package/madwifi/patches-testing/318-ifxmips_eeprom.patch

   1 --- a/ath_hal/ah_os.c
   2 +++ b/ath_hal/ah_os.c
   3 @@ -917,9 +917,56 @@
   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 address, u_int32_t value)
  49  {
  50 +#ifdef EEPROM_EMULATION
  51 +       if((address >= 0x6000) && (address <= 0x6010) && ifxmips_emulate) {
  52 +               ath_hal_eeprom(ah, address, value, 1);
  53 +               return;
  54 +       }
  55 +#endif
  56 +
  57         _trace_regop(ah, REGOP_WRITE, address, value);
  58         _OS_REG_WRITE(ah, address, value);
  59  }
  60 @@ -929,7 +976,14 @@
  61  u_int32_t __ahdecl
  62  ath_hal_reg_read(struct ath_hal *ah, u_int address)
  63  {
  64 -       u_int32_t val = _OS_REG_READ(ah, address);
  65 +       u_int32_t val;
  66 +
  67 +#ifdef EEPROM_EMULATION
  68 +       if((address >= 0x6000) && (address <= 0x6010) && ifxmips_emulate)
  69 +               val = ath_hal_eeprom(ah, address, 0, 0);
  70 +       else
  71 +#endif
  72 +               val = _OS_REG_READ(ah, address);
  73         _trace_regop(ah, REGOP_READ, address, val);
  74         return val;
  75  }
  76 @@ -1123,6 +1177,9 @@
  77  #ifdef MMIOTRACE
  78         kmmio_logmsg = _kmmio_logmsg;
  79  #endif
  80 +#ifdef CONFIG_IFXMIPS
  81 +       ifxmips_emulate = ifxmips_has_brn_block();
  82 +#endif
  83
  84         sep = "";
  85         for (i = 0; ath_hal_buildopts[i] != NULL; i++) {