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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;
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