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

   1 From 4f314ac9edbc80897f158fdb4e1b1de8a2d0d432 Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Sun, 24 Jul 2011 21:10:49 +0200
   4 Subject: [PATCH 16/26] brcm47xx: add common interface for sflash
   5
   6
   7 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
   8 ---
   9  arch/mips/bcm47xx/Makefile               |    2 +-
  10  arch/mips/bcm47xx/bus.c                  |   94 ++++++++++++++++++++++++++++++
  11  arch/mips/bcm47xx/setup.c                |    8 +++
  12  arch/mips/include/asm/mach-bcm47xx/bus.h |   37 ++++++++++++
  13  4 files changed, 140 insertions(+), 1 deletions(-)
  14  create mode 100644 arch/mips/bcm47xx/bus.c
  15  create mode 100644 arch/mips/include/asm/mach-bcm47xx/bus.h
  16
  17 --- a/arch/mips/bcm47xx/Makefile
  18 +++ b/arch/mips/bcm47xx/Makefile
  19 @@ -3,5 +3,5 @@
  20  # under Linux.
  21  #
  22
  23 -obj-y                          += gpio.o irq.o nvram.o prom.o serial.o setup.o time.o
  24 +obj-y                          += gpio.o irq.o nvram.o prom.o serial.o setup.o time.o bus.o
  25  obj-$(CONFIG_BCM47XX_SSB)      += wgt634u.o
  26 --- /dev/null
  27 +++ b/arch/mips/bcm47xx/bus.c
  28 @@ -0,0 +1,94 @@
  29 +/*
  30 + * BCM947xx nvram variable access
  31 + *
  32 + * Copyright (C) 2011 Hauke Mehrtens <hauke@hauke-m.de>
  33 + *
  34 + * This program is free software; you can redistribute  it and/or modify it
  35 + * under  the terms of  the GNU General  Public License as published by the
  36 + * Free Software Foundation;  either version 2 of the  License, or (at your
  37 + * option) any later version.
  38 + */
  39 +
  40 +#include <bus.h>
  41 +
  42 +static int bcm47xx_sflash_bcma_read(struct bcm47xx_sflash *dev, u32 offset, u32 len, u8 *buf)
  43 +{
  44 +       return bcma_sflash_read(dev->bcc, offset, len, buf);
  45 +}
  46 +
  47 +static int bcm47xx_sflash_bcma_poll(struct bcm47xx_sflash *dev, u32 offset)
  48 +{
  49 +       return bcma_sflash_poll(dev->bcc, offset);
  50 +}
  51 +
  52 +static int bcm47xx_sflash_bcma_write(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf)
  53 +{
  54 +       return bcma_sflash_write(dev->bcc, offset, len, buf);
  55 +}
  56 +
  57 +static int bcm47xx_sflash_bcma_erase(struct bcm47xx_sflash *dev, u32 offset)
  58 +{
  59 +       return bcma_sflash_erase(dev->bcc, offset);
  60 +}
  61 +
  62 +static int bcm47xx_sflash_bcma_commit(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf)
  63 +{
  64 +       return bcma_sflash_commit(dev->bcc, offset, len, buf);
  65 +}
  66 +
  67 +void bcm47xx_sflash_struct_bcma_init(struct bcm47xx_sflash *sflash, struct bcma_drv_cc *bcc)
  68 +{
  69 +       sflash->sflash_type = BCM47XX_BUS_TYPE_BCMA;
  70 +       sflash->bcc = bcc;
  71 +
  72 +       sflash->read = bcm47xx_sflash_bcma_read;
  73 +       sflash->poll = bcm47xx_sflash_bcma_poll;
  74 +       sflash->write = bcm47xx_sflash_bcma_write;
  75 +       sflash->erase = bcm47xx_sflash_bcma_erase;
  76 +       sflash->commit = bcm47xx_sflash_bcma_commit;
  77 +
  78 +       sflash->blocksize = bcc->sflash.blocksize;
  79 +       sflash->numblocks = bcc->sflash.numblocks;
  80 +       sflash->size = bcc->sflash.size;
  81 +}
  82 +
  83 +static int bcm47xx_sflash_ssb_read(struct bcm47xx_sflash *dev, u32 offset, u32 len, u8 *buf)
  84 +{
  85 +       return ssb_sflash_read(dev->scc, offset, len, buf);
  86 +}
  87 +
  88 +static int bcm47xx_sflash_ssb_poll(struct bcm47xx_sflash *dev, u32 offset)
  89 +{
  90 +       return ssb_sflash_poll(dev->scc, offset);
  91 +}
  92 +
  93 +static int bcm47xx_sflash_ssb_write(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf)
  94 +{
  95 +       return ssb_sflash_write(dev->scc, offset, len, buf);
  96 +}
  97 +
  98 +static int bcm47xx_sflash_ssb_erase(struct bcm47xx_sflash *dev, u32 offset)
  99 +{
 100 +       return ssb_sflash_erase(dev->scc, offset);
 101 +}
 102 +
 103 +static int bcm47xx_sflash_ssb_commit(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf)
 104 +{
 105 +       return ssb_sflash_commit(dev->scc, offset, len, buf);
 106 +}
 107 +
 108 +void bcm47xx_sflash_struct_ssb_init(struct bcm47xx_sflash *sflash, struct ssb_chipcommon *scc)
 109 +{
 110 +       sflash->sflash_type = BCM47XX_BUS_TYPE_SSB;
 111 +       sflash->scc = scc;
 112 +
 113 +       sflash->read = bcm47xx_sflash_ssb_read;
 114 +       sflash->poll = bcm47xx_sflash_ssb_poll;
 115 +       sflash->write = bcm47xx_sflash_ssb_write;
 116 +       sflash->erase = bcm47xx_sflash_ssb_erase;
 117 +       sflash->commit = bcm47xx_sflash_ssb_commit;
 118 +
 119 +       sflash->blocksize = scc->sflash.blocksize;
 120 +       sflash->numblocks = scc->sflash.numblocks;
 121 +       sflash->size = scc->sflash.size;
 122 +}
 123 --- a/arch/mips/bcm47xx/setup.c
 124 +++ b/arch/mips/bcm47xx/setup.c
 125 @@ -43,6 +43,8 @@ EXPORT_SYMBOL(bcm47xx_bus);
 126  enum bcm47xx_bus_type bcm47xx_bus_type;
 127  EXPORT_SYMBOL(bcm47xx_bus_type);
 128
 129 +struct bcm47xx_sflash bcm47xx_sflash;
 130 +
 131  static void bcm47xx_machine_restart(char *command)
 132  {
 133         printk(KERN_ALERT "Please stand by while rebooting the system...\n");
 134 @@ -291,6 +293,9 @@ static void __init bcm47xx_register_ssb(
 135         if (err)
 136                 panic("Failed to initialize SSB bus (err %d)\n", err);
 137
 138 +       if (bcm47xx_bus.ssb.chipco.flash_type == SSB_SFLASH)
 139 +               bcm47xx_sflash_struct_ssb_init(&bcm47xx_sflash, &bcm47xx_bus.ssb.chipco);
 140 +
 141         mcore = &bcm47xx_bus.ssb.mipscore;
 142         if (nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
 143                 if (strstr(buf, "console=ttyS1")) {
 144 @@ -315,6 +320,9 @@ static void __init bcm47xx_register_bcma
 145         err = bcma_host_soc_register(&bcm47xx_bus.bcma);
 146         if (err)
 147                 panic("Failed to initialize BCMA bus (err %d)\n", err);
 148 +
 149 +       if (bcm47xx_bus.bcma.bus.drv_cc.flash_type == BCMA_SFLASH)
 150 +               bcm47xx_sflash_struct_bcma_init(&bcm47xx_sflash, &bcm47xx_bus.bcma.bus.drv_cc);
 151  }
 152  #endif
 153
 154 --- /dev/null
 155 +++ b/arch/mips/include/asm/mach-bcm47xx/bus.h
 156 @@ -0,0 +1,37 @@
 157 +/*
 158 + * BCM947xx nvram variable access
 159 + *
 160 + * Copyright (C) 2011 Hauke Mehrtens <hauke@hauke-m.de>
 161 + *
 162 + * This program is free software; you can redistribute  it and/or modify it
 163 + * under  the terms of  the GNU General  Public License as published by the
 164 + * Free Software Foundation;  either version 2 of the  License, or (at your
 165 + * option) any later version.
 166 + */
 167 +
 168 +#include <linux/ssb/ssb.h>
 169 +#include <linux/bcma/bcma.h>
 170 +#include <bcm47xx.h>
 171 +
 172 +struct bcm47xx_sflash {
 173 +       enum bcm47xx_bus_type sflash_type;
 174 +       union {
 175 +               struct ssb_chipcommon *scc;
 176 +               struct bcma_drv_cc *bcc;
 177 +       };
 178 +
 179 +       int (*read)(struct bcm47xx_sflash *dev, u32 offset, u32 len, u8 *buf);
 180 +       int (*poll)(struct bcm47xx_sflash *dev, u32 offset);
 181 +       int (*write)(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf);
 182 +       int (*erase)(struct bcm47xx_sflash *dev, u32 offset);
 183 +       int (*commit)(struct bcm47xx_sflash *dev, u32 offset, u32 len, const u8 *buf);
 184 +
 185 +       u32 blocksize;          /* Block size */
 186 +       u32 numblocks;          /* Number of blocks */
 187 +       u32 size;               /* Total size in bytes */
 188 +};
 189 +
 190 +void bcm47xx_sflash_struct_bcma_init(struct bcm47xx_sflash *sflash, struct bcma_drv_cc *bcc);
 191 +void bcm47xx_sflash_struct_ssb_init(struct bcm47xx_sflash *sflash, struct ssb_chipcommon *scc);
 192 +
 193 +extern struct bcm47xx_sflash bcm47xx_sflash;