openwrt-xburst/target/linux/brcm47xx/patches-3.2/024-brcm47xx-add-common-interface-for-sflash.patch

From 4f314ac9edbc80897f158fdb4e1b1de8a2d0d432 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sun, 24 Jul 2011 21:10:49 +0200
Subject: [PATCH 16/26] brcm47xx: add common interface for sflash


Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
 arch/mips/bcm47xx/Makefile               |    2 +-
 arch/mips/bcm47xx/bus.c                  |   94 ++++++++++++++++++++++++++++++
 arch/mips/bcm47xx/setup.c                |    8 +++
 arch/mips/include/asm/mach-bcm47xx/bus.h |   37 ++++++++++++
 4 files changed, 140 insertions(+), 1 deletions(-)
 create mode 100644 arch/mips/bcm47xx/bus.c
 create mode 100644 arch/mips/include/asm/mach-bcm47xx/bus.h

--- a/arch/mips/bcm47xx/Makefile
+++ b/arch/mips/bcm47xx/Makefile
@@ -3,5 +3,5 @@
 # under Linux.
 #
 
-obj-y 				+= gpio.o irq.o nvram.o prom.o serial.o setup.o time.o
+obj-y 				+= gpio.o irq.o nvram.o prom.o serial.o setup.o time.o bus.o
 obj-$(CONFIG_BCM47XX_SSB)	+= wgt634u.o
--- /dev/null
+++ b/arch/mips/bcm47xx/bus.c
@@ -0,0 +1,94 @@
+/*
+ * BCM947xx nvram variable access
+ *
+ * Copyright (C) 2011 Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <bus.h>
+
+static int bcm47xx_sflash_bcma_read(struct bcm47xx_sflash *dev, u32 offset, u32 len, u8 *buf)
+{
+	return bcma_sflash_read(dev->bcc, offset, len, buf);
+}
+
+static int bcm47xx_sflash_bcma_poll(struct bcm47xx_sflash *dev, u32 offset)
+{
+	return bcma_sflash_poll(dev->bcc, offset);
+}
+
+static int bcm47xx_sflash_bcma_write(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf)
+{
+	return bcma_sflash_write(dev->bcc, offset, len, buf);
+}
+
+static int bcm47xx_sflash_bcma_erase(struct bcm47xx_sflash *dev, u32 offset)
+{
+	return bcma_sflash_erase(dev->bcc, offset);
+}
+
+static int bcm47xx_sflash_bcma_commit(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf)
+{
+	return bcma_sflash_commit(dev->bcc, offset, len, buf);
+}
+
+void bcm47xx_sflash_struct_bcma_init(struct bcm47xx_sflash *sflash, struct bcma_drv_cc *bcc)
+{
+	sflash->sflash_type = BCM47XX_BUS_TYPE_BCMA;
+	sflash->bcc = bcc;
+
+	sflash->read = bcm47xx_sflash_bcma_read;
+	sflash->poll = bcm47xx_sflash_bcma_poll;
+	sflash->write = bcm47xx_sflash_bcma_write;
+	sflash->erase = bcm47xx_sflash_bcma_erase;
+	sflash->commit = bcm47xx_sflash_bcma_commit;
+
+	sflash->blocksize = bcc->sflash.blocksize;
+	sflash->numblocks = bcc->sflash.numblocks;
+	sflash->size = bcc->sflash.size;
+}
+
+static int bcm47xx_sflash_ssb_read(struct bcm47xx_sflash *dev, u32 offset, u32 len, u8 *buf)
+{
+	return ssb_sflash_read(dev->scc, offset, len, buf);
+}
+
+static int bcm47xx_sflash_ssb_poll(struct bcm47xx_sflash *dev, u32 offset)
+{
+	return ssb_sflash_poll(dev->scc, offset);
+}
+
+static int bcm47xx_sflash_ssb_write(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf)
+{
+	return ssb_sflash_write(dev->scc, offset, len, buf);
+}
+
+static int bcm47xx_sflash_ssb_erase(struct bcm47xx_sflash *dev, u32 offset)
+{
+	return ssb_sflash_erase(dev->scc, offset);
+}
+
+static int bcm47xx_sflash_ssb_commit(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf)
+{
+	return ssb_sflash_commit(dev->scc, offset, len, buf);
+}
+
+void bcm47xx_sflash_struct_ssb_init(struct bcm47xx_sflash *sflash, struct ssb_chipcommon *scc)
+{
+	sflash->sflash_type = BCM47XX_BUS_TYPE_SSB;
+	sflash->scc = scc;
+
+	sflash->read = bcm47xx_sflash_ssb_read;
+	sflash->poll = bcm47xx_sflash_ssb_poll;
+	sflash->write = bcm47xx_sflash_ssb_write;
+	sflash->erase = bcm47xx_sflash_ssb_erase;
+	sflash->commit = bcm47xx_sflash_ssb_commit;
+
+	sflash->blocksize = scc->sflash.blocksize;
+	sflash->numblocks = scc->sflash.numblocks;
+	sflash->size = scc->sflash.size;
+}
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -43,6 +43,8 @@ EXPORT_SYMBOL(bcm47xx_bus);
 enum bcm47xx_bus_type bcm47xx_bus_type;
 EXPORT_SYMBOL(bcm47xx_bus_type);
 
+struct bcm47xx_sflash bcm47xx_sflash;
+
 static void bcm47xx_machine_restart(char *command)
 {
 	printk(KERN_ALERT "Please stand by while rebooting the system...\n");
@@ -291,6 +293,9 @@ static void __init bcm47xx_register_ssb(
 	if (err)
 		panic("Failed to initialize SSB bus (err %d)\n", err);
 
+	if (bcm47xx_bus.ssb.chipco.flash_type == SSB_SFLASH)
+		bcm47xx_sflash_struct_ssb_init(&bcm47xx_sflash, &bcm47xx_bus.ssb.chipco);
+
 	mcore = &bcm47xx_bus.ssb.mipscore;
 	if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
 		if (strstr(buf, "console=ttyS1")) {
@@ -315,6 +320,9 @@ static void __init bcm47xx_register_bcma
 	err = bcma_host_soc_register(&bcm47xx_bus.bcma);
 	if (err)
 		panic("Failed to initialize BCMA bus (err %d)\n", err);
+
+	if (bcm47xx_bus.bcma.bus.drv_cc.flash_type == BCMA_SFLASH)
+		bcm47xx_sflash_struct_bcma_init(&bcm47xx_sflash, &bcm47xx_bus.bcma.bus.drv_cc);
 }
 #endif
 
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm47xx/bus.h
@@ -0,0 +1,37 @@
+/*
+ * BCM947xx nvram variable access
+ *
+ * Copyright (C) 2011 Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/ssb/ssb.h>
+#include <linux/bcma/bcma.h>
+#include <bcm47xx.h>
+
+struct bcm47xx_sflash {
+	enum bcm47xx_bus_type sflash_type;
+	union {
+		struct ssb_chipcommon *scc;
+		struct bcma_drv_cc *bcc;
+	};
+
+	int (*read)(struct bcm47xx_sflash *dev, u32 offset, u32 len, u8 *buf);
+	int (*poll)(struct bcm47xx_sflash *dev, u32 offset);
+	int (*write)(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf);
+	int (*erase)(struct bcm47xx_sflash *dev, u32 offset);
+	int (*commit)(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf);
+
+	u32 blocksize;		/* Block size */
+	u32 numblocks;		/* Number of blocks */
+	u32 size;		/* Total size in bytes */
+};
+
+void bcm47xx_sflash_struct_bcma_init(struct bcm47xx_sflash *sflash, struct bcma_drv_cc *bcc);
+void bcm47xx_sflash_struct_ssb_init(struct bcm47xx_sflash *sflash, struct ssb_chipcommon *scc);
+
+extern struct bcm47xx_sflash bcm47xx_sflash;