target/linux/brcm63xx/patches-3.6/435-BCM63XX-add-a-fixup-for-ath9k-devices.patch

   1 From fb6f6f58db9ae9cf27ab01f5f09cfbc5c078a7b8 Mon Sep 17 00:00:00 2001
   2 From: Jonas Gorski <jonas.gorski@gmail.com>
   3 Date: Thu, 3 May 2012 14:36:11 +0200
   4 Subject: [PATCH 66/80] BCM63XX: add a fixup for ath9k devices
   5
   6 ---
   7  arch/mips/bcm63xx/Makefile                         |    2 +-
   8  arch/mips/bcm63xx/pci-ath9k-fixup.c                |  190 ++++++++++++++++++++
   9  .../include/asm/mach-bcm63xx/pci_ath9k_fixup.h     |    7 +
  10  3 files changed, 198 insertions(+), 1 deletion(-)
  11  create mode 100644 arch/mips/bcm63xx/pci-ath9k-fixup.c
  12  create mode 100644 arch/mips/include/asm/mach-bcm63xx/pci_ath9k_fixup.h
  13
  14 --- a/arch/mips/bcm63xx/Makefile
  15 +++ b/arch/mips/bcm63xx/Makefile
  16 @@ -1,7 +1,7 @@
  17  obj-y          += clk.o cpu.o cs.o gpio.o irq.o nvram.o prom.o setup.o \
  18                    timer.o dev-dsp.o dev-enet.o dev-flash.o dev-hsspi.o \
  19                    dev-pcmcia.o dev-rng.o dev-spi.o dev-uart.o dev-usb-ehci.o \
  20 -                  dev-usb-ohci.o dev-wdt.o
  21 +                  dev-usb-ohci.o dev-wdt.o pci-ath9k-fixup.o
  22  obj-$(CONFIG_EARLY_PRINTK)     += early_printk.o
  23
  24  obj-y          += boards/
  25 --- /dev/null
  26 +++ b/arch/mips/bcm63xx/pci-ath9k-fixup.c
  27 @@ -0,0 +1,190 @@
  28 +/*
  29 + *  Broadcom BCM63XX Ath9k EEPROM fixup helper.
  30 + *
  31 + *  Copytight (C) 2012 Jonas Gorski <jonas.gorski@gmail.com>
  32 + *
  33 + *  Based on
  34 + *
  35 + *  Atheros AP94 reference board PCI initialization
  36 + *
  37 + *  Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
  38 + *
  39 + *  This program is free software; you can redistribute it and/or modify it
  40 + *  under the terms of the GNU General Public License version 2 as published
  41 + *  by the Free Software Foundation.
  42 + */
  43 +
  44 +#include <linux/pci.h>
  45 +#include <linux/delay.h>
  46 +#include <linux/ath9k_platform.h>
  47 +
  48 +#include <bcm63xx_cpu.h>
  49 +#include <bcm63xx_io.h>
  50 +#include <bcm63xx_nvram.h>
  51 +#include <bcm63xx_dev_pci.h>
  52 +#include <bcm63xx_dev_flash.h>
  53 +#include <bcm63xx_dev_hsspi.h>
  54 +#include <pci_ath9k_fixup.h>
  55 +
  56 +struct ath9k_fixup {
  57 +       unsigned slot;
  58 +       u8 mac[ETH_ALEN];
  59 +       struct ath9k_platform_data pdata;
  60 +};
  61 +
  62 +static int ath9k_num_fixups;
  63 +static struct ath9k_fixup ath9k_fixups[2] = {
  64 +       {
  65 +               .slot = 255,
  66 +               .pdata = {
  67 +                       .led_pin        = -1,
  68 +               },
  69 +       },
  70 +       {
  71 +               .slot = 255,
  72 +               .pdata = {
  73 +                       .led_pin        = -1,
  74 +               },
  75 +       },
  76 +};
  77 +
  78 +static u16 *bcm63xx_read_eeprom(u16 *eeprom, u32 offset)
  79 +{
  80 +       u32 addr;
  81 +
  82 +       if (BCMCPU_IS_6328()) {
  83 +               addr = 0x18000000;
  84 +       } else {
  85 +               addr = bcm_mpi_readl(MPI_CSBASE_REG(0));
  86 +               addr &= MPI_CSBASE_BASE_MASK;
  87 +       }
  88 +
  89 +       switch (bcm63xx_attached_flash) {
  90 +       case BCM63XX_FLASH_TYPE_PARALLEL:
  91 +               memcpy(eeprom, (void *)KSEG1ADDR(addr + offset), ATH9K_PLAT_EEP_MAX_WORDS * sizeof(u16));
  92 +               return eeprom;
  93 +       case BCM63XX_FLASH_TYPE_SERIAL:
  94 +               /* the first megabyte is memory mapped */
  95 +               if (offset < 0x100000) {
  96 +                       memcpy(eeprom, (void *)KSEG1ADDR(addr + offset), ATH9K_PLAT_EEP_MAX_WORDS * sizeof(u16));
  97 +                       return eeprom;
  98 +               }
  99 +
 100 +               if (BCMCPU_IS_6328()) {
 101 +                       /* we can change the memory mapped megabyte */
 102 +                       bcm_hsspi_writel(offset & 0xf00000, 0x18);
 103 +                       memcpy(eeprom, (void *)KSEG1ADDR(addr + (offset & 0xfffff)), ATH9K_PLAT_EEP_MAX_WORDS * sizeof(u16));
 104 +                       bcm_hsspi_writel(0, 0x18);
 105 +                       return eeprom;
 106 +               }
 107 +               /* can't do anything here without talking to the SPI controller. */
 108 +       case BCM63XX_FLASH_TYPE_NAND:
 109 +       default:
 110 +               return NULL;
 111 +       }
 112 +}
 113 +
 114 +static void ath9k_pci_fixup(struct pci_dev *dev)
 115 +{
 116 +       void __iomem *mem;
 117 +       struct ath9k_platform_data *pdata = NULL;
 118 +       u16 *cal_data = NULL;
 119 +       u16 cmd;
 120 +       u32 bar0;
 121 +       u32 val;
 122 +       unsigned i;
 123 +
 124 +       for (i = 0; i < ath9k_num_fixups; i++) {
 125 +               if (ath9k_fixups[i].slot != PCI_SLOT(dev->devfn))
 126 +                       continue;
 127 +
 128 +               cal_data = ath9k_fixups[i].pdata.eeprom_data;
 129 +               pdata = &ath9k_fixups[i].pdata;
 130 +               break;
 131 +       }
 132 +
 133 +       if (cal_data == NULL)
 134 +               return;
 135 +
 136 +       if (*cal_data != 0xa55a) {
 137 +               pr_err("pci %s: invalid calibration data\n", pci_name(dev));
 138 +               return;
 139 +       }
 140 +
 141 +       pr_info("pci %s: fixup device configuration\n", pci_name(dev));
 142 +
 143 +       switch (bcm63xx_get_cpu_id()) {
 144 +       case BCM6328_CPU_ID:
 145 +               val = BCM_PCIE_MEM_BASE_PA;
 146 +               break;
 147 +       case BCM6348_CPU_ID:
 148 +       case BCM6358_CPU_ID:
 149 +       case BCM6368_CPU_ID:
 150 +               val = BCM_PCI_MEM_BASE_PA;
 151 +               break;
 152 +       default:
 153 +               BUG();
 154 +       }
 155 +
 156 +       mem = ioremap(val, 0x10000);
 157 +       if (!mem) {
 158 +               pr_err("pci %s: ioremap error\n", pci_name(dev));
 159 +               return;
 160 +       }
 161 +
 162 +       pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar0);
 163 +       pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar0);
 164 +       pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, val);
 165 +
 166 +       pci_read_config_word(dev, PCI_COMMAND, &cmd);
 167 +       cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
 168 +       pci_write_config_word(dev, PCI_COMMAND, cmd);
 169 +
 170 +       /* set offset to first reg address */
 171 +       cal_data += 3;
 172 +       while(*cal_data != 0xffff) {
 173 +               u32 reg;
 174 +               reg = *cal_data++;
 175 +               val = *cal_data++;
 176 +               val |= (*cal_data++) << 16;
 177 +
 178 +               writel(val, mem + reg);
 179 +               udelay(100);
 180 +       }
 181 +
 182 +       pci_read_config_dword(dev, PCI_VENDOR_ID, &val);
 183 +       dev->vendor = val & 0xffff;
 184 +       dev->device = (val >> 16) & 0xffff;
 185 +
 186 +       pci_read_config_dword(dev, PCI_CLASS_REVISION, &val);
 187 +       dev->revision = val & 0xff;
 188 +       dev->class = val >> 8; /* upper 3 bytes */
 189 +
 190 +       pci_read_config_word(dev, PCI_COMMAND, &cmd);
 191 +       cmd &= ~(PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
 192 +       pci_write_config_word(dev, PCI_COMMAND, cmd);
 193 +
 194 +       pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, bar0);
 195 +
 196 +       iounmap(mem);
 197 +
 198 +       dev->dev.platform_data = pdata;
 199 +}
 200 +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATHEROS, PCI_ANY_ID, ath9k_pci_fixup);
 201 +
 202 +void __init pci_enable_ath9k_fixup(unsigned slot, u32 offset)
 203 +{
 204 +       if (ath9k_num_fixups >= ARRAY_SIZE(ath9k_fixups))
 205 +               return;
 206 +
 207 +       ath9k_fixups[ath9k_num_fixups].slot = slot;
 208 +
 209 +       if (!bcm63xx_read_eeprom(ath9k_fixups[ath9k_num_fixups].pdata.eeprom_data, offset))
 210 +               return;
 211 +
 212 +       if (bcm63xx_nvram_get_mac_address(ath9k_fixups[ath9k_num_fixups].mac))
 213 +               return;
 214 +
 215 +       ath9k_fixups[ath9k_num_fixups].pdata.macaddr = ath9k_fixups[ath9k_num_fixups].mac;
 216 +       ath9k_num_fixups++;
 217 +}
 218 --- /dev/null
 219 +++ b/arch/mips/include/asm/mach-bcm63xx/pci_ath9k_fixup.h
 220 @@ -0,0 +1,7 @@
 221 +#ifndef _PCI_ATH9K_FIXUP
 222 +#define _PCI_ATH9K_FIXUP
 223 +
 224 +
 225 +void pci_enable_ath9k_fixup(unsigned slot, u32 offset) __init;
 226 +
 227 +#endif /* _PCI_ATH9K_FIXUP */