUMP_HOST_READY) {
+ BT_INFO("The ctrl reg was changed, re-try again!");
+ sdio_writeb(card->func, FW_DUMP_HOST_READY,
+ card->reg->fw_dump_ctrl, &ret);
+ if (ret) {
+ BT_ERR("SDIO write err");
+ return RDWR_STATUS_FAILURE;
+ }
+ }
+ usleep_range(100, 200);
+ }
+
+ if (ctrl_data == FW_DUMP_HOST_READY) {
+ BT_ERR("Fail to pull ctrl_data");
+ return RDWR_STATUS_FAILURE;
+ }
+
+ return RDWR_STATUS_SUCCESS;
+}
+
+/* This function dump sdio register and memory data */
+static void btmrvl_sdio_dump_firmware(struct btmrvl_private *priv)
+{
+ struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
+ int ret = 0;
+ unsigned int reg, reg_start, reg_end;
+ enum rdwr_status stat;
+ u8 *dbg_ptr, *end_ptr, *fw_dump_data, *fw_dump_ptr;
+ u8 dump_num = 0, idx, i, read_reg, doneflag = 0;
+ u32 memory_size, fw_dump_len = 0;
+
+ /* dump sdio register first */
+ btmrvl_sdio_dump_regs(priv);
+
+ if (!card->supports_fw_dump) {
+ BT_ERR("Firmware dump not supported for this card!");
+ return;
+ }
+
+ for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
+ struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
+
+ if (entry->mem_ptr) {
+ vfree(entry->mem_ptr);
+ entry->mem_ptr = NULL;
+ }
+ entry->mem_size = 0;
+ }
+
+ btmrvl_sdio_wakeup_fw(priv);
+ sdio_claim_host(card->func);
+
+ BT_INFO("== btmrvl firmware dump start ==");
+
+ stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
+ if (stat == RDWR_STATUS_FAILURE)
+ goto done;
+
+ reg = card->reg->fw_dump_start;
+ /* Read the number of the memories which will dump */
+ dump_num = sdio_readb(card->func, reg, &ret);
+
+ if (ret) {
+ BT_ERR("SDIO read memory length err");
+ goto done;
+ }
+
+ /* Read the length of every memory which will dump */
+ for (idx = 0; idx < dump_num; idx++) {
+ struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
+
+ stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
+ if (stat == RDWR_STATUS_FAILURE)
+ goto done;
+
+ memory_size = 0;
+ reg = card->reg->fw_dump_start;
+ for (i = 0; i < 4; i++) {
+ read_reg = sdio_readb(card->func, reg, &ret);
+ if (ret) {
+ BT_ERR("SDIO read err");
+ goto done;
+ }
+ memory_size |= (read_reg << i*8);
+ reg++;
+ }
+
+ if (memory_size == 0) {
+ BT_INFO("Firmware dump finished!");
+ sdio_writeb(card->func, FW_DUMP_READ_DONE,
+ card->reg->fw_dump_ctrl, &ret);
+ if (ret) {
+ BT_ERR("SDIO Write MEMDUMP_FINISH ERR");
+ goto done;
+ }
+ break;
+ }
+
+ BT_INFO("%s_SIZE=0x%x", entry->mem_name, memory_size);
+ entry->mem_ptr = vzalloc(memory_size + 1);
+ entry->mem_size = memory_size;
+ if (!entry->mem_ptr) {
+ BT_ERR("Vzalloc %s failed", entry->mem_name);
+ goto done;
+ }
+
+ fw_dump_len += (strlen("========Start dump ") +
+ strlen(entry->mem_name) +
+ strlen("========\n") +
+ (memory_size + 1) +
+ strlen("\n========End dump========\n"));
+
+ dbg_ptr = entry->mem_ptr;
+ end_ptr = dbg_ptr + memory_size;
+
+ doneflag = entry->done_flag;
+ BT_INFO("Start %s output, please wait...",
+ entry->mem_name);
+
+ do {
+ stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
+ if (stat == RDWR_STATUS_FAILURE)
+ goto done;
+
+ reg_start = card->reg->fw_dump_start;
+ reg_end = card->reg->fw_dump_end;
+ for (reg = reg_start; reg <= reg_end; reg++) {
+ *dbg_ptr = sdio_readb(card->func, reg, &ret);
+ if (ret) {
+ BT_ERR("SDIO read err");
+ goto done;
+ }
+ if (dbg_ptr < end_ptr)
+ dbg_ptr++;
+ else
+ BT_ERR("Allocated buffer not enough");
+ }
+
+ if (stat != RDWR_STATUS_DONE) {
+ continue;
+ } else {
+ BT_INFO("%s done: size=0x%tx",
+ entry->mem_name,
+ dbg_ptr - entry->mem_ptr);
+ break;
+ }
+ } while (1);
+ }
+
+ BT_INFO("== btmrvl firmware dump end ==");
+
+done:
+ sdio_release_host(card->func);
+
+ if (fw_dump_len == 0)
+ return;
+
+ fw_dump_data = vzalloc(fw_dump_len+1);
+ if (!fw_dump_data) {
+ BT_ERR("Vzalloc fw_dump_data fail!");
+ return;
+ }
+ fw_dump_ptr = fw_dump_data;
+
+ /* Dump all the memory data into single file, a userspace script will
+ be used to split all the memory data to multiple files*/
+ BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump start");
+ for (idx = 0; idx < dump_num; idx++) {
+ struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
+
+ if (entry->mem_ptr) {
+ strcpy(fw_dump_ptr, "========Start dump ");
+ fw_dump_ptr += strlen("========Start dump ");
+
+ strcpy(fw_dump_ptr, entry->mem_name);
+ fw_dump_ptr += strlen(entry->mem_name);
+
+ strcpy(fw_dump_ptr, "========\n");
+ fw_dump_ptr += strlen("========\n");
+
+ memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
+ fw_dump_ptr += entry->mem_size;
+
+ strcpy(fw_dump_ptr, "\n========End dump========\n");
+ fw_dump_ptr += strlen("\n========End dump========\n");
+
+ vfree(mem_type_mapping_tbl[idx].mem_ptr);
+ mem_type_mapping_tbl[idx].mem_ptr = NULL;
+ }
+ }
+
+ /* fw_dump_data will be free in device coredump release function
+ after 5 min*/
+ dev_coredumpv(&card->func->dev, fw_dump_data, fw_dump_len, GFP_KERNEL);
+ BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump end");
+}
+
+static int btmrvl_sdio_probe(struct sdio_func *func,
+ const struct sdio_device_id *id)
+{
+ int ret = 0;
+ struct btmrvl_private *priv = NULL;
+ struct btmrvl_sdio_card *card = NULL;
+
+ BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
+ id->vendor, id->device, id->class, func->num);
+
+ card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
+ if (!card)
+ return -ENOMEM;
+
+ card->func = func;
+
+ if (id->driver_data) {
+ struct btmrvl_sdio_device *data = (void *) id->driver_data;
+ card->helper = data->helper;
+ card->firmware = data->firmware;
+ card->reg = data->reg;
+ card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
+ card->support_pscan_win_report = data->support_pscan_win_report;
+ card->supports_fw_dump = data->supports_fw_dump;
+ }
+
+ if (btmrvl_sdio_register_dev(card) < 0) {
+ BT_ERR("Failed to register BT device!");
+ return -ENODEV;
+ }
+
+ /* Disable the interrupts on the card */
+ btmrvl_sdio_disable_host_int(card);
+
+ if (btmrvl_sdio_download_fw(card)) {
+ BT_ERR("Downloading firmware failed!");
+ ret = -ENODEV;
+ goto unreg_dev;
+ }
+
+ btmrvl_sdio_enable_host_int(card);
+
+ priv = btmrvl_add_card(card);
+ if (!priv) {
+ BT_ERR("Initializing card failed!");
+ ret = -ENODEV;
+ goto disable_host_int;
+ }
+
+ card->priv = priv;
+
+ /* Initialize the interface specific function pointers */
+ priv->hw_host_to_card = btmrvl_sdio_host_to_card;
+ priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
+ priv->hw_process_int_status = btmrvl_sdio_process_int_status;
+ priv->firmware_dump = btmrvl_sdio_dump_firmware;
+
+ if (btmrvl_register_hdev(priv)) {
+ BT_ERR("Register hdev failed!");
+ ret = -ENODEV;
+ goto disable_host_int;
+ }
+
+ return 0;
+
+disable_host_int:
+ btmrvl_sdio_disable_host_int(card);
+unreg_dev:
+ btmrvl_sdio_unregister_dev(card);
+ return ret;
+}
+
+static void btmrvl_sdio_remove(struct sdio_func *func)
+{
+ struct btmrvl_sdio_card *card;
+
+ if (func) {
+ card = sdio_get_drvdata(func);
+ if (card) {
+ /* Send SHUTDOWN command & disable interrupt
+ * if user removes the module.
+ */
+ if (user_rmmod) {
+ btmrvl_send_module_cfg_cmd(card->priv,
+ MODULE_SHUTDOWN_REQ);
+ btmrvl_sdio_disable_host_int(card);
+ }
+ BT_DBG("unregester dev");
+ card->priv->surprise_removed = true;
+ btmrvl_sdio_unregister_dev(card);
+ btmrvl_remove_card(card->priv);
+ }
+ }
+}
+
+static int btmrvl_sdio_suspend(struct device *dev)
+{
+ struct sdio_func *func = dev_to_sdio_func(dev);
+ struct btmrvl_sdio_card *card;
+ struct btmrvl_private *priv;
+ mmc_pm_flag_t pm_flags;
+ struct hci_dev *hcidev;
+
+ if (func) {
+ pm_flags = sdio_get_host_pm_caps(func);
+ BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
+ pm_flags);
+ if (!(pm_flags & MMC_PM_KEEP_POWER)) {
+ BT_ERR("%s: cannot remain alive while suspended",
+ sdio_func_id(func));
+ return -ENOSYS;
+ }
+ card = sdio_get_drvdata(func);
+ if (!card || !card->priv) {
+ BT_ERR("card or priv structure is not valid");
+ return 0;
+ }
+ } else {
+ BT_ERR("sdio_func is not specified");
+ return 0;
+ }
+
+ priv = card->priv;
+ hcidev = priv->btmrvl_dev.hcidev;
+ BT_DBG("%s: SDIO suspend", hcidev->name);
+ hci_suspend_dev(hcidev);
+ skb_queue_purge(&priv->adapter->tx_queue);
+
+ if (priv->adapter->hs_state != HS_ACTIVATED) {
+ if (btmrvl_enable_hs(priv)) {
+ BT_ERR("HS not actived, suspend failed!");
+ return -EBUSY;
+ }
+ }
+
+ priv->adapter->is_suspended = true;
+
+ /* We will keep the power when hs enabled successfully */
+ if (priv->adapter->hs_state == HS_ACTIVATED) {
+ BT_DBG("suspend with MMC_PM_KEEP_POWER");
+ return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
+ } else {
+ BT_DBG("suspend without MMC_PM_KEEP_POWER");
+ return 0;
+ }
+}
+
+static int btmrvl_sdio_resume(struct device *dev)
+{
+ struct sdio_func *func = dev_to_sdio_func(dev);
+ struct btmrvl_sdio_card *card;
+ struct btmrvl_private *priv;
+ mmc_pm_flag_t pm_flags;
+ struct hci_dev *hcidev;
+
+ if (func) {
+ pm_flags = sdio_get_host_pm_caps(func);
+ BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
+ pm_flags);
+ card = sdio_get_drvdata(func);
+ if (!card || !card->priv) {
+ BT_ERR("card or priv structure is not valid");
+ return 0;
+ }
+ } else {
+ BT_ERR("sdio_func is not specified");
+ return 0;
+ }
+ priv = card->priv;
+
+ if (!priv->adapter->is_suspended) {
+ BT_DBG("device already resumed");
+ return 0;
+ }
+
+ priv->hw_wakeup_firmware(priv);
+ priv->adapter->hs_state = HS_DEACTIVATED;
+ hcidev = priv->btmrvl_dev.hcidev;
+ BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
+ priv->adapter->is_suspended = false;
+ BT_DBG("%s: SDIO resume", hcidev->name);
+ hci_resume_dev(hcidev);
+
+ return 0;
+}
+
+static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
+ .suspend = btmrvl_sdio_suspend,
+ .resume = btmrvl_sdio_resume,
+};
+
+static struct sdio_driver bt_mrvl_sdio = {
+ .name = "btmrvl_sdio",
+ .id_table = btmrvl_sdio_ids,
+ .probe = btmrvl_sdio_probe,
+ .remove = btmrvl_sdio_remove,
+ .drv = {
+ .owner = THIS_MODULE,
+ .pm = &btmrvl_sdio_pm_ops,
+ }
+};
+
+static int __init btmrvl_sdio_init_module(void)
+{
+ if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
+ BT_ERR("SDIO Driver Registration Failed");
+ return -ENODEV;
+ }
+
+ /* Clear the flag in case user removes the card. */
+ user_rmmod = 0;
+
+ return 0;
+}
+
+static void __exit btmrvl_sdio_exit_module(void)
+{
+ /* Set the flag as user is removing this module. */
+ user_rmmod = 1;
+
+ sdio_unregister_driver(&bt_mrvl_sdio);
+}
+
+module_init(btmrvl_sdio_init_module);
+module_exit(btmrvl_sdio_exit_module);
+
+MODULE_AUTHOR("Marvell International Ltd.");
+MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL v2");
+MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
+MODULE_FIRMWARE("mrvl/sd8688.bin");
+MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
+MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
+MODULE_FIRMWARE("mrvl/sd8887_uapsta.bin");
+MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");
+MODULE_FIRMWARE("mrvl/sd8997_uapsta.bin");
diff --git a/drivers/bluetooth/btmrvl_sdio.h b/drivers/bluetooth/btmrvl_sdio.h
new file mode 100644
index 0000000..1a3bd06
--- /dev/null
+++ b/drivers/bluetooth/btmrvl_sdio.h
@@ -0,0 +1,122 @@
+/**
+ * Marvell BT-over-SDIO driver: SDIO interface related definitions
+ *
+ * Copyright (C) 2009, Marvell International Ltd.
+ *
+ * This software file (the "File") is distributed by Marvell International
+ * Ltd. under the terms of the GNU General Public License Version 2, June 1991
+ * (the "License"). You may use, redistribute and/or modify this File in
+ * accordance with the terms and conditions of the License, a copy of which
+ * is available by writing to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
+ * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
+ *
+ *
+ * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
+ * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
+ * this warranty disclaimer.
+ *
+ **/
+
+#define SDIO_HEADER_LEN 4
+
+/* SD block size can not bigger than 64 due to buf size limit in firmware */
+/* define SD block size for data Tx/Rx */
+#define SDIO_BLOCK_SIZE 64
+
+/* Number of blocks for firmware transfer */
+#define FIRMWARE_TRANSFER_NBLOCK 2
+
+/* This is for firmware specific length */
+#define FW_EXTRA_LEN 36
+
+#define MRVDRV_SIZE_OF_CMD_BUFFER (2 * 1024)
+
+#define MRVDRV_BT_RX_PACKET_BUFFER_SIZE \
+ (HCI_MAX_FRAME_SIZE + FW_EXTRA_LEN)
+
+#define ALLOC_BUF_SIZE (((max_t (int, MRVDRV_BT_RX_PACKET_BUFFER_SIZE, \
+ MRVDRV_SIZE_OF_CMD_BUFFER) + SDIO_HEADER_LEN \
+ + SDIO_BLOCK_SIZE - 1) / SDIO_BLOCK_SIZE) \
+ * SDIO_BLOCK_SIZE)
+
+/* The number of times to try when polling for status */
+#define MAX_POLL_TRIES 100
+
+/* Max retry number of CMD53 write */
+#define MAX_WRITE_IOMEM_RETRY 2
+
+/* register bitmasks */
+#define HOST_POWER_UP BIT(1)
+#define HOST_CMD53_FIN BIT(2)
+
+#define HIM_DISABLE 0xff
+#define HIM_ENABLE (BIT(0) | BIT(1))
+
+#define UP_LD_HOST_INT_STATUS BIT(0)
+#define DN_LD_HOST_INT_STATUS BIT(1)
+
+#define DN_LD_CARD_RDY BIT(0)
+#define CARD_IO_READY BIT(3)
+
+#define FIRMWARE_READY 0xfedc
+
+
+struct btmrvl_sdio_card_reg {
+ u8 cfg;
+ u8 host_int_mask;
+ u8 host_intstatus;
+ u8 card_status;
+ u8 sq_read_base_addr_a0;
+ u8 sq_read_base_addr_a1;
+ u8 card_revision;
+ u8 card_fw_status0;
+ u8 card_fw_status1;
+ u8 card_rx_len;
+ u8 card_rx_unit;
+ u8 io_port_0;
+ u8 io_port_1;
+ u8 io_port_2;
+ bool int_read_to_clear;
+ u8 host_int_rsr;
+ u8 card_misc_cfg;
+ u8 fw_dump_ctrl;
+ u8 fw_dump_start;
+ u8 fw_dump_end;
+};
+
+struct btmrvl_sdio_card {
+ struct sdio_func *func;
+ u32 ioport;
+ const char *helper;
+ const char *firmware;
+ const struct btmrvl_sdio_card_reg *reg;
+ bool support_pscan_win_report;
+ bool supports_fw_dump;
+ u16 sd_blksz_fw_dl;
+ u8 rx_unit;
+ struct btmrvl_private *priv;
+};
+
+struct btmrvl_sdio_device {
+ const char *helper;
+ const char *firmware;
+ const struct btmrvl_sdio_card_reg *reg;
+ const bool support_pscan_win_report;
+ u16 sd_blksz_fw_dl;
+ bool supports_fw_dump;
+};
+
+
+/* Platform specific DMA alignment */
+#define BTSDIO_DMA_ALIGN 8
+
+/* Macros for Data Alignment : size */
+#define ALIGN_SZ(p, a) \
+ (((p) + ((a) - 1)) & ~((a) - 1))
+
+/* Macros for Data Alignment : address */
+#define ALIGN_ADDR(p, a) \
+ ((((unsigned long)(p)) + (((unsigned long)(a)) - 1)) & \
+ ~(((unsigned long)(a)) - 1))
diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
new file mode 100644
index 0000000..4a62081
--- /dev/null
+++ b/drivers/bluetooth/btqca.c
@@ -0,0 +1,392 @@
+/*
+ * Bluetooth supports for Qualcomm Atheros chips
+ *
+ * Copyright (c) 2015 The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+#include <linux/module.h>
+#include <linux/firmware.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btqca.h"
+
+#define VERSION "0.1"
+
+static int rome_patch_ver_req(struct hci_dev *hdev, u32 *rome_version)
+{
+ struct sk_buff *skb;
+ struct edl_event_hdr *edl;
+ struct rome_version *ver;
+ char cmd;
+ int err = 0;
+
+ BT_DBG("%s: ROME Patch Version Request", hdev->name);
+
+ cmd = EDL_PATCH_VER_REQ_CMD;
+ skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
+ &cmd, HCI_VENDOR_PKT, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: Failed to read version of ROME (%d)", hdev->name,
+ err);
+ return err;
+ }
+
+ if (skb->len != sizeof(*edl) + sizeof(*ver)) {
+ BT_ERR("%s: Version size mismatch len %d", hdev->name,
+ skb->len);
+ err = -EILSEQ;
+ goto out;
+ }
+
+ edl = (struct edl_event_hdr *)(skb->data);
+ if (!edl || !edl->data) {
+ BT_ERR("%s: TLV with no header or no data", hdev->name);
+ err = -EILSEQ;
+ goto out;
+ }
+
+ if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
+ edl->rtype != EDL_APP_VER_RES_EVT) {
+ BT_ERR("%s: Wrong packet received %d %d", hdev->name,
+ edl->cresp, edl->rtype);
+ err = -EIO;
+ goto out;
+ }
+
+ ver = (struct rome_version *)(edl->data);
+
+ BT_DBG("%s: Product:0x%08x", hdev->name, le32_to_cpu(ver->product_id));
+ BT_DBG("%s: Patch :0x%08x", hdev->name, le16_to_cpu(ver->patch_ver));
+ BT_DBG("%s: ROM :0x%08x", hdev->name, le16_to_cpu(ver->rome_ver));
+ BT_DBG("%s: SOC :0x%08x", hdev->name, le32_to_cpu(ver->soc_id));
+
+ /* ROME chipset version can be decided by patch and SoC
+ * version, combination with upper 2 bytes from SoC
+ * and lower 2 bytes from patch will be used.
+ */
+ *rome_version = (le32_to_cpu(ver->soc_id) << 16) |
+ (le16_to_cpu(ver->rome_ver) & 0x0000ffff);
+
+out:
+ kfree_skb(skb);
+
+ return err;
+}
+
+static int rome_reset(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ int err;
+
+ BT_DBG("%s: ROME HCI_RESET", hdev->name);
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: Reset failed (%d)", hdev->name, err);
+ return err;
+ }
+
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static void rome_tlv_check_data(struct rome_config *config,
+ const struct firmware *fw)
+{
+ const u8 *data;
+ u32 type_len;
+ u16 tag_id, tag_len;
+ int idx, length;
+ struct tlv_type_hdr *tlv;
+ struct tlv_type_patch *tlv_patch;
+ struct tlv_type_nvm *tlv_nvm;
+
+ tlv = (struct tlv_type_hdr *)fw->data;
+
+ type_len = le32_to_cpu(tlv->type_len);
+ length = (type_len >> 8) & 0x00ffffff;
+
+ BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
+ BT_DBG("Length\t\t : %d bytes", length);
+
+ switch (config->type) {
+ case TLV_TYPE_PATCH:
+ tlv_patch = (struct tlv_type_patch *)tlv->data;
+ BT_DBG("Total Length\t\t : %d bytes",
+ le32_to_cpu(tlv_patch->total_size));
+ BT_DBG("Patch Data Length\t : %d bytes",
+ le32_to_cpu(tlv_patch->data_length));
+ BT_DBG("Signing Format Version : 0x%x",
+ tlv_patch->format_version);
+ BT_DBG("Signature Algorithm\t : 0x%x",
+ tlv_patch->signature);
+ BT_DBG("Reserved\t\t : 0x%x",
+ le16_to_cpu(tlv_patch->reserved1));
+ BT_DBG("Product ID\t\t : 0x%04x",
+ le16_to_cpu(tlv_patch->product_id));
+ BT_DBG("Rom Build Version\t : 0x%04x",
+ le16_to_cpu(tlv_patch->rom_build));
+ BT_DBG("Patch Version\t\t : 0x%04x",
+ le16_to_cpu(tlv_patch->patch_version));
+ BT_DBG("Reserved\t\t : 0x%x",
+ le16_to_cpu(tlv_patch->reserved2));
+ BT_DBG("Patch Entry Address\t : 0x%x",
+ le32_to_cpu(tlv_patch->entry));
+ break;
+
+ case TLV_TYPE_NVM:
+ idx = 0;
+ data = tlv->data;
+ while (idx < length) {
+ tlv_nvm = (struct tlv_type_nvm *)(data + idx);
+
+ tag_id = le16_to_cpu(tlv_nvm->tag_id);
+ tag_len = le16_to_cpu(tlv_nvm->tag_len);
+
+ /* Update NVM tags as needed */
+ switch (tag_id) {
+ case EDL_TAG_ID_HCI:
+ /* HCI transport layer parameters
+ * enabling software inband sleep
+ * onto controller side.
+ */
+ tlv_nvm->data[0] |= 0x80;
+
+ /* UART Baud Rate */
+ tlv_nvm->data[2] = config->user_baud_rate;
+
+ break;
+
+ case EDL_TAG_ID_DEEP_SLEEP:
+ /* Sleep enable mask
+ * enabling deep sleep feature on controller.
+ */
+ tlv_nvm->data[0] |= 0x01;
+
+ break;
+ }
+
+ idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
+ }
+ break;
+
+ default:
+ BT_ERR("Unknown TLV type %d", config->type);
+ break;
+ }
+}
+
+static int rome_tlv_send_segment(struct hci_dev *hdev, int idx, int seg_size,
+ const u8 *data)
+{
+ struct sk_buff *skb;
+ struct edl_event_hdr *edl;
+ struct tlv_seg_resp *tlv_resp;
+ u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
+ int err = 0;
+
+ BT_DBG("%s: Download segment #%d size %d", hdev->name, idx, seg_size);
+
+ cmd[0] = EDL_PATCH_TLV_REQ_CMD;
+ cmd[1] = seg_size;
+ memcpy(cmd + 2, data, seg_size);
+
+ skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
+ HCI_VENDOR_PKT, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: Failed to send TLV segment (%d)", hdev->name, err);
+ return err;
+ }
+
+ if (skb->len != sizeof(*edl) + sizeof(*tlv_resp)) {
+ BT_ERR("%s: TLV response size mismatch", hdev->name);
+ err = -EILSEQ;
+ goto out;
+ }
+
+ edl = (struct edl_event_hdr *)(skb->data);
+ if (!edl || !edl->data) {
+ BT_ERR("%s: TLV with no header or no data", hdev->name);
+ err = -EILSEQ;
+ goto out;
+ }
+
+ tlv_resp = (struct tlv_seg_resp *)(edl->data);
+
+ if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
+ edl->rtype != EDL_TVL_DNLD_RES_EVT || tlv_resp->result != 0x00) {
+ BT_ERR("%s: TLV with error stat 0x%x rtype 0x%x (0x%x)",
+ hdev->name, edl->cresp, edl->rtype, tlv_resp->result);
+ err = -EIO;
+ }
+
+out:
+ kfree_skb(skb);
+
+ return err;
+}
+
+static int rome_tlv_download_request(struct hci_dev *hdev,
+ const struct firmware *fw)
+{
+ const u8 *buffer, *data;
+ int total_segment, remain_size;
+ int ret, i;
+
+ if (!fw || !fw->data)
+ return -EINVAL;
+
+ total_segment = fw->size / MAX_SIZE_PER_TLV_SEGMENT;
+ remain_size = fw->size % MAX_SIZE_PER_TLV_SEGMENT;
+
+ BT_DBG("%s: Total segment num %d remain size %d total size %zu",
+ hdev->name, total_segment, remain_size, fw->size);
+
+ data = fw->data;
+ for (i = 0; i < total_segment; i++) {
+ buffer = data + i * MAX_SIZE_PER_TLV_SEGMENT;
+ ret = rome_tlv_send_segment(hdev, i, MAX_SIZE_PER_TLV_SEGMENT,
+ buffer);
+ if (ret < 0)
+ return -EIO;
+ }
+
+ if (remain_size) {
+ buffer = data + total_segment * MAX_SIZE_PER_TLV_SEGMENT;
+ ret = rome_tlv_send_segment(hdev, total_segment, remain_size,
+ buffer);
+ if (ret < 0)
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int rome_download_firmware(struct hci_dev *hdev,
+ struct rome_config *config)
+{
+ const struct firmware *fw;
+ int ret;
+
+ BT_INFO("%s: ROME Downloading %s", hdev->name, config->fwname);
+
+ ret = request_firmware(&fw, config->fwname, &hdev->dev);
+ if (ret) {
+ BT_ERR("%s: Failed to request file: %s (%d)", hdev->name,
+ config->fwname, ret);
+ return ret;
+ }
+
+ rome_tlv_check_data(config, fw);
+
+ ret = rome_tlv_download_request(hdev, fw);
+ if (ret) {
+ BT_ERR("%s: Failed to download file: %s (%d)", hdev->name,
+ config->fwname, ret);
+ }
+
+ release_firmware(fw);
+
+ return ret;
+}
+
+int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+ struct sk_buff *skb;
+ u8 cmd[9];
+ int err;
+
+ cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
+ cmd[1] = 0x02; /* TAG ID */
+ cmd[2] = sizeof(bdaddr_t); /* size */
+ memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
+ skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
+ HCI_VENDOR_PKT, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: Change address command failed (%d)",
+ hdev->name, err);
+ return err;
+ }
+
+ kfree_skb(skb);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
+
+int qca_uart_setup_rome(struct hci_dev *hdev, uint8_t baudrate)
+{
+ u32 rome_ver = 0;
+ struct rome_config config;
+ int err;
+
+ BT_DBG("%s: ROME setup on UART", hdev->name);
+
+ config.user_baud_rate = baudrate;
+
+ /* Get ROME version information */
+ err = rome_patch_ver_req(hdev, &rome_ver);
+ if (err < 0 || rome_ver == 0) {
+ BT_ERR("%s: Failed to get version 0x%x", hdev->name, err);
+ return err;
+ }
+
+ BT_INFO("%s: ROME controller version 0x%08x", hdev->name, rome_ver);
+
+ /* Download rampatch file */
+ config.type = TLV_TYPE_PATCH;
+ snprintf(config.fwname, sizeof(config.fwname), "qca/rampatch_%08x.bin",
+ rome_ver);
+ err = rome_download_firmware(hdev, &config);
+ if (err < 0) {
+ BT_ERR("%s: Failed to download patch (%d)", hdev->name, err);
+ return err;
+ }
+
+ /* Download NVM configuration */
+ config.type = TLV_TYPE_NVM;
+ snprintf(config.fwname, sizeof(config.fwname), "qca/nvm_%08x.bin",
+ rome_ver);
+ err = rome_download_firmware(hdev, &config);
+ if (err < 0) {
+ BT_ERR("%s: Failed to download NVM (%d)", hdev->name, err);
+ return err;
+ }
+
+ /* Perform HCI reset */
+ err = rome_reset(hdev);
+ if (err < 0) {
+ BT_ERR("%s: Failed to run HCI_RESET (%d)", hdev->name, err);
+ return err;
+ }
+
+ BT_INFO("%s: ROME setup on UART is completed", hdev->name);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(qca_uart_setup_rome);
+
+MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
+MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
diff --git a/drivers/bluetooth/btqca.h b/drivers/bluetooth/btqca.h
new file mode 100644
index 0000000..65e994b
--- /dev/null
+++ b/drivers/bluetooth/btqca.h
@@ -0,0 +1,135 @@
+/*
+ * Bluetooth supports for Qualcomm Atheros ROME chips
+ *
+ * Copyright (c) 2015 The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#define EDL_PATCH_CMD_OPCODE (0xFC00)
+#define EDL_NVM_ACCESS_OPCODE (0xFC0B)
+#define EDL_PATCH_CMD_LEN (1)
+#define EDL_PATCH_VER_REQ_CMD (0x19)
+#define EDL_PATCH_TLV_REQ_CMD (0x1E)
+#define EDL_NVM_ACCESS_SET_REQ_CMD (0x01)
+#define MAX_SIZE_PER_TLV_SEGMENT (243)
+
+#define EDL_CMD_REQ_RES_EVT (0x00)
+#define EDL_PATCH_VER_RES_EVT (0x19)
+#define EDL_APP_VER_RES_EVT (0x02)
+#define EDL_TVL_DNLD_RES_EVT (0x04)
+#define EDL_CMD_EXE_STATUS_EVT (0x00)
+#define EDL_SET_BAUDRATE_RSP_EVT (0x92)
+#define EDL_NVM_ACCESS_CODE_EVT (0x0B)
+
+#define EDL_TAG_ID_HCI (17)
+#define EDL_TAG_ID_DEEP_SLEEP (27)
+
+enum qca_bardrate {
+ QCA_BAUDRATE_115200 = 0,
+ QCA_BAUDRATE_57600,
+ QCA_BAUDRATE_38400,
+ QCA_BAUDRATE_19200,
+ QCA_BAUDRATE_9600,
+ QCA_BAUDRATE_230400,
+ QCA_BAUDRATE_250000,
+ QCA_BAUDRATE_460800,
+ QCA_BAUDRATE_500000,
+ QCA_BAUDRATE_720000,
+ QCA_BAUDRATE_921600,
+ QCA_BAUDRATE_1000000,
+ QCA_BAUDRATE_1250000,
+ QCA_BAUDRATE_2000000,
+ QCA_BAUDRATE_3000000,
+ QCA_BAUDRATE_4000000,
+ QCA_BAUDRATE_1600000,
+ QCA_BAUDRATE_3200000,
+ QCA_BAUDRATE_3500000,
+ QCA_BAUDRATE_AUTO = 0xFE,
+ QCA_BAUDRATE_RESERVED
+};
+
+enum rome_tlv_type {
+ TLV_TYPE_PATCH = 1,
+ TLV_TYPE_NVM
+};
+
+struct rome_config {
+ u8 type;
+ char fwname[64];
+ uint8_t user_baud_rate;
+};
+
+struct edl_event_hdr {
+ __u8 cresp;
+ __u8 rtype;
+ __u8 data[0];
+} __packed;
+
+struct rome_version {
+ __le32 product_id;
+ __le16 patch_ver;
+ __le16 rome_ver;
+ __le32 soc_id;
+} __packed;
+
+struct tlv_seg_resp {
+ __u8 result;
+} __packed;
+
+struct tlv_type_patch {
+ __le32 total_size;
+ __le32 data_length;
+ __u8 format_version;
+ __u8 signature;
+ __le16 reserved1;
+ __le16 product_id;
+ __le16 rom_build;
+ __le16 patch_version;
+ __le16 reserved2;
+ __le32 entry;
+} __packed;
+
+struct tlv_type_nvm {
+ __le16 tag_id;
+ __le16 tag_len;
+ __le32 reserve1;
+ __le32 reserve2;
+ __u8 data[0];
+} __packed;
+
+struct tlv_type_hdr {
+ __le32 type_len;
+ __u8 data[0];
+} __packed;
+
+#if IS_ENABLED(CONFIG_BT_QCA)
+
+int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr);
+int qca_uart_setup_rome(struct hci_dev *hdev, uint8_t baudrate);
+
+#else
+
+static inline int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int qca_uart_setup_rome(struct hci_dev *hdev, int speed)
+{
+ return -EOPNOTSUPP;
+}
+
+#endif
diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
new file mode 100644
index 0000000..8428893
--- /dev/null
+++ b/drivers/bluetooth/btrtl.c
@@ -0,0 +1,390 @@
+/*
+ * Bluetooth support for Realtek devices
+ *
+ * Copyright (C) 2015 Endless Mobile, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/firmware.h>
+#include <asm/unaligned.h>
+#include <linux/usb.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btrtl.h"
+
+#define VERSION "0.1"
+
+#define RTL_EPATCH_SIGNATURE "Realtech"
+#define RTL_ROM_LMP_3499 0x3499
+#define RTL_ROM_LMP_8723A 0x1200
+#define RTL_ROM_LMP_8723B 0x8723
+#define RTL_ROM_LMP_8821A 0x8821
+#define RTL_ROM_LMP_8761A 0x8761
+
+static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version)
+{
+ struct rtl_rom_version_evt *rom_version;
+ struct sk_buff *skb;
+
+ /* Read RTL ROM version command */
+ skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s: Read ROM version failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+
+ if (skb->len != sizeof(*rom_version)) {
+ BT_ERR("%s: RTL version event length mismatch", hdev->name);
+ kfree_skb(skb);
+ return -EIO;
+ }
+
+ rom_version = (struct rtl_rom_version_evt *)skb->data;
+ BT_INFO("%s: rom_version status=%x version=%x",
+ hdev->name, rom_version->status, rom_version->version);
+
+ *version = rom_version->version;
+
+ kfree_skb(skb);
+ return 0;
+}
+
+static int rtl8723b_parse_firmware(struct hci_dev *hdev, u16 lmp_subver,
+ const struct firmware *fw,
+ unsigned char **_buf)
+{
+ const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 };
+ struct rtl_epatch_header *epatch_info;
+ unsigned char *buf;
+ int i, ret, len;
+ size_t min_size;
+ u8 opcode, length, data, rom_version = 0;
+ int project_id = -1;
+ const unsigned char *fwptr, *chip_id_base;
+ const unsigned char *patch_length_base, *patch_offset_base;
+ u32 patch_offset = 0;
+ u16 patch_length, num_patches;
+ const u16 project_id_to_lmp_subver[] = {
+ RTL_ROM_LMP_8723A,
+ RTL_ROM_LMP_8723B,
+ RTL_ROM_LMP_8821A,
+ RTL_ROM_LMP_8761A
+ };
+
+ ret = rtl_read_rom_version(hdev, &rom_version);
+ if (ret)
+ return ret;
+
+ min_size = sizeof(struct rtl_epatch_header) + sizeof(extension_sig) + 3;
+ if (fw->size < min_size)
+ return -EINVAL;
+
+ fwptr = fw->data + fw->size - sizeof(extension_sig);
+ if (memcmp(fwptr, extension_sig, sizeof(extension_sig)) != 0) {
+ BT_ERR("%s: extension section signature mismatch", hdev->name);
+ return -EINVAL;
+ }
+
+ /* Loop from the end of the firmware parsing instructions, until
+ * we find an instruction that identifies the "project ID" for the
+ * hardware supported by this firwmare file.
+ * Once we have that, we double-check that that project_id is suitable
+ * for the hardware we are working with.
+ */
+ while (fwptr >= fw->data + (sizeof(struct rtl_epatch_header) + 3)) {
+ opcode = *--fwptr;
+ length = *--fwptr;
+ data = *--fwptr;
+
+ BT_DBG("check op=%x len=%x data=%x", opcode, length, data);
+
+ if (opcode == 0xff) /* EOF */
+ break;
+
+ if (length == 0) {
+ BT_ERR("%s: found instruction with length 0",
+ hdev->name);
+ return -EINVAL;
+ }
+
+ if (opcode == 0 && length == 1) {
+ project_id = data;
+ break;
+ }
+
+ fwptr -= length;
+ }
+
+ if (project_id < 0) {
+ BT_ERR("%s: failed to find version instruction", hdev->name);
+ return -EINVAL;
+ }
+
+ if (project_id >= ARRAY_SIZE(project_id_to_lmp_subver)) {
+ BT_ERR("%s: unknown project id %d", hdev->name, project_id);
+ return -EINVAL;
+ }
+
+ if (lmp_subver != project_id_to_lmp_subver[project_id]) {
+ BT_ERR("%s: firmware is for %x but this is a %x", hdev->name,
+ project_id_to_lmp_subver[project_id], lmp_subver);
+ return -EINVAL;
+ }
+
+ epatch_info = (struct rtl_epatch_header *)fw->data;
+ if (memcmp(epatch_info->signature, RTL_EPATCH_SIGNATURE, 8) != 0) {
+ BT_ERR("%s: bad EPATCH signature", hdev->name);
+ return -EINVAL;
+ }
+
+ num_patches = le16_to_cpu(epatch_info->num_patches);
+ BT_DBG("fw_version=%x, num_patches=%d",
+ le32_to_cpu(epatch_info->fw_version), num_patches);
+
+ /* After the rtl_epatch_header there is a funky patch metadata section.
+ * Assuming 2 patches, the layout is:
+ * ChipID1 ChipID2 PatchLength1 PatchLength2 PatchOffset1 PatchOffset2
+ *
+ * Find the right patch for this chip.
+ */
+ min_size += 8 * num_patches;
+ if (fw->size < min_size)
+ return -EINVAL;
+
+ chip_id_base = fw->data + sizeof(struct rtl_epatch_header);
+ patch_length_base = chip_id_base + (sizeof(u16) * num_patches);
+ patch_offset_base = patch_length_base + (sizeof(u16) * num_patches);
+ for (i = 0; i < num_patches; i++) {
+ u16 chip_id = get_unaligned_le16(chip_id_base +
+ (i * sizeof(u16)));
+ if (chip_id == rom_version + 1) {
+ patch_length = get_unaligned_le16(patch_length_base +
+ (i * sizeof(u16)));
+ patch_offset = get_unaligned_le32(patch_offset_base +
+ (i * sizeof(u32)));
+ break;
+ }
+ }
+
+ if (!patch_offset) {
+ BT_ERR("%s: didn't find patch for chip id %d",
+ hdev->name, rom_version);
+ return -EINVAL;
+ }
+
+ BT_DBG("length=%x offset=%x index %d", patch_length, patch_offset, i);
+ min_size = patch_offset + patch_length;
+ if (fw->size < min_size)
+ return -EINVAL;
+
+ /* Copy the firmware into a new buffer and write the version at
+ * the end.
+ */
+ len = patch_length;
+ buf = kmemdup(fw->data + patch_offset, patch_length, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ memcpy(buf + patch_length - 4, &epatch_info->fw_version, 4);
+
+ *_buf = buf;
+ return len;
+}
+
+static int rtl_download_firmware(struct hci_dev *hdev,
+ const unsigned char *data, int fw_len)
+{
+ struct rtl_download_cmd *dl_cmd;
+ int frag_num = fw_len / RTL_FRAG_LEN + 1;
+ int frag_len = RTL_FRAG_LEN;
+ int ret = 0;
+ int i;
+
+ dl_cmd = kmalloc(sizeof(struct rtl_download_cmd), GFP_KERNEL);
+ if (!dl_cmd)
+ return -ENOMEM;
+
+ for (i = 0; i < frag_num; i++) {
+ struct sk_buff *skb;
+
+ BT_DBG("download fw (%d/%d)", i, frag_num);
+
+ dl_cmd->index = i;
+ if (i == (frag_num - 1)) {
+ dl_cmd->index |= 0x80; /* data end */
+ frag_len = fw_len % RTL_FRAG_LEN;
+ }
+ memcpy(dl_cmd->data, data, frag_len);
+
+ /* Send download command */
+ skb = __hci_cmd_sync(hdev, 0xfc20, frag_len + 1, dl_cmd,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s: download fw command failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ ret = -PTR_ERR(skb);
+ goto out;
+ }
+
+ if (skb->len != sizeof(struct rtl_download_response)) {
+ BT_ERR("%s: download fw event length mismatch",
+ hdev->name);
+ kfree_skb(skb);
+ ret = -EIO;
+ goto out;
+ }
+
+ kfree_skb(skb);
+ data += RTL_FRAG_LEN;
+ }
+
+out:
+ kfree(dl_cmd);
+ return ret;
+}
+
+static int btrtl_setup_rtl8723a(struct hci_dev *hdev)
+{
+ const struct firmware *fw;
+ int ret;
+
+ BT_INFO("%s: rtl: loading rtl_bt/rtl8723a_fw.bin", hdev->name);
+ ret = request_firmware(&fw, "rtl_bt/rtl8723a_fw.bin", &hdev->dev);
+ if (ret < 0) {
+ BT_ERR("%s: Failed to load rtl_bt/rtl8723a_fw.bin", hdev->name);
+ return ret;
+ }
+
+ if (fw->size < 8) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* Check that the firmware doesn't have the epatch signature
+ * (which is only for RTL8723B and newer).
+ */
+ if (!memcmp(fw->data, RTL_EPATCH_SIGNATURE, 8)) {
+ BT_ERR("%s: unexpected EPATCH signature!", hdev->name);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = rtl_download_firmware(hdev, fw->data, fw->size);
+
+out:
+ release_firmware(fw);
+ return ret;
+}
+
+static int btrtl_setup_rtl8723b(struct hci_dev *hdev, u16 lmp_subver,
+ const char *fw_name)
+{
+ unsigned char *fw_data = NULL;
+ const struct firmware *fw;
+ int ret;
+
+ BT_INFO("%s: rtl: loading %s", hdev->name, fw_name);
+ ret = request_firmware(&fw, fw_name, &hdev->dev);
+ if (ret < 0) {
+ BT_ERR("%s: Failed to load %s", hdev->name, fw_name);
+ return ret;
+ }
+
+ ret = rtl8723b_parse_firmware(hdev, lmp_subver, fw, &fw_data);
+ if (ret < 0)
+ goto out;
+
+ ret = rtl_download_firmware(hdev, fw_data, ret);
+ kfree(fw_data);
+ if (ret < 0)
+ goto out;
+
+out:
+ release_firmware(fw);
+ return ret;
+}
+
+static struct sk_buff *btrtl_read_local_version(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return skb;
+ }
+
+ if (skb->len != sizeof(struct hci_rp_read_local_version)) {
+ BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
+ hdev->name);
+ kfree_skb(skb);
+ return ERR_PTR(-EIO);
+ }
+
+ return skb;
+}
+
+int btrtl_setup_realtek(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ struct hci_rp_read_local_version *resp;
+ u16 lmp_subver;
+
+ skb = btrtl_read_local_version(hdev);
+ if (IS_ERR(skb))
+ return -PTR_ERR(skb);
+
+ resp = (struct hci_rp_read_local_version *)skb->data;
+ BT_INFO("%s: rtl: examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
+ "lmp_subver=%04x", hdev->name, resp->hci_ver, resp->hci_rev,
+ resp->lmp_ver, resp->lmp_subver);
+
+ lmp_subver = le16_to_cpu(resp->lmp_subver);
+ kfree_skb(skb);
+
+ /* Match a set of subver values that correspond to stock firmware,
+ * which is not compatible with standard btusb.
+ * If matched, upload an alternative firmware that does conform to
+ * standard btusb. Once that firmware is uploaded, the subver changes
+ * to a different value.
+ */
+ switch (lmp_subver) {
+ case RTL_ROM_LMP_8723A:
+ case RTL_ROM_LMP_3499:
+ return btrtl_setup_rtl8723a(hdev);
+ case RTL_ROM_LMP_8723B:
+ return btrtl_setup_rtl8723b(hdev, lmp_subver,
+ "rtl_bt/rtl8723b_fw.bin");
+ case RTL_ROM_LMP_8821A:
+ return btrtl_setup_rtl8723b(hdev, lmp_subver,
+ "rtl_bt/rtl8821a_fw.bin");
+ case RTL_ROM_LMP_8761A:
+ return btrtl_setup_rtl8723b(hdev, lmp_subver,
+ "rtl_bt/rtl8761a_fw.bin");
+ default:
+ BT_INFO("rtl: assuming no firmware upload needed.");
+ return 0;
+ }
+}
+EXPORT_SYMBOL_GPL(btrtl_setup_realtek);
+
+MODULE_AUTHOR("Daniel Drake <drake@endlessm.com>");
+MODULE_DESCRIPTION("Bluetooth support for Realtek devices ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
diff --git a/drivers/bluetooth/btrtl.h b/drivers/bluetooth/btrtl.h
new file mode 100644
index 0000000..38ffe48
--- /dev/null
+++ b/drivers/bluetooth/btrtl.h
@@ -0,0 +1,52 @@
+/*
+ * Bluetooth support for Realtek devices
+ *
+ * Copyright (C) 2015 Endless Mobile, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#define RTL_FRAG_LEN 252
+
+struct rtl_download_cmd {
+ __u8 index;
+ __u8 data[RTL_FRAG_LEN];
+} __packed;
+
+struct rtl_download_response {
+ __u8 status;
+ __u8 index;
+} __packed;
+
+struct rtl_rom_version_evt {
+ __u8 status;
+ __u8 version;
+} __packed;
+
+struct rtl_epatch_header {
+ __u8 signature[8];
+ __le32 fw_version;
+ __le16 num_patches;
+} __packed;
+
+#if IS_ENABLED(CONFIG_BT_RTL)
+
+int btrtl_setup_realtek(struct hci_dev *hdev);
+
+#else
+
+static inline int btrtl_setup_realtek(struct hci_dev *hdev)
+{
+ return -EOPNOTSUPP;
+}
+
+#endif
diff --git a/drivers/bluetooth/btsdio.c b/drivers/bluetooth/btsdio.c
new file mode 100644
index 0000000..7b62442
--- /dev/null
+++ b/drivers/bluetooth/btsdio.c
@@ -0,0 +1,383 @@
+/*
+ *
+ * Generic Bluetooth SDIO driver
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ * Copyright (C) 2007 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/skbuff.h>
+
+#include <linux/mmc/sdio_ids.h>
+#include <linux/mmc/sdio_func.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#define VERSION "0.1"
+
+static const struct sdio_device_id btsdio_table[] = {
+ /* Generic Bluetooth Type-A SDIO device */
+ { SDIO_DEVICE_CLASS(SDIO_CLASS_BT_A) },
+
+ /* Generic Bluetooth Type-B SDIO device */
+ { SDIO_DEVICE_CLASS(SDIO_CLASS_BT_B) },
+
+ /* Generic Bluetooth AMP controller */
+ { SDIO_DEVICE_CLASS(SDIO_CLASS_BT_AMP) },
+
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(sdio, btsdio_table);
+
+struct btsdio_data {
+ struct hci_dev *hdev;
+ struct sdio_func *func;
+
+ struct work_struct work;
+
+ struct sk_buff_head txq;
+};
+
+#define REG_RDAT 0x00 /* Receiver Data */
+#define REG_TDAT 0x00 /* Transmitter Data */
+#define REG_PC_RRT 0x10 /* Read Packet Control */
+#define REG_PC_WRT 0x11 /* Write Packet Control */
+#define REG_RTC_STAT 0x12 /* Retry Control Status */
+#define REG_RTC_SET 0x12 /* Retry Control Set */
+#define REG_INTRD 0x13 /* Interrupt Indication */
+#define REG_CL_INTRD 0x13 /* Interrupt Clear */
+#define REG_EN_INTRD 0x14 /* Interrupt Enable */
+#define REG_MD_STAT 0x20 /* Bluetooth Mode Status */
+#define REG_MD_SET 0x20 /* Bluetooth Mode Set */
+
+static int btsdio_tx_packet(struct btsdio_data *data, struct sk_buff *skb)
+{
+ int err;
+
+ BT_DBG("%s", data->hdev->name);
+
+ /* Prepend Type-A header */
+ skb_push(skb, 4);
+ skb->data[0] = (skb->len & 0x0000ff);
+ skb->data[1] = (skb->len & 0x00ff00) >> 8;
+ skb->data[2] = (skb->len & 0xff0000) >> 16;
+ skb->data[3] = bt_cb(skb)->pkt_type;
+
+ err = sdio_writesb(data->func, REG_TDAT, skb->data, skb->len);
+ if (err < 0) {
+ skb_pull(skb, 4);
+ sdio_writeb(data->func, 0x01, REG_PC_WRT, NULL);
+ return err;
+ }
+
+ data->hdev->stat.byte_tx += skb->len;
+
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static void btsdio_work(struct work_struct *work)
+{
+ struct btsdio_data *data = container_of(work, struct btsdio_data, work);
+ struct sk_buff *skb;
+ int err;
+
+ BT_DBG("%s", data->hdev->name);
+
+ sdio_claim_host(data->func);
+
+ while ((skb = skb_dequeue(&data->txq))) {
+ err = btsdio_tx_packet(data, skb);
+ if (err < 0) {
+ data->hdev->stat.err_tx++;
+ skb_queue_head(&data->txq, skb);
+ break;
+ }
+ }
+
+ sdio_release_host(data->func);
+}
+
+static int btsdio_rx_packet(struct btsdio_data *data)
+{
+ u8 hdr[4] __attribute__ ((aligned(4)));
+ struct sk_buff *skb;
+ int err, len;
+
+ BT_DBG("%s", data->hdev->name);
+
+ err = sdio_readsb(data->func, hdr, REG_RDAT, 4);
+ if (err < 0)
+ return err;
+
+ len = hdr[0] | (hdr[1] << 8) | (hdr[2] << 16);
+ if (len < 4 || len > 65543)
+ return -EILSEQ;
+
+ skb = bt_skb_alloc(len - 4, GFP_KERNEL);
+ if (!skb) {
+ /* Out of memory. Prepare a read retry and just
+ * return with the expectation that the next time
+ * we're called we'll have more memory. */
+ return -ENOMEM;
+ }
+
+ skb_put(skb, len - 4);
+
+ err = sdio_readsb(data->func, skb->data, REG_RDAT, len - 4);
+ if (err < 0) {
+ kfree_skb(skb);
+ return err;
+ }
+
+ data->hdev->stat.byte_rx += len;
+
+ bt_cb(skb)->pkt_type = hdr[3];
+
+ err = hci_recv_frame(data->hdev, skb);
+ if (err < 0)
+ return err;
+
+ sdio_writeb(data->func, 0x00, REG_PC_RRT, NULL);
+
+ return 0;
+}
+
+static void btsdio_interrupt(struct sdio_func *func)
+{
+ struct btsdio_data *data = sdio_get_drvdata(func);
+ int intrd;
+
+ BT_DBG("%s", data->hdev->name);
+
+ intrd = sdio_readb(func, REG_INTRD, NULL);
+ if (intrd & 0x01) {
+ sdio_writeb(func, 0x01, REG_CL_INTRD, NULL);
+
+ if (btsdio_rx_packet(data) < 0) {
+ data->hdev->stat.err_rx++;
+ sdio_writeb(data->func, 0x01, REG_PC_RRT, NULL);
+ }
+ }
+}
+
+static int btsdio_open(struct hci_dev *hdev)
+{
+ struct btsdio_data *data = hci_get_drvdata(hdev);
+ int err;
+
+ BT_DBG("%s", hdev->name);
+
+ sdio_claim_host(data->func);
+
+ err = sdio_enable_func(data->func);
+ if (err < 0)
+ goto release;
+
+ err = sdio_claim_irq(data->func, btsdio_interrupt);
+ if (err < 0) {
+ sdio_disable_func(data->func);
+ goto release;
+ }
+
+ if (data->func->class == SDIO_CLASS_BT_B)
+ sdio_writeb(data->func, 0x00, REG_MD_SET, NULL);
+
+ sdio_writeb(data->func, 0x01, REG_EN_INTRD, NULL);
+
+release:
+ sdio_release_host(data->func);
+
+ return err;
+}
+
+static int btsdio_close(struct hci_dev *hdev)
+{
+ struct btsdio_data *data = hci_get_drvdata(hdev);
+
+ BT_DBG("%s", hdev->name);
+
+ sdio_claim_host(data->func);
+
+ sdio_writeb(data->func, 0x00, REG_EN_INTRD, NULL);
+
+ sdio_release_irq(data->func);
+ sdio_disable_func(data->func);
+
+ sdio_release_host(data->func);
+
+ return 0;
+}
+
+static int btsdio_flush(struct hci_dev *hdev)
+{
+ struct btsdio_data *data = hci_get_drvdata(hdev);
+
+ BT_DBG("%s", hdev->name);
+
+ skb_queue_purge(&data->txq);
+
+ return 0;
+}
+
+static int btsdio_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btsdio_data *data = hci_get_drvdata(hdev);
+
+ BT_DBG("%s", hdev->name);
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_COMMAND_PKT:
+ hdev->stat.cmd_tx++;
+ break;
+
+ case HCI_ACLDATA_PKT:
+ hdev->stat.acl_tx++;
+ break;
+
+ case HCI_SCODATA_PKT:
+ hdev->stat.sco_tx++;
+ break;
+
+ default:
+ return -EILSEQ;
+ }
+
+ skb_queue_tail(&data->txq, skb);
+
+ schedule_work(&data->work);
+
+ return 0;
+}
+
+static int btsdio_probe(struct sdio_func *func,
+ const struct sdio_device_id *id)
+{
+ struct btsdio_data *data;
+ struct hci_dev *hdev;
+ struct sdio_func_tuple *tuple = func->tuples;
+ int err;
+
+ BT_DBG("func %p id %p class 0x%04x", func, id, func->class);
+
+ while (tuple) {
+ BT_DBG("code 0x%x size %d", tuple->code, tuple->size);
+ tuple = tuple->next;
+ }
+
+ data = devm_kzalloc(&func->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->func = func;
+
+ INIT_WORK(&data->work, btsdio_work);
+
+ skb_queue_head_init(&data->txq);
+
+ hdev = hci_alloc_dev();
+ if (!hdev)
+ return -ENOMEM;
+
+ hdev->bus = HCI_SDIO;
+ hci_set_drvdata(hdev, data);
+
+ if (id->class == SDIO_CLASS_BT_AMP)
+ hdev->dev_type = HCI_AMP;
+ else
+ hdev->dev_type = HCI_BREDR;
+
+ data->hdev = hdev;
+
+ SET_HCIDEV_DEV(hdev, &func->dev);
+
+ hdev->open = btsdio_open;
+ hdev->close = btsdio_close;
+ hdev->flush = btsdio_flush;
+ hdev->send = btsdio_send_frame;
+
+ if (func->vendor == 0x0104 && func->device == 0x00c5)
+ set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
+
+ err = hci_register_dev(hdev);
+ if (err < 0) {
+ hci_free_dev(hdev);
+ return err;
+ }
+
+ sdio_set_drvdata(func, data);
+
+ return 0;
+}
+
+static void btsdio_remove(struct sdio_func *func)
+{
+ struct btsdio_data *data = sdio_get_drvdata(func);
+ struct hci_dev *hdev;
+
+ BT_DBG("func %p", func);
+
+ if (!data)
+ return;
+
+ hdev = data->hdev;
+
+ sdio_set_drvdata(func, NULL);
+
+ hci_unregister_dev(hdev);
+
+ hci_free_dev(hdev);
+}
+
+static struct sdio_driver btsdio_driver = {
+ .name = "btsdio",
+ .probe = btsdio_probe,
+ .remove = btsdio_remove,
+ .id_table = btsdio_table,
+};
+
+static int __init btsdio_init(void)
+{
+ BT_INFO("Generic Bluetooth SDIO driver ver %s", VERSION);
+
+ return sdio_register_driver(&btsdio_driver);
+}
+
+static void __exit btsdio_exit(void)
+{
+ sdio_unregister_driver(&btsdio_driver);
+}
+
+module_init(btsdio_init);
+module_exit(btsdio_exit);
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Generic Bluetooth SDIO driver ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
diff --git a/drivers/bluetooth/btuart_cs.c b/drivers/bluetooth/btuart_cs.c
new file mode 100644
index 0000000..bb8e402
--- /dev/null
+++ b/drivers/bluetooth/btuart_cs.c
@@ -0,0 +1,672 @@
+/*
+ *
+ * Driver for Bluetooth PCMCIA cards with HCI UART interface
+ *
+ * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/spinlock.h>
+#include <linux/moduleparam.h>
+
+#include <linux/skbuff.h>
+#include <linux/string.h>
+#include <linux/serial.h>
+#include <linux/serial_reg.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+
+
+/* ======================== Module parameters ======================== */
+
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Bluetooth driver for Bluetooth PCMCIA cards with HCI UART interface");
+MODULE_LICENSE("GPL");
+
+
+
+/* ======================== Local structures ======================== */
+
+
+struct btuart_info {
+ struct pcmcia_device *p_dev;
+
+ struct hci_dev *hdev;
+
+ spinlock_t lock; /* For serializing operations */
+
+ struct sk_buff_head txq;
+ unsigned long tx_state;
+
+ unsigned long rx_state;
+ unsigned long rx_count;
+ struct sk_buff *rx_skb;
+};
+
+
+static int btuart_config(struct pcmcia_device *link);
+static void btuart_release(struct pcmcia_device *link);
+
+static void btuart_detach(struct pcmcia_device *p_dev);
+
+
+/* Maximum baud rate */
+#define SPEED_MAX 115200
+
+/* Default baud rate: 57600, 115200, 230400 or 460800 */
+#define DEFAULT_BAUD_RATE 115200
+
+
+/* Transmit states */
+#define XMIT_SENDING 1
+#define XMIT_WAKEUP 2
+#define XMIT_WAITING 8
+
+/* Receiver states */
+#define RECV_WAIT_PACKET_TYPE 0
+#define RECV_WAIT_EVENT_HEADER 1
+#define RECV_WAIT_ACL_HEADER 2
+#define RECV_WAIT_SCO_HEADER 3
+#define RECV_WAIT_DATA 4
+
+
+
+/* ======================== Interrupt handling ======================== */
+
+
+static int btuart_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
+{
+ int actual = 0;
+
+ /* Tx FIFO should be empty */
+ if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
+ return 0;
+
+ /* Fill FIFO with current frame */
+ while ((fifo_size-- > 0) && (actual < len)) {
+ /* Transmit next byte */
+ outb(buf[actual], iobase + UART_TX);
+ actual++;
+ }
+
+ return actual;
+}
+
+
+static void btuart_write_wakeup(struct btuart_info *info)
+{
+ if (!info) {
+ BT_ERR("Unknown device");
+ return;
+ }
+
+ if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
+ set_bit(XMIT_WAKEUP, &(info->tx_state));
+ return;
+ }
+
+ do {
+ unsigned int iobase = info->p_dev->resource[0]->start;
+ register struct sk_buff *skb;
+ int len;
+
+ clear_bit(XMIT_WAKEUP, &(info->tx_state));
+
+ if (!pcmcia_dev_present(info->p_dev))
+ return;
+
+ skb = skb_dequeue(&(info->txq));
+ if (!skb)
+ break;
+
+ /* Send frame */
+ len = btuart_write(iobase, 16, skb->data, skb->len);
+ set_bit(XMIT_WAKEUP, &(info->tx_state));
+
+ if (len == skb->len) {
+ kfree_skb(skb);
+ } else {
+ skb_pull(skb, len);
+ skb_queue_head(&(info->txq), skb);
+ }
+
+ info->hdev->stat.byte_tx += len;
+
+ } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
+
+ clear_bit(XMIT_SENDING, &(info->tx_state));
+}
+
+
+static void btuart_receive(struct btuart_info *info)
+{
+ unsigned int iobase;
+ int boguscount = 0;
+
+ if (!info) {
+ BT_ERR("Unknown device");
+ return;
+ }
+
+ iobase = info->p_dev->resource[0]->start;
+
+ do {
+ info->hdev->stat.byte_rx++;
+
+ /* Allocate packet */
+ if (!info->rx_skb) {
+ info->rx_state = RECV_WAIT_PACKET_TYPE;
+ info->rx_count = 0;
+ info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
+ if (!info->rx_skb) {
+ BT_ERR("Can't allocate mem for new packet");
+ return;
+ }
+ }
+
+ if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
+
+ bt_cb(info->rx_skb)->pkt_type = inb(iobase + UART_RX);
+
+ switch (bt_cb(info->rx_skb)->pkt_type) {
+
+ case HCI_EVENT_PKT:
+ info->rx_state = RECV_WAIT_EVENT_HEADER;
+ info->rx_count = HCI_EVENT_HDR_SIZE;
+ break;
+
+ case HCI_ACLDATA_PKT:
+ info->rx_state = RECV_WAIT_ACL_HEADER;
+ info->rx_count = HCI_ACL_HDR_SIZE;
+ break;
+
+ case HCI_SCODATA_PKT:
+ info->rx_state = RECV_WAIT_SCO_HEADER;
+ info->rx_count = HCI_SCO_HDR_SIZE;
+ break;
+
+ default:
+ /* Unknown packet */
+ BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
+ info->hdev->stat.err_rx++;
+
+ kfree_skb(info->rx_skb);
+ info->rx_skb = NULL;
+ break;
+
+ }
+
+ } else {
+
+ *skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
+ info->rx_count--;
+
+ if (info->rx_count == 0) {
+
+ int dlen;
+ struct hci_event_hdr *eh;
+ struct hci_acl_hdr *ah;
+ struct hci_sco_hdr *sh;
+
+
+ switch (info->rx_state) {
+
+ case RECV_WAIT_EVENT_HEADER:
+ eh = hci_event_hdr(info->rx_skb);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = eh->plen;
+ break;
+
+ case RECV_WAIT_ACL_HEADER:
+ ah = hci_acl_hdr(info->rx_skb);
+ dlen = __le16_to_cpu(ah->dlen);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = dlen;
+ break;
+
+ case RECV_WAIT_SCO_HEADER:
+ sh = hci_sco_hdr(info->rx_skb);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = sh->dlen;
+ break;
+
+ case RECV_WAIT_DATA:
+ hci_recv_frame(info->hdev, info->rx_skb);
+ info->rx_skb = NULL;
+ break;
+
+ }
+
+ }
+
+ }
+
+ /* Make sure we don't stay here too long */
+ if (boguscount++ > 16)
+ break;
+
+ } while (inb(iobase + UART_LSR) & UART_LSR_DR);
+}
+
+
+static irqreturn_t btuart_interrupt(int irq, void *dev_inst)
+{
+ struct btuart_info *info = dev_inst;
+ unsigned int iobase;
+ int boguscount = 0;
+ int iir, lsr;
+ irqreturn_t r = IRQ_NONE;
+
+ if (!info || !info->hdev)
+ /* our irq handler is shared */
+ return IRQ_NONE;
+
+ iobase = info->p_dev->resource[0]->start;
+
+ spin_lock(&(info->lock));
+
+ iir = inb(iobase + UART_IIR) & UART_IIR_ID;
+ while (iir) {
+ r = IRQ_HANDLED;
+
+ /* Clear interrupt */
+ lsr = inb(iobase + UART_LSR);
+
+ switch (iir) {
+ case UART_IIR_RLSI:
+ BT_ERR("RLSI");
+ break;
+ case UART_IIR_RDI:
+ /* Receive interrupt */
+ btuart_receive(info);
+ break;
+ case UART_IIR_THRI:
+ if (lsr & UART_LSR_THRE) {
+ /* Transmitter ready for data */
+ btuart_write_wakeup(info);
+ }
+ break;
+ default:
+ BT_ERR("Unhandled IIR=%#x", iir);
+ break;
+ }
+
+ /* Make sure we don't stay here too long */
+ if (boguscount++ > 100)
+ break;
+
+ iir = inb(iobase + UART_IIR) & UART_IIR_ID;
+
+ }
+
+ spin_unlock(&(info->lock));
+
+ return r;
+}
+
+
+static void btuart_change_speed(struct btuart_info *info,
+ unsigned int speed)
+{
+ unsigned long flags;
+ unsigned int iobase;
+ int fcr; /* FIFO control reg */
+ int lcr; /* Line control reg */
+ int divisor;
+
+ if (!info) {
+ BT_ERR("Unknown device");
+ return;
+ }
+
+ iobase = info->p_dev->resource[0]->start;
+
+ spin_lock_irqsave(&(info->lock), flags);
+
+ /* Turn off interrupts */
+ outb(0, iobase + UART_IER);
+
+ divisor = SPEED_MAX / speed;
+
+ fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT;
+
+ /*
+ * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
+ * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
+ * about this timeout since it will always be fast enough.
+ */
+
+ if (speed < 38400)
+ fcr |= UART_FCR_TRIGGER_1;
+ else
+ fcr |= UART_FCR_TRIGGER_14;
+
+ /* Bluetooth cards use 8N1 */
+ lcr = UART_LCR_WLEN8;
+
+ outb(UART_LCR_DLAB | lcr, iobase + UART_LCR); /* Set DLAB */
+ outb(divisor & 0xff, iobase + UART_DLL); /* Set speed */
+ outb(divisor >> 8, iobase + UART_DLM);
+ outb(lcr, iobase + UART_LCR); /* Set 8N1 */
+ outb(fcr, iobase + UART_FCR); /* Enable FIFO's */
+
+ /* Turn on interrupts */
+ outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
+
+ spin_unlock_irqrestore(&(info->lock), flags);
+}
+
+
+
+/* ======================== HCI interface ======================== */
+
+
+static int btuart_hci_flush(struct hci_dev *hdev)
+{
+ struct btuart_info *info = hci_get_drvdata(hdev);
+
+ /* Drop TX queue */
+ skb_queue_purge(&(info->txq));
+
+ return 0;
+}
+
+
+static int btuart_hci_open(struct hci_dev *hdev)
+{
+ return 0;
+}
+
+
+static int btuart_hci_close(struct hci_dev *hdev)
+{
+ btuart_hci_flush(hdev);
+
+ return 0;
+}
+
+
+static int btuart_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btuart_info *info = hci_get_drvdata(hdev);
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_COMMAND_PKT:
+ hdev->stat.cmd_tx++;
+ break;
+ case HCI_ACLDATA_PKT:
+ hdev->stat.acl_tx++;
+ break;
+ case HCI_SCODATA_PKT:
+ hdev->stat.sco_tx++;
+ break;
+ }
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+ skb_queue_tail(&(info->txq), skb);
+
+ btuart_write_wakeup(info);
+
+ return 0;
+}
+
+
+
+/* ======================== Card services HCI interaction ======================== */
+
+
+static int btuart_open(struct btuart_info *info)
+{
+ unsigned long flags;
+ unsigned int iobase = info->p_dev->resource[0]->start;
+ struct hci_dev *hdev;
+
+ spin_lock_init(&(info->lock));
+
+ skb_queue_head_init(&(info->txq));
+
+ info->rx_state = RECV_WAIT_PACKET_TYPE;
+ info->rx_count = 0;
+ info->rx_skb = NULL;
+
+ /* Initialize HCI device */
+ hdev = hci_alloc_dev();
+ if (!hdev) {
+ BT_ERR("Can't allocate HCI device");
+ return -ENOMEM;
+ }
+
+ info->hdev = hdev;
+
+ hdev->bus = HCI_PCCARD;
+ hci_set_drvdata(hdev, info);
+ SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
+
+ hdev->open = btuart_hci_open;
+ hdev->close = btuart_hci_close;
+ hdev->flush = btuart_hci_flush;
+ hdev->send = btuart_hci_send_frame;
+
+ spin_lock_irqsave(&(info->lock), flags);
+
+ /* Reset UART */
+ outb(0, iobase + UART_MCR);
+
+ /* Turn off interrupts */
+ outb(0, iobase + UART_IER);
+
+ /* Initialize UART */
+ outb(UART_LCR_WLEN8, iobase + UART_LCR); /* Reset DLAB */
+ outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);
+
+ /* Turn on interrupts */
+ // outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
+
+ spin_unlock_irqrestore(&(info->lock), flags);
+
+ btuart_change_speed(info, DEFAULT_BAUD_RATE);
+
+ /* Timeout before it is safe to send the first HCI packet */
+ msleep(1000);
+
+ /* Register HCI device */
+ if (hci_register_dev(hdev) < 0) {
+ BT_ERR("Can't register HCI device");
+ info->hdev = NULL;
+ hci_free_dev(hdev);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+
+static int btuart_close(struct btuart_info *info)
+{
+ unsigned long flags;
+ unsigned int iobase = info->p_dev->resource[0]->start;
+ struct hci_dev *hdev = info->hdev;
+
+ if (!hdev)
+ return -ENODEV;
+
+ btuart_hci_close(hdev);
+
+ spin_lock_irqsave(&(info->lock), flags);
+
+ /* Reset UART */
+ outb(0, iobase + UART_MCR);
+
+ /* Turn off interrupts */
+ outb(0, iobase + UART_IER);
+
+ spin_unlock_irqrestore(&(info->lock), flags);
+
+ hci_unregister_dev(hdev);
+ hci_free_dev(hdev);
+
+ return 0;
+}
+
+static int btuart_probe(struct pcmcia_device *link)
+{
+ struct btuart_info *info;
+
+ /* Create new info device */
+ info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->p_dev = link;
+ link->priv = info;
+
+ link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
+ CONF_AUTO_SET_IO;
+
+ return btuart_config(link);
+}
+
+
+static void btuart_detach(struct pcmcia_device *link)
+{
+ btuart_release(link);
+}
+
+static int btuart_check_config(struct pcmcia_device *p_dev, void *priv_data)
+{
+ int *try = priv_data;
+
+ if (!try)
+ p_dev->io_lines = 16;
+
+ if ((p_dev->resource[0]->end != 8) || (p_dev->resource[0]->start == 0))
+ return -EINVAL;
+
+ p_dev->resource[0]->end = 8;
+ p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+ p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
+
+ return pcmcia_request_io(p_dev);
+}
+
+static int btuart_check_config_notpicky(struct pcmcia_device *p_dev,
+ void *priv_data)
+{
+ static unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
+ int j;
+
+ if (p_dev->io_lines > 3)
+ return -ENODEV;
+
+ p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+ p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
+ p_dev->resource[0]->end = 8;
+
+ for (j = 0; j < 5; j++) {
+ p_dev->resource[0]->start = base[j];
+ p_dev->io_lines = base[j] ? 16 : 3;
+ if (!pcmcia_request_io(p_dev))
+ return 0;
+ }
+ return -ENODEV;
+}
+
+static int btuart_config(struct pcmcia_device *link)
+{
+ struct btuart_info *info = link->priv;
+ int i;
+ int try;
+
+ /* First pass: look for a config entry that looks normal.
+ Two tries: without IO aliases, then with aliases */
+ for (try = 0; try < 2; try++)
+ if (!pcmcia_loop_config(link, btuart_check_config, &try))
+ goto found_port;
+
+ /* Second pass: try to find an entry that isn't picky about
+ its base address, then try to grab any standard serial port
+ address, and finally try to get any free port. */
+ if (!pcmcia_loop_config(link, btuart_check_config_notpicky, NULL))
+ goto found_port;
+
+ BT_ERR("No usable port range found");
+ goto failed;
+
+found_port:
+ i = pcmcia_request_irq(link, btuart_interrupt);
+ if (i != 0)
+ goto failed;
+
+ i = pcmcia_enable_device(link);
+ if (i != 0)
+ goto failed;
+
+ if (btuart_open(info) != 0)
+ goto failed;
+
+ return 0;
+
+failed:
+ btuart_release(link);
+ return -ENODEV;
+}
+
+
+static void btuart_release(struct pcmcia_device *link)
+{
+ struct btuart_info *info = link->priv;
+
+ btuart_close(info);
+
+ pcmcia_disable_device(link);
+}
+
+static const struct pcmcia_device_id btuart_ids[] = {
+ /* don't use this driver. Use serial_cs + hci_uart instead */
+ PCMCIA_DEVICE_NULL
+};
+MODULE_DEVICE_TABLE(pcmcia, btuart_ids);
+
+static struct pcmcia_driver btuart_driver = {
+ .owner = THIS_MODULE,
+ .name = "btuart_cs",
+ .probe = btuart_probe,
+ .remove = btuart_detach,
+ .id_table = btuart_ids,
+};
+module_pcmcia_driver(btuart_driver);
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
new file mode 100644
index 0000000..1ccad79
--- /dev/null
+++ b/drivers/bluetooth/btusb.c
@@ -0,0 +1,3256 @@
+/*
+ *
+ * Generic Bluetooth USB driver
+ *
+ * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/firmware.h>
+#include <asm/unaligned.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btintel.h"
+#include "btbcm.h"
+#include "btrtl.h"
+
+#define VERSION "0.8"
+
+static bool disable_scofix;
+static bool force_scofix;
+
+static bool reset = true;
+
+static struct usb_driver btusb_driver;
+
+#define BTUSB_IGNORE 0x01
+#define BTUSB_DIGIANSWER 0x02
+#define BTUSB_CSR 0x04
+#define BTUSB_SNIFFER 0x08
+#define BTUSB_BCM92035 0x10
+#define BTUSB_BROKEN_ISOC 0x20
+#define BTUSB_WRONG_SCO_MTU 0x40
+#define BTUSB_ATH3012 0x80
+#define BTUSB_INTEL 0x100
+#define BTUSB_INTEL_BOOT 0x200
+#define BTUSB_BCM_PATCHRAM 0x400
+#define BTUSB_MARVELL 0x800
+#define BTUSB_SWAVE 0x1000
+#define BTUSB_INTEL_NEW 0x2000
+#define BTUSB_AMP 0x4000
+#define BTUSB_QCA_ROME 0x8000
+#define BTUSB_BCM_APPLE 0x10000
+#define BTUSB_REALTEK 0x20000
+#define BTUSB_BCM2045 0x40000
+#define BTUSB_IFNUM_2 0x80000
+
+static const struct usb_device_id btusb_table[] = {
+ /* Generic Bluetooth USB device */
+ { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
+
+ /* Generic Bluetooth AMP device */
+ { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
+
+ /* Generic Bluetooth USB interface */
+ { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
+
+ /* Apple-specific (Broadcom) devices */
+ { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
+ .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
+
+ /* MediaTek MT76x0E */
+ { USB_DEVICE(0x0e8d, 0x763f) },
+
+ /* Broadcom SoftSailing reporting vendor specific */
+ { USB_DEVICE(0x0a5c, 0x21e1) },
+
+ /* Apple MacBookPro 7,1 */
+ { USB_DEVICE(0x05ac, 0x8213) },
+
+ /* Apple iMac11,1 */
+ { USB_DEVICE(0x05ac, 0x8215) },
+
+ /* Apple MacBookPro6,2 */
+ { USB_DEVICE(0x05ac, 0x8218) },
+
+ /* Apple MacBookAir3,1, MacBookAir3,2 */
+ { USB_DEVICE(0x05ac, 0x821b) },
+
+ /* Apple MacBookAir4,1 */
+ { USB_DEVICE(0x05ac, 0x821f) },
+
+ /* Apple MacBookPro8,2 */
+ { USB_DEVICE(0x05ac, 0x821a) },
+
+ /* Apple MacMini5,1 */
+ { USB_DEVICE(0x05ac, 0x8281) },
+
+ /* AVM BlueFRITZ! USB v2.0 */
+ { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
+
+ /* Bluetooth Ultraport Module from IBM */
+ { USB_DEVICE(0x04bf, 0x030a) },
+
+ /* ALPS Modules with non-standard id */
+ { USB_DEVICE(0x044e, 0x3001) },
+ { USB_DEVICE(0x044e, 0x3002) },
+
+ /* Ericsson with non-standard id */
+ { USB_DEVICE(0x0bdb, 0x1002) },
+
+ /* Canyon CN-BTU1 with HID interfaces */
+ { USB_DEVICE(0x0c10, 0x0000) },
+
+ /* Broadcom BCM20702A0 */
+ { USB_DEVICE(0x413c, 0x8197) },
+
+ /* Broadcom BCM20702B0 (Dynex/Insignia) */
+ { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
+
+ /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
+ { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
+
+ /* Foxconn - Hon Hai */
+ { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
+ .driver_info = BTUSB_BCM_PATCHRAM },
+
+ /* Lite-On Technology - Broadcom based */
+ { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
+ .driver_info = BTUSB_BCM_PATCHRAM },
+
+ /* Broadcom devices with vendor specific id */
+ { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
+ .driver_info = BTUSB_BCM_PATCHRAM },
+
+ /* ASUSTek Computer - Broadcom based */
+ { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
+ .driver_info = BTUSB_BCM_PATCHRAM },
+
+ /* Belkin F8065bf - Broadcom based */
+ { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
+ .driver_info = BTUSB_BCM_PATCHRAM },
+
+ /* IMC Networks - Broadcom based */
+ { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
+ .driver_info = BTUSB_BCM_PATCHRAM },
+
+ /* Toshiba Corp - Broadcom based */
+ { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
+ .driver_info = BTUSB_BCM_PATCHRAM },
+
+ /* Intel Bluetooth USB Bootloader (RAM module) */
+ { USB_DEVICE(0x8087, 0x0a5a),
+ .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
+
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, btusb_table);
+
+static const struct usb_device_id blacklist_table[] = {
+ /* CSR BlueCore devices */
+ { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
+
+ /* Broadcom BCM2033 without firmware */
+ { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
+
+ /* Broadcom BCM2045 devices */
+ { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
+
+ /* Atheros 3011 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
+ { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
+ { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
+ { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
+ { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
+ { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
+ { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
+
+ /* Atheros AR9285 Malbec with sflash firmware */
+ { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
+
+ /* Atheros 3012 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
+
+ /* Atheros AR5BBU12 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
+
+ /* Atheros AR5BBU12 with sflash firmware */
+ { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
+ { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
+
+ /* QCA ROME chipset */
+ { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
+ { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
+ { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
+
+ /* Broadcom BCM2035 */
+ { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
+ { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
+ { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+ /* Broadcom BCM2045 */
+ { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
+ { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+ /* IBM/Lenovo ThinkPad with Broadcom chip */
+ { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
+ { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+ /* HP laptop with Broadcom chip */
+ { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+ /* Dell laptop with Broadcom chip */
+ { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+ /* Dell Wireless 370 and 410 devices */
+ { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
+ { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+ /* Belkin F8T012 and F8T013 devices */
+ { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
+ { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+ /* Asus WL-BTD202 device */
+ { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+ /* Kensington Bluetooth USB adapter */
+ { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
+
+ /* RTX Telecom based adapters with buggy SCO support */
+ { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
+ { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
+
+ /* CONWISE Technology based adapters with buggy SCO support */
+ { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
+
+ /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
+ { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
+
+ /* Digianswer devices */
+ { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
+ { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
+
+ /* CSR BlueCore Bluetooth Sniffer */
+ { USB_DEVICE(0x0a12, 0x0002),
+ .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
+
+ /* Frontline ComProbe Bluetooth Sniffer */
+ { USB_DEVICE(0x16d3, 0x0002),
+ .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
+
+ /* Marvell Bluetooth devices */
+ { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
+ { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
+
+ /* Intel Bluetooth devices */
+ { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
+ { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
+ { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
+ { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
+
+ /* Other Intel Bluetooth devices */
+ { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
+ .driver_info = BTUSB_IGNORE },
+
+ /* Realtek Bluetooth devices */
+ { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
+ .driver_info = BTUSB_REALTEK },
+
+ /* Additional Realtek 8723AE Bluetooth devices */
+ { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
+ { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
+
+ /* Additional Realtek 8723BE Bluetooth devices */
+ { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
+ { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
+ { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
+ { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
+ { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
+ { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
+
+ /* Additional Realtek 8821AE Bluetooth devices */
+ { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
+ { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
+ { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
+ { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
+ { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
+
+ /* Silicon Wave based devices */
+ { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
+
+ { } /* Terminating entry */
+};
+
+#define BTUSB_MAX_ISOC_FRAMES 10
+
+#define BTUSB_INTR_RUNNING 0
+#define BTUSB_BULK_RUNNING 1
+#define BTUSB_ISOC_RUNNING 2
+#define BTUSB_SUSPENDING 3
+#define BTUSB_DID_ISO_RESUME 4
+#define BTUSB_BOOTLOADER 5
+#define BTUSB_DOWNLOADING 6
+#define BTUSB_FIRMWARE_LOADED 7
+#define BTUSB_FIRMWARE_FAILED 8
+#define BTUSB_BOOTING 9
+#define BTUSB_RESET_RESUME 10
+#define BTUSB_DIAG_RUNNING 11
+
+struct btusb_data {
+ struct hci_dev *hdev;
+ struct usb_device *udev;
+ struct usb_interface *intf;
+ struct usb_interface *isoc;
+ struct usb_interface *diag;
+
+ unsigned long flags;
+
+ struct work_struct work;
+ struct work_struct waker;
+
+ struct usb_anchor deferred;
+ struct usb_anchor tx_anchor;
+ int tx_in_flight;
+ spinlock_t txlock;
+
+ struct usb_anchor intr_anchor;
+ struct usb_anchor bulk_anchor;
+ struct usb_anchor isoc_anchor;
+ struct usb_anchor diag_anchor;
+ spinlock_t rxlock;
+
+ struct sk_buff *evt_skb;
+ struct sk_buff *acl_skb;
+ struct sk_buff *sco_skb;
+
+ struct usb_endpoint_descriptor *intr_ep;
+ struct usb_endpoint_descriptor *bulk_tx_ep;
+ struct usb_endpoint_descriptor *bulk_rx_ep;
+ struct usb_endpoint_descriptor *isoc_tx_ep;
+ struct usb_endpoint_descriptor *isoc_rx_ep;
+ struct usb_endpoint_descriptor *diag_tx_ep;
+ struct usb_endpoint_descriptor *diag_rx_ep;
+
+ __u8 cmdreq_type;
+ __u8 cmdreq;
+
+ unsigned int sco_num;
+ int isoc_altsetting;
+ int suspend_count;
+
+ int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
+ int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
+
+ int (*setup_on_usb)(struct hci_dev *hdev);
+};
+
+static inline void btusb_free_frags(struct btusb_data *data)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&data->rxlock, flags);
+
+ kfree_skb(data->evt_skb);
+ data->evt_skb = NULL;
+
+ kfree_skb(data->acl_skb);
+ data->acl_skb = NULL;
+
+ kfree_skb(data->sco_skb);
+ data->sco_skb = NULL;
+
+ spin_unlock_irqrestore(&data->rxlock, flags);
+}
+
+static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
+{
+ struct sk_buff *skb;
+ int err = 0;
+
+ spin_lock(&data->rxlock);
+ skb = data->evt_skb;
+
+ while (count) {
+ int len;
+
+ if (!skb) {
+ skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
+ if (!skb) {
+ err = -ENOMEM;
+ break;
+ }
+
+ bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
+ bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
+ }
+
+ len = min_t(uint, bt_cb(skb)->expect, count);
+ memcpy(skb_put(skb, len), buffer, len);
+
+ count -= len;
+ buffer += len;
+ bt_cb(skb)->expect -= len;
+
+ if (skb->len == HCI_EVENT_HDR_SIZE) {
+ /* Complete event header */
+ bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
+
+ if (skb_tailroom(skb) < bt_cb(skb)->expect) {
+ kfree_skb(skb);
+ skb = NULL;
+
+ err = -EILSEQ;
+ break;
+ }
+ }
+
+ if (bt_cb(skb)->expect == 0) {
+ /* Complete frame */
+ data->recv_event(data->hdev, skb);
+ skb = NULL;
+ }
+ }
+
+ data->evt_skb = skb;
+ spin_unlock(&data->rxlock);
+
+ return err;
+}
+
+static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
+{
+ struct sk_buff *skb;
+ int err = 0;
+
+ spin_lock(&data->rxlock);
+ skb = data->acl_skb;
+
+ while (count) {
+ int len;
+
+ if (!skb) {
+ skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
+ if (!skb) {
+ err = -ENOMEM;
+ break;
+ }
+
+ bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
+ bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
+ }
+
+ len = min_t(uint, bt_cb(skb)->expect, count);
+ memcpy(skb_put(skb, len), buffer, len);
+
+ count -= len;
+ buffer += len;
+ bt_cb(skb)->expect -= len;
+
+ if (skb->len == HCI_ACL_HDR_SIZE) {
+ __le16 dlen = hci_acl_hdr(skb)->dlen;
+
+ /* Complete ACL header */
+ bt_cb(skb)->expect = __le16_to_cpu(dlen);
+
+ if (skb_tailroom(skb) < bt_cb(skb)->expect) {
+ kfree_skb(skb);
+ skb = NULL;
+
+ err = -EILSEQ;
+ break;
+ }
+ }
+
+ if (bt_cb(skb)->expect == 0) {
+ /* Complete frame */
+ hci_recv_frame(data->hdev, skb);
+ skb = NULL;
+ }
+ }
+
+ data->acl_skb = skb;
+ spin_unlock(&data->rxlock);
+
+ return err;
+}
+
+static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
+{
+ struct sk_buff *skb;
+ int err = 0;
+
+ spin_lock(&data->rxlock);
+ skb = data->sco_skb;
+
+ while (count) {
+ int len;
+
+ if (!skb) {
+ skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
+ if (!skb) {
+ err = -ENOMEM;
+ break;
+ }
+
+ bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
+ bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
+ }
+
+ len = min_t(uint, bt_cb(skb)->expect, count);
+ memcpy(skb_put(skb, len), buffer, len);
+
+ count -= len;
+ buffer += len;
+ bt_cb(skb)->expect -= len;
+
+ if (skb->len == HCI_SCO_HDR_SIZE) {
+ /* Complete SCO header */
+ bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
+
+ if (skb_tailroom(skb) < bt_cb(skb)->expect) {
+ kfree_skb(skb);
+ skb = NULL;
+
+ err = -EILSEQ;
+ break;
+ }
+ }
+
+ if (bt_cb(skb)->expect == 0) {
+ /* Complete frame */
+ hci_recv_frame(data->hdev, skb);
+ skb = NULL;
+ }
+ }
+
+ data->sco_skb = skb;
+ spin_unlock(&data->rxlock);
+
+ return err;
+}
+
+static void btusb_intr_complete(struct urb *urb)
+{
+ struct hci_dev *hdev = urb->context;
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ int err;
+
+ BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
+ urb->actual_length);
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ return;
+
+ if (urb->status == 0) {
+ hdev->stat.byte_rx += urb->actual_length;
+
+ if (btusb_recv_intr(data, urb->transfer_buffer,
+ urb->actual_length) < 0) {
+ BT_ERR("%s corrupted event packet", hdev->name);
+ hdev->stat.err_rx++;
+ }
+ } else if (urb->status == -ENOENT) {
+ /* Avoid suspend failed when usb_kill_urb */
+ return;
+ }
+
+ if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
+ return;
+
+ usb_mark_last_busy(data->udev);
+ usb_anchor_urb(urb, &data->intr_anchor);
+
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0) {
+ /* -EPERM: urb is being killed;
+ * -ENODEV: device got disconnected */
+ if (err != -EPERM && err != -ENODEV)
+ BT_ERR("%s urb %p failed to resubmit (%d)",
+ hdev->name, urb, -err);
+ usb_unanchor_urb(urb);
+ }
+}
+
+static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct urb *urb;
+ unsigned char *buf;
+ unsigned int pipe;
+ int err, size;
+
+ BT_DBG("%s", hdev->name);
+
+ if (!data->intr_ep)
+ return -ENODEV;
+
+ urb = usb_alloc_urb(0, mem_flags);
+ if (!urb)
+ return -ENOMEM;
+
+ size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
+
+ buf = kmalloc(size, mem_flags);
+ if (!buf) {
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
+
+ usb_fill_int_urb(urb, data->udev, pipe, buf, size,
+ btusb_intr_complete, hdev, data->intr_ep->bInterval);
+
+ urb->transfer_flags |= URB_FREE_BUFFER;
+
+ usb_anchor_urb(urb, &data->intr_anchor);
+
+ err = usb_submit_urb(urb, mem_flags);
+ if (err < 0) {
+ if (err != -EPERM && err != -ENODEV)
+ BT_ERR("%s urb %p submission failed (%d)",
+ hdev->name, urb, -err);
+ usb_unanchor_urb(urb);
+ }
+
+ usb_free_urb(urb);
+
+ return err;
+}
+
+static void btusb_bulk_complete(struct urb *urb)
+{
+ struct hci_dev *hdev = urb->context;
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ int err;
+
+ BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
+ urb->actual_length);
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ return;
+
+ if (urb->status == 0) {
+ hdev->stat.byte_rx += urb->actual_length;
+
+ if (data->recv_bulk(data, urb->transfer_buffer,
+ urb->actual_length) < 0) {
+ BT_ERR("%s corrupted ACL packet", hdev->name);
+ hdev->stat.err_rx++;
+ }
+ } else if (urb->status == -ENOENT) {
+ /* Avoid suspend failed when usb_kill_urb */
+ return;
+ }
+
+ if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
+ return;
+
+ usb_anchor_urb(urb, &data->bulk_anchor);
+ usb_mark_last_busy(data->udev);
+
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0) {
+ /* -EPERM: urb is being killed;
+ * -ENODEV: device got disconnected */
+ if (err != -EPERM && err != -ENODEV)
+ BT_ERR("%s urb %p failed to resubmit (%d)",
+ hdev->name, urb, -err);
+ usb_unanchor_urb(urb);
+ }
+}
+
+static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct urb *urb;
+ unsigned char *buf;
+ unsigned int pipe;
+ int err, size = HCI_MAX_FRAME_SIZE;
+
+ BT_DBG("%s", hdev->name);
+
+ if (!data->bulk_rx_ep)
+ return -ENODEV;
+
+ urb = usb_alloc_urb(0, mem_flags);
+ if (!urb)
+ return -ENOMEM;
+
+ buf = kmalloc(size, mem_flags);
+ if (!buf) {
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
+
+ usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
+ btusb_bulk_complete, hdev);
+
+ urb->transfer_flags |= URB_FREE_BUFFER;
+
+ usb_mark_last_busy(data->udev);
+ usb_anchor_urb(urb, &data->bulk_anchor);
+
+ err = usb_submit_urb(urb, mem_flags);
+ if (err < 0) {
+ if (err != -EPERM && err != -ENODEV)
+ BT_ERR("%s urb %p submission failed (%d)",
+ hdev->name, urb, -err);
+ usb_unanchor_urb(urb);
+ }
+
+ usb_free_urb(urb);
+
+ return err;
+}
+
+static void btusb_isoc_complete(struct urb *urb)
+{
+ struct hci_dev *hdev = urb->context;
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ int i, err;
+
+ BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
+ urb->actual_length);
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ return;
+
+ if (urb->status == 0) {
+ for (i = 0; i < urb->number_of_packets; i++) {
+ unsigned int offset = urb->iso_frame_desc[i].offset;
+ unsigned int length = urb->iso_frame_desc[i].actual_length;
+
+ if (urb->iso_frame_desc[i].status)
+ continue;
+
+ hdev->stat.byte_rx += length;
+
+ if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
+ length) < 0) {
+ BT_ERR("%s corrupted SCO packet", hdev->name);
+ hdev->stat.err_rx++;
+ }
+ }
+ } else if (urb->status == -ENOENT) {
+ /* Avoid suspend failed when usb_kill_urb */
+ return;
+ }
+
+ if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
+ return;
+
+ usb_anchor_urb(urb, &data->isoc_anchor);
+
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0) {
+ /* -EPERM: urb is being killed;
+ * -ENODEV: device got disconnected */
+ if (err != -EPERM && err != -ENODEV)
+ BT_ERR("%s urb %p failed to resubmit (%d)",
+ hdev->name, urb, -err);
+ usb_unanchor_urb(urb);
+ }
+}
+
+static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
+{
+ int i, offset = 0;
+
+ BT_DBG("len %d mtu %d", len, mtu);
+
+ for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
+ i++, offset += mtu, len -= mtu) {
+ urb->iso_frame_desc[i].offset = offset;
+ urb->iso_frame_desc[i].length = mtu;
+ }
+
+ if (len && i < BTUSB_MAX_ISOC_FRAMES) {
+ urb->iso_frame_desc[i].offset = offset;
+ urb->iso_frame_desc[i].length = len;
+ i++;
+ }
+
+ urb->number_of_packets = i;
+}
+
+static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct urb *urb;
+ unsigned char *buf;
+ unsigned int pipe;
+ int err, size;
+
+ BT_DBG("%s", hdev->name);
+
+ if (!data->isoc_rx_ep)
+ return -ENODEV;
+
+ urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
+ if (!urb)
+ return -ENOMEM;
+
+ size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
+ BTUSB_MAX_ISOC_FRAMES;
+
+ buf = kmalloc(size, mem_flags);
+ if (!buf) {
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
+
+ usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
+ hdev, data->isoc_rx_ep->bInterval);
+
+ urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
+
+ __fill_isoc_descriptor(urb, size,
+ le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
+
+ usb_anchor_urb(urb, &data->isoc_anchor);
+
+ err = usb_submit_urb(urb, mem_flags);
+ if (err < 0) {
+ if (err != -EPERM && err != -ENODEV)
+ BT_ERR("%s urb %p submission failed (%d)",
+ hdev->name, urb, -err);
+ usb_unanchor_urb(urb);
+ }
+
+ usb_free_urb(urb);
+
+ return err;
+}
+
+static void btusb_diag_complete(struct urb *urb)
+{
+ struct hci_dev *hdev = urb->context;
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ int err;
+
+ BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
+ urb->actual_length);
+
+ if (urb->status == 0) {
+ struct sk_buff *skb;
+
+ skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
+ if (skb) {
+ memcpy(skb_put(skb, urb->actual_length),
+ urb->transfer_buffer, urb->actual_length);
+ hci_recv_diag(hdev, skb);
+ }
+ } else if (urb->status == -ENOENT) {
+ /* Avoid suspend failed when usb_kill_urb */
+ return;
+ }
+
+ if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
+ return;
+
+ usb_anchor_urb(urb, &data->diag_anchor);
+ usb_mark_last_busy(data->udev);
+
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0) {
+ /* -EPERM: urb is being killed;
+ * -ENODEV: device got disconnected */
+ if (err != -EPERM && err != -ENODEV)
+ BT_ERR("%s urb %p failed to resubmit (%d)",
+ hdev->name, urb, -err);
+ usb_unanchor_urb(urb);
+ }
+}
+
+static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct urb *urb;
+ unsigned char *buf;
+ unsigned int pipe;
+ int err, size = HCI_MAX_FRAME_SIZE;
+
+ BT_DBG("%s", hdev->name);
+
+ if (!data->diag_rx_ep)
+ return -ENODEV;
+
+ urb = usb_alloc_urb(0, mem_flags);
+ if (!urb)
+ return -ENOMEM;
+
+ buf = kmalloc(size, mem_flags);
+ if (!buf) {
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
+
+ usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
+ btusb_diag_complete, hdev);
+
+ urb->transfer_flags |= URB_FREE_BUFFER;
+
+ usb_mark_last_busy(data->udev);
+ usb_anchor_urb(urb, &data->diag_anchor);
+
+ err = usb_submit_urb(urb, mem_flags);
+ if (err < 0) {
+ if (err != -EPERM && err != -ENODEV)
+ BT_ERR("%s urb %p submission failed (%d)",
+ hdev->name, urb, -err);
+ usb_unanchor_urb(urb);
+ }
+
+ usb_free_urb(urb);
+
+ return err;
+}
+
+static void btusb_tx_complete(struct urb *urb)
+{
+ struct sk_buff *skb = urb->context;
+ struct hci_dev *hdev = (struct hci_dev *)skb->dev;
+ struct btusb_data *data = hci_get_drvdata(hdev);
+
+ BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
+ urb->actual_length);
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ goto done;
+
+ if (!urb->status)
+ hdev->stat.byte_tx += urb->transfer_buffer_length;
+ else
+ hdev->stat.err_tx++;
+
+done:
+ spin_lock(&data->txlock);
+ data->tx_in_flight--;
+ spin_unlock(&data->txlock);
+
+ kfree(urb->setup_packet);
+
+ kfree_skb(skb);
+}
+
+static void btusb_isoc_tx_complete(struct urb *urb)
+{
+ struct sk_buff *skb = urb->context;
+ struct hci_dev *hdev = (struct hci_dev *)skb->dev;
+
+ BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
+ urb->actual_length);
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ goto done;
+
+ if (!urb->status)
+ hdev->stat.byte_tx += urb->transfer_buffer_length;
+ else
+ hdev->stat.err_tx++;
+
+done:
+ kfree(urb->setup_packet);
+
+ kfree_skb(skb);
+}
+
+static int btusb_open(struct hci_dev *hdev)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ int err;
+
+ BT_DBG("%s", hdev->name);
+
+ /* Patching USB firmware files prior to starting any URBs of HCI path
+ * It is more safe to use USB bulk channel for downloading USB patch
+ */
+ if (data->setup_on_usb) {
+ err = data->setup_on_usb(hdev);
+ if (err < 0)
+ return err;
+ }
+
+ err = usb_autopm_get_interface(data->intf);
+ if (err < 0)
+ return err;
+
+ data->intf->needs_remote_wakeup = 1;
+
+ if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
+ goto done;
+
+ err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
+ if (err < 0)
+ goto failed;
+
+ err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
+ if (err < 0) {
+ usb_kill_anchored_urbs(&data->intr_anchor);
+ goto failed;
+ }
+
+ set_bit(BTUSB_BULK_RUNNING, &data->flags);
+ btusb_submit_bulk_urb(hdev, GFP_KERNEL);
+
+ if (data->diag) {
+ if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
+ set_bit(BTUSB_DIAG_RUNNING, &data->flags);
+ }
+
+done:
+ usb_autopm_put_interface(data->intf);
+ return 0;
+
+failed:
+ clear_bit(BTUSB_INTR_RUNNING, &data->flags);
+ usb_autopm_put_interface(data->intf);
+ return err;
+}
+
+static void btusb_stop_traffic(struct btusb_data *data)
+{
+ usb_kill_anchored_urbs(&data->intr_anchor);
+ usb_kill_anchored_urbs(&data->bulk_anchor);
+ usb_kill_anchored_urbs(&data->isoc_anchor);
+ usb_kill_anchored_urbs(&data->diag_anchor);
+}
+
+static int btusb_close(struct hci_dev *hdev)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ int err;
+
+ BT_DBG("%s", hdev->name);
+
+ cancel_work_sync(&data->work);
+ cancel_work_sync(&data->waker);
+
+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+ clear_bit(BTUSB_BULK_RUNNING, &data->flags);
+ clear_bit(BTUSB_INTR_RUNNING, &data->flags);
+ clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
+
+ btusb_stop_traffic(data);
+ btusb_free_frags(data);
+
+ err = usb_autopm_get_interface(data->intf);
+ if (err < 0)
+ goto failed;
+
+ data->intf->needs_remote_wakeup = 0;
+ usb_autopm_put_interface(data->intf);
+
+failed:
+ usb_scuttle_anchored_urbs(&data->deferred);
+ return 0;
+}
+
+static int btusb_flush(struct hci_dev *hdev)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+
+ BT_DBG("%s", hdev->name);
+
+ usb_kill_anchored_urbs(&data->tx_anchor);
+ btusb_free_frags(data);
+
+ return 0;
+}
+
+static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct usb_ctrlrequest *dr;
+ struct urb *urb;
+ unsigned int pipe;
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb)
+ return ERR_PTR(-ENOMEM);
+
+ dr = kmalloc(sizeof(*dr), GFP_KERNEL);
+ if (!dr) {
+ usb_free_urb(urb);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ dr->bRequestType = data->cmdreq_type;
+ dr->bRequest = data->cmdreq;
+ dr->wIndex = 0;
+ dr->wValue = 0;
+ dr->wLength = __cpu_to_le16(skb->len);
+
+ pipe = usb_sndctrlpipe(data->udev, 0x00);
+
+ usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
+ skb->data, skb->len, btusb_tx_complete, skb);
+
+ skb->dev = (void *)hdev;
+
+ return urb;
+}
+
+static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct urb *urb;
+ unsigned int pipe;
+
+ if (!data->bulk_tx_ep)
+ return ERR_PTR(-ENODEV);
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb)
+ return ERR_PTR(-ENOMEM);
+
+ pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
+
+ usb_fill_bulk_urb(urb, data->udev, pipe,
+ skb->data, skb->len, btusb_tx_complete, skb);
+
+ skb->dev = (void *)hdev;
+
+ return urb;
+}
+
+static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct urb *urb;
+ unsigned int pipe;
+
+ if (!data->isoc_tx_ep)
+ return ERR_PTR(-ENODEV);
+
+ urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
+ if (!urb)
+ return ERR_PTR(-ENOMEM);
+
+ pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
+
+ usb_fill_int_urb(urb, data->udev, pipe,
+ skb->data, skb->len, btusb_isoc_tx_complete,
+ skb, data->isoc_tx_ep->bInterval);
+
+ urb->transfer_flags = URB_ISO_ASAP;
+
+ __fill_isoc_descriptor(urb, skb->len,
+ le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
+
+ skb->dev = (void *)hdev;
+
+ return urb;
+}
+
+static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ int err;
+
+ usb_anchor_urb(urb, &data->tx_anchor);
+
+ err = usb_submit_urb(urb, GFP_KERNEL);
+ if (err < 0) {
+ if (err != -EPERM && err != -ENODEV)
+ BT_ERR("%s urb %p submission failed (%d)",
+ hdev->name, urb, -err);
+ kfree(urb->setup_packet);
+ usb_unanchor_urb(urb);
+ } else {
+ usb_mark_last_busy(data->udev);
+ }
+
+ usb_free_urb(urb);
+ return err;
+}
+
+static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ unsigned long flags;
+ bool suspending;
+
+ spin_lock_irqsave(&data->txlock, flags);
+ suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
+ if (!suspending)
+ data->tx_in_flight++;
+ spin_unlock_irqrestore(&data->txlock, flags);
+
+ if (!suspending)
+ return submit_tx_urb(hdev, urb);
+
+ usb_anchor_urb(urb, &data->deferred);
+ schedule_work(&data->waker);
+
+ usb_free_urb(urb);
+ return 0;
+}
+
+static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct urb *urb;
+
+ BT_DBG("%s", hdev->name);
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_COMMAND_PKT:
+ urb = alloc_ctrl_urb(hdev, skb);
+ if (IS_ERR(urb))
+ return PTR_ERR(urb);
+
+ hdev->stat.cmd_tx++;
+ return submit_or_queue_tx_urb(hdev, urb);
+
+ case HCI_ACLDATA_PKT:
+ urb = alloc_bulk_urb(hdev, skb);
+ if (IS_ERR(urb))
+ return PTR_ERR(urb);
+
+ hdev->stat.acl_tx++;
+ return submit_or_queue_tx_urb(hdev, urb);
+
+ case HCI_SCODATA_PKT:
+ if (hci_conn_num(hdev, SCO_LINK) < 1)
+ return -ENODEV;
+
+ urb = alloc_isoc_urb(hdev, skb);
+ if (IS_ERR(urb))
+ return PTR_ERR(urb);
+
+ hdev->stat.sco_tx++;
+ return submit_tx_urb(hdev, urb);
+ }
+
+ return -EILSEQ;
+}
+
+static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+
+ BT_DBG("%s evt %d", hdev->name, evt);
+
+ if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
+ data->sco_num = hci_conn_num(hdev, SCO_LINK);
+ schedule_work(&data->work);
+ }
+}
+
+static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct usb_interface *intf = data->isoc;
+ struct usb_endpoint_descriptor *ep_desc;
+ int i, err;
+
+ if (!data->isoc)
+ return -ENODEV;
+
+ err = usb_set_interface(data->udev, 1, altsetting);
+ if (err < 0) {
+ BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
+ return err;
+ }
+
+ data->isoc_altsetting = altsetting;
+
+ data->isoc_tx_ep = NULL;
+ data->isoc_rx_ep = NULL;
+
+ for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
+ ep_desc = &intf->cur_altsetting->endpoint[i].desc;
+
+ if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
+ data->isoc_tx_ep = ep_desc;
+ continue;
+ }
+
+ if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
+ data->isoc_rx_ep = ep_desc;
+ continue;
+ }
+ }
+
+ if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
+ BT_ERR("%s invalid SCO descriptors", hdev->name);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void btusb_work(struct work_struct *work)
+{
+ struct btusb_data *data = container_of(work, struct btusb_data, work);
+ struct hci_dev *hdev = data->hdev;
+ int new_alts;
+ int err;
+
+ if (data->sco_num > 0) {
+ if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
+ err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
+ if (err < 0) {
+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+ usb_kill_anchored_urbs(&data->isoc_anchor);
+ return;
+ }
+
+ set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
+ }
+
+ if (hdev->voice_setting & 0x0020) {
+ static const int alts[3] = { 2, 4, 5 };
+
+ new_alts = alts[data->sco_num - 1];
+ } else {
+ new_alts = data->sco_num;
+ }
+
+ if (data->isoc_altsetting != new_alts) {
+ unsigned long flags;
+
+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+ usb_kill_anchored_urbs(&data->isoc_anchor);
+
+ /* When isochronous alternate setting needs to be
+ * changed, because SCO connection has been added
+ * or removed, a packet fragment may be left in the
+ * reassembling state. This could lead to wrongly
+ * assembled fragments.
+ *
+ * Clear outstanding fragment when selecting a new
+ * alternate setting.
+ */
+ spin_lock_irqsave(&data->rxlock, flags);
+ kfree_skb(data->sco_skb);
+ data->sco_skb = NULL;
+ spin_unlock_irqrestore(&data->rxlock, flags);
+
+ if (__set_isoc_interface(hdev, new_alts) < 0)
+ return;
+ }
+
+ if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
+ if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+ else
+ btusb_submit_isoc_urb(hdev, GFP_KERNEL);
+ }
+ } else {
+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+ usb_kill_anchored_urbs(&data->isoc_anchor);
+
+ __set_isoc_interface(hdev, 0);
+ if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
+ usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
+ }
+}
+
+static void btusb_waker(struct work_struct *work)
+{
+ struct btusb_data *data = container_of(work, struct btusb_data, waker);
+ int err;
+
+ err = usb_autopm_get_interface(data->intf);
+ if (err < 0)
+ return;
+
+ usb_autopm_put_interface(data->intf);
+}
+
+static int btusb_setup_bcm92035(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ u8 val = 0x00;
+
+ BT_DBG("%s", hdev->name);
+
+ skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb))
+ BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
+ else
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static int btusb_setup_csr(struct hci_dev *hdev)
+{
+ struct hci_rp_read_local_version *rp;
+ struct sk_buff *skb;
+
+ BT_DBG("%s", hdev->name);
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ int err = PTR_ERR(skb);
+ BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
+ return err;
+ }
+
+ if (skb->len != sizeof(struct hci_rp_read_local_version)) {
+ BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
+ kfree_skb(skb);
+ return -EIO;
+ }
+
+ rp = (struct hci_rp_read_local_version *)skb->data;
+
+ /* Detect controllers which aren't real CSR ones. */
+ if (le16_to_cpu(rp->manufacturer) != 10 ||
+ le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
+ /* Clear the reset quirk since this is not an actual
+ * early Bluetooth 1.1 device from CSR.
+ */
+ clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
+
+ /* These fake CSR controllers have all a broken
+ * stored link key handling and so just disable it.
+ */
+ set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
+ }
+
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
+ struct intel_version *ver)
+{
+ const struct firmware *fw;
+ char fwname[64];
+ int ret;
+
+ snprintf(fwname, sizeof(fwname),
+ "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
+ ver->hw_platform, ver->hw_variant, ver->hw_revision,
+ ver->fw_variant, ver->fw_revision, ver->fw_build_num,
+ ver->fw_build_ww, ver->fw_build_yy);
+
+ ret = request_firmware(&fw, fwname, &hdev->dev);
+ if (ret < 0) {
+ if (ret == -EINVAL) {
+ BT_ERR("%s Intel firmware file request failed (%d)",
+ hdev->name, ret);
+ return NULL;
+ }
+
+ BT_ERR("%s failed to open Intel firmware file: %s(%d)",
+ hdev->name, fwname, ret);
+
+ /* If the correct firmware patch file is not found, use the
+ * default firmware patch file instead
+ */
+ snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
+ ver->hw_platform, ver->hw_variant);
+ if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
+ BT_ERR("%s failed to open default Intel fw file: %s",
+ hdev->name, fwname);
+ return NULL;
+ }
+ }
+
+ BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
+
+ return fw;
+}
+
+static int btusb_setup_intel_patching(struct hci_dev *hdev,
+ const struct firmware *fw,
+ const u8 **fw_ptr, int *disable_patch)
+{
+ struct sk_buff *skb;
+ struct hci_command_hdr *cmd;
+ const u8 *cmd_param;
+ struct hci_event_hdr *evt = NULL;
+ const u8 *evt_param = NULL;
+ int remain = fw->size - (*fw_ptr - fw->data);
+
+ /* The first byte indicates the types of the patch command or event.
+ * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
+ * in the current firmware buffer doesn't start with 0x01 or
+ * the size of remain buffer is smaller than HCI command header,
+ * the firmware file is corrupted and it should stop the patching
+ * process.
+ */
+ if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
+ BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
+ return -EINVAL;
+ }
+ (*fw_ptr)++;
+ remain--;
+
+ cmd = (struct hci_command_hdr *)(*fw_ptr);
+ *fw_ptr += sizeof(*cmd);
+ remain -= sizeof(*cmd);
+
+ /* Ensure that the remain firmware data is long enough than the length
+ * of command parameter. If not, the firmware file is corrupted.
+ */
+ if (remain < cmd->plen) {
+ BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
+ return -EFAULT;
+ }
+
+ /* If there is a command that loads a patch in the firmware
+ * file, then enable the patch upon success, otherwise just
+ * disable the manufacturer mode, for example patch activation
+ * is not required when the default firmware patch file is used
+ * because there are no patch data to load.
+ */
+ if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
+ *disable_patch = 0;
+
+ cmd_param = *fw_ptr;
+ *fw_ptr += cmd->plen;
+ remain -= cmd->plen;
+
+ /* This reads the expected events when the above command is sent to the
+ * device. Some vendor commands expects more than one events, for
+ * example command status event followed by vendor specific event.
+ * For this case, it only keeps the last expected event. so the command
+ * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
+ * last expected event.
+ */
+ while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
+ (*fw_ptr)++;
+ remain--;
+
+ evt = (struct hci_event_hdr *)(*fw_ptr);
+ *fw_ptr += sizeof(*evt);
+ remain -= sizeof(*evt);
+
+ if (remain < evt->plen) {
+ BT_ERR("%s Intel fw corrupted: invalid evt len",
+ hdev->name);
+ return -EFAULT;
+ }
+
+ evt_param = *fw_ptr;
+ *fw_ptr += evt->plen;
+ remain -= evt->plen;
+ }
+
+ /* Every HCI commands in the firmware file has its correspond event.
+ * If event is not found or remain is smaller than zero, the firmware
+ * file is corrupted.
+ */
+ if (!evt || !evt_param || remain < 0) {
+ BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
+ return -EFAULT;
+ }
+
+ skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
+ cmd_param, evt->evt, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
+ hdev->name, cmd->opcode, PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+
+ /* It ensures that the returned event matches the event data read from
+ * the firmware file. At fist, it checks the length and then
+ * the contents of the event.
+ */
+ if (skb->len != evt->plen) {
+ BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
+ le16_to_cpu(cmd->opcode));
+ kfree_skb(skb);
+ return -EFAULT;
+ }
+
+ if (memcmp(skb->data, evt_param, evt->plen)) {
+ BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
+ hdev->name, le16_to_cpu(cmd->opcode));
+ kfree_skb(skb);
+ return -EFAULT;
+ }
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static int btusb_setup_intel(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ const struct firmware *fw;
+ const u8 *fw_ptr;
+ int disable_patch;
+ struct intel_version *ver;
+
+ const u8 mfg_enable[] = { 0x01, 0x00 };
+ const u8 mfg_disable[] = { 0x00, 0x00 };
+ const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
+ const u8 mfg_reset_activate[] = { 0x00, 0x02 };
+
+ BT_DBG("%s", hdev->name);
+
+ /* The controller has a bug with the first HCI command sent to it
+ * returning number of completed commands as zero. This would stall the
+ * command processing in the Bluetooth core.
+ *
+ * As a workaround, send HCI Reset command first which will reset the
+ * number of completed commands and allow normal command processing
+ * from now on.
+ */
+ skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s sending initial HCI reset command failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+ kfree_skb(skb);
+
+ /* Read Intel specific controller version first to allow selection of
+ * which firmware file to load.
+ *
+ * The returned information are hardware variant and revision plus
+ * firmware variant, revision and build number.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s reading Intel fw version command failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+
+ if (skb->len != sizeof(*ver)) {
+ BT_ERR("%s Intel version event length mismatch", hdev->name);
+ kfree_skb(skb);
+ return -EIO;
+ }
+
+ ver = (struct intel_version *)skb->data;
+
+ BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
+ hdev->name, ver->hw_platform, ver->hw_variant,
+ ver->hw_revision, ver->fw_variant, ver->fw_revision,
+ ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
+ ver->fw_patch_num);
+
+ /* fw_patch_num indicates the version of patch the device currently
+ * have. If there is no patch data in the device, it is always 0x00.
+ * So, if it is other than 0x00, no need to patch the device again.
+ */
+ if (ver->fw_patch_num) {
+ BT_INFO("%s: Intel device is already patched. patch num: %02x",
+ hdev->name, ver->fw_patch_num);
+ kfree_skb(skb);
+ goto complete;
+ }
+
+ /* Opens the firmware patch file based on the firmware version read
+ * from the controller. If it fails to open the matching firmware
+ * patch file, it tries to open the default firmware patch file.
+ * If no patch file is found, allow the device to operate without
+ * a patch.
+ */
+ fw = btusb_setup_intel_get_fw(hdev, ver);
+ if (!fw) {
+ kfree_skb(skb);
+ goto complete;
+ }
+ fw_ptr = fw->data;
+
+ kfree_skb(skb);
+
+ /* This Intel specific command enables the manufacturer mode of the
+ * controller.
+ *
+ * Only while this mode is enabled, the driver can download the
+ * firmware patch data and configuration parameters.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ release_firmware(fw);
+ return PTR_ERR(skb);
+ }
+
+ kfree_skb(skb);
+
+ disable_patch = 1;
+
+ /* The firmware data file consists of list of Intel specific HCI
+ * commands and its expected events. The first byte indicates the
+ * type of the message, either HCI command or HCI event.
+ *
+ * It reads the command and its expected event from the firmware file,
+ * and send to the controller. Once __hci_cmd_sync_ev() returns,
+ * the returned event is compared with the event read from the firmware
+ * file and it will continue until all the messages are downloaded to
+ * the controller.
+ *
+ * Once the firmware patching is completed successfully,
+ * the manufacturer mode is disabled with reset and activating the
+ * downloaded patch.
+ *
+ * If the firmware patching fails, the manufacturer mode is
+ * disabled with reset and deactivating the patch.
+ *
+ * If the default patch file is used, no reset is done when disabling
+ * the manufacturer.
+ */
+ while (fw->size > fw_ptr - fw->data) {
+ int ret;
+
+ ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
+ &disable_patch);
+ if (ret < 0)
+ goto exit_mfg_deactivate;
+ }
+
+ release_firmware(fw);
+
+ if (disable_patch)
+ goto exit_mfg_disable;
+
+ /* Patching completed successfully and disable the manufacturer mode
+ * with reset and activate the downloaded firmware patches.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
+ mfg_reset_activate, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+ kfree_skb(skb);
+
+ BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
+ hdev->name);
+
+ goto complete;
+
+exit_mfg_disable:
+ /* Disable the manufacturer mode without reset */
+ skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+ kfree_skb(skb);
+
+ BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
+
+ goto complete;
+
+exit_mfg_deactivate:
+ release_firmware(fw);
+
+ /* Patching failed. Disable the manufacturer mode with reset and
+ * deactivate the downloaded firmware patches.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
+ mfg_reset_deactivate, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+ kfree_skb(skb);
+
+ BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
+ hdev->name);
+
+complete:
+ /* Set the event mask for Intel specific vendor events. This enables
+ * a few extra events that are useful during general operation.
+ */
+ btintel_set_event_mask_mfg(hdev, false);
+
+ btintel_check_bdaddr(hdev);
+ return 0;
+}
+
+static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
+{
+ struct sk_buff *skb;
+ struct hci_event_hdr *hdr;
+ struct hci_ev_cmd_complete *evt;
+
+ skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
+ if (!skb)
+ return -ENOMEM;
+
+ hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
+ hdr->evt = HCI_EV_CMD_COMPLETE;
+ hdr->plen = sizeof(*evt) + 1;
+
+ evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
+ evt->ncmd = 0x01;
+ evt->opcode = cpu_to_le16(opcode);
+
+ *skb_put(skb, 1) = 0x00;
+
+ bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
+
+ return hci_recv_frame(hdev, skb);
+}
+
+static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
+ int count)
+{
+ /* When the device is in bootloader mode, then it can send
+ * events via the bulk endpoint. These events are treated the
+ * same way as the ones received from the interrupt endpoint.
+ */
+ if (test_bit(BTUSB_BOOTLOADER, &data->flags))
+ return btusb_recv_intr(data, buffer, count);
+
+ return btusb_recv_bulk(data, buffer, count);
+}
+
+static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
+ unsigned int len)
+{
+ const struct intel_bootup *evt = ptr;
+
+ if (len != sizeof(*evt))
+ return;
+
+ if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
+ smp_mb__after_atomic();
+ wake_up_bit(&data->flags, BTUSB_BOOTING);
+ }
+}
+
+static void btusb_intel_secure_send_result(struct btusb_data *data,
+ const void *ptr, unsigned int len)
+{
+ const struct intel_secure_send_result *evt = ptr;
+
+ if (len != sizeof(*evt))
+ return;
+
+ if (evt->result)
+ set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
+
+ if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
+ test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
+ smp_mb__after_atomic();
+ wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
+ }
+}
+
+static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+
+ if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
+ struct hci_event_hdr *hdr = (void *)skb->data;
+
+ if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
+ hdr->plen > 0) {
+ const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
+ unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
+
+ switch (skb->data[2]) {
+ case 0x02:
+ /* When switching to the operational firmware
+ * the device sends a vendor specific event
+ * indicating that the bootup completed.
+ */
+ btusb_intel_bootup(data, ptr, len);
+ break;
+ case 0x06:
+ /* When the firmware loading completes the
+ * device sends out a vendor specific event
+ * indicating the result of the firmware
+ * loading.
+ */
+ btusb_intel_secure_send_result(data, ptr, len);
+ break;
+ }
+ }
+ }
+
+ return hci_recv_frame(hdev, skb);
+}
+
+static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct urb *urb;
+
+ BT_DBG("%s", hdev->name);
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_COMMAND_PKT:
+ if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
+ struct hci_command_hdr *cmd = (void *)skb->data;
+ __u16 opcode = le16_to_cpu(cmd->opcode);
+
+ /* When in bootloader mode and the command 0xfc09
+ * is received, it needs to be send down the
+ * bulk endpoint. So allocate a bulk URB instead.
+ */
+ if (opcode == 0xfc09)
+ urb = alloc_bulk_urb(hdev, skb);
+ else
+ urb = alloc_ctrl_urb(hdev, skb);
+
+ /* When the 0xfc01 command is issued to boot into
+ * the operational firmware, it will actually not
+ * send a command complete event. To keep the flow
+ * control working inject that event here.
+ */
+ if (opcode == 0xfc01)
+ inject_cmd_complete(hdev, opcode);
+ } else {
+ urb = alloc_ctrl_urb(hdev, skb);
+ }
+ if (IS_ERR(urb))
+ return PTR_ERR(urb);
+
+ hdev->stat.cmd_tx++;
+ return submit_or_queue_tx_urb(hdev, urb);
+
+ case HCI_ACLDATA_PKT:
+ urb = alloc_bulk_urb(hdev, skb);
+ if (IS_ERR(urb))
+ return PTR_ERR(urb);
+
+ hdev->stat.acl_tx++;
+ return submit_or_queue_tx_urb(hdev, urb);
+
+ case HCI_SCODATA_PKT:
+ if (hci_conn_num(hdev, SCO_LINK) < 1)
+ return -ENODEV;
+
+ urb = alloc_isoc_urb(hdev, skb);
+ if (IS_ERR(urb))
+ return PTR_ERR(urb);
+
+ hdev->stat.sco_tx++;
+ return submit_tx_urb(hdev, urb);
+ }
+
+ return -EILSEQ;
+}
+
+static int btusb_setup_intel_new(struct hci_dev *hdev)
+{
+ static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
+ 0x00, 0x08, 0x04, 0x00 };
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct sk_buff *skb;
+ struct intel_version *ver;
+ struct intel_boot_params *params;
+ const struct firmware *fw;
+ const u8 *fw_ptr;
+ u32 frag_len;
+ char fwname[64];
+ ktime_t calltime, delta, rettime;
+ unsigned long long duration;
+ int err;
+
+ BT_DBG("%s", hdev->name);
+
+ calltime = ktime_get();
+
+ /* Read the Intel version information to determine if the device
+ * is in bootloader mode or if it already has operational firmware
+ * loaded.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s: Reading Intel version information failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+
+ if (skb->len != sizeof(*ver)) {
+ BT_ERR("%s: Intel version event size mismatch", hdev->name);
+ kfree_skb(skb);
+ return -EILSEQ;
+ }
+
+ ver = (struct intel_version *)skb->data;
+
+ /* The hardware platform number has a fixed value of 0x37 and
+ * for now only accept this single value.
+ */
+ if (ver->hw_platform != 0x37) {
+ BT_ERR("%s: Unsupported Intel hardware platform (%u)",
+ hdev->name, ver->hw_platform);
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ /* At the moment the iBT 3.0 hardware variants 0x0b (LnP/SfP)
+ * and 0x0c (WsP) are supported by this firmware loading method.
+ *
+ * This check has been put in place to ensure correct forward
+ * compatibility options when newer hardware variants come along.
+ */
+ if (ver->hw_variant != 0x0b && ver->hw_variant != 0x0c) {
+ BT_ERR("%s: Unsupported Intel hardware variant (%u)",
+ hdev->name, ver->hw_variant);
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ btintel_version_info(hdev, ver);
+
+ /* The firmware variant determines if the device is in bootloader
+ * mode or is running operational firmware. The value 0x06 identifies
+ * the bootloader and the value 0x23 identifies the operational
+ * firmware.
+ *
+ * When the operational firmware is already present, then only
+ * the check for valid Bluetooth device address is needed. This
+ * determines if the device will be added as configured or
+ * unconfigured controller.
+ *
+ * It is not possible to use the Secure Boot Parameters in this
+ * case since that command is only available in bootloader mode.
+ */
+ if (ver->fw_variant == 0x23) {
+ kfree_skb(skb);
+ clear_bit(BTUSB_BOOTLOADER, &data->flags);
+ btintel_check_bdaddr(hdev);
+ return 0;
+ }
+
+ /* If the device is not in bootloader mode, then the only possible
+ * choice is to return an error and abort the device initialization.
+ */
+ if (ver->fw_variant != 0x06) {
+ BT_ERR("%s: Unsupported Intel firmware variant (%u)",
+ hdev->name, ver->fw_variant);
+ kfree_skb(skb);
+ return -ENODEV;
+ }
+
+ kfree_skb(skb);
+
+ /* Read the secure boot parameters to identify the operating
+ * details of the bootloader.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+
+ if (skb->len != sizeof(*params)) {
+ BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
+ kfree_skb(skb);
+ return -EILSEQ;
+ }
+
+ params = (struct intel_boot_params *)skb->data;
+
+ BT_INFO("%s: Device revision is %u", hdev->name,
+ le16_to_cpu(params->dev_revid));
+
+ BT_INFO("%s: Secure boot is %s", hdev->name,
+ params->secure_boot ? "enabled" : "disabled");
+
+ BT_INFO("%s: OTP lock is %s", hdev->name,
+ params->otp_lock ? "enabled" : "disabled");
+
+ BT_INFO("%s: API lock is %s", hdev->name,
+ params->api_lock ? "enabled" : "disabled");
+
+ BT_INFO("%s: Debug lock is %s", hdev->name,
+ params->debug_lock ? "enabled" : "disabled");
+
+ BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
+ params->min_fw_build_nn, params->min_fw_build_cw,
+ 2000 + params->min_fw_build_yy);
+
+ /* It is required that every single firmware fragment is acknowledged
+ * with a command complete event. If the boot parameters indicate
+ * that this bootloader does not send them, then abort the setup.
+ */
+ if (params->limited_cce != 0x00) {
+ BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
+ hdev->name, params->limited_cce);
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ /* If the OTP has no valid Bluetooth device address, then there will
+ * also be no valid address for the operational firmware.
+ */
+ if (!bacmp(¶ms->otp_bdaddr, BDADDR_ANY)) {
+ BT_INFO("%s: No device address configured", hdev->name);
+ set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
+ }
+
+ /* With this Intel bootloader only the hardware variant and device
+ * revision information are used to select the right firmware.
+ *
+ * Currently this bootloader support is limited to hardware variant
+ * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
+ */
+ snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
+ le16_to_cpu(params->dev_revid));
+
+ err = request_firmware(&fw, fwname, &hdev->dev);
+ if (err < 0) {
+ BT_ERR("%s: Failed to load Intel firmware file (%d)",
+ hdev->name, err);
+ kfree_skb(skb);
+ return err;
+ }
+
+ BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
+
+ /* Save the DDC file name for later use to apply once the firmware
+ * downloading is done.
+ */
+ snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
+ le16_to_cpu(params->dev_revid));
+
+ kfree_skb(skb);
+
+ if (fw->size < 644) {
+ BT_ERR("%s: Invalid size of firmware file (%zu)",
+ hdev->name, fw->size);
+ err = -EBADF;
+ goto done;
+ }
+
+ set_bit(BTUSB_DOWNLOADING, &data->flags);
+
+ /* Start the firmware download transaction with the Init fragment
+ * represented by the 128 bytes of CSS header.
+ */
+ err = btintel_secure_send(hdev, 0x00, 128, fw->data);
+ if (err < 0) {
+ BT_ERR("%s: Failed to send firmware header (%d)",
+ hdev->name, err);
+ goto done;
+ }
+
+ /* Send the 256 bytes of public key information from the firmware
+ * as the PKey fragment.
+ */
+ err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
+ if (err < 0) {
+ BT_ERR("%s: Failed to send firmware public key (%d)",
+ hdev->name, err);
+ goto done;
+ }
+
+ /* Send the 256 bytes of signature information from the firmware
+ * as the Sign fragment.
+ */
+ err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
+ if (err < 0) {
+ BT_ERR("%s: Failed to send firmware signature (%d)",
+ hdev->name, err);
+ goto done;
+ }
+
+ fw_ptr = fw->data + 644;
+ frag_len = 0;
+
+ while (fw_ptr - fw->data < fw->size) {
+ struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
+
+ frag_len += sizeof(*cmd) + cmd->plen;
+
+ /* The parameter length of the secure send command requires
+ * a 4 byte alignment. It happens so that the firmware file
+ * contains proper Intel_NOP commands to align the fragments
+ * as needed.
+ *
+ * Send set of commands with 4 byte alignment from the
+ * firmware data buffer as a single Data fragement.
+ */
+ if (!(frag_len % 4)) {
+ err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
+ if (err < 0) {
+ BT_ERR("%s: Failed to send firmware data (%d)",
+ hdev->name, err);
+ goto done;
+ }
+
+ fw_ptr += frag_len;
+ frag_len = 0;
+ }
+ }
+
+ set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
+
+ BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
+
+ /* Before switching the device into operational mode and with that
+ * booting the loaded firmware, wait for the bootloader notification
+ * that all fragments have been successfully received.
+ *
+ * When the event processing receives the notification, then the
+ * BTUSB_DOWNLOADING flag will be cleared.
+ *
+ * The firmware loading should not take longer than 5 seconds
+ * and thus just timeout if that happens and fail the setup
+ * of this device.
+ */
+ err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
+ TASK_INTERRUPTIBLE,
+ msecs_to_jiffies(5000));
+ if (err == 1) {
+ BT_ERR("%s: Firmware loading interrupted", hdev->name);
+ err = -EINTR;
+ goto done;
+ }
+
+ if (err) {
+ BT_ERR("%s: Firmware loading timeout", hdev->name);
+ err = -ETIMEDOUT;
+ goto done;
+ }
+
+ if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
+ BT_ERR("%s: Firmware loading failed", hdev->name);
+ err = -ENOEXEC;
+ goto done;
+ }
+
+ rettime = ktime_get();
+ delta = ktime_sub(rettime, calltime);
+ duration = (unsigned long long) ktime_to_ns(delta) >> 10;
+
+ BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
+
+done:
+ release_firmware(fw);
+
+ if (err < 0)
+ return err;
+
+ calltime = ktime_get();
+
+ set_bit(BTUSB_BOOTING, &data->flags);
+
+ skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ kfree_skb(skb);
+
+ /* The bootloader will not indicate when the device is ready. This
+ * is done by the operational firmware sending bootup notification.
+ *
+ * Booting into operational firmware should not take longer than
+ * 1 second. However if that happens, then just fail the setup
+ * since something went wrong.
+ */
+ BT_INFO("%s: Waiting for device to boot", hdev->name);
+
+ err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
+ TASK_INTERRUPTIBLE,
+ msecs_to_jiffies(1000));
+
+ if (err == 1) {
+ BT_ERR("%s: Device boot interrupted", hdev->name);
+ return -EINTR;
+ }
+
+ if (err) {
+ BT_ERR("%s: Device boot timeout", hdev->name);
+ return -ETIMEDOUT;
+ }
+
+ rettime = ktime_get();
+ delta = ktime_sub(rettime, calltime);
+ duration = (unsigned long long) ktime_to_ns(delta) >> 10;
+
+ BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
+
+ clear_bit(BTUSB_BOOTLOADER, &data->flags);
+
+ /* Once the device is running in operational mode, it needs to apply
+ * the device configuration (DDC) parameters.
+ *
+ * The device can work without DDC parameters, so even if it fails
+ * to load the file, no need to fail the setup.
+ */
+ btintel_load_ddc_config(hdev, fwname);
+
+ /* Set the event mask for Intel specific vendor events. This enables
+ * a few extra events that are useful during general operation. It
+ * does not enable any debugging related events.
+ *
+ * The device will function correctly without these events enabled
+ * and thus no need to fail the setup.
+ */
+ btintel_set_event_mask(hdev, false);
+
+ return 0;
+}
+
+static int btusb_shutdown_intel(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ long ret;
+
+ /* Some platforms have an issue with BT LED when the interface is
+ * down or BT radio is turned off, which takes 5 seconds to BT LED
+ * goes off. This command turns off the BT LED immediately.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ ret = PTR_ERR(skb);
+ BT_ERR("%s: turning off Intel device LED failed (%ld)",
+ hdev->name, ret);
+ return ret;
+ }
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
+ const bdaddr_t *bdaddr)
+{
+ struct sk_buff *skb;
+ u8 buf[8];
+ long ret;
+
+ buf[0] = 0xfe;
+ buf[1] = sizeof(bdaddr_t);
+ memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
+
+ skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ ret = PTR_ERR(skb);
+ BT_ERR("%s: changing Marvell device address failed (%ld)",
+ hdev->name, ret);
+ return ret;
+ }
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
+ const bdaddr_t *bdaddr)
+{
+ struct sk_buff *skb;
+ u8 buf[10];
+ long ret;
+
+ buf[0] = 0x01;
+ buf[1] = 0x01;
+ buf[2] = 0x00;
+ buf[3] = sizeof(bdaddr_t);
+ memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
+
+ skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ ret = PTR_ERR(skb);
+ BT_ERR("%s: Change address command failed (%ld)",
+ hdev->name, ret);
+ return ret;
+ }
+ kfree_skb(skb);
+
+ return 0;
+}
+
+#define QCA_DFU_PACKET_LEN 4096
+
+#define QCA_GET_TARGET_VERSION 0x09
+#define QCA_CHECK_STATUS 0x05
+#define QCA_DFU_DOWNLOAD 0x01
+
+#define QCA_SYSCFG_UPDATED 0x40
+#define QCA_PATCH_UPDATED 0x80
+#define QCA_DFU_TIMEOUT 3000
+
+struct qca_version {
+ __le32 rom_version;
+ __le32 patch_version;
+ __le32 ram_version;
+ __le32 ref_clock;
+ __u8 reserved[4];
+} __packed;
+
+struct qca_rampatch_version {
+ __le16 rom_version;
+ __le16 patch_version;
+} __packed;
+
+struct qca_device_info {
+ u32 rom_version;
+ u8 rampatch_hdr; /* length of header in rampatch */
+ u8 nvm_hdr; /* length of header in NVM */
+ u8 ver_offset; /* offset of version structure in rampatch */
+};
+
+static const struct qca_device_info qca_devices_table[] = {
+ { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
+ { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
+ { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
+ { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
+ { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
+ { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
+};
+
+static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
+ void *data, u16 size)
+{
+ struct btusb_data *btdata = hci_get_drvdata(hdev);
+ struct usb_device *udev = btdata->udev;
+ int pipe, err;
+ u8 *buf;
+
+ buf = kmalloc(size, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ /* Found some of USB hosts have IOT issues with ours so that we should
+ * not wait until HCI layer is ready.
+ */
+ pipe = usb_rcvctrlpipe(udev, 0);
+ err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
+ 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
+ if (err < 0) {
+ BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
+ goto done;
+ }
+
+ memcpy(data, buf, size);
+
+done:
+ kfree(buf);
+
+ return err;
+}
+
+static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
+ const struct firmware *firmware,
+ size_t hdr_size)
+{
+ struct btusb_data *btdata = hci_get_drvdata(hdev);
+ struct usb_device *udev = btdata->udev;
+ size_t count, size, sent = 0;
+ int pipe, len, err;
+ u8 *buf;
+
+ buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ count = firmware->size;
+
+ size = min_t(size_t, count, hdr_size);
+ memcpy(buf, firmware->data, size);
+
+ /* USB patches should go down to controller through USB path
+ * because binary format fits to go down through USB channel.
+ * USB control path is for patching headers and USB bulk is for
+ * patch body.
+ */
+ pipe = usb_sndctrlpipe(udev, 0);
+ err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
+ 0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
+ if (err < 0) {
+ BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
+ goto done;
+ }
+
+ sent += size;
+ count -= size;
+
+ while (count) {
+ size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
+
+ memcpy(buf, firmware->data + sent, size);
+
+ pipe = usb_sndbulkpipe(udev, 0x02);
+ err = usb_bulk_msg(udev, pipe, buf, size, &len,
+ QCA_DFU_TIMEOUT);
+ if (err < 0) {
+ BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
+ hdev->name, sent, firmware->size, err);
+ break;
+ }
+
+ if (size != len) {
+ BT_ERR("%s: Failed to get bulk buffer", hdev->name);
+ err = -EILSEQ;
+ break;
+ }
+
+ sent += size;
+ count -= size;
+ }
+
+done:
+ kfree(buf);
+ return err;
+}
+
+static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
+ struct qca_version *ver,
+ const struct qca_device_info *info)
+{
+ struct qca_rampatch_version *rver;
+ const struct firmware *fw;
+ u32 ver_rom, ver_patch;
+ u16 rver_rom, rver_patch;
+ char fwname[64];
+ int err;
+
+ ver_rom = le32_to_cpu(ver->rom_version);
+ ver_patch = le32_to_cpu(ver->patch_version);
+
+ snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
+
+ err = request_firmware(&fw, fwname, &hdev->dev);
+ if (err) {
+ BT_ERR("%s: failed to request rampatch file: %s (%d)",
+ hdev->name, fwname, err);
+ return err;
+ }
+
+ BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
+
+ rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
+ rver_rom = le16_to_cpu(rver->rom_version);
+ rver_patch = le16_to_cpu(rver->patch_version);
+
+ BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
+ "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
+ ver_patch);
+
+ if (rver_rom != ver_rom || rver_patch <= ver_patch) {
+ BT_ERR("%s: rampatch file version did not match with firmware",
+ hdev->name);
+ err = -EINVAL;
+ goto done;
+ }
+
+ err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
+
+done:
+ release_firmware(fw);
+
+ return err;
+}
+
+static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
+ struct qca_version *ver,
+ const struct qca_device_info *info)
+{
+ const struct firmware *fw;
+ char fwname[64];
+ int err;
+
+ snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
+ le32_to_cpu(ver->rom_version));
+
+ err = request_firmware(&fw, fwname, &hdev->dev);
+ if (err) {
+ BT_ERR("%s: failed to request NVM file: %s (%d)",
+ hdev->name, fwname, err);
+ return err;
+ }
+
+ BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
+
+ err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
+
+ release_firmware(fw);
+
+ return err;
+}
+
+static int btusb_setup_qca(struct hci_dev *hdev)
+{
+ const struct qca_device_info *info = NULL;
+ struct qca_version ver;
+ u32 ver_rom;
+ u8 status;
+ int i, err;
+
+ err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
+ sizeof(ver));
+ if (err < 0)
+ return err;
+
+ ver_rom = le32_to_cpu(ver.rom_version);
+ for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
+ if (ver_rom == qca_devices_table[i].rom_version)
+ info = &qca_devices_table[i];
+ }
+ if (!info) {
+ BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
+ ver_rom);
+ return -ENODEV;
+ }
+
+ err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
+ sizeof(status));
+ if (err < 0)
+ return err;
+
+ if (!(status & QCA_PATCH_UPDATED)) {
+ err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
+ if (err < 0)
+ return err;
+ }
+
+ if (!(status & QCA_SYSCFG_UPDATED)) {
+ err = btusb_setup_qca_load_nvm(hdev, &ver, info);
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_BT_HCIBTUSB_BCM
+static inline int __set_diag_interface(struct hci_dev *hdev)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct usb_interface *intf = data->diag;
+ int i;
+
+ if (!data->diag)
+ return -ENODEV;
+
+ data->diag_tx_ep = NULL;
+ data->diag_rx_ep = NULL;
+
+ for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
+ struct usb_endpoint_descriptor *ep_desc;
+
+ ep_desc = &intf->cur_altsetting->endpoint[i].desc;
+
+ if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
+ data->diag_tx_ep = ep_desc;
+ continue;
+ }
+
+ if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
+ data->diag_rx_ep = ep_desc;
+ continue;
+ }
+ }
+
+ if (!data->diag_tx_ep || !data->diag_rx_ep) {
+ BT_ERR("%s invalid diagnostic descriptors", hdev->name);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct sk_buff *skb;
+ struct urb *urb;
+ unsigned int pipe;
+
+ if (!data->diag_tx_ep)
+ return ERR_PTR(-ENODEV);
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb)
+ return ERR_PTR(-ENOMEM);
+
+ skb = bt_skb_alloc(2, GFP_KERNEL);
+ if (!skb) {
+ usb_free_urb(urb);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ *skb_put(skb, 1) = 0xf0;
+ *skb_put(skb, 1) = enable;
+
+ pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
+
+ usb_fill_bulk_urb(urb, data->udev, pipe,
+ skb->data, skb->len, btusb_tx_complete, skb);
+
+ skb->dev = (void *)hdev;
+
+ return urb;
+}
+
+static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct urb *urb;
+
+ if (!data->diag)
+ return -ENODEV;
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ return -ENETDOWN;
+
+ urb = alloc_diag_urb(hdev, enable);
+ if (IS_ERR(urb))
+ return PTR_ERR(urb);
+
+ return submit_or_queue_tx_urb(hdev, urb);
+}
+#endif
+
+static int btusb_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_endpoint_descriptor *ep_desc;
+ struct btusb_data *data;
+ struct hci_dev *hdev;
+ unsigned ifnum_base;
+ int i, err;
+
+ BT_DBG("intf %p id %p", intf, id);
+
+ /* interface numbers are hardcoded in the spec */
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
+ if (!(id->driver_info & BTUSB_IFNUM_2))
+ return -ENODEV;
+ if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
+ return -ENODEV;
+ }
+
+ ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
+
+ if (!id->driver_info) {
+ const struct usb_device_id *match;
+
+ match = usb_match_id(intf, blacklist_table);
+ if (match)
+ id = match;
+ }
+
+ if (id->driver_info == BTUSB_IGNORE)
+ return -ENODEV;
+
+ if (id->driver_info & BTUSB_ATH3012) {
+ struct usb_device *udev = interface_to_usbdev(intf);
+
+ /* Old firmware would otherwise let ath3k driver load
+ * patch and sysconfig files */
+ if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
+ return -ENODEV;
+ }
+
+ data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
+ ep_desc = &intf->cur_altsetting->endpoint[i].desc;
+
+ if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
+ data->intr_ep = ep_desc;
+ continue;
+ }
+
+ if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
+ data->bulk_tx_ep = ep_desc;
+ continue;
+ }
+
+ if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
+ data->bulk_rx_ep = ep_desc;
+ continue;
+ }
+ }
+
+ if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
+ return -ENODEV;
+
+ if (id->driver_info & BTUSB_AMP) {
+ data->cmdreq_type = USB_TYPE_CLASS | 0x01;
+ data->cmdreq = 0x2b;
+ } else {
+ data->cmdreq_type = USB_TYPE_CLASS;
+ data->cmdreq = 0x00;
+ }
+
+ data->udev = interface_to_usbdev(intf);
+ data->intf = intf;
+
+ INIT_WORK(&data->work, btusb_work);
+ INIT_WORK(&data->waker, btusb_waker);
+ init_usb_anchor(&data->deferred);
+ init_usb_anchor(&data->tx_anchor);
+ spin_lock_init(&data->txlock);
+
+ init_usb_anchor(&data->intr_anchor);
+ init_usb_anchor(&data->bulk_anchor);
+ init_usb_anchor(&data->isoc_anchor);
+ init_usb_anchor(&data->diag_anchor);
+ spin_lock_init(&data->rxlock);
+
+ if (id->driver_info & BTUSB_INTEL_NEW) {
+ data->recv_event = btusb_recv_event_intel;
+ data->recv_bulk = btusb_recv_bulk_intel;
+ set_bit(BTUSB_BOOTLOADER, &data->flags);
+ } else {
+ data->recv_event = hci_recv_frame;
+ data->recv_bulk = btusb_recv_bulk;
+ }
+
+ hdev = hci_alloc_dev();
+ if (!hdev)
+ return -ENOMEM;
+
+ hdev->bus = HCI_USB;
+ hci_set_drvdata(hdev, data);
+
+ if (id->driver_info & BTUSB_AMP)
+ hdev->dev_type = HCI_AMP;
+ else
+ hdev->dev_type = HCI_BREDR;
+
+ data->hdev = hdev;
+
+ SET_HCIDEV_DEV(hdev, &intf->dev);
+
+ hdev->open = btusb_open;
+ hdev->close = btusb_close;
+ hdev->flush = btusb_flush;
+ hdev->send = btusb_send_frame;
+ hdev->notify = btusb_notify;
+
+ if (id->driver_info & BTUSB_BCM2045)
+ set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
+
+ if (id->driver_info & BTUSB_BCM92035)
+ hdev->setup = btusb_setup_bcm92035;
+
+#ifdef CONFIG_BT_HCIBTUSB_BCM
+ if (id->driver_info & BTUSB_BCM_PATCHRAM) {
+ hdev->manufacturer = 15;
+ hdev->setup = btbcm_setup_patchram;
+ hdev->set_diag = btusb_bcm_set_diag;
+ hdev->set_bdaddr = btbcm_set_bdaddr;
+
+ /* Broadcom LM_DIAG Interface numbers are hardcoded */
+ data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
+ }
+
+ if (id->driver_info & BTUSB_BCM_APPLE) {
+ hdev->manufacturer = 15;
+ hdev->setup = btbcm_setup_apple;
+ hdev->set_diag = btusb_bcm_set_diag;
+
+ /* Broadcom LM_DIAG Interface numbers are hardcoded */
+ data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
+ }
+#endif
+
+ if (id->driver_info & BTUSB_INTEL) {
+ hdev->manufacturer = 2;
+ hdev->setup = btusb_setup_intel;
+ hdev->shutdown = btusb_shutdown_intel;
+ hdev->set_diag = btintel_set_diag_mfg;
+ hdev->set_bdaddr = btintel_set_bdaddr;
+ set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
+ set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
+ set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
+ }
+
+ if (id->driver_info & BTUSB_INTEL_NEW) {
+ hdev->manufacturer = 2;
+ hdev->send = btusb_send_frame_intel;
+ hdev->setup = btusb_setup_intel_new;
+ hdev->hw_error = btintel_hw_error;
+ hdev->set_diag = btintel_set_diag;
+ hdev->set_bdaddr = btintel_set_bdaddr;
+ set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
+ set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
+ }
+
+ if (id->driver_info & BTUSB_MARVELL)
+ hdev->set_bdaddr = btusb_set_bdaddr_marvell;
+
+ if (id->driver_info & BTUSB_SWAVE) {
+ set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
+ set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
+ }
+
+ if (id->driver_info & BTUSB_INTEL_BOOT) {
+ hdev->manufacturer = 2;
+ set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
+ }
+
+ if (id->driver_info & BTUSB_ATH3012) {
+ hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
+ set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
+ set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
+ }
+
+ if (id->driver_info & BTUSB_QCA_ROME) {
+ data->setup_on_usb = btusb_setup_qca;
+ hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
+
+ /* QCA Rome devices lose their updated firmware over suspend,
+ * but the USB hub doesn't notice any status change.
+ * Explicitly request a device reset on resume.
+ */
+ set_bit(BTUSB_RESET_RESUME, &data->flags);
+ }
+
+#ifdef CONFIG_BT_HCIBTUSB_RTL
+ if (id->driver_info & BTUSB_REALTEK) {
+ hdev->setup = btrtl_setup_realtek;
+
+ /* Realtek devices lose their updated firmware over suspend,
+ * but the USB hub doesn't notice any status change.
+ * Explicitly request a device reset on resume.
+ */
+ set_bit(BTUSB_RESET_RESUME, &data->flags);
+ }
+#endif
+
+ if (id->driver_info & BTUSB_AMP) {
+ /* AMP controllers do not support SCO packets */
+ data->isoc = NULL;
+ } else {
+ /* Interface orders are hardcoded in the specification */
+ data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
+ }
+
+ if (!reset)
+ set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
+
+ if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
+ if (!disable_scofix)
+ set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
+ }
+
+ if (id->driver_info & BTUSB_BROKEN_ISOC)
+ data->isoc = NULL;
+
+ if (id->driver_info & BTUSB_DIGIANSWER) {
+ data->cmdreq_type = USB_TYPE_VENDOR;
+ set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
+ }
+
+ if (id->driver_info & BTUSB_CSR) {
+ struct usb_device *udev = data->udev;
+ u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
+
+ /* Old firmware would otherwise execute USB reset */
+ if (bcdDevice < 0x117)
+ set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
+
+ /* Fake CSR devices with broken commands */
+ if (bcdDevice <= 0x100 || bcdDevice == 0x134)
+ hdev->setup = btusb_setup_csr;
+
+ set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
+ }
+
+ if (id->driver_info & BTUSB_SNIFFER) {
+ struct usb_device *udev = data->udev;
+
+ /* New sniffer firmware has crippled HCI interface */
+ if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
+ set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
+ }
+
+ if (id->driver_info & BTUSB_INTEL_BOOT) {
+ /* A bug in the bootloader causes that interrupt interface is
+ * only enabled after receiving SetInterface(0, AltSetting=0).
+ */
+ err = usb_set_interface(data->udev, 0, 0);
+ if (err < 0) {
+ BT_ERR("failed to set interface 0, alt 0 %d", err);
+ hci_free_dev(hdev);
+ return err;
+ }
+ }
+
+ if (data->isoc) {
+ err = usb_driver_claim_interface(&btusb_driver,
+ data->isoc, data);
+ if (err < 0) {
+ hci_free_dev(hdev);
+ return err;
+ }
+ }
+
+#ifdef CONFIG_BT_HCIBTUSB_BCM
+ if (data->diag) {
+ if (!usb_driver_claim_interface(&btusb_driver,
+ data->diag, data))
+ __set_diag_interface(hdev);
+ else
+ data->diag = NULL;
+ }
+#endif
+
+ err = hci_register_dev(hdev);
+ if (err < 0) {
+ hci_free_dev(hdev);
+ return err;
+ }
+
+ usb_set_intfdata(intf, data);
+
+ return 0;
+}
+
+static void btusb_disconnect(struct usb_interface *intf)
+{
+ struct btusb_data *data = usb_get_intfdata(intf);
+ struct hci_dev *hdev;
+
+ BT_DBG("intf %p", intf);
+
+ if (!data)
+ return;
+
+ hdev = data->hdev;
+ usb_set_intfdata(data->intf, NULL);
+
+ if (data->isoc)
+ usb_set_intfdata(data->isoc, NULL);
+
+ if (data->diag)
+ usb_set_intfdata(data->diag, NULL);
+
+ hci_unregister_dev(hdev);
+
+ if (intf == data->intf) {
+ if (data->isoc)
+ usb_driver_release_interface(&btusb_driver, data->isoc);
+ if (data->diag)
+ usb_driver_release_interface(&btusb_driver, data->diag);
+ } else if (intf == data->isoc) {
+ if (data->diag)
+ usb_driver_release_interface(&btusb_driver, data->diag);
+ usb_driver_release_interface(&btusb_driver, data->intf);
+ } else if (intf == data->diag) {
+ usb_driver_release_interface(&btusb_driver, data->intf);
+ if (data->isoc)
+ usb_driver_release_interface(&btusb_driver, data->isoc);
+ }
+
+ hci_free_dev(hdev);
+}
+
+#ifdef CONFIG_PM
+static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct btusb_data *data = usb_get_intfdata(intf);
+
+ BT_DBG("intf %p", intf);
+
+ if (data->suspend_count++)
+ return 0;
+
+ spin_lock_irq(&data->txlock);
+ if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
+ set_bit(BTUSB_SUSPENDING, &data->flags);
+ spin_unlock_irq(&data->txlock);
+ } else {
+ spin_unlock_irq(&data->txlock);
+ data->suspend_count--;
+ return -EBUSY;
+ }
+
+ cancel_work_sync(&data->work);
+
+ btusb_stop_traffic(data);
+ usb_kill_anchored_urbs(&data->tx_anchor);
+
+ /* Optionally request a device reset on resume, but only when
+ * wakeups are disabled. If wakeups are enabled we assume the
+ * device will stay powered up throughout suspend.
+ */
+ if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
+ !device_may_wakeup(&data->udev->dev))
+ data->udev->reset_resume = 1;
+
+ return 0;
+}
+
+static void play_deferred(struct btusb_data *data)
+{
+ struct urb *urb;
+ int err;
+
+ while ((urb = usb_get_from_anchor(&data->deferred))) {
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0)
+ break;
+
+ data->tx_in_flight++;
+ }
+ usb_scuttle_anchored_urbs(&data->deferred);
+}
+
+static int btusb_resume(struct usb_interface *intf)
+{
+ struct btusb_data *data = usb_get_intfdata(intf);
+ struct hci_dev *hdev = data->hdev;
+ int err = 0;
+
+ BT_DBG("intf %p", intf);
+
+ if (--data->suspend_count)
+ return 0;
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ goto done;
+
+ if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
+ err = btusb_submit_intr_urb(hdev, GFP_NOIO);
+ if (err < 0) {
+ clear_bit(BTUSB_INTR_RUNNING, &data->flags);
+ goto failed;
+ }
+ }
+
+ if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
+ err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
+ if (err < 0) {
+ clear_bit(BTUSB_BULK_RUNNING, &data->flags);
+ goto failed;
+ }
+
+ btusb_submit_bulk_urb(hdev, GFP_NOIO);
+ }
+
+ if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
+ if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
+ clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
+ else
+ btusb_submit_isoc_urb(hdev, GFP_NOIO);
+ }
+
+ spin_lock_irq(&data->txlock);
+ play_deferred(data);
+ clear_bit(BTUSB_SUSPENDING, &data->flags);
+ spin_unlock_irq(&data->txlock);
+ schedule_work(&data->work);
+
+ return 0;
+
+failed:
+ usb_scuttle_anchored_urbs(&data->deferred);
+done:
+ spin_lock_irq(&data->txlock);
+ clear_bit(BTUSB_SUSPENDING, &data->flags);
+ spin_unlock_irq(&data->txlock);
+
+ return err;
+}
+#endif
+
+static struct usb_driver btusb_driver = {
+ .name = "btusb",
+ .probe = btusb_probe,
+ .disconnect = btusb_disconnect,
+#ifdef CONFIG_PM
+ .suspend = btusb_suspend,
+ .resume = btusb_resume,
+#endif
+ .id_table = btusb_table,
+ .supports_autosuspend = 1,
+ .disable_hub_initiated_lpm = 1,
+};
+
+module_usb_driver(btusb_driver);
+
+module_param(disable_scofix, bool, 0644);
+MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
+
+module_param(force_scofix, bool, 0644);
+MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
+
+module_param(reset, bool, 0644);
+MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
diff --git a/drivers/bluetooth/btwilink.c b/drivers/bluetooth/btwilink.c
new file mode 100644
index 0000000..57eb935
--- /dev/null
+++ b/drivers/bluetooth/btwilink.c
@@ -0,0 +1,349 @@
+/*
+ * Texas Instrument's Bluetooth Driver For Shared Transport.
+ *
+ * Bluetooth Driver acts as interface between HCI core and
+ * TI Shared Transport Layer.
+ *
+ * Copyright (C) 2009-2010 Texas Instruments
+ * Author: Raja Mani <raja_mani@ti.com>
+ * Pavan Savoy <pavan_savoy@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include <net/bluetooth/hci.h>
+
+#include <linux/ti_wilink_st.h>
+#include <linux/module.h>
+
+/* Bluetooth Driver Version */
+#define VERSION "1.0"
+#define MAX_BT_CHNL_IDS 3
+
+/* Number of seconds to wait for registration completion
+ * when ST returns PENDING status.
+ */
+#define BT_REGISTER_TIMEOUT 6000 /* 6 sec */
+
+/**
+ * struct ti_st - driver operation structure
+ * @hdev: hci device pointer which binds to bt driver
+ * @reg_status: ST registration callback status
+ * @st_write: write function provided by the ST driver
+ * to be used by the driver during send_frame.
+ * @wait_reg_completion - completion sync between ti_st_open
+ * and st_reg_completion_cb.
+ */
+struct ti_st {
+ struct hci_dev *hdev;
+ char reg_status;
+ long (*st_write) (struct sk_buff *);
+ struct completion wait_reg_completion;
+};
+
+/* Increments HCI counters based on pocket ID (cmd,acl,sco) */
+static inline void ti_st_tx_complete(struct ti_st *hst, int pkt_type)
+{
+ struct hci_dev *hdev = hst->hdev;
+
+ /* Update HCI stat counters */
+ switch (pkt_type) {
+ case HCI_COMMAND_PKT:
+ hdev->stat.cmd_tx++;
+ break;
+
+ case HCI_ACLDATA_PKT:
+ hdev->stat.acl_tx++;
+ break;
+
+ case HCI_SCODATA_PKT:
+ hdev->stat.sco_tx++;
+ break;
+ }
+}
+
+/* ------- Interfaces to Shared Transport ------ */
+
+/* Called by ST layer to indicate protocol registration completion
+ * status.ti_st_open() function will wait for signal from this
+ * API when st_register() function returns ST_PENDING.
+ */
+static void st_reg_completion_cb(void *priv_data, char data)
+{
+ struct ti_st *lhst = priv_data;
+
+ /* Save registration status for use in ti_st_open() */
+ lhst->reg_status = data;
+ /* complete the wait in ti_st_open() */
+ complete(&lhst->wait_reg_completion);
+}
+
+/* Called by Shared Transport layer when receive data is
+ * available */
+static long st_receive(void *priv_data, struct sk_buff *skb)
+{
+ struct ti_st *lhst = priv_data;
+ int err;
+
+ if (!skb)
+ return -EFAULT;
+
+ if (!lhst) {
+ kfree_skb(skb);
+ return -EFAULT;
+ }
+
+ /* Forward skb to HCI core layer */
+ err = hci_recv_frame(lhst->hdev, skb);
+ if (err < 0) {
+ BT_ERR("Unable to push skb to HCI core(%d)", err);
+ return err;
+ }
+
+ lhst->hdev->stat.byte_rx += skb->len;
+
+ return 0;
+}
+
+/* ------- Interfaces to HCI layer ------ */
+/* protocol structure registered with shared transport */
+static struct st_proto_s ti_st_proto[MAX_BT_CHNL_IDS] = {
+ {
+ .chnl_id = HCI_EVENT_PKT, /* HCI Events */
+ .hdr_len = sizeof(struct hci_event_hdr),
+ .offset_len_in_hdr = offsetof(struct hci_event_hdr, plen),
+ .len_size = 1, /* sizeof(plen) in struct hci_event_hdr */
+ .reserve = 8,
+ },
+ {
+ .chnl_id = HCI_ACLDATA_PKT, /* ACL */
+ .hdr_len = sizeof(struct hci_acl_hdr),
+ .offset_len_in_hdr = offsetof(struct hci_acl_hdr, dlen),
+ .len_size = 2, /* sizeof(dlen) in struct hci_acl_hdr */
+ .reserve = 8,
+ },
+ {
+ .chnl_id = HCI_SCODATA_PKT, /* SCO */
+ .hdr_len = sizeof(struct hci_sco_hdr),
+ .offset_len_in_hdr = offsetof(struct hci_sco_hdr, dlen),
+ .len_size = 1, /* sizeof(dlen) in struct hci_sco_hdr */
+ .reserve = 8,
+ },
+};
+
+/* Called from HCI core to initialize the device */
+static int ti_st_open(struct hci_dev *hdev)
+{
+ unsigned long timeleft;
+ struct ti_st *hst;
+ int err, i;
+
+ BT_DBG("%s %p", hdev->name, hdev);
+
+ /* provide contexts for callbacks from ST */
+ hst = hci_get_drvdata(hdev);
+
+ for (i = 0; i < MAX_BT_CHNL_IDS; i++) {
+ ti_st_proto[i].priv_data = hst;
+ ti_st_proto[i].max_frame_size = HCI_MAX_FRAME_SIZE;
+ ti_st_proto[i].recv = st_receive;
+ ti_st_proto[i].reg_complete_cb = st_reg_completion_cb;
+
+ /* Prepare wait-for-completion handler */
+ init_completion(&hst->wait_reg_completion);
+ /* Reset ST registration callback status flag,
+ * this value will be updated in
+ * st_reg_completion_cb()
+ * function whenever it called from ST driver.
+ */
+ hst->reg_status = -EINPROGRESS;
+
+ err = st_register(&ti_st_proto[i]);
+ if (!err)
+ goto done;
+
+ if (err != -EINPROGRESS) {
+ BT_ERR("st_register failed %d", err);
+ return err;
+ }
+
+ /* ST is busy with either protocol
+ * registration or firmware download.
+ */
+ BT_DBG("waiting for registration "
+ "completion signal from ST");
+ timeleft = wait_for_completion_timeout
+ (&hst->wait_reg_completion,
+ msecs_to_jiffies(BT_REGISTER_TIMEOUT));
+ if (!timeleft) {
+ BT_ERR("Timeout(%d sec),didn't get reg "
+ "completion signal from ST",
+ BT_REGISTER_TIMEOUT / 1000);
+ return -ETIMEDOUT;
+ }
+
+ /* Is ST registration callback
+ * called with ERROR status? */
+ if (hst->reg_status != 0) {
+ BT_ERR("ST registration completed with invalid "
+ "status %d", hst->reg_status);
+ return -EAGAIN;
+ }
+
+done:
+ hst->st_write = ti_st_proto[i].write;
+ if (!hst->st_write) {
+ BT_ERR("undefined ST write function");
+ for (i = 0; i < MAX_BT_CHNL_IDS; i++) {
+ /* Undo registration with ST */
+ err = st_unregister(&ti_st_proto[i]);
+ if (err)
+ BT_ERR("st_unregister() failed with "
+ "error %d", err);
+ hst->st_write = NULL;
+ }
+ return -EIO;
+ }
+ }
+ return 0;
+}
+
+/* Close device */
+static int ti_st_close(struct hci_dev *hdev)
+{
+ int err, i;
+ struct ti_st *hst = hci_get_drvdata(hdev);
+
+ for (i = MAX_BT_CHNL_IDS-1; i >= 0; i--) {
+ err = st_unregister(&ti_st_proto[i]);
+ if (err)
+ BT_ERR("st_unregister(%d) failed with error %d",
+ ti_st_proto[i].chnl_id, err);
+ }
+
+ hst->st_write = NULL;
+
+ return err;
+}
+
+static int ti_st_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct ti_st *hst;
+ long len;
+
+ hst = hci_get_drvdata(hdev);
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+
+ BT_DBG("%s: type %d len %d", hdev->name, bt_cb(skb)->pkt_type,
+ skb->len);
+
+ /* Insert skb to shared transport layer's transmit queue.
+ * Freeing skb memory is taken care in shared transport layer,
+ * so don't free skb memory here.
+ */
+ len = hst->st_write(skb);
+ if (len < 0) {
+ kfree_skb(skb);
+ BT_ERR("ST write failed (%ld)", len);
+ /* Try Again, would only fail if UART has gone bad */
+ return -EAGAIN;
+ }
+
+ /* ST accepted our skb. So, Go ahead and do rest */
+ hdev->stat.byte_tx += len;
+ ti_st_tx_complete(hst, bt_cb(skb)->pkt_type);
+
+ return 0;
+}
+
+static int bt_ti_probe(struct platform_device *pdev)
+{
+ static struct ti_st *hst;
+ struct hci_dev *hdev;
+ int err;
+
+ hst = devm_kzalloc(&pdev->dev, sizeof(struct ti_st), GFP_KERNEL);
+ if (!hst)
+ return -ENOMEM;
+
+ /* Expose "hciX" device to user space */
+ hdev = hci_alloc_dev();
+ if (!hdev)
+ return -ENOMEM;
+
+ BT_DBG("hdev %p", hdev);
+
+ hst->hdev = hdev;
+ hdev->bus = HCI_UART;
+ hci_set_drvdata(hdev, hst);
+ hdev->open = ti_st_open;
+ hdev->close = ti_st_close;
+ hdev->flush = NULL;
+ hdev->send = ti_st_send_frame;
+
+ err = hci_register_dev(hdev);
+ if (err < 0) {
+ BT_ERR("Can't register HCI device error %d", err);
+ hci_free_dev(hdev);
+ return err;
+ }
+
+ BT_DBG("HCI device registered (hdev %p)", hdev);
+
+ dev_set_drvdata(&pdev->dev, hst);
+ return err;
+}
+
+static int bt_ti_remove(struct platform_device *pdev)
+{
+ struct hci_dev *hdev;
+ struct ti_st *hst = dev_get_drvdata(&pdev->dev);
+
+ if (!hst)
+ return -EFAULT;
+
+ BT_DBG("%s", hst->hdev->name);
+
+ hdev = hst->hdev;
+ ti_st_close(hdev);
+ hci_unregister_dev(hdev);
+
+ hci_free_dev(hdev);
+
+ dev_set_drvdata(&pdev->dev, NULL);
+ return 0;
+}
+
+static struct platform_driver btwilink_driver = {
+ .probe = bt_ti_probe,
+ .remove = bt_ti_remove,
+ .driver = {
+ .name = "btwilink",
+ },
+};
+
+module_platform_driver(btwilink_driver);
+
+/* ------ Module Info ------ */
+
+MODULE_AUTHOR("Raja Mani <raja_mani@ti.com>");
+MODULE_DESCRIPTION("Bluetooth Driver for TI Shared Transport" VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
diff --git a/drivers/bluetooth/dtl1_cs.c b/drivers/bluetooth/dtl1_cs.c
new file mode 100644
index 0000000..5026f66
--- /dev/null
+++ b/drivers/bluetooth/dtl1_cs.c
@@ -0,0 +1,613 @@
+/*
+ *
+ * A driver for Nokia Connectivity Card DTL-1 devices
+ *
+ * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/spinlock.h>
+#include <linux/moduleparam.h>
+
+#include <linux/skbuff.h>
+#include <linux/string.h>
+#include <linux/serial.h>
+#include <linux/serial_reg.h>
+#include <linux/bitops.h>
+#include <asm/io.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+
+
+/* ======================== Module parameters ======================== */
+
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Bluetooth driver for Nokia Connectivity Card DTL-1");
+MODULE_LICENSE("GPL");
+
+
+
+/* ======================== Local structures ======================== */
+
+
+struct dtl1_info {
+ struct pcmcia_device *p_dev;
+
+ struct hci_dev *hdev;
+
+ spinlock_t lock; /* For serializing operations */
+
+ unsigned long flowmask; /* HCI flow mask */
+ int ri_latch;
+
+ struct sk_buff_head txq;
+ unsigned long tx_state;
+
+ unsigned long rx_state;
+ unsigned long rx_count;
+ struct sk_buff *rx_skb;
+};
+
+
+static int dtl1_config(struct pcmcia_device *link);
+
+
+/* Transmit states */
+#define XMIT_SENDING 1
+#define XMIT_WAKEUP 2
+#define XMIT_WAITING 8
+
+/* Receiver States */
+#define RECV_WAIT_NSH 0
+#define RECV_WAIT_DATA 1
+
+
+struct nsh {
+ u8 type;
+ u8 zero;
+ u16 len;
+} __packed; /* Nokia Specific Header */
+
+#define NSHL 4 /* Nokia Specific Header Length */
+
+
+
+/* ======================== Interrupt handling ======================== */
+
+
+static int dtl1_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
+{
+ int actual = 0;
+
+ /* Tx FIFO should be empty */
+ if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
+ return 0;
+
+ /* Fill FIFO with current frame */
+ while ((fifo_size-- > 0) && (actual < len)) {
+ /* Transmit next byte */
+ outb(buf[actual], iobase + UART_TX);
+ actual++;
+ }
+
+ return actual;
+}
+
+
+static void dtl1_write_wakeup(struct dtl1_info *info)
+{
+ if (!info) {
+ BT_ERR("Unknown device");
+ return;
+ }
+
+ if (test_bit(XMIT_WAITING, &(info->tx_state))) {
+ set_bit(XMIT_WAKEUP, &(info->tx_state));
+ return;
+ }
+
+ if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
+ set_bit(XMIT_WAKEUP, &(info->tx_state));
+ return;
+ }
+
+ do {
+ unsigned int iobase = info->p_dev->resource[0]->start;
+ register struct sk_buff *skb;
+ int len;
+
+ clear_bit(XMIT_WAKEUP, &(info->tx_state));
+
+ if (!pcmcia_dev_present(info->p_dev))
+ return;
+
+ skb = skb_dequeue(&(info->txq));
+ if (!skb)
+ break;
+
+ /* Send frame */
+ len = dtl1_write(iobase, 32, skb->data, skb->len);
+
+ if (len == skb->len) {
+ set_bit(XMIT_WAITING, &(info->tx_state));
+ kfree_skb(skb);
+ } else {
+ skb_pull(skb, len);
+ skb_queue_head(&(info->txq), skb);
+ }
+
+ info->hdev->stat.byte_tx += len;
+
+ } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
+
+ clear_bit(XMIT_SENDING, &(info->tx_state));
+}
+
+
+static void dtl1_control(struct dtl1_info *info, struct sk_buff *skb)
+{
+ u8 flowmask = *(u8 *)skb->data;
+ int i;
+
+ printk(KERN_INFO "Bluetooth: Nokia control data =");
+ for (i = 0; i < skb->len; i++)
+ printk(" %02x", skb->data[i]);
+
+ printk("\n");
+
+ /* transition to active state */
+ if (((info->flowmask & 0x07) == 0) && ((flowmask & 0x07) != 0)) {
+ clear_bit(XMIT_WAITING, &(info->tx_state));
+ dtl1_write_wakeup(info);
+ }
+
+ info->flowmask = flowmask;
+
+ kfree_skb(skb);
+}
+
+
+static void dtl1_receive(struct dtl1_info *info)
+{
+ unsigned int iobase;
+ struct nsh *nsh;
+ int boguscount = 0;
+
+ if (!info) {
+ BT_ERR("Unknown device");
+ return;
+ }
+
+ iobase = info->p_dev->resource[0]->start;
+
+ do {
+ info->hdev->stat.byte_rx++;
+
+ /* Allocate packet */
+ if (info->rx_skb == NULL) {
+ info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
+ if (!info->rx_skb) {
+ BT_ERR("Can't allocate mem for new packet");
+ info->rx_state = RECV_WAIT_NSH;
+ info->rx_count = NSHL;
+ return;
+ }
+ }
+
+ *skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
+ nsh = (struct nsh *)info->rx_skb->data;
+
+ info->rx_count--;
+
+ if (info->rx_count == 0) {
+
+ switch (info->rx_state) {
+ case RECV_WAIT_NSH:
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = nsh->len + (nsh->len & 0x0001);
+ break;
+ case RECV_WAIT_DATA:
+ bt_cb(info->rx_skb)->pkt_type = nsh->type;
+
+ /* remove PAD byte if it exists */
+ if (nsh->len & 0x0001) {
+ info->rx_skb->tail--;
+ info->rx_skb->len--;
+ }
+
+ /* remove NSH */
+ skb_pull(info->rx_skb, NSHL);
+
+ switch (bt_cb(info->rx_skb)->pkt_type) {
+ case 0x80:
+ /* control data for the Nokia Card */
+ dtl1_control(info, info->rx_skb);
+ break;
+ case 0x82:
+ case 0x83:
+ case 0x84:
+ /* send frame to the HCI layer */
+ bt_cb(info->rx_skb)->pkt_type &= 0x0f;
+ hci_recv_frame(info->hdev, info->rx_skb);
+ break;
+ default:
+ /* unknown packet */
+ BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
+ kfree_skb(info->rx_skb);
+ break;
+ }
+
+ info->rx_state = RECV_WAIT_NSH;
+ info->rx_count = NSHL;
+ info->rx_skb = NULL;
+ break;
+ }
+
+ }
+
+ /* Make sure we don't stay here too long */
+ if (boguscount++ > 32)
+ break;
+
+ } while (inb(iobase + UART_LSR) & UART_LSR_DR);
+}
+
+
+static irqreturn_t dtl1_interrupt(int irq, void *dev_inst)
+{
+ struct dtl1_info *info = dev_inst;
+ unsigned int iobase;
+ unsigned char msr;
+ int boguscount = 0;
+ int iir, lsr;
+ irqreturn_t r = IRQ_NONE;
+
+ if (!info || !info->hdev)
+ /* our irq handler is shared */
+ return IRQ_NONE;
+
+ iobase = info->p_dev->resource[0]->start;
+
+ spin_lock(&(info->lock));
+
+ iir = inb(iobase + UART_IIR) & UART_IIR_ID;
+ while (iir) {
+
+ r = IRQ_HANDLED;
+ /* Clear interrupt */
+ lsr = inb(iobase + UART_LSR);
+
+ switch (iir) {
+ case UART_IIR_RLSI:
+ BT_ERR("RLSI");
+ break;
+ case UART_IIR_RDI:
+ /* Receive interrupt */
+ dtl1_receive(info);
+ break;
+ case UART_IIR_THRI:
+ if (lsr & UART_LSR_THRE) {
+ /* Transmitter ready for data */
+ dtl1_write_wakeup(info);
+ }
+ break;
+ default:
+ BT_ERR("Unhandled IIR=%#x", iir);
+ break;
+ }
+
+ /* Make sure we don't stay here too long */
+ if (boguscount++ > 100)
+ break;
+
+ iir = inb(iobase + UART_IIR) & UART_IIR_ID;
+
+ }
+
+ msr = inb(iobase + UART_MSR);
+
+ if (info->ri_latch ^ (msr & UART_MSR_RI)) {
+ info->ri_latch = msr & UART_MSR_RI;
+ clear_bit(XMIT_WAITING, &(info->tx_state));
+ dtl1_write_wakeup(info);
+ r = IRQ_HANDLED;
+ }
+
+ spin_unlock(&(info->lock));
+
+ return r;
+}
+
+
+
+/* ======================== HCI interface ======================== */
+
+
+static int dtl1_hci_open(struct hci_dev *hdev)
+{
+ return 0;
+}
+
+
+static int dtl1_hci_flush(struct hci_dev *hdev)
+{
+ struct dtl1_info *info = hci_get_drvdata(hdev);
+
+ /* Drop TX queue */
+ skb_queue_purge(&(info->txq));
+
+ return 0;
+}
+
+
+static int dtl1_hci_close(struct hci_dev *hdev)
+{
+ dtl1_hci_flush(hdev);
+
+ return 0;
+}
+
+
+static int dtl1_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct dtl1_info *info = hci_get_drvdata(hdev);
+ struct sk_buff *s;
+ struct nsh nsh;
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_COMMAND_PKT:
+ hdev->stat.cmd_tx++;
+ nsh.type = 0x81;
+ break;
+ case HCI_ACLDATA_PKT:
+ hdev->stat.acl_tx++;
+ nsh.type = 0x82;
+ break;
+ case HCI_SCODATA_PKT:
+ hdev->stat.sco_tx++;
+ nsh.type = 0x83;
+ break;
+ default:
+ return -EILSEQ;
+ }
+
+ nsh.zero = 0;
+ nsh.len = skb->len;
+
+ s = bt_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC);
+ if (!s)
+ return -ENOMEM;
+
+ skb_reserve(s, NSHL);
+ skb_copy_from_linear_data(skb, skb_put(s, skb->len), skb->len);
+ if (skb->len & 0x0001)
+ *skb_put(s, 1) = 0; /* PAD */
+
+ /* Prepend skb with Nokia frame header and queue */
+ memcpy(skb_push(s, NSHL), &nsh, NSHL);
+ skb_queue_tail(&(info->txq), s);
+
+ dtl1_write_wakeup(info);
+
+ kfree_skb(skb);
+
+ return 0;
+}
+
+
+
+/* ======================== Card services HCI interaction ======================== */
+
+
+static int dtl1_open(struct dtl1_info *info)
+{
+ unsigned long flags;
+ unsigned int iobase = info->p_dev->resource[0]->start;
+ struct hci_dev *hdev;
+
+ spin_lock_init(&(info->lock));
+
+ skb_queue_head_init(&(info->txq));
+
+ info->rx_state = RECV_WAIT_NSH;
+ info->rx_count = NSHL;
+ info->rx_skb = NULL;
+
+ set_bit(XMIT_WAITING, &(info->tx_state));
+
+ /* Initialize HCI device */
+ hdev = hci_alloc_dev();
+ if (!hdev) {
+ BT_ERR("Can't allocate HCI device");
+ return -ENOMEM;
+ }
+
+ info->hdev = hdev;
+
+ hdev->bus = HCI_PCCARD;
+ hci_set_drvdata(hdev, info);
+ SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
+
+ hdev->open = dtl1_hci_open;
+ hdev->close = dtl1_hci_close;
+ hdev->flush = dtl1_hci_flush;
+ hdev->send = dtl1_hci_send_frame;
+
+ spin_lock_irqsave(&(info->lock), flags);
+
+ /* Reset UART */
+ outb(0, iobase + UART_MCR);
+
+ /* Turn off interrupts */
+ outb(0, iobase + UART_IER);
+
+ /* Initialize UART */
+ outb(UART_LCR_WLEN8, iobase + UART_LCR); /* Reset DLAB */
+ outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);
+
+ info->ri_latch = inb(info->p_dev->resource[0]->start + UART_MSR)
+ & UART_MSR_RI;
+
+ /* Turn on interrupts */
+ outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
+
+ spin_unlock_irqrestore(&(info->lock), flags);
+
+ /* Timeout before it is safe to send the first HCI packet */
+ msleep(2000);
+
+ /* Register HCI device */
+ if (hci_register_dev(hdev) < 0) {
+ BT_ERR("Can't register HCI device");
+ info->hdev = NULL;
+ hci_free_dev(hdev);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+
+static int dtl1_close(struct dtl1_info *info)
+{
+ unsigned long flags;
+ unsigned int iobase = info->p_dev->resource[0]->start;
+ struct hci_dev *hdev = info->hdev;
+
+ if (!hdev)
+ return -ENODEV;
+
+ dtl1_hci_close(hdev);
+
+ spin_lock_irqsave(&(info->lock), flags);
+
+ /* Reset UART */
+ outb(0, iobase + UART_MCR);
+
+ /* Turn off interrupts */
+ outb(0, iobase + UART_IER);
+
+ spin_unlock_irqrestore(&(info->lock), flags);
+
+ hci_unregister_dev(hdev);
+ hci_free_dev(hdev);
+
+ return 0;
+}
+
+static int dtl1_probe(struct pcmcia_device *link)
+{
+ struct dtl1_info *info;
+
+ /* Create new info device */
+ info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->p_dev = link;
+ link->priv = info;
+
+ link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
+
+ return dtl1_config(link);
+}
+
+
+static void dtl1_detach(struct pcmcia_device *link)
+{
+ struct dtl1_info *info = link->priv;
+
+ dtl1_close(info);
+ pcmcia_disable_device(link);
+}
+
+static int dtl1_confcheck(struct pcmcia_device *p_dev, void *priv_data)
+{
+ if ((p_dev->resource[1]->end) || (p_dev->resource[1]->end < 8))
+ return -ENODEV;
+
+ p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+ p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
+
+ return pcmcia_request_io(p_dev);
+}
+
+static int dtl1_config(struct pcmcia_device *link)
+{
+ struct dtl1_info *info = link->priv;
+ int ret;
+
+ /* Look for a generic full-sized window */
+ link->resource[0]->end = 8;
+ ret = pcmcia_loop_config(link, dtl1_confcheck, NULL);
+ if (ret)
+ goto failed;
+
+ ret = pcmcia_request_irq(link, dtl1_interrupt);
+ if (ret)
+ goto failed;
+
+ ret = pcmcia_enable_device(link);
+ if (ret)
+ goto failed;
+
+ ret = dtl1_open(info);
+ if (ret)
+ goto failed;
+
+ return 0;
+
+failed:
+ dtl1_detach(link);
+ return ret;
+}
+
+static const struct pcmcia_device_id dtl1_ids[] = {
+ PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-1", 0xe1bfdd64, 0xe168480d),
+ PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-4", 0xe1bfdd64, 0x9102bc82),
+ PCMCIA_DEVICE_PROD_ID12("Socket", "CF", 0xb38bcc2e, 0x44ebf863),
+ PCMCIA_DEVICE_PROD_ID12("Socket", "CF+ Personal Network Card", 0xb38bcc2e, 0xe732bae3),
+ PCMCIA_DEVICE_NULL
+};
+MODULE_DEVICE_TABLE(pcmcia, dtl1_ids);
+
+static struct pcmcia_driver dtl1_driver = {
+ .owner = THIS_MODULE,
+ .name = "dtl1_cs",
+ .probe = dtl1_probe,
+ .remove = dtl1_detach,
+ .id_table = dtl1_ids,
+};
+module_pcmcia_driver(dtl1_driver);
diff --git a/drivers/bluetooth/hci_ath.c b/drivers/bluetooth/hci_ath.c
new file mode 100644
index 0000000..d776dfd
--- /dev/null
+++ b/drivers/bluetooth/hci_ath.c
@@ -0,0 +1,264 @@
+/*
+ * Atheros Communication Bluetooth HCIATH3K UART protocol
+ *
+ * HCIATH3K (HCI Atheros AR300x Protocol) is a Atheros Communication's
+ * power management protocol extension to H4 to support AR300x Bluetooth Chip.
+ *
+ * Copyright (c) 2009-2010 Atheros Communications Inc.
+ *
+ * Acknowledgements:
+ * This file is based on hci_h4.c, which was written
+ * by Maxim Krasnyansky and Marcel Holtmann.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/errno.h>
+#include <linux/ioctl.h>
+#include <linux/skbuff.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "hci_uart.h"
+
+struct ath_struct {
+ struct hci_uart *hu;
+ unsigned int cur_sleep;
+
+ struct sk_buff *rx_skb;
+ struct sk_buff_head txq;
+ struct work_struct ctxtsw;
+};
+
+static int ath_wakeup_ar3k(struct tty_struct *tty)
+{
+ int status = tty->driver->ops->tiocmget(tty);
+
+ if (status & TIOCM_CTS)
+ return status;
+
+ /* Clear RTS first */
+ tty->driver->ops->tiocmget(tty);
+ tty->driver->ops->tiocmset(tty, 0x00, TIOCM_RTS);
+ mdelay(20);
+
+ /* Set RTS, wake up board */
+ tty->driver->ops->tiocmget(tty);
+ tty->driver->ops->tiocmset(tty, TIOCM_RTS, 0x00);
+ mdelay(20);
+
+ status = tty->driver->ops->tiocmget(tty);
+ return status;
+}
+
+static void ath_hci_uart_work(struct work_struct *work)
+{
+ int status;
+ struct ath_struct *ath;
+ struct hci_uart *hu;
+ struct tty_struct *tty;
+
+ ath = container_of(work, struct ath_struct, ctxtsw);
+
+ hu = ath->hu;
+ tty = hu->tty;
+
+ /* verify and wake up controller */
+ if (ath->cur_sleep) {
+ status = ath_wakeup_ar3k(tty);
+ if (!(status & TIOCM_CTS))
+ return;
+ }
+
+ /* Ready to send Data */
+ clear_bit(HCI_UART_SENDING, &hu->tx_state);
+ hci_uart_tx_wakeup(hu);
+}
+
+static int ath_open(struct hci_uart *hu)
+{
+ struct ath_struct *ath;
+
+ BT_DBG("hu %p", hu);
+
+ ath = kzalloc(sizeof(*ath), GFP_KERNEL);
+ if (!ath)
+ return -ENOMEM;
+
+ skb_queue_head_init(&ath->txq);
+
+ hu->priv = ath;
+ ath->hu = hu;
+
+ INIT_WORK(&ath->ctxtsw, ath_hci_uart_work);
+
+ return 0;
+}
+
+static int ath_close(struct hci_uart *hu)
+{
+ struct ath_struct *ath = hu->priv;
+
+ BT_DBG("hu %p", hu);
+
+ skb_queue_purge(&ath->txq);
+
+ kfree_skb(ath->rx_skb);
+
+ cancel_work_sync(&ath->ctxtsw);
+
+ hu->priv = NULL;
+ kfree(ath);
+
+ return 0;
+}
+
+static int ath_flush(struct hci_uart *hu)
+{
+ struct ath_struct *ath = hu->priv;
+
+ BT_DBG("hu %p", hu);
+
+ skb_queue_purge(&ath->txq);
+
+ return 0;
+}
+
+static int ath_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+ struct sk_buff *skb;
+ u8 buf[10];
+ int err;
+
+ buf[0] = 0x01;
+ buf[1] = 0x01;
+ buf[2] = 0x00;
+ buf[3] = sizeof(bdaddr_t);
+ memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
+
+ skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ BT_ERR("%s: Change address command failed (%d)",
+ hdev->name, err);
+ return err;
+ }
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static int ath_setup(struct hci_uart *hu)
+{
+ BT_DBG("hu %p", hu);
+
+ hu->hdev->set_bdaddr = ath_set_bdaddr;
+
+ return 0;
+}
+
+static const struct h4_recv_pkt ath_recv_pkts[] = {
+ { H4_RECV_ACL, .recv = hci_recv_frame },
+ { H4_RECV_SCO, .recv = hci_recv_frame },
+ { H4_RECV_EVENT, .recv = hci_recv_frame },
+};
+
+static int ath_recv(struct hci_uart *hu, const void *data, int count)
+{
+ struct ath_struct *ath = hu->priv;
+
+ ath->rx_skb = h4_recv_buf(hu->hdev, ath->rx_skb, data, count,
+ ath_recv_pkts, ARRAY_SIZE(ath_recv_pkts));
+ if (IS_ERR(ath->rx_skb)) {
+ int err = PTR_ERR(ath->rx_skb);
+ BT_ERR("%s: Frame reassembly failed (%d)", hu->hdev->name, err);
+ ath->rx_skb = NULL;
+ return err;
+ }
+
+ return count;
+}
+
+#define HCI_OP_ATH_SLEEP 0xFC04
+
+static int ath_enqueue(struct hci_uart *hu, struct sk_buff *skb)
+{
+ struct ath_struct *ath = hu->priv;
+
+ if (bt_cb(skb)->pkt_type == HCI_SCODATA_PKT) {
+ kfree_skb(skb);
+ return 0;
+ }
+
+ /* Update power management enable flag with parameters of
+ * HCI sleep enable vendor specific HCI command.
+ */
+ if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) {
+ struct hci_command_hdr *hdr = (void *)skb->data;
+
+ if (__le16_to_cpu(hdr->opcode) == HCI_OP_ATH_SLEEP)
+ ath->cur_sleep = skb->data[HCI_COMMAND_HDR_SIZE];
+ }
+
+ BT_DBG("hu %p skb %p", hu, skb);
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+
+ skb_queue_tail(&ath->txq, skb);
+ set_bit(HCI_UART_SENDING, &hu->tx_state);
+
+ schedule_work(&ath->ctxtsw);
+
+ return 0;
+}
+
+static struct sk_buff *ath_dequeue(struct hci_uart *hu)
+{
+ struct ath_struct *ath = hu->priv;
+
+ return skb_dequeue(&ath->txq);
+}
+
+static const struct hci_uart_proto athp = {
+ .id = HCI_UART_ATH3K,
+ .name = "ATH3K",
+ .manufacturer = 69,
+ .open = ath_open,
+ .close = ath_close,
+ .flush = ath_flush,
+ .setup = ath_setup,
+ .recv = ath_recv,
+ .enqueue = ath_enqueue,
+ .dequeue = ath_dequeue,
+};
+
+int __init ath_init(void)
+{
+ return hci_uart_register_proto(&athp);
+}
+
+int __exit ath_deinit(void)
+{
+ return hci_uart_unregister_proto(&athp);
+}
diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
new file mode 100644
index 0000000..f9b569e
--- /dev/null
+++ b/drivers/bluetooth/hci_bcm.c
@@ -0,0 +1,855 @@
+/*
+ *
+ * Bluetooth HCI UART driver for Broadcom devices
+ *
+ * Copyright (C) 2015 Intel Corporation
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/skbuff.h>
+#include <linux/firmware.h>
+#include <linux/module.h>
+#include <linux/acpi.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/gpio/consumer.h>
+#include <linux/tty.h>
+#include <linux/interrupt.h>
+#include <linux/dmi.h>
+#include <linux/pm_runtime.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btbcm.h"
+#include "hci_uart.h"
+
+#define BCM_LM_DIAG_PKT 0x07
+#define BCM_LM_DIAG_SIZE 63
+
+#define BCM_AUTOSUSPEND_DELAY 5000 /* default autosleep delay */
+
+struct bcm_device {
+ struct list_head list;
+
+ struct platform_device *pdev;
+
+ const char *name;
+ struct gpio_desc *device_wakeup;
+ struct gpio_desc *shutdown;
+
+ struct clk *clk;
+ bool clk_enabled;
+
+ u32 init_speed;
+ int irq;
+ u8 irq_polarity;
+
+#ifdef CONFIG_PM
+ struct hci_uart *hu;
+ bool is_suspended; /* suspend/resume flag */
+#endif
+};
+
+struct bcm_data {
+ struct sk_buff *rx_skb;
+ struct sk_buff_head txq;
+
+ struct bcm_device *dev;
+};
+
+/* List of BCM BT UART devices */
+static DEFINE_MUTEX(bcm_device_lock);
+static LIST_HEAD(bcm_device_list);
+
+static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed)
+{
+ struct hci_dev *hdev = hu->hdev;
+ struct sk_buff *skb;
+ struct bcm_update_uart_baud_rate param;
+
+ if (speed > 3000000) {
+ struct bcm_write_uart_clock_setting clock;
+
+ clock.type = BCM_UART_CLOCK_48MHZ;
+
+ bt_dev_dbg(hdev, "Set Controller clock (%d)", clock.type);
+
+ /* This Broadcom specific command changes the UART's controller
+ * clock for baud rate > 3000000.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc45, 1, &clock, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ int err = PTR_ERR(skb);
+ bt_dev_err(hdev, "BCM: failed to write clock (%d)",
+ err);
+ return err;
+ }
+
+ kfree_skb(skb);
+ }
+
+ bt_dev_dbg(hdev, "Set Controller UART speed to %d bit/s", speed);
+
+ param.zero = cpu_to_le16(0);
+ param.baud_rate = cpu_to_le32(speed);
+
+ /* This Broadcom specific command changes the UART's controller baud
+ * rate.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc18, sizeof(param), ¶m,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ int err = PTR_ERR(skb);
+ bt_dev_err(hdev, "BCM: failed to write update baudrate (%d)",
+ err);
+ return err;
+ }
+
+ kfree_skb(skb);
+
+ return 0;
+}
+
+/* bcm_device_exists should be protected by bcm_device_lock */
+static bool bcm_device_exists(struct bcm_device *device)
+{
+ struct list_head *p;
+
+ list_for_each(p, &bcm_device_list) {
+ struct bcm_device *dev = list_entry(p, struct bcm_device, list);
+
+ if (device == dev)
+ return true;
+ }
+
+ return false;
+}
+
+static int bcm_gpio_set_power(struct bcm_device *dev, bool powered)
+{
+ if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled)
+ clk_enable(dev->clk);
+
+ gpiod_set_value(dev->shutdown, powered);
+ gpiod_set_value(dev->device_wakeup, powered);
+
+ if (!powered && !IS_ERR(dev->clk) && dev->clk_enabled)
+ clk_disable(dev->clk);
+
+ dev->clk_enabled = powered;
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static irqreturn_t bcm_host_wake(int irq, void *data)
+{
+ struct bcm_device *bdev = data;
+
+ bt_dev_dbg(bdev, "Host wake IRQ");
+
+ pm_runtime_get(&bdev->pdev->dev);
+ pm_runtime_mark_last_busy(&bdev->pdev->dev);
+ pm_runtime_put_autosuspend(&bdev->pdev->dev);
+
+ return IRQ_HANDLED;
+}
+
+static int bcm_request_irq(struct bcm_data *bcm)
+{
+ struct bcm_device *bdev = bcm->dev;
+ int err = 0;
+
+ /* If this is not a platform device, do not enable PM functionalities */
+ mutex_lock(&bcm_device_lock);
+ if (!bcm_device_exists(bdev)) {
+ err = -ENODEV;
+ goto unlock;
+ }
+
+ if (bdev->irq > 0) {
+ err = devm_request_irq(&bdev->pdev->dev, bdev->irq,
+ bcm_host_wake, IRQF_TRIGGER_RISING,
+ "host_wake", bdev);
+ if (err)
+ goto unlock;
+
+ device_init_wakeup(&bdev->pdev->dev, true);
+
+ pm_runtime_set_autosuspend_delay(&bdev->pdev->dev,
+ BCM_AUTOSUSPEND_DELAY);
+ pm_runtime_use_autosuspend(&bdev->pdev->dev);
+ pm_runtime_set_active(&bdev->pdev->dev);
+ pm_runtime_enable(&bdev->pdev->dev);
+ }
+
+unlock:
+ mutex_unlock(&bcm_device_lock);
+
+ return err;
+}
+
+static const struct bcm_set_sleep_mode default_sleep_params = {
+ .sleep_mode = 1, /* 0=Disabled, 1=UART, 2=Reserved, 3=USB */
+ .idle_host = 2, /* idle threshold HOST, in 300ms */
+ .idle_dev = 2, /* idle threshold device, in 300ms */
+ .bt_wake_active = 1, /* BT_WAKE active mode: 1 = high, 0 = low */
+ .host_wake_active = 0, /* HOST_WAKE active mode: 1 = high, 0 = low */
+ .allow_host_sleep = 1, /* Allow host sleep in SCO flag */
+ .combine_modes = 1, /* Combine sleep and LPM flag */
+ .tristate_control = 0, /* Allow tri-state control of UART tx flag */
+ /* Irrelevant USB flags */
+ .usb_auto_sleep = 0,
+ .usb_resume_timeout = 0,
+ .pulsed_host_wake = 0,
+ .break_to_host = 0
+};
+
+static int bcm_setup_sleep(struct hci_uart *hu)
+{
+ struct bcm_data *bcm = hu->priv;
+ struct sk_buff *skb;
+ struct bcm_set_sleep_mode sleep_params = default_sleep_params;
+
+ sleep_params.host_wake_active = !bcm->dev->irq_polarity;
+
+ skb = __hci_cmd_sync(hu->hdev, 0xfc27, sizeof(sleep_params),
+ &sleep_params, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ int err = PTR_ERR(skb);
+ bt_dev_err(hu->hdev, "Sleep VSC failed (%d)", err);
+ return err;
+ }
+ kfree_skb(skb);
+
+ bt_dev_dbg(hu->hdev, "Set Sleep Parameters VSC succeeded");
+
+ return 0;
+}
+#else
+static inline int bcm_request_irq(struct bcm_data *bcm) { return 0; }
+static inline int bcm_setup_sleep(struct hci_uart *hu) { return 0; }
+#endif
+
+static int bcm_set_diag(struct hci_dev *hdev, bool enable)
+{
+ struct hci_uart *hu = hci_get_drvdata(hdev);
+ struct bcm_data *bcm = hu->priv;
+ struct sk_buff *skb;
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ return -ENETDOWN;
+
+ skb = bt_skb_alloc(3, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ *skb_put(skb, 1) = BCM_LM_DIAG_PKT;
+ *skb_put(skb, 1) = 0xf0;
+ *skb_put(skb, 1) = enable;
+
+ skb_queue_tail(&bcm->txq, skb);
+ hci_uart_tx_wakeup(hu);
+
+ return 0;
+}
+
+static int bcm_open(struct hci_uart *hu)
+{
+ struct bcm_data *bcm;
+ struct list_head *p;
+
+ bt_dev_dbg(hu->hdev, "hu %p", hu);
+
+ bcm = kzalloc(sizeof(*bcm), GFP_KERNEL);
+ if (!bcm)
+ return -ENOMEM;
+
+ skb_queue_head_init(&bcm->txq);
+
+ hu->priv = bcm;
+
+ if (!hu->tty->dev)
+ goto out;
+
+ mutex_lock(&bcm_device_lock);
+ list_for_each(p, &bcm_device_list) {
+ struct bcm_device *dev = list_entry(p, struct bcm_device, list);
+
+ /* Retrieve saved bcm_device based on parent of the
+ * platform device (saved during device probe) and
+ * parent of tty device used by hci_uart
+ */
+ if (hu->tty->dev->parent == dev->pdev->dev.parent) {
+ bcm->dev = dev;
+ hu->init_speed = dev->init_speed;
+#ifdef CONFIG_PM
+ dev->hu = hu;
+#endif
+ bcm_gpio_set_power(bcm->dev, true);
+ break;
+ }
+ }
+
+ mutex_unlock(&bcm_device_lock);
+out:
+ return 0;
+}
+
+static int bcm_close(struct hci_uart *hu)
+{
+ struct bcm_data *bcm = hu->priv;
+ struct bcm_device *bdev = bcm->dev;
+
+ bt_dev_dbg(hu->hdev, "hu %p", hu);
+
+ /* Protect bcm->dev against removal of the device or driver */
+ mutex_lock(&bcm_device_lock);
+ if (bcm_device_exists(bdev)) {
+ bcm_gpio_set_power(bdev, false);
+#ifdef CONFIG_PM
+ pm_runtime_disable(&bdev->pdev->dev);
+ pm_runtime_set_suspended(&bdev->pdev->dev);
+
+ if (device_can_wakeup(&bdev->pdev->dev)) {
+ devm_free_irq(&bdev->pdev->dev, bdev->irq, bdev);
+ device_init_wakeup(&bdev->pdev->dev, false);
+ }
+
+ bdev->hu = NULL;
+#endif
+ }
+ mutex_unlock(&bcm_device_lock);
+
+ skb_queue_purge(&bcm->txq);
+ kfree_skb(bcm->rx_skb);
+ kfree(bcm);
+
+ hu->priv = NULL;
+ return 0;
+}
+
+static int bcm_flush(struct hci_uart *hu)
+{
+ struct bcm_data *bcm = hu->priv;
+
+ bt_dev_dbg(hu->hdev, "hu %p", hu);
+
+ skb_queue_purge(&bcm->txq);
+
+ return 0;
+}
+
+static int bcm_setup(struct hci_uart *hu)
+{
+ struct bcm_data *bcm = hu->priv;
+ char fw_name[64];
+ const struct firmware *fw;
+ unsigned int speed;
+ int err;
+
+ bt_dev_dbg(hu->hdev, "hu %p", hu);
+
+ hu->hdev->set_diag = bcm_set_diag;
+ hu->hdev->set_bdaddr = btbcm_set_bdaddr;
+
+ err = btbcm_initialize(hu->hdev, fw_name, sizeof(fw_name));
+ if (err)
+ return err;
+
+ err = request_firmware(&fw, fw_name, &hu->hdev->dev);
+ if (err < 0) {
+ bt_dev_info(hu->hdev, "BCM: Patch %s not found", fw_name);
+ return 0;
+ }
+
+ err = btbcm_patchram(hu->hdev, fw);
+ if (err) {
+ bt_dev_info(hu->hdev, "BCM: Patch failed (%d)", err);
+ goto finalize;
+ }
+
+ /* Init speed if any */
+ if (hu->init_speed)
+ speed = hu->init_speed;
+ else if (hu->proto->init_speed)
+ speed = hu->proto->init_speed;
+ else
+ speed = 0;
+
+ if (speed)
+ hci_uart_set_baudrate(hu, speed);
+
+ /* Operational speed if any */
+ if (hu->oper_speed)
+ speed = hu->oper_speed;
+ else if (hu->proto->oper_speed)
+ speed = hu->proto->oper_speed;
+ else
+ speed = 0;
+
+ if (speed) {
+ err = bcm_set_baudrate(hu, speed);
+ if (!err)
+ hci_uart_set_baudrate(hu, speed);
+ }
+
+finalize:
+ release_firmware(fw);
+
+ err = btbcm_finalize(hu->hdev);
+ if (err)
+ return err;
+
+ err = bcm_request_irq(bcm);
+ if (!err)
+ err = bcm_setup_sleep(hu);
+
+ return err;
+}
+
+#define BCM_RECV_LM_DIAG \
+ .type = BCM_LM_DIAG_PKT, \
+ .hlen = BCM_LM_DIAG_SIZE, \
+ .loff = 0, \
+ .lsize = 0, \
+ .maxlen = BCM_LM_DIAG_SIZE
+
+static const struct h4_recv_pkt bcm_recv_pkts[] = {
+ { H4_RECV_ACL, .recv = hci_recv_frame },
+ { H4_RECV_SCO, .recv = hci_recv_frame },
+ { H4_RECV_EVENT, .recv = hci_recv_frame },
+ { BCM_RECV_LM_DIAG, .recv = hci_recv_diag },
+};
+
+static int bcm_recv(struct hci_uart *hu, const void *data, int count)
+{
+ struct bcm_data *bcm = hu->priv;
+
+ if (!test_bit(HCI_UART_REGISTERED, &hu->flags))
+ return -EUNATCH;
+
+ bcm->rx_skb = h4_recv_buf(hu->hdev, bcm->rx_skb, data, count,
+ bcm_recv_pkts, ARRAY_SIZE(bcm_recv_pkts));
+ if (IS_ERR(bcm->rx_skb)) {
+ int err = PTR_ERR(bcm->rx_skb);
+ bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err);
+ bcm->rx_skb = NULL;
+ return err;
+ } else if (!bcm->rx_skb) {
+ /* Delay auto-suspend when receiving completed packet */
+ mutex_lock(&bcm_device_lock);
+ if (bcm->dev && bcm_device_exists(bcm->dev)) {
+ pm_runtime_get(&bcm->dev->pdev->dev);
+ pm_runtime_mark_last_busy(&bcm->dev->pdev->dev);
+ pm_runtime_put_autosuspend(&bcm->dev->pdev->dev);
+ }
+ mutex_unlock(&bcm_device_lock);
+ }
+
+ return count;
+}
+
+static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb)
+{
+ struct bcm_data *bcm = hu->priv;
+
+ bt_dev_dbg(hu->hdev, "hu %p skb %p", hu, skb);
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+ skb_queue_tail(&bcm->txq, skb);
+
+ return 0;
+}
+
+static struct sk_buff *bcm_dequeue(struct hci_uart *hu)
+{
+ struct bcm_data *bcm = hu->priv;
+ struct sk_buff *skb = NULL;
+ struct bcm_device *bdev = NULL;
+
+ mutex_lock(&bcm_device_lock);
+
+ if (bcm_device_exists(bcm->dev)) {
+ bdev = bcm->dev;
+ pm_runtime_get_sync(&bdev->pdev->dev);
+ /* Shall be resumed here */
+ }
+
+ skb = skb_dequeue(&bcm->txq);
+
+ if (bdev) {
+ pm_runtime_mark_last_busy(&bdev->pdev->dev);
+ pm_runtime_put_autosuspend(&bdev->pdev->dev);
+ }
+
+ mutex_unlock(&bcm_device_lock);
+
+ return skb;
+}
+
+#ifdef CONFIG_PM
+static int bcm_suspend_device(struct device *dev)
+{
+ struct bcm_device *bdev = platform_get_drvdata(to_platform_device(dev));
+
+ bt_dev_dbg(bdev, "");
+
+ if (!bdev->is_suspended && bdev->hu) {
+ hci_uart_set_flow_control(bdev->hu, true);
+
+ /* Once this returns, driver suspends BT via GPIO */
+ bdev->is_suspended = true;
+ }
+
+ /* Suspend the device */
+ if (bdev->device_wakeup) {
+ gpiod_set_value(bdev->device_wakeup, false);
+ bt_dev_dbg(bdev, "suspend, delaying 15 ms");
+ mdelay(15);
+ }
+
+ return 0;
+}
+
+static int bcm_resume_device(struct device *dev)
+{
+ struct bcm_device *bdev = platform_get_drvdata(to_platform_device(dev));
+
+ bt_dev_dbg(bdev, "");
+
+ if (bdev->device_wakeup) {
+ gpiod_set_value(bdev->device_wakeup, true);
+ bt_dev_dbg(bdev, "resume, delaying 15 ms");
+ mdelay(15);
+ }
+
+ /* When this executes, the device has woken up already */
+ if (bdev->is_suspended && bdev->hu) {
+ bdev->is_suspended = false;
+
+ hci_uart_set_flow_control(bdev->hu, false);
+ }
+
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_PM_SLEEP
+/* Platform suspend callback */
+static int bcm_suspend(struct device *dev)
+{
+ struct bcm_device *bdev = platform_get_drvdata(to_platform_device(dev));
+ int error;
+
+ bt_dev_dbg(bdev, "suspend: is_suspended %d", bdev->is_suspended);
+
+ /* bcm_suspend can be called at any time as long as platform device is
+ * bound, so it should use bcm_device_lock to protect access to hci_uart
+ * and device_wake-up GPIO.
+ */
+ mutex_lock(&bcm_device_lock);
+
+ if (!bdev->hu)
+ goto unlock;
+
+ if (pm_runtime_active(dev))
+ bcm_suspend_device(dev);
+
+ if (device_may_wakeup(&bdev->pdev->dev)) {
+ error = enable_irq_wake(bdev->irq);
+ if (!error)
+ bt_dev_dbg(bdev, "BCM irq: enabled");
+ }
+
+unlock:
+ mutex_unlock(&bcm_device_lock);
+
+ return 0;
+}
+
+/* Platform resume callback */
+static int bcm_resume(struct device *dev)
+{
+ struct bcm_device *bdev = platform_get_drvdata(to_platform_device(dev));
+
+ bt_dev_dbg(bdev, "resume: is_suspended %d", bdev->is_suspended);
+
+ /* bcm_resume can be called at any time as long as platform device is
+ * bound, so it should use bcm_device_lock to protect access to hci_uart
+ * and device_wake-up GPIO.
+ */
+ mutex_lock(&bcm_device_lock);
+
+ if (!bdev->hu)
+ goto unlock;
+
+ if (device_may_wakeup(&bdev->pdev->dev)) {
+ disable_irq_wake(bdev->irq);
+ bt_dev_dbg(bdev, "BCM irq: disabled");
+ }
+
+ bcm_resume_device(dev);
+
+unlock:
+ mutex_unlock(&bcm_device_lock);
+
+ pm_runtime_disable(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+
+ return 0;
+}
+#endif
+
+static const struct acpi_gpio_params device_wakeup_gpios = { 0, 0, false };
+static const struct acpi_gpio_params shutdown_gpios = { 1, 0, false };
+static const struct acpi_gpio_params host_wakeup_gpios = { 2, 0, false };
+
+static const struct acpi_gpio_mapping acpi_bcm_default_gpios[] = {
+ { "device-wakeup-gpios", &device_wakeup_gpios, 1 },
+ { "shutdown-gpios", &shutdown_gpios, 1 },
+ { "host-wakeup-gpios", &host_wakeup_gpios, 1 },
+ { },
+};
+
+#ifdef CONFIG_ACPI
+static u8 acpi_active_low = ACPI_ACTIVE_LOW;
+
+/* IRQ polarity of some chipsets are not defined correctly in ACPI table. */
+static const struct dmi_system_id bcm_wrong_irq_dmi_table[] = {
+ {
+ .ident = "Asus T100TA",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR,
+ "ASUSTeK COMPUTER INC."),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TA"),
+ },
+ .driver_data = &acpi_active_low,
+ },
+ { }
+};
+
+static int bcm_resource(struct acpi_resource *ares, void *data)
+{
+ struct bcm_device *dev = data;
+ struct acpi_resource_extended_irq *irq;
+ struct acpi_resource_gpio *gpio;
+ struct acpi_resource_uart_serialbus *sb;
+
+ switch (ares->type) {
+ case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
+ irq = &ares->data.extended_irq;
+ dev->irq_polarity = irq->polarity;
+ break;
+
+ case ACPI_RESOURCE_TYPE_GPIO:
+ gpio = &ares->data.gpio;
+ if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT)
+ dev->irq_polarity = gpio->polarity;
+ break;
+
+ case ACPI_RESOURCE_TYPE_SERIAL_BUS:
+ sb = &ares->data.uart_serial_bus;
+ if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_UART)
+ dev->init_speed = sb->default_baud_rate;
+ break;
+
+ default:
+ break;
+ }
+
+ /* Always tell the ACPI core to skip this resource */
+ return 1;
+}
+
+static int bcm_acpi_probe(struct bcm_device *dev)
+{
+ struct platform_device *pdev = dev->pdev;
+ LIST_HEAD(resources);
+ const struct dmi_system_id *dmi_id;
+ int ret;
+
+ /* Retrieve GPIO data */
+ dev->name = dev_name(&pdev->dev);
+ ret = acpi_dev_add_driver_gpios(ACPI_COMPANION(&pdev->dev),
+ acpi_bcm_default_gpios);
+ if (ret)
+ return ret;
+
+ dev->clk = devm_clk_get(&pdev->dev, NULL);
+
+ dev->device_wakeup = devm_gpiod_get_optional(&pdev->dev,
+ "device-wakeup",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(dev->device_wakeup))
+ return PTR_ERR(dev->device_wakeup);
+
+ dev->shutdown = devm_gpiod_get_optional(&pdev->dev, "shutdown",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(dev->shutdown))
+ return PTR_ERR(dev->shutdown);
+
+ /* IRQ can be declared in ACPI table as Interrupt or GpioInt */
+ dev->irq = platform_get_irq(pdev, 0);
+ if (dev->irq <= 0) {
+ struct gpio_desc *gpio;
+
+ gpio = devm_gpiod_get_optional(&pdev->dev, "host-wakeup",
+ GPIOD_IN);
+ if (IS_ERR(gpio))
+ return PTR_ERR(gpio);
+
+ dev->irq = gpiod_to_irq(gpio);
+ }
+
+ dev_info(&pdev->dev, "BCM irq: %d\n", dev->irq);
+
+ /* Make sure at-least one of the GPIO is defined and that
+ * a name is specified for this instance
+ */
+ if ((!dev->device_wakeup && !dev->shutdown) || !dev->name) {
+ dev_err(&pdev->dev, "invalid platform data\n");
+ return -EINVAL;
+ }
+
+ /* Retrieve UART ACPI info */
+ ret = acpi_dev_get_resources(ACPI_COMPANION(&dev->pdev->dev),
+ &resources, bcm_resource, dev);
+ if (ret < 0)
+ return ret;
+ acpi_dev_free_resource_list(&resources);
+
+ dmi_id = dmi_first_match(bcm_wrong_irq_dmi_table);
+ if (dmi_id) {
+ bt_dev_warn(dev, "%s: Overwriting IRQ polarity to active low",
+ dmi_id->ident);
+ dev->irq_polarity = *(u8 *)dmi_id->driver_data;
+ }
+
+ return 0;
+}
+#else
+static int bcm_acpi_probe(struct bcm_device *dev)
+{
+ return -EINVAL;
+}
+#endif /* CONFIG_ACPI */
+
+static int bcm_probe(struct platform_device *pdev)
+{
+ struct bcm_device *dev;
+ int ret;
+
+ dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ dev->pdev = pdev;
+
+ ret = bcm_acpi_probe(dev);
+ if (ret)
+ return ret;
+
+ platform_set_drvdata(pdev, dev);
+
+ dev_info(&pdev->dev, "%s device registered.\n", dev->name);
+
+ /* Place this instance on the device list */
+ mutex_lock(&bcm_device_lock);
+ list_add_tail(&dev->list, &bcm_device_list);
+ mutex_unlock(&bcm_device_lock);
+
+ bcm_gpio_set_power(dev, false);
+
+ return 0;
+}
+
+static int bcm_remove(struct platform_device *pdev)
+{
+ struct bcm_device *dev = platform_get_drvdata(pdev);
+
+ mutex_lock(&bcm_device_lock);
+ list_del(&dev->list);
+ mutex_unlock(&bcm_device_lock);
+
+ acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pdev->dev));
+
+ dev_info(&pdev->dev, "%s device unregistered.\n", dev->name);
+
+ return 0;
+}
+
+static const struct hci_uart_proto bcm_proto = {
+ .id = HCI_UART_BCM,
+ .name = "BCM",
+ .manufacturer = 15,
+ .init_speed = 115200,
+ .oper_speed = 4000000,
+ .open = bcm_open,
+ .close = bcm_close,
+ .flush = bcm_flush,
+ .setup = bcm_setup,
+ .set_baudrate = bcm_set_baudrate,
+ .recv = bcm_recv,
+ .enqueue = bcm_enqueue,
+ .dequeue = bcm_dequeue,
+};
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id bcm_acpi_match[] = {
+ { "BCM2E39", 0 },
+ { "BCM2E67", 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, bcm_acpi_match);
+#endif
+
+/* Platform suspend and resume callbacks */
+static const struct dev_pm_ops bcm_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(bcm_suspend, bcm_resume)
+ SET_RUNTIME_PM_OPS(bcm_suspend_device, bcm_resume_device, NULL)
+};
+
+static struct platform_driver bcm_driver = {
+ .probe = bcm_probe,
+ .remove = bcm_remove,
+ .driver = {
+ .name = "hci_bcm",
+ .acpi_match_table = ACPI_PTR(bcm_acpi_match),
+ .pm = &bcm_pm_ops,
+ },
+};
+
+int __init bcm_init(void)
+{
+ platform_driver_register(&bcm_driver);
+
+ return hci_uart_register_proto(&bcm_proto);
+}
+
+int __exit bcm_deinit(void)
+{
+ platform_driver_unregister(&bcm_driver);
+
+ return hci_uart_unregister_proto(&bcm_proto);
+}
diff --git a/drivers/bluetooth/hci_bcsp.c b/drivers/bluetooth/hci_bcsp.c
new file mode 100644
index 0000000..d0b615a
--- /dev/null
+++ b/drivers/bluetooth/hci_bcsp.c
@@ -0,0 +1,761 @@
+/*
+ *
+ * Bluetooth HCI UART driver
+ *
+ * Copyright (C) 2002-2003 Fabrizio Gennari <fabrizio.gennari@philips.com>
+ * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/poll.h>
+
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/signal.h>
+#include <linux/ioctl.h>
+#include <linux/skbuff.h>
+#include <linux/bitrev.h>
+#include <asm/unaligned.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "hci_uart.h"
+
+static bool txcrc = true;
+static bool hciextn = true;
+
+#define BCSP_TXWINSIZE 4
+
+#define BCSP_ACK_PKT 0x05
+#define BCSP_LE_PKT 0x06
+
+struct bcsp_struct {
+ struct sk_buff_head unack; /* Unack'ed packets queue */
+ struct sk_buff_head rel; /* Reliable packets queue */
+ struct sk_buff_head unrel; /* Unreliable packets queue */
+
+ unsigned long rx_count;
+ struct sk_buff *rx_skb;
+ u8 rxseq_txack; /* rxseq == txack. */
+ u8 rxack; /* Last packet sent by us that the peer ack'ed */
+ struct timer_list tbcsp;
+
+ enum {
+ BCSP_W4_PKT_DELIMITER,
+ BCSP_W4_PKT_START,
+ BCSP_W4_BCSP_HDR,
+ BCSP_W4_DATA,
+ BCSP_W4_CRC
+ } rx_state;
+
+ enum {
+ BCSP_ESCSTATE_NOESC,
+ BCSP_ESCSTATE_ESC
+ } rx_esc_state;
+
+ u8 use_crc;
+ u16 message_crc;
+ u8 txack_req; /* Do we need to send ack's to the peer? */
+
+ /* Reliable packet sequence number - used to assign seq to each rel pkt. */
+ u8 msgq_txseq;
+};
+
+/* ---- BCSP CRC calculation ---- */
+
+/* Table for calculating CRC for polynomial 0x1021, LSB processed first,
+initial value 0xffff, bits shifted in reverse order. */
+
+static const u16 crc_table[] = {
+ 0x0000, 0x1081, 0x2102, 0x3183,
+ 0x4204, 0x5285, 0x6306, 0x7387,
+ 0x8408, 0x9489, 0xa50a, 0xb58b,
+ 0xc60c, 0xd68d, 0xe70e, 0xf78f
+};
+
+/* Initialise the crc calculator */
+#define BCSP_CRC_INIT(x) x = 0xffff
+
+/*
+ Update crc with next data byte
+
+ Implementation note
+ The data byte is treated as two nibbles. The crc is generated
+ in reverse, i.e., bits are fed into the register from the top.
+*/
+static void bcsp_crc_update(u16 *crc, u8 d)
+{
+ u16 reg = *crc;
+
+ reg = (reg >> 4) ^ crc_table[(reg ^ d) & 0x000f];
+ reg = (reg >> 4) ^ crc_table[(reg ^ (d >> 4)) & 0x000f];
+
+ *crc = reg;
+}
+
+/* ---- BCSP core ---- */
+
+static void bcsp_slip_msgdelim(struct sk_buff *skb)
+{
+ const char pkt_delim = 0xc0;
+
+ memcpy(skb_put(skb, 1), &pkt_delim, 1);
+}
+
+static void bcsp_slip_one_byte(struct sk_buff *skb, u8 c)
+{
+ const char esc_c0[2] = { 0xdb, 0xdc };
+ const char esc_db[2] = { 0xdb, 0xdd };
+
+ switch (c) {
+ case 0xc0:
+ memcpy(skb_put(skb, 2), &esc_c0, 2);
+ break;
+ case 0xdb:
+ memcpy(skb_put(skb, 2), &esc_db, 2);
+ break;
+ default:
+ memcpy(skb_put(skb, 1), &c, 1);
+ }
+}
+
+static int bcsp_enqueue(struct hci_uart *hu, struct sk_buff *skb)
+{
+ struct bcsp_struct *bcsp = hu->priv;
+
+ if (skb->len > 0xFFF) {
+ BT_ERR("Packet too long");
+ kfree_skb(skb);
+ return 0;
+ }
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_ACLDATA_PKT:
+ case HCI_COMMAND_PKT:
+ skb_queue_tail(&bcsp->rel, skb);
+ break;
+
+ case HCI_SCODATA_PKT:
+ skb_queue_tail(&bcsp->unrel, skb);
+ break;
+
+ default:
+ BT_ERR("Unknown packet type");
+ kfree_skb(skb);
+ break;
+ }
+
+ return 0;
+}
+
+static struct sk_buff *bcsp_prepare_pkt(struct bcsp_struct *bcsp, u8 *data,
+ int len, int pkt_type)
+{
+ struct sk_buff *nskb;
+ u8 hdr[4], chan;
+ u16 BCSP_CRC_INIT(bcsp_txmsg_crc);
+ int rel, i;
+
+ switch (pkt_type) {
+ case HCI_ACLDATA_PKT:
+ chan = 6; /* BCSP ACL channel */
+ rel = 1; /* reliable channel */
+ break;
+ case HCI_COMMAND_PKT:
+ chan = 5; /* BCSP cmd/evt channel */
+ rel = 1; /* reliable channel */
+ break;
+ case HCI_SCODATA_PKT:
+ chan = 7; /* BCSP SCO channel */
+ rel = 0; /* unreliable channel */
+ break;
+ case BCSP_LE_PKT:
+ chan = 1; /* BCSP LE channel */
+ rel = 0; /* unreliable channel */
+ break;
+ case BCSP_ACK_PKT:
+ chan = 0; /* BCSP internal channel */
+ rel = 0; /* unreliable channel */
+ break;
+ default:
+ BT_ERR("Unknown packet type");
+ return NULL;
+ }
+
+ if (hciextn && chan == 5) {
+ __le16 opcode = ((struct hci_command_hdr *)data)->opcode;
+
+ /* Vendor specific commands */
+ if (hci_opcode_ogf(__le16_to_cpu(opcode)) == 0x3f) {
+ u8 desc = *(data + HCI_COMMAND_HDR_SIZE);
+ if ((desc & 0xf0) == 0xc0) {
+ data += HCI_COMMAND_HDR_SIZE + 1;
+ len -= HCI_COMMAND_HDR_SIZE + 1;
+ chan = desc & 0x0f;
+ }
+ }
+ }
+
+ /* Max len of packet: (original len +4(bcsp hdr) +2(crc))*2
+ (because bytes 0xc0 and 0xdb are escaped, worst case is
+ when the packet is all made of 0xc0 and 0xdb :) )
+ + 2 (0xc0 delimiters at start and end). */
+
+ nskb = alloc_skb((len + 6) * 2 + 2, GFP_ATOMIC);
+ if (!nskb)
+ return NULL;
+
+ bt_cb(nskb)->pkt_type = pkt_type;
+
+ bcsp_slip_msgdelim(nskb);
+
+ hdr[0] = bcsp->rxseq_txack << 3;
+ bcsp->txack_req = 0;
+ BT_DBG("We request packet no %u to card", bcsp->rxseq_txack);
+
+ if (rel) {
+ hdr[0] |= 0x80 + bcsp->msgq_txseq;
+ BT_DBG("Sending packet with seqno %u", bcsp->msgq_txseq);
+ bcsp->msgq_txseq = (bcsp->msgq_txseq + 1) & 0x07;
+ }
+
+ if (bcsp->use_crc)
+ hdr[0] |= 0x40;
+
+ hdr[1] = ((len << 4) & 0xff) | chan;
+ hdr[2] = len >> 4;
+ hdr[3] = ~(hdr[0] + hdr[1] + hdr[2]);
+
+ /* Put BCSP header */
+ for (i = 0; i < 4; i++) {
+ bcsp_slip_one_byte(nskb, hdr[i]);
+
+ if (bcsp->use_crc)
+ bcsp_crc_update(&bcsp_txmsg_crc, hdr[i]);
+ }
+
+ /* Put payload */
+ for (i = 0; i < len; i++) {
+ bcsp_slip_one_byte(nskb, data[i]);
+
+ if (bcsp->use_crc)
+ bcsp_crc_update(&bcsp_txmsg_crc, data[i]);
+ }
+
+ /* Put CRC */
+ if (bcsp->use_crc) {
+ bcsp_txmsg_crc = bitrev16(bcsp_txmsg_crc);
+ bcsp_slip_one_byte(nskb, (u8) ((bcsp_txmsg_crc >> 8) & 0x00ff));
+ bcsp_slip_one_byte(nskb, (u8) (bcsp_txmsg_crc & 0x00ff));
+ }
+
+ bcsp_slip_msgdelim(nskb);
+ return nskb;
+}
+
+/* This is a rewrite of pkt_avail in ABCSP */
+static struct sk_buff *bcsp_dequeue(struct hci_uart *hu)
+{
+ struct bcsp_struct *bcsp = hu->priv;
+ unsigned long flags;
+ struct sk_buff *skb;
+
+ /* First of all, check for unreliable messages in the queue,
+ since they have priority */
+
+ skb = skb_dequeue(&bcsp->unrel);
+ if (skb != NULL) {
+ struct sk_buff *nskb = bcsp_prepare_pkt(bcsp, skb->data, skb->len, bt_cb(skb)->pkt_type);
+ if (nskb) {
+ kfree_skb(skb);
+ return nskb;
+ } else {
+ skb_queue_head(&bcsp->unrel, skb);
+ BT_ERR("Could not dequeue pkt because alloc_skb failed");
+ }
+ }
+
+ /* Now, try to send a reliable pkt. We can only send a
+ reliable packet if the number of packets sent but not yet ack'ed
+ is < than the winsize */
+
+ spin_lock_irqsave_nested(&bcsp->unack.lock, flags, SINGLE_DEPTH_NESTING);
+
+ if (bcsp->unack.qlen < BCSP_TXWINSIZE) {
+ skb = skb_dequeue(&bcsp->rel);
+ if (skb != NULL) {
+ struct sk_buff *nskb = bcsp_prepare_pkt(bcsp, skb->data, skb->len,
+ bt_cb(skb)->pkt_type);
+ if (nskb) {
+ __skb_queue_tail(&bcsp->unack, skb);
+ mod_timer(&bcsp->tbcsp, jiffies + HZ / 4);
+ spin_unlock_irqrestore(&bcsp->unack.lock, flags);
+ return nskb;
+ } else {
+ skb_queue_head(&bcsp->rel, skb);
+ BT_ERR("Could not dequeue pkt because alloc_skb failed");
+ }
+ }
+ }
+
+ spin_unlock_irqrestore(&bcsp->unack.lock, flags);
+
+ /* We could not send a reliable packet, either because there are
+ none or because there are too many unack'ed pkts. Did we receive
+ any packets we have not acknowledged yet ? */
+
+ if (bcsp->txack_req) {
+ /* if so, craft an empty ACK pkt and send it on BCSP unreliable
+ channel 0 */
+ struct sk_buff *nskb = bcsp_prepare_pkt(bcsp, NULL, 0, BCSP_ACK_PKT);
+ return nskb;
+ }
+
+ /* We have nothing to send */
+ return NULL;
+}
+
+static int bcsp_flush(struct hci_uart *hu)
+{
+ BT_DBG("hu %p", hu);
+ return 0;
+}
+
+/* Remove ack'ed packets */
+static void bcsp_pkt_cull(struct bcsp_struct *bcsp)
+{
+ struct sk_buff *skb, *tmp;
+ unsigned long flags;
+ int i, pkts_to_be_removed;
+ u8 seqno;
+
+ spin_lock_irqsave(&bcsp->unack.lock, flags);
+
+ pkts_to_be_removed = skb_queue_len(&bcsp->unack);
+ seqno = bcsp->msgq_txseq;
+
+ while (pkts_to_be_removed) {
+ if (bcsp->rxack == seqno)
+ break;
+ pkts_to_be_removed--;
+ seqno = (seqno - 1) & 0x07;
+ }
+
+ if (bcsp->rxack != seqno)
+ BT_ERR("Peer acked invalid packet");
+
+ BT_DBG("Removing %u pkts out of %u, up to seqno %u",
+ pkts_to_be_removed, skb_queue_len(&bcsp->unack),
+ (seqno - 1) & 0x07);
+
+ i = 0;
+ skb_queue_walk_safe(&bcsp->unack, skb, tmp) {
+ if (i >= pkts_to_be_removed)
+ break;
+ i++;
+
+ __skb_unlink(skb, &bcsp->unack);
+ kfree_skb(skb);
+ }
+
+ if (skb_queue_empty(&bcsp->unack))
+ del_timer(&bcsp->tbcsp);
+
+ spin_unlock_irqrestore(&bcsp->unack.lock, flags);
+
+ if (i != pkts_to_be_removed)
+ BT_ERR("Removed only %u out of %u pkts", i, pkts_to_be_removed);
+}
+
+/* Handle BCSP link-establishment packets. When we
+ detect a "sync" packet, symptom that the BT module has reset,
+ we do nothing :) (yet) */
+static void bcsp_handle_le_pkt(struct hci_uart *hu)
+{
+ struct bcsp_struct *bcsp = hu->priv;
+ u8 conf_pkt[4] = { 0xad, 0xef, 0xac, 0xed };
+ u8 conf_rsp_pkt[4] = { 0xde, 0xad, 0xd0, 0xd0 };
+ u8 sync_pkt[4] = { 0xda, 0xdc, 0xed, 0xed };
+
+ /* spot "conf" pkts and reply with a "conf rsp" pkt */
+ if (bcsp->rx_skb->data[1] >> 4 == 4 && bcsp->rx_skb->data[2] == 0 &&
+ !memcmp(&bcsp->rx_skb->data[4], conf_pkt, 4)) {
+ struct sk_buff *nskb = alloc_skb(4, GFP_ATOMIC);
+
+ BT_DBG("Found a LE conf pkt");
+ if (!nskb)
+ return;
+ memcpy(skb_put(nskb, 4), conf_rsp_pkt, 4);
+ bt_cb(nskb)->pkt_type = BCSP_LE_PKT;
+
+ skb_queue_head(&bcsp->unrel, nskb);
+ hci_uart_tx_wakeup(hu);
+ }
+ /* Spot "sync" pkts. If we find one...disaster! */
+ else if (bcsp->rx_skb->data[1] >> 4 == 4 && bcsp->rx_skb->data[2] == 0 &&
+ !memcmp(&bcsp->rx_skb->data[4], sync_pkt, 4)) {
+ BT_ERR("Found a LE sync pkt, card has reset");
+ }
+}
+
+static inline void bcsp_unslip_one_byte(struct bcsp_struct *bcsp, unsigned char byte)
+{
+ const u8 c0 = 0xc0, db = 0xdb;
+
+ switch (bcsp->rx_esc_state) {
+ case BCSP_ESCSTATE_NOESC:
+ switch (byte) {
+ case 0xdb:
+ bcsp->rx_esc_state = BCSP_ESCSTATE_ESC;
+ break;
+ default:
+ memcpy(skb_put(bcsp->rx_skb, 1), &byte, 1);
+ if ((bcsp->rx_skb->data[0] & 0x40) != 0 &&
+ bcsp->rx_state != BCSP_W4_CRC)
+ bcsp_crc_update(&bcsp->message_crc, byte);
+ bcsp->rx_count--;
+ }
+ break;
+
+ case BCSP_ESCSTATE_ESC:
+ switch (byte) {
+ case 0xdc:
+ memcpy(skb_put(bcsp->rx_skb, 1), &c0, 1);
+ if ((bcsp->rx_skb->data[0] & 0x40) != 0 &&
+ bcsp->rx_state != BCSP_W4_CRC)
+ bcsp_crc_update(&bcsp->message_crc, 0xc0);
+ bcsp->rx_esc_state = BCSP_ESCSTATE_NOESC;
+ bcsp->rx_count--;
+ break;
+
+ case 0xdd:
+ memcpy(skb_put(bcsp->rx_skb, 1), &db, 1);
+ if ((bcsp->rx_skb->data[0] & 0x40) != 0 &&
+ bcsp->rx_state != BCSP_W4_CRC)
+ bcsp_crc_update(&bcsp->message_crc, 0xdb);
+ bcsp->rx_esc_state = BCSP_ESCSTATE_NOESC;
+ bcsp->rx_count--;
+ break;
+
+ default:
+ BT_ERR("Invalid byte %02x after esc byte", byte);
+ kfree_skb(bcsp->rx_skb);
+ bcsp->rx_skb = NULL;
+ bcsp->rx_state = BCSP_W4_PKT_DELIMITER;
+ bcsp->rx_count = 0;
+ }
+ }
+}
+
+static void bcsp_complete_rx_pkt(struct hci_uart *hu)
+{
+ struct bcsp_struct *bcsp = hu->priv;
+ int pass_up;
+
+ if (bcsp->rx_skb->data[0] & 0x80) { /* reliable pkt */
+ BT_DBG("Received seqno %u from card", bcsp->rxseq_txack);
+ bcsp->rxseq_txack++;
+ bcsp->rxseq_txack %= 0x8;
+ bcsp->txack_req = 1;
+
+ /* If needed, transmit an ack pkt */
+ hci_uart_tx_wakeup(hu);
+ }
+
+ bcsp->rxack = (bcsp->rx_skb->data[0] >> 3) & 0x07;
+ BT_DBG("Request for pkt %u from card", bcsp->rxack);
+
+ bcsp_pkt_cull(bcsp);
+ if ((bcsp->rx_skb->data[1] & 0x0f) == 6 &&
+ bcsp->rx_skb->data[0] & 0x80) {
+ bt_cb(bcsp->rx_skb)->pkt_type = HCI_ACLDATA_PKT;
+ pass_up = 1;
+ } else if ((bcsp->rx_skb->data[1] & 0x0f) == 5 &&
+ bcsp->rx_skb->data[0] & 0x80) {
+ bt_cb(bcsp->rx_skb)->pkt_type = HCI_EVENT_PKT;
+ pass_up = 1;
+ } else if ((bcsp->rx_skb->data[1] & 0x0f) == 7) {
+ bt_cb(bcsp->rx_skb)->pkt_type = HCI_SCODATA_PKT;
+ pass_up = 1;
+ } else if ((bcsp->rx_skb->data[1] & 0x0f) == 1 &&
+ !(bcsp->rx_skb->data[0] & 0x80)) {
+ bcsp_handle_le_pkt(hu);
+ pass_up = 0;
+ } else
+ pass_up = 0;
+
+ if (!pass_up) {
+ struct hci_event_hdr hdr;
+ u8 desc = (bcsp->rx_skb->data[1] & 0x0f);
+
+ if (desc != 0 && desc != 1) {
+ if (hciextn) {
+ desc |= 0xc0;
+ skb_pull(bcsp->rx_skb, 4);
+ memcpy(skb_push(bcsp->rx_skb, 1), &desc, 1);
+
+ hdr.evt = 0xff;
+ hdr.plen = bcsp->rx_skb->len;
+ memcpy(skb_push(bcsp->rx_skb, HCI_EVENT_HDR_SIZE), &hdr, HCI_EVENT_HDR_SIZE);
+ bt_cb(bcsp->rx_skb)->pkt_type = HCI_EVENT_PKT;
+
+ hci_recv_frame(hu->hdev, bcsp->rx_skb);
+ } else {
+ BT_ERR("Packet for unknown channel (%u %s)",
+ bcsp->rx_skb->data[1] & 0x0f,
+ bcsp->rx_skb->data[0] & 0x80 ?
+ "reliable" : "unreliable");
+ kfree_skb(bcsp->rx_skb);
+ }
+ } else
+ kfree_skb(bcsp->rx_skb);
+ } else {
+ /* Pull out BCSP hdr */
+ skb_pull(bcsp->rx_skb, 4);
+
+ hci_recv_frame(hu->hdev, bcsp->rx_skb);
+ }
+
+ bcsp->rx_state = BCSP_W4_PKT_DELIMITER;
+ bcsp->rx_skb = NULL;
+}
+
+static u16 bscp_get_crc(struct bcsp_struct *bcsp)
+{
+ return get_unaligned_be16(&bcsp->rx_skb->data[bcsp->rx_skb->len - 2]);
+}
+
+/* Recv data */
+static int bcsp_recv(struct hci_uart *hu, const void *data, int count)
+{
+ struct bcsp_struct *bcsp = hu->priv;
+ const unsigned char *ptr;
+
+ BT_DBG("hu %p count %d rx_state %d rx_count %ld",
+ hu, count, bcsp->rx_state, bcsp->rx_count);
+
+ ptr = data;
+ while (count) {
+ if (bcsp->rx_count) {
+ if (*ptr == 0xc0) {
+ BT_ERR("Short BCSP packet");
+ kfree_skb(bcsp->rx_skb);
+ bcsp->rx_state = BCSP_W4_PKT_START;
+ bcsp->rx_count = 0;
+ } else
+ bcsp_unslip_one_byte(bcsp, *ptr);
+
+ ptr++; count--;
+ continue;
+ }
+
+ switch (bcsp->rx_state) {
+ case BCSP_W4_BCSP_HDR:
+ if ((0xff & (u8) ~ (bcsp->rx_skb->data[0] + bcsp->rx_skb->data[1] +
+ bcsp->rx_skb->data[2])) != bcsp->rx_skb->data[3]) {
+ BT_ERR("Error in BCSP hdr checksum");
+ kfree_skb(bcsp->rx_skb);
+ bcsp->rx_state = BCSP_W4_PKT_DELIMITER;
+ bcsp->rx_count = 0;
+ continue;
+ }
+ if (bcsp->rx_skb->data[0] & 0x80 /* reliable pkt */
+ && (bcsp->rx_skb->data[0] & 0x07) != bcsp->rxseq_txack) {
+ BT_ERR("Out-of-order packet arrived, got %u expected %u",
+ bcsp->rx_skb->data[0] & 0x07, bcsp->rxseq_txack);
+
+ kfree_skb(bcsp->rx_skb);
+ bcsp->rx_state = BCSP_W4_PKT_DELIMITER;
+ bcsp->rx_count = 0;
+ continue;
+ }
+ bcsp->rx_state = BCSP_W4_DATA;
+ bcsp->rx_count = (bcsp->rx_skb->data[1] >> 4) +
+ (bcsp->rx_skb->data[2] << 4); /* May be 0 */
+ continue;
+
+ case BCSP_W4_DATA:
+ if (bcsp->rx_skb->data[0] & 0x40) { /* pkt with crc */
+ bcsp->rx_state = BCSP_W4_CRC;
+ bcsp->rx_count = 2;
+ } else
+ bcsp_complete_rx_pkt(hu);
+ continue;
+
+ case BCSP_W4_CRC:
+ if (bitrev16(bcsp->message_crc) != bscp_get_crc(bcsp)) {
+ BT_ERR ("Checksum failed: computed %04x received %04x",
+ bitrev16(bcsp->message_crc),
+ bscp_get_crc(bcsp));
+
+ kfree_skb(bcsp->rx_skb);
+ bcsp->rx_state = BCSP_W4_PKT_DELIMITER;
+ bcsp->rx_count = 0;
+ continue;
+ }
+ skb_trim(bcsp->rx_skb, bcsp->rx_skb->len - 2);
+ bcsp_complete_rx_pkt(hu);
+ continue;
+
+ case BCSP_W4_PKT_DELIMITER:
+ switch (*ptr) {
+ case 0xc0:
+ bcsp->rx_state = BCSP_W4_PKT_START;
+ break;
+ default:
+ /*BT_ERR("Ignoring byte %02x", *ptr);*/
+ break;
+ }
+ ptr++; count--;
+ break;
+
+ case BCSP_W4_PKT_START:
+ switch (*ptr) {
+ case 0xc0:
+ ptr++; count--;
+ break;
+
+ default:
+ bcsp->rx_state = BCSP_W4_BCSP_HDR;
+ bcsp->rx_count = 4;
+ bcsp->rx_esc_state = BCSP_ESCSTATE_NOESC;
+ BCSP_CRC_INIT(bcsp->message_crc);
+
+ /* Do not increment ptr or decrement count
+ * Allocate packet. Max len of a BCSP pkt=
+ * 0xFFF (payload) +4 (header) +2 (crc) */
+
+ bcsp->rx_skb = bt_skb_alloc(0x1005, GFP_ATOMIC);
+ if (!bcsp->rx_skb) {
+ BT_ERR("Can't allocate mem for new packet");
+ bcsp->rx_state = BCSP_W4_PKT_DELIMITER;
+ bcsp->rx_count = 0;
+ return 0;
+ }
+ break;
+ }
+ break;
+ }
+ }
+ return count;
+}
+
+ /* Arrange to retransmit all messages in the relq. */
+static void bcsp_timed_event(unsigned long arg)
+{
+ struct hci_uart *hu = (struct hci_uart *) arg;
+ struct bcsp_struct *bcsp = hu->priv;
+ struct sk_buff *skb;
+ unsigned long flags;
+
+ BT_DBG("hu %p retransmitting %u pkts", hu, bcsp->unack.qlen);
+
+ spin_lock_irqsave_nested(&bcsp->unack.lock, flags, SINGLE_DEPTH_NESTING);
+
+ while ((skb = __skb_dequeue_tail(&bcsp->unack)) != NULL) {
+ bcsp->msgq_txseq = (bcsp->msgq_txseq - 1) & 0x07;
+ skb_queue_head(&bcsp->rel, skb);
+ }
+
+ spin_unlock_irqrestore(&bcsp->unack.lock, flags);
+
+ hci_uart_tx_wakeup(hu);
+}
+
+static int bcsp_open(struct hci_uart *hu)
+{
+ struct bcsp_struct *bcsp;
+
+ BT_DBG("hu %p", hu);
+
+ bcsp = kzalloc(sizeof(*bcsp), GFP_KERNEL);
+ if (!bcsp)
+ return -ENOMEM;
+
+ hu->priv = bcsp;
+ skb_queue_head_init(&bcsp->unack);
+ skb_queue_head_init(&bcsp->rel);
+ skb_queue_head_init(&bcsp->unrel);
+
+ init_timer(&bcsp->tbcsp);
+ bcsp->tbcsp.function = bcsp_timed_event;
+ bcsp->tbcsp.data = (u_long) hu;
+
+ bcsp->rx_state = BCSP_W4_PKT_DELIMITER;
+
+ if (txcrc)
+ bcsp->use_crc = 1;
+
+ return 0;
+}
+
+static int bcsp_close(struct hci_uart *hu)
+{
+ struct bcsp_struct *bcsp = hu->priv;
+
+ del_timer_sync(&bcsp->tbcsp);
+
+ hu->priv = NULL;
+
+ BT_DBG("hu %p", hu);
+
+ skb_queue_purge(&bcsp->unack);
+ skb_queue_purge(&bcsp->rel);
+ skb_queue_purge(&bcsp->unrel);
+
+ kfree(bcsp);
+ return 0;
+}
+
+static const struct hci_uart_proto bcsp = {
+ .id = HCI_UART_BCSP,
+ .name = "BCSP",
+ .open = bcsp_open,
+ .close = bcsp_close,
+ .enqueue = bcsp_enqueue,
+ .dequeue = bcsp_dequeue,
+ .recv = bcsp_recv,
+ .flush = bcsp_flush
+};
+
+int __init bcsp_init(void)
+{
+ return hci_uart_register_proto(&bcsp);
+}
+
+int __exit bcsp_deinit(void)
+{
+ return hci_uart_unregister_proto(&bcsp);
+}
+
+module_param(txcrc, bool, 0644);
+MODULE_PARM_DESC(txcrc, "Transmit CRC with every BCSP packet");
+
+module_param(hciextn, bool, 0644);
+MODULE_PARM_DESC(hciextn, "Convert HCI Extensions into BCSP packets");
diff --git a/drivers/bluetooth/hci_h4.c b/drivers/bluetooth/hci_h4.c
new file mode 100644
index 0000000..a6fce48
--- /dev/null
+++ b/drivers/bluetooth/hci_h4.c
@@ -0,0 +1,269 @@
+/*
+ *
+ * Bluetooth HCI UART driver
+ *
+ * Copyright (C) 2000-2001 Qualcomm Incorporated
+ * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
+ * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/poll.h>
+
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/signal.h>
+#include <linux/ioctl.h>
+#include <linux/skbuff.h>
+#include <asm/unaligned.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "hci_uart.h"
+
+struct h4_struct {
+ struct sk_buff *rx_skb;
+ struct sk_buff_head txq;
+};
+
+/* Initialize protocol */
+static int h4_open(struct hci_uart *hu)
+{
+ struct h4_struct *h4;
+
+ BT_DBG("hu %p", hu);
+
+ h4 = kzalloc(sizeof(*h4), GFP_KERNEL);
+ if (!h4)
+ return -ENOMEM;
+
+ skb_queue_head_init(&h4->txq);
+
+ hu->priv = h4;
+ return 0;
+}
+
+/* Flush protocol data */
+static int h4_flush(struct hci_uart *hu)
+{
+ struct h4_struct *h4 = hu->priv;
+
+ BT_DBG("hu %p", hu);
+
+ skb_queue_purge(&h4->txq);
+
+ return 0;
+}
+
+/* Close protocol */
+static int h4_close(struct hci_uart *hu)
+{
+ struct h4_struct *h4 = hu->priv;
+
+ hu->priv = NULL;
+
+ BT_DBG("hu %p", hu);
+
+ skb_queue_purge(&h4->txq);
+
+ kfree_skb(h4->rx_skb);
+
+ hu->priv = NULL;
+ kfree(h4);
+
+ return 0;
+}
+
+/* Enqueue frame for transmittion (padding, crc, etc) */
+static int h4_enqueue(struct hci_uart *hu, struct sk_buff *skb)
+{
+ struct h4_struct *h4 = hu->priv;
+
+ BT_DBG("hu %p skb %p", hu, skb);
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+ skb_queue_tail(&h4->txq, skb);
+
+ return 0;
+}
+
+static const struct h4_recv_pkt h4_recv_pkts[] = {
+ { H4_RECV_ACL, .recv = hci_recv_frame },
+ { H4_RECV_SCO, .recv = hci_recv_frame },
+ { H4_RECV_EVENT, .recv = hci_recv_frame },
+};
+
+/* Recv data */
+static int h4_recv(struct hci_uart *hu, const void *data, int count)
+{
+ struct h4_struct *h4 = hu->priv;
+
+ if (!test_bit(HCI_UART_REGISTERED, &hu->flags))
+ return -EUNATCH;
+
+ h4->rx_skb = h4_recv_buf(hu->hdev, h4->rx_skb, data, count,
+ h4_recv_pkts, ARRAY_SIZE(h4_recv_pkts));
+ if (IS_ERR(h4->rx_skb)) {
+ int err = PTR_ERR(h4->rx_skb);
+ BT_ERR("%s: Frame reassembly failed (%d)", hu->hdev->name, err);
+ h4->rx_skb = NULL;
+ return err;
+ }
+
+ return count;
+}
+
+static struct sk_buff *h4_dequeue(struct hci_uart *hu)
+{
+ struct h4_struct *h4 = hu->priv;
+ return skb_dequeue(&h4->txq);
+}
+
+static const struct hci_uart_proto h4p = {
+ .id = HCI_UART_H4,
+ .name = "H4",
+ .open = h4_open,
+ .close = h4_close,
+ .recv = h4_recv,
+ .enqueue = h4_enqueue,
+ .dequeue = h4_dequeue,
+ .flush = h4_flush,
+};
+
+int __init h4_init(void)
+{
+ return hci_uart_register_proto(&h4p);
+}
+
+int __exit h4_deinit(void)
+{
+ return hci_uart_unregister_proto(&h4p);
+}
+
+struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
+ const unsigned char *buffer, int count,
+ const struct h4_recv_pkt *pkts, int pkts_count)
+{
+ while (count) {
+ int i, len;
+
+ if (!skb) {
+ for (i = 0; i < pkts_count; i++) {
+ if (buffer[0] != (&pkts[i])->type)
+ continue;
+
+ skb = bt_skb_alloc((&pkts[i])->maxlen,
+ GFP_ATOMIC);
+ if (!skb)
+ return ERR_PTR(-ENOMEM);
+
+ bt_cb(skb)->pkt_type = (&pkts[i])->type;
+ bt_cb(skb)->expect = (&pkts[i])->hlen;
+ break;
+ }
+
+ /* Check for invalid packet type */
+ if (!skb)
+ return ERR_PTR(-EILSEQ);
+
+ count -= 1;
+ buffer += 1;
+ }
+
+ len = min_t(uint, bt_cb(skb)->expect - skb->len, count);
+ memcpy(skb_put(skb, len), buffer, len);
+
+ count -= len;
+ buffer += len;
+
+ /* Check for partial packet */
+ if (skb->len < bt_cb(skb)->expect)
+ continue;
+
+ for (i = 0; i < pkts_count; i++) {
+ if (bt_cb(skb)->pkt_type == (&pkts[i])->type)
+ break;
+ }
+
+ if (i >= pkts_count) {
+ kfree_skb(skb);
+ return ERR_PTR(-EILSEQ);
+ }
+
+ if (skb->len == (&pkts[i])->hlen) {
+ u16 dlen;
+
+ switch ((&pkts[i])->lsize) {
+ case 0:
+ /* No variable data length */
+ dlen = 0;
+ break;
+ case 1:
+ /* Single octet variable length */
+ dlen = skb->data[(&pkts[i])->loff];
+ bt_cb(skb)->expect += dlen;
+
+ if (skb_tailroom(skb) < dlen) {
+ kfree_skb(skb);
+ return ERR_PTR(-EMSGSIZE);
+ }
+ break;
+ case 2:
+ /* Double octet variable length */
+ dlen = get_unaligned_le16(skb->data +
+ (&pkts[i])->loff);
+ bt_cb(skb)->expect += dlen;
+
+ if (skb_tailroom(skb) < dlen) {
+ kfree_skb(skb);
+ return ERR_PTR(-EMSGSIZE);
+ }
+ break;
+ default:
+ /* Unsupported variable length */
+ kfree_skb(skb);
+ return ERR_PTR(-EILSEQ);
+ }
+
+ if (!dlen) {
+ /* No more data, complete frame */
+ (&pkts[i])->recv(hdev, skb);
+ skb = NULL;
+ }
+ } else {
+ /* Complete frame */
+ (&pkts[i])->recv(hdev, skb);
+ skb = NULL;
+ }
+ }
+
+ return skb;
+}
+EXPORT_SYMBOL_GPL(h4_recv_buf);
diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c
new file mode 100644
index 0000000..abee221
--- /dev/null
+++ b/drivers/bluetooth/hci_h5.c
@@ -0,0 +1,765 @@
+/*
+ *
+ * Bluetooth HCI Three-wire UART driver
+ *
+ * Copyright (C) 2012 Intel Corporation
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/skbuff.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "hci_uart.h"
+
+#define HCI_3WIRE_ACK_PKT 0
+#define HCI_3WIRE_LINK_PKT 15
+
+/* Sliding window size */
+#define H5_TX_WIN_MAX 4
+
+#define H5_ACK_TIMEOUT msecs_to_jiffies(250)
+#define H5_SYNC_TIMEOUT msecs_to_jiffies(100)
+
+/*
+ * Maximum Three-wire packet:
+ * 4 byte header + max value for 12-bit length + 2 bytes for CRC
+ */
+#define H5_MAX_LEN (4 + 0xfff + 2)
+
+/* Convenience macros for reading Three-wire header values */
+#define H5_HDR_SEQ(hdr) ((hdr)[0] & 0x07)
+#define H5_HDR_ACK(hdr) (((hdr)[0] >> 3) & 0x07)
+#define H5_HDR_CRC(hdr) (((hdr)[0] >> 6) & 0x01)
+#define H5_HDR_RELIABLE(hdr) (((hdr)[0] >> 7) & 0x01)
+#define H5_HDR_PKT_TYPE(hdr) ((hdr)[1] & 0x0f)
+#define H5_HDR_LEN(hdr) ((((hdr)[1] >> 4) & 0xff) + ((hdr)[2] << 4))
+
+#define SLIP_DELIMITER 0xc0
+#define SLIP_ESC 0xdb
+#define SLIP_ESC_DELIM 0xdc
+#define SLIP_ESC_ESC 0xdd
+
+/* H5 state flags */
+enum {
+ H5_RX_ESC, /* SLIP escape mode */
+ H5_TX_ACK_REQ, /* Pending ack to send */
+};
+
+struct h5 {
+ struct sk_buff_head unack; /* Unack'ed packets queue */
+ struct sk_buff_head rel; /* Reliable packets queue */
+ struct sk_buff_head unrel; /* Unreliable packets queue */
+
+ unsigned long flags;
+
+ struct sk_buff *rx_skb; /* Receive buffer */
+ size_t rx_pending; /* Expecting more bytes */
+ u8 rx_ack; /* Last ack number received */
+
+ int (*rx_func)(struct hci_uart *hu, u8 c);
+
+ struct timer_list timer; /* Retransmission timer */
+
+ u8 tx_seq; /* Next seq number to send */
+ u8 tx_ack; /* Next ack number to send */
+ u8 tx_win; /* Sliding window size */
+
+ enum {
+ H5_UNINITIALIZED,
+ H5_INITIALIZED,
+ H5_ACTIVE,
+ } state;
+
+ enum {
+ H5_AWAKE,
+ H5_SLEEPING,
+ H5_WAKING_UP,
+ } sleep;
+};
+
+static void h5_reset_rx(struct h5 *h5);
+
+static void h5_link_control(struct hci_uart *hu, const void *data, size_t len)
+{
+ struct h5 *h5 = hu->priv;
+ struct sk_buff *nskb;
+
+ nskb = alloc_skb(3, GFP_ATOMIC);
+ if (!nskb)
+ return;
+
+ bt_cb(nskb)->pkt_type = HCI_3WIRE_LINK_PKT;
+
+ memcpy(skb_put(nskb, len), data, len);
+
+ skb_queue_tail(&h5->unrel, nskb);
+}
+
+static u8 h5_cfg_field(struct h5 *h5)
+{
+ u8 field = 0;
+
+ /* Sliding window size (first 3 bits) */
+ field |= (h5->tx_win & 7);
+
+ return field;
+}
+
+static void h5_timed_event(unsigned long arg)
+{
+ const unsigned char sync_req[] = { 0x01, 0x7e };
+ unsigned char conf_req[] = { 0x03, 0xfc, 0x01 };
+ struct hci_uart *hu = (struct hci_uart *)arg;
+ struct h5 *h5 = hu->priv;
+ struct sk_buff *skb;
+ unsigned long flags;
+
+ BT_DBG("%s", hu->hdev->name);
+
+ if (h5->state == H5_UNINITIALIZED)
+ h5_link_control(hu, sync_req, sizeof(sync_req));
+
+ if (h5->state == H5_INITIALIZED) {
+ conf_req[2] = h5_cfg_field(h5);
+ h5_link_control(hu, conf_req, sizeof(conf_req));
+ }
+
+ if (h5->state != H5_ACTIVE) {
+ mod_timer(&h5->timer, jiffies + H5_SYNC_TIMEOUT);
+ goto wakeup;
+ }
+
+ if (h5->sleep != H5_AWAKE) {
+ h5->sleep = H5_SLEEPING;
+ goto wakeup;
+ }
+
+ BT_DBG("hu %p retransmitting %u pkts", hu, h5->unack.qlen);
+
+ spin_lock_irqsave_nested(&h5->unack.lock, flags, SINGLE_DEPTH_NESTING);
+
+ while ((skb = __skb_dequeue_tail(&h5->unack)) != NULL) {
+ h5->tx_seq = (h5->tx_seq - 1) & 0x07;
+ skb_queue_head(&h5->rel, skb);
+ }
+
+ spin_unlock_irqrestore(&h5->unack.lock, flags);
+
+wakeup:
+ hci_uart_tx_wakeup(hu);
+}
+
+static void h5_peer_reset(struct hci_uart *hu)
+{
+ struct h5 *h5 = hu->priv;
+
+ BT_ERR("Peer device has reset");
+
+ h5->state = H5_UNINITIALIZED;
+
+ del_timer(&h5->timer);
+
+ skb_queue_purge(&h5->rel);
+ skb_queue_purge(&h5->unrel);
+ skb_queue_purge(&h5->unack);
+
+ h5->tx_seq = 0;
+ h5->tx_ack = 0;
+
+ /* Send reset request to upper stack */
+ hci_reset_dev(hu->hdev);
+}
+
+static int h5_open(struct hci_uart *hu)
+{
+ struct h5 *h5;
+ const unsigned char sync[] = { 0x01, 0x7e };
+
+ BT_DBG("hu %p", hu);
+
+ h5 = kzalloc(sizeof(*h5), GFP_KERNEL);
+ if (!h5)
+ return -ENOMEM;
+
+ hu->priv = h5;
+
+ skb_queue_head_init(&h5->unack);
+ skb_queue_head_init(&h5->rel);
+ skb_queue_head_init(&h5->unrel);
+
+ h5_reset_rx(h5);
+
+ init_timer(&h5->timer);
+ h5->timer.function = h5_timed_event;
+ h5->timer.data = (unsigned long)hu;
+
+ h5->tx_win = H5_TX_WIN_MAX;
+
+ set_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags);
+
+ /* Send initial sync request */
+ h5_link_control(hu, sync, sizeof(sync));
+ mod_timer(&h5->timer, jiffies + H5_SYNC_TIMEOUT);
+
+ return 0;
+}
+
+static int h5_close(struct hci_uart *hu)
+{
+ struct h5 *h5 = hu->priv;
+
+ del_timer_sync(&h5->timer);
+
+ skb_queue_purge(&h5->unack);
+ skb_queue_purge(&h5->rel);
+ skb_queue_purge(&h5->unrel);
+
+ kfree(h5);
+
+ return 0;
+}
+
+static void h5_pkt_cull(struct h5 *h5)
+{
+ struct sk_buff *skb, *tmp;
+ unsigned long flags;
+ int i, to_remove;
+ u8 seq;
+
+ spin_lock_irqsave(&h5->unack.lock, flags);
+
+ to_remove = skb_queue_len(&h5->unack);
+ if (to_remove == 0)
+ goto unlock;
+
+ seq = h5->tx_seq;
+
+ while (to_remove > 0) {
+ if (h5->rx_ack == seq)
+ break;
+
+ to_remove--;
+ seq = (seq - 1) & 0x07;
+ }
+
+ if (seq != h5->rx_ack)
+ BT_ERR("Controller acked invalid packet");
+
+ i = 0;
+ skb_queue_walk_safe(&h5->unack, skb, tmp) {
+ if (i++ >= to_remove)
+ break;
+
+ __skb_unlink(skb, &h5->unack);
+ kfree_skb(skb);
+ }
+
+ if (skb_queue_empty(&h5->unack))
+ del_timer(&h5->timer);
+
+unlock:
+ spin_unlock_irqrestore(&h5->unack.lock, flags);
+}
+
+static void h5_handle_internal_rx(struct hci_uart *hu)
+{
+ struct h5 *h5 = hu->priv;
+ const unsigned char sync_req[] = { 0x01, 0x7e };
+ const unsigned char sync_rsp[] = { 0x02, 0x7d };
+ unsigned char conf_req[] = { 0x03, 0xfc, 0x01 };
+ const unsigned char conf_rsp[] = { 0x04, 0x7b };
+ const unsigned char wakeup_req[] = { 0x05, 0xfa };
+ const unsigned char woken_req[] = { 0x06, 0xf9 };
+ const unsigned char sleep_req[] = { 0x07, 0x78 };
+ const unsigned char *hdr = h5->rx_skb->data;
+ const unsigned char *data = &h5->rx_skb->data[4];
+
+ BT_DBG("%s", hu->hdev->name);
+
+ if (H5_HDR_PKT_TYPE(hdr) != HCI_3WIRE_LINK_PKT)
+ return;
+
+ if (H5_HDR_LEN(hdr) < 2)
+ return;
+
+ conf_req[2] = h5_cfg_field(h5);
+
+ if (memcmp(data, sync_req, 2) == 0) {
+ if (h5->state == H5_ACTIVE)
+ h5_peer_reset(hu);
+ h5_link_control(hu, sync_rsp, 2);
+ } else if (memcmp(data, sync_rsp, 2) == 0) {
+ if (h5->state == H5_ACTIVE)
+ h5_peer_reset(hu);
+ h5->state = H5_INITIALIZED;
+ h5_link_control(hu, conf_req, 3);
+ } else if (memcmp(data, conf_req, 2) == 0) {
+ h5_link_control(hu, conf_rsp, 2);
+ h5_link_control(hu, conf_req, 3);
+ } else if (memcmp(data, conf_rsp, 2) == 0) {
+ if (H5_HDR_LEN(hdr) > 2)
+ h5->tx_win = (data[2] & 7);
+ BT_DBG("Three-wire init complete. tx_win %u", h5->tx_win);
+ h5->state = H5_ACTIVE;
+ hci_uart_init_ready(hu);
+ return;
+ } else if (memcmp(data, sleep_req, 2) == 0) {
+ BT_DBG("Peer went to sleep");
+ h5->sleep = H5_SLEEPING;
+ return;
+ } else if (memcmp(data, woken_req, 2) == 0) {
+ BT_DBG("Peer woke up");
+ h5->sleep = H5_AWAKE;
+ } else if (memcmp(data, wakeup_req, 2) == 0) {
+ BT_DBG("Peer requested wakeup");
+ h5_link_control(hu, woken_req, 2);
+ h5->sleep = H5_AWAKE;
+ } else {
+ BT_DBG("Link Control: 0x%02hhx 0x%02hhx", data[0], data[1]);
+ return;
+ }
+
+ hci_uart_tx_wakeup(hu);
+}
+
+static void h5_complete_rx_pkt(struct hci_uart *hu)
+{
+ struct h5 *h5 = hu->priv;
+ const unsigned char *hdr = h5->rx_skb->data;
+
+ if (H5_HDR_RELIABLE(hdr)) {
+ h5->tx_ack = (h5->tx_ack + 1) % 8;
+ set_bit(H5_TX_ACK_REQ, &h5->flags);
+ hci_uart_tx_wakeup(hu);
+ }
+
+ h5->rx_ack = H5_HDR_ACK(hdr);
+
+ h5_pkt_cull(h5);
+
+ switch (H5_HDR_PKT_TYPE(hdr)) {
+ case HCI_EVENT_PKT:
+ case HCI_ACLDATA_PKT:
+ case HCI_SCODATA_PKT:
+ bt_cb(h5->rx_skb)->pkt_type = H5_HDR_PKT_TYPE(hdr);
+
+ /* Remove Three-wire header */
+ skb_pull(h5->rx_skb, 4);
+
+ hci_recv_frame(hu->hdev, h5->rx_skb);
+ h5->rx_skb = NULL;
+
+ break;
+
+ default:
+ h5_handle_internal_rx(hu);
+ break;
+ }
+
+ h5_reset_rx(h5);
+}
+
+static int h5_rx_crc(struct hci_uart *hu, unsigned char c)
+{
+ h5_complete_rx_pkt(hu);
+
+ return 0;
+}
+
+static int h5_rx_payload(struct hci_uart *hu, unsigned char c)
+{
+ struct h5 *h5 = hu->priv;
+ const unsigned char *hdr = h5->rx_skb->data;
+
+ if (H5_HDR_CRC(hdr)) {
+ h5->rx_func = h5_rx_crc;
+ h5->rx_pending = 2;
+ } else {
+ h5_complete_rx_pkt(hu);
+ }
+
+ return 0;
+}
+
+static int h5_rx_3wire_hdr(struct hci_uart *hu, unsigned char c)
+{
+ struct h5 *h5 = hu->priv;
+ const unsigned char *hdr = h5->rx_skb->data;
+
+ BT_DBG("%s rx: seq %u ack %u crc %u rel %u type %u len %u",
+ hu->hdev->name, H5_HDR_SEQ(hdr), H5_HDR_ACK(hdr),
+ H5_HDR_CRC(hdr), H5_HDR_RELIABLE(hdr), H5_HDR_PKT_TYPE(hdr),
+ H5_HDR_LEN(hdr));
+
+ if (((hdr[0] + hdr[1] + hdr[2] + hdr[3]) & 0xff) != 0xff) {
+ BT_ERR("Invalid header checksum");
+ h5_reset_rx(h5);
+ return 0;
+ }
+
+ if (H5_HDR_RELIABLE(hdr) && H5_HDR_SEQ(hdr) != h5->tx_ack) {
+ BT_ERR("Out-of-order packet arrived (%u != %u)",
+ H5_HDR_SEQ(hdr), h5->tx_ack);
+ h5_reset_rx(h5);
+ return 0;
+ }
+
+ if (h5->state != H5_ACTIVE &&
+ H5_HDR_PKT_TYPE(hdr) != HCI_3WIRE_LINK_PKT) {
+ BT_ERR("Non-link packet received in non-active state");
+ h5_reset_rx(h5);
+ return 0;
+ }
+
+ h5->rx_func = h5_rx_payload;
+ h5->rx_pending = H5_HDR_LEN(hdr);
+
+ return 0;
+}
+
+static int h5_rx_pkt_start(struct hci_uart *hu, unsigned char c)
+{
+ struct h5 *h5 = hu->priv;
+
+ if (c == SLIP_DELIMITER)
+ return 1;
+
+ h5->rx_func = h5_rx_3wire_hdr;
+ h5->rx_pending = 4;
+
+ h5->rx_skb = bt_skb_alloc(H5_MAX_LEN, GFP_ATOMIC);
+ if (!h5->rx_skb) {
+ BT_ERR("Can't allocate mem for new packet");
+ h5_reset_rx(h5);
+ return -ENOMEM;
+ }
+
+ h5->rx_skb->dev = (void *)hu->hdev;
+
+ return 0;
+}
+
+static int h5_rx_delimiter(struct hci_uart *hu, unsigned char c)
+{
+ struct h5 *h5 = hu->priv;
+
+ if (c == SLIP_DELIMITER)
+ h5->rx_func = h5_rx_pkt_start;
+
+ return 1;
+}
+
+static void h5_unslip_one_byte(struct h5 *h5, unsigned char c)
+{
+ const u8 delim = SLIP_DELIMITER, esc = SLIP_ESC;
+ const u8 *byte = &c;
+
+ if (!test_bit(H5_RX_ESC, &h5->flags) && c == SLIP_ESC) {
+ set_bit(H5_RX_ESC, &h5->flags);
+ return;
+ }
+
+ if (test_and_clear_bit(H5_RX_ESC, &h5->flags)) {
+ switch (c) {
+ case SLIP_ESC_DELIM:
+ byte = &delim;
+ break;
+ case SLIP_ESC_ESC:
+ byte = &esc;
+ break;
+ default:
+ BT_ERR("Invalid esc byte 0x%02hhx", c);
+ h5_reset_rx(h5);
+ return;
+ }
+ }
+
+ memcpy(skb_put(h5->rx_skb, 1), byte, 1);
+ h5->rx_pending--;
+
+ BT_DBG("unsliped 0x%02hhx, rx_pending %zu", *byte, h5->rx_pending);
+}
+
+static void h5_reset_rx(struct h5 *h5)
+{
+ if (h5->rx_skb) {
+ kfree_skb(h5->rx_skb);
+ h5->rx_skb = NULL;
+ }
+
+ h5->rx_func = h5_rx_delimiter;
+ h5->rx_pending = 0;
+ clear_bit(H5_RX_ESC, &h5->flags);
+}
+
+static int h5_recv(struct hci_uart *hu, const void *data, int count)
+{
+ struct h5 *h5 = hu->priv;
+ const unsigned char *ptr = data;
+
+ BT_DBG("%s pending %zu count %d", hu->hdev->name, h5->rx_pending,
+ count);
+
+ while (count > 0) {
+ int processed;
+
+ if (h5->rx_pending > 0) {
+ if (*ptr == SLIP_DELIMITER) {
+ BT_ERR("Too short H5 packet");
+ h5_reset_rx(h5);
+ continue;
+ }
+
+ h5_unslip_one_byte(h5, *ptr);
+
+ ptr++; count--;
+ continue;
+ }
+
+ processed = h5->rx_func(hu, *ptr);
+ if (processed < 0)
+ return processed;
+
+ ptr += processed;
+ count -= processed;
+ }
+
+ return 0;
+}
+
+static int h5_enqueue(struct hci_uart *hu, struct sk_buff *skb)
+{
+ struct h5 *h5 = hu->priv;
+
+ if (skb->len > 0xfff) {
+ BT_ERR("Packet too long (%u bytes)", skb->len);
+ kfree_skb(skb);
+ return 0;
+ }
+
+ if (h5->state != H5_ACTIVE) {
+ BT_ERR("Ignoring HCI data in non-active state");
+ kfree_skb(skb);
+ return 0;
+ }
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_ACLDATA_PKT:
+ case HCI_COMMAND_PKT:
+ skb_queue_tail(&h5->rel, skb);
+ break;
+
+ case HCI_SCODATA_PKT:
+ skb_queue_tail(&h5->unrel, skb);
+ break;
+
+ default:
+ BT_ERR("Unknown packet type %u", bt_cb(skb)->pkt_type);
+ kfree_skb(skb);
+ break;
+ }
+
+ return 0;
+}
+
+static void h5_slip_delim(struct sk_buff *skb)
+{
+ const char delim = SLIP_DELIMITER;
+
+ memcpy(skb_put(skb, 1), &delim, 1);
+}
+
+static void h5_slip_one_byte(struct sk_buff *skb, u8 c)
+{
+ const char esc_delim[2] = { SLIP_ESC, SLIP_ESC_DELIM };
+ const char esc_esc[2] = { SLIP_ESC, SLIP_ESC_ESC };
+
+ switch (c) {
+ case SLIP_DELIMITER:
+ memcpy(skb_put(skb, 2), &esc_delim, 2);
+ break;
+ case SLIP_ESC:
+ memcpy(skb_put(skb, 2), &esc_esc, 2);
+ break;
+ default:
+ memcpy(skb_put(skb, 1), &c, 1);
+ }
+}
+
+static bool valid_packet_type(u8 type)
+{
+ switch (type) {
+ case HCI_ACLDATA_PKT:
+ case HCI_COMMAND_PKT:
+ case HCI_SCODATA_PKT:
+ case HCI_3WIRE_LINK_PKT:
+ case HCI_3WIRE_ACK_PKT:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static struct sk_buff *h5_prepare_pkt(struct hci_uart *hu, u8 pkt_type,
+ const u8 *data, size_t len)
+{
+ struct h5 *h5 = hu->priv;
+ struct sk_buff *nskb;
+ u8 hdr[4];
+ int i;
+
+ if (!valid_packet_type(pkt_type)) {
+ BT_ERR("Unknown packet type %u", pkt_type);
+ return NULL;
+ }
+
+ /*
+ * Max len of packet: (original len + 4 (H5 hdr) + 2 (crc)) * 2
+ * (because bytes 0xc0 and 0xdb are escaped, worst case is when
+ * the packet is all made of 0xc0 and 0xdb) + 2 (0xc0
+ * delimiters at start and end).
+ */
+ nskb = alloc_skb((len + 6) * 2 + 2, GFP_ATOMIC);
+ if (!nskb)
+ return NULL;
+
+ bt_cb(nskb)->pkt_type = pkt_type;
+
+ h5_slip_delim(nskb);
+
+ hdr[0] = h5->tx_ack << 3;
+ clear_bit(H5_TX_ACK_REQ, &h5->flags);
+
+ /* Reliable packet? */
+ if (pkt_type == HCI_ACLDATA_PKT || pkt_type == HCI_COMMAND_PKT) {
+ hdr[0] |= 1 << 7;
+ hdr[0] |= h5->tx_seq;
+ h5->tx_seq = (h5->tx_seq + 1) % 8;
+ }
+
+ hdr[1] = pkt_type | ((len & 0x0f) << 4);
+ hdr[2] = len >> 4;
+ hdr[3] = ~((hdr[0] + hdr[1] + hdr[2]) & 0xff);
+
+ BT_DBG("%s tx: seq %u ack %u crc %u rel %u type %u len %u",
+ hu->hdev->name, H5_HDR_SEQ(hdr), H5_HDR_ACK(hdr),
+ H5_HDR_CRC(hdr), H5_HDR_RELIABLE(hdr), H5_HDR_PKT_TYPE(hdr),
+ H5_HDR_LEN(hdr));
+
+ for (i = 0; i < 4; i++)
+ h5_slip_one_byte(nskb, hdr[i]);
+
+ for (i = 0; i < len; i++)
+ h5_slip_one_byte(nskb, data[i]);
+
+ h5_slip_delim(nskb);
+
+ return nskb;
+}
+
+static struct sk_buff *h5_dequeue(struct hci_uart *hu)
+{
+ struct h5 *h5 = hu->priv;
+ unsigned long flags;
+ struct sk_buff *skb, *nskb;
+
+ if (h5->sleep != H5_AWAKE) {
+ const unsigned char wakeup_req[] = { 0x05, 0xfa };
+
+ if (h5->sleep == H5_WAKING_UP)
+ return NULL;
+
+ h5->sleep = H5_WAKING_UP;
+ BT_DBG("Sending wakeup request");
+
+ mod_timer(&h5->timer, jiffies + HZ / 100);
+ return h5_prepare_pkt(hu, HCI_3WIRE_LINK_PKT, wakeup_req, 2);
+ }
+
+ skb = skb_dequeue(&h5->unrel);
+ if (skb) {
+ nskb = h5_prepare_pkt(hu, bt_cb(skb)->pkt_type,
+ skb->data, skb->len);
+ if (nskb) {
+ kfree_skb(skb);
+ return nskb;
+ }
+
+ skb_queue_head(&h5->unrel, skb);
+ BT_ERR("Could not dequeue pkt because alloc_skb failed");
+ }
+
+ spin_lock_irqsave_nested(&h5->unack.lock, flags, SINGLE_DEPTH_NESTING);
+
+ if (h5->unack.qlen >= h5->tx_win)
+ goto unlock;
+
+ skb = skb_dequeue(&h5->rel);
+ if (skb) {
+ nskb = h5_prepare_pkt(hu, bt_cb(skb)->pkt_type,
+ skb->data, skb->len);
+ if (nskb) {
+ __skb_queue_tail(&h5->unack, skb);
+ mod_timer(&h5->timer, jiffies + H5_ACK_TIMEOUT);
+ spin_unlock_irqrestore(&h5->unack.lock, flags);
+ return nskb;
+ }
+
+ skb_queue_head(&h5->rel, skb);
+ BT_ERR("Could not dequeue pkt because alloc_skb failed");
+ }
+
+unlock:
+ spin_unlock_irqrestore(&h5->unack.lock, flags);
+
+ if (test_bit(H5_TX_ACK_REQ, &h5->flags))
+ return h5_prepare_pkt(hu, HCI_3WIRE_ACK_PKT, NULL, 0);
+
+ return NULL;
+}
+
+static int h5_flush(struct hci_uart *hu)
+{
+ BT_DBG("hu %p", hu);
+ return 0;
+}
+
+static const struct hci_uart_proto h5p = {
+ .id = HCI_UART_3WIRE,
+ .name = "Three-wire (H5)",
+ .open = h5_open,
+ .close = h5_close,
+ .recv = h5_recv,
+ .enqueue = h5_enqueue,
+ .dequeue = h5_dequeue,
+ .flush = h5_flush,
+};
+
+int __init h5_init(void)
+{
+ return hci_uart_register_proto(&h5p);
+}
+
+int __exit h5_deinit(void)
+{
+ return hci_uart_unregister_proto(&h5p);
+}
diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c
new file mode 100644
index 0000000..0c63fce
--- /dev/null
+++ b/drivers/bluetooth/hci_intel.c
@@ -0,0 +1,1328 @@
+/*
+ *
+ * Bluetooth HCI UART driver for Intel devices
+ *
+ * Copyright (C) 2015 Intel Corporation
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/skbuff.h>
+#include <linux/firmware.h>
+#include <linux/module.h>
+#include <linux/wait.h>
+#include <linux/tty.h>
+#include <linux/platform_device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/acpi.h>
+#include <linux/interrupt.h>
+#include <linux/pm_runtime.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "hci_uart.h"
+#include "btintel.h"
+
+#define STATE_BOOTLOADER 0
+#define STATE_DOWNLOADING 1
+#define STATE_FIRMWARE_LOADED 2
+#define STATE_FIRMWARE_FAILED 3
+#define STATE_BOOTING 4
+#define STATE_LPM_ENABLED 5
+#define STATE_TX_ACTIVE 6
+#define STATE_SUSPENDED 7
+#define STATE_LPM_TRANSACTION 8
+
+#define HCI_LPM_WAKE_PKT 0xf0
+#define HCI_LPM_PKT 0xf1
+#define HCI_LPM_MAX_SIZE 10
+#define HCI_LPM_HDR_SIZE HCI_EVENT_HDR_SIZE
+
+#define LPM_OP_TX_NOTIFY 0x00
+#define LPM_OP_SUSPEND_ACK 0x02
+#define LPM_OP_RESUME_ACK 0x03
+
+#define LPM_SUSPEND_DELAY_MS 1000
+
+struct hci_lpm_pkt {
+ __u8 opcode;
+ __u8 dlen;
+ __u8 data[0];
+} __packed;
+
+struct intel_device {
+ struct list_head list;
+ struct platform_device *pdev;
+ struct gpio_desc *reset;
+ struct hci_uart *hu;
+ struct mutex hu_lock;
+ int irq;
+};
+
+static LIST_HEAD(intel_device_list);
+static DEFINE_MUTEX(intel_device_list_lock);
+
+struct intel_data {
+ struct sk_buff *rx_skb;
+ struct sk_buff_head txq;
+ struct work_struct busy_work;
+ struct hci_uart *hu;
+ unsigned long flags;
+};
+
+static u8 intel_convert_speed(unsigned int speed)
+{
+ switch (speed) {
+ case 9600:
+ return 0x00;
+ case 19200:
+ return 0x01;
+ case 38400:
+ return 0x02;
+ case 57600:
+ return 0x03;
+ case 115200:
+ return 0x04;
+ case 230400:
+ return 0x05;
+ case 460800:
+ return 0x06;
+ case 921600:
+ return 0x07;
+ case 1843200:
+ return 0x08;
+ case 3250000:
+ return 0x09;
+ case 2000000:
+ return 0x0a;
+ case 3000000:
+ return 0x0b;
+ default:
+ return 0xff;
+ }
+}
+
+static int intel_wait_booting(struct hci_uart *hu)
+{
+ struct intel_data *intel = hu->priv;
+ int err;
+
+ err = wait_on_bit_timeout(&intel->flags, STATE_BOOTING,
+ TASK_INTERRUPTIBLE,
+ msecs_to_jiffies(1000));
+
+ if (err == 1) {
+ bt_dev_err(hu->hdev, "Device boot interrupted");
+ return -EINTR;
+ }
+
+ if (err) {
+ bt_dev_err(hu->hdev, "Device boot timeout");
+ return -ETIMEDOUT;
+ }
+
+ return err;
+}
+
+#ifdef CONFIG_PM
+static int intel_wait_lpm_transaction(struct hci_uart *hu)
+{
+ struct intel_data *intel = hu->priv;
+ int err;
+
+ err = wait_on_bit_timeout(&intel->flags, STATE_LPM_TRANSACTION,
+ TASK_INTERRUPTIBLE,
+ msecs_to_jiffies(1000));
+
+ if (err == 1) {
+ bt_dev_err(hu->hdev, "LPM transaction interrupted");
+ return -EINTR;
+ }
+
+ if (err) {
+ bt_dev_err(hu->hdev, "LPM transaction timeout");
+ return -ETIMEDOUT;
+ }
+
+ return err;
+}
+
+static int intel_lpm_suspend(struct hci_uart *hu)
+{
+ static const u8 suspend[] = { 0x01, 0x01, 0x01 };
+ struct intel_data *intel = hu->priv;
+ struct sk_buff *skb;
+
+ if (!test_bit(STATE_LPM_ENABLED, &intel->flags) ||
+ test_bit(STATE_SUSPENDED, &intel->flags))
+ return 0;
+
+ if (test_bit(STATE_TX_ACTIVE, &intel->flags))
+ return -EAGAIN;
+
+ bt_dev_dbg(hu->hdev, "Suspending");
+
+ skb = bt_skb_alloc(sizeof(suspend), GFP_KERNEL);
+ if (!skb) {
+ bt_dev_err(hu->hdev, "Failed to alloc memory for LPM packet");
+ return -ENOMEM;
+ }
+
+ memcpy(skb_put(skb, sizeof(suspend)), suspend, sizeof(suspend));
+ bt_cb(skb)->pkt_type = HCI_LPM_PKT;
+
+ set_bit(STATE_LPM_TRANSACTION, &intel->flags);
+
+ /* LPM flow is a priority, enqueue packet at list head */
+ skb_queue_head(&intel->txq, skb);
+ hci_uart_tx_wakeup(hu);
+
+ intel_wait_lpm_transaction(hu);
+ /* Even in case of failure, continue and test the suspended flag */
+
+ clear_bit(STATE_LPM_TRANSACTION, &intel->flags);
+
+ if (!test_bit(STATE_SUSPENDED, &intel->flags)) {
+ bt_dev_err(hu->hdev, "Device suspend error");
+ return -EINVAL;
+ }
+
+ bt_dev_dbg(hu->hdev, "Suspended");
+
+ hci_uart_set_flow_control(hu, true);
+
+ return 0;
+}
+
+static int intel_lpm_resume(struct hci_uart *hu)
+{
+ struct intel_data *intel = hu->priv;
+ struct sk_buff *skb;
+
+ if (!test_bit(STATE_LPM_ENABLED, &intel->flags) ||
+ !test_bit(STATE_SUSPENDED, &intel->flags))
+ return 0;
+
+ bt_dev_dbg(hu->hdev, "Resuming");
+
+ hci_uart_set_flow_control(hu, false);
+
+ skb = bt_skb_alloc(0, GFP_KERNEL);
+ if (!skb) {
+ bt_dev_err(hu->hdev, "Failed to alloc memory for LPM packet");
+ return -ENOMEM;
+ }
+
+ bt_cb(skb)->pkt_type = HCI_LPM_WAKE_PKT;
+
+ set_bit(STATE_LPM_TRANSACTION, &intel->flags);
+
+ /* LPM flow is a priority, enqueue packet at list head */
+ skb_queue_head(&intel->txq, skb);
+ hci_uart_tx_wakeup(hu);
+
+ intel_wait_lpm_transaction(hu);
+ /* Even in case of failure, continue and test the suspended flag */
+
+ clear_bit(STATE_LPM_TRANSACTION, &intel->flags);
+
+ if (test_bit(STATE_SUSPENDED, &intel->flags)) {
+ bt_dev_err(hu->hdev, "Device resume error");
+ return -EINVAL;
+ }
+
+ bt_dev_dbg(hu->hdev, "Resumed");
+
+ return 0;
+}
+#endif /* CONFIG_PM */
+
+static int intel_lpm_host_wake(struct hci_uart *hu)
+{
+ static const u8 lpm_resume_ack[] = { LPM_OP_RESUME_ACK, 0x00 };
+ struct intel_data *intel = hu->priv;
+ struct sk_buff *skb;
+
+ hci_uart_set_flow_control(hu, false);
+
+ clear_bit(STATE_SUSPENDED, &intel->flags);
+
+ skb = bt_skb_alloc(sizeof(lpm_resume_ack), GFP_KERNEL);
+ if (!skb) {
+ bt_dev_err(hu->hdev, "Failed to alloc memory for LPM packet");
+ return -ENOMEM;
+ }
+
+ memcpy(skb_put(skb, sizeof(lpm_resume_ack)), lpm_resume_ack,
+ sizeof(lpm_resume_ack));
+ bt_cb(skb)->pkt_type = HCI_LPM_PKT;
+
+ /* LPM flow is a priority, enqueue packet at list head */
+ skb_queue_head(&intel->txq, skb);
+ hci_uart_tx_wakeup(hu);
+
+ bt_dev_dbg(hu->hdev, "Resumed by controller");
+
+ return 0;
+}
+
+static irqreturn_t intel_irq(int irq, void *dev_id)
+{
+ struct intel_device *idev = dev_id;
+
+ dev_info(&idev->pdev->dev, "hci_intel irq\n");
+
+ mutex_lock(&idev->hu_lock);
+ if (idev->hu)
+ intel_lpm_host_wake(idev->hu);
+ mutex_unlock(&idev->hu_lock);
+
+ /* Host/Controller are now LPM resumed, trigger a new delayed suspend */
+ pm_runtime_get(&idev->pdev->dev);
+ pm_runtime_mark_last_busy(&idev->pdev->dev);
+ pm_runtime_put_autosuspend(&idev->pdev->dev);
+
+ return IRQ_HANDLED;
+}
+
+static int intel_set_power(struct hci_uart *hu, bool powered)
+{
+ struct list_head *p;
+ int err = -ENODEV;
+
+ if (!hu->tty->dev)
+ return err;
+
+ mutex_lock(&intel_device_list_lock);
+
+ list_for_each(p, &intel_device_list) {
+ struct intel_device *idev = list_entry(p, struct intel_device,
+ list);
+
+ /* tty device and pdev device should share the same parent
+ * which is the UART port.
+ */
+ if (hu->tty->dev->parent != idev->pdev->dev.parent)
+ continue;
+
+ if (!idev->reset) {
+ err = -ENOTSUPP;
+ break;
+ }
+
+ BT_INFO("hu %p, Switching compatible pm device (%s) to %u",
+ hu, dev_name(&idev->pdev->dev), powered);
+
+ gpiod_set_value(idev->reset, powered);
+
+ /* Provide to idev a hu reference which is used to run LPM
+ * transactions (lpm suspend/resume) from PM callbacks.
+ * hu needs to be protected against concurrent removing during
+ * these PM ops.
+ */
+ mutex_lock(&idev->hu_lock);
+ idev->hu = powered ? hu : NULL;
+ mutex_unlock(&idev->hu_lock);
+
+ if (idev->irq < 0)
+ break;
+
+ if (powered && device_can_wakeup(&idev->pdev->dev)) {
+ err = devm_request_threaded_irq(&idev->pdev->dev,
+ idev->irq, NULL,
+ intel_irq,
+ IRQF_ONESHOT,
+ "bt-host-wake", idev);
+ if (err) {
+ BT_ERR("hu %p, unable to allocate irq-%d",
+ hu, idev->irq);
+ break;
+ }
+
+ device_wakeup_enable(&idev->pdev->dev);
+
+ pm_runtime_set_active(&idev->pdev->dev);
+ pm_runtime_use_autosuspend(&idev->pdev->dev);
+ pm_runtime_set_autosuspend_delay(&idev->pdev->dev,
+ LPM_SUSPEND_DELAY_MS);
+ pm_runtime_enable(&idev->pdev->dev);
+ } else if (!powered && device_may_wakeup(&idev->pdev->dev)) {
+ devm_free_irq(&idev->pdev->dev, idev->irq, idev);
+ device_wakeup_disable(&idev->pdev->dev);
+
+ pm_runtime_disable(&idev->pdev->dev);
+ }
+ }
+
+ mutex_unlock(&intel_device_list_lock);
+
+ return err;
+}
+
+static void intel_busy_work(struct work_struct *work)
+{
+ struct list_head *p;
+ struct intel_data *intel = container_of(work, struct intel_data,
+ busy_work);
+
+ if (!intel->hu->tty->dev)
+ return;
+
+ /* Link is busy, delay the suspend */
+ mutex_lock(&intel_device_list_lock);
+ list_for_each(p, &intel_device_list) {
+ struct intel_device *idev = list_entry(p, struct intel_device,
+ list);
+
+ if (intel->hu->tty->dev->parent == idev->pdev->dev.parent) {
+ pm_runtime_get(&idev->pdev->dev);
+ pm_runtime_mark_last_busy(&idev->pdev->dev);
+ pm_runtime_put_autosuspend(&idev->pdev->dev);
+ break;
+ }
+ }
+ mutex_unlock(&intel_device_list_lock);
+}
+
+static int intel_open(struct hci_uart *hu)
+{
+ struct intel_data *intel;
+
+ BT_DBG("hu %p", hu);
+
+ intel = kzalloc(sizeof(*intel), GFP_KERNEL);
+ if (!intel)
+ return -ENOMEM;
+
+ skb_queue_head_init(&intel->txq);
+ INIT_WORK(&intel->busy_work, intel_busy_work);
+
+ intel->hu = hu;
+
+ hu->priv = intel;
+
+ if (!intel_set_power(hu, true))
+ set_bit(STATE_BOOTING, &intel->flags);
+
+ return 0;
+}
+
+static int intel_close(struct hci_uart *hu)
+{
+ struct intel_data *intel = hu->priv;
+
+ BT_DBG("hu %p", hu);
+
+ cancel_work_sync(&intel->busy_work);
+
+ intel_set_power(hu, false);
+
+ skb_queue_purge(&intel->txq);
+ kfree_skb(intel->rx_skb);
+ kfree(intel);
+
+ hu->priv = NULL;
+ return 0;
+}
+
+static int intel_flush(struct hci_uart *hu)
+{
+ struct intel_data *intel = hu->priv;
+
+ BT_DBG("hu %p", hu);
+
+ skb_queue_purge(&intel->txq);
+
+ return 0;
+}
+
+static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
+{
+ struct sk_buff *skb;
+ struct hci_event_hdr *hdr;
+ struct hci_ev_cmd_complete *evt;
+
+ skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
+ if (!skb)
+ return -ENOMEM;
+
+ hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
+ hdr->evt = HCI_EV_CMD_COMPLETE;
+ hdr->plen = sizeof(*evt) + 1;
+
+ evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
+ evt->ncmd = 0x01;
+ evt->opcode = cpu_to_le16(opcode);
+
+ *skb_put(skb, 1) = 0x00;
+
+ bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
+
+ return hci_recv_frame(hdev, skb);
+}
+
+static int intel_set_baudrate(struct hci_uart *hu, unsigned int speed)
+{
+ struct intel_data *intel = hu->priv;
+ struct hci_dev *hdev = hu->hdev;
+ u8 speed_cmd[] = { 0x06, 0xfc, 0x01, 0x00 };
+ struct sk_buff *skb;
+ int err;
+
+ /* This can be the first command sent to the chip, check
+ * that the controller is ready.
+ */
+ err = intel_wait_booting(hu);
+
+ clear_bit(STATE_BOOTING, &intel->flags);
+
+ /* In case of timeout, try to continue anyway */
+ if (err && err != ETIMEDOUT)
+ return err;
+
+ bt_dev_info(hdev, "Change controller speed to %d", speed);
+
+ speed_cmd[3] = intel_convert_speed(speed);
+ if (speed_cmd[3] == 0xff) {
+ bt_dev_err(hdev, "Unsupported speed");
+ return -EINVAL;
+ }
+
+ /* Device will not accept speed change if Intel version has not been
+ * previously requested.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Reading Intel version information failed (%ld)",
+ PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+ kfree_skb(skb);
+
+ skb = bt_skb_alloc(sizeof(speed_cmd), GFP_KERNEL);
+ if (!skb) {
+ bt_dev_err(hdev, "Failed to alloc memory for baudrate packet");
+ return -ENOMEM;
+ }
+
+ memcpy(skb_put(skb, sizeof(speed_cmd)), speed_cmd, sizeof(speed_cmd));
+ bt_cb(skb)->pkt_type = HCI_COMMAND_PKT;
+
+ hci_uart_set_flow_control(hu, true);
+
+ skb_queue_tail(&intel->txq, skb);
+ hci_uart_tx_wakeup(hu);
+
+ /* wait 100ms to change baudrate on controller side */
+ msleep(100);
+
+ hci_uart_set_baudrate(hu, speed);
+ hci_uart_set_flow_control(hu, false);
+
+ return 0;
+}
+
+static int intel_setup(struct hci_uart *hu)
+{
+ static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
+ 0x00, 0x08, 0x04, 0x00 };
+ static const u8 lpm_param[] = { 0x03, 0x07, 0x01, 0x0b };
+ struct intel_data *intel = hu->priv;
+ struct intel_device *idev = NULL;
+ struct hci_dev *hdev = hu->hdev;
+ struct sk_buff *skb;
+ struct intel_version *ver;
+ struct intel_boot_params *params;
+ struct list_head *p;
+ const struct firmware *fw;
+ const u8 *fw_ptr;
+ char fwname[64];
+ u32 frag_len;
+ ktime_t calltime, delta, rettime;
+ unsigned long long duration;
+ unsigned int init_speed, oper_speed;
+ int speed_change = 0;
+ int err;
+
+ bt_dev_dbg(hdev, "start intel_setup");
+
+ hu->hdev->set_diag = btintel_set_diag;
+ hu->hdev->set_bdaddr = btintel_set_bdaddr;
+
+ calltime = ktime_get();
+
+ if (hu->init_speed)
+ init_speed = hu->init_speed;
+ else
+ init_speed = hu->proto->init_speed;
+
+ if (hu->oper_speed)
+ oper_speed = hu->oper_speed;
+ else
+ oper_speed = hu->proto->oper_speed;
+
+ if (oper_speed && init_speed && oper_speed != init_speed)
+ speed_change = 1;
+
+ /* Check that the controller is ready */
+ err = intel_wait_booting(hu);
+
+ clear_bit(STATE_BOOTING, &intel->flags);
+
+ /* In case of timeout, try to continue anyway */
+ if (err && err != ETIMEDOUT)
+ return err;
+
+ set_bit(STATE_BOOTLOADER, &intel->flags);
+
+ /* Read the Intel version information to determine if the device
+ * is in bootloader mode or if it already has operational firmware
+ * loaded.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Reading Intel version information failed (%ld)",
+ PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+
+ if (skb->len != sizeof(*ver)) {
+ bt_dev_err(hdev, "Intel version event size mismatch");
+ kfree_skb(skb);
+ return -EILSEQ;
+ }
+
+ ver = (struct intel_version *)skb->data;
+ if (ver->status) {
+ bt_dev_err(hdev, "Intel version command failure (%02x)",
+ ver->status);
+ err = -bt_to_errno(ver->status);
+ kfree_skb(skb);
+ return err;
+ }
+
+ /* The hardware platform number has a fixed value of 0x37 and
+ * for now only accept this single value.
+ */
+ if (ver->hw_platform != 0x37) {
+ bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
+ ver->hw_platform);
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
+ * supported by this firmware loading method. This check has been
+ * put in place to ensure correct forward compatibility options
+ * when newer hardware variants come along.
+ */
+ if (ver->hw_variant != 0x0b) {
+ bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
+ ver->hw_variant);
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ btintel_version_info(hdev, ver);
+
+ /* The firmware variant determines if the device is in bootloader
+ * mode or is running operational firmware. The value 0x06 identifies
+ * the bootloader and the value 0x23 identifies the operational
+ * firmware.
+ *
+ * When the operational firmware is already present, then only
+ * the check for valid Bluetooth device address is needed. This
+ * determines if the device will be added as configured or
+ * unconfigured controller.
+ *
+ * It is not possible to use the Secure Boot Parameters in this
+ * case since that command is only available in bootloader mode.
+ */
+ if (ver->fw_variant == 0x23) {
+ kfree_skb(skb);
+ clear_bit(STATE_BOOTLOADER, &intel->flags);
+ btintel_check_bdaddr(hdev);
+ return 0;
+ }
+
+ /* If the device is not in bootloader mode, then the only possible
+ * choice is to return an error and abort the device initialization.
+ */
+ if (ver->fw_variant != 0x06) {
+ bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
+ ver->fw_variant);
+ kfree_skb(skb);
+ return -ENODEV;
+ }
+
+ kfree_skb(skb);
+
+ /* Read the secure boot parameters to identify the operating
+ * details of the bootloader.
+ */
+ skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Reading Intel boot parameters failed (%ld)",
+ PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+
+ if (skb->len != sizeof(*params)) {
+ bt_dev_err(hdev, "Intel boot parameters size mismatch");
+ kfree_skb(skb);
+ return -EILSEQ;
+ }
+
+ params = (struct intel_boot_params *)skb->data;
+ if (params->status) {
+ bt_dev_err(hdev, "Intel boot parameters command failure (%02x)",
+ params->status);
+ err = -bt_to_errno(params->status);
+ kfree_skb(skb);
+ return err;
+ }
+
+ bt_dev_info(hdev, "Device revision is %u",
+ le16_to_cpu(params->dev_revid));
+
+ bt_dev_info(hdev, "Secure boot is %s",
+ params->secure_boot ? "enabled" : "disabled");
+
+ bt_dev_info(hdev, "Minimum firmware build %u week %u %u",
+ params->min_fw_build_nn, params->min_fw_build_cw,
+ 2000 + params->min_fw_build_yy);
+
+ /* It is required that every single firmware fragment is acknowledged
+ * with a command complete event. If the boot parameters indicate
+ * that this bootloader does not send them, then abort the setup.
+ */
+ if (params->limited_cce != 0x00) {
+ bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
+ params->limited_cce);
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ /* If the OTP has no valid Bluetooth device address, then there will
+ * also be no valid address for the operational firmware.
+ */
+ if (!bacmp(¶ms->otp_bdaddr, BDADDR_ANY)) {
+ bt_dev_info(hdev, "No device address configured");
+ set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
+ }
+
+ /* With this Intel bootloader only the hardware variant and device
+ * revision information are used to select the right firmware.
+ *
+ * Currently this bootloader support is limited to hardware variant
+ * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
+ */
+ snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
+ le16_to_cpu(params->dev_revid));
+
+ err = request_firmware(&fw, fwname, &hdev->dev);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to load Intel firmware file (%d)",
+ err);
+ kfree_skb(skb);
+ return err;
+ }
+
+ bt_dev_info(hdev, "Found device firmware: %s", fwname);
+
+ /* Save the DDC file name for later */
+ snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
+ le16_to_cpu(params->dev_revid));
+
+ kfree_skb(skb);
+
+ if (fw->size < 644) {
+ bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
+ fw->size);
+ err = -EBADF;
+ goto done;
+ }
+
+ set_bit(STATE_DOWNLOADING, &intel->flags);
+
+ /* Start the firmware download transaction with the Init fragment
+ * represented by the 128 bytes of CSS header.
+ */
+ err = btintel_secure_send(hdev, 0x00, 128, fw->data);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to send firmware header (%d)", err);
+ goto done;
+ }
+
+ /* Send the 256 bytes of public key information from the firmware
+ * as the PKey fragment.
+ */
+ err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to send firmware public key (%d)",
+ err);
+ goto done;
+ }
+
+ /* Send the 256 bytes of signature information from the firmware
+ * as the Sign fragment.
+ */
+ err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to send firmware signature (%d)",
+ err);
+ goto done;
+ }
+
+ fw_ptr = fw->data + 644;
+ frag_len = 0;
+
+ while (fw_ptr - fw->data < fw->size) {
+ struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
+
+ frag_len += sizeof(*cmd) + cmd->plen;
+
+ bt_dev_dbg(hdev, "Patching %td/%zu", (fw_ptr - fw->data),
+ fw->size);
+
+ /* The parameter length of the secure send command requires
+ * a 4 byte alignment. It happens so that the firmware file
+ * contains proper Intel_NOP commands to align the fragments
+ * as needed.
+ *
+ * Send set of commands with 4 byte alignment from the
+ * firmware data buffer as a single Data fragement.
+ */
+ if (frag_len % 4)
+ continue;
+
+ /* Send each command from the firmware data buffer as
+ * a single Data fragment.
+ */
+ err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
+ if (err < 0) {
+ bt_dev_err(hdev, "Failed to send firmware data (%d)",
+ err);
+ goto done;
+ }
+
+ fw_ptr += frag_len;
+ frag_len = 0;
+ }
+
+ set_bit(STATE_FIRMWARE_LOADED, &intel->flags);
+
+ bt_dev_info(hdev, "Waiting for firmware download to complete");
+
+ /* Before switching the device into operational mode and with that
+ * booting the loaded firmware, wait for the bootloader notification
+ * that all fragments have been successfully received.
+ *
+ * When the event processing receives the notification, then the
+ * STATE_DOWNLOADING flag will be cleared.
+ *
+ * The firmware loading should not take longer than 5 seconds
+ * and thus just timeout if that happens and fail the setup
+ * of this device.
+ */
+ err = wait_on_bit_timeout(&intel->flags, STATE_DOWNLOADING,
+ TASK_INTERRUPTIBLE,
+ msecs_to_jiffies(5000));
+ if (err == 1) {
+ bt_dev_err(hdev, "Firmware loading interrupted");
+ err = -EINTR;
+ goto done;
+ }
+
+ if (err) {
+ bt_dev_err(hdev, "Firmware loading timeout");
+ err = -ETIMEDOUT;
+ goto done;
+ }
+
+ if (test_bit(STATE_FIRMWARE_FAILED, &intel->flags)) {
+ bt_dev_err(hdev, "Firmware loading failed");
+ err = -ENOEXEC;
+ goto done;
+ }
+
+ rettime = ktime_get();
+ delta = ktime_sub(rettime, calltime);
+ duration = (unsigned long long) ktime_to_ns(delta) >> 10;
+
+ bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
+
+done:
+ release_firmware(fw);
+
+ if (err < 0)
+ return err;
+
+ /* We need to restore the default speed before Intel reset */
+ if (speed_change) {
+ err = intel_set_baudrate(hu, init_speed);
+ if (err)
+ return err;
+ }
+
+ calltime = ktime_get();
+
+ set_bit(STATE_BOOTING, &intel->flags);
+
+ skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ kfree_skb(skb);
+
+ /* The bootloader will not indicate when the device is ready. This
+ * is done by the operational firmware sending bootup notification.
+ *
+ * Booting into operational firmware should not take longer than
+ * 1 second. However if that happens, then just fail the setup
+ * since something went wrong.
+ */
+ bt_dev_info(hdev, "Waiting for device to boot");
+
+ err = intel_wait_booting(hu);
+ if (err)
+ return err;
+
+ clear_bit(STATE_BOOTING, &intel->flags);
+
+ rettime = ktime_get();
+ delta = ktime_sub(rettime, calltime);
+ duration = (unsigned long long) ktime_to_ns(delta) >> 10;
+
+ bt_dev_info(hdev, "Device booted in %llu usecs", duration);
+
+ /* Enable LPM if matching pdev with wakeup enabled */
+ mutex_lock(&intel_device_list_lock);
+ list_for_each(p, &intel_device_list) {
+ struct intel_device *dev = list_entry(p, struct intel_device,
+ list);
+ if (!hu->tty->dev)
+ break;
+ if (hu->tty->dev->parent == dev->pdev->dev.parent) {
+ if (device_may_wakeup(&dev->pdev->dev))
+ idev = dev;
+ break;
+ }
+ }
+ mutex_unlock(&intel_device_list_lock);
+
+ if (!idev)
+ goto no_lpm;
+
+ bt_dev_info(hdev, "Enabling LPM");
+
+ skb = __hci_cmd_sync(hdev, 0xfc8b, sizeof(lpm_param), lpm_param,
+ HCI_CMD_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Failed to enable LPM");
+ goto no_lpm;
+ }
+ kfree_skb(skb);
+
+ set_bit(STATE_LPM_ENABLED, &intel->flags);
+
+no_lpm:
+ /* Ignore errors, device can work without DDC parameters */
+ btintel_load_ddc_config(hdev, fwname);
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_CMD_TIMEOUT);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+ kfree_skb(skb);
+
+ if (speed_change) {
+ err = intel_set_baudrate(hu, oper_speed);
+ if (err)
+ return err;
+ }
+
+ bt_dev_info(hdev, "Setup complete");
+
+ clear_bit(STATE_BOOTLOADER, &intel->flags);
+
+ return 0;
+}
+
+static int intel_recv_event(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct hci_uart *hu = hci_get_drvdata(hdev);
+ struct intel_data *intel = hu->priv;
+ struct hci_event_hdr *hdr;
+
+ if (!test_bit(STATE_BOOTLOADER, &intel->flags) &&
+ !test_bit(STATE_BOOTING, &intel->flags))
+ goto recv;
+
+ hdr = (void *)skb->data;
+
+ /* When the firmware loading completes the device sends
+ * out a vendor specific event indicating the result of
+ * the firmware loading.
+ */
+ if (skb->len == 7 && hdr->evt == 0xff && hdr->plen == 0x05 &&
+ skb->data[2] == 0x06) {
+ if (skb->data[3] != 0x00)
+ set_bit(STATE_FIRMWARE_FAILED, &intel->flags);
+
+ if (test_and_clear_bit(STATE_DOWNLOADING, &intel->flags) &&
+ test_bit(STATE_FIRMWARE_LOADED, &intel->flags)) {
+ smp_mb__after_atomic();
+ wake_up_bit(&intel->flags, STATE_DOWNLOADING);
+ }
+
+ /* When switching to the operational firmware the device
+ * sends a vendor specific event indicating that the bootup
+ * completed.
+ */
+ } else if (skb->len == 9 && hdr->evt == 0xff && hdr->plen == 0x07 &&
+ skb->data[2] == 0x02) {
+ if (test_and_clear_bit(STATE_BOOTING, &intel->flags)) {
+ smp_mb__after_atomic();
+ wake_up_bit(&intel->flags, STATE_BOOTING);
+ }
+ }
+recv:
+ return hci_recv_frame(hdev, skb);
+}
+
+static void intel_recv_lpm_notify(struct hci_dev *hdev, int value)
+{
+ struct hci_uart *hu = hci_get_drvdata(hdev);
+ struct intel_data *intel = hu->priv;
+
+ bt_dev_dbg(hdev, "TX idle notification (%d)", value);
+
+ if (value) {
+ set_bit(STATE_TX_ACTIVE, &intel->flags);
+ schedule_work(&intel->busy_work);
+ } else {
+ clear_bit(STATE_TX_ACTIVE, &intel->flags);
+ }
+}
+
+static int intel_recv_lpm(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct hci_lpm_pkt *lpm = (void *)skb->data;
+ struct hci_uart *hu = hci_get_drvdata(hdev);
+ struct intel_data *intel = hu->priv;
+
+ switch (lpm->opcode) {
+ case LPM_OP_TX_NOTIFY:
+ if (lpm->dlen < 1) {
+ bt_dev_err(hu->hdev, "Invalid LPM notification packet");
+ break;
+ }
+ intel_recv_lpm_notify(hdev, lpm->data[0]);
+ break;
+ case LPM_OP_SUSPEND_ACK:
+ set_bit(STATE_SUSPENDED, &intel->flags);
+ if (test_and_clear_bit(STATE_LPM_TRANSACTION, &intel->flags)) {
+ smp_mb__after_atomic();
+ wake_up_bit(&intel->flags, STATE_LPM_TRANSACTION);
+ }
+ break;
+ case LPM_OP_RESUME_ACK:
+ clear_bit(STATE_SUSPENDED, &intel->flags);
+ if (test_and_clear_bit(STATE_LPM_TRANSACTION, &intel->flags)) {
+ smp_mb__after_atomic();
+ wake_up_bit(&intel->flags, STATE_LPM_TRANSACTION);
+ }
+ break;
+ default:
+ bt_dev_err(hdev, "Unknown LPM opcode (%02x)", lpm->opcode);
+ break;
+ }
+
+ kfree_skb(skb);
+
+ return 0;
+}
+
+#define INTEL_RECV_LPM \
+ .type = HCI_LPM_PKT, \
+ .hlen = HCI_LPM_HDR_SIZE, \
+ .loff = 1, \
+ .lsize = 1, \
+ .maxlen = HCI_LPM_MAX_SIZE
+
+static const struct h4_recv_pkt intel_recv_pkts[] = {
+ { H4_RECV_ACL, .recv = hci_recv_frame },
+ { H4_RECV_SCO, .recv = hci_recv_frame },
+ { H4_RECV_EVENT, .recv = intel_recv_event },
+ { INTEL_RECV_LPM, .recv = intel_recv_lpm },
+};
+
+static int intel_recv(struct hci_uart *hu, const void *data, int count)
+{
+ struct intel_data *intel = hu->priv;
+
+ if (!test_bit(HCI_UART_REGISTERED, &hu->flags))
+ return -EUNATCH;
+
+ intel->rx_skb = h4_recv_buf(hu->hdev, intel->rx_skb, data, count,
+ intel_recv_pkts,
+ ARRAY_SIZE(intel_recv_pkts));
+ if (IS_ERR(intel->rx_skb)) {
+ int err = PTR_ERR(intel->rx_skb);
+ bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err);
+ intel->rx_skb = NULL;
+ return err;
+ }
+
+ return count;
+}
+
+static int intel_enqueue(struct hci_uart *hu, struct sk_buff *skb)
+{
+ struct intel_data *intel = hu->priv;
+ struct list_head *p;
+
+ BT_DBG("hu %p skb %p", hu, skb);
+
+ if (!hu->tty->dev)
+ goto out_enqueue;
+
+ /* Be sure our controller is resumed and potential LPM transaction
+ * completed before enqueuing any packet.
+ */
+ mutex_lock(&intel_device_list_lock);
+ list_for_each(p, &intel_device_list) {
+ struct intel_device *idev = list_entry(p, struct intel_device,
+ list);
+
+ if (hu->tty->dev->parent == idev->pdev->dev.parent) {
+ pm_runtime_get_sync(&idev->pdev->dev);
+ pm_runtime_mark_last_busy(&idev->pdev->dev);
+ pm_runtime_put_autosuspend(&idev->pdev->dev);
+ break;
+ }
+ }
+ mutex_unlock(&intel_device_list_lock);
+out_enqueue:
+ skb_queue_tail(&intel->txq, skb);
+
+ return 0;
+}
+
+static struct sk_buff *intel_dequeue(struct hci_uart *hu)
+{
+ struct intel_data *intel = hu->priv;
+ struct sk_buff *skb;
+
+ skb = skb_dequeue(&intel->txq);
+ if (!skb)
+ return skb;
+
+ if (test_bit(STATE_BOOTLOADER, &intel->flags) &&
+ (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT)) {
+ struct hci_command_hdr *cmd = (void *)skb->data;
+ __u16 opcode = le16_to_cpu(cmd->opcode);
+
+ /* When the 0xfc01 command is issued to boot into
+ * the operational firmware, it will actually not
+ * send a command complete event. To keep the flow
+ * control working inject that event here.
+ */
+ if (opcode == 0xfc01)
+ inject_cmd_complete(hu->hdev, opcode);
+ }
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+
+ return skb;
+}
+
+static const struct hci_uart_proto intel_proto = {
+ .id = HCI_UART_INTEL,
+ .name = "Intel",
+ .manufacturer = 2,
+ .init_speed = 115200,
+ .oper_speed = 3000000,
+ .open = intel_open,
+ .close = intel_close,
+ .flush = intel_flush,
+ .setup = intel_setup,
+ .set_baudrate = intel_set_baudrate,
+ .recv = intel_recv,
+ .enqueue = intel_enqueue,
+ .dequeue = intel_dequeue,
+};
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id intel_acpi_match[] = {
+ { "INT33E1", 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, intel_acpi_match);
+#endif
+
+#ifdef CONFIG_PM
+static int intel_suspend_device(struct device *dev)
+{
+ struct intel_device *idev = dev_get_drvdata(dev);
+
+ mutex_lock(&idev->hu_lock);
+ if (idev->hu)
+ intel_lpm_suspend(idev->hu);
+ mutex_unlock(&idev->hu_lock);
+
+ return 0;
+}
+
+static int intel_resume_device(struct device *dev)
+{
+ struct intel_device *idev = dev_get_drvdata(dev);
+
+ mutex_lock(&idev->hu_lock);
+ if (idev->hu)
+ intel_lpm_resume(idev->hu);
+ mutex_unlock(&idev->hu_lock);
+
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_PM_SLEEP
+static int intel_suspend(struct device *dev)
+{
+ struct intel_device *idev = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev))
+ enable_irq_wake(idev->irq);
+
+ return intel_suspend_device(dev);
+}
+
+static int intel_resume(struct device *dev)
+{
+ struct intel_device *idev = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev))
+ disable_irq_wake(idev->irq);
+
+ return intel_resume_device(dev);
+}
+#endif
+
+static const struct dev_pm_ops intel_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(intel_suspend, intel_resume)
+ SET_RUNTIME_PM_OPS(intel_suspend_device, intel_resume_device, NULL)
+};
+
+static int intel_probe(struct platform_device *pdev)
+{
+ struct intel_device *idev;
+
+ idev = devm_kzalloc(&pdev->dev, sizeof(*idev), GFP_KERNEL);
+ if (!idev)
+ return -ENOMEM;
+
+ mutex_init(&idev->hu_lock);
+
+ idev->pdev = pdev;
+
+ idev->reset = devm_gpiod_get(&pdev->dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(idev->reset)) {
+ dev_err(&pdev->dev, "Unable to retrieve gpio\n");
+ return PTR_ERR(idev->reset);
+ }
+
+ idev->irq = platform_get_irq(pdev, 0);
+ if (idev->irq < 0) {
+ struct gpio_desc *host_wake;
+
+ dev_err(&pdev->dev, "No IRQ, falling back to gpio-irq\n");
+
+ host_wake = devm_gpiod_get(&pdev->dev, "host-wake", GPIOD_IN);
+ if (IS_ERR(host_wake)) {
+ dev_err(&pdev->dev, "Unable to retrieve IRQ\n");
+ goto no_irq;
+ }
+
+ idev->irq = gpiod_to_irq(host_wake);
+ if (idev->irq < 0) {
+ dev_err(&pdev->dev, "No corresponding irq for gpio\n");
+ goto no_irq;
+ }
+ }
+
+ /* Only enable wake-up/irq when controller is powered */
+ device_set_wakeup_capable(&pdev->dev, true);
+ device_wakeup_disable(&pdev->dev);
+
+no_irq:
+ platform_set_drvdata(pdev, idev);
+
+ /* Place this instance on the device list */
+ mutex_lock(&intel_device_list_lock);
+ list_add_tail(&idev->list, &intel_device_list);
+ mutex_unlock(&intel_device_list_lock);
+
+ dev_info(&pdev->dev, "registered, gpio(%d)/irq(%d).\n",
+ desc_to_gpio(idev->reset), idev->irq);
+
+ return 0;
+}
+
+static int intel_remove(struct platform_device *pdev)
+{
+ struct intel_device *idev = platform_get_drvdata(pdev);
+
+ device_wakeup_disable(&pdev->dev);
+
+ mutex_lock(&intel_device_list_lock);
+ list_del(&idev->list);
+ mutex_unlock(&intel_device_list_lock);
+
+ dev_info(&pdev->dev, "unregistered.\n");
+
+ return 0;
+}
+
+static struct platform_driver intel_driver = {
+ .probe = intel_probe,
+ .remove = intel_remove,
+ .driver = {
+ .name = "hci_intel",
+ .acpi_match_table = ACPI_PTR(intel_acpi_match),
+ .pm = &intel_pm_ops,
+ },
+};
+
+int __init intel_init(void)
+{
+ platform_driver_register(&intel_driver);
+
+ return hci_uart_register_proto(&intel_proto);
+}
+
+int __exit intel_deinit(void)
+{
+ platform_driver_unregister(&intel_driver);
+
+ return hci_uart_unregister_proto(&intel_proto);
+}
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
new file mode 100644
index 0000000..96bcec5
--- /dev/null
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -0,0 +1,858 @@
+/*
+ *
+ * Bluetooth HCI UART driver
+ *
+ * Copyright (C) 2000-2001 Qualcomm Incorporated
+ * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
+ * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/poll.h>
+
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/signal.h>
+#include <linux/ioctl.h>
+#include <linux/skbuff.h>
+#include <linux/firmware.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btintel.h"
+#include "btbcm.h"
+#include "hci_uart.h"
+
+#define VERSION "2.3"
+
+static const struct hci_uart_proto *hup[HCI_UART_MAX_PROTO];
+
+int hci_uart_register_proto(const struct hci_uart_proto *p)
+{
+ if (p->id >= HCI_UART_MAX_PROTO)
+ return -EINVAL;
+
+ if (hup[p->id])
+ return -EEXIST;
+
+ hup[p->id] = p;
+
+ BT_INFO("HCI UART protocol %s registered", p->name);
+
+ return 0;
+}
+
+int hci_uart_unregister_proto(const struct hci_uart_proto *p)
+{
+ if (p->id >= HCI_UART_MAX_PROTO)
+ return -EINVAL;
+
+ if (!hup[p->id])
+ return -EINVAL;
+
+ hup[p->id] = NULL;
+
+ return 0;
+}
+
+static const struct hci_uart_proto *hci_uart_get_proto(unsigned int id)
+{
+ if (id >= HCI_UART_MAX_PROTO)
+ return NULL;
+
+ return hup[id];
+}
+
+static inline void hci_uart_tx_complete(struct hci_uart *hu, int pkt_type)
+{
+ struct hci_dev *hdev = hu->hdev;
+
+ /* Update HCI stat counters */
+ switch (pkt_type) {
+ case HCI_COMMAND_PKT:
+ hdev->stat.cmd_tx++;
+ break;
+
+ case HCI_ACLDATA_PKT:
+ hdev->stat.acl_tx++;
+ break;
+
+ case HCI_SCODATA_PKT:
+ hdev->stat.sco_tx++;
+ break;
+ }
+}
+
+static inline struct sk_buff *hci_uart_dequeue(struct hci_uart *hu)
+{
+ struct sk_buff *skb = hu->tx_skb;
+
+ if (!skb)
+ skb = hu->proto->dequeue(hu);
+ else
+ hu->tx_skb = NULL;
+
+ return skb;
+}
+
+int hci_uart_tx_wakeup(struct hci_uart *hu)
+{
+ if (test_and_set_bit(HCI_UART_SENDING, &hu->tx_state)) {
+ set_bit(HCI_UART_TX_WAKEUP, &hu->tx_state);
+ return 0;
+ }
+
+ BT_DBG("");
+
+ schedule_work(&hu->write_work);
+
+ return 0;
+}
+
+static void hci_uart_write_work(struct work_struct *work)
+{
+ struct hci_uart *hu = container_of(work, struct hci_uart, write_work);
+ struct tty_struct *tty = hu->tty;
+ struct hci_dev *hdev = hu->hdev;
+ struct sk_buff *skb;
+
+ /* REVISIT: should we cope with bad skbs or ->write() returning
+ * and error value ?
+ */
+
+restart:
+ clear_bit(HCI_UART_TX_WAKEUP, &hu->tx_state);
+
+ while ((skb = hci_uart_dequeue(hu))) {
+ int len;
+
+ set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
+ len = tty->ops->write(tty, skb->data, skb->len);
+ hdev->stat.byte_tx += len;
+
+ skb_pull(skb, len);
+ if (skb->len) {
+ hu->tx_skb = skb;
+ break;
+ }
+
+ hci_uart_tx_complete(hu, bt_cb(skb)->pkt_type);
+ kfree_skb(skb);
+ }
+
+ if (test_bit(HCI_UART_TX_WAKEUP, &hu->tx_state))
+ goto restart;
+
+ clear_bit(HCI_UART_SENDING, &hu->tx_state);
+}
+
+static void hci_uart_init_work(struct work_struct *work)
+{
+ struct hci_uart *hu = container_of(work, struct hci_uart, init_ready);
+ int err;
+
+ if (!test_and_clear_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags))
+ return;
+
+ err = hci_register_dev(hu->hdev);
+ if (err < 0) {
+ BT_ERR("Can't register HCI device");
+ hci_free_dev(hu->hdev);
+ hu->hdev = NULL;
+ hu->proto->close(hu);
+ }
+
+ set_bit(HCI_UART_REGISTERED, &hu->flags);
+}
+
+int hci_uart_init_ready(struct hci_uart *hu)
+{
+ if (!test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags))
+ return -EALREADY;
+
+ schedule_work(&hu->init_ready);
+
+ return 0;
+}
+
+/* ------- Interface to HCI layer ------ */
+/* Initialize device */
+static int hci_uart_open(struct hci_dev *hdev)
+{
+ BT_DBG("%s %p", hdev->name, hdev);
+
+ /* Nothing to do for UART driver */
+ return 0;
+}
+
+/* Reset device */
+static int hci_uart_flush(struct hci_dev *hdev)
+{
+ struct hci_uart *hu = hci_get_drvdata(hdev);
+ struct tty_struct *tty = hu->tty;
+
+ BT_DBG("hdev %p tty %p", hdev, tty);
+
+ if (hu->tx_skb) {
+ kfree_skb(hu->tx_skb); hu->tx_skb = NULL;
+ }
+
+ /* Flush any pending characters in the driver and discipline. */
+ tty_ldisc_flush(tty);
+ tty_driver_flush_buffer(tty);
+
+ if (test_bit(HCI_UART_PROTO_SET, &hu->flags))
+ hu->proto->flush(hu);
+
+ return 0;
+}
+
+/* Close device */
+static int hci_uart_close(struct hci_dev *hdev)
+{
+ BT_DBG("hdev %p", hdev);
+
+ hci_uart_flush(hdev);
+ hdev->flush = NULL;
+ return 0;
+}
+
+/* Send frames from HCI layer */
+static int hci_uart_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct hci_uart *hu = hci_get_drvdata(hdev);
+
+ BT_DBG("%s: type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len);
+
+ hu->proto->enqueue(hu, skb);
+
+ hci_uart_tx_wakeup(hu);
+
+ return 0;
+}
+
+/* Flow control or un-flow control the device */
+void hci_uart_set_flow_control(struct hci_uart *hu, bool enable)
+{
+ struct tty_struct *tty = hu->tty;
+ struct ktermios ktermios;
+ int status;
+ unsigned int set = 0;
+ unsigned int clear = 0;
+
+ if (enable) {
+ /* Disable hardware flow control */
+ ktermios = tty->termios;
+ ktermios.c_cflag &= ~CRTSCTS;
+ status = tty_set_termios(tty, &ktermios);
+ BT_DBG("Disabling hardware flow control: %s",
+ status ? "failed" : "success");
+
+ /* Clear RTS to prevent the device from sending */
+ /* Most UARTs need OUT2 to enable interrupts */
+ status = tty->driver->ops->tiocmget(tty);
+ BT_DBG("Current tiocm 0x%x", status);
+
+ set &= ~(TIOCM_OUT2 | TIOCM_RTS);
+ clear = ~set;
+ set &= TIOCM_DTR | TIOCM_RTS | TIOCM_OUT1 |
+ TIOCM_OUT2 | TIOCM_LOOP;
+ clear &= TIOCM_DTR | TIOCM_RTS | TIOCM_OUT1 |
+ TIOCM_OUT2 | TIOCM_LOOP;
+ status = tty->driver->ops->tiocmset(tty, set, clear);
+ BT_DBG("Clearing RTS: %s", status ? "failed" : "success");
+ } else {
+ /* Set RTS to allow the device to send again */
+ status = tty->driver->ops->tiocmget(tty);
+ BT_DBG("Current tiocm 0x%x", status);
+
+ set |= (TIOCM_OUT2 | TIOCM_RTS);
+ clear = ~set;
+ set &= TIOCM_DTR | TIOCM_RTS | TIOCM_OUT1 |
+ TIOCM_OUT2 | TIOCM_LOOP;
+ clear &= TIOCM_DTR | TIOCM_RTS | TIOCM_OUT1 |
+ TIOCM_OUT2 | TIOCM_LOOP;
+ status = tty->driver->ops->tiocmset(tty, set, clear);
+ BT_DBG("Setting RTS: %s", status ? "failed" : "success");
+
+ /* Re-enable hardware flow control */
+ ktermios = tty->termios;
+ ktermios.c_cflag |= CRTSCTS;
+ status = tty_set_termios(tty, &ktermios);
+ BT_DBG("Enabling hardware flow control: %s",
+ status ? "failed" : "success");
+ }
+}
+
+void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed,
+ unsigned int oper_speed)
+{
+ hu->init_speed = init_speed;
+ hu->oper_speed = oper_speed;
+}
+
+void hci_uart_init_tty(struct hci_uart *hu)
+{
+ struct tty_struct *tty = hu->tty;
+ struct ktermios ktermios;
+
+ /* Bring the UART into a known 8 bits no parity hw fc state */
+ ktermios = tty->termios;
+ ktermios.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP |
+ INLCR | IGNCR | ICRNL | IXON);
+ ktermios.c_oflag &= ~OPOST;
+ ktermios.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
+ ktermios.c_cflag &= ~(CSIZE | PARENB);
+ ktermios.c_cflag |= CS8;
+ ktermios.c_cflag |= CRTSCTS;
+
+ /* tty_set_termios() return not checked as it is always 0 */
+ tty_set_termios(tty, &ktermios);
+}
+
+void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed)
+{
+ struct tty_struct *tty = hu->tty;
+ struct ktermios ktermios;
+
+ ktermios = tty->termios;
+ ktermios.c_cflag &= ~CBAUD;
+ tty_termios_encode_baud_rate(&ktermios, speed, speed);
+
+ /* tty_set_termios() return not checked as it is always 0 */
+ tty_set_termios(tty, &ktermios);
+
+ BT_DBG("%s: New tty speeds: %d/%d", hu->hdev->name,
+ tty->termios.c_ispeed, tty->termios.c_ospeed);
+}
+
+static int hci_uart_setup(struct hci_dev *hdev)
+{
+ struct hci_uart *hu = hci_get_drvdata(hdev);
+ struct hci_rp_read_local_version *ver;
+ struct sk_buff *skb;
+ unsigned int speed;
+ int err;
+
+ /* Init speed if any */
+ if (hu->init_speed)
+ speed = hu->init_speed;
+ else if (hu->proto->init_speed)
+ speed = hu->proto->init_speed;
+ else
+ speed = 0;
+
+ if (speed)
+ hci_uart_set_baudrate(hu, speed);
+
+ /* Operational speed if any */
+ if (hu->oper_speed)
+ speed = hu->oper_speed;
+ else if (hu->proto->oper_speed)
+ speed = hu->proto->oper_speed;
+ else
+ speed = 0;
+
+ if (hu->proto->set_baudrate && speed) {
+ err = hu->proto->set_baudrate(hu, speed);
+ if (!err)
+ hci_uart_set_baudrate(hu, speed);
+ }
+
+ if (hu->proto->setup)
+ return hu->proto->setup(hu);
+
+ if (!test_bit(HCI_UART_VND_DETECT, &hu->hdev_flags))
+ return 0;
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ BT_ERR("%s: Reading local version information failed (%ld)",
+ hdev->name, PTR_ERR(skb));
+ return 0;
+ }
+
+ if (skb->len != sizeof(*ver)) {
+ BT_ERR("%s: Event length mismatch for version information",
+ hdev->name);
+ goto done;
+ }
+
+ ver = (struct hci_rp_read_local_version *)skb->data;
+
+ switch (le16_to_cpu(ver->manufacturer)) {
+#ifdef CONFIG_BT_HCIUART_INTEL
+ case 2:
+ hdev->set_bdaddr = btintel_set_bdaddr;
+ btintel_check_bdaddr(hdev);
+ break;
+#endif
+#ifdef CONFIG_BT_HCIUART_BCM
+ case 15:
+ hdev->set_bdaddr = btbcm_set_bdaddr;
+ btbcm_check_bdaddr(hdev);
+ break;
+#endif
+ }
+
+done:
+ kfree_skb(skb);
+ return 0;
+}
+
+/* ------ LDISC part ------ */
+/* hci_uart_tty_open
+ *
+ * Called when line discipline changed to HCI_UART.
+ *
+ * Arguments:
+ * tty pointer to tty info structure
+ * Return Value:
+ * 0 if success, otherwise error code
+ */
+static int hci_uart_tty_open(struct tty_struct *tty)
+{
+ struct hci_uart *hu;
+
+ BT_DBG("tty %p", tty);
+
+ /* Error if the tty has no write op instead of leaving an exploitable
+ hole */
+ if (tty->ops->write == NULL)
+ return -EOPNOTSUPP;
+
+ hu = kzalloc(sizeof(struct hci_uart), GFP_KERNEL);
+ if (!hu) {
+ BT_ERR("Can't allocate control structure");
+ return -ENFILE;
+ }
+
+ tty->disc_data = hu;
+ hu->tty = tty;
+ tty->receive_room = 65536;
+
+ INIT_WORK(&hu->init_ready, hci_uart_init_work);
+ INIT_WORK(&hu->write_work, hci_uart_write_work);
+
+ /* Flush any pending characters in the driver and line discipline. */
+
+ /* FIXME: why is this needed. Note don't use ldisc_ref here as the
+ open path is before the ldisc is referencable */
+
+ if (tty->ldisc->ops->flush_buffer)
+ tty->ldisc->ops->flush_buffer(tty);
+ tty_driver_flush_buffer(tty);
+
+ return 0;
+}
+
+/* hci_uart_tty_close()
+ *
+ * Called when the line discipline is changed to something
+ * else, the tty is closed, or the tty detects a hangup.
+ */
+static void hci_uart_tty_close(struct tty_struct *tty)
+{
+ struct hci_uart *hu = tty->disc_data;
+ struct hci_dev *hdev;
+
+ BT_DBG("tty %p", tty);
+
+ /* Detach from the tty */
+ tty->disc_data = NULL;
+
+ if (!hu)
+ return;
+
+ hdev = hu->hdev;
+ if (hdev)
+ hci_uart_close(hdev);
+
+ cancel_work_sync(&hu->write_work);
+
+ if (test_and_clear_bit(HCI_UART_PROTO_SET, &hu->flags)) {
+ if (hdev) {
+ if (test_bit(HCI_UART_REGISTERED, &hu->flags))
+ hci_unregister_dev(hdev);
+ hci_free_dev(hdev);
+ }
+ hu->proto->close(hu);
+ }
+
+ kfree(hu);
+}
+
+/* hci_uart_tty_wakeup()
+ *
+ * Callback for transmit wakeup. Called when low level
+ * device driver can accept more send data.
+ *
+ * Arguments: tty pointer to associated tty instance data
+ * Return Value: None
+ */
+static void hci_uart_tty_wakeup(struct tty_struct *tty)
+{
+ struct hci_uart *hu = tty->disc_data;
+
+ BT_DBG("");
+
+ if (!hu)
+ return;
+
+ clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
+
+ if (tty != hu->tty)
+ return;
+
+ if (test_bit(HCI_UART_PROTO_SET, &hu->flags))
+ hci_uart_tx_wakeup(hu);
+}
+
+/* hci_uart_tty_receive()
+ *
+ * Called by tty low level driver when receive data is
+ * available.
+ *
+ * Arguments: tty pointer to tty isntance data
+ * data pointer to received data
+ * flags pointer to flags for data
+ * count count of received data in bytes
+ *
+ * Return Value: None
+ */
+static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data,
+ char *flags, int count)
+{
+ struct hci_uart *hu = tty->disc_data;
+
+ if (!hu || tty != hu->tty)
+ return;
+
+ if (!test_bit(HCI_UART_PROTO_SET, &hu->flags))
+ return;
+
+ /* It does not need a lock here as it is already protected by a mutex in
+ * tty caller
+ */
+ hu->proto->recv(hu, data, count);
+
+ if (hu->hdev)
+ hu->hdev->stat.byte_rx += count;
+
+ tty_unthrottle(tty);
+}
+
+static int hci_uart_register_dev(struct hci_uart *hu)
+{
+ struct hci_dev *hdev;
+
+ BT_DBG("");
+
+ /* Initialize and register HCI device */
+ hdev = hci_alloc_dev();
+ if (!hdev) {
+ BT_ERR("Can't allocate HCI device");
+ return -ENOMEM;
+ }
+
+ hu->hdev = hdev;
+
+ hdev->bus = HCI_UART;
+ hci_set_drvdata(hdev, hu);
+
+ /* Only when vendor specific setup callback is provided, consider
+ * the manufacturer information valid. This avoids filling in the
+ * value for Ericsson when nothing is specified.
+ */
+ if (hu->proto->setup)
+ hdev->manufacturer = hu->proto->manufacturer;
+
+ hdev->open = hci_uart_open;
+ hdev->close = hci_uart_close;
+ hdev->flush = hci_uart_flush;
+ hdev->send = hci_uart_send_frame;
+ hdev->setup = hci_uart_setup;
+ SET_HCIDEV_DEV(hdev, hu->tty->dev);
+
+ if (test_bit(HCI_UART_RAW_DEVICE, &hu->hdev_flags))
+ set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
+
+ if (test_bit(HCI_UART_EXT_CONFIG, &hu->hdev_flags))
+ set_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks);
+
+ if (!test_bit(HCI_UART_RESET_ON_INIT, &hu->hdev_flags))
+ set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
+
+ if (test_bit(HCI_UART_CREATE_AMP, &hu->hdev_flags))
+ hdev->dev_type = HCI_AMP;
+ else
+ hdev->dev_type = HCI_BREDR;
+
+ if (test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags))
+ return 0;
+
+ if (hci_register_dev(hdev) < 0) {
+ BT_ERR("Can't register HCI device");
+ hci_free_dev(hdev);
+ return -ENODEV;
+ }
+
+ set_bit(HCI_UART_REGISTERED, &hu->flags);
+
+ return 0;
+}
+
+static int hci_uart_set_proto(struct hci_uart *hu, int id)
+{
+ const struct hci_uart_proto *p;
+ int err;
+
+ p = hci_uart_get_proto(id);
+ if (!p)
+ return -EPROTONOSUPPORT;
+
+ err = p->open(hu);
+ if (err)
+ return err;
+
+ hu->proto = p;
+
+ err = hci_uart_register_dev(hu);
+ if (err) {
+ p->close(hu);
+ return err;
+ }
+
+ return 0;
+}
+
+static int hci_uart_set_flags(struct hci_uart *hu, unsigned long flags)
+{
+ unsigned long valid_flags = BIT(HCI_UART_RAW_DEVICE) |
+ BIT(HCI_UART_RESET_ON_INIT) |
+ BIT(HCI_UART_CREATE_AMP) |
+ BIT(HCI_UART_INIT_PENDING) |
+ BIT(HCI_UART_EXT_CONFIG) |
+ BIT(HCI_UART_VND_DETECT);
+
+ if (flags & ~valid_flags)
+ return -EINVAL;
+
+ hu->hdev_flags = flags;
+
+ return 0;
+}
+
+/* hci_uart_tty_ioctl()
+ *
+ * Process IOCTL system call for the tty device.
+ *
+ * Arguments:
+ *
+ * tty pointer to tty instance data
+ * file pointer to open file object for device
+ * cmd IOCTL command code
+ * arg argument for IOCTL call (cmd dependent)
+ *
+ * Return Value: Command dependent
+ */
+static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct hci_uart *hu = tty->disc_data;
+ int err = 0;
+
+ BT_DBG("");
+
+ /* Verify the status of the device */
+ if (!hu)
+ return -EBADF;
+
+ switch (cmd) {
+ case HCIUARTSETPROTO:
+ if (!test_and_set_bit(HCI_UART_PROTO_SET, &hu->flags)) {
+ err = hci_uart_set_proto(hu, arg);
+ if (err) {
+ clear_bit(HCI_UART_PROTO_SET, &hu->flags);
+ return err;
+ }
+ } else
+ return -EBUSY;
+ break;
+
+ case HCIUARTGETPROTO:
+ if (test_bit(HCI_UART_PROTO_SET, &hu->flags))
+ return hu->proto->id;
+ return -EUNATCH;
+
+ case HCIUARTGETDEVICE:
+ if (test_bit(HCI_UART_REGISTERED, &hu->flags))
+ return hu->hdev->id;
+ return -EUNATCH;
+
+ case HCIUARTSETFLAGS:
+ if (test_bit(HCI_UART_PROTO_SET, &hu->flags))
+ return -EBUSY;
+ err = hci_uart_set_flags(hu, arg);
+ if (err)
+ return err;
+ break;
+
+ case HCIUARTGETFLAGS:
+ return hu->hdev_flags;
+
+ default:
+ err = n_tty_ioctl_helper(tty, file, cmd, arg);
+ break;
+ }
+
+ return err;
+}
+
+/*
+ * We don't provide read/write/poll interface for user space.
+ */
+static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file,
+ unsigned char __user *buf, size_t nr)
+{
+ return 0;
+}
+
+static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file,
+ const unsigned char *data, size_t count)
+{
+ return 0;
+}
+
+static unsigned int hci_uart_tty_poll(struct tty_struct *tty,
+ struct file *filp, poll_table *wait)
+{
+ return 0;
+}
+
+static int __init hci_uart_init(void)
+{
+ static struct tty_ldisc_ops hci_uart_ldisc;
+ int err;
+
+ BT_INFO("HCI UART driver ver %s", VERSION);
+
+ /* Register the tty discipline */
+
+ memset(&hci_uart_ldisc, 0, sizeof(hci_uart_ldisc));
+ hci_uart_ldisc.magic = TTY_LDISC_MAGIC;
+ hci_uart_ldisc.name = "n_hci";
+ hci_uart_ldisc.open = hci_uart_tty_open;
+ hci_uart_ldisc.close = hci_uart_tty_close;
+ hci_uart_ldisc.read = hci_uart_tty_read;
+ hci_uart_ldisc.write = hci_uart_tty_write;
+ hci_uart_ldisc.ioctl = hci_uart_tty_ioctl;
+ hci_uart_ldisc.poll = hci_uart_tty_poll;
+ hci_uart_ldisc.receive_buf = hci_uart_tty_receive;
+ hci_uart_ldisc.write_wakeup = hci_uart_tty_wakeup;
+ hci_uart_ldisc.owner = THIS_MODULE;
+
+ err = tty_register_ldisc(N_HCI, &hci_uart_ldisc);
+ if (err) {
+ BT_ERR("HCI line discipline registration failed. (%d)", err);
+ return err;
+ }
+
+#ifdef CONFIG_BT_HCIUART_H4
+ h4_init();
+#endif
+#ifdef CONFIG_BT_HCIUART_BCSP
+ bcsp_init();
+#endif
+#ifdef CONFIG_BT_HCIUART_LL
+ ll_init();
+#endif
+#ifdef CONFIG_BT_HCIUART_ATH3K
+ ath_init();
+#endif
+#ifdef CONFIG_BT_HCIUART_3WIRE
+ h5_init();
+#endif
+#ifdef CONFIG_BT_HCIUART_INTEL
+ intel_init();
+#endif
+#ifdef CONFIG_BT_HCIUART_BCM
+ bcm_init();
+#endif
+#ifdef CONFIG_BT_HCIUART_QCA
+ qca_init();
+#endif
+
+ return 0;
+}
+
+static void __exit hci_uart_exit(void)
+{
+ int err;
+
+#ifdef CONFIG_BT_HCIUART_H4
+ h4_deinit();
+#endif
+#ifdef CONFIG_BT_HCIUART_BCSP
+ bcsp_deinit();
+#endif
+#ifdef CONFIG_BT_HCIUART_LL
+ ll_deinit();
+#endif
+#ifdef CONFIG_BT_HCIUART_ATH3K
+ ath_deinit();
+#endif
+#ifdef CONFIG_BT_HCIUART_3WIRE
+ h5_deinit();
+#endif
+#ifdef CONFIG_BT_HCIUART_INTEL
+ intel_deinit();
+#endif
+#ifdef CONFIG_BT_HCIUART_BCM
+ bcm_deinit();
+#endif
+#ifdef CONFIG_BT_HCIUART_QCA
+ qca_deinit();
+#endif
+
+ /* Release tty registration of line discipline */
+ err = tty_unregister_ldisc(N_HCI);
+ if (err)
+ BT_ERR("Can't unregister HCI line discipline (%d)", err);
+}
+
+module_init(hci_uart_init);
+module_exit(hci_uart_exit);
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Bluetooth HCI UART driver ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_LDISC(N_HCI);
diff --git a/drivers/bluetooth/hci_ll.c b/drivers/bluetooth/hci_ll.c
new file mode 100644
index 0000000..9ee24b0
--- /dev/null
+++ b/drivers/bluetooth/hci_ll.c
@@ -0,0 +1,527 @@
+/*
+ * Texas Instruments' Bluetooth HCILL UART protocol
+ *
+ * HCILL (HCI Low Level) is a Texas Instruments' power management
+ * protocol extension to H4.
+ *
+ * Copyright (C) 2007 Texas Instruments, Inc.
+ *
+ * Written by Ohad Ben-Cohen <ohad@bencohen.org>
+ *
+ * Acknowledgements:
+ * This file is based on hci_h4.c, which was written
+ * by Maxim Krasnyansky and Marcel Holtmann.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/poll.h>
+
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/signal.h>
+#include <linux/ioctl.h>
+#include <linux/skbuff.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "hci_uart.h"
+
+/* HCILL commands */
+#define HCILL_GO_TO_SLEEP_IND 0x30
+#define HCILL_GO_TO_SLEEP_ACK 0x31
+#define HCILL_WAKE_UP_IND 0x32
+#define HCILL_WAKE_UP_ACK 0x33
+
+/* HCILL receiver States */
+#define HCILL_W4_PACKET_TYPE 0
+#define HCILL_W4_EVENT_HDR 1
+#define HCILL_W4_ACL_HDR 2
+#define HCILL_W4_SCO_HDR 3
+#define HCILL_W4_DATA 4
+
+/* HCILL states */
+enum hcill_states_e {
+ HCILL_ASLEEP,
+ HCILL_ASLEEP_TO_AWAKE,
+ HCILL_AWAKE,
+ HCILL_AWAKE_TO_ASLEEP
+};
+
+struct hcill_cmd {
+ u8 cmd;
+} __packed;
+
+struct ll_struct {
+ unsigned long rx_state;
+ unsigned long rx_count;
+ struct sk_buff *rx_skb;
+ struct sk_buff_head txq;
+ spinlock_t hcill_lock; /* HCILL state lock */
+ unsigned long hcill_state; /* HCILL power state */
+ struct sk_buff_head tx_wait_q; /* HCILL wait queue */
+};
+
+/*
+ * Builds and sends an HCILL command packet.
+ * These are very simple packets with only 1 cmd byte
+ */
+static int send_hcill_cmd(u8 cmd, struct hci_uart *hu)
+{
+ int err = 0;
+ struct sk_buff *skb = NULL;
+ struct ll_struct *ll = hu->priv;
+ struct hcill_cmd *hcill_packet;
+
+ BT_DBG("hu %p cmd 0x%x", hu, cmd);
+
+ /* allocate packet */
+ skb = bt_skb_alloc(1, GFP_ATOMIC);
+ if (!skb) {
+ BT_ERR("cannot allocate memory for HCILL packet");
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /* prepare packet */
+ hcill_packet = (struct hcill_cmd *) skb_put(skb, 1);
+ hcill_packet->cmd = cmd;
+
+ /* send packet */
+ skb_queue_tail(&ll->txq, skb);
+out:
+ return err;
+}
+
+/* Initialize protocol */
+static int ll_open(struct hci_uart *hu)
+{
+ struct ll_struct *ll;
+
+ BT_DBG("hu %p", hu);
+
+ ll = kzalloc(sizeof(*ll), GFP_KERNEL);
+ if (!ll)
+ return -ENOMEM;
+
+ skb_queue_head_init(&ll->txq);
+ skb_queue_head_init(&ll->tx_wait_q);
+ spin_lock_init(&ll->hcill_lock);
+
+ ll->hcill_state = HCILL_AWAKE;
+
+ hu->priv = ll;
+
+ return 0;
+}
+
+/* Flush protocol data */
+static int ll_flush(struct hci_uart *hu)
+{
+ struct ll_struct *ll = hu->priv;
+
+ BT_DBG("hu %p", hu);
+
+ skb_queue_purge(&ll->tx_wait_q);
+ skb_queue_purge(&ll->txq);
+
+ return 0;
+}
+
+/* Close protocol */
+static int ll_close(struct hci_uart *hu)
+{
+ struct ll_struct *ll = hu->priv;
+
+ BT_DBG("hu %p", hu);
+
+ skb_queue_purge(&ll->tx_wait_q);
+ skb_queue_purge(&ll->txq);
+
+ kfree_skb(ll->rx_skb);
+
+ hu->priv = NULL;
+
+ kfree(ll);
+
+ return 0;
+}
+
+/*
+ * internal function, which does common work of the device wake up process:
+ * 1. places all pending packets (waiting in tx_wait_q list) in txq list.
+ * 2. changes internal state to HCILL_AWAKE.
+ * Note: assumes that hcill_lock spinlock is taken,
+ * shouldn't be called otherwise!
+ */
+static void __ll_do_awake(struct ll_struct *ll)
+{
+ struct sk_buff *skb = NULL;
+
+ while ((skb = skb_dequeue(&ll->tx_wait_q)))
+ skb_queue_tail(&ll->txq, skb);
+
+ ll->hcill_state = HCILL_AWAKE;
+}
+
+/*
+ * Called upon a wake-up-indication from the device
+ */
+static void ll_device_want_to_wakeup(struct hci_uart *hu)
+{
+ unsigned long flags;
+ struct ll_struct *ll = hu->priv;
+
+ BT_DBG("hu %p", hu);
+
+ /* lock hcill state */
+ spin_lock_irqsave(&ll->hcill_lock, flags);
+
+ switch (ll->hcill_state) {
+ case HCILL_ASLEEP_TO_AWAKE:
+ /*
+ * This state means that both the host and the BRF chip
+ * have simultaneously sent a wake-up-indication packet.
+ * Traditionally, in this case, receiving a wake-up-indication
+ * was enough and an additional wake-up-ack wasn't needed.
+ * This has changed with the BRF6350, which does require an
+ * explicit wake-up-ack. Other BRF versions, which do not
+ * require an explicit ack here, do accept it, thus it is
+ * perfectly safe to always send one.
+ */
+ BT_DBG("dual wake-up-indication");
+ /* deliberate fall-through - do not add break */
+ case HCILL_ASLEEP:
+ /* acknowledge device wake up */
+ if (send_hcill_cmd(HCILL_WAKE_UP_ACK, hu) < 0) {
+ BT_ERR("cannot acknowledge device wake up");
+ goto out;
+ }
+ break;
+ default:
+ /* any other state is illegal */
+ BT_ERR("received HCILL_WAKE_UP_IND in state %ld", ll->hcill_state);
+ break;
+ }
+
+ /* send pending packets and change state to HCILL_AWAKE */
+ __ll_do_awake(ll);
+
+out:
+ spin_unlock_irqrestore(&ll->hcill_lock, flags);
+
+ /* actually send the packets */
+ hci_uart_tx_wakeup(hu);
+}
+
+/*
+ * Called upon a sleep-indication from the device
+ */
+static void ll_device_want_to_sleep(struct hci_uart *hu)
+{
+ unsigned long flags;
+ struct ll_struct *ll = hu->priv;
+
+ BT_DBG("hu %p", hu);
+
+ /* lock hcill state */
+ spin_lock_irqsave(&ll->hcill_lock, flags);
+
+ /* sanity check */
+ if (ll->hcill_state != HCILL_AWAKE)
+ BT_ERR("ERR: HCILL_GO_TO_SLEEP_IND in state %ld", ll->hcill_state);
+
+ /* acknowledge device sleep */
+ if (send_hcill_cmd(HCILL_GO_TO_SLEEP_ACK, hu) < 0) {
+ BT_ERR("cannot acknowledge device sleep");
+ goto out;
+ }
+
+ /* update state */
+ ll->hcill_state = HCILL_ASLEEP;
+
+out:
+ spin_unlock_irqrestore(&ll->hcill_lock, flags);
+
+ /* actually send the sleep ack packet */
+ hci_uart_tx_wakeup(hu);
+}
+
+/*
+ * Called upon wake-up-acknowledgement from the device
+ */
+static void ll_device_woke_up(struct hci_uart *hu)
+{
+ unsigned long flags;
+ struct ll_struct *ll = hu->priv;
+
+ BT_DBG("hu %p", hu);
+
+ /* lock hcill state */
+ spin_lock_irqsave(&ll->hcill_lock, flags);
+
+ /* sanity check */
+ if (ll->hcill_state != HCILL_ASLEEP_TO_AWAKE)
+ BT_ERR("received HCILL_WAKE_UP_ACK in state %ld", ll->hcill_state);
+
+ /* send pending packets and change state to HCILL_AWAKE */
+ __ll_do_awake(ll);
+
+ spin_unlock_irqrestore(&ll->hcill_lock, flags);
+
+ /* actually send the packets */
+ hci_uart_tx_wakeup(hu);
+}
+
+/* Enqueue frame for transmittion (padding, crc, etc) */
+/* may be called from two simultaneous tasklets */
+static int ll_enqueue(struct hci_uart *hu, struct sk_buff *skb)
+{
+ unsigned long flags = 0;
+ struct ll_struct *ll = hu->priv;
+
+ BT_DBG("hu %p skb %p", hu, skb);
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+
+ /* lock hcill state */
+ spin_lock_irqsave(&ll->hcill_lock, flags);
+
+ /* act according to current state */
+ switch (ll->hcill_state) {
+ case HCILL_AWAKE:
+ BT_DBG("device awake, sending normally");
+ skb_queue_tail(&ll->txq, skb);
+ break;
+ case HCILL_ASLEEP:
+ BT_DBG("device asleep, waking up and queueing packet");
+ /* save packet for later */
+ skb_queue_tail(&ll->tx_wait_q, skb);
+ /* awake device */
+ if (send_hcill_cmd(HCILL_WAKE_UP_IND, hu) < 0) {
+ BT_ERR("cannot wake up device");
+ break;
+ }
+ ll->hcill_state = HCILL_ASLEEP_TO_AWAKE;
+ break;
+ case HCILL_ASLEEP_TO_AWAKE:
+ BT_DBG("device waking up, queueing packet");
+ /* transient state; just keep packet for later */
+ skb_queue_tail(&ll->tx_wait_q, skb);
+ break;
+ default:
+ BT_ERR("illegal hcill state: %ld (losing packet)", ll->hcill_state);
+ kfree_skb(skb);
+ break;
+ }
+
+ spin_unlock_irqrestore(&ll->hcill_lock, flags);
+
+ return 0;
+}
+
+static inline int ll_check_data_len(struct hci_dev *hdev, struct ll_struct *ll, int len)
+{
+ int room = skb_tailroom(ll->rx_skb);
+
+ BT_DBG("len %d room %d", len, room);
+
+ if (!len) {
+ hci_recv_frame(hdev, ll->rx_skb);
+ } else if (len > room) {
+ BT_ERR("Data length is too large");
+ kfree_skb(ll->rx_skb);
+ } else {
+ ll->rx_state = HCILL_W4_DATA;
+ ll->rx_count = len;
+ return len;
+ }
+
+ ll->rx_state = HCILL_W4_PACKET_TYPE;
+ ll->rx_skb = NULL;
+ ll->rx_count = 0;
+
+ return 0;
+}
+
+/* Recv data */
+static int ll_recv(struct hci_uart *hu, const void *data, int count)
+{
+ struct ll_struct *ll = hu->priv;
+ const char *ptr;
+ struct hci_event_hdr *eh;
+ struct hci_acl_hdr *ah;
+ struct hci_sco_hdr *sh;
+ int len, type, dlen;
+
+ BT_DBG("hu %p count %d rx_state %ld rx_count %ld", hu, count, ll->rx_state, ll->rx_count);
+
+ ptr = data;
+ while (count) {
+ if (ll->rx_count) {
+ len = min_t(unsigned int, ll->rx_count, count);
+ memcpy(skb_put(ll->rx_skb, len), ptr, len);
+ ll->rx_count -= len; count -= len; ptr += len;
+
+ if (ll->rx_count)
+ continue;
+
+ switch (ll->rx_state) {
+ case HCILL_W4_DATA:
+ BT_DBG("Complete data");
+ hci_recv_frame(hu->hdev, ll->rx_skb);
+
+ ll->rx_state = HCILL_W4_PACKET_TYPE;
+ ll->rx_skb = NULL;
+ continue;
+
+ case HCILL_W4_EVENT_HDR:
+ eh = hci_event_hdr(ll->rx_skb);
+
+ BT_DBG("Event header: evt 0x%2.2x plen %d", eh->evt, eh->plen);
+
+ ll_check_data_len(hu->hdev, ll, eh->plen);
+ continue;
+
+ case HCILL_W4_ACL_HDR:
+ ah = hci_acl_hdr(ll->rx_skb);
+ dlen = __le16_to_cpu(ah->dlen);
+
+ BT_DBG("ACL header: dlen %d", dlen);
+
+ ll_check_data_len(hu->hdev, ll, dlen);
+ continue;
+
+ case HCILL_W4_SCO_HDR:
+ sh = hci_sco_hdr(ll->rx_skb);
+
+ BT_DBG("SCO header: dlen %d", sh->dlen);
+
+ ll_check_data_len(hu->hdev, ll, sh->dlen);
+ continue;
+ }
+ }
+
+ /* HCILL_W4_PACKET_TYPE */
+ switch (*ptr) {
+ case HCI_EVENT_PKT:
+ BT_DBG("Event packet");
+ ll->rx_state = HCILL_W4_EVENT_HDR;
+ ll->rx_count = HCI_EVENT_HDR_SIZE;
+ type = HCI_EVENT_PKT;
+ break;
+
+ case HCI_ACLDATA_PKT:
+ BT_DBG("ACL packet");
+ ll->rx_state = HCILL_W4_ACL_HDR;
+ ll->rx_count = HCI_ACL_HDR_SIZE;
+ type = HCI_ACLDATA_PKT;
+ break;
+
+ case HCI_SCODATA_PKT:
+ BT_DBG("SCO packet");
+ ll->rx_state = HCILL_W4_SCO_HDR;
+ ll->rx_count = HCI_SCO_HDR_SIZE;
+ type = HCI_SCODATA_PKT;
+ break;
+
+ /* HCILL signals */
+ case HCILL_GO_TO_SLEEP_IND:
+ BT_DBG("HCILL_GO_TO_SLEEP_IND packet");
+ ll_device_want_to_sleep(hu);
+ ptr++; count--;
+ continue;
+
+ case HCILL_GO_TO_SLEEP_ACK:
+ /* shouldn't happen */
+ BT_ERR("received HCILL_GO_TO_SLEEP_ACK (in state %ld)", ll->hcill_state);
+ ptr++; count--;
+ continue;
+
+ case HCILL_WAKE_UP_IND:
+ BT_DBG("HCILL_WAKE_UP_IND packet");
+ ll_device_want_to_wakeup(hu);
+ ptr++; count--;
+ continue;
+
+ case HCILL_WAKE_UP_ACK:
+ BT_DBG("HCILL_WAKE_UP_ACK packet");
+ ll_device_woke_up(hu);
+ ptr++; count--;
+ continue;
+
+ default:
+ BT_ERR("Unknown HCI packet type %2.2x", (__u8)*ptr);
+ hu->hdev->stat.err_rx++;
+ ptr++; count--;
+ continue;
+ }
+
+ ptr++; count--;
+
+ /* Allocate packet */
+ ll->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
+ if (!ll->rx_skb) {
+ BT_ERR("Can't allocate mem for new packet");
+ ll->rx_state = HCILL_W4_PACKET_TYPE;
+ ll->rx_count = 0;
+ return -ENOMEM;
+ }
+
+ bt_cb(ll->rx_skb)->pkt_type = type;
+ }
+
+ return count;
+}
+
+static struct sk_buff *ll_dequeue(struct hci_uart *hu)
+{
+ struct ll_struct *ll = hu->priv;
+ return skb_dequeue(&ll->txq);
+}
+
+static const struct hci_uart_proto llp = {
+ .id = HCI_UART_LL,
+ .name = "LL",
+ .open = ll_open,
+ .close = ll_close,
+ .recv = ll_recv,
+ .enqueue = ll_enqueue,
+ .dequeue = ll_dequeue,
+ .flush = ll_flush,
+};
+
+int __init ll_init(void)
+{
+ return hci_uart_register_proto(&llp);
+}
+
+int __exit ll_deinit(void)
+{
+ return hci_uart_unregister_proto(&llp);
+}
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
new file mode 100644
index 0000000..71325e4
--- /dev/null
+++ b/drivers/bluetooth/hci_qca.c
@@ -0,0 +1,970 @@
+/*
+ * Bluetooth Software UART Qualcomm protocol
+ *
+ * HCI_IBS (HCI In-Band Sleep) is Qualcomm's power management
+ * protocol extension to H4.
+ *
+ * Copyright (C) 2007 Texas Instruments, Inc.
+ * Copyright (c) 2010, 2012 The Linux Foundation. All rights reserved.
+ *
+ * Acknowledgements:
+ * This file is based on hci_ll.c, which was...
+ * Written by Ohad Ben-Cohen <ohad@bencohen.org>
+ * which was in turn based on hci_h4.c, which was written
+ * by Maxim Krasnyansky and Marcel Holtmann.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/debugfs.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "hci_uart.h"
+#include "btqca.h"
+
+/* HCI_IBS protocol messages */
+#define HCI_IBS_SLEEP_IND 0xFE
+#define HCI_IBS_WAKE_IND 0xFD
+#define HCI_IBS_WAKE_ACK 0xFC
+#define HCI_MAX_IBS_SIZE 10
+
+/* Controller states */
+#define STATE_IN_BAND_SLEEP_ENABLED 1
+
+#define IBS_WAKE_RETRANS_TIMEOUT_MS 100
+#define IBS_TX_IDLE_TIMEOUT_MS 2000
+#define BAUDRATE_SETTLE_TIMEOUT_MS 300
+
+/* HCI_IBS transmit side sleep protocol states */
+enum tx_ibs_states {
+ HCI_IBS_TX_ASLEEP,
+ HCI_IBS_TX_WAKING,
+ HCI_IBS_TX_AWAKE,
+};
+
+/* HCI_IBS receive side sleep protocol states */
+enum rx_states {
+ HCI_IBS_RX_ASLEEP,
+ HCI_IBS_RX_AWAKE,
+};
+
+/* HCI_IBS transmit and receive side clock state vote */
+enum hci_ibs_clock_state_vote {
+ HCI_IBS_VOTE_STATS_UPDATE,
+ HCI_IBS_TX_VOTE_CLOCK_ON,
+ HCI_IBS_TX_VOTE_CLOCK_OFF,
+ HCI_IBS_RX_VOTE_CLOCK_ON,
+ HCI_IBS_RX_VOTE_CLOCK_OFF,
+};
+
+struct qca_data {
+ struct hci_uart *hu;
+ struct sk_buff *rx_skb;
+ struct sk_buff_head txq;
+ struct sk_buff_head tx_wait_q; /* HCI_IBS wait queue */
+ spinlock_t hci_ibs_lock; /* HCI_IBS state lock */
+ u8 tx_ibs_state; /* HCI_IBS transmit side power state*/
+ u8 rx_ibs_state; /* HCI_IBS receive side power state */
+ bool tx_vote; /* Clock must be on for TX */
+ bool rx_vote; /* Clock must be on for RX */
+ struct timer_list tx_idle_timer;
+ u32 tx_idle_delay;
+ struct timer_list wake_retrans_timer;
+ u32 wake_retrans;
+ struct workqueue_struct *workqueue;
+ struct work_struct ws_awake_rx;
+ struct work_struct ws_awake_device;
+ struct work_struct ws_rx_vote_off;
+ struct work_struct ws_tx_vote_off;
+ unsigned long flags;
+
+ /* For debugging purpose */
+ u64 ibs_sent_wacks;
+ u64 ibs_sent_slps;
+ u64 ibs_sent_wakes;
+ u64 ibs_recv_wacks;
+ u64 ibs_recv_slps;
+ u64 ibs_recv_wakes;
+ u64 vote_last_jif;
+ u32 vote_on_ms;
+ u32 vote_off_ms;
+ u64 tx_votes_on;
+ u64 rx_votes_on;
+ u64 tx_votes_off;
+ u64 rx_votes_off;
+ u64 votes_on;
+ u64 votes_off;
+};
+
+static void __serial_clock_on(struct tty_struct *tty)
+{
+ /* TODO: Some chipset requires to enable UART clock on client
+ * side to save power consumption or manual work is required.
+ * Please put your code to control UART clock here if needed
+ */
+}
+
+static void __serial_clock_off(struct tty_struct *tty)
+{
+ /* TODO: Some chipset requires to disable UART clock on client
+ * side to save power consumption or manual work is required.
+ * Please put your code to control UART clock off here if needed
+ */
+}
+
+/* serial_clock_vote needs to be called with the ibs lock held */
+static void serial_clock_vote(unsigned long vote, struct hci_uart *hu)
+{
+ struct qca_data *qca = hu->priv;
+ unsigned int diff;
+
+ bool old_vote = (qca->tx_vote | qca->rx_vote);
+ bool new_vote;
+
+ switch (vote) {
+ case HCI_IBS_VOTE_STATS_UPDATE:
+ diff = jiffies_to_msecs(jiffies - qca->vote_last_jif);
+
+ if (old_vote)
+ qca->vote_off_ms += diff;
+ else
+ qca->vote_on_ms += diff;
+ return;
+
+ case HCI_IBS_TX_VOTE_CLOCK_ON:
+ qca->tx_vote = true;
+ qca->tx_votes_on++;
+ new_vote = true;
+ break;
+
+ case HCI_IBS_RX_VOTE_CLOCK_ON:
+ qca->rx_vote = true;
+ qca->rx_votes_on++;
+ new_vote = true;
+ break;
+
+ case HCI_IBS_TX_VOTE_CLOCK_OFF:
+ qca->tx_vote = false;
+ qca->tx_votes_off++;
+ new_vote = qca->rx_vote | qca->tx_vote;
+ break;
+
+ case HCI_IBS_RX_VOTE_CLOCK_OFF:
+ qca->rx_vote = false;
+ qca->rx_votes_off++;
+ new_vote = qca->rx_vote | qca->tx_vote;
+ break;
+
+ default:
+ BT_ERR("Voting irregularity");
+ return;
+ }
+
+ if (new_vote != old_vote) {
+ if (new_vote)
+ __serial_clock_on(hu->tty);
+ else
+ __serial_clock_off(hu->tty);
+
+ BT_DBG("Vote serial clock %s(%s)", new_vote ? "true" : "false",
+ vote ? "true" : "false");
+
+ diff = jiffies_to_msecs(jiffies - qca->vote_last_jif);
+
+ if (new_vote) {
+ qca->votes_on++;
+ qca->vote_off_ms += diff;
+ } else {
+ qca->votes_off++;
+ qca->vote_on_ms += diff;
+ }
+ qca->vote_last_jif = jiffies;
+ }
+}
+
+/* Builds and sends an HCI_IBS command packet.
+ * These are very simple packets with only 1 cmd byte.
+ */
+static int send_hci_ibs_cmd(u8 cmd, struct hci_uart *hu)
+{
+ int err = 0;
+ struct sk_buff *skb = NULL;
+ struct qca_data *qca = hu->priv;
+
+ BT_DBG("hu %p send hci ibs cmd 0x%x", hu, cmd);
+
+ skb = bt_skb_alloc(1, GFP_ATOMIC);
+ if (!skb) {
+ BT_ERR("Failed to allocate memory for HCI_IBS packet");
+ return -ENOMEM;
+ }
+
+ /* Assign HCI_IBS type */
+ *skb_put(skb, 1) = cmd;
+
+ skb_queue_tail(&qca->txq, skb);
+
+ return err;
+}
+
+static void qca_wq_awake_device(struct work_struct *work)
+{
+ struct qca_data *qca = container_of(work, struct qca_data,
+ ws_awake_device);
+ struct hci_uart *hu = qca->hu;
+ unsigned long retrans_delay;
+
+ BT_DBG("hu %p wq awake device", hu);
+
+ /* Vote for serial clock */
+ serial_clock_vote(HCI_IBS_TX_VOTE_CLOCK_ON, hu);
+
+ spin_lock(&qca->hci_ibs_lock);
+
+ /* Send wake indication to device */
+ if (send_hci_ibs_cmd(HCI_IBS_WAKE_IND, hu) < 0)
+ BT_ERR("Failed to send WAKE to device");
+
+ qca->ibs_sent_wakes++;
+
+ /* Start retransmit timer */
+ retrans_delay = msecs_to_jiffies(qca->wake_retrans);
+ mod_timer(&qca->wake_retrans_timer, jiffies + retrans_delay);
+
+ spin_unlock(&qca->hci_ibs_lock);
+
+ /* Actually send the packets */
+ hci_uart_tx_wakeup(hu);
+}
+
+static void qca_wq_awake_rx(struct work_struct *work)
+{
+ struct qca_data *qca = container_of(work, struct qca_data,
+ ws_awake_rx);
+ struct hci_uart *hu = qca->hu;
+
+ BT_DBG("hu %p wq awake rx", hu);
+
+ serial_clock_vote(HCI_IBS_RX_VOTE_CLOCK_ON, hu);
+
+ spin_lock(&qca->hci_ibs_lock);
+ qca->rx_ibs_state = HCI_IBS_RX_AWAKE;
+
+ /* Always acknowledge device wake up,
+ * sending IBS message doesn't count as TX ON.
+ */
+ if (send_hci_ibs_cmd(HCI_IBS_WAKE_ACK, hu) < 0)
+ BT_ERR("Failed to acknowledge device wake up");
+
+ qca->ibs_sent_wacks++;
+
+ spin_unlock(&qca->hci_ibs_lock);
+
+ /* Actually send the packets */
+ hci_uart_tx_wakeup(hu);
+}
+
+static void qca_wq_serial_rx_clock_vote_off(struct work_struct *work)
+{
+ struct qca_data *qca = container_of(work, struct qca_data,
+ ws_rx_vote_off);
+ struct hci_uart *hu = qca->hu;
+
+ BT_DBG("hu %p rx clock vote off", hu);
+
+ serial_clock_vote(HCI_IBS_RX_VOTE_CLOCK_OFF, hu);
+}
+
+static void qca_wq_serial_tx_clock_vote_off(struct work_struct *work)
+{
+ struct qca_data *qca = container_of(work, struct qca_data,
+ ws_tx_vote_off);
+ struct hci_uart *hu = qca->hu;
+
+ BT_DBG("hu %p tx clock vote off", hu);
+
+ /* Run HCI tx handling unlocked */
+ hci_uart_tx_wakeup(hu);
+
+ /* Now that message queued to tty driver, vote for tty clocks off.
+ * It is up to the tty driver to pend the clocks off until tx done.
+ */
+ serial_clock_vote(HCI_IBS_TX_VOTE_CLOCK_OFF, hu);
+}
+
+static void hci_ibs_tx_idle_timeout(unsigned long arg)
+{
+ struct hci_uart *hu = (struct hci_uart *)arg;
+ struct qca_data *qca = hu->priv;
+ unsigned long flags;
+
+ BT_DBG("hu %p idle timeout in %d state", hu, qca->tx_ibs_state);
+
+ spin_lock_irqsave_nested(&qca->hci_ibs_lock,
+ flags, SINGLE_DEPTH_NESTING);
+
+ switch (qca->tx_ibs_state) {
+ case HCI_IBS_TX_AWAKE:
+ /* TX_IDLE, go to SLEEP */
+ if (send_hci_ibs_cmd(HCI_IBS_SLEEP_IND, hu) < 0) {
+ BT_ERR("Failed to send SLEEP to device");
+ break;
+ }
+ qca->tx_ibs_state = HCI_IBS_TX_ASLEEP;
+ qca->ibs_sent_slps++;
+ queue_work(qca->workqueue, &qca->ws_tx_vote_off);
+ break;
+
+ case HCI_IBS_TX_ASLEEP:
+ case HCI_IBS_TX_WAKING:
+ /* Fall through */
+
+ default:
+ BT_ERR("Spurrious timeout tx state %d", qca->tx_ibs_state);
+ break;
+ }
+
+ spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
+}
+
+static void hci_ibs_wake_retrans_timeout(unsigned long arg)
+{
+ struct hci_uart *hu = (struct hci_uart *)arg;
+ struct qca_data *qca = hu->priv;
+ unsigned long flags, retrans_delay;
+ bool retransmit = false;
+
+ BT_DBG("hu %p wake retransmit timeout in %d state",
+ hu, qca->tx_ibs_state);
+
+ spin_lock_irqsave_nested(&qca->hci_ibs_lock,
+ flags, SINGLE_DEPTH_NESTING);
+
+ switch (qca->tx_ibs_state) {
+ case HCI_IBS_TX_WAKING:
+ /* No WAKE_ACK, retransmit WAKE */
+ retransmit = true;
+ if (send_hci_ibs_cmd(HCI_IBS_WAKE_IND, hu) < 0) {
+ BT_ERR("Failed to acknowledge device wake up");
+ break;
+ }
+ qca->ibs_sent_wakes++;
+ retrans_delay = msecs_to_jiffies(qca->wake_retrans);
+ mod_timer(&qca->wake_retrans_timer, jiffies + retrans_delay);
+ break;
+
+ case HCI_IBS_TX_ASLEEP:
+ case HCI_IBS_TX_AWAKE:
+ /* Fall through */
+
+ default:
+ BT_ERR("Spurrious timeout tx state %d", qca->tx_ibs_state);
+ break;
+ }
+
+ spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
+
+ if (retransmit)
+ hci_uart_tx_wakeup(hu);
+}
+
+/* Initialize protocol */
+static int qca_open(struct hci_uart *hu)
+{
+ struct qca_data *qca;
+
+ BT_DBG("hu %p qca_open", hu);
+
+ qca = kzalloc(sizeof(struct qca_data), GFP_ATOMIC);
+ if (!qca)
+ return -ENOMEM;
+
+ skb_queue_head_init(&qca->txq);
+ skb_queue_head_init(&qca->tx_wait_q);
+ spin_lock_init(&qca->hci_ibs_lock);
+ qca->workqueue = create_singlethread_workqueue("qca_wq");
+ if (!qca->workqueue) {
+ BT_ERR("QCA Workqueue not initialized properly");
+ kfree(qca);
+ return -ENOMEM;
+ }
+
+ INIT_WORK(&qca->ws_awake_rx, qca_wq_awake_rx);
+ INIT_WORK(&qca->ws_awake_device, qca_wq_awake_device);
+ INIT_WORK(&qca->ws_rx_vote_off, qca_wq_serial_rx_clock_vote_off);
+ INIT_WORK(&qca->ws_tx_vote_off, qca_wq_serial_tx_clock_vote_off);
+
+ qca->hu = hu;
+
+ /* Assume we start with both sides asleep -- extra wakes OK */
+ qca->tx_ibs_state = HCI_IBS_TX_ASLEEP;
+ qca->rx_ibs_state = HCI_IBS_RX_ASLEEP;
+
+ /* clocks actually on, but we start votes off */
+ qca->tx_vote = false;
+ qca->rx_vote = false;
+ qca->flags = 0;
+
+ qca->ibs_sent_wacks = 0;
+ qca->ibs_sent_slps = 0;
+ qca->ibs_sent_wakes = 0;
+ qca->ibs_recv_wacks = 0;
+ qca->ibs_recv_slps = 0;
+ qca->ibs_recv_wakes = 0;
+ qca->vote_last_jif = jiffies;
+ qca->vote_on_ms = 0;
+ qca->vote_off_ms = 0;
+ qca->votes_on = 0;
+ qca->votes_off = 0;
+ qca->tx_votes_on = 0;
+ qca->tx_votes_off = 0;
+ qca->rx_votes_on = 0;
+ qca->rx_votes_off = 0;
+
+ hu->priv = qca;
+
+ init_timer(&qca->wake_retrans_timer);
+ qca->wake_retrans_timer.function = hci_ibs_wake_retrans_timeout;
+ qca->wake_retrans_timer.data = (u_long)hu;
+ qca->wake_retrans = IBS_WAKE_RETRANS_TIMEOUT_MS;
+
+ init_timer(&qca->tx_idle_timer);
+ qca->tx_idle_timer.function = hci_ibs_tx_idle_timeout;
+ qca->tx_idle_timer.data = (u_long)hu;
+ qca->tx_idle_delay = IBS_TX_IDLE_TIMEOUT_MS;
+
+ BT_DBG("HCI_UART_QCA open, tx_idle_delay=%u, wake_retrans=%u",
+ qca->tx_idle_delay, qca->wake_retrans);
+
+ return 0;
+}
+
+static void qca_debugfs_init(struct hci_dev *hdev)
+{
+ struct hci_uart *hu = hci_get_drvdata(hdev);
+ struct qca_data *qca = hu->priv;
+ struct dentry *ibs_dir;
+ umode_t mode;
+
+ if (!hdev->debugfs)
+ return;
+
+ ibs_dir = debugfs_create_dir("ibs", hdev->debugfs);
+
+ /* read only */
+ mode = S_IRUGO;
+ debugfs_create_u8("tx_ibs_state", mode, ibs_dir, &qca->tx_ibs_state);
+ debugfs_create_u8("rx_ibs_state", mode, ibs_dir, &qca->rx_ibs_state);
+ debugfs_create_u64("ibs_sent_sleeps", mode, ibs_dir,
+ &qca->ibs_sent_slps);
+ debugfs_create_u64("ibs_sent_wakes", mode, ibs_dir,
+ &qca->ibs_sent_wakes);
+ debugfs_create_u64("ibs_sent_wake_acks", mode, ibs_dir,
+ &qca->ibs_sent_wacks);
+ debugfs_create_u64("ibs_recv_sleeps", mode, ibs_dir,
+ &qca->ibs_recv_slps);
+ debugfs_create_u64("ibs_recv_wakes", mode, ibs_dir,
+ &qca->ibs_recv_wakes);
+ debugfs_create_u64("ibs_recv_wake_acks", mode, ibs_dir,
+ &qca->ibs_recv_wacks);
+ debugfs_create_bool("tx_vote", mode, ibs_dir, &qca->tx_vote);
+ debugfs_create_u64("tx_votes_on", mode, ibs_dir, &qca->tx_votes_on);
+ debugfs_create_u64("tx_votes_off", mode, ibs_dir, &qca->tx_votes_off);
+ debugfs_create_bool("rx_vote", mode, ibs_dir, &qca->rx_vote);
+ debugfs_create_u64("rx_votes_on", mode, ibs_dir, &qca->rx_votes_on);
+ debugfs_create_u64("rx_votes_off", mode, ibs_dir, &qca->rx_votes_off);
+ debugfs_create_u64("votes_on", mode, ibs_dir, &qca->votes_on);
+ debugfs_create_u64("votes_off", mode, ibs_dir, &qca->votes_off);
+ debugfs_create_u32("vote_on_ms", mode, ibs_dir, &qca->vote_on_ms);
+ debugfs_create_u32("vote_off_ms", mode, ibs_dir, &qca->vote_off_ms);
+
+ /* read/write */
+ mode = S_IRUGO | S_IWUSR;
+ debugfs_create_u32("wake_retrans", mode, ibs_dir, &qca->wake_retrans);
+ debugfs_create_u32("tx_idle_delay", mode, ibs_dir,
+ &qca->tx_idle_delay);
+}
+
+/* Flush protocol data */
+static int qca_flush(struct hci_uart *hu)
+{
+ struct qca_data *qca = hu->priv;
+
+ BT_DBG("hu %p qca flush", hu);
+
+ skb_queue_purge(&qca->tx_wait_q);
+ skb_queue_purge(&qca->txq);
+
+ return 0;
+}
+
+/* Close protocol */
+static int qca_close(struct hci_uart *hu)
+{
+ struct qca_data *qca = hu->priv;
+
+ BT_DBG("hu %p qca close", hu);
+
+ serial_clock_vote(HCI_IBS_VOTE_STATS_UPDATE, hu);
+
+ skb_queue_purge(&qca->tx_wait_q);
+ skb_queue_purge(&qca->txq);
+ del_timer(&qca->tx_idle_timer);
+ del_timer(&qca->wake_retrans_timer);
+ destroy_workqueue(qca->workqueue);
+ qca->hu = NULL;
+
+ kfree_skb(qca->rx_skb);
+
+ hu->priv = NULL;
+
+ kfree(qca);
+
+ return 0;
+}
+
+/* Called upon a wake-up-indication from the device.
+ */
+static void device_want_to_wakeup(struct hci_uart *hu)
+{
+ unsigned long flags;
+ struct qca_data *qca = hu->priv;
+
+ BT_DBG("hu %p want to wake up", hu);
+
+ spin_lock_irqsave(&qca->hci_ibs_lock, flags);
+
+ qca->ibs_recv_wakes++;
+
+ switch (qca->rx_ibs_state) {
+ case HCI_IBS_RX_ASLEEP:
+ /* Make sure clock is on - we may have turned clock off since
+ * receiving the wake up indicator awake rx clock.
+ */
+ queue_work(qca->workqueue, &qca->ws_awake_rx);
+ spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
+ return;
+
+ case HCI_IBS_RX_AWAKE:
+ /* Always acknowledge device wake up,
+ * sending IBS message doesn't count as TX ON.
+ */
+ if (send_hci_ibs_cmd(HCI_IBS_WAKE_ACK, hu) < 0) {
+ BT_ERR("Failed to acknowledge device wake up");
+ break;
+ }
+ qca->ibs_sent_wacks++;
+ break;
+
+ default:
+ /* Any other state is illegal */
+ BT_ERR("Received HCI_IBS_WAKE_IND in rx state %d",
+ qca->rx_ibs_state);
+ break;
+ }
+
+ spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
+
+ /* Actually send the packets */
+ hci_uart_tx_wakeup(hu);
+}
+
+/* Called upon a sleep-indication from the device.
+ */
+static void device_want_to_sleep(struct hci_uart *hu)
+{
+ unsigned long flags;
+ struct qca_data *qca = hu->priv;
+
+ BT_DBG("hu %p want to sleep", hu);
+
+ spin_lock_irqsave(&qca->hci_ibs_lock, flags);
+
+ qca->ibs_recv_slps++;
+
+ switch (qca->rx_ibs_state) {
+ case HCI_IBS_RX_AWAKE:
+ /* Update state */
+ qca->rx_ibs_state = HCI_IBS_RX_ASLEEP;
+ /* Vote off rx clock under workqueue */
+ queue_work(qca->workqueue, &qca->ws_rx_vote_off);
+ break;
+
+ case HCI_IBS_RX_ASLEEP:
+ /* Fall through */
+
+ default:
+ /* Any other state is illegal */
+ BT_ERR("Received HCI_IBS_SLEEP_IND in rx state %d",
+ qca->rx_ibs_state);
+ break;
+ }
+
+ spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
+}
+
+/* Called upon wake-up-acknowledgement from the device
+ */
+static void device_woke_up(struct hci_uart *hu)
+{
+ unsigned long flags, idle_delay;
+ struct qca_data *qca = hu->priv;
+ struct sk_buff *skb = NULL;
+
+ BT_DBG("hu %p woke up", hu);
+
+ spin_lock_irqsave(&qca->hci_ibs_lock, flags);
+
+ qca->ibs_recv_wacks++;
+
+ switch (qca->tx_ibs_state) {
+ case HCI_IBS_TX_AWAKE:
+ /* Expect one if we send 2 WAKEs */
+ BT_DBG("Received HCI_IBS_WAKE_ACK in tx state %d",
+ qca->tx_ibs_state);
+ break;
+
+ case HCI_IBS_TX_WAKING:
+ /* Send pending packets */
+ while ((skb = skb_dequeue(&qca->tx_wait_q)))
+ skb_queue_tail(&qca->txq, skb);
+
+ /* Switch timers and change state to HCI_IBS_TX_AWAKE */
+ del_timer(&qca->wake_retrans_timer);
+ idle_delay = msecs_to_jiffies(qca->tx_idle_delay);
+ mod_timer(&qca->tx_idle_timer, jiffies + idle_delay);
+ qca->tx_ibs_state = HCI_IBS_TX_AWAKE;
+ break;
+
+ case HCI_IBS_TX_ASLEEP:
+ /* Fall through */
+
+ default:
+ BT_ERR("Received HCI_IBS_WAKE_ACK in tx state %d",
+ qca->tx_ibs_state);
+ break;
+ }
+
+ spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
+
+ /* Actually send the packets */
+ hci_uart_tx_wakeup(hu);
+}
+
+/* Enqueue frame for transmittion (padding, crc, etc) may be called from
+ * two simultaneous tasklets.
+ */
+static int qca_enqueue(struct hci_uart *hu, struct sk_buff *skb)
+{
+ unsigned long flags = 0, idle_delay;
+ struct qca_data *qca = hu->priv;
+
+ BT_DBG("hu %p qca enq skb %p tx_ibs_state %d", hu, skb,
+ qca->tx_ibs_state);
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+
+ /* Don't go to sleep in middle of patch download or
+ * Out-Of-Band(GPIOs control) sleep is selected.
+ */
+ if (!test_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags)) {
+ skb_queue_tail(&qca->txq, skb);
+ return 0;
+ }
+
+ spin_lock_irqsave(&qca->hci_ibs_lock, flags);
+
+ /* Act according to current state */
+ switch (qca->tx_ibs_state) {
+ case HCI_IBS_TX_AWAKE:
+ BT_DBG("Device awake, sending normally");
+ skb_queue_tail(&qca->txq, skb);
+ idle_delay = msecs_to_jiffies(qca->tx_idle_delay);
+ mod_timer(&qca->tx_idle_timer, jiffies + idle_delay);
+ break;
+
+ case HCI_IBS_TX_ASLEEP:
+ BT_DBG("Device asleep, waking up and queueing packet");
+ /* Save packet for later */
+ skb_queue_tail(&qca->tx_wait_q, skb);
+
+ qca->tx_ibs_state = HCI_IBS_TX_WAKING;
+ /* Schedule a work queue to wake up device */
+ queue_work(qca->workqueue, &qca->ws_awake_device);
+ break;
+
+ case HCI_IBS_TX_WAKING:
+ BT_DBG("Device waking up, queueing packet");
+ /* Transient state; just keep packet for later */
+ skb_queue_tail(&qca->tx_wait_q, skb);
+ break;
+
+ default:
+ BT_ERR("Illegal tx state: %d (losing packet)",
+ qca->tx_ibs_state);
+ kfree_skb(skb);
+ break;
+ }
+
+ spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
+
+ return 0;
+}
+
+static int qca_ibs_sleep_ind(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct hci_uart *hu = hci_get_drvdata(hdev);
+
+ BT_DBG("hu %p recv hci ibs cmd 0x%x", hu, HCI_IBS_SLEEP_IND);
+
+ device_want_to_sleep(hu);
+
+ kfree_skb(skb);
+ return 0;
+}
+
+static int qca_ibs_wake_ind(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct hci_uart *hu = hci_get_drvdata(hdev);
+
+ BT_DBG("hu %p recv hci ibs cmd 0x%x", hu, HCI_IBS_WAKE_IND);
+
+ device_want_to_wakeup(hu);
+
+ kfree_skb(skb);
+ return 0;
+}
+
+static int qca_ibs_wake_ack(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct hci_uart *hu = hci_get_drvdata(hdev);
+
+ BT_DBG("hu %p recv hci ibs cmd 0x%x", hu, HCI_IBS_WAKE_ACK);
+
+ device_woke_up(hu);
+
+ kfree_skb(skb);
+ return 0;
+}
+
+#define QCA_IBS_SLEEP_IND_EVENT \
+ .type = HCI_IBS_SLEEP_IND, \
+ .hlen = 0, \
+ .loff = 0, \
+ .lsize = 0, \
+ .maxlen = HCI_MAX_IBS_SIZE
+
+#define QCA_IBS_WAKE_IND_EVENT \
+ .type = HCI_IBS_WAKE_IND, \
+ .hlen = 0, \
+ .loff = 0, \
+ .lsize = 0, \
+ .maxlen = HCI_MAX_IBS_SIZE
+
+#define QCA_IBS_WAKE_ACK_EVENT \
+ .type = HCI_IBS_WAKE_ACK, \
+ .hlen = 0, \
+ .loff = 0, \
+ .lsize = 0, \
+ .maxlen = HCI_MAX_IBS_SIZE
+
+static const struct h4_recv_pkt qca_recv_pkts[] = {
+ { H4_RECV_ACL, .recv = hci_recv_frame },
+ { H4_RECV_SCO, .recv = hci_recv_frame },
+ { H4_RECV_EVENT, .recv = hci_recv_frame },
+ { QCA_IBS_WAKE_IND_EVENT, .recv = qca_ibs_wake_ind },
+ { QCA_IBS_WAKE_ACK_EVENT, .recv = qca_ibs_wake_ack },
+ { QCA_IBS_SLEEP_IND_EVENT, .recv = qca_ibs_sleep_ind },
+};
+
+static int qca_recv(struct hci_uart *hu, const void *data, int count)
+{
+ struct qca_data *qca = hu->priv;
+
+ if (!test_bit(HCI_UART_REGISTERED, &hu->flags))
+ return -EUNATCH;
+
+ qca->rx_skb = h4_recv_buf(hu->hdev, qca->rx_skb, data, count,
+ qca_recv_pkts, ARRAY_SIZE(qca_recv_pkts));
+ if (IS_ERR(qca->rx_skb)) {
+ int err = PTR_ERR(qca->rx_skb);
+ BT_ERR("%s: Frame reassembly failed (%d)", hu->hdev->name, err);
+ qca->rx_skb = NULL;
+ return err;
+ }
+
+ return count;
+}
+
+static struct sk_buff *qca_dequeue(struct hci_uart *hu)
+{
+ struct qca_data *qca = hu->priv;
+
+ return skb_dequeue(&qca->txq);
+}
+
+static uint8_t qca_get_baudrate_value(int speed)
+{
+ switch (speed) {
+ case 9600:
+ return QCA_BAUDRATE_9600;
+ case 19200:
+ return QCA_BAUDRATE_19200;
+ case 38400:
+ return QCA_BAUDRATE_38400;
+ case 57600:
+ return QCA_BAUDRATE_57600;
+ case 115200:
+ return QCA_BAUDRATE_115200;
+ case 230400:
+ return QCA_BAUDRATE_230400;
+ case 460800:
+ return QCA_BAUDRATE_460800;
+ case 500000:
+ return QCA_BAUDRATE_500000;
+ case 921600:
+ return QCA_BAUDRATE_921600;
+ case 1000000:
+ return QCA_BAUDRATE_1000000;
+ case 2000000:
+ return QCA_BAUDRATE_2000000;
+ case 3000000:
+ return QCA_BAUDRATE_3000000;
+ case 3500000:
+ return QCA_BAUDRATE_3500000;
+ default:
+ return QCA_BAUDRATE_115200;
+ }
+}
+
+static int qca_set_baudrate(struct hci_dev *hdev, uint8_t baudrate)
+{
+ struct hci_uart *hu = hci_get_drvdata(hdev);
+ struct qca_data *qca = hu->priv;
+ struct sk_buff *skb;
+ u8 cmd[] = { 0x01, 0x48, 0xFC, 0x01, 0x00 };
+
+ if (baudrate > QCA_BAUDRATE_3000000)
+ return -EINVAL;
+
+ cmd[4] = baudrate;
+
+ skb = bt_skb_alloc(sizeof(cmd), GFP_ATOMIC);
+ if (!skb) {
+ BT_ERR("Failed to allocate memory for baudrate packet");
+ return -ENOMEM;
+ }
+
+ /* Assign commands to change baudrate and packet type. */
+ memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
+ bt_cb(skb)->pkt_type = HCI_COMMAND_PKT;
+
+ skb_queue_tail(&qca->txq, skb);
+ hci_uart_tx_wakeup(hu);
+
+ /* wait 300ms to change new baudrate on controller side
+ * controller will come back after they receive this HCI command
+ * then host can communicate with new baudrate to controller
+ */
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(msecs_to_jiffies(BAUDRATE_SETTLE_TIMEOUT_MS));
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ return 0;
+}
+
+static int qca_setup(struct hci_uart *hu)
+{
+ struct hci_dev *hdev = hu->hdev;
+ struct qca_data *qca = hu->priv;
+ unsigned int speed, qca_baudrate = QCA_BAUDRATE_115200;
+ int ret;
+
+ BT_INFO("%s: ROME setup", hdev->name);
+
+ /* Patch downloading has to be done without IBS mode */
+ clear_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
+
+ /* Setup initial baudrate */
+ speed = 0;
+ if (hu->init_speed)
+ speed = hu->init_speed;
+ else if (hu->proto->init_speed)
+ speed = hu->proto->init_speed;
+
+ if (speed)
+ hci_uart_set_baudrate(hu, speed);
+
+ /* Setup user speed if needed */
+ speed = 0;
+ if (hu->oper_speed)
+ speed = hu->oper_speed;
+ else if (hu->proto->oper_speed)
+ speed = hu->proto->oper_speed;
+
+ if (speed) {
+ qca_baudrate = qca_get_baudrate_value(speed);
+
+ BT_INFO("%s: Set UART speed to %d", hdev->name, speed);
+ ret = qca_set_baudrate(hdev, qca_baudrate);
+ if (ret) {
+ BT_ERR("%s: Failed to change the baud rate (%d)",
+ hdev->name, ret);
+ return ret;
+ }
+ hci_uart_set_baudrate(hu, speed);
+ }
+
+ /* Setup patch / NVM configurations */
+ ret = qca_uart_setup_rome(hdev, qca_baudrate);
+ if (!ret) {
+ set_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
+ qca_debugfs_init(hdev);
+ }
+
+ /* Setup bdaddr */
+ hu->hdev->set_bdaddr = qca_set_bdaddr_rome;
+
+ return ret;
+}
+
+static struct hci_uart_proto qca_proto = {
+ .id = HCI_UART_QCA,
+ .name = "QCA",
+ .manufacturer = 29,
+ .init_speed = 115200,
+ .oper_speed = 3000000,
+ .open = qca_open,
+ .close = qca_close,
+ .flush = qca_flush,
+ .setup = qca_setup,
+ .recv = qca_recv,
+ .enqueue = qca_enqueue,
+ .dequeue = qca_dequeue,
+};
+
+int __init qca_init(void)
+{
+ return hci_uart_register_proto(&qca_proto);
+}
+
+int __exit qca_deinit(void)
+{
+ return hci_uart_unregister_proto(&qca_proto);
+}
diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h
new file mode 100644
index 0000000..82c92f1
--- /dev/null
+++ b/drivers/bluetooth/hci_uart.h
@@ -0,0 +1,184 @@
+/*
+ *
+ * Bluetooth HCI UART driver
+ *
+ * Copyright (C) 2000-2001 Qualcomm Incorporated
+ * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
+ * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef N_HCI
+#define N_HCI 15
+#endif
+
+/* Ioctls */
+#define HCIUARTSETPROTO _IOW('U', 200, int)
+#define HCIUARTGETPROTO _IOR('U', 201, int)
+#define HCIUARTGETDEVICE _IOR('U', 202, int)
+#define HCIUARTSETFLAGS _IOW('U', 203, int)
+#define HCIUARTGETFLAGS _IOR('U', 204, int)
+
+/* UART protocols */
+#define HCI_UART_MAX_PROTO 9
+
+#define HCI_UART_H4 0
+#define HCI_UART_BCSP 1
+#define HCI_UART_3WIRE 2
+#define HCI_UART_H4DS 3
+#define HCI_UART_LL 4
+#define HCI_UART_ATH3K 5
+#define HCI_UART_INTEL 6
+#define HCI_UART_BCM 7
+#define HCI_UART_QCA 8
+
+#define HCI_UART_RAW_DEVICE 0
+#define HCI_UART_RESET_ON_INIT 1
+#define HCI_UART_CREATE_AMP 2
+#define HCI_UART_INIT_PENDING 3
+#define HCI_UART_EXT_CONFIG 4
+#define HCI_UART_VND_DETECT 5
+
+struct hci_uart;
+
+struct hci_uart_proto {
+ unsigned int id;
+ const char *name;
+ unsigned int manufacturer;
+ unsigned int init_speed;
+ unsigned int oper_speed;
+ int (*open)(struct hci_uart *hu);
+ int (*close)(struct hci_uart *hu);
+ int (*flush)(struct hci_uart *hu);
+ int (*setup)(struct hci_uart *hu);
+ int (*set_baudrate)(struct hci_uart *hu, unsigned int speed);
+ int (*recv)(struct hci_uart *hu, const void *data, int len);
+ int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb);
+ struct sk_buff *(*dequeue)(struct hci_uart *hu);
+};
+
+struct hci_uart {
+ struct tty_struct *tty;
+ struct hci_dev *hdev;
+ unsigned long flags;
+ unsigned long hdev_flags;
+
+ struct work_struct init_ready;
+ struct work_struct write_work;
+
+ const struct hci_uart_proto *proto;
+ void *priv;
+
+ struct sk_buff *tx_skb;
+ unsigned long tx_state;
+
+ unsigned int init_speed;
+ unsigned int oper_speed;
+};
+
+/* HCI_UART proto flag bits */
+#define HCI_UART_PROTO_SET 0
+#define HCI_UART_REGISTERED 1
+
+/* TX states */
+#define HCI_UART_SENDING 1
+#define HCI_UART_TX_WAKEUP 2
+
+int hci_uart_register_proto(const struct hci_uart_proto *p);
+int hci_uart_unregister_proto(const struct hci_uart_proto *p);
+int hci_uart_tx_wakeup(struct hci_uart *hu);
+int hci_uart_init_ready(struct hci_uart *hu);
+void hci_uart_init_tty(struct hci_uart *hu);
+void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed);
+void hci_uart_set_flow_control(struct hci_uart *hu, bool enable);
+void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed,
+ unsigned int oper_speed);
+
+#ifdef CONFIG_BT_HCIUART_H4
+int h4_init(void);
+int h4_deinit(void);
+
+struct h4_recv_pkt {
+ u8 type; /* Packet type */
+ u8 hlen; /* Header length */
+ u8 loff; /* Data length offset in header */
+ u8 lsize; /* Data length field size */
+ u16 maxlen; /* Max overall packet length */
+ int (*recv)(struct hci_dev *hdev, struct sk_buff *skb);
+};
+
+#define H4_RECV_ACL \
+ .type = HCI_ACLDATA_PKT, \
+ .hlen = HCI_ACL_HDR_SIZE, \
+ .loff = 2, \
+ .lsize = 2, \
+ .maxlen = HCI_MAX_FRAME_SIZE \
+
+#define H4_RECV_SCO \
+ .type = HCI_SCODATA_PKT, \
+ .hlen = HCI_SCO_HDR_SIZE, \
+ .loff = 2, \
+ .lsize = 1, \
+ .maxlen = HCI_MAX_SCO_SIZE
+
+#define H4_RECV_EVENT \
+ .type = HCI_EVENT_PKT, \
+ .hlen = HCI_EVENT_HDR_SIZE, \
+ .loff = 1, \
+ .lsize = 1, \
+ .maxlen = HCI_MAX_EVENT_SIZE
+
+struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
+ const unsigned char *buffer, int count,
+ const struct h4_recv_pkt *pkts, int pkts_count);
+#endif
+
+#ifdef CONFIG_BT_HCIUART_BCSP
+int bcsp_init(void);
+int bcsp_deinit(void);
+#endif
+
+#ifdef CONFIG_BT_HCIUART_LL
+int ll_init(void);
+int ll_deinit(void);
+#endif
+
+#ifdef CONFIG_BT_HCIUART_ATH3K
+int ath_init(void);
+int ath_deinit(void);
+#endif
+
+#ifdef CONFIG_BT_HCIUART_3WIRE
+int h5_init(void);
+int h5_deinit(void);
+#endif
+
+#ifdef CONFIG_BT_HCIUART_INTEL
+int intel_init(void);
+int intel_deinit(void);
+#endif
+
+#ifdef CONFIG_BT_HCIUART_BCM
+int bcm_init(void);
+int bcm_deinit(void);
+#endif
+
+#ifdef CONFIG_BT_HCIUART_QCA
+int qca_init(void);
+int qca_deinit(void);
+#endif
diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c
new file mode 100644
index 0000000..597b2d1
--- /dev/null
+++ b/drivers/bluetooth/hci_vhci.c
@@ -0,0 +1,404 @@
+/*
+ *
+ * Bluetooth virtual HCI driver
+ *
+ * Copyright (C) 2000-2001 Qualcomm Incorporated
+ * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
+ * Copyright (C) 2004-2006 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <asm/unaligned.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/poll.h>
+
+#include <linux/skbuff.h>
+#include <linux/miscdevice.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#define VERSION "1.5"
+
+static bool amp;
+
+struct vhci_data {
+ struct hci_dev *hdev;
+
+ wait_queue_head_t read_wait;
+ struct sk_buff_head readq;
+
+ struct mutex open_mutex;
+ struct delayed_work open_timeout;
+};
+
+static int vhci_open_dev(struct hci_dev *hdev)
+{
+ return 0;
+}
+
+static int vhci_close_dev(struct hci_dev *hdev)
+{
+ struct vhci_data *data = hci_get_drvdata(hdev);
+
+ skb_queue_purge(&data->readq);
+
+ return 0;
+}
+
+static int vhci_flush(struct hci_dev *hdev)
+{
+ struct vhci_data *data = hci_get_drvdata(hdev);
+
+ skb_queue_purge(&data->readq);
+
+ return 0;
+}
+
+static int vhci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct vhci_data *data = hci_get_drvdata(hdev);
+
+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+ skb_queue_tail(&data->readq, skb);
+
+ wake_up_interruptible(&data->read_wait);
+ return 0;
+}
+
+static int __vhci_create_device(struct vhci_data *data, __u8 opcode)
+{
+ struct hci_dev *hdev;
+ struct sk_buff *skb;
+ __u8 dev_type;
+
+ if (data->hdev)
+ return -EBADFD;
+
+ /* bits 0-1 are dev_type (BR/EDR or AMP) */
+ dev_type = opcode & 0x03;
+
+ if (dev_type != HCI_BREDR && dev_type != HCI_AMP)
+ return -EINVAL;
+
+ /* bits 2-5 are reserved (must be zero) */
+ if (opcode & 0x3c)
+ return -EINVAL;
+
+ skb = bt_skb_alloc(4, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ hdev = hci_alloc_dev();
+ if (!hdev) {
+ kfree_skb(skb);
+ return -ENOMEM;
+ }
+
+ data->hdev = hdev;
+
+ hdev->bus = HCI_VIRTUAL;
+ hdev->dev_type = dev_type;
+ hci_set_drvdata(hdev, data);
+
+ hdev->open = vhci_open_dev;
+ hdev->close = vhci_close_dev;
+ hdev->flush = vhci_flush;
+ hdev->send = vhci_send_frame;
+
+ /* bit 6 is for external configuration */
+ if (opcode & 0x40)
+ set_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks);
+
+ /* bit 7 is for raw device */
+ if (opcode & 0x80)
+ set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
+
+ if (hci_register_dev(hdev) < 0) {
+ BT_ERR("Can't register HCI device");
+ hci_free_dev(hdev);
+ data->hdev = NULL;
+ kfree_skb(skb);
+ return -EBUSY;
+ }
+
+ bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
+
+ *skb_put(skb, 1) = 0xff;
+ *skb_put(skb, 1) = opcode;
+ put_unaligned_le16(hdev->id, skb_put(skb, 2));
+ skb_queue_tail(&data->readq, skb);
+
+ wake_up_interruptible(&data->read_wait);
+ return 0;
+}
+
+static int vhci_create_device(struct vhci_data *data, __u8 opcode)
+{
+ int err;
+
+ mutex_lock(&data->open_mutex);
+ err = __vhci_create_device(data, opcode);
+ mutex_unlock(&data->open_mutex);
+
+ return err;
+}
+
+static inline ssize_t vhci_get_user(struct vhci_data *data,
+ struct iov_iter *from)
+{
+ size_t len = iov_iter_count(from);
+ struct sk_buff *skb;
+ __u8 pkt_type, opcode;
+ int ret;
+
+ if (len < 2 || len > HCI_MAX_FRAME_SIZE)
+ return -EINVAL;
+
+ skb = bt_skb_alloc(len, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ if (copy_from_iter(skb_put(skb, len), len, from) != len) {
+ kfree_skb(skb);
+ return -EFAULT;
+ }
+
+ pkt_type = *((__u8 *) skb->data);
+ skb_pull(skb, 1);
+
+ switch (pkt_type) {
+ case HCI_EVENT_PKT:
+ case HCI_ACLDATA_PKT:
+ case HCI_SCODATA_PKT:
+ if (!data->hdev) {
+ kfree_skb(skb);
+ return -ENODEV;
+ }
+
+ bt_cb(skb)->pkt_type = pkt_type;
+
+ ret = hci_recv_frame(data->hdev, skb);
+ break;
+
+ case HCI_VENDOR_PKT:
+ cancel_delayed_work_sync(&data->open_timeout);
+
+ opcode = *((__u8 *) skb->data);
+ skb_pull(skb, 1);
+
+ if (skb->len > 0) {
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ kfree_skb(skb);
+
+ ret = vhci_create_device(data, opcode);
+ break;
+
+ default:
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ return (ret < 0) ? ret : len;
+}
+
+static inline ssize_t vhci_put_user(struct vhci_data *data,
+ struct sk_buff *skb,
+ char __user *buf, int count)
+{
+ char __user *ptr = buf;
+ int len;
+
+ len = min_t(unsigned int, skb->len, count);
+
+ if (copy_to_user(ptr, skb->data, len))
+ return -EFAULT;
+
+ if (!data->hdev)
+ return len;
+
+ data->hdev->stat.byte_tx += len;
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_COMMAND_PKT:
+ data->hdev->stat.cmd_tx++;
+ break;
+ case HCI_ACLDATA_PKT:
+ data->hdev->stat.acl_tx++;
+ break;
+ case HCI_SCODATA_PKT:
+ data->hdev->stat.sco_tx++;
+ break;
+ }
+
+ return len;
+}
+
+static ssize_t vhci_read(struct file *file,
+ char __user *buf, size_t count, loff_t *pos)
+{
+ struct vhci_data *data = file->private_data;
+ struct sk_buff *skb;
+ ssize_t ret = 0;
+
+ while (count) {
+ skb = skb_dequeue(&data->readq);
+ if (skb) {
+ ret = vhci_put_user(data, skb, buf, count);
+ if (ret < 0)
+ skb_queue_head(&data->readq, skb);
+ else
+ kfree_skb(skb);
+ break;
+ }
+
+ if (file->f_flags & O_NONBLOCK) {
+ ret = -EAGAIN;
+ break;
+ }
+
+ ret = wait_event_interruptible(data->read_wait,
+ !skb_queue_empty(&data->readq));
+ if (ret < 0)
+ break;
+ }
+
+ return ret;
+}
+
+static ssize_t vhci_write(struct kiocb *iocb, struct iov_iter *from)
+{
+ struct file *file = iocb->ki_filp;
+ struct vhci_data *data = file->private_data;
+
+ return vhci_get_user(data, from);
+}
+
+static unsigned int vhci_poll(struct file *file, poll_table *wait)
+{
+ struct vhci_data *data = file->private_data;
+
+ poll_wait(file, &data->read_wait, wait);
+
+ if (!skb_queue_empty(&data->readq))
+ return POLLIN | POLLRDNORM;
+
+ return POLLOUT | POLLWRNORM;
+}
+
+static void vhci_open_timeout(struct work_struct *work)
+{
+ struct vhci_data *data = container_of(work, struct vhci_data,
+ open_timeout.work);
+
+ vhci_create_device(data, amp ? HCI_AMP : HCI_BREDR);
+}
+
+static int vhci_open(struct inode *inode, struct file *file)
+{
+ struct vhci_data *data;
+
+ data = kzalloc(sizeof(struct vhci_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ skb_queue_head_init(&data->readq);
+ init_waitqueue_head(&data->read_wait);
+
+ mutex_init(&data->open_mutex);
+ INIT_DELAYED_WORK(&data->open_timeout, vhci_open_timeout);
+
+ file->private_data = data;
+ nonseekable_open(inode, file);
+
+ schedule_delayed_work(&data->open_timeout, msecs_to_jiffies(1000));
+
+ return 0;
+}
+
+static int vhci_release(struct inode *inode, struct file *file)
+{
+ struct vhci_data *data = file->private_data;
+ struct hci_dev *hdev;
+
+ cancel_delayed_work_sync(&data->open_timeout);
+
+ hdev = data->hdev;
+
+ if (hdev) {
+ hci_unregister_dev(hdev);
+ hci_free_dev(hdev);
+ }
+
+ skb_queue_purge(&data->readq);
+ file->private_data = NULL;
+ kfree(data);
+
+ return 0;
+}
+
+static const struct file_operations vhci_fops = {
+ .owner = THIS_MODULE,
+ .read = vhci_read,
+ .write_iter = vhci_write,
+ .poll = vhci_poll,
+ .open = vhci_open,
+ .release = vhci_release,
+ .llseek = no_llseek,
+};
+
+static struct miscdevice vhci_miscdev = {
+ .name = "vhci",
+ .fops = &vhci_fops,
+ .minor = VHCI_MINOR,
+};
+
+static int __init vhci_init(void)
+{
+ BT_INFO("Virtual HCI driver ver %s", VERSION);
+
+ return misc_register(&vhci_miscdev);
+}
+
+static void __exit vhci_exit(void)
+{
+ misc_deregister(&vhci_miscdev);
+}
+
+module_init(vhci_init);
+module_exit(vhci_exit);
+
+module_param(amp, bool, 0644);
+MODULE_PARM_DESC(amp, "Create AMP controller device");
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Bluetooth virtual HCI driver ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("devname:vhci");
+MODULE_ALIAS_MISCDEV(VHCI_MINOR);