target/linux/brcm63xx/patches-3.7/435-BCM63XX-add-a-fixup-for-ath9k-devices.patch

   1 From bbebbf735a02b6d044ed928978ab4bd5f1833364 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 61/72] BCM63XX: add a fixup for ath9k devices
   5
   6 ---
   7  arch/mips/bcm63xx/Makefile                         |    3 +-
   8  arch/mips/bcm63xx/pci-ath9k-fixup.c                |  190 ++++++++++++++++++++
   9  .../include/asm/mach-bcm63xx/pci_ath9k_fixup.h     |    7 +
  10  3 files changed, 199 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 +1,8 @@
  17  obj-y          += clk.o cpu.o cs.o gpio.o irq.o nvram.o prom.o reset.o \
  18                    setup.o timer.o dev-dsp.o dev-enet.o dev-flash.o \
  19                    dev-hsspi.o dev-pcmcia.o dev-rng.o dev-spi.o dev-uart.o \
  20 -                  dev-wdt.o dev-usb-ehci.o dev-usb-ohci.o dev-usb-usbd.o
  21 +                  dev-wdt.o dev-usb-ehci.o dev-usb-ohci.o dev-usb-usbd.o \
  22 +                  pci-ath9k-fixup.o
  23  obj-$(CONFIG_EARLY_PRINTK)     += early_printk.o
  24
  25  obj-y          += boards/
  26 --- /dev/null
  27 +++ b/arch/mips/bcm63xx/pci-ath9k-fixup.c
  28 @@ -0,0 +1,190 @@
  29 +/*
  30 + *  Broadcom BCM63XX Ath9k EEPROM fixup helper.
  31 + *
  32 + *  Copytight (C) 2012 Jonas Gorski <jonas.gorski@gmail.com>
  33 + *
  34 + *  Based on
  35 + *
  36 + *  Atheros AP94 reference board PCI initialization
  37 + *
  38 + *  Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
  39 + *
  40 + *  This program is free software; you can redistribute it and/or modify it
  41 + *  under the terms of the GNU General Public License version 2 as published
  42 + *  by the Free Software Foundation.
  43 + */
  44 +
  45 +#include <linux/pci.h>
  46 +#include <linux/delay.h>
  47 +#include <linux/ath9k_platform.h>
  48 +
  49 +#include <bcm63xx_cpu.h>
  50 +#include <bcm63xx_io.h>
  51 +#include <bcm63xx_nvram.h>
  52 +#include <bcm63xx_dev_pci.h>
  53 +#include <bcm63xx_dev_flash.h>
  54 +#include <bcm63xx_dev_hsspi.h>
  55 +#include <pci_ath9k_fixup.h>
  56 +
  57 +struct ath9k_fixup {
  58 +       unsigned slot;
  59 +       u8 mac[ETH_ALEN];
  60 +       struct ath9k_platform_data pdata;
  61 +};
  62 +
  63 +static int ath9k_num_fixups;
  64 +static struct ath9k_fixup ath9k_fixups[2] = {
  65 +       {
  66 +               .slot = 255,
  67 +               .pdata = {
  68 +                       .led_pin        = -1,
  69 +               },
  70 +       },
  71 +       {
  72 +               .slot = 255,
  73 +               .pdata = {
  74 +                       .led_pin        = -1,
  75 +               },
  76 +       },
  77 +};
  78 +
  79 +static u16 *bcm63xx_read_eeprom(u16 *eeprom, u32 offset)
  80 +{
  81 +       u32 addr;
  82 +
  83 +       if (BCMCPU_IS_6328()) {
  84 +               addr = 0x18000000;
  85 +       } else {
  86 +               addr = bcm_mpi_readl(MPI_CSBASE_REG(0));
  87 +               addr &= MPI_CSBASE_BASE_MASK;
  88 +       }
  89 +
  90 +       switch (bcm63xx_attached_flash) {
  91 +       case BCM63XX_FLASH_TYPE_PARALLEL:
  92 +               memcpy(eeprom, (void *)KSEG1ADDR(addr + offset), ATH9K_PLAT_EEP_MAX_WORDS * sizeof(u16));
  93 +               return eeprom;
  94 +       case BCM63XX_FLASH_TYPE_SERIAL:
  95 +               /* the first megabyte is memory mapped */
  96 +               if (offset < 0x100000) {
  97 +                       memcpy(eeprom, (void *)KSEG1ADDR(addr + offset), ATH9K_PLAT_EEP_MAX_WORDS * sizeof(u16));
  98 +                       return eeprom;
  99 +               }
 100 +
 101 +               if (BCMCPU_IS_6328()) {
 102 +                       /* we can change the memory mapped megabyte */
 103 +                       bcm_hsspi_writel(offset & 0xf00000, 0x18);
 104 +                       memcpy(eeprom, (void *)KSEG1ADDR(addr + (offset & 0xfffff)), ATH9K_PLAT_EEP_MAX_WORDS * sizeof(u16));
 105 +                       bcm_hsspi_writel(0, 0x18);
 106 +                       return eeprom;
 107 +               }
 108 +               /* can't do anything here without talking to the SPI controller. */
 109 +       case BCM63XX_FLASH_TYPE_NAND:
 110 +       default:
 111 +               return NULL;
 112 +       }
 113 +}
 114 +
 115 +static void ath9k_pci_fixup(struct pci_dev *dev)
 116 +{
 117 +       void __iomem *mem;
 118 +       struct ath9k_platform_data *pdata = NULL;
 119 +       u16 *cal_data = NULL;
 120 +       u16 cmd;
 121 +       u32 bar0;
 122 +       u32 val;
 123 +       unsigned i;
 124 +
 125 +       for (i = 0; i < ath9k_num_fixups; i++) {
 126 +               if (ath9k_fixups[i].slot != PCI_SLOT(dev->devfn))
 127 +                       continue;
 128 +
 129 +               cal_data = ath9k_fixups[i].pdata.eeprom_data;
 130 +               pdata = &ath9k_fixups[i].pdata;
 131 +               break;
 132 +       }
 133 +
 134 +       if (cal_data == NULL)
 135 +               return;
 136 +
 137 +       if (*cal_data != 0xa55a) {
 138 +               pr_err("pci %s: invalid calibration data\n", pci_name(dev));
 139 +               return;
 140 +       }
 141 +
 142 +       pr_info("pci %s: fixup device configuration\n", pci_name(dev));
 143 +
 144 +       switch (bcm63xx_get_cpu_id()) {
 145 +       case BCM6328_CPU_ID:
 146 +               val = BCM_PCIE_MEM_BASE_PA;
 147 +               break;
 148 +       case BCM6348_CPU_ID:
 149 +       case BCM6358_CPU_ID:
 150 +       case BCM6368_CPU_ID:
 151 +               val = BCM_PCI_MEM_BASE_PA;
 152 +               break;
 153 +       default:
 154 +               BUG();
 155 +       }
 156 +
 157 +       mem = ioremap(val, 0x10000);
 158 +       if (!mem) {
 159 +               pr_err("pci %s: ioremap error\n", pci_name(dev));
 160 +               return;
 161 +       }
 162 +
 163 +       pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar0);
 164 +       pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar0);
 165 +       pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, val);
 166 +
 167 +       pci_read_config_word(dev, PCI_COMMAND, &cmd);
 168 +       cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
 169 +       pci_write_config_word(dev, PCI_COMMAND, cmd);
 170 +
 171 +       /* set offset to first reg address */
 172 +       cal_data += 3;
 173 +       while(*cal_data != 0xffff) {
 174 +               u32 reg;
 175 +               reg = *cal_data++;
 176 +               val = *cal_data++;
 177 +               val |= (*cal_data++) << 16;
 178 +
 179 +               writel(val, mem + reg);
 180 +               udelay(100);
 181 +       }
 182 +
 183 +       pci_read_config_dword(dev, PCI_VENDOR_ID, &val);
 184 +       dev->vendor = val & 0xffff;
 185 +       dev->device = (val >> 16) & 0xffff;
 186 +
 187 +       pci_read_config_dword(dev, PCI_CLASS_REVISION, &val);
 188 +       dev->revision = val & 0xff;
 189 +       dev->class = val >> 8; /* upper 3 bytes */
 190 +
 191 +       pci_read_config_word(dev, PCI_COMMAND, &cmd);
 192 +       cmd &= ~(PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
 193 +       pci_write_config_word(dev, PCI_COMMAND, cmd);
 194 +
 195 +       pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, bar0);
 196 +
 197 +       iounmap(mem);
 198 +
 199 +       dev->dev.platform_data = pdata;
 200 +}
 201 +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATHEROS, PCI_ANY_ID, ath9k_pci_fixup);
 202 +
 203 +void __init pci_enable_ath9k_fixup(unsigned slot, u32 offset)
 204 +{
 205 +       if (ath9k_num_fixups >= ARRAY_SIZE(ath9k_fixups))
 206 +               return;
 207 +
 208 +       ath9k_fixups[ath9k_num_fixups].slot = slot;
 209 +
 210 +       if (!bcm63xx_read_eeprom(ath9k_fixups[ath9k_num_fixups].pdata.eeprom_data, offset))
 211 +               return;
 212 +
 213 +       if (bcm63xx_nvram_get_mac_address(ath9k_fixups[ath9k_num_fixups].mac))
 214 +               return;
 215 +
 216 +       ath9k_fixups[ath9k_num_fixups].pdata.macaddr = ath9k_fixups[ath9k_num_fixups].mac;
 217 +       ath9k_num_fixups++;
 218 +}
 219 --- /dev/null
 220 +++ b/arch/mips/include/asm/mach-bcm63xx/pci_ath9k_fixup.h
 221 @@ -0,0 +1,7 @@
 222 +#ifndef _PCI_ATH9K_FIXUP
 223 +#define _PCI_ATH9K_FIXUP
 224 +
 225 +
 226 +void pci_enable_ath9k_fixup(unsigned slot, u32 offset) __init;
 227 +
 228 +#endif /* _PCI_ATH9K_FIXUP */