[PATCH] New PowerPC 4xx on-chip ethernet controller driver

This patch replaces current PowerPC 4xx EMAC driver with
new, re-written from the scratch version. This patch is quite big
(~234K) because there is virtualy 0% of common code between old and
new version.

New driver uses NAPI, it solves stability problems under heavy packet
load and low memory, corrects chip register access and fixes numerous
small bugs I don't even remember now.

This patch has been tested on all supported in 2.6 PPC 4xx boards.
It's been used in production for almost a year now on custom
4xx hardware. PPC32 specific parts are already upstream.

Patch was acked by the current EMAC driver maintainer (Matt Porter). I
will be maintaining this new version.

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
--

 Kconfig                   |   72
 ibm_emac/Makefile         |   13
 ibm_emac/ibm_emac.h       |  418 +++--
 ibm_emac/ibm_emac_core.c  | 3414 ++++++++++++++++++++++++----------------------
 ibm_emac/ibm_emac_core.h  |  313 ++--
 ibm_emac/ibm_emac_debug.c |  377 ++---
 ibm_emac/ibm_emac_debug.h |   63
 ibm_emac/ibm_emac_mal.c   |  674 +++++----
 ibm_emac/ibm_emac_mal.h   |  336 +++-
 ibm_emac/ibm_emac_phy.c   |  335 ++--
 ibm_emac/ibm_emac_phy.h   |  105 -
 ibm_emac/ibm_emac_rgmii.c |  201 ++
 ibm_emac/ibm_emac_rgmii.h |   68
 ibm_emac/ibm_emac_tah.c   |  111 +
 ibm_emac/ibm_emac_tah.h   |   96 -
 ibm_emac/ibm_emac_zmii.c  |  255 +++
 ibm_emac/ibm_emac_zmii.h  |  114 -
 17 files changed, 4114 insertions(+), 2851 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 68 insertions, 28 deletions

diff --git a/drivers/net/ibm_emac/ibm_emac_tah.h b/drivers/net/ibm_emac/ibm_emac_tah.h
index ecfc69805521..9299b5dd7eb1 100644
--- a/drivers/net/ibm_emac/ibm_emac_tah.h
+++ b/drivers/net/ibm_emac/ibm_emac_tah.h
@@ -1,9 +1,13 @@
 /*
- * Defines for the IBM TAH
+ * drivers/net/ibm_emac/ibm_emac_tah.h
+ *
+ * Driver for PowerPC 4xx on-chip ethernet controller, TAH support.
  *
  * Copyright 2004 MontaVista Software, Inc.
  * Matt Porter <mporter@kernel.crashing.org>
  *
+ * Copyright (c) 2005 Eugene Surovegin <ebs@ebshome.net>
+ *
  * This program is free software; you can redistribute  it and/or modify it
  * under  the terms of  the GNU General  Public License as published by the
  * Free Software Foundation;  either version 2 of the  License, or (at your
@@ -13,36 +17,72 @@
 #ifndef _IBM_EMAC_TAH_H
 #define _IBM_EMAC_TAH_H
 
+#include <linux/config.h>
+#include <linux/init.h>
+#include <asm/ocp.h>
+
 /* TAH */
-typedef struct tah_regs {
-	u32 tah_revid;
+struct tah_regs {
+	u32 revid;
 	u32 pad[3];
-	u32 tah_mr;
-	u32 tah_ssr0;
-	u32 tah_ssr1;
-	u32 tah_ssr2;
-	u32 tah_ssr3;
-	u32 tah_ssr4;
-	u32 tah_ssr5;
-	u32 tah_tsr;
-} tah_t;
+	u32 mr;
+	u32 ssr0;
+	u32 ssr1;
+	u32 ssr2;
+	u32 ssr3;
+	u32 ssr4;
+	u32 ssr5;
+	u32 tsr;
+};
 
 /* TAH engine */
-#define TAH_MR_CVR			0x80000000
-#define TAH_MR_SR			0x40000000
-#define TAH_MR_ST_256			0x01000000
-#define TAH_MR_ST_512			0x02000000
-#define TAH_MR_ST_768			0x03000000
-#define TAH_MR_ST_1024			0x04000000
-#define TAH_MR_ST_1280			0x05000000
-#define TAH_MR_ST_1536			0x06000000
-#define TAH_MR_TFS_16KB			0x00000000
-#define TAH_MR_TFS_2KB			0x00200000
-#define TAH_MR_TFS_4KB			0x00400000
-#define TAH_MR_TFS_6KB			0x00600000
-#define TAH_MR_TFS_8KB			0x00800000
-#define TAH_MR_TFS_10KB			0x00a00000
-#define TAH_MR_DTFP			0x00100000
-#define TAH_MR_DIG			0x00080000
+#define TAH_MR_CVR		0x80000000
+#define TAH_MR_SR		0x40000000
+#define TAH_MR_ST_256		0x01000000
+#define TAH_MR_ST_512		0x02000000
+#define TAH_MR_ST_768		0x03000000
+#define TAH_MR_ST_1024		0x04000000
+#define TAH_MR_ST_1280		0x05000000
+#define TAH_MR_ST_1536		0x06000000
+#define TAH_MR_TFS_16KB		0x00000000
+#define TAH_MR_TFS_2KB		0x00200000
+#define TAH_MR_TFS_4KB		0x00400000
+#define TAH_MR_TFS_6KB		0x00600000
+#define TAH_MR_TFS_8KB		0x00800000
+#define TAH_MR_TFS_10KB		0x00a00000
+#define TAH_MR_DTFP		0x00100000
+#define TAH_MR_DIG		0x00080000
+
+#ifdef CONFIG_IBM_EMAC_TAH
+int tah_attach(void *emac) __init;
+
+void __tah_fini(struct ocp_device *ocpdev) __exit;
+static inline void tah_fini(struct ocp_device *ocpdev)
+{
+	if (ocpdev)
+		__tah_fini(ocpdev);
+}
+
+void __tah_reset(struct ocp_device *ocpdev);
+static inline void tah_reset(struct ocp_device *ocpdev)
+{
+	if (ocpdev)
+		__tah_reset(ocpdev);
+}
+
+int __tah_get_regs_len(struct ocp_device *ocpdev);
+static inline int tah_get_regs_len(struct ocp_device *ocpdev)
+{
+	return ocpdev ? __tah_get_regs_len(ocpdev) : 0;
+}
+
+void *tah_dump_regs(struct ocp_device *ocpdev, void *buf);
+#else
+# define tah_attach(x)		0
+# define tah_fini(x)		((void)0)
+# define tah_reset(x)		((void)0)
+# define tah_get_regs_len(x)	0
+# define tah_dump_regs(x,buf)	(buf)
+#endif				/* !CONFIG_IBM_EMAC_TAH */
 
 #endif				/* _IBM_EMAC_TAH_H */