8428ebd8e8
* this adds sflash support for ssb devices * the flash is now a platform device * minor updates SVN-Revision: 27902
194 lines
6.3 KiB
Diff
194 lines
6.3 KiB
Diff
From 4f314ac9edbc80897f158fdb4e1b1de8a2d0d432 Mon Sep 17 00:00:00 2001
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From: Hauke Mehrtens <hauke@hauke-m.de>
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Date: Sun, 24 Jul 2011 21:10:49 +0200
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Subject: [PATCH 16/26] brcm47xx: add common interface for sflash
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Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
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---
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arch/mips/bcm47xx/Makefile | 2 +-
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arch/mips/bcm47xx/bus.c | 94 ++++++++++++++++++++++++++++++
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arch/mips/bcm47xx/setup.c | 8 +++
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arch/mips/include/asm/mach-bcm47xx/bus.h | 37 ++++++++++++
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4 files changed, 140 insertions(+), 1 deletions(-)
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create mode 100644 arch/mips/bcm47xx/bus.c
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create mode 100644 arch/mips/include/asm/mach-bcm47xx/bus.h
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--- a/arch/mips/bcm47xx/Makefile
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+++ b/arch/mips/bcm47xx/Makefile
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@@ -3,5 +3,5 @@
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# under Linux.
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#
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-obj-y += gpio.o irq.o nvram.o prom.o serial.o setup.o time.o
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+obj-y += gpio.o irq.o nvram.o prom.o serial.o setup.o time.o bus.o
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obj-$(CONFIG_BCM47XX_SSB) += wgt634u.o
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--- /dev/null
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+++ b/arch/mips/bcm47xx/bus.c
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@@ -0,0 +1,94 @@
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+/*
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+ * BCM947xx nvram variable access
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+ *
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+ * Copyright (C) 2011 Hauke Mehrtens <hauke@hauke-m.de>
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License as published by the
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+ * Free Software Foundation; either version 2 of the License, or (at your
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+ * option) any later version.
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+ */
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+
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+#include <bus.h>
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+
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+static int bcm47xx_sflash_bcma_read(struct bcm47xx_sflash *dev, u32 offset, u32 len, u8 *buf)
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+{
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+ return bcma_sflash_read(dev->bcc, offset, len, buf);
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+}
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+
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+static int bcm47xx_sflash_bcma_poll(struct bcm47xx_sflash *dev, u32 offset)
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+{
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+ return bcma_sflash_poll(dev->bcc, offset);
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+}
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+
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+static int bcm47xx_sflash_bcma_write(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf)
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+{
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+ return bcma_sflash_write(dev->bcc, offset, len, buf);
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+}
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+
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+static int bcm47xx_sflash_bcma_erase(struct bcm47xx_sflash *dev, u32 offset)
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+{
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+ return bcma_sflash_erase(dev->bcc, offset);
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+}
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+
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+static int bcm47xx_sflash_bcma_commit(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf)
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+{
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+ return bcma_sflash_commit(dev->bcc, offset, len, buf);
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+}
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+
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+void bcm47xx_sflash_struct_bcma_init(struct bcm47xx_sflash *sflash, struct bcma_drv_cc *bcc)
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+{
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+ sflash->sflash_type = BCM47XX_BUS_TYPE_BCMA;
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+ sflash->bcc = bcc;
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+
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+ sflash->read = bcm47xx_sflash_bcma_read;
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+ sflash->poll = bcm47xx_sflash_bcma_poll;
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+ sflash->write = bcm47xx_sflash_bcma_write;
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+ sflash->erase = bcm47xx_sflash_bcma_erase;
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+ sflash->commit = bcm47xx_sflash_bcma_commit;
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+
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+ sflash->blocksize = bcc->sflash.blocksize;
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+ sflash->numblocks = bcc->sflash.numblocks;
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+ sflash->size = bcc->sflash.size;
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+}
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+
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+static int bcm47xx_sflash_ssb_read(struct bcm47xx_sflash *dev, u32 offset, u32 len, u8 *buf)
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+{
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+ return ssb_sflash_read(dev->scc, offset, len, buf);
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+}
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+
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+static int bcm47xx_sflash_ssb_poll(struct bcm47xx_sflash *dev, u32 offset)
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+{
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+ return ssb_sflash_poll(dev->scc, offset);
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+}
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+
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+static int bcm47xx_sflash_ssb_write(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf)
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+{
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+ return ssb_sflash_write(dev->scc, offset, len, buf);
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+}
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+
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+static int bcm47xx_sflash_ssb_erase(struct bcm47xx_sflash *dev, u32 offset)
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+{
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+ return ssb_sflash_erase(dev->scc, offset);
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+}
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+
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+static int bcm47xx_sflash_ssb_commit(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf)
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+{
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+ return ssb_sflash_commit(dev->scc, offset, len, buf);
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+}
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+
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+void bcm47xx_sflash_struct_ssb_init(struct bcm47xx_sflash *sflash, struct ssb_chipcommon *scc)
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+{
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+ sflash->sflash_type = BCM47XX_BUS_TYPE_SSB;
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+ sflash->scc = scc;
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+
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+ sflash->read = bcm47xx_sflash_ssb_read;
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+ sflash->poll = bcm47xx_sflash_ssb_poll;
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+ sflash->write = bcm47xx_sflash_ssb_write;
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+ sflash->erase = bcm47xx_sflash_ssb_erase;
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+ sflash->commit = bcm47xx_sflash_ssb_commit;
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+
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+ sflash->blocksize = scc->sflash.blocksize;
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+ sflash->numblocks = scc->sflash.numblocks;
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+ sflash->size = scc->sflash.size;
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+}
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--- a/arch/mips/bcm47xx/setup.c
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+++ b/arch/mips/bcm47xx/setup.c
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@@ -42,6 +42,8 @@ EXPORT_SYMBOL(bcm47xx_bus);
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enum bcm47xx_bus_type bcm47xx_bus_type;
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EXPORT_SYMBOL(bcm47xx_bus_type);
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+struct bcm47xx_sflash bcm47xx_sflash;
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+
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static void bcm47xx_machine_restart(char *command)
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{
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printk(KERN_ALERT "Please stand by while rebooting the system...\n");
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@@ -290,6 +292,9 @@ static void __init bcm47xx_register_ssb(
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if (err)
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panic("Failed to initialize SSB bus (err %d)\n", err);
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+ if (bcm47xx_bus.ssb.chipco.flash_type == SSB_SFLASH)
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+ bcm47xx_sflash_struct_ssb_init(&bcm47xx_sflash, &bcm47xx_bus.ssb.chipco);
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+
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mcore = &bcm47xx_bus.ssb.mipscore;
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if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
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if (strstr(buf, "console=ttyS1")) {
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@@ -314,6 +319,9 @@ static void __init bcm47xx_register_bcma
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err = bcma_host_soc_register(&bcm47xx_bus.bcma);
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if (err)
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panic("Failed to initialize BCMA bus (err %d)\n", err);
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+
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+ if (bcm47xx_bus.bcma.bus.drv_cc.flash_type == BCMA_SFLASH)
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+ bcm47xx_sflash_struct_bcma_init(&bcm47xx_sflash, &bcm47xx_bus.bcma.bus.drv_cc);
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}
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#endif
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--- /dev/null
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+++ b/arch/mips/include/asm/mach-bcm47xx/bus.h
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@@ -0,0 +1,37 @@
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+/*
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+ * BCM947xx nvram variable access
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+ *
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+ * Copyright (C) 2011 Hauke Mehrtens <hauke@hauke-m.de>
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License as published by the
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+ * Free Software Foundation; either version 2 of the License, or (at your
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+ * option) any later version.
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+ */
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+
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+#include <linux/ssb/ssb.h>
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+#include <linux/bcma/bcma.h>
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+#include <bcm47xx.h>
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+
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+struct bcm47xx_sflash {
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+ enum bcm47xx_bus_type sflash_type;
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+ union {
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+ struct ssb_chipcommon *scc;
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+ struct bcma_drv_cc *bcc;
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+ };
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+
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+ int (*read)(struct bcm47xx_sflash *dev, u32 offset, u32 len, u8 *buf);
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+ int (*poll)(struct bcm47xx_sflash *dev, u32 offset);
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+ int (*write)(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf);
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+ int (*erase)(struct bcm47xx_sflash *dev, u32 offset);
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+ int (*commit)(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf);
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+
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+ u32 blocksize; /* Block size */
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+ u32 numblocks; /* Number of blocks */
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+ u32 size; /* Total size in bytes */
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+};
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+
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+void bcm47xx_sflash_struct_bcma_init(struct bcm47xx_sflash *sflash, struct bcma_drv_cc *bcc);
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+void bcm47xx_sflash_struct_ssb_init(struct bcm47xx_sflash *sflash, struct ssb_chipcommon *scc);
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+
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+extern struct bcm47xx_sflash bcm47xx_sflash;
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