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/net/ethernet/intel/igbvf/Makefile b/drivers/net/ethernet/intel/igbvf/Makefile
new file mode 100644
index 0000000..044b0ad
--- /dev/null
+++ b/drivers/net/ethernet/intel/igbvf/Makefile
@@ -0,0 +1,38 @@
+################################################################################
+#
+# Intel(R) 82576 Virtual Function Linux driver
+# Copyright(c) 2009 - 2012 Intel Corporation.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms and conditions of the GNU General Public License,
+# version 2, as published by the Free Software Foundation.
+#
+# This program is distributed in the hope 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.,
+# 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# The full GNU General Public License is included in this distribution in
+# the file called "COPYING".
+#
+# Contact Information:
+# e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+# Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+#
+################################################################################
+
+#
+# Makefile for the Intel(R) 82576 VF ethernet driver
+#
+
+obj-$(CONFIG_IGBVF) += igbvf.o
+
+igbvf-objs := vf.o \
+ mbx.o \
+ ethtool.o \
+ netdev.o
+
diff --git a/drivers/net/ethernet/intel/igbvf/defines.h b/drivers/net/ethernet/intel/igbvf/defines.h
new file mode 100644
index 0000000..ae3f283
--- /dev/null
+++ b/drivers/net/ethernet/intel/igbvf/defines.h
@@ -0,0 +1,120 @@
+/*******************************************************************************
+
+ Intel(R) 82576 Virtual Function Linux driver
+ Copyright(c) 1999 - 2012 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#ifndef _E1000_DEFINES_H_
+#define _E1000_DEFINES_H_
+
+/* Number of Transmit and Receive Descriptors must be a multiple of 8 */
+#define REQ_TX_DESCRIPTOR_MULTIPLE 8
+#define REQ_RX_DESCRIPTOR_MULTIPLE 8
+
+/* IVAR valid bit */
+#define E1000_IVAR_VALID 0x80
+
+/* Receive Descriptor bit definitions */
+#define E1000_RXD_STAT_DD 0x01 /* Descriptor Done */
+#define E1000_RXD_STAT_EOP 0x02 /* End of Packet */
+#define E1000_RXD_STAT_IXSM 0x04 /* Ignore checksum */
+#define E1000_RXD_STAT_VP 0x08 /* IEEE VLAN Packet */
+#define E1000_RXD_STAT_UDPCS 0x10 /* UDP xsum calculated */
+#define E1000_RXD_STAT_TCPCS 0x20 /* TCP xsum calculated */
+#define E1000_RXD_STAT_IPCS 0x40 /* IP xsum calculated */
+#define E1000_RXD_ERR_SE 0x02 /* Symbol Error */
+#define E1000_RXD_SPC_VLAN_MASK 0x0FFF /* VLAN ID is in lower 12 bits */
+
+#define E1000_RXDEXT_STATERR_LB 0x00040000
+#define E1000_RXDEXT_STATERR_CE 0x01000000
+#define E1000_RXDEXT_STATERR_SE 0x02000000
+#define E1000_RXDEXT_STATERR_SEQ 0x04000000
+#define E1000_RXDEXT_STATERR_CXE 0x10000000
+#define E1000_RXDEXT_STATERR_TCPE 0x20000000
+#define E1000_RXDEXT_STATERR_IPE 0x40000000
+#define E1000_RXDEXT_STATERR_RXE 0x80000000
+
+/* Same mask, but for extended and packet split descriptors */
+#define E1000_RXDEXT_ERR_FRAME_ERR_MASK ( \
+ E1000_RXDEXT_STATERR_CE | \
+ E1000_RXDEXT_STATERR_SE | \
+ E1000_RXDEXT_STATERR_SEQ | \
+ E1000_RXDEXT_STATERR_CXE | \
+ E1000_RXDEXT_STATERR_RXE)
+
+/* Device Control */
+#define E1000_CTRL_RST 0x04000000 /* Global reset */
+
+/* Device Status */
+#define E1000_STATUS_FD 0x00000001 /* Full duplex.0=half,1=full */
+#define E1000_STATUS_LU 0x00000002 /* Link up.0=no,1=link */
+#define E1000_STATUS_TXOFF 0x00000010 /* transmission paused */
+#define E1000_STATUS_SPEED_10 0x00000000 /* Speed 10Mb/s */
+#define E1000_STATUS_SPEED_100 0x00000040 /* Speed 100Mb/s */
+#define E1000_STATUS_SPEED_1000 0x00000080 /* Speed 1000Mb/s */
+
+#define SPEED_10 10
+#define SPEED_100 100
+#define SPEED_1000 1000
+#define HALF_DUPLEX 1
+#define FULL_DUPLEX 2
+
+/* Transmit Descriptor bit definitions */
+#define E1000_TXD_POPTS_IXSM 0x01 /* Insert IP checksum */
+#define E1000_TXD_POPTS_TXSM 0x02 /* Insert TCP/UDP checksum */
+#define E1000_TXD_CMD_DEXT 0x20000000 /* Desc extension (0 = legacy) */
+#define E1000_TXD_STAT_DD 0x00000001 /* Desc Done */
+
+#define MAX_JUMBO_FRAME_SIZE 0x3F00
+
+/* 802.1q VLAN Packet Size */
+#define VLAN_TAG_SIZE 4 /* 802.3ac tag (not DMA'd) */
+
+/* Error Codes */
+#define E1000_SUCCESS 0
+#define E1000_ERR_CONFIG 3
+#define E1000_ERR_MAC_INIT 5
+#define E1000_ERR_MBX 15
+
+/* SRRCTL bit definitions */
+#define E1000_SRRCTL_BSIZEPKT_SHIFT 10 /* Shift _right_ */
+#define E1000_SRRCTL_BSIZEHDRSIZE_MASK 0x00000F00
+#define E1000_SRRCTL_BSIZEHDRSIZE_SHIFT 2 /* Shift _left_ */
+#define E1000_SRRCTL_DESCTYPE_ADV_ONEBUF 0x02000000
+#define E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS 0x0A000000
+#define E1000_SRRCTL_DESCTYPE_MASK 0x0E000000
+#define E1000_SRRCTL_DROP_EN 0x80000000
+
+#define E1000_SRRCTL_BSIZEPKT_MASK 0x0000007F
+#define E1000_SRRCTL_BSIZEHDR_MASK 0x00003F00
+
+/* Additional Descriptor Control definitions */
+#define E1000_TXDCTL_QUEUE_ENABLE 0x02000000 /* Enable specific Tx Que */
+#define E1000_RXDCTL_QUEUE_ENABLE 0x02000000 /* Enable specific Rx Que */
+
+/* Direct Cache Access (DCA) definitions */
+#define E1000_DCA_TXCTRL_TX_WB_RO_EN (1 << 11) /* Tx Desc writeback RO bit */
+
+#define E1000_VF_INIT_TIMEOUT 200 /* Number of retries to clear RSTI */
+
+#endif /* _E1000_DEFINES_H_ */
diff --git a/drivers/net/ethernet/intel/igbvf/ethtool.c b/drivers/net/ethernet/intel/igbvf/ethtool.c
new file mode 100644
index 0000000..b74ce53
--- /dev/null
+++ b/drivers/net/ethernet/intel/igbvf/ethtool.c
@@ -0,0 +1,474 @@
+/*******************************************************************************
+
+ Intel(R) 82576 Virtual Function Linux driver
+ Copyright(c) 2009 - 2012 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+/* ethtool support for igbvf */
+
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/pci.h>
+#include <linux/vmalloc.h>
+#include <linux/delay.h>
+
+#include "igbvf.h"
+#include <linux/if_vlan.h>
+
+struct igbvf_stats {
+ char stat_string[ETH_GSTRING_LEN];
+ int sizeof_stat;
+ int stat_offset;
+ int base_stat_offset;
+};
+
+#define IGBVF_STAT(current, base) \
+ sizeof(((struct igbvf_adapter *)0)->current), \
+ offsetof(struct igbvf_adapter, current), \
+ offsetof(struct igbvf_adapter, base)
+
+static const struct igbvf_stats igbvf_gstrings_stats[] = {
+ { "rx_packets", IGBVF_STAT(stats.gprc, stats.base_gprc) },
+ { "tx_packets", IGBVF_STAT(stats.gptc, stats.base_gptc) },
+ { "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) },
+ { "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) },
+ { "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) },
+ { "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) },
+ { "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) },
+ { "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) },
+ { "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) },
+ { "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) },
+ { "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) },
+ { "rx_header_split", IGBVF_STAT(rx_hdr_split, zero_base) },
+ { "alloc_rx_buff_failed", IGBVF_STAT(alloc_rx_buff_failed, zero_base) },
+};
+
+#define IGBVF_GLOBAL_STATS_LEN ARRAY_SIZE(igbvf_gstrings_stats)
+
+static const char igbvf_gstrings_test[][ETH_GSTRING_LEN] = {
+ "Link test (on/offline)"
+};
+
+#define IGBVF_TEST_LEN ARRAY_SIZE(igbvf_gstrings_test)
+
+static int igbvf_get_settings(struct net_device *netdev,
+ struct ethtool_cmd *ecmd)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ u32 status;
+
+ ecmd->supported = SUPPORTED_1000baseT_Full;
+
+ ecmd->advertising = ADVERTISED_1000baseT_Full;
+
+ ecmd->port = -1;
+ ecmd->transceiver = XCVR_DUMMY1;
+
+ status = er32(STATUS);
+ if (status & E1000_STATUS_LU) {
+ if (status & E1000_STATUS_SPEED_1000)
+ ethtool_cmd_speed_set(ecmd, SPEED_1000);
+ else if (status & E1000_STATUS_SPEED_100)
+ ethtool_cmd_speed_set(ecmd, SPEED_100);
+ else
+ ethtool_cmd_speed_set(ecmd, SPEED_10);
+
+ if (status & E1000_STATUS_FD)
+ ecmd->duplex = DUPLEX_FULL;
+ else
+ ecmd->duplex = DUPLEX_HALF;
+ } else {
+ ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
+ ecmd->duplex = DUPLEX_UNKNOWN;
+ }
+
+ ecmd->autoneg = AUTONEG_DISABLE;
+
+ return 0;
+}
+
+static int igbvf_set_settings(struct net_device *netdev,
+ struct ethtool_cmd *ecmd)
+{
+ return -EOPNOTSUPP;
+}
+
+static void igbvf_get_pauseparam(struct net_device *netdev,
+ struct ethtool_pauseparam *pause)
+{
+}
+
+static int igbvf_set_pauseparam(struct net_device *netdev,
+ struct ethtool_pauseparam *pause)
+{
+ return -EOPNOTSUPP;
+}
+
+static u32 igbvf_get_msglevel(struct net_device *netdev)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ return adapter->msg_enable;
+}
+
+static void igbvf_set_msglevel(struct net_device *netdev, u32 data)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ adapter->msg_enable = data;
+}
+
+static int igbvf_get_regs_len(struct net_device *netdev)
+{
+#define IGBVF_REGS_LEN 8
+ return IGBVF_REGS_LEN * sizeof(u32);
+}
+
+static void igbvf_get_regs(struct net_device *netdev,
+ struct ethtool_regs *regs, void *p)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ u32 *regs_buff = p;
+
+ memset(p, 0, IGBVF_REGS_LEN * sizeof(u32));
+
+ regs->version = (1 << 24) | (adapter->pdev->revision << 16) |
+ adapter->pdev->device;
+
+ regs_buff[0] = er32(CTRL);
+ regs_buff[1] = er32(STATUS);
+
+ regs_buff[2] = er32(RDLEN(0));
+ regs_buff[3] = er32(RDH(0));
+ regs_buff[4] = er32(RDT(0));
+
+ regs_buff[5] = er32(TDLEN(0));
+ regs_buff[6] = er32(TDH(0));
+ regs_buff[7] = er32(TDT(0));
+}
+
+static int igbvf_get_eeprom_len(struct net_device *netdev)
+{
+ return 0;
+}
+
+static int igbvf_get_eeprom(struct net_device *netdev,
+ struct ethtool_eeprom *eeprom, u8 *bytes)
+{
+ return -EOPNOTSUPP;
+}
+
+static int igbvf_set_eeprom(struct net_device *netdev,
+ struct ethtool_eeprom *eeprom, u8 *bytes)
+{
+ return -EOPNOTSUPP;
+}
+
+static void igbvf_get_drvinfo(struct net_device *netdev,
+ struct ethtool_drvinfo *drvinfo)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ strlcpy(drvinfo->driver, igbvf_driver_name, sizeof(drvinfo->driver));
+ strlcpy(drvinfo->version, igbvf_driver_version,
+ sizeof(drvinfo->version));
+ strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
+ sizeof(drvinfo->bus_info));
+}
+
+static void igbvf_get_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *ring)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct igbvf_ring *tx_ring = adapter->tx_ring;
+ struct igbvf_ring *rx_ring = adapter->rx_ring;
+
+ ring->rx_max_pending = IGBVF_MAX_RXD;
+ ring->tx_max_pending = IGBVF_MAX_TXD;
+ ring->rx_pending = rx_ring->count;
+ ring->tx_pending = tx_ring->count;
+}
+
+static int igbvf_set_ringparam(struct net_device *netdev,
+ struct ethtool_ringparam *ring)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct igbvf_ring *temp_ring;
+ int err = 0;
+ u32 new_rx_count, new_tx_count;
+
+ if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
+ return -EINVAL;
+
+ new_rx_count = max_t(u32, ring->rx_pending, IGBVF_MIN_RXD);
+ new_rx_count = min_t(u32, new_rx_count, IGBVF_MAX_RXD);
+ new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
+
+ new_tx_count = max_t(u32, ring->tx_pending, IGBVF_MIN_TXD);
+ new_tx_count = min_t(u32, new_tx_count, IGBVF_MAX_TXD);
+ new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
+
+ if ((new_tx_count == adapter->tx_ring->count) &&
+ (new_rx_count == adapter->rx_ring->count)) {
+ /* nothing to do */
+ return 0;
+ }
+
+ while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
+ usleep_range(1000, 2000);
+
+ if (!netif_running(adapter->netdev)) {
+ adapter->tx_ring->count = new_tx_count;
+ adapter->rx_ring->count = new_rx_count;
+ goto clear_reset;
+ }
+
+ temp_ring = vmalloc(sizeof(struct igbvf_ring));
+ if (!temp_ring) {
+ err = -ENOMEM;
+ goto clear_reset;
+ }
+
+ igbvf_down(adapter);
+
+ /* We can't just free everything and then setup again,
+ * because the ISRs in MSI-X mode get passed pointers
+ * to the Tx and Rx ring structs.
+ */
+ if (new_tx_count != adapter->tx_ring->count) {
+ memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring));
+
+ temp_ring->count = new_tx_count;
+ err = igbvf_setup_tx_resources(adapter, temp_ring);
+ if (err)
+ goto err_setup;
+
+ igbvf_free_tx_resources(adapter->tx_ring);
+
+ memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring));
+ }
+
+ if (new_rx_count != adapter->rx_ring->count) {
+ memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring));
+
+ temp_ring->count = new_rx_count;
+ err = igbvf_setup_rx_resources(adapter, temp_ring);
+ if (err)
+ goto err_setup;
+
+ igbvf_free_rx_resources(adapter->rx_ring);
+
+ memcpy(adapter->rx_ring, temp_ring, sizeof(struct igbvf_ring));
+ }
+err_setup:
+ igbvf_up(adapter);
+ vfree(temp_ring);
+clear_reset:
+ clear_bit(__IGBVF_RESETTING, &adapter->state);
+ return err;
+}
+
+static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ *data = 0;
+
+ hw->mac.ops.check_for_link(hw);
+
+ if (!(er32(STATUS) & E1000_STATUS_LU))
+ *data = 1;
+
+ return *data;
+}
+
+static void igbvf_diag_test(struct net_device *netdev,
+ struct ethtool_test *eth_test, u64 *data)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ set_bit(__IGBVF_TESTING, &adapter->state);
+
+ /* Link test performed before hardware reset so autoneg doesn't
+ * interfere with test result
+ */
+ if (igbvf_link_test(adapter, &data[0]))
+ eth_test->flags |= ETH_TEST_FL_FAILED;
+
+ clear_bit(__IGBVF_TESTING, &adapter->state);
+ msleep_interruptible(4 * 1000);
+}
+
+static void igbvf_get_wol(struct net_device *netdev,
+ struct ethtool_wolinfo *wol)
+{
+ wol->supported = 0;
+ wol->wolopts = 0;
+}
+
+static int igbvf_set_wol(struct net_device *netdev,
+ struct ethtool_wolinfo *wol)
+{
+ return -EOPNOTSUPP;
+}
+
+static int igbvf_get_coalesce(struct net_device *netdev,
+ struct ethtool_coalesce *ec)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ if (adapter->requested_itr <= 3)
+ ec->rx_coalesce_usecs = adapter->requested_itr;
+ else
+ ec->rx_coalesce_usecs = adapter->current_itr >> 2;
+
+ return 0;
+}
+
+static int igbvf_set_coalesce(struct net_device *netdev,
+ struct ethtool_coalesce *ec)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+
+ if ((ec->rx_coalesce_usecs >= IGBVF_MIN_ITR_USECS) &&
+ (ec->rx_coalesce_usecs <= IGBVF_MAX_ITR_USECS)) {
+ adapter->current_itr = ec->rx_coalesce_usecs << 2;
+ adapter->requested_itr = 1000000000 /
+ (adapter->current_itr * 256);
+ } else if ((ec->rx_coalesce_usecs == 3) ||
+ (ec->rx_coalesce_usecs == 2)) {
+ adapter->current_itr = IGBVF_START_ITR;
+ adapter->requested_itr = ec->rx_coalesce_usecs;
+ } else if (ec->rx_coalesce_usecs == 0) {
+ /* The user's desire is to turn off interrupt throttling
+ * altogether, but due to HW limitations, we can't do that.
+ * Instead we set a very small value in EITR, which would
+ * allow ~967k interrupts per second, but allow the adapter's
+ * internal clocking to still function properly.
+ */
+ adapter->current_itr = 4;
+ adapter->requested_itr = 1000000000 /
+ (adapter->current_itr * 256);
+ } else {
+ return -EINVAL;
+ }
+
+ writel(adapter->current_itr,
+ hw->hw_addr + adapter->rx_ring->itr_register);
+
+ return 0;
+}
+
+static int igbvf_nway_reset(struct net_device *netdev)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ if (netif_running(netdev))
+ igbvf_reinit_locked(adapter);
+ return 0;
+}
+
+static void igbvf_get_ethtool_stats(struct net_device *netdev,
+ struct ethtool_stats *stats,
+ u64 *data)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ int i;
+
+ igbvf_update_stats(adapter);
+ for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
+ char *p = (char *)adapter +
+ igbvf_gstrings_stats[i].stat_offset;
+ char *b = (char *)adapter +
+ igbvf_gstrings_stats[i].base_stat_offset;
+ data[i] = ((igbvf_gstrings_stats[i].sizeof_stat ==
+ sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) :
+ (*(u32 *)p - *(u32 *)b));
+ }
+}
+
+static int igbvf_get_sset_count(struct net_device *dev, int stringset)
+{
+ switch (stringset) {
+ case ETH_SS_TEST:
+ return IGBVF_TEST_LEN;
+ case ETH_SS_STATS:
+ return IGBVF_GLOBAL_STATS_LEN;
+ default:
+ return -EINVAL;
+ }
+}
+
+static void igbvf_get_strings(struct net_device *netdev, u32 stringset,
+ u8 *data)
+{
+ u8 *p = data;
+ int i;
+
+ switch (stringset) {
+ case ETH_SS_TEST:
+ memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test));
+ break;
+ case ETH_SS_STATS:
+ for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
+ memcpy(p, igbvf_gstrings_stats[i].stat_string,
+ ETH_GSTRING_LEN);
+ p += ETH_GSTRING_LEN;
+ }
+ break;
+ }
+}
+
+static const struct ethtool_ops igbvf_ethtool_ops = {
+ .get_settings = igbvf_get_settings,
+ .set_settings = igbvf_set_settings,
+ .get_drvinfo = igbvf_get_drvinfo,
+ .get_regs_len = igbvf_get_regs_len,
+ .get_regs = igbvf_get_regs,
+ .get_wol = igbvf_get_wol,
+ .set_wol = igbvf_set_wol,
+ .get_msglevel = igbvf_get_msglevel,
+ .set_msglevel = igbvf_set_msglevel,
+ .nway_reset = igbvf_nway_reset,
+ .get_link = ethtool_op_get_link,
+ .get_eeprom_len = igbvf_get_eeprom_len,
+ .get_eeprom = igbvf_get_eeprom,
+ .set_eeprom = igbvf_set_eeprom,
+ .get_ringparam = igbvf_get_ringparam,
+ .set_ringparam = igbvf_set_ringparam,
+ .get_pauseparam = igbvf_get_pauseparam,
+ .set_pauseparam = igbvf_set_pauseparam,
+ .self_test = igbvf_diag_test,
+ .get_sset_count = igbvf_get_sset_count,
+ .get_strings = igbvf_get_strings,
+ .get_ethtool_stats = igbvf_get_ethtool_stats,
+ .get_coalesce = igbvf_get_coalesce,
+ .set_coalesce = igbvf_set_coalesce,
+};
+
+void igbvf_set_ethtool_ops(struct net_device *netdev)
+{
+ netdev->ethtool_ops = &igbvf_ethtool_ops;
+}
diff --git a/drivers/net/ethernet/intel/igbvf/igbvf.h b/drivers/net/ethernet/intel/igbvf/igbvf.h
new file mode 100644
index 0000000..f166baa
--- /dev/null
+++ b/drivers/net/ethernet/intel/igbvf/igbvf.h
@@ -0,0 +1,322 @@
+/*******************************************************************************
+
+ Intel(R) 82576 Virtual Function Linux driver
+ Copyright(c) 2009 - 2012 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+/* Linux PRO/1000 Ethernet Driver main header file */
+
+#ifndef _IGBVF_H_
+#define _IGBVF_H_
+
+#include <linux/types.h>
+#include <linux/timer.h>
+#include <linux/io.h>
+#include <linux/netdevice.h>
+#include <linux/if_vlan.h>
+
+#include "vf.h"
+
+/* Forward declarations */
+struct igbvf_info;
+struct igbvf_adapter;
+
+/* Interrupt defines */
+#define IGBVF_START_ITR 488 /* ~8000 ints/sec */
+#define IGBVF_4K_ITR 980
+#define IGBVF_20K_ITR 196
+#define IGBVF_70K_ITR 56
+
+enum latency_range {
+ lowest_latency = 0,
+ low_latency = 1,
+ bulk_latency = 2,
+ latency_invalid = 255
+};
+
+/* Interrupt modes, as used by the IntMode parameter */
+#define IGBVF_INT_MODE_LEGACY 0
+#define IGBVF_INT_MODE_MSI 1
+#define IGBVF_INT_MODE_MSIX 2
+
+/* Tx/Rx descriptor defines */
+#define IGBVF_DEFAULT_TXD 256
+#define IGBVF_MAX_TXD 4096
+#define IGBVF_MIN_TXD 80
+
+#define IGBVF_DEFAULT_RXD 256
+#define IGBVF_MAX_RXD 4096
+#define IGBVF_MIN_RXD 80
+
+#define IGBVF_MIN_ITR_USECS 10 /* 100000 irq/sec */
+#define IGBVF_MAX_ITR_USECS 10000 /* 100 irq/sec */
+
+/* RX descriptor control thresholds.
+ * PTHRESH - MAC will consider prefetch if it has fewer than this number of
+ * descriptors available in its onboard memory.
+ * Setting this to 0 disables RX descriptor prefetch.
+ * HTHRESH - MAC will only prefetch if there are at least this many descriptors
+ * available in host memory.
+ * If PTHRESH is 0, this should also be 0.
+ * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
+ * descriptors until either it has this many to write back, or the
+ * ITR timer expires.
+ */
+#define IGBVF_RX_PTHRESH 16
+#define IGBVF_RX_HTHRESH 8
+#define IGBVF_RX_WTHRESH 1
+
+/* this is the size past which hardware will drop packets when setting LPE=0 */
+#define MAXIMUM_ETHERNET_VLAN_SIZE 1522
+
+#define IGBVF_FC_PAUSE_TIME 0x0680 /* 858 usec */
+
+/* How many Tx Descriptors do we need to call netif_wake_queue ? */
+#define IGBVF_TX_QUEUE_WAKE 32
+/* How many Rx Buffers do we bundle into one write to the hardware ? */
+#define IGBVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */
+
+#define AUTO_ALL_MODES 0
+#define IGBVF_EEPROM_APME 0x0400
+
+#define IGBVF_MNG_VLAN_NONE (-1)
+
+/* Number of packet split data buffers (not including the header buffer) */
+#define PS_PAGE_BUFFERS (MAX_PS_BUFFERS - 1)
+
+enum igbvf_boards {
+ board_vf,
+ board_i350_vf,
+};
+
+struct igbvf_queue_stats {
+ u64 packets;
+ u64 bytes;
+};
+
+/* wrappers around a pointer to a socket buffer,
+ * so a DMA handle can be stored along with the buffer
+ */
+struct igbvf_buffer {
+ dma_addr_t dma;
+ struct sk_buff *skb;
+ union {
+ /* Tx */
+ struct {
+ unsigned long time_stamp;
+ union e1000_adv_tx_desc *next_to_watch;
+ u16 length;
+ u16 mapped_as_page;
+ };
+ /* Rx */
+ struct {
+ struct page *page;
+ u64 page_dma;
+ unsigned int page_offset;
+ };
+ };
+};
+
+union igbvf_desc {
+ union e1000_adv_rx_desc rx_desc;
+ union e1000_adv_tx_desc tx_desc;
+ struct e1000_adv_tx_context_desc tx_context_desc;
+};
+
+struct igbvf_ring {
+ struct igbvf_adapter *adapter; /* backlink */
+ union igbvf_desc *desc; /* pointer to ring memory */
+ dma_addr_t dma; /* phys address of ring */
+ unsigned int size; /* length of ring in bytes */
+ unsigned int count; /* number of desc. in ring */
+
+ u16 next_to_use;
+ u16 next_to_clean;
+
+ u16 head;
+ u16 tail;
+
+ /* array of buffer information structs */
+ struct igbvf_buffer *buffer_info;
+ struct napi_struct napi;
+
+ char name[IFNAMSIZ + 5];
+ u32 eims_value;
+ u32 itr_val;
+ enum latency_range itr_range;
+ u16 itr_register;
+ int set_itr;
+
+ struct sk_buff *rx_skb_top;
+
+ struct igbvf_queue_stats stats;
+};
+
+/* board specific private data structure */
+struct igbvf_adapter {
+ struct timer_list watchdog_timer;
+ struct timer_list blink_timer;
+
+ struct work_struct reset_task;
+ struct work_struct watchdog_task;
+
+ const struct igbvf_info *ei;
+
+ unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
+ u32 bd_number;
+ u32 rx_buffer_len;
+ u32 polling_interval;
+ u16 mng_vlan_id;
+ u16 link_speed;
+ u16 link_duplex;
+
+ spinlock_t tx_queue_lock; /* prevent concurrent tail updates */
+
+ /* track device up/down/testing state */
+ unsigned long state;
+
+ /* Interrupt Throttle Rate */
+ u32 requested_itr; /* ints/sec or adaptive */
+ u32 current_itr; /* Actual ITR register value, not ints/sec */
+
+ /* Tx */
+ struct igbvf_ring *tx_ring /* One per active queue */
+ ____cacheline_aligned_in_smp;
+
+ unsigned int restart_queue;
+ u32 txd_cmd;
+
+ u32 tx_int_delay;
+ u32 tx_abs_int_delay;
+
+ unsigned int total_tx_bytes;
+ unsigned int total_tx_packets;
+ unsigned int total_rx_bytes;
+ unsigned int total_rx_packets;
+
+ /* Tx stats */
+ u32 tx_timeout_count;
+ u32 tx_fifo_head;
+ u32 tx_head_addr;
+ u32 tx_fifo_size;
+ u32 tx_dma_failed;
+
+ /* Rx */
+ struct igbvf_ring *rx_ring;
+
+ u32 rx_int_delay;
+ u32 rx_abs_int_delay;
+
+ /* Rx stats */
+ u64 hw_csum_err;
+ u64 hw_csum_good;
+ u64 rx_hdr_split;
+ u32 alloc_rx_buff_failed;
+ u32 rx_dma_failed;
+
+ unsigned int rx_ps_hdr_size;
+ u32 max_frame_size;
+ u32 min_frame_size;
+
+ /* OS defined structs */
+ struct net_device *netdev;
+ struct pci_dev *pdev;
+ struct net_device_stats net_stats;
+ spinlock_t stats_lock; /* prevent concurrent stats updates */
+
+ /* structs defined in e1000_hw.h */
+ struct e1000_hw hw;
+
+ /* The VF counters don't clear on read so we have to get a base
+ * count on driver start up and always subtract that base on
+ * on the first update, thus the flag..
+ */
+ struct e1000_vf_stats stats;
+ u64 zero_base;
+
+ struct igbvf_ring test_tx_ring;
+ struct igbvf_ring test_rx_ring;
+ u32 test_icr;
+
+ u32 msg_enable;
+ struct msix_entry *msix_entries;
+ int int_mode;
+ u32 eims_enable_mask;
+ u32 eims_other;
+ u32 int_counter0;
+ u32 int_counter1;
+
+ u32 eeprom_wol;
+ u32 wol;
+ u32 pba;
+
+ bool fc_autoneg;
+
+ unsigned long led_status;
+
+ unsigned int flags;
+ unsigned long last_reset;
+};
+
+struct igbvf_info {
+ enum e1000_mac_type mac;
+ unsigned int flags;
+ u32 pba;
+ void (*init_ops)(struct e1000_hw *);
+ s32 (*get_variants)(struct igbvf_adapter *);
+};
+
+/* hardware capability, feature, and workaround flags */
+#define IGBVF_FLAG_RX_CSUM_DISABLED (1 << 0)
+#define IGBVF_FLAG_RX_LB_VLAN_BSWAP (1 << 1)
+#define IGBVF_RX_DESC_ADV(R, i) \
+ (&((((R).desc))[i].rx_desc))
+#define IGBVF_TX_DESC_ADV(R, i) \
+ (&((((R).desc))[i].tx_desc))
+#define IGBVF_TX_CTXTDESC_ADV(R, i) \
+ (&((((R).desc))[i].tx_context_desc))
+
+enum igbvf_state_t {
+ __IGBVF_TESTING,
+ __IGBVF_RESETTING,
+ __IGBVF_DOWN
+};
+
+extern char igbvf_driver_name[];
+extern const char igbvf_driver_version[];
+
+void igbvf_check_options(struct igbvf_adapter *);
+void igbvf_set_ethtool_ops(struct net_device *);
+
+int igbvf_up(struct igbvf_adapter *);
+void igbvf_down(struct igbvf_adapter *);
+void igbvf_reinit_locked(struct igbvf_adapter *);
+int igbvf_setup_rx_resources(struct igbvf_adapter *, struct igbvf_ring *);
+int igbvf_setup_tx_resources(struct igbvf_adapter *, struct igbvf_ring *);
+void igbvf_free_rx_resources(struct igbvf_ring *);
+void igbvf_free_tx_resources(struct igbvf_ring *);
+void igbvf_update_stats(struct igbvf_adapter *);
+
+extern unsigned int copybreak;
+
+#endif /* _IGBVF_H_ */
diff --git a/drivers/net/ethernet/intel/igbvf/mbx.c b/drivers/net/ethernet/intel/igbvf/mbx.c
new file mode 100644
index 0000000..7b6cb4c
--- /dev/null
+++ b/drivers/net/ethernet/intel/igbvf/mbx.c
@@ -0,0 +1,349 @@
+/*******************************************************************************
+
+ Intel(R) 82576 Virtual Function Linux driver
+ Copyright(c) 2009 - 2012 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#include "mbx.h"
+
+/**
+ * e1000_poll_for_msg - Wait for message notification
+ * @hw: pointer to the HW structure
+ *
+ * returns SUCCESS if it successfully received a message notification
+ **/
+static s32 e1000_poll_for_msg(struct e1000_hw *hw)
+{
+ struct e1000_mbx_info *mbx = &hw->mbx;
+ int countdown = mbx->timeout;
+
+ if (!mbx->ops.check_for_msg)
+ goto out;
+
+ while (countdown && mbx->ops.check_for_msg(hw)) {
+ countdown--;
+ udelay(mbx->usec_delay);
+ }
+
+ /* if we failed, all future posted messages fail until reset */
+ if (!countdown)
+ mbx->timeout = 0;
+out:
+ return countdown ? E1000_SUCCESS : -E1000_ERR_MBX;
+}
+
+/**
+ * e1000_poll_for_ack - Wait for message acknowledgment
+ * @hw: pointer to the HW structure
+ *
+ * returns SUCCESS if it successfully received a message acknowledgment
+ **/
+static s32 e1000_poll_for_ack(struct e1000_hw *hw)
+{
+ struct e1000_mbx_info *mbx = &hw->mbx;
+ int countdown = mbx->timeout;
+
+ if (!mbx->ops.check_for_ack)
+ goto out;
+
+ while (countdown && mbx->ops.check_for_ack(hw)) {
+ countdown--;
+ udelay(mbx->usec_delay);
+ }
+
+ /* if we failed, all future posted messages fail until reset */
+ if (!countdown)
+ mbx->timeout = 0;
+out:
+ return countdown ? E1000_SUCCESS : -E1000_ERR_MBX;
+}
+
+/**
+ * e1000_read_posted_mbx - Wait for message notification and receive message
+ * @hw: pointer to the HW structure
+ * @msg: The message buffer
+ * @size: Length of buffer
+ *
+ * returns SUCCESS if it successfully received a message notification and
+ * copied it into the receive buffer.
+ **/
+static s32 e1000_read_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size)
+{
+ struct e1000_mbx_info *mbx = &hw->mbx;
+ s32 ret_val = -E1000_ERR_MBX;
+
+ if (!mbx->ops.read)
+ goto out;
+
+ ret_val = e1000_poll_for_msg(hw);
+
+ /* if ack received read message, otherwise we timed out */
+ if (!ret_val)
+ ret_val = mbx->ops.read(hw, msg, size);
+out:
+ return ret_val;
+}
+
+/**
+ * e1000_write_posted_mbx - Write a message to the mailbox, wait for ack
+ * @hw: pointer to the HW structure
+ * @msg: The message buffer
+ * @size: Length of buffer
+ *
+ * returns SUCCESS if it successfully copied message into the buffer and
+ * received an ack to that message within delay * timeout period
+ **/
+static s32 e1000_write_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size)
+{
+ struct e1000_mbx_info *mbx = &hw->mbx;
+ s32 ret_val = -E1000_ERR_MBX;
+
+ /* exit if we either can't write or there isn't a defined timeout */
+ if (!mbx->ops.write || !mbx->timeout)
+ goto out;
+
+ /* send msg*/
+ ret_val = mbx->ops.write(hw, msg, size);
+
+ /* if msg sent wait until we receive an ack */
+ if (!ret_val)
+ ret_val = e1000_poll_for_ack(hw);
+out:
+ return ret_val;
+}
+
+/**
+ * e1000_read_v2p_mailbox - read v2p mailbox
+ * @hw: pointer to the HW structure
+ *
+ * This function is used to read the v2p mailbox without losing the read to
+ * clear status bits.
+ **/
+static u32 e1000_read_v2p_mailbox(struct e1000_hw *hw)
+{
+ u32 v2p_mailbox = er32(V2PMAILBOX(0));
+
+ v2p_mailbox |= hw->dev_spec.vf.v2p_mailbox;
+ hw->dev_spec.vf.v2p_mailbox |= v2p_mailbox & E1000_V2PMAILBOX_R2C_BITS;
+
+ return v2p_mailbox;
+}
+
+/**
+ * e1000_check_for_bit_vf - Determine if a status bit was set
+ * @hw: pointer to the HW structure
+ * @mask: bitmask for bits to be tested and cleared
+ *
+ * This function is used to check for the read to clear bits within
+ * the V2P mailbox.
+ **/
+static s32 e1000_check_for_bit_vf(struct e1000_hw *hw, u32 mask)
+{
+ u32 v2p_mailbox = e1000_read_v2p_mailbox(hw);
+ s32 ret_val = -E1000_ERR_MBX;
+
+ if (v2p_mailbox & mask)
+ ret_val = E1000_SUCCESS;
+
+ hw->dev_spec.vf.v2p_mailbox &= ~mask;
+
+ return ret_val;
+}
+
+/**
+ * e1000_check_for_msg_vf - checks to see if the PF has sent mail
+ * @hw: pointer to the HW structure
+ *
+ * returns SUCCESS if the PF has set the Status bit or else ERR_MBX
+ **/
+static s32 e1000_check_for_msg_vf(struct e1000_hw *hw)
+{
+ s32 ret_val = -E1000_ERR_MBX;
+
+ if (!e1000_check_for_bit_vf(hw, E1000_V2PMAILBOX_PFSTS)) {
+ ret_val = E1000_SUCCESS;
+ hw->mbx.stats.reqs++;
+ }
+
+ return ret_val;
+}
+
+/**
+ * e1000_check_for_ack_vf - checks to see if the PF has ACK'd
+ * @hw: pointer to the HW structure
+ *
+ * returns SUCCESS if the PF has set the ACK bit or else ERR_MBX
+ **/
+static s32 e1000_check_for_ack_vf(struct e1000_hw *hw)
+{
+ s32 ret_val = -E1000_ERR_MBX;
+
+ if (!e1000_check_for_bit_vf(hw, E1000_V2PMAILBOX_PFACK)) {
+ ret_val = E1000_SUCCESS;
+ hw->mbx.stats.acks++;
+ }
+
+ return ret_val;
+}
+
+/**
+ * e1000_check_for_rst_vf - checks to see if the PF has reset
+ * @hw: pointer to the HW structure
+ *
+ * returns true if the PF has set the reset done bit or else false
+ **/
+static s32 e1000_check_for_rst_vf(struct e1000_hw *hw)
+{
+ s32 ret_val = -E1000_ERR_MBX;
+
+ if (!e1000_check_for_bit_vf(hw, (E1000_V2PMAILBOX_RSTD |
+ E1000_V2PMAILBOX_RSTI))) {
+ ret_val = E1000_SUCCESS;
+ hw->mbx.stats.rsts++;
+ }
+
+ return ret_val;
+}
+
+/**
+ * e1000_obtain_mbx_lock_vf - obtain mailbox lock
+ * @hw: pointer to the HW structure
+ *
+ * return SUCCESS if we obtained the mailbox lock
+ **/
+static s32 e1000_obtain_mbx_lock_vf(struct e1000_hw *hw)
+{
+ s32 ret_val = -E1000_ERR_MBX;
+
+ /* Take ownership of the buffer */
+ ew32(V2PMAILBOX(0), E1000_V2PMAILBOX_VFU);
+
+ /* reserve mailbox for VF use */
+ if (e1000_read_v2p_mailbox(hw) & E1000_V2PMAILBOX_VFU)
+ ret_val = E1000_SUCCESS;
+
+ return ret_val;
+}
+
+/**
+ * e1000_write_mbx_vf - Write a message to the mailbox
+ * @hw: pointer to the HW structure
+ * @msg: The message buffer
+ * @size: Length of buffer
+ *
+ * returns SUCCESS if it successfully copied message into the buffer
+ **/
+static s32 e1000_write_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size)
+{
+ s32 err;
+ u16 i;
+
+ /* lock the mailbox to prevent pf/vf race condition */
+ err = e1000_obtain_mbx_lock_vf(hw);
+ if (err)
+ goto out_no_write;
+
+ /* flush any ack or msg as we are going to overwrite mailbox */
+ e1000_check_for_ack_vf(hw);
+ e1000_check_for_msg_vf(hw);
+
+ /* copy the caller specified message to the mailbox memory buffer */
+ for (i = 0; i < size; i++)
+ array_ew32(VMBMEM(0), i, msg[i]);
+
+ /* update stats */
+ hw->mbx.stats.msgs_tx++;
+
+ /* Drop VFU and interrupt the PF to tell it a message has been sent */
+ ew32(V2PMAILBOX(0), E1000_V2PMAILBOX_REQ);
+
+out_no_write:
+ return err;
+}
+
+/**
+ * e1000_read_mbx_vf - Reads a message from the inbox intended for VF
+ * @hw: pointer to the HW structure
+ * @msg: The message buffer
+ * @size: Length of buffer
+ *
+ * returns SUCCESS if it successfully read message from buffer
+ **/
+static s32 e1000_read_mbx_vf(struct e1000_hw *hw, u32 *msg, u16 size)
+{
+ s32 err;
+ u16 i;
+
+ /* lock the mailbox to prevent pf/vf race condition */
+ err = e1000_obtain_mbx_lock_vf(hw);
+ if (err)
+ goto out_no_read;
+
+ /* copy the message from the mailbox memory buffer */
+ for (i = 0; i < size; i++)
+ msg[i] = array_er32(VMBMEM(0), i);
+
+ /* Acknowledge receipt and release mailbox, then we're done */
+ ew32(V2PMAILBOX(0), E1000_V2PMAILBOX_ACK);
+
+ /* update stats */
+ hw->mbx.stats.msgs_rx++;
+
+out_no_read:
+ return err;
+}
+
+/**
+ * e1000_init_mbx_params_vf - set initial values for VF mailbox
+ * @hw: pointer to the HW structure
+ *
+ * Initializes the hw->mbx struct to correct values for VF mailbox
+ */
+s32 e1000_init_mbx_params_vf(struct e1000_hw *hw)
+{
+ struct e1000_mbx_info *mbx = &hw->mbx;
+
+ /* start mailbox as timed out and let the reset_hw call set the timeout
+ * value to being communications
+ */
+ mbx->timeout = 0;
+ mbx->usec_delay = E1000_VF_MBX_INIT_DELAY;
+
+ mbx->size = E1000_VFMAILBOX_SIZE;
+
+ mbx->ops.read = e1000_read_mbx_vf;
+ mbx->ops.write = e1000_write_mbx_vf;
+ mbx->ops.read_posted = e1000_read_posted_mbx;
+ mbx->ops.write_posted = e1000_write_posted_mbx;
+ mbx->ops.check_for_msg = e1000_check_for_msg_vf;
+ mbx->ops.check_for_ack = e1000_check_for_ack_vf;
+ mbx->ops.check_for_rst = e1000_check_for_rst_vf;
+
+ mbx->stats.msgs_tx = 0;
+ mbx->stats.msgs_rx = 0;
+ mbx->stats.reqs = 0;
+ mbx->stats.acks = 0;
+ mbx->stats.rsts = 0;
+
+ return E1000_SUCCESS;
+}
diff --git a/drivers/net/ethernet/intel/igbvf/mbx.h b/drivers/net/ethernet/intel/igbvf/mbx.h
new file mode 100644
index 0000000..f800bf8
--- /dev/null
+++ b/drivers/net/ethernet/intel/igbvf/mbx.h
@@ -0,0 +1,74 @@
+/*******************************************************************************
+
+ Intel(R) 82576 Virtual Function Linux driver
+ Copyright(c) 1999 - 2012 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#ifndef _E1000_MBX_H_
+#define _E1000_MBX_H_
+
+#include "vf.h"
+
+#define E1000_V2PMAILBOX_REQ 0x00000001 /* Request for PF Ready bit */
+#define E1000_V2PMAILBOX_ACK 0x00000002 /* Ack PF message received */
+#define E1000_V2PMAILBOX_VFU 0x00000004 /* VF owns the mailbox buffer */
+#define E1000_V2PMAILBOX_PFU 0x00000008 /* PF owns the mailbox buffer */
+#define E1000_V2PMAILBOX_PFSTS 0x00000010 /* PF wrote a message in the MB */
+#define E1000_V2PMAILBOX_PFACK 0x00000020 /* PF ack the previous VF msg */
+#define E1000_V2PMAILBOX_RSTI 0x00000040 /* PF has reset indication */
+#define E1000_V2PMAILBOX_RSTD 0x00000080 /* PF has indicated reset done */
+#define E1000_V2PMAILBOX_R2C_BITS 0x000000B0 /* All read to clear bits */
+
+#define E1000_VFMAILBOX_SIZE 16 /* 16 32 bit words - 64 bytes */
+
+/* If it's a E1000_VF_* msg then it originates in the VF and is sent to the
+ * PF. The reverse is true if it is E1000_PF_*.
+ * Message ACK's are the value or'd with 0xF0000000
+ */
+/* Messages below or'd with this are the ACK */
+#define E1000_VT_MSGTYPE_ACK 0x80000000
+/* Messages below or'd with this are the NACK */
+#define E1000_VT_MSGTYPE_NACK 0x40000000
+/* Indicates that VF is still clear to send requests */
+#define E1000_VT_MSGTYPE_CTS 0x20000000
+
+/* We have a total wait time of 1s for vf mailbox posted messages */
+#define E1000_VF_MBX_INIT_TIMEOUT 2000 /* retry count for mbx timeout */
+#define E1000_VF_MBX_INIT_DELAY 500 /* usec delay between retries */
+
+#define E1000_VT_MSGINFO_SHIFT 16
+/* bits 23:16 are used for exra info for certain messages */
+#define E1000_VT_MSGINFO_MASK (0xFF << E1000_VT_MSGINFO_SHIFT)
+
+#define E1000_VF_RESET 0x01 /* VF requests reset */
+#define E1000_VF_SET_MAC_ADDR 0x02 /* VF requests PF to set MAC addr */
+#define E1000_VF_SET_MULTICAST 0x03 /* VF requests PF to set MC addr */
+#define E1000_VF_SET_VLAN 0x04 /* VF requests PF to set VLAN */
+#define E1000_VF_SET_LPE 0x05 /* VF requests PF to set VMOLR.LPE */
+
+#define E1000_PF_CONTROL_MSG 0x0100 /* PF control message */
+
+void e1000_init_mbx_ops_generic(struct e1000_hw *hw);
+s32 e1000_init_mbx_params_vf(struct e1000_hw *);
+
+#endif /* _E1000_MBX_H_ */
diff --git a/drivers/net/ethernet/intel/igbvf/netdev.c b/drivers/net/ethernet/intel/igbvf/netdev.c
new file mode 100644
index 0000000..297af80
--- /dev/null
+++ b/drivers/net/ethernet/intel/igbvf/netdev.c
@@ -0,0 +1,2922 @@
+/*******************************************************************************
+
+ Intel(R) 82576 Virtual Function Linux driver
+ Copyright(c) 2009 - 2012 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/vmalloc.h>
+#include <linux/pagemap.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/tcp.h>
+#include <linux/ipv6.h>
+#include <linux/slab.h>
+#include <net/checksum.h>
+#include <net/ip6_checksum.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/prefetch.h>
+
+#include "igbvf.h"
+
+#define DRV_VERSION "2.0.2-k"
+char igbvf_driver_name[] = "igbvf";
+const char igbvf_driver_version[] = DRV_VERSION;
+static const char igbvf_driver_string[] =
+ "Intel(R) Gigabit Virtual Function Network Driver";
+static const char igbvf_copyright[] =
+ "Copyright (c) 2009 - 2012 Intel Corporation.";
+
+#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
+static int debug = -1;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
+
+static int igbvf_poll(struct napi_struct *napi, int budget);
+static void igbvf_reset(struct igbvf_adapter *);
+static void igbvf_set_interrupt_capability(struct igbvf_adapter *);
+static void igbvf_reset_interrupt_capability(struct igbvf_adapter *);
+
+static struct igbvf_info igbvf_vf_info = {
+ .mac = e1000_vfadapt,
+ .flags = 0,
+ .pba = 10,
+ .init_ops = e1000_init_function_pointers_vf,
+};
+
+static struct igbvf_info igbvf_i350_vf_info = {
+ .mac = e1000_vfadapt_i350,
+ .flags = 0,
+ .pba = 10,
+ .init_ops = e1000_init_function_pointers_vf,
+};
+
+static const struct igbvf_info *igbvf_info_tbl[] = {
+ [board_vf] = &igbvf_vf_info,
+ [board_i350_vf] = &igbvf_i350_vf_info,
+};
+
+/**
+ * igbvf_desc_unused - calculate if we have unused descriptors
+ * @rx_ring: address of receive ring structure
+ **/
+static int igbvf_desc_unused(struct igbvf_ring *ring)
+{
+ if (ring->next_to_clean > ring->next_to_use)
+ return ring->next_to_clean - ring->next_to_use - 1;
+
+ return ring->count + ring->next_to_clean - ring->next_to_use - 1;
+}
+
+/**
+ * igbvf_receive_skb - helper function to handle Rx indications
+ * @adapter: board private structure
+ * @status: descriptor status field as written by hardware
+ * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
+ * @skb: pointer to sk_buff to be indicated to stack
+ **/
+static void igbvf_receive_skb(struct igbvf_adapter *adapter,
+ struct net_device *netdev,
+ struct sk_buff *skb,
+ u32 status, u16 vlan)
+{
+ u16 vid;
+
+ if (status & E1000_RXD_STAT_VP) {
+ if ((adapter->flags & IGBVF_FLAG_RX_LB_VLAN_BSWAP) &&
+ (status & E1000_RXDEXT_STATERR_LB))
+ vid = be16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK;
+ else
+ vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK;
+ if (test_bit(vid, adapter->active_vlans))
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
+ }
+
+ napi_gro_receive(&adapter->rx_ring->napi, skb);
+}
+
+static inline void igbvf_rx_checksum_adv(struct igbvf_adapter *adapter,
+ u32 status_err, struct sk_buff *skb)
+{
+ skb_checksum_none_assert(skb);
+
+ /* Ignore Checksum bit is set or checksum is disabled through ethtool */
+ if ((status_err & E1000_RXD_STAT_IXSM) ||
+ (adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED))
+ return;
+
+ /* TCP/UDP checksum error bit is set */
+ if (status_err &
+ (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) {
+ /* let the stack verify checksum errors */
+ adapter->hw_csum_err++;
+ return;
+ }
+
+ /* It must be a TCP or UDP packet with a valid checksum */
+ if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ adapter->hw_csum_good++;
+}
+
+/**
+ * igbvf_alloc_rx_buffers - Replace used receive buffers; packet split
+ * @rx_ring: address of ring structure to repopulate
+ * @cleaned_count: number of buffers to repopulate
+ **/
+static void igbvf_alloc_rx_buffers(struct igbvf_ring *rx_ring,
+ int cleaned_count)
+{
+ struct igbvf_adapter *adapter = rx_ring->adapter;
+ struct net_device *netdev = adapter->netdev;
+ struct pci_dev *pdev = adapter->pdev;
+ union e1000_adv_rx_desc *rx_desc;
+ struct igbvf_buffer *buffer_info;
+ struct sk_buff *skb;
+ unsigned int i;
+ int bufsz;
+
+ i = rx_ring->next_to_use;
+ buffer_info = &rx_ring->buffer_info[i];
+
+ if (adapter->rx_ps_hdr_size)
+ bufsz = adapter->rx_ps_hdr_size;
+ else
+ bufsz = adapter->rx_buffer_len;
+
+ while (cleaned_count--) {
+ rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i);
+
+ if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) {
+ if (!buffer_info->page) {
+ buffer_info->page = alloc_page(GFP_ATOMIC);
+ if (!buffer_info->page) {
+ adapter->alloc_rx_buff_failed++;
+ goto no_buffers;
+ }
+ buffer_info->page_offset = 0;
+ } else {
+ buffer_info->page_offset ^= PAGE_SIZE / 2;
+ }
+ buffer_info->page_dma =
+ dma_map_page(&pdev->dev, buffer_info->page,
+ buffer_info->page_offset,
+ PAGE_SIZE / 2,
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(&pdev->dev,
+ buffer_info->page_dma)) {
+ __free_page(buffer_info->page);
+ buffer_info->page = NULL;
+ dev_err(&pdev->dev, "RX DMA map failed\n");
+ break;
+ }
+ }
+
+ if (!buffer_info->skb) {
+ skb = netdev_alloc_skb_ip_align(netdev, bufsz);
+ if (!skb) {
+ adapter->alloc_rx_buff_failed++;
+ goto no_buffers;
+ }
+
+ buffer_info->skb = skb;
+ buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
+ bufsz,
+ DMA_FROM_DEVICE);
+ if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
+ dev_kfree_skb(buffer_info->skb);
+ buffer_info->skb = NULL;
+ dev_err(&pdev->dev, "RX DMA map failed\n");
+ goto no_buffers;
+ }
+ }
+ /* Refresh the desc even if buffer_addrs didn't change because
+ * each write-back erases this info.
+ */
+ if (adapter->rx_ps_hdr_size) {
+ rx_desc->read.pkt_addr =
+ cpu_to_le64(buffer_info->page_dma);
+ rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma);
+ } else {
+ rx_desc->read.pkt_addr = cpu_to_le64(buffer_info->dma);
+ rx_desc->read.hdr_addr = 0;
+ }
+
+ i++;
+ if (i == rx_ring->count)
+ i = 0;
+ buffer_info = &rx_ring->buffer_info[i];
+ }
+
+no_buffers:
+ if (rx_ring->next_to_use != i) {
+ rx_ring->next_to_use = i;
+ if (i == 0)
+ i = (rx_ring->count - 1);
+ else
+ i--;
+
+ /* Force memory writes to complete before letting h/w
+ * know there are new descriptors to fetch. (Only
+ * applicable for weak-ordered memory model archs,
+ * such as IA-64).
+ */
+ wmb();
+ writel(i, adapter->hw.hw_addr + rx_ring->tail);
+ }
+}
+
+/**
+ * igbvf_clean_rx_irq - Send received data up the network stack; legacy
+ * @adapter: board private structure
+ *
+ * the return value indicates whether actual cleaning was done, there
+ * is no guarantee that everything was cleaned
+ **/
+static bool igbvf_clean_rx_irq(struct igbvf_adapter *adapter,
+ int *work_done, int work_to_do)
+{
+ struct igbvf_ring *rx_ring = adapter->rx_ring;
+ struct net_device *netdev = adapter->netdev;
+ struct pci_dev *pdev = adapter->pdev;
+ union e1000_adv_rx_desc *rx_desc, *next_rxd;
+ struct igbvf_buffer *buffer_info, *next_buffer;
+ struct sk_buff *skb;
+ bool cleaned = false;
+ int cleaned_count = 0;
+ unsigned int total_bytes = 0, total_packets = 0;
+ unsigned int i;
+ u32 length, hlen, staterr;
+
+ i = rx_ring->next_to_clean;
+ rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i);
+ staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+
+ while (staterr & E1000_RXD_STAT_DD) {
+ if (*work_done >= work_to_do)
+ break;
+ (*work_done)++;
+ rmb(); /* read descriptor and rx_buffer_info after status DD */
+
+ buffer_info = &rx_ring->buffer_info[i];
+
+ /* HW will not DMA in data larger than the given buffer, even
+ * if it parses the (NFS, of course) header to be larger. In
+ * that case, it fills the header buffer and spills the rest
+ * into the page.
+ */
+ hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info)
+ & E1000_RXDADV_HDRBUFLEN_MASK) >>
+ E1000_RXDADV_HDRBUFLEN_SHIFT;
+ if (hlen > adapter->rx_ps_hdr_size)
+ hlen = adapter->rx_ps_hdr_size;
+
+ length = le16_to_cpu(rx_desc->wb.upper.length);
+ cleaned = true;
+ cleaned_count++;
+
+ skb = buffer_info->skb;
+ prefetch(skb->data - NET_IP_ALIGN);
+ buffer_info->skb = NULL;
+ if (!adapter->rx_ps_hdr_size) {
+ dma_unmap_single(&pdev->dev, buffer_info->dma,
+ adapter->rx_buffer_len,
+ DMA_FROM_DEVICE);
+ buffer_info->dma = 0;
+ skb_put(skb, length);
+ goto send_up;
+ }
+
+ if (!skb_shinfo(skb)->nr_frags) {
+ dma_unmap_single(&pdev->dev, buffer_info->dma,
+ adapter->rx_ps_hdr_size,
+ DMA_FROM_DEVICE);
+ buffer_info->dma = 0;
+ skb_put(skb, hlen);
+ }
+
+ if (length) {
+ dma_unmap_page(&pdev->dev, buffer_info->page_dma,
+ PAGE_SIZE / 2,
+ DMA_FROM_DEVICE);
+ buffer_info->page_dma = 0;
+
+ skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags,
+ buffer_info->page,
+ buffer_info->page_offset,
+ length);
+
+ if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) ||
+ (page_count(buffer_info->page) != 1))
+ buffer_info->page = NULL;
+ else
+ get_page(buffer_info->page);
+
+ skb->len += length;
+ skb->data_len += length;
+ skb->truesize += PAGE_SIZE / 2;
+ }
+send_up:
+ i++;
+ if (i == rx_ring->count)
+ i = 0;
+ next_rxd = IGBVF_RX_DESC_ADV(*rx_ring, i);
+ prefetch(next_rxd);
+ next_buffer = &rx_ring->buffer_info[i];
+
+ if (!(staterr & E1000_RXD_STAT_EOP)) {
+ buffer_info->skb = next_buffer->skb;
+ buffer_info->dma = next_buffer->dma;
+ next_buffer->skb = skb;
+ next_buffer->dma = 0;
+ goto next_desc;
+ }
+
+ if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
+ dev_kfree_skb_irq(skb);
+ goto next_desc;
+ }
+
+ total_bytes += skb->len;
+ total_packets++;
+
+ igbvf_rx_checksum_adv(adapter, staterr, skb);
+
+ skb->protocol = eth_type_trans(skb, netdev);
+
+ igbvf_receive_skb(adapter, netdev, skb, staterr,
+ rx_desc->wb.upper.vlan);
+
+next_desc:
+ rx_desc->wb.upper.status_error = 0;
+
+ /* return some buffers to hardware, one at a time is too slow */
+ if (cleaned_count >= IGBVF_RX_BUFFER_WRITE) {
+ igbvf_alloc_rx_buffers(rx_ring, cleaned_count);
+ cleaned_count = 0;
+ }
+
+ /* use prefetched values */
+ rx_desc = next_rxd;
+ buffer_info = next_buffer;
+
+ staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+ }
+
+ rx_ring->next_to_clean = i;
+ cleaned_count = igbvf_desc_unused(rx_ring);
+
+ if (cleaned_count)
+ igbvf_alloc_rx_buffers(rx_ring, cleaned_count);
+
+ adapter->total_rx_packets += total_packets;
+ adapter->total_rx_bytes += total_bytes;
+ adapter->net_stats.rx_bytes += total_bytes;
+ adapter->net_stats.rx_packets += total_packets;
+ return cleaned;
+}
+
+static void igbvf_put_txbuf(struct igbvf_adapter *adapter,
+ struct igbvf_buffer *buffer_info)
+{
+ if (buffer_info->dma) {
+ if (buffer_info->mapped_as_page)
+ dma_unmap_page(&adapter->pdev->dev,
+ buffer_info->dma,
+ buffer_info->length,
+ DMA_TO_DEVICE);
+ else
+ dma_unmap_single(&adapter->pdev->dev,
+ buffer_info->dma,
+ buffer_info->length,
+ DMA_TO_DEVICE);
+ buffer_info->dma = 0;
+ }
+ if (buffer_info->skb) {
+ dev_kfree_skb_any(buffer_info->skb);
+ buffer_info->skb = NULL;
+ }
+ buffer_info->time_stamp = 0;
+}
+
+/**
+ * igbvf_setup_tx_resources - allocate Tx resources (Descriptors)
+ * @adapter: board private structure
+ *
+ * Return 0 on success, negative on failure
+ **/
+int igbvf_setup_tx_resources(struct igbvf_adapter *adapter,
+ struct igbvf_ring *tx_ring)
+{
+ struct pci_dev *pdev = adapter->pdev;
+ int size;
+
+ size = sizeof(struct igbvf_buffer) * tx_ring->count;
+ tx_ring->buffer_info = vzalloc(size);
+ if (!tx_ring->buffer_info)
+ goto err;
+
+ /* round up to nearest 4K */
+ tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc);
+ tx_ring->size = ALIGN(tx_ring->size, 4096);
+
+ tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
+ &tx_ring->dma, GFP_KERNEL);
+ if (!tx_ring->desc)
+ goto err;
+
+ tx_ring->adapter = adapter;
+ tx_ring->next_to_use = 0;
+ tx_ring->next_to_clean = 0;
+
+ return 0;
+err:
+ vfree(tx_ring->buffer_info);
+ dev_err(&adapter->pdev->dev,
+ "Unable to allocate memory for the transmit descriptor ring\n");
+ return -ENOMEM;
+}
+
+/**
+ * igbvf_setup_rx_resources - allocate Rx resources (Descriptors)
+ * @adapter: board private structure
+ *
+ * Returns 0 on success, negative on failure
+ **/
+int igbvf_setup_rx_resources(struct igbvf_adapter *adapter,
+ struct igbvf_ring *rx_ring)
+{
+ struct pci_dev *pdev = adapter->pdev;
+ int size, desc_len;
+
+ size = sizeof(struct igbvf_buffer) * rx_ring->count;
+ rx_ring->buffer_info = vzalloc(size);
+ if (!rx_ring->buffer_info)
+ goto err;
+
+ desc_len = sizeof(union e1000_adv_rx_desc);
+
+ /* Round up to nearest 4K */
+ rx_ring->size = rx_ring->count * desc_len;
+ rx_ring->size = ALIGN(rx_ring->size, 4096);
+
+ rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
+ &rx_ring->dma, GFP_KERNEL);
+ if (!rx_ring->desc)
+ goto err;
+
+ rx_ring->next_to_clean = 0;
+ rx_ring->next_to_use = 0;
+
+ rx_ring->adapter = adapter;
+
+ return 0;
+
+err:
+ vfree(rx_ring->buffer_info);
+ rx_ring->buffer_info = NULL;
+ dev_err(&adapter->pdev->dev,
+ "Unable to allocate memory for the receive descriptor ring\n");
+ return -ENOMEM;
+}
+
+/**
+ * igbvf_clean_tx_ring - Free Tx Buffers
+ * @tx_ring: ring to be cleaned
+ **/
+static void igbvf_clean_tx_ring(struct igbvf_ring *tx_ring)
+{
+ struct igbvf_adapter *adapter = tx_ring->adapter;
+ struct igbvf_buffer *buffer_info;
+ unsigned long size;
+ unsigned int i;
+
+ if (!tx_ring->buffer_info)
+ return;
+
+ /* Free all the Tx ring sk_buffs */
+ for (i = 0; i < tx_ring->count; i++) {
+ buffer_info = &tx_ring->buffer_info[i];
+ igbvf_put_txbuf(adapter, buffer_info);
+ }
+
+ size = sizeof(struct igbvf_buffer) * tx_ring->count;
+ memset(tx_ring->buffer_info, 0, size);
+
+ /* Zero out the descriptor ring */
+ memset(tx_ring->desc, 0, tx_ring->size);
+
+ tx_ring->next_to_use = 0;
+ tx_ring->next_to_clean = 0;
+
+ writel(0, adapter->hw.hw_addr + tx_ring->head);
+ writel(0, adapter->hw.hw_addr + tx_ring->tail);
+}
+
+/**
+ * igbvf_free_tx_resources - Free Tx Resources per Queue
+ * @tx_ring: ring to free resources from
+ *
+ * Free all transmit software resources
+ **/
+void igbvf_free_tx_resources(struct igbvf_ring *tx_ring)
+{
+ struct pci_dev *pdev = tx_ring->adapter->pdev;
+
+ igbvf_clean_tx_ring(tx_ring);
+
+ vfree(tx_ring->buffer_info);
+ tx_ring->buffer_info = NULL;
+
+ dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
+ tx_ring->dma);
+
+ tx_ring->desc = NULL;
+}
+
+/**
+ * igbvf_clean_rx_ring - Free Rx Buffers per Queue
+ * @adapter: board private structure
+ **/
+static void igbvf_clean_rx_ring(struct igbvf_ring *rx_ring)
+{
+ struct igbvf_adapter *adapter = rx_ring->adapter;
+ struct igbvf_buffer *buffer_info;
+ struct pci_dev *pdev = adapter->pdev;
+ unsigned long size;
+ unsigned int i;
+
+ if (!rx_ring->buffer_info)
+ return;
+
+ /* Free all the Rx ring sk_buffs */
+ for (i = 0; i < rx_ring->count; i++) {
+ buffer_info = &rx_ring->buffer_info[i];
+ if (buffer_info->dma) {
+ if (adapter->rx_ps_hdr_size) {
+ dma_unmap_single(&pdev->dev, buffer_info->dma,
+ adapter->rx_ps_hdr_size,
+ DMA_FROM_DEVICE);
+ } else {
+ dma_unmap_single(&pdev->dev, buffer_info->dma,
+ adapter->rx_buffer_len,
+ DMA_FROM_DEVICE);
+ }
+ buffer_info->dma = 0;
+ }
+
+ if (buffer_info->skb) {
+ dev_kfree_skb(buffer_info->skb);
+ buffer_info->skb = NULL;
+ }
+
+ if (buffer_info->page) {
+ if (buffer_info->page_dma)
+ dma_unmap_page(&pdev->dev,
+ buffer_info->page_dma,
+ PAGE_SIZE / 2,
+ DMA_FROM_DEVICE);
+ put_page(buffer_info->page);
+ buffer_info->page = NULL;
+ buffer_info->page_dma = 0;
+ buffer_info->page_offset = 0;
+ }
+ }
+
+ size = sizeof(struct igbvf_buffer) * rx_ring->count;
+ memset(rx_ring->buffer_info, 0, size);
+
+ /* Zero out the descriptor ring */
+ memset(rx_ring->desc, 0, rx_ring->size);
+
+ rx_ring->next_to_clean = 0;
+ rx_ring->next_to_use = 0;
+
+ writel(0, adapter->hw.hw_addr + rx_ring->head);
+ writel(0, adapter->hw.hw_addr + rx_ring->tail);
+}
+
+/**
+ * igbvf_free_rx_resources - Free Rx Resources
+ * @rx_ring: ring to clean the resources from
+ *
+ * Free all receive software resources
+ **/
+
+void igbvf_free_rx_resources(struct igbvf_ring *rx_ring)
+{
+ struct pci_dev *pdev = rx_ring->adapter->pdev;
+
+ igbvf_clean_rx_ring(rx_ring);
+
+ vfree(rx_ring->buffer_info);
+ rx_ring->buffer_info = NULL;
+
+ dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
+ rx_ring->dma);
+ rx_ring->desc = NULL;
+}
+
+/**
+ * igbvf_update_itr - update the dynamic ITR value based on statistics
+ * @adapter: pointer to adapter
+ * @itr_setting: current adapter->itr
+ * @packets: the number of packets during this measurement interval
+ * @bytes: the number of bytes during this measurement interval
+ *
+ * Stores a new ITR value based on packets and byte counts during the last
+ * interrupt. The advantage of per interrupt computation is faster updates
+ * and more accurate ITR for the current traffic pattern. Constants in this
+ * function were computed based on theoretical maximum wire speed and thresholds
+ * were set based on testing data as well as attempting to minimize response
+ * time while increasing bulk throughput.
+ **/
+static enum latency_range igbvf_update_itr(struct igbvf_adapter *adapter,
+ enum latency_range itr_setting,
+ int packets, int bytes)
+{
+ enum latency_range retval = itr_setting;
+
+ if (packets == 0)
+ goto update_itr_done;
+
+ switch (itr_setting) {
+ case lowest_latency:
+ /* handle TSO and jumbo frames */
+ if (bytes/packets > 8000)
+ retval = bulk_latency;
+ else if ((packets < 5) && (bytes > 512))
+ retval = low_latency;
+ break;
+ case low_latency: /* 50 usec aka 20000 ints/s */
+ if (bytes > 10000) {
+ /* this if handles the TSO accounting */
+ if (bytes/packets > 8000)
+ retval = bulk_latency;
+ else if ((packets < 10) || ((bytes/packets) > 1200))
+ retval = bulk_latency;
+ else if ((packets > 35))
+ retval = lowest_latency;
+ } else if (bytes/packets > 2000) {
+ retval = bulk_latency;
+ } else if (packets <= 2 && bytes < 512) {
+ retval = lowest_latency;
+ }
+ break;
+ case bulk_latency: /* 250 usec aka 4000 ints/s */
+ if (bytes > 25000) {
+ if (packets > 35)
+ retval = low_latency;
+ } else if (bytes < 6000) {
+ retval = low_latency;
+ }
+ break;
+ default:
+ break;
+ }
+
+update_itr_done:
+ return retval;
+}
+
+static int igbvf_range_to_itr(enum latency_range current_range)
+{
+ int new_itr;
+
+ switch (current_range) {
+ /* counts and packets in update_itr are dependent on these numbers */
+ case lowest_latency:
+ new_itr = IGBVF_70K_ITR;
+ break;
+ case low_latency:
+ new_itr = IGBVF_20K_ITR;
+ break;
+ case bulk_latency:
+ new_itr = IGBVF_4K_ITR;
+ break;
+ default:
+ new_itr = IGBVF_START_ITR;
+ break;
+ }
+ return new_itr;
+}
+
+static void igbvf_set_itr(struct igbvf_adapter *adapter)
+{
+ u32 new_itr;
+
+ adapter->tx_ring->itr_range =
+ igbvf_update_itr(adapter,
+ adapter->tx_ring->itr_val,
+ adapter->total_tx_packets,
+ adapter->total_tx_bytes);
+
+ /* conservative mode (itr 3) eliminates the lowest_latency setting */
+ if (adapter->requested_itr == 3 &&
+ adapter->tx_ring->itr_range == lowest_latency)
+ adapter->tx_ring->itr_range = low_latency;
+
+ new_itr = igbvf_range_to_itr(adapter->tx_ring->itr_range);
+
+ if (new_itr != adapter->tx_ring->itr_val) {
+ u32 current_itr = adapter->tx_ring->itr_val;
+ /* this attempts to bias the interrupt rate towards Bulk
+ * by adding intermediate steps when interrupt rate is
+ * increasing
+ */
+ new_itr = new_itr > current_itr ?
+ min(current_itr + (new_itr >> 2), new_itr) :
+ new_itr;
+ adapter->tx_ring->itr_val = new_itr;
+
+ adapter->tx_ring->set_itr = 1;
+ }
+
+ adapter->rx_ring->itr_range =
+ igbvf_update_itr(adapter, adapter->rx_ring->itr_val,
+ adapter->total_rx_packets,
+ adapter->total_rx_bytes);
+ if (adapter->requested_itr == 3 &&
+ adapter->rx_ring->itr_range == lowest_latency)
+ adapter->rx_ring->itr_range = low_latency;
+
+ new_itr = igbvf_range_to_itr(adapter->rx_ring->itr_range);
+
+ if (new_itr != adapter->rx_ring->itr_val) {
+ u32 current_itr = adapter->rx_ring->itr_val;
+
+ new_itr = new_itr > current_itr ?
+ min(current_itr + (new_itr >> 2), new_itr) :
+ new_itr;
+ adapter->rx_ring->itr_val = new_itr;
+
+ adapter->rx_ring->set_itr = 1;
+ }
+}
+
+/**
+ * igbvf_clean_tx_irq - Reclaim resources after transmit completes
+ * @adapter: board private structure
+ *
+ * returns true if ring is completely cleaned
+ **/
+static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring)
+{
+ struct igbvf_adapter *adapter = tx_ring->adapter;
+ struct net_device *netdev = adapter->netdev;
+ struct igbvf_buffer *buffer_info;
+ struct sk_buff *skb;
+ union e1000_adv_tx_desc *tx_desc, *eop_desc;
+ unsigned int total_bytes = 0, total_packets = 0;
+ unsigned int i, count = 0;
+ bool cleaned = false;
+
+ i = tx_ring->next_to_clean;
+ buffer_info = &tx_ring->buffer_info[i];
+ eop_desc = buffer_info->next_to_watch;
+
+ do {
+ /* if next_to_watch is not set then there is no work pending */
+ if (!eop_desc)
+ break;
+
+ /* prevent any other reads prior to eop_desc */
+ read_barrier_depends();
+
+ /* if DD is not set pending work has not been completed */
+ if (!(eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)))
+ break;
+
+ /* clear next_to_watch to prevent false hangs */
+ buffer_info->next_to_watch = NULL;
+
+ for (cleaned = false; !cleaned; count++) {
+ tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
+ cleaned = (tx_desc == eop_desc);
+ skb = buffer_info->skb;
+
+ if (skb) {
+ unsigned int segs, bytecount;
+
+ /* gso_segs is currently only valid for tcp */
+ segs = skb_shinfo(skb)->gso_segs ?: 1;
+ /* multiply data chunks by size of headers */
+ bytecount = ((segs - 1) * skb_headlen(skb)) +
+ skb->len;
+ total_packets += segs;
+ total_bytes += bytecount;
+ }
+
+ igbvf_put_txbuf(adapter, buffer_info);
+ tx_desc->wb.status = 0;
+
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+
+ buffer_info = &tx_ring->buffer_info[i];
+ }
+
+ eop_desc = buffer_info->next_to_watch;
+ } while (count < tx_ring->count);
+
+ tx_ring->next_to_clean = i;
+
+ if (unlikely(count && netif_carrier_ok(netdev) &&
+ igbvf_desc_unused(tx_ring) >= IGBVF_TX_QUEUE_WAKE)) {
+ /* Make sure that anybody stopping the queue after this
+ * sees the new next_to_clean.
+ */
+ smp_mb();
+ if (netif_queue_stopped(netdev) &&
+ !(test_bit(__IGBVF_DOWN, &adapter->state))) {
+ netif_wake_queue(netdev);
+ ++adapter->restart_queue;
+ }
+ }
+
+ adapter->net_stats.tx_bytes += total_bytes;
+ adapter->net_stats.tx_packets += total_packets;
+ return count < tx_ring->count;
+}
+
+static irqreturn_t igbvf_msix_other(int irq, void *data)
+{
+ struct net_device *netdev = data;
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+
+ adapter->int_counter1++;
+
+ netif_carrier_off(netdev);
+ hw->mac.get_link_status = 1;
+ if (!test_bit(__IGBVF_DOWN, &adapter->state))
+ mod_timer(&adapter->watchdog_timer, jiffies + 1);
+
+ ew32(EIMS, adapter->eims_other);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t igbvf_intr_msix_tx(int irq, void *data)
+{
+ struct net_device *netdev = data;
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ struct igbvf_ring *tx_ring = adapter->tx_ring;
+
+ if (tx_ring->set_itr) {
+ writel(tx_ring->itr_val,
+ adapter->hw.hw_addr + tx_ring->itr_register);
+ adapter->tx_ring->set_itr = 0;
+ }
+
+ adapter->total_tx_bytes = 0;
+ adapter->total_tx_packets = 0;
+
+ /* auto mask will automatically re-enable the interrupt when we write
+ * EICS
+ */
+ if (!igbvf_clean_tx_irq(tx_ring))
+ /* Ring was not completely cleaned, so fire another interrupt */
+ ew32(EICS, tx_ring->eims_value);
+ else
+ ew32(EIMS, tx_ring->eims_value);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t igbvf_intr_msix_rx(int irq, void *data)
+{
+ struct net_device *netdev = data;
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ adapter->int_counter0++;
+
+ /* Write the ITR value calculated at the end of the
+ * previous interrupt.
+ */
+ if (adapter->rx_ring->set_itr) {
+ writel(adapter->rx_ring->itr_val,
+ adapter->hw.hw_addr + adapter->rx_ring->itr_register);
+ adapter->rx_ring->set_itr = 0;
+ }
+
+ if (napi_schedule_prep(&adapter->rx_ring->napi)) {
+ adapter->total_rx_bytes = 0;
+ adapter->total_rx_packets = 0;
+ __napi_schedule(&adapter->rx_ring->napi);
+ }
+
+ return IRQ_HANDLED;
+}
+
+#define IGBVF_NO_QUEUE -1
+
+static void igbvf_assign_vector(struct igbvf_adapter *adapter, int rx_queue,
+ int tx_queue, int msix_vector)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u32 ivar, index;
+
+ /* 82576 uses a table-based method for assigning vectors.
+ * Each queue has a single entry in the table to which we write
+ * a vector number along with a "valid" bit. Sadly, the layout
+ * of the table is somewhat counterintuitive.
+ */
+ if (rx_queue > IGBVF_NO_QUEUE) {
+ index = (rx_queue >> 1);
+ ivar = array_er32(IVAR0, index);
+ if (rx_queue & 0x1) {
+ /* vector goes into third byte of register */
+ ivar = ivar & 0xFF00FFFF;
+ ivar |= (msix_vector | E1000_IVAR_VALID) << 16;
+ } else {
+ /* vector goes into low byte of register */
+ ivar = ivar & 0xFFFFFF00;
+ ivar |= msix_vector | E1000_IVAR_VALID;
+ }
+ adapter->rx_ring[rx_queue].eims_value = 1 << msix_vector;
+ array_ew32(IVAR0, index, ivar);
+ }
+ if (tx_queue > IGBVF_NO_QUEUE) {
+ index = (tx_queue >> 1);
+ ivar = array_er32(IVAR0, index);
+ if (tx_queue & 0x1) {
+ /* vector goes into high byte of register */
+ ivar = ivar & 0x00FFFFFF;
+ ivar |= (msix_vector | E1000_IVAR_VALID) << 24;
+ } else {
+ /* vector goes into second byte of register */
+ ivar = ivar & 0xFFFF00FF;
+ ivar |= (msix_vector | E1000_IVAR_VALID) << 8;
+ }
+ adapter->tx_ring[tx_queue].eims_value = 1 << msix_vector;
+ array_ew32(IVAR0, index, ivar);
+ }
+}
+
+/**
+ * igbvf_configure_msix - Configure MSI-X hardware
+ * @adapter: board private structure
+ *
+ * igbvf_configure_msix sets up the hardware to properly
+ * generate MSI-X interrupts.
+ **/
+static void igbvf_configure_msix(struct igbvf_adapter *adapter)
+{
+ u32 tmp;
+ struct e1000_hw *hw = &adapter->hw;
+ struct igbvf_ring *tx_ring = adapter->tx_ring;
+ struct igbvf_ring *rx_ring = adapter->rx_ring;
+ int vector = 0;
+
+ adapter->eims_enable_mask = 0;
+
+ igbvf_assign_vector(adapter, IGBVF_NO_QUEUE, 0, vector++);
+ adapter->eims_enable_mask |= tx_ring->eims_value;
+ writel(tx_ring->itr_val, hw->hw_addr + tx_ring->itr_register);
+ igbvf_assign_vector(adapter, 0, IGBVF_NO_QUEUE, vector++);
+ adapter->eims_enable_mask |= rx_ring->eims_value;
+ writel(rx_ring->itr_val, hw->hw_addr + rx_ring->itr_register);
+
+ /* set vector for other causes, i.e. link changes */
+
+ tmp = (vector++ | E1000_IVAR_VALID);
+
+ ew32(IVAR_MISC, tmp);
+
+ adapter->eims_enable_mask = (1 << (vector)) - 1;
+ adapter->eims_other = 1 << (vector - 1);
+ e1e_flush();
+}
+
+static void igbvf_reset_interrupt_capability(struct igbvf_adapter *adapter)
+{
+ if (adapter->msix_entries) {
+ pci_disable_msix(adapter->pdev);
+ kfree(adapter->msix_entries);
+ adapter->msix_entries = NULL;
+ }
+}
+
+/**
+ * igbvf_set_interrupt_capability - set MSI or MSI-X if supported
+ * @adapter: board private structure
+ *
+ * Attempt to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+static void igbvf_set_interrupt_capability(struct igbvf_adapter *adapter)
+{
+ int err = -ENOMEM;
+ int i;
+
+ /* we allocate 3 vectors, 1 for Tx, 1 for Rx, one for PF messages */
+ adapter->msix_entries = kcalloc(3, sizeof(struct msix_entry),
+ GFP_KERNEL);
+ if (adapter->msix_entries) {
+ for (i = 0; i < 3; i++)
+ adapter->msix_entries[i].entry = i;
+
+ err = pci_enable_msix_range(adapter->pdev,
+ adapter->msix_entries, 3, 3);
+ }
+
+ if (err < 0) {
+ /* MSI-X failed */
+ dev_err(&adapter->pdev->dev,
+ "Failed to initialize MSI-X interrupts.\n");
+ igbvf_reset_interrupt_capability(adapter);
+ }
+}
+
+/**
+ * igbvf_request_msix - Initialize MSI-X interrupts
+ * @adapter: board private structure
+ *
+ * igbvf_request_msix allocates MSI-X vectors and requests interrupts from the
+ * kernel.
+ **/
+static int igbvf_request_msix(struct igbvf_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ int err = 0, vector = 0;
+
+ if (strlen(netdev->name) < (IFNAMSIZ - 5)) {
+ sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name);
+ sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name);
+ } else {
+ memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
+ memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
+ }
+
+ err = request_irq(adapter->msix_entries[vector].vector,
+ igbvf_intr_msix_tx, 0, adapter->tx_ring->name,
+ netdev);
+ if (err)
+ goto out;
+
+ adapter->tx_ring->itr_register = E1000_EITR(vector);
+ adapter->tx_ring->itr_val = adapter->current_itr;
+ vector++;
+
+ err = request_irq(adapter->msix_entries[vector].vector,
+ igbvf_intr_msix_rx, 0, adapter->rx_ring->name,
+ netdev);
+ if (err)
+ goto out;
+
+ adapter->rx_ring->itr_register = E1000_EITR(vector);
+ adapter->rx_ring->itr_val = adapter->current_itr;
+ vector++;
+
+ err = request_irq(adapter->msix_entries[vector].vector,
+ igbvf_msix_other, 0, netdev->name, netdev);
+ if (err)
+ goto out;
+
+ igbvf_configure_msix(adapter);
+ return 0;
+out:
+ return err;
+}
+
+/**
+ * igbvf_alloc_queues - Allocate memory for all rings
+ * @adapter: board private structure to initialize
+ **/
+static int igbvf_alloc_queues(struct igbvf_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+
+ adapter->tx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL);
+ if (!adapter->tx_ring)
+ return -ENOMEM;
+
+ adapter->rx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL);
+ if (!adapter->rx_ring) {
+ kfree(adapter->tx_ring);
+ return -ENOMEM;
+ }
+
+ netif_napi_add(netdev, &adapter->rx_ring->napi, igbvf_poll, 64);
+
+ return 0;
+}
+
+/**
+ * igbvf_request_irq - initialize interrupts
+ * @adapter: board private structure
+ *
+ * Attempts to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+static int igbvf_request_irq(struct igbvf_adapter *adapter)
+{
+ int err = -1;
+
+ /* igbvf supports msi-x only */
+ if (adapter->msix_entries)
+ err = igbvf_request_msix(adapter);
+
+ if (!err)
+ return err;
+
+ dev_err(&adapter->pdev->dev,
+ "Unable to allocate interrupt, Error: %d\n", err);
+
+ return err;
+}
+
+static void igbvf_free_irq(struct igbvf_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ int vector;
+
+ if (adapter->msix_entries) {
+ for (vector = 0; vector < 3; vector++)
+ free_irq(adapter->msix_entries[vector].vector, netdev);
+ }
+}
+
+/**
+ * igbvf_irq_disable - Mask off interrupt generation on the NIC
+ * @adapter: board private structure
+ **/
+static void igbvf_irq_disable(struct igbvf_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+
+ ew32(EIMC, ~0);
+
+ if (adapter->msix_entries)
+ ew32(EIAC, 0);
+}
+
+/**
+ * igbvf_irq_enable - Enable default interrupt generation settings
+ * @adapter: board private structure
+ **/
+static void igbvf_irq_enable(struct igbvf_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+
+ ew32(EIAC, adapter->eims_enable_mask);
+ ew32(EIAM, adapter->eims_enable_mask);
+ ew32(EIMS, adapter->eims_enable_mask);
+}
+
+/**
+ * igbvf_poll - NAPI Rx polling callback
+ * @napi: struct associated with this polling callback
+ * @budget: amount of packets driver is allowed to process this poll
+ **/
+static int igbvf_poll(struct napi_struct *napi, int budget)
+{
+ struct igbvf_ring *rx_ring = container_of(napi, struct igbvf_ring, napi);
+ struct igbvf_adapter *adapter = rx_ring->adapter;
+ struct e1000_hw *hw = &adapter->hw;
+ int work_done = 0;
+
+ igbvf_clean_rx_irq(adapter, &work_done, budget);
+
+ /* If not enough Rx work done, exit the polling mode */
+ if (work_done < budget) {
+ napi_complete_done(napi, work_done);
+
+ if (adapter->requested_itr & 3)
+ igbvf_set_itr(adapter);
+
+ if (!test_bit(__IGBVF_DOWN, &adapter->state))
+ ew32(EIMS, adapter->rx_ring->eims_value);
+ }
+
+ return work_done;
+}
+
+/**
+ * igbvf_set_rlpml - set receive large packet maximum length
+ * @adapter: board private structure
+ *
+ * Configure the maximum size of packets that will be received
+ */
+static void igbvf_set_rlpml(struct igbvf_adapter *adapter)
+{
+ int max_frame_size;
+ struct e1000_hw *hw = &adapter->hw;
+
+ max_frame_size = adapter->max_frame_size + VLAN_TAG_SIZE;
+ e1000_rlpml_set_vf(hw, max_frame_size);
+}
+
+static int igbvf_vlan_rx_add_vid(struct net_device *netdev,
+ __be16 proto, u16 vid)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+
+ if (hw->mac.ops.set_vfta(hw, vid, true)) {
+ dev_err(&adapter->pdev->dev, "Failed to add vlan id %d\n", vid);
+ return -EINVAL;
+ }
+ set_bit(vid, adapter->active_vlans);
+ return 0;
+}
+
+static int igbvf_vlan_rx_kill_vid(struct net_device *netdev,
+ __be16 proto, u16 vid)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+
+ if (hw->mac.ops.set_vfta(hw, vid, false)) {
+ dev_err(&adapter->pdev->dev,
+ "Failed to remove vlan id %d\n", vid);
+ return -EINVAL;
+ }
+ clear_bit(vid, adapter->active_vlans);
+ return 0;
+}
+
+static void igbvf_restore_vlan(struct igbvf_adapter *adapter)
+{
+ u16 vid;
+
+ for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
+ igbvf_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid);
+}
+
+/**
+ * igbvf_configure_tx - Configure Transmit Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Tx unit of the MAC after a reset.
+ **/
+static void igbvf_configure_tx(struct igbvf_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ struct igbvf_ring *tx_ring = adapter->tx_ring;
+ u64 tdba;
+ u32 txdctl, dca_txctrl;
+
+ /* disable transmits */
+ txdctl = er32(TXDCTL(0));
+ ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE);
+ e1e_flush();
+ msleep(10);
+
+ /* Setup the HW Tx Head and Tail descriptor pointers */
+ ew32(TDLEN(0), tx_ring->count * sizeof(union e1000_adv_tx_desc));
+ tdba = tx_ring->dma;
+ ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32)));
+ ew32(TDBAH(0), (tdba >> 32));
+ ew32(TDH(0), 0);
+ ew32(TDT(0), 0);
+ tx_ring->head = E1000_TDH(0);
+ tx_ring->tail = E1000_TDT(0);
+
+ /* Turn off Relaxed Ordering on head write-backs. The writebacks
+ * MUST be delivered in order or it will completely screw up
+ * our bookkeeping.
+ */
+ dca_txctrl = er32(DCA_TXCTRL(0));
+ dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
+ ew32(DCA_TXCTRL(0), dca_txctrl);
+
+ /* enable transmits */
+ txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
+ ew32(TXDCTL(0), txdctl);
+
+ /* Setup Transmit Descriptor Settings for eop descriptor */
+ adapter->txd_cmd = E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_IFCS;
+
+ /* enable Report Status bit */
+ adapter->txd_cmd |= E1000_ADVTXD_DCMD_RS;
+}
+
+/**
+ * igbvf_setup_srrctl - configure the receive control registers
+ * @adapter: Board private structure
+ **/
+static void igbvf_setup_srrctl(struct igbvf_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u32 srrctl = 0;
+
+ srrctl &= ~(E1000_SRRCTL_DESCTYPE_MASK |
+ E1000_SRRCTL_BSIZEHDR_MASK |
+ E1000_SRRCTL_BSIZEPKT_MASK);
+
+ /* Enable queue drop to avoid head of line blocking */
+ srrctl |= E1000_SRRCTL_DROP_EN;
+
+ /* Setup buffer sizes */
+ srrctl |= ALIGN(adapter->rx_buffer_len, 1024) >>
+ E1000_SRRCTL_BSIZEPKT_SHIFT;
+
+ if (adapter->rx_buffer_len < 2048) {
+ adapter->rx_ps_hdr_size = 0;
+ srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
+ } else {
+ adapter->rx_ps_hdr_size = 128;
+ srrctl |= adapter->rx_ps_hdr_size <<
+ E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
+ srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
+ }
+
+ ew32(SRRCTL(0), srrctl);
+}
+
+/**
+ * igbvf_configure_rx - Configure Receive Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Rx unit of the MAC after a reset.
+ **/
+static void igbvf_configure_rx(struct igbvf_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ struct igbvf_ring *rx_ring = adapter->rx_ring;
+ u64 rdba;
+ u32 rdlen, rxdctl;
+
+ /* disable receives */
+ rxdctl = er32(RXDCTL(0));
+ ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE);
+ e1e_flush();
+ msleep(10);
+
+ rdlen = rx_ring->count * sizeof(union e1000_adv_rx_desc);
+
+ /* Setup the HW Rx Head and Tail Descriptor Pointers and
+ * the Base and Length of the Rx Descriptor Ring
+ */
+ rdba = rx_ring->dma;
+ ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32)));
+ ew32(RDBAH(0), (rdba >> 32));
+ ew32(RDLEN(0), rx_ring->count * sizeof(union e1000_adv_rx_desc));
+ rx_ring->head = E1000_RDH(0);
+ rx_ring->tail = E1000_RDT(0);
+ ew32(RDH(0), 0);
+ ew32(RDT(0), 0);
+
+ rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
+ rxdctl &= 0xFFF00000;
+ rxdctl |= IGBVF_RX_PTHRESH;
+ rxdctl |= IGBVF_RX_HTHRESH << 8;
+ rxdctl |= IGBVF_RX_WTHRESH << 16;
+
+ igbvf_set_rlpml(adapter);
+
+ /* enable receives */
+ ew32(RXDCTL(0), rxdctl);
+}
+
+/**
+ * igbvf_set_multi - Multicast and Promiscuous mode set
+ * @netdev: network interface device structure
+ *
+ * The set_multi entry point is called whenever the multicast address
+ * list or the network interface flags are updated. This routine is
+ * responsible for configuring the hardware for proper multicast,
+ * promiscuous mode, and all-multi behavior.
+ **/
+static void igbvf_set_multi(struct net_device *netdev)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ struct netdev_hw_addr *ha;
+ u8 *mta_list = NULL;
+ int i;
+
+ if (!netdev_mc_empty(netdev)) {
+ mta_list = kmalloc_array(netdev_mc_count(netdev), ETH_ALEN,
+ GFP_ATOMIC);
+ if (!mta_list)
+ return;
+ }
+
+ /* prepare a packed array of only addresses. */
+ i = 0;
+ netdev_for_each_mc_addr(ha, netdev)
+ memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
+
+ hw->mac.ops.update_mc_addr_list(hw, mta_list, i, 0, 0);
+ kfree(mta_list);
+}
+
+/**
+ * igbvf_configure - configure the hardware for Rx and Tx
+ * @adapter: private board structure
+ **/
+static void igbvf_configure(struct igbvf_adapter *adapter)
+{
+ igbvf_set_multi(adapter->netdev);
+
+ igbvf_restore_vlan(adapter);
+
+ igbvf_configure_tx(adapter);
+ igbvf_setup_srrctl(adapter);
+ igbvf_configure_rx(adapter);
+ igbvf_alloc_rx_buffers(adapter->rx_ring,
+ igbvf_desc_unused(adapter->rx_ring));
+}
+
+/* igbvf_reset - bring the hardware into a known good state
+ * @adapter: private board structure
+ *
+ * This function boots the hardware and enables some settings that
+ * require a configuration cycle of the hardware - those cannot be
+ * set/changed during runtime. After reset the device needs to be
+ * properly configured for Rx, Tx etc.
+ */
+static void igbvf_reset(struct igbvf_adapter *adapter)
+{
+ struct e1000_mac_info *mac = &adapter->hw.mac;
+ struct net_device *netdev = adapter->netdev;
+ struct e1000_hw *hw = &adapter->hw;
+
+ /* Allow time for pending master requests to run */
+ if (mac->ops.reset_hw(hw))
+ dev_err(&adapter->pdev->dev, "PF still resetting\n");
+
+ mac->ops.init_hw(hw);
+
+ if (is_valid_ether_addr(adapter->hw.mac.addr)) {
+ memcpy(netdev->dev_addr, adapter->hw.mac.addr,
+ netdev->addr_len);
+ memcpy(netdev->perm_addr, adapter->hw.mac.addr,
+ netdev->addr_len);
+ }
+
+ adapter->last_reset = jiffies;
+}
+
+int igbvf_up(struct igbvf_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+
+ /* hardware has been reset, we need to reload some things */
+ igbvf_configure(adapter);
+
+ clear_bit(__IGBVF_DOWN, &adapter->state);
+
+ napi_enable(&adapter->rx_ring->napi);
+ if (adapter->msix_entries)
+ igbvf_configure_msix(adapter);
+
+ /* Clear any pending interrupts. */
+ er32(EICR);
+ igbvf_irq_enable(adapter);
+
+ /* start the watchdog */
+ hw->mac.get_link_status = 1;
+ mod_timer(&adapter->watchdog_timer, jiffies + 1);
+
+ return 0;
+}
+
+void igbvf_down(struct igbvf_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ struct e1000_hw *hw = &adapter->hw;
+ u32 rxdctl, txdctl;
+
+ /* signal that we're down so the interrupt handler does not
+ * reschedule our watchdog timer
+ */
+ set_bit(__IGBVF_DOWN, &adapter->state);
+
+ /* disable receives in the hardware */
+ rxdctl = er32(RXDCTL(0));
+ ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE);
+
+ netif_carrier_off(netdev);
+ netif_stop_queue(netdev);
+
+ /* disable transmits in the hardware */
+ txdctl = er32(TXDCTL(0));
+ ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE);
+
+ /* flush both disables and wait for them to finish */
+ e1e_flush();
+ msleep(10);
+
+ napi_disable(&adapter->rx_ring->napi);
+
+ igbvf_irq_disable(adapter);
+
+ del_timer_sync(&adapter->watchdog_timer);
+
+ /* record the stats before reset*/
+ igbvf_update_stats(adapter);
+
+ adapter->link_speed = 0;
+ adapter->link_duplex = 0;
+
+ igbvf_reset(adapter);
+ igbvf_clean_tx_ring(adapter->tx_ring);
+ igbvf_clean_rx_ring(adapter->rx_ring);
+}
+
+void igbvf_reinit_locked(struct igbvf_adapter *adapter)
+{
+ might_sleep();
+ while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
+ usleep_range(1000, 2000);
+ igbvf_down(adapter);
+ igbvf_up(adapter);
+ clear_bit(__IGBVF_RESETTING, &adapter->state);
+}
+
+/**
+ * igbvf_sw_init - Initialize general software structures (struct igbvf_adapter)
+ * @adapter: board private structure to initialize
+ *
+ * igbvf_sw_init initializes the Adapter private data structure.
+ * Fields are initialized based on PCI device information and
+ * OS network device settings (MTU size).
+ **/
+static int igbvf_sw_init(struct igbvf_adapter *adapter)
+{
+ struct net_device *netdev = adapter->netdev;
+ s32 rc;
+
+ adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
+ adapter->rx_ps_hdr_size = 0;
+ adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
+ adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
+
+ adapter->tx_int_delay = 8;
+ adapter->tx_abs_int_delay = 32;
+ adapter->rx_int_delay = 0;
+ adapter->rx_abs_int_delay = 8;
+ adapter->requested_itr = 3;
+ adapter->current_itr = IGBVF_START_ITR;
+
+ /* Set various function pointers */
+ adapter->ei->init_ops(&adapter->hw);
+
+ rc = adapter->hw.mac.ops.init_params(&adapter->hw);
+ if (rc)
+ return rc;
+
+ rc = adapter->hw.mbx.ops.init_params(&adapter->hw);
+ if (rc)
+ return rc;
+
+ igbvf_set_interrupt_capability(adapter);
+
+ if (igbvf_alloc_queues(adapter))
+ return -ENOMEM;
+
+ spin_lock_init(&adapter->tx_queue_lock);
+
+ /* Explicitly disable IRQ since the NIC can be in any state. */
+ igbvf_irq_disable(adapter);
+
+ spin_lock_init(&adapter->stats_lock);
+
+ set_bit(__IGBVF_DOWN, &adapter->state);
+ return 0;
+}
+
+static void igbvf_initialize_last_counter_stats(struct igbvf_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+
+ adapter->stats.last_gprc = er32(VFGPRC);
+ adapter->stats.last_gorc = er32(VFGORC);
+ adapter->stats.last_gptc = er32(VFGPTC);
+ adapter->stats.last_gotc = er32(VFGOTC);
+ adapter->stats.last_mprc = er32(VFMPRC);
+ adapter->stats.last_gotlbc = er32(VFGOTLBC);
+ adapter->stats.last_gptlbc = er32(VFGPTLBC);
+ adapter->stats.last_gorlbc = er32(VFGORLBC);
+ adapter->stats.last_gprlbc = er32(VFGPRLBC);
+
+ adapter->stats.base_gprc = er32(VFGPRC);
+ adapter->stats.base_gorc = er32(VFGORC);
+ adapter->stats.base_gptc = er32(VFGPTC);
+ adapter->stats.base_gotc = er32(VFGOTC);
+ adapter->stats.base_mprc = er32(VFMPRC);
+ adapter->stats.base_gotlbc = er32(VFGOTLBC);
+ adapter->stats.base_gptlbc = er32(VFGPTLBC);
+ adapter->stats.base_gorlbc = er32(VFGORLBC);
+ adapter->stats.base_gprlbc = er32(VFGPRLBC);
+}
+
+/**
+ * igbvf_open - Called when a network interface is made active
+ * @netdev: network interface device structure
+ *
+ * Returns 0 on success, negative value on failure
+ *
+ * The open entry point is called when a network interface is made
+ * active by the system (IFF_UP). At this point all resources needed
+ * for transmit and receive operations are allocated, the interrupt
+ * handler is registered with the OS, the watchdog timer is started,
+ * and the stack is notified that the interface is ready.
+ **/
+static int igbvf_open(struct net_device *netdev)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ int err;
+
+ /* disallow open during test */
+ if (test_bit(__IGBVF_TESTING, &adapter->state))
+ return -EBUSY;
+
+ /* allocate transmit descriptors */
+ err = igbvf_setup_tx_resources(adapter, adapter->tx_ring);
+ if (err)
+ goto err_setup_tx;
+
+ /* allocate receive descriptors */
+ err = igbvf_setup_rx_resources(adapter, adapter->rx_ring);
+ if (err)
+ goto err_setup_rx;
+
+ /* before we allocate an interrupt, we must be ready to handle it.
+ * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
+ * as soon as we call pci_request_irq, so we have to setup our
+ * clean_rx handler before we do so.
+ */
+ igbvf_configure(adapter);
+
+ err = igbvf_request_irq(adapter);
+ if (err)
+ goto err_req_irq;
+
+ /* From here on the code is the same as igbvf_up() */
+ clear_bit(__IGBVF_DOWN, &adapter->state);
+
+ napi_enable(&adapter->rx_ring->napi);
+
+ /* clear any pending interrupts */
+ er32(EICR);
+
+ igbvf_irq_enable(adapter);
+
+ /* start the watchdog */
+ hw->mac.get_link_status = 1;
+ mod_timer(&adapter->watchdog_timer, jiffies + 1);
+
+ return 0;
+
+err_req_irq:
+ igbvf_free_rx_resources(adapter->rx_ring);
+err_setup_rx:
+ igbvf_free_tx_resources(adapter->tx_ring);
+err_setup_tx:
+ igbvf_reset(adapter);
+
+ return err;
+}
+
+/**
+ * igbvf_close - Disables a network interface
+ * @netdev: network interface device structure
+ *
+ * Returns 0, this is not allowed to fail
+ *
+ * The close entry point is called when an interface is de-activated
+ * by the OS. The hardware is still under the drivers control, but
+ * needs to be disabled. A global MAC reset is issued to stop the
+ * hardware, and all transmit and receive resources are freed.
+ **/
+static int igbvf_close(struct net_device *netdev)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state));
+ igbvf_down(adapter);
+
+ igbvf_free_irq(adapter);
+
+ igbvf_free_tx_resources(adapter->tx_ring);
+ igbvf_free_rx_resources(adapter->rx_ring);
+
+ return 0;
+}
+
+/**
+ * igbvf_set_mac - Change the Ethernet Address of the NIC
+ * @netdev: network interface device structure
+ * @p: pointer to an address structure
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int igbvf_set_mac(struct net_device *netdev, void *p)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+ struct sockaddr *addr = p;
+
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
+
+ hw->mac.ops.rar_set(hw, hw->mac.addr, 0);
+
+ if (!ether_addr_equal(addr->sa_data, hw->mac.addr))
+ return -EADDRNOTAVAIL;
+
+ memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+
+ return 0;
+}
+
+#define UPDATE_VF_COUNTER(reg, name) \
+{ \
+ u32 current_counter = er32(reg); \
+ if (current_counter < adapter->stats.last_##name) \
+ adapter->stats.name += 0x100000000LL; \
+ adapter->stats.last_##name = current_counter; \
+ adapter->stats.name &= 0xFFFFFFFF00000000LL; \
+ adapter->stats.name |= current_counter; \
+}
+
+/**
+ * igbvf_update_stats - Update the board statistics counters
+ * @adapter: board private structure
+**/
+void igbvf_update_stats(struct igbvf_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ struct pci_dev *pdev = adapter->pdev;
+
+ /* Prevent stats update while adapter is being reset, link is down
+ * or if the pci connection is down.
+ */
+ if (adapter->link_speed == 0)
+ return;
+
+ if (test_bit(__IGBVF_RESETTING, &adapter->state))
+ return;
+
+ if (pci_channel_offline(pdev))
+ return;
+
+ UPDATE_VF_COUNTER(VFGPRC, gprc);
+ UPDATE_VF_COUNTER(VFGORC, gorc);
+ UPDATE_VF_COUNTER(VFGPTC, gptc);
+ UPDATE_VF_COUNTER(VFGOTC, gotc);
+ UPDATE_VF_COUNTER(VFMPRC, mprc);
+ UPDATE_VF_COUNTER(VFGOTLBC, gotlbc);
+ UPDATE_VF_COUNTER(VFGPTLBC, gptlbc);
+ UPDATE_VF_COUNTER(VFGORLBC, gorlbc);
+ UPDATE_VF_COUNTER(VFGPRLBC, gprlbc);
+
+ /* Fill out the OS statistics structure */
+ adapter->net_stats.multicast = adapter->stats.mprc;
+}
+
+static void igbvf_print_link_info(struct igbvf_adapter *adapter)
+{
+ dev_info(&adapter->pdev->dev, "Link is Up %d Mbps %s Duplex\n",
+ adapter->link_speed,
+ adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half");
+}
+
+static bool igbvf_has_link(struct igbvf_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ s32 ret_val = E1000_SUCCESS;
+ bool link_active;
+
+ /* If interface is down, stay link down */
+ if (test_bit(__IGBVF_DOWN, &adapter->state))
+ return false;
+
+ ret_val = hw->mac.ops.check_for_link(hw);
+ link_active = !hw->mac.get_link_status;
+
+ /* if check for link returns error we will need to reset */
+ if (ret_val && time_after(jiffies, adapter->last_reset + (10 * HZ)))
+ schedule_work(&adapter->reset_task);
+
+ return link_active;
+}
+
+/**
+ * igbvf_watchdog - Timer Call-back
+ * @data: pointer to adapter cast into an unsigned long
+ **/
+static void igbvf_watchdog(unsigned long data)
+{
+ struct igbvf_adapter *adapter = (struct igbvf_adapter *)data;
+
+ /* Do the rest outside of interrupt context */
+ schedule_work(&adapter->watchdog_task);
+}
+
+static void igbvf_watchdog_task(struct work_struct *work)
+{
+ struct igbvf_adapter *adapter = container_of(work,
+ struct igbvf_adapter,
+ watchdog_task);
+ struct net_device *netdev = adapter->netdev;
+ struct e1000_mac_info *mac = &adapter->hw.mac;
+ struct igbvf_ring *tx_ring = adapter->tx_ring;
+ struct e1000_hw *hw = &adapter->hw;
+ u32 link;
+ int tx_pending = 0;
+
+ link = igbvf_has_link(adapter);
+
+ if (link) {
+ if (!netif_carrier_ok(netdev)) {
+ mac->ops.get_link_up_info(&adapter->hw,
+ &adapter->link_speed,
+ &adapter->link_duplex);
+ igbvf_print_link_info(adapter);
+
+ netif_carrier_on(netdev);
+ netif_wake_queue(netdev);
+ }
+ } else {
+ if (netif_carrier_ok(netdev)) {
+ adapter->link_speed = 0;
+ adapter->link_duplex = 0;
+ dev_info(&adapter->pdev->dev, "Link is Down\n");
+ netif_carrier_off(netdev);
+ netif_stop_queue(netdev);
+ }
+ }
+
+ if (netif_carrier_ok(netdev)) {
+ igbvf_update_stats(adapter);
+ } else {
+ tx_pending = (igbvf_desc_unused(tx_ring) + 1 <
+ tx_ring->count);
+ if (tx_pending) {
+ /* We've lost link, so the controller stops DMA,
+ * but we've got queued Tx work that's never going
+ * to get done, so reset controller to flush Tx.
+ * (Do the reset outside of interrupt context).
+ */
+ adapter->tx_timeout_count++;
+ schedule_work(&adapter->reset_task);
+ }
+ }
+
+ /* Cause software interrupt to ensure Rx ring is cleaned */
+ ew32(EICS, adapter->rx_ring->eims_value);
+
+ /* Reset the timer */
+ if (!test_bit(__IGBVF_DOWN, &adapter->state))
+ mod_timer(&adapter->watchdog_timer,
+ round_jiffies(jiffies + (2 * HZ)));
+}
+
+#define IGBVF_TX_FLAGS_CSUM 0x00000001
+#define IGBVF_TX_FLAGS_VLAN 0x00000002
+#define IGBVF_TX_FLAGS_TSO 0x00000004
+#define IGBVF_TX_FLAGS_IPV4 0x00000008
+#define IGBVF_TX_FLAGS_VLAN_MASK 0xffff0000
+#define IGBVF_TX_FLAGS_VLAN_SHIFT 16
+
+static int igbvf_tso(struct igbvf_adapter *adapter,
+ struct igbvf_ring *tx_ring,
+ struct sk_buff *skb, u32 tx_flags, u8 *hdr_len,
+ __be16 protocol)
+{
+ struct e1000_adv_tx_context_desc *context_desc;
+ struct igbvf_buffer *buffer_info;
+ u32 info = 0, tu_cmd = 0;
+ u32 mss_l4len_idx, l4len;
+ unsigned int i;
+ int err;
+
+ *hdr_len = 0;
+
+ err = skb_cow_head(skb, 0);
+ if (err < 0) {
+ dev_err(&adapter->pdev->dev, "igbvf_tso returning an error\n");
+ return err;
+ }
+
+ l4len = tcp_hdrlen(skb);
+ *hdr_len += l4len;
+
+ if (protocol == htons(ETH_P_IP)) {
+ struct iphdr *iph = ip_hdr(skb);
+
+ iph->tot_len = 0;
+ iph->check = 0;
+ tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
+ iph->daddr, 0,
+ IPPROTO_TCP,
+ 0);
+ } else if (skb_is_gso_v6(skb)) {
+ ipv6_hdr(skb)->payload_len = 0;
+ tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
+ &ipv6_hdr(skb)->daddr,
+ 0, IPPROTO_TCP, 0);
+ }
+
+ i = tx_ring->next_to_use;
+
+ buffer_info = &tx_ring->buffer_info[i];
+ context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i);
+ /* VLAN MACLEN IPLEN */
+ if (tx_flags & IGBVF_TX_FLAGS_VLAN)
+ info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK);
+ info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
+ *hdr_len += skb_network_offset(skb);
+ info |= (skb_transport_header(skb) - skb_network_header(skb));
+ *hdr_len += (skb_transport_header(skb) - skb_network_header(skb));
+ context_desc->vlan_macip_lens = cpu_to_le32(info);
+
+ /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
+ tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
+
+ if (protocol == htons(ETH_P_IP))
+ tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
+ tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+
+ context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
+
+ /* MSS L4LEN IDX */
+ mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT);
+ mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT);
+
+ context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
+ context_desc->seqnum_seed = 0;
+
+ buffer_info->time_stamp = jiffies;
+ buffer_info->dma = 0;
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+
+ tx_ring->next_to_use = i;
+
+ return true;
+}
+
+static inline bool igbvf_tx_csum(struct igbvf_adapter *adapter,
+ struct igbvf_ring *tx_ring,
+ struct sk_buff *skb, u32 tx_flags,
+ __be16 protocol)
+{
+ struct e1000_adv_tx_context_desc *context_desc;
+ unsigned int i;
+ struct igbvf_buffer *buffer_info;
+ u32 info = 0, tu_cmd = 0;
+
+ if ((skb->ip_summed == CHECKSUM_PARTIAL) ||
+ (tx_flags & IGBVF_TX_FLAGS_VLAN)) {
+ i = tx_ring->next_to_use;
+ buffer_info = &tx_ring->buffer_info[i];
+ context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i);
+
+ if (tx_flags & IGBVF_TX_FLAGS_VLAN)
+ info |= (tx_flags & IGBVF_TX_FLAGS_VLAN_MASK);
+
+ info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
+ if (skb->ip_summed == CHECKSUM_PARTIAL)
+ info |= (skb_transport_header(skb) -
+ skb_network_header(skb));
+
+ context_desc->vlan_macip_lens = cpu_to_le32(info);
+
+ tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ switch (protocol) {
+ case htons(ETH_P_IP):
+ tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
+ if (ip_hdr(skb)->protocol == IPPROTO_TCP)
+ tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+ break;
+ case htons(ETH_P_IPV6):
+ if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
+ tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+ break;
+ default:
+ break;
+ }
+ }
+
+ context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
+ context_desc->seqnum_seed = 0;
+ context_desc->mss_l4len_idx = 0;
+
+ buffer_info->time_stamp = jiffies;
+ buffer_info->dma = 0;
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+ tx_ring->next_to_use = i;
+
+ return true;
+ }
+
+ return false;
+}
+
+static int igbvf_maybe_stop_tx(struct net_device *netdev, int size)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ /* there is enough descriptors then we don't need to worry */
+ if (igbvf_desc_unused(adapter->tx_ring) >= size)
+ return 0;
+
+ netif_stop_queue(netdev);
+
+ /* Herbert's original patch had:
+ * smp_mb__after_netif_stop_queue();
+ * but since that doesn't exist yet, just open code it.
+ */
+ smp_mb();
+
+ /* We need to check again just in case room has been made available */
+ if (igbvf_desc_unused(adapter->tx_ring) < size)
+ return -EBUSY;
+
+ netif_wake_queue(netdev);
+
+ ++adapter->restart_queue;
+ return 0;
+}
+
+#define IGBVF_MAX_TXD_PWR 16
+#define IGBVF_MAX_DATA_PER_TXD (1 << IGBVF_MAX_TXD_PWR)
+
+static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter,
+ struct igbvf_ring *tx_ring,
+ struct sk_buff *skb)
+{
+ struct igbvf_buffer *buffer_info;
+ struct pci_dev *pdev = adapter->pdev;
+ unsigned int len = skb_headlen(skb);
+ unsigned int count = 0, i;
+ unsigned int f;
+
+ i = tx_ring->next_to_use;
+
+ buffer_info = &tx_ring->buffer_info[i];
+ BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD);
+ buffer_info->length = len;
+ /* set time_stamp *before* dma to help avoid a possible race */
+ buffer_info->time_stamp = jiffies;
+ buffer_info->mapped_as_page = false;
+ buffer_info->dma = dma_map_single(&pdev->dev, skb->data, len,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(&pdev->dev, buffer_info->dma))
+ goto dma_error;
+
+ for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) {
+ const struct skb_frag_struct *frag;
+
+ count++;
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+
+ frag = &skb_shinfo(skb)->frags[f];
+ len = skb_frag_size(frag);
+
+ buffer_info = &tx_ring->buffer_info[i];
+ BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD);
+ buffer_info->length = len;
+ buffer_info->time_stamp = jiffies;
+ buffer_info->mapped_as_page = true;
+ buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, 0, len,
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(&pdev->dev, buffer_info->dma))
+ goto dma_error;
+ }
+
+ tx_ring->buffer_info[i].skb = skb;
+
+ return ++count;
+
+dma_error:
+ dev_err(&pdev->dev, "TX DMA map failed\n");
+
+ /* clear timestamp and dma mappings for failed buffer_info mapping */
+ buffer_info->dma = 0;
+ buffer_info->time_stamp = 0;
+ buffer_info->length = 0;
+ buffer_info->mapped_as_page = false;
+ if (count)
+ count--;
+
+ /* clear timestamp and dma mappings for remaining portion of packet */
+ while (count--) {
+ if (i == 0)
+ i += tx_ring->count;
+ i--;
+ buffer_info = &tx_ring->buffer_info[i];
+ igbvf_put_txbuf(adapter, buffer_info);
+ }
+
+ return 0;
+}
+
+static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter,
+ struct igbvf_ring *tx_ring,
+ int tx_flags, int count,
+ unsigned int first, u32 paylen,
+ u8 hdr_len)
+{
+ union e1000_adv_tx_desc *tx_desc = NULL;
+ struct igbvf_buffer *buffer_info;
+ u32 olinfo_status = 0, cmd_type_len;
+ unsigned int i;
+
+ cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS |
+ E1000_ADVTXD_DCMD_DEXT);
+
+ if (tx_flags & IGBVF_TX_FLAGS_VLAN)
+ cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
+
+ if (tx_flags & IGBVF_TX_FLAGS_TSO) {
+ cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
+
+ /* insert tcp checksum */
+ olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
+
+ /* insert ip checksum */
+ if (tx_flags & IGBVF_TX_FLAGS_IPV4)
+ olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
+
+ } else if (tx_flags & IGBVF_TX_FLAGS_CSUM) {
+ olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
+ }
+
+ olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT);
+
+ i = tx_ring->next_to_use;
+ while (count--) {
+ buffer_info = &tx_ring->buffer_info[i];
+ tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
+ tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
+ tx_desc->read.cmd_type_len =
+ cpu_to_le32(cmd_type_len | buffer_info->length);
+ tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
+ i++;
+ if (i == tx_ring->count)
+ i = 0;
+ }
+
+ tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd);
+ /* Force memory writes to complete before letting h/w
+ * know there are new descriptors to fetch. (Only
+ * applicable for weak-ordered memory model archs,
+ * such as IA-64).
+ */
+ wmb();
+
+ tx_ring->buffer_info[first].next_to_watch = tx_desc;
+ tx_ring->next_to_use = i;
+ writel(i, adapter->hw.hw_addr + tx_ring->tail);
+ /* we need this if more than one processor can write to our tail
+ * at a time, it synchronizes IO on IA64/Altix systems
+ */
+ mmiowb();
+}
+
+static netdev_tx_t igbvf_xmit_frame_ring_adv(struct sk_buff *skb,
+ struct net_device *netdev,
+ struct igbvf_ring *tx_ring)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ unsigned int first, tx_flags = 0;
+ u8 hdr_len = 0;
+ int count = 0;
+ int tso = 0;
+ __be16 protocol = vlan_get_protocol(skb);
+
+ if (test_bit(__IGBVF_DOWN, &adapter->state)) {
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
+ if (skb->len <= 0) {
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
+ /* need: count + 4 desc gap to keep tail from touching
+ * + 2 desc gap to keep tail from touching head,
+ * + 1 desc for skb->data,
+ * + 1 desc for context descriptor,
+ * head, otherwise try next time
+ */
+ if (igbvf_maybe_stop_tx(netdev, skb_shinfo(skb)->nr_frags + 4)) {
+ /* this is a hard error */
+ return NETDEV_TX_BUSY;
+ }
+
+ if (skb_vlan_tag_present(skb)) {
+ tx_flags |= IGBVF_TX_FLAGS_VLAN;
+ tx_flags |= (skb_vlan_tag_get(skb) <<
+ IGBVF_TX_FLAGS_VLAN_SHIFT);
+ }
+
+ if (protocol == htons(ETH_P_IP))
+ tx_flags |= IGBVF_TX_FLAGS_IPV4;
+
+ first = tx_ring->next_to_use;
+
+ tso = skb_is_gso(skb) ?
+ igbvf_tso(adapter, tx_ring, skb, tx_flags, &hdr_len, protocol) : 0;
+ if (unlikely(tso < 0)) {
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
+ if (tso)
+ tx_flags |= IGBVF_TX_FLAGS_TSO;
+ else if (igbvf_tx_csum(adapter, tx_ring, skb, tx_flags, protocol) &&
+ (skb->ip_summed == CHECKSUM_PARTIAL))
+ tx_flags |= IGBVF_TX_FLAGS_CSUM;
+
+ /* count reflects descriptors mapped, if 0 then mapping error
+ * has occurred and we need to rewind the descriptor queue
+ */
+ count = igbvf_tx_map_adv(adapter, tx_ring, skb);
+
+ if (count) {
+ igbvf_tx_queue_adv(adapter, tx_ring, tx_flags, count,
+ first, skb->len, hdr_len);
+ /* Make sure there is space in the ring for the next send. */
+ igbvf_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 4);
+ } else {
+ dev_kfree_skb_any(skb);
+ tx_ring->buffer_info[first].time_stamp = 0;
+ tx_ring->next_to_use = first;
+ }
+
+ return NETDEV_TX_OK;
+}
+
+static netdev_tx_t igbvf_xmit_frame(struct sk_buff *skb,
+ struct net_device *netdev)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct igbvf_ring *tx_ring;
+
+ if (test_bit(__IGBVF_DOWN, &adapter->state)) {
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
+ tx_ring = &adapter->tx_ring[0];
+
+ return igbvf_xmit_frame_ring_adv(skb, netdev, tx_ring);
+}
+
+/**
+ * igbvf_tx_timeout - Respond to a Tx Hang
+ * @netdev: network interface device structure
+ **/
+static void igbvf_tx_timeout(struct net_device *netdev)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ /* Do the reset outside of interrupt context */
+ adapter->tx_timeout_count++;
+ schedule_work(&adapter->reset_task);
+}
+
+static void igbvf_reset_task(struct work_struct *work)
+{
+ struct igbvf_adapter *adapter;
+
+ adapter = container_of(work, struct igbvf_adapter, reset_task);
+
+ igbvf_reinit_locked(adapter);
+}
+
+/**
+ * igbvf_get_stats - Get System Network Statistics
+ * @netdev: network interface device structure
+ *
+ * Returns the address of the device statistics structure.
+ * The statistics are actually updated from the timer callback.
+ **/
+static struct net_device_stats *igbvf_get_stats(struct net_device *netdev)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ /* only return the current stats */
+ return &adapter->net_stats;
+}
+
+/**
+ * igbvf_change_mtu - Change the Maximum Transfer Unit
+ * @netdev: network interface device structure
+ * @new_mtu: new value for maximum frame size
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int igbvf_change_mtu(struct net_device *netdev, int new_mtu)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
+
+ if (new_mtu < 68 || new_mtu > INT_MAX - ETH_HLEN - ETH_FCS_LEN ||
+ max_frame > MAX_JUMBO_FRAME_SIZE)
+ return -EINVAL;
+
+#define MAX_STD_JUMBO_FRAME_SIZE 9234
+ if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
+ dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n");
+ return -EINVAL;
+ }
+
+ while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
+ usleep_range(1000, 2000);
+ /* igbvf_down has a dependency on max_frame_size */
+ adapter->max_frame_size = max_frame;
+ if (netif_running(netdev))
+ igbvf_down(adapter);
+
+ /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
+ * means we reserve 2 more, this pushes us to allocate from the next
+ * larger slab size.
+ * i.e. RXBUFFER_2048 --> size-4096 slab
+ * However with the new *_jumbo_rx* routines, jumbo receives will use
+ * fragmented skbs
+ */
+
+ if (max_frame <= 1024)
+ adapter->rx_buffer_len = 1024;
+ else if (max_frame <= 2048)
+ adapter->rx_buffer_len = 2048;
+ else
+#if (PAGE_SIZE / 2) > 16384
+ adapter->rx_buffer_len = 16384;
+#else
+ adapter->rx_buffer_len = PAGE_SIZE / 2;
+#endif
+
+ /* adjust allocation if LPE protects us, and we aren't using SBP */
+ if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
+ (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN))
+ adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN +
+ ETH_FCS_LEN;
+
+ dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n",
+ netdev->mtu, new_mtu);
+ netdev->mtu = new_mtu;
+
+ if (netif_running(netdev))
+ igbvf_up(adapter);
+ else
+ igbvf_reset(adapter);
+
+ clear_bit(__IGBVF_RESETTING, &adapter->state);
+
+ return 0;
+}
+
+static int igbvf_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+ switch (cmd) {
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int igbvf_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+#ifdef CONFIG_PM
+ int retval = 0;
+#endif
+
+ netif_device_detach(netdev);
+
+ if (netif_running(netdev)) {
+ WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state));
+ igbvf_down(adapter);
+ igbvf_free_irq(adapter);
+ }
+
+#ifdef CONFIG_PM
+ retval = pci_save_state(pdev);
+ if (retval)
+ return retval;
+#endif
+
+ pci_disable_device(pdev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int igbvf_resume(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ u32 err;
+
+ pci_restore_state(pdev);
+ err = pci_enable_device_mem(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
+ return err;
+ }
+
+ pci_set_master(pdev);
+
+ if (netif_running(netdev)) {
+ err = igbvf_request_irq(adapter);
+ if (err)
+ return err;
+ }
+
+ igbvf_reset(adapter);
+
+ if (netif_running(netdev))
+ igbvf_up(adapter);
+
+ netif_device_attach(netdev);
+
+ return 0;
+}
+#endif
+
+static void igbvf_shutdown(struct pci_dev *pdev)
+{
+ igbvf_suspend(pdev, PMSG_SUSPEND);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/* Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+static void igbvf_netpoll(struct net_device *netdev)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ disable_irq(adapter->pdev->irq);
+
+ igbvf_clean_tx_irq(adapter->tx_ring);
+
+ enable_irq(adapter->pdev->irq);
+}
+#endif
+
+/**
+ * igbvf_io_error_detected - called when PCI error is detected
+ * @pdev: Pointer to PCI device
+ * @state: The current pci connection state
+ *
+ * This function is called after a PCI bus error affecting
+ * this device has been detected.
+ */
+static pci_ers_result_t igbvf_io_error_detected(struct pci_dev *pdev,
+ pci_channel_state_t state)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ netif_device_detach(netdev);
+
+ if (state == pci_channel_io_perm_failure)
+ return PCI_ERS_RESULT_DISCONNECT;
+
+ if (netif_running(netdev))
+ igbvf_down(adapter);
+ pci_disable_device(pdev);
+
+ /* Request a slot slot reset. */
+ return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * igbvf_io_slot_reset - called after the pci bus has been reset.
+ * @pdev: Pointer to PCI device
+ *
+ * Restart the card from scratch, as if from a cold-boot. Implementation
+ * resembles the first-half of the igbvf_resume routine.
+ */
+static pci_ers_result_t igbvf_io_slot_reset(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ if (pci_enable_device_mem(pdev)) {
+ dev_err(&pdev->dev,
+ "Cannot re-enable PCI device after reset.\n");
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+ pci_set_master(pdev);
+
+ igbvf_reset(adapter);
+
+ return PCI_ERS_RESULT_RECOVERED;
+}
+
+/**
+ * igbvf_io_resume - called when traffic can start flowing again.
+ * @pdev: Pointer to PCI device
+ *
+ * This callback is called when the error recovery driver tells us that
+ * its OK to resume normal operation. Implementation resembles the
+ * second-half of the igbvf_resume routine.
+ */
+static void igbvf_io_resume(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ if (netif_running(netdev)) {
+ if (igbvf_up(adapter)) {
+ dev_err(&pdev->dev,
+ "can't bring device back up after reset\n");
+ return;
+ }
+ }
+
+ netif_device_attach(netdev);
+}
+
+static void igbvf_print_device_info(struct igbvf_adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ struct net_device *netdev = adapter->netdev;
+ struct pci_dev *pdev = adapter->pdev;
+
+ if (hw->mac.type == e1000_vfadapt_i350)
+ dev_info(&pdev->dev, "Intel(R) I350 Virtual Function\n");
+ else
+ dev_info(&pdev->dev, "Intel(R) 82576 Virtual Function\n");
+ dev_info(&pdev->dev, "Address: %pM\n", netdev->dev_addr);
+}
+
+static int igbvf_set_features(struct net_device *netdev,
+ netdev_features_t features)
+{
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+
+ if (features & NETIF_F_RXCSUM)
+ adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED;
+ else
+ adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED;
+
+ return 0;
+}
+
+static const struct net_device_ops igbvf_netdev_ops = {
+ .ndo_open = igbvf_open,
+ .ndo_stop = igbvf_close,
+ .ndo_start_xmit = igbvf_xmit_frame,
+ .ndo_get_stats = igbvf_get_stats,
+ .ndo_set_rx_mode = igbvf_set_multi,
+ .ndo_set_mac_address = igbvf_set_mac,
+ .ndo_change_mtu = igbvf_change_mtu,
+ .ndo_do_ioctl = igbvf_ioctl,
+ .ndo_tx_timeout = igbvf_tx_timeout,
+ .ndo_vlan_rx_add_vid = igbvf_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = igbvf_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = igbvf_netpoll,
+#endif
+ .ndo_set_features = igbvf_set_features,
+ .ndo_features_check = passthru_features_check,
+};
+
+/**
+ * igbvf_probe - Device Initialization Routine
+ * @pdev: PCI device information struct
+ * @ent: entry in igbvf_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ *
+ * igbvf_probe initializes an adapter identified by a pci_dev structure.
+ * The OS initialization, configuring of the adapter private structure,
+ * and a hardware reset occur.
+ **/
+static int igbvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct net_device *netdev;
+ struct igbvf_adapter *adapter;
+ struct e1000_hw *hw;
+ const struct igbvf_info *ei = igbvf_info_tbl[ent->driver_data];
+
+ static int cards_found;
+ int err, pci_using_dac;
+
+ err = pci_enable_device_mem(pdev);
+ if (err)
+ return err;
+
+ pci_using_dac = 0;
+ err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+ if (!err) {
+ pci_using_dac = 1;
+ } else {
+ err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+ if (err) {
+ dev_err(&pdev->dev,
+ "No usable DMA configuration, aborting\n");
+ goto err_dma;
+ }
+ }
+
+ err = pci_request_regions(pdev, igbvf_driver_name);
+ if (err)
+ goto err_pci_reg;
+
+ pci_set_master(pdev);
+
+ err = -ENOMEM;
+ netdev = alloc_etherdev(sizeof(struct igbvf_adapter));
+ if (!netdev)
+ goto err_alloc_etherdev;
+
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+
+ pci_set_drvdata(pdev, netdev);
+ adapter = netdev_priv(netdev);
+ hw = &adapter->hw;
+ adapter->netdev = netdev;
+ adapter->pdev = pdev;
+ adapter->ei = ei;
+ adapter->pba = ei->pba;
+ adapter->flags = ei->flags;
+ adapter->hw.back = adapter;
+ adapter->hw.mac.type = ei->mac;
+ adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
+
+ /* PCI config space info */
+
+ hw->vendor_id = pdev->vendor;
+ hw->device_id = pdev->device;
+ hw->subsystem_vendor_id = pdev->subsystem_vendor;
+ hw->subsystem_device_id = pdev->subsystem_device;
+ hw->revision_id = pdev->revision;
+
+ err = -EIO;
+ adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0),
+ pci_resource_len(pdev, 0));
+
+ if (!adapter->hw.hw_addr)
+ goto err_ioremap;
+
+ if (ei->get_variants) {
+ err = ei->get_variants(adapter);
+ if (err)
+ goto err_get_variants;
+ }
+
+ /* setup adapter struct */
+ err = igbvf_sw_init(adapter);
+ if (err)
+ goto err_sw_init;
+
+ /* construct the net_device struct */
+ netdev->netdev_ops = &igbvf_netdev_ops;
+
+ igbvf_set_ethtool_ops(netdev);
+ netdev->watchdog_timeo = 5 * HZ;
+ strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
+
+ adapter->bd_number = cards_found++;
+
+ netdev->hw_features = NETIF_F_SG |
+ NETIF_F_IP_CSUM |
+ NETIF_F_IPV6_CSUM |
+ NETIF_F_TSO |
+ NETIF_F_TSO6 |
+ NETIF_F_RXCSUM;
+
+ netdev->features = netdev->hw_features |
+ NETIF_F_HW_VLAN_CTAG_TX |
+ NETIF_F_HW_VLAN_CTAG_RX |
+ NETIF_F_HW_VLAN_CTAG_FILTER;
+
+ if (pci_using_dac)
+ netdev->features |= NETIF_F_HIGHDMA;
+
+ netdev->vlan_features |= NETIF_F_TSO;
+ netdev->vlan_features |= NETIF_F_TSO6;
+ netdev->vlan_features |= NETIF_F_IP_CSUM;
+ netdev->vlan_features |= NETIF_F_IPV6_CSUM;
+ netdev->vlan_features |= NETIF_F_SG;
+
+ /*reset the controller to put the device in a known good state */
+ err = hw->mac.ops.reset_hw(hw);
+ if (err) {
+ dev_info(&pdev->dev,
+ "PF still in reset state. Is the PF interface up?\n");
+ } else {
+ err = hw->mac.ops.read_mac_addr(hw);
+ if (err)
+ dev_info(&pdev->dev, "Error reading MAC address.\n");
+ else if (is_zero_ether_addr(adapter->hw.mac.addr))
+ dev_info(&pdev->dev,
+ "MAC address not assigned by administrator.\n");
+ memcpy(netdev->dev_addr, adapter->hw.mac.addr,
+ netdev->addr_len);
+ }
+
+ if (!is_valid_ether_addr(netdev->dev_addr)) {
+ dev_info(&pdev->dev, "Assigning random MAC address.\n");
+ eth_hw_addr_random(netdev);
+ memcpy(adapter->hw.mac.addr, netdev->dev_addr,
+ netdev->addr_len);
+ }
+
+ setup_timer(&adapter->watchdog_timer, &igbvf_watchdog,
+ (unsigned long)adapter);
+
+ INIT_WORK(&adapter->reset_task, igbvf_reset_task);
+ INIT_WORK(&adapter->watchdog_task, igbvf_watchdog_task);
+
+ /* ring size defaults */
+ adapter->rx_ring->count = 1024;
+ adapter->tx_ring->count = 1024;
+
+ /* reset the hardware with the new settings */
+ igbvf_reset(adapter);
+
+ /* set hardware-specific flags */
+ if (adapter->hw.mac.type == e1000_vfadapt_i350)
+ adapter->flags |= IGBVF_FLAG_RX_LB_VLAN_BSWAP;
+
+ strcpy(netdev->name, "eth%d");
+ err = register_netdev(netdev);
+ if (err)
+ goto err_hw_init;
+
+ /* tell the stack to leave us alone until igbvf_open() is called */
+ netif_carrier_off(netdev);
+ netif_stop_queue(netdev);
+
+ igbvf_print_device_info(adapter);
+
+ igbvf_initialize_last_counter_stats(adapter);
+
+ return 0;
+
+err_hw_init:
+ kfree(adapter->tx_ring);
+ kfree(adapter->rx_ring);
+err_sw_init:
+ igbvf_reset_interrupt_capability(adapter);
+err_get_variants:
+ iounmap(adapter->hw.hw_addr);
+err_ioremap:
+ free_netdev(netdev);
+err_alloc_etherdev:
+ pci_release_regions(pdev);
+err_pci_reg:
+err_dma:
+ pci_disable_device(pdev);
+ return err;
+}
+
+/**
+ * igbvf_remove - Device Removal Routine
+ * @pdev: PCI device information struct
+ *
+ * igbvf_remove is called by the PCI subsystem to alert the driver
+ * that it should release a PCI device. The could be caused by a
+ * Hot-Plug event, or because the driver is going to be removed from
+ * memory.
+ **/
+static void igbvf_remove(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct igbvf_adapter *adapter = netdev_priv(netdev);
+ struct e1000_hw *hw = &adapter->hw;
+
+ /* The watchdog timer may be rescheduled, so explicitly
+ * disable it from being rescheduled.
+ */
+ set_bit(__IGBVF_DOWN, &adapter->state);
+ del_timer_sync(&adapter->watchdog_timer);
+
+ cancel_work_sync(&adapter->reset_task);
+ cancel_work_sync(&adapter->watchdog_task);
+
+ unregister_netdev(netdev);
+
+ igbvf_reset_interrupt_capability(adapter);
+
+ /* it is important to delete the NAPI struct prior to freeing the
+ * Rx ring so that you do not end up with null pointer refs
+ */
+ netif_napi_del(&adapter->rx_ring->napi);
+ kfree(adapter->tx_ring);
+ kfree(adapter->rx_ring);
+
+ iounmap(hw->hw_addr);
+ if (hw->flash_address)
+ iounmap(hw->flash_address);
+ pci_release_regions(pdev);
+
+ free_netdev(netdev);
+
+ pci_disable_device(pdev);
+}
+
+/* PCI Error Recovery (ERS) */
+static const struct pci_error_handlers igbvf_err_handler = {
+ .error_detected = igbvf_io_error_detected,
+ .slot_reset = igbvf_io_slot_reset,
+ .resume = igbvf_io_resume,
+};
+
+static const struct pci_device_id igbvf_pci_tbl[] = {
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_VF), board_vf },
+ { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_VF), board_i350_vf },
+ { } /* terminate list */
+};
+MODULE_DEVICE_TABLE(pci, igbvf_pci_tbl);
+
+/* PCI Device API Driver */
+static struct pci_driver igbvf_driver = {
+ .name = igbvf_driver_name,
+ .id_table = igbvf_pci_tbl,
+ .probe = igbvf_probe,
+ .remove = igbvf_remove,
+#ifdef CONFIG_PM
+ /* Power Management Hooks */
+ .suspend = igbvf_suspend,
+ .resume = igbvf_resume,
+#endif
+ .shutdown = igbvf_shutdown,
+ .err_handler = &igbvf_err_handler
+};
+
+/**
+ * igbvf_init_module - Driver Registration Routine
+ *
+ * igbvf_init_module is the first routine called when the driver is
+ * loaded. All it does is register with the PCI subsystem.
+ **/
+static int __init igbvf_init_module(void)
+{
+ int ret;
+
+ pr_info("%s - version %s\n", igbvf_driver_string, igbvf_driver_version);
+ pr_info("%s\n", igbvf_copyright);
+
+ ret = pci_register_driver(&igbvf_driver);
+
+ return ret;
+}
+module_init(igbvf_init_module);
+
+/**
+ * igbvf_exit_module - Driver Exit Cleanup Routine
+ *
+ * igbvf_exit_module is called just before the driver is removed
+ * from memory.
+ **/
+static void __exit igbvf_exit_module(void)
+{
+ pci_unregister_driver(&igbvf_driver);
+}
+module_exit(igbvf_exit_module);
+
+MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
+MODULE_DESCRIPTION("Intel(R) Gigabit Virtual Function Network Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+/* netdev.c */
diff --git a/drivers/net/ethernet/intel/igbvf/regs.h b/drivers/net/ethernet/intel/igbvf/regs.h
new file mode 100644
index 0000000..86a7c12
--- /dev/null
+++ b/drivers/net/ethernet/intel/igbvf/regs.h
@@ -0,0 +1,107 @@
+/*******************************************************************************
+
+ Intel(R) 82576 Virtual Function Linux driver
+ Copyright(c) 2009 - 2012 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#ifndef _E1000_REGS_H_
+#define _E1000_REGS_H_
+
+#define E1000_CTRL 0x00000 /* Device Control - RW */
+#define E1000_STATUS 0x00008 /* Device Status - RO */
+#define E1000_ITR 0x000C4 /* Interrupt Throttling Rate - RW */
+#define E1000_EICR 0x01580 /* Ext. Interrupt Cause Read - R/clr */
+#define E1000_EITR(_n) (0x01680 + (0x4 * (_n)))
+#define E1000_EICS 0x01520 /* Ext. Interrupt Cause Set - W0 */
+#define E1000_EIMS 0x01524 /* Ext. Interrupt Mask Set/Read - RW */
+#define E1000_EIMC 0x01528 /* Ext. Interrupt Mask Clear - WO */
+#define E1000_EIAC 0x0152C /* Ext. Interrupt Auto Clear - RW */
+#define E1000_EIAM 0x01530 /* Ext. Interrupt Ack Auto Clear Mask - RW */
+#define E1000_IVAR0 0x01700 /* Interrupt Vector Allocation (array) - RW */
+#define E1000_IVAR_MISC 0x01740 /* IVAR for "other" causes - RW */
+
+/* Convenience macros
+ *
+ * Note: "_n" is the queue number of the register to be written to.
+ *
+ * Example usage:
+ * E1000_RDBAL_REG(current_rx_queue)
+ */
+#define E1000_RDBAL(_n) ((_n) < 4 ? (0x02800 + ((_n) * 0x100)) : \
+ (0x0C000 + ((_n) * 0x40)))
+#define E1000_RDBAH(_n) ((_n) < 4 ? (0x02804 + ((_n) * 0x100)) : \
+ (0x0C004 + ((_n) * 0x40)))
+#define E1000_RDLEN(_n) ((_n) < 4 ? (0x02808 + ((_n) * 0x100)) : \
+ (0x0C008 + ((_n) * 0x40)))
+#define E1000_SRRCTL(_n) ((_n) < 4 ? (0x0280C + ((_n) * 0x100)) : \
+ (0x0C00C + ((_n) * 0x40)))
+#define E1000_RDH(_n) ((_n) < 4 ? (0x02810 + ((_n) * 0x100)) : \
+ (0x0C010 + ((_n) * 0x40)))
+#define E1000_RDT(_n) ((_n) < 4 ? (0x02818 + ((_n) * 0x100)) : \
+ (0x0C018 + ((_n) * 0x40)))
+#define E1000_RXDCTL(_n) ((_n) < 4 ? (0x02828 + ((_n) * 0x100)) : \
+ (0x0C028 + ((_n) * 0x40)))
+#define E1000_TDBAL(_n) ((_n) < 4 ? (0x03800 + ((_n) * 0x100)) : \
+ (0x0E000 + ((_n) * 0x40)))
+#define E1000_TDBAH(_n) ((_n) < 4 ? (0x03804 + ((_n) * 0x100)) : \
+ (0x0E004 + ((_n) * 0x40)))
+#define E1000_TDLEN(_n) ((_n) < 4 ? (0x03808 + ((_n) * 0x100)) : \
+ (0x0E008 + ((_n) * 0x40)))
+#define E1000_TDH(_n) ((_n) < 4 ? (0x03810 + ((_n) * 0x100)) : \
+ (0x0E010 + ((_n) * 0x40)))
+#define E1000_TDT(_n) ((_n) < 4 ? (0x03818 + ((_n) * 0x100)) : \
+ (0x0E018 + ((_n) * 0x40)))
+#define E1000_TXDCTL(_n) ((_n) < 4 ? (0x03828 + ((_n) * 0x100)) : \
+ (0x0E028 + ((_n) * 0x40)))
+#define E1000_DCA_TXCTRL(_n) (0x03814 + (_n << 8))
+#define E1000_DCA_RXCTRL(_n) (0x02814 + (_n << 8))
+#define E1000_RAL(_i) (((_i) <= 15) ? (0x05400 + ((_i) * 8)) : \
+ (0x054E0 + ((_i - 16) * 8)))
+#define E1000_RAH(_i) (((_i) <= 15) ? (0x05404 + ((_i) * 8)) : \
+ (0x054E4 + ((_i - 16) * 8)))
+
+/* Statistics registers */
+#define E1000_VFGPRC 0x00F10
+#define E1000_VFGORC 0x00F18
+#define E1000_VFMPRC 0x00F3C
+#define E1000_VFGPTC 0x00F14
+#define E1000_VFGOTC 0x00F34
+#define E1000_VFGOTLBC 0x00F50
+#define E1000_VFGPTLBC 0x00F44
+#define E1000_VFGORLBC 0x00F48
+#define E1000_VFGPRLBC 0x00F40
+
+/* These act per VF so an array friendly macro is used */
+#define E1000_V2PMAILBOX(_n) (0x00C40 + (4 * (_n)))
+#define E1000_VMBMEM(_n) (0x00800 + (64 * (_n)))
+
+/* Define macros for handling registers */
+#define er32(reg) readl(hw->hw_addr + E1000_##reg)
+#define ew32(reg, val) writel((val), hw->hw_addr + E1000_##reg)
+#define array_er32(reg, offset) \
+ readl(hw->hw_addr + E1000_##reg + (offset << 2))
+#define array_ew32(reg, offset, val) \
+ writel((val), hw->hw_addr + E1000_##reg + (offset << 2))
+#define e1e_flush() er32(STATUS)
+
+#endif
diff --git a/drivers/net/ethernet/intel/igbvf/vf.c b/drivers/net/ethernet/intel/igbvf/vf.c
new file mode 100644
index 0000000..a13baa9
--- /dev/null
+++ b/drivers/net/ethernet/intel/igbvf/vf.c
@@ -0,0 +1,399 @@
+/*******************************************************************************
+
+ Intel(R) 82576 Virtual Function Linux driver
+ Copyright(c) 2009 - 2012 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#include "vf.h"
+
+static s32 e1000_check_for_link_vf(struct e1000_hw *hw);
+static s32 e1000_get_link_up_info_vf(struct e1000_hw *hw, u16 *speed,
+ u16 *duplex);
+static s32 e1000_init_hw_vf(struct e1000_hw *hw);
+static s32 e1000_reset_hw_vf(struct e1000_hw *hw);
+
+static void e1000_update_mc_addr_list_vf(struct e1000_hw *hw, u8 *,
+ u32, u32, u32);
+static void e1000_rar_set_vf(struct e1000_hw *, u8 *, u32);
+static s32 e1000_read_mac_addr_vf(struct e1000_hw *);
+static s32 e1000_set_vfta_vf(struct e1000_hw *, u16, bool);
+
+/**
+ * e1000_init_mac_params_vf - Inits MAC params
+ * @hw: pointer to the HW structure
+ **/
+static s32 e1000_init_mac_params_vf(struct e1000_hw *hw)
+{
+ struct e1000_mac_info *mac = &hw->mac;
+
+ /* VF's have no MTA Registers - PF feature only */
+ mac->mta_reg_count = 128;
+ /* VF's have no access to RAR entries */
+ mac->rar_entry_count = 1;
+
+ /* Function pointers */
+ /* reset */
+ mac->ops.reset_hw = e1000_reset_hw_vf;
+ /* hw initialization */
+ mac->ops.init_hw = e1000_init_hw_vf;
+ /* check for link */
+ mac->ops.check_for_link = e1000_check_for_link_vf;
+ /* link info */
+ mac->ops.get_link_up_info = e1000_get_link_up_info_vf;
+ /* multicast address update */
+ mac->ops.update_mc_addr_list = e1000_update_mc_addr_list_vf;
+ /* set mac address */
+ mac->ops.rar_set = e1000_rar_set_vf;
+ /* read mac address */
+ mac->ops.read_mac_addr = e1000_read_mac_addr_vf;
+ /* set vlan filter table array */
+ mac->ops.set_vfta = e1000_set_vfta_vf;
+
+ return E1000_SUCCESS;
+}
+
+/**
+ * e1000_init_function_pointers_vf - Inits function pointers
+ * @hw: pointer to the HW structure
+ **/
+void e1000_init_function_pointers_vf(struct e1000_hw *hw)
+{
+ hw->mac.ops.init_params = e1000_init_mac_params_vf;
+ hw->mbx.ops.init_params = e1000_init_mbx_params_vf;
+}
+
+/**
+ * e1000_get_link_up_info_vf - Gets link info.
+ * @hw: pointer to the HW structure
+ * @speed: pointer to 16 bit value to store link speed.
+ * @duplex: pointer to 16 bit value to store duplex.
+ *
+ * Since we cannot read the PHY and get accurate link info, we must rely upon
+ * the status register's data which is often stale and inaccurate.
+ **/
+static s32 e1000_get_link_up_info_vf(struct e1000_hw *hw, u16 *speed,
+ u16 *duplex)
+{
+ s32 status;
+
+ status = er32(STATUS);
+ if (status & E1000_STATUS_SPEED_1000)
+ *speed = SPEED_1000;
+ else if (status & E1000_STATUS_SPEED_100)
+ *speed = SPEED_100;
+ else
+ *speed = SPEED_10;
+
+ if (status & E1000_STATUS_FD)
+ *duplex = FULL_DUPLEX;
+ else
+ *duplex = HALF_DUPLEX;
+
+ return E1000_SUCCESS;
+}
+
+/**
+ * e1000_reset_hw_vf - Resets the HW
+ * @hw: pointer to the HW structure
+ *
+ * VF's provide a function level reset. This is done using bit 26 of ctrl_reg.
+ * This is all the reset we can perform on a VF.
+ **/
+static s32 e1000_reset_hw_vf(struct e1000_hw *hw)
+{
+ struct e1000_mbx_info *mbx = &hw->mbx;
+ u32 timeout = E1000_VF_INIT_TIMEOUT;
+ u32 ret_val = -E1000_ERR_MAC_INIT;
+ u32 msgbuf[3];
+ u8 *addr = (u8 *)(&msgbuf[1]);
+ u32 ctrl;
+
+ /* assert VF queue/interrupt reset */
+ ctrl = er32(CTRL);
+ ew32(CTRL, ctrl | E1000_CTRL_RST);
+
+ /* we cannot initialize while the RSTI / RSTD bits are asserted */
+ while (!mbx->ops.check_for_rst(hw) && timeout) {
+ timeout--;
+ udelay(5);
+ }
+
+ if (timeout) {
+ /* mailbox timeout can now become active */
+ mbx->timeout = E1000_VF_MBX_INIT_TIMEOUT;
+
+ /* notify PF of VF reset completion */
+ msgbuf[0] = E1000_VF_RESET;
+ mbx->ops.write_posted(hw, msgbuf, 1);
+
+ msleep(10);
+
+ /* set our "perm_addr" based on info provided by PF */
+ ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
+ if (!ret_val) {
+ if (msgbuf[0] == (E1000_VF_RESET |
+ E1000_VT_MSGTYPE_ACK))
+ memcpy(hw->mac.perm_addr, addr, ETH_ALEN);
+ else
+ ret_val = -E1000_ERR_MAC_INIT;
+ }
+ }
+
+ return ret_val;
+}
+
+/**
+ * e1000_init_hw_vf - Inits the HW
+ * @hw: pointer to the HW structure
+ *
+ * Not much to do here except clear the PF Reset indication if there is one.
+ **/
+static s32 e1000_init_hw_vf(struct e1000_hw *hw)
+{
+ /* attempt to set and restore our mac address */
+ e1000_rar_set_vf(hw, hw->mac.addr, 0);
+
+ return E1000_SUCCESS;
+}
+
+/**
+ * e1000_hash_mc_addr_vf - Generate a multicast hash value
+ * @hw: pointer to the HW structure
+ * @mc_addr: pointer to a multicast address
+ *
+ * Generates a multicast address hash value which is used to determine
+ * the multicast filter table array address and new table value. See
+ * e1000_mta_set_generic()
+ **/
+static u32 e1000_hash_mc_addr_vf(struct e1000_hw *hw, u8 *mc_addr)
+{
+ u32 hash_value, hash_mask;
+ u8 bit_shift = 0;
+
+ /* Register count multiplied by bits per register */
+ hash_mask = (hw->mac.mta_reg_count * 32) - 1;
+
+ /* The bit_shift is the number of left-shifts
+ * where 0xFF would still fall within the hash mask.
+ */
+ while (hash_mask >> bit_shift != 0xFF)
+ bit_shift++;
+
+ hash_value = hash_mask & (((mc_addr[4] >> (8 - bit_shift)) |
+ (((u16)mc_addr[5]) << bit_shift)));
+
+ return hash_value;
+}
+
+/**
+ * e1000_update_mc_addr_list_vf - Update Multicast addresses
+ * @hw: pointer to the HW structure
+ * @mc_addr_list: array of multicast addresses to program
+ * @mc_addr_count: number of multicast addresses to program
+ * @rar_used_count: the first RAR register free to program
+ * @rar_count: total number of supported Receive Address Registers
+ *
+ * Updates the Receive Address Registers and Multicast Table Array.
+ * The caller must have a packed mc_addr_list of multicast addresses.
+ * The parameter rar_count will usually be hw->mac.rar_entry_count
+ * unless there are workarounds that change this.
+ **/
+static void e1000_update_mc_addr_list_vf(struct e1000_hw *hw,
+ u8 *mc_addr_list, u32 mc_addr_count,
+ u32 rar_used_count, u32 rar_count)
+{
+ struct e1000_mbx_info *mbx = &hw->mbx;
+ u32 msgbuf[E1000_VFMAILBOX_SIZE];
+ u16 *hash_list = (u16 *)&msgbuf[1];
+ u32 hash_value;
+ u32 cnt, i;
+
+ /* Each entry in the list uses 1 16 bit word. We have 30
+ * 16 bit words available in our HW msg buffer (minus 1 for the
+ * msg type). That's 30 hash values if we pack 'em right. If
+ * there are more than 30 MC addresses to add then punt the
+ * extras for now and then add code to handle more than 30 later.
+ * It would be unusual for a server to request that many multi-cast
+ * addresses except for in large enterprise network environments.
+ */
+
+ cnt = (mc_addr_count > 30) ? 30 : mc_addr_count;
+ msgbuf[0] = E1000_VF_SET_MULTICAST;
+ msgbuf[0] |= cnt << E1000_VT_MSGINFO_SHIFT;
+
+ for (i = 0; i < cnt; i++) {
+ hash_value = e1000_hash_mc_addr_vf(hw, mc_addr_list);
+ hash_list[i] = hash_value & 0x0FFFF;
+ mc_addr_list += ETH_ALEN;
+ }
+
+ mbx->ops.write_posted(hw, msgbuf, E1000_VFMAILBOX_SIZE);
+}
+
+/**
+ * e1000_set_vfta_vf - Set/Unset vlan filter table address
+ * @hw: pointer to the HW structure
+ * @vid: determines the vfta register and bit to set/unset
+ * @set: if true then set bit, else clear bit
+ **/
+static s32 e1000_set_vfta_vf(struct e1000_hw *hw, u16 vid, bool set)
+{
+ struct e1000_mbx_info *mbx = &hw->mbx;
+ u32 msgbuf[2];
+ s32 err;
+
+ msgbuf[0] = E1000_VF_SET_VLAN;
+ msgbuf[1] = vid;
+ /* Setting the 8 bit field MSG INFO to true indicates "add" */
+ if (set)
+ msgbuf[0] |= 1 << E1000_VT_MSGINFO_SHIFT;
+
+ mbx->ops.write_posted(hw, msgbuf, 2);
+
+ err = mbx->ops.read_posted(hw, msgbuf, 2);
+
+ msgbuf[0] &= ~E1000_VT_MSGTYPE_CTS;
+
+ /* if nacked the vlan was rejected */
+ if (!err && (msgbuf[0] == (E1000_VF_SET_VLAN | E1000_VT_MSGTYPE_NACK)))
+ err = -E1000_ERR_MAC_INIT;
+
+ return err;
+}
+
+/**
+ * e1000_rlpml_set_vf - Set the maximum receive packet length
+ * @hw: pointer to the HW structure
+ * @max_size: value to assign to max frame size
+ **/
+void e1000_rlpml_set_vf(struct e1000_hw *hw, u16 max_size)
+{
+ struct e1000_mbx_info *mbx = &hw->mbx;
+ u32 msgbuf[2];
+
+ msgbuf[0] = E1000_VF_SET_LPE;
+ msgbuf[1] = max_size;
+
+ mbx->ops.write_posted(hw, msgbuf, 2);
+}
+
+/**
+ * e1000_rar_set_vf - set device MAC address
+ * @hw: pointer to the HW structure
+ * @addr: pointer to the receive address
+ * @index: receive address array register
+ **/
+static void e1000_rar_set_vf(struct e1000_hw *hw, u8 *addr, u32 index)
+{
+ struct e1000_mbx_info *mbx = &hw->mbx;
+ u32 msgbuf[3];
+ u8 *msg_addr = (u8 *)(&msgbuf[1]);
+ s32 ret_val;
+
+ memset(msgbuf, 0, 12);
+ msgbuf[0] = E1000_VF_SET_MAC_ADDR;
+ memcpy(msg_addr, addr, ETH_ALEN);
+ ret_val = mbx->ops.write_posted(hw, msgbuf, 3);
+
+ if (!ret_val)
+ ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
+
+ msgbuf[0] &= ~E1000_VT_MSGTYPE_CTS;
+
+ /* if nacked the address was rejected, use "perm_addr" */
+ if (!ret_val &&
+ (msgbuf[0] == (E1000_VF_SET_MAC_ADDR | E1000_VT_MSGTYPE_NACK)))
+ e1000_read_mac_addr_vf(hw);
+}
+
+/**
+ * e1000_read_mac_addr_vf - Read device MAC address
+ * @hw: pointer to the HW structure
+ **/
+static s32 e1000_read_mac_addr_vf(struct e1000_hw *hw)
+{
+ memcpy(hw->mac.addr, hw->mac.perm_addr, ETH_ALEN);
+
+ return E1000_SUCCESS;
+}
+
+/**
+ * e1000_check_for_link_vf - Check for link for a virtual interface
+ * @hw: pointer to the HW structure
+ *
+ * Checks to see if the underlying PF is still talking to the VF and
+ * if it is then it reports the link state to the hardware, otherwise
+ * it reports link down and returns an error.
+ **/
+static s32 e1000_check_for_link_vf(struct e1000_hw *hw)
+{
+ struct e1000_mbx_info *mbx = &hw->mbx;
+ struct e1000_mac_info *mac = &hw->mac;
+ s32 ret_val = E1000_SUCCESS;
+ u32 in_msg = 0;
+
+ /* We only want to run this if there has been a rst asserted.
+ * in this case that could mean a link change, device reset,
+ * or a virtual function reset
+ */
+
+ /* If we were hit with a reset or timeout drop the link */
+ if (!mbx->ops.check_for_rst(hw) || !mbx->timeout)
+ mac->get_link_status = true;
+
+ if (!mac->get_link_status)
+ goto out;
+
+ /* if link status is down no point in checking to see if PF is up */
+ if (!(er32(STATUS) & E1000_STATUS_LU))
+ goto out;
+
+ /* if the read failed it could just be a mailbox collision, best wait
+ * until we are called again and don't report an error
+ */
+ if (mbx->ops.read(hw, &in_msg, 1))
+ goto out;
+
+ /* if incoming message isn't clear to send we are waiting on response */
+ if (!(in_msg & E1000_VT_MSGTYPE_CTS)) {
+ /* msg is not CTS and is NACK we must have lost CTS status */
+ if (in_msg & E1000_VT_MSGTYPE_NACK)
+ ret_val = -E1000_ERR_MAC_INIT;
+ goto out;
+ }
+
+ /* the PF is talking, if we timed out in the past we reinit */
+ if (!mbx->timeout) {
+ ret_val = -E1000_ERR_MAC_INIT;
+ goto out;
+ }
+
+ /* if we passed all the tests above then the link is up and we no
+ * longer need to check for link
+ */
+ mac->get_link_status = false;
+
+out:
+ return ret_val;
+}
+
diff --git a/drivers/net/ethernet/intel/igbvf/vf.h b/drivers/net/ethernet/intel/igbvf/vf.h
new file mode 100644
index 0000000..0f1eca6
--- /dev/null
+++ b/drivers/net/ethernet/intel/igbvf/vf.h
@@ -0,0 +1,263 @@
+/*******************************************************************************
+
+ Intel(R) 82576 Virtual Function Linux driver
+ Copyright(c) 2009 - 2012 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#ifndef _E1000_VF_H_
+#define _E1000_VF_H_
+
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/if_ether.h>
+
+#include "regs.h"
+#include "defines.h"
+
+struct e1000_hw;
+
+#define E1000_DEV_ID_82576_VF 0x10CA
+#define E1000_DEV_ID_I350_VF 0x1520
+#define E1000_REVISION_0 0
+#define E1000_REVISION_1 1
+#define E1000_REVISION_2 2
+#define E1000_REVISION_3 3
+#define E1000_REVISION_4 4
+
+#define E1000_FUNC_0 0
+#define E1000_FUNC_1 1
+
+/* Receive Address Register Count
+ * Number of high/low register pairs in the RAR. The RAR (Receive Address
+ * Registers) holds the directed and multicast addresses that we monitor.
+ * These entries are also used for MAC-based filtering.
+ */
+#define E1000_RAR_ENTRIES_VF 1
+
+/* Receive Descriptor - Advanced */
+union e1000_adv_rx_desc {
+ struct {
+ u64 pkt_addr; /* Packet buffer address */
+ u64 hdr_addr; /* Header buffer address */
+ } read;
+ struct {
+ struct {
+ union {
+ u32 data;
+ struct {
+ u16 pkt_info; /* RSS/Packet type */
+ /* Split Header, hdr buffer length */
+ u16 hdr_info;
+ } hs_rss;
+ } lo_dword;
+ union {
+ u32 rss; /* RSS Hash */
+ struct {
+ u16 ip_id; /* IP id */
+ u16 csum; /* Packet Checksum */
+ } csum_ip;
+ } hi_dword;
+ } lower;
+ struct {
+ u32 status_error; /* ext status/error */
+ u16 length; /* Packet length */
+ u16 vlan; /* VLAN tag */
+ } upper;
+ } wb; /* writeback */
+};
+
+#define E1000_RXDADV_HDRBUFLEN_MASK 0x7FE0
+#define E1000_RXDADV_HDRBUFLEN_SHIFT 5
+
+/* Transmit Descriptor - Advanced */
+union e1000_adv_tx_desc {
+ struct {
+ u64 buffer_addr; /* Address of descriptor's data buf */
+ u32 cmd_type_len;
+ u32 olinfo_status;
+ } read;
+ struct {
+ u64 rsvd; /* Reserved */
+ u32 nxtseq_seed;
+ u32 status;
+ } wb;
+};
+
+/* Adv Transmit Descriptor Config Masks */
+#define E1000_ADVTXD_DTYP_CTXT 0x00200000 /* Advanced Context Descriptor */
+#define E1000_ADVTXD_DTYP_DATA 0x00300000 /* Advanced Data Descriptor */
+#define E1000_ADVTXD_DCMD_EOP 0x01000000 /* End of Packet */
+#define E1000_ADVTXD_DCMD_IFCS 0x02000000 /* Insert FCS (Ethernet CRC) */
+#define E1000_ADVTXD_DCMD_RS 0x08000000 /* Report Status */
+#define E1000_ADVTXD_DCMD_DEXT 0x20000000 /* Descriptor extension (1=Adv) */
+#define E1000_ADVTXD_DCMD_VLE 0x40000000 /* VLAN pkt enable */
+#define E1000_ADVTXD_DCMD_TSE 0x80000000 /* TCP Seg enable */
+#define E1000_ADVTXD_PAYLEN_SHIFT 14 /* Adv desc PAYLEN shift */
+
+/* Context descriptors */
+struct e1000_adv_tx_context_desc {
+ u32 vlan_macip_lens;
+ u32 seqnum_seed;
+ u32 type_tucmd_mlhl;
+ u32 mss_l4len_idx;
+};
+
+#define E1000_ADVTXD_MACLEN_SHIFT 9 /* Adv ctxt desc mac len shift */
+#define E1000_ADVTXD_TUCMD_IPV4 0x00000400 /* IP Packet Type: 1=IPv4 */
+#define E1000_ADVTXD_TUCMD_L4T_TCP 0x00000800 /* L4 Packet TYPE of TCP */
+#define E1000_ADVTXD_L4LEN_SHIFT 8 /* Adv ctxt L4LEN shift */
+#define E1000_ADVTXD_MSS_SHIFT 16 /* Adv ctxt MSS shift */
+
+enum e1000_mac_type {
+ e1000_undefined = 0,
+ e1000_vfadapt,
+ e1000_vfadapt_i350,
+ e1000_num_macs /* List is 1-based, so subtract 1 for true count. */
+};
+
+struct e1000_vf_stats {
+ u64 base_gprc;
+ u64 base_gptc;
+ u64 base_gorc;
+ u64 base_gotc;
+ u64 base_mprc;
+ u64 base_gotlbc;
+ u64 base_gptlbc;
+ u64 base_gorlbc;
+ u64 base_gprlbc;
+
+ u32 last_gprc;
+ u32 last_gptc;
+ u32 last_gorc;
+ u32 last_gotc;
+ u32 last_mprc;
+ u32 last_gotlbc;
+ u32 last_gptlbc;
+ u32 last_gorlbc;
+ u32 last_gprlbc;
+
+ u64 gprc;
+ u64 gptc;
+ u64 gorc;
+ u64 gotc;
+ u64 mprc;
+ u64 gotlbc;
+ u64 gptlbc;
+ u64 gorlbc;
+ u64 gprlbc;
+};
+
+#include "mbx.h"
+
+struct e1000_mac_operations {
+ /* Function pointers for the MAC. */
+ s32 (*init_params)(struct e1000_hw *);
+ s32 (*check_for_link)(struct e1000_hw *);
+ void (*clear_vfta)(struct e1000_hw *);
+ s32 (*get_bus_info)(struct e1000_hw *);
+ s32 (*get_link_up_info)(struct e1000_hw *, u16 *, u16 *);
+ void (*update_mc_addr_list)(struct e1000_hw *, u8 *, u32, u32, u32);
+ s32 (*reset_hw)(struct e1000_hw *);
+ s32 (*init_hw)(struct e1000_hw *);
+ s32 (*setup_link)(struct e1000_hw *);
+ void (*write_vfta)(struct e1000_hw *, u32, u32);
+ void (*mta_set)(struct e1000_hw *, u32);
+ void (*rar_set)(struct e1000_hw *, u8*, u32);
+ s32 (*read_mac_addr)(struct e1000_hw *);
+ s32 (*set_vfta)(struct e1000_hw *, u16, bool);
+};
+
+struct e1000_mac_info {
+ struct e1000_mac_operations ops;
+ u8 addr[6];
+ u8 perm_addr[6];
+
+ enum e1000_mac_type type;
+
+ u16 mta_reg_count;
+ u16 rar_entry_count;
+
+ bool get_link_status;
+};
+
+struct e1000_mbx_operations {
+ s32 (*init_params)(struct e1000_hw *hw);
+ s32 (*read)(struct e1000_hw *, u32 *, u16);
+ s32 (*write)(struct e1000_hw *, u32 *, u16);
+ s32 (*read_posted)(struct e1000_hw *, u32 *, u16);
+ s32 (*write_posted)(struct e1000_hw *, u32 *, u16);
+ s32 (*check_for_msg)(struct e1000_hw *);
+ s32 (*check_for_ack)(struct e1000_hw *);
+ s32 (*check_for_rst)(struct e1000_hw *);
+};
+
+struct e1000_mbx_stats {
+ u32 msgs_tx;
+ u32 msgs_rx;
+
+ u32 acks;
+ u32 reqs;
+ u32 rsts;
+};
+
+struct e1000_mbx_info {
+ struct e1000_mbx_operations ops;
+ struct e1000_mbx_stats stats;
+ u32 timeout;
+ u32 usec_delay;
+ u16 size;
+};
+
+struct e1000_dev_spec_vf {
+ u32 vf_number;
+ u32 v2p_mailbox;
+};
+
+struct e1000_hw {
+ void *back;
+
+ u8 __iomem *hw_addr;
+ u8 __iomem *flash_address;
+ unsigned long io_base;
+
+ struct e1000_mac_info mac;
+ struct e1000_mbx_info mbx;
+
+ union {
+ struct e1000_dev_spec_vf vf;
+ } dev_spec;
+
+ u16 device_id;
+ u16 subsystem_vendor_id;
+ u16 subsystem_device_id;
+ u16 vendor_id;
+
+ u8 revision_id;
+};
+
+/* These functions must be implemented by drivers */
+void e1000_rlpml_set_vf(struct e1000_hw *, u16);
+void e1000_init_function_pointers_vf(struct e1000_hw *hw);
+
+#endif /* _E1000_VF_H_ */