package/madwifi/patches/354-ifxmips_eeprom.patch

   1 --- a/ath_hal/ah_os.c
   2 +++ b/ath_hal/ah_os.c
   3 @@ -343,6 +343,46 @@
   4   * NB: see the comments in ah_osdep.h about byte-swapping register
   5   *     reads and writes to understand what's going on below.
   6   */
   7 +
   8 +#ifdef CONFIG_IFXMIPS
   9 +extern int ifxmips_has_brn_block(void);
  10 +static int ifxmips_emulate = 0;
  11 +#define EEPROM_EMULATION 1
  12 +#endif
  13 +
  14 +#ifdef EEPROM_EMULATION
  15 +static int ath_hal_eeprom(struct ath_hal *ah, unsigned long addr, int val, int write)
  16 +{
  17 +       static int addrsel = 0;
  18 +       static int rc = 0;
  19 +
  20 +       if (write) {
  21 +               if(addr == 0x6000) {
  22 +                       addrsel = val * 2;
  23 +                       rc = 0;
  24 +               }
  25 +       } else {
  26 +               switch(addr)
  27 +               {
  28 +               case 0x600c:
  29 +                       if(rc++ < 2)
  30 +                               val = 0x00000000;
  31 +                       else
  32 +                               val = 0x00000002;
  33 +                       break;
  34 +               case 0x6004:
  35 +                       val = cpu_to_le16(__raw_readw((u16 *) KSEG1ADDR(0xb07f0400 + addrsel)));
  36 +                       /* this forces the regdomain to 0x00 (worldwide), as the original setting
  37 +                        * causes issues with the HAL */
  38 +                       if (addrsel == 0x17e)
  39 +                               val = 0;
  40 +                       break;
  41 +               }
  42 +       }
  43 +       return val;
  44 +}
  45 +#endif
  46 +
  47  void __ahdecl
  48  ath_hal_reg_write(struct ath_hal *ah, u_int reg, u_int32_t val)
  49  {
  50 @@ -351,20 +391,33 @@
  51                 ath_hal_printf(ah, "%s: WRITE 0x%x <= 0x%x\n",
  52                                 (ath_hal_func ?: "unknown"), reg, val);
  53  #endif
  54 -       _OS_REG_WRITE(ah, reg, val);
  55 +#ifdef EEPROM_EMULATION
  56 +       if((reg >= 0x6000) && (reg <= 0x6010) && ifxmips_emulate)
  57 +       {
  58 +               val = ath_hal_eeprom(ah, reg, val, 1);
  59 +       } else
  60 +#endif
  61 +               _OS_REG_WRITE(ah, reg, val);
  62  }
  63  EXPORT_SYMBOL(ath_hal_reg_write);
  64
  65 +
  66  /* This should only be called while holding the lock, sc->sc_hal_lock. */
  67  u_int32_t __ahdecl
  68  ath_hal_reg_read(struct ath_hal *ah, u_int reg)
  69  {
  70 -       u_int32_t val;
  71 +       u_int32_t val;
  72 +#ifdef EEPROM_EMULATION
  73 +       if((reg >= 0x6000) && (reg <= 0x6010) && ifxmips_emulate)
  74 +       {
  75 +               val = ath_hal_eeprom(ah, reg, 0, 0);
  76 +       } else
  77 +#endif
  78 +               val = _OS_REG_READ(ah, reg);
  79
  80 -       val = _OS_REG_READ(ah, reg);
  81  #ifdef AH_DEBUG
  82         if (ath_hal_debug > 1)
  83 -               ath_hal_printf(ah, "%s: READ 0x%x => 0x%x\n",
  84 +               ath_hal_printf(ah, "%s: READ 0x%x => 0x%x\n",
  85                                 (ath_hal_func ?: "unknown"), reg, val);
  86  #endif
  87         return val;
  88 @@ -581,7 +634,9 @@
  89  {
  90         const char *sep;
  91         int i;
  92 -
  93 +#ifdef CONFIG_IFXMIPS
  94 +       ifxmips_emulate = ifxmips_has_brn_block();
  95 +#endif
  96         printk(KERN_INFO "%s: %s (", dev_info, ath_hal_version);
  97         sep = "";
  98         for (i = 0; ath_hal_buildopts[i] != NULL; i++) {