cpsw: add driver for cpsw ethernet device
CPSW is an on-chip ethernet switch that is found on various SoCs from Texas
Instruments. This patch adds a simple driver (based on the Linux driver) for
this hardware module.
This patch also adds support to clean and flush dcache during packet send
and receive.
Changes by Sandhya: Added support to clean and flush dcache during packet
send/receive and added timeouts.
Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Chandan Nath <chandan.nath@ti.com>
Signed-off-by: Satyanarayana, Sandhya <sandhya.satyanarayana@ti.com>
[Ilya: Cleaned cache handling, some style cleanup, some small
fixes, use of internal RAM for descriptors]
Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
diff --git a/include/cpsw.h b/include/cpsw.h
new file mode 100644
index 0000000..296b0e5
--- /dev/null
+++ b/include/cpsw.h
@@ -0,0 +1,51 @@
+/*
+ * CPSW Ethernet Switch Driver
+ *
+ * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _CPSW_H_
+#define _CPSW_H_
+
+struct cpsw_slave_data {
+ u32 slave_reg_ofs;
+ u32 sliver_reg_ofs;
+ int phy_id;
+ int phy_if;
+};
+
+enum {
+ CPSW_CTRL_VERSION_1 = 0,
+ CPSW_CTRL_VERSION_2 /* am33xx like devices */
+};
+
+struct cpsw_platform_data {
+ u32 mdio_base;
+ u32 cpsw_base;
+ int mdio_div;
+ int channels; /* number of cpdma channels (symmetric) */
+ u32 cpdma_reg_ofs; /* cpdma register offset */
+ int slaves; /* number of slave cpgmac ports */
+ u32 ale_reg_ofs; /* address lookup engine reg offset */
+ int ale_entries; /* ale table size */
+ u32 host_port_reg_ofs; /* cpdma host port registers */
+ u32 hw_stats_reg_ofs; /* cpsw hw stats counters */
+ u32 mac_control;
+ struct cpsw_slave_data *slave_data;
+ void (*control)(int enabled);
+ u32 host_port_num;
+ u8 version;
+};
+
+int cpsw_register(struct cpsw_platform_data *data);
+
+#endif /* _CPSW_H_ */