package/madwifi/patches/352-ani_fix.patch

   1 --- a/ath/if_ath.c
   2 +++ b/ath/if_ath.c
   3 @@ -1014,9 +1014,7 @@ ath_attach(u_int16_t devid, struct net_d
   4          */
   5         sc->sc_hasveol = ath_hal_hasveol(ah);
   6
   7 -       /* Interference mitigation/ambient noise immunity (ANI).
   8 -        * In modes other than HAL_M_STA, it causes receive sensitivity
   9 -        * problems for OFDM. */
  10 +       /* Interference mitigation/ambient noise immunity (ANI). */
  11         sc->sc_hasintmit = ath_hal_hasintmit(ah);
  12
  13         /* get mac address from hardware */
  14 @@ -1144,6 +1142,11 @@ ath_attach(u_int16_t devid, struct net_d
  15         sc->sc_rp_lasttsf       = 0;
  16         sc->sc_last_tsf         = 0;
  17
  18 +       /* set all 3 to auto */
  19 +       sc->sc_intmit = -1;
  20 +       sc->sc_noise_immunity = -1;
  21 +       sc->sc_ofdm_weak_det = -1;
  22 +
  23         return 0;
  24  bad3:
  25         ieee80211_ifdetach(ic);
  26 @@ -2428,6 +2431,43 @@ ath_chan2flags(struct ieee80211_channel
  27         return flags;
  28  }
  29
  30 +static int ath_setintmit(struct ath_softc *sc)
  31 +{
  32 +       struct ath_hal *ah = sc->sc_ah;
  33 +       int ret;
  34 +       int val;
  35 +
  36 +       if (!sc->sc_hasintmit)
  37 +               return 0;
  38 +
  39 +       switch(sc->sc_intmit) {
  40 +               case -1:
  41 +                       if (sc->sc_opmode != IEEE80211_M_MONITOR)
  42 +                               val = 1;
  43 +                       else
  44 +                               val = 0;
  45 +                       break;
  46 +               case 0: /* disabled */
  47 +               case 1: /* enabled */
  48 +                       val = sc->sc_intmit;
  49 +                       break;
  50 +               default:
  51 +                       return 0;
  52 +       }
  53 +       ret = ath_hal_setintmit(ah, val);
  54 +       if (val)
  55 +               goto done;
  56 +
  57 +       /* manual settings */
  58 +       if ((sc->sc_noise_immunity >= 0) && (sc->sc_noise_immunity <= 5))
  59 +               ath_hal_setcapability(ah, HAL_CAP_INTMIT, 2, sc->sc_noise_immunity, NULL);
  60 +       if ((sc->sc_ofdm_weak_det == 0) || (sc->sc_ofdm_weak_det == 1))
  61 +               ath_hal_setcapability(ah, HAL_CAP_INTMIT, 3, sc->sc_ofdm_weak_det, NULL);
  62 +
  63 +done:
  64 +       return ret;
  65 +}
  66 +
  67  /*
  68   * Context: process context
  69   */
  70 @@ -2493,8 +2533,7 @@ ath_init(struct net_device *dev)
  71         if (sc->sc_softled)
  72                 ath_hal_gpioCfgOutput(ah, sc->sc_ledpin);
  73
  74 -       if ((sc->sc_opmode != HAL_M_STA) && sc->sc_hasintmit)
  75 -               ath_hal_setintmit(ah, 0);
  76 +       ath_setintmit(sc);
  77
  78         /*
  79          * This is needed only to setup initial state
  80 @@ -2530,7 +2569,7 @@ ath_init(struct net_device *dev)
  81          * Enable MIB interrupts when there are hardware phy counters.
  82          * Note we only do this (at the moment) for station mode.
  83          */
  84 -       if (sc->sc_needmib && ic->ic_opmode == IEEE80211_M_STA)
  85 +       if (sc->sc_needmib && ath_hal_getintmit(ah, NULL))
  86                 sc->sc_imask |= HAL_INT_MIB;
  87         ath_hal_intrset(ah, sc->sc_imask);
  88
  89 @@ -2787,9 +2826,7 @@ ath_reset(struct net_device *dev)
  90                 EPRINTF(sc, "Unable to reset hardware: '%s' (HAL status %u)\n",
  91                         ath_get_hal_status_desc(status), status);
  92
  93 -       if ((sc->sc_opmode != HAL_M_STA) && sc->sc_hasintmit)
  94 -               ath_hal_setintmit(ah, 0);
  95 -
  96 +       ath_setintmit(sc);
  97         ath_update_txpow(sc);           /* update tx power state */
  98         ath_radar_update(sc);
  99         ath_setdefantenna(sc, sc->sc_defant);
 100 @@ -4174,6 +4211,8 @@ ath_calcrxfilter(struct ath_softc *sc)
 101         if (sc->sc_nmonvaps > 0)
 102                 rfilt |= (HAL_RX_FILTER_CONTROL | HAL_RX_FILTER_BEACON |
 103                           HAL_RX_FILTER_PROBEREQ | HAL_RX_FILTER_PROM);
 104 +       if (sc->sc_hasintmit && !sc->sc_needmib && ath_hal_getintmit(ah, NULL))
 105 +               rfilt |= HAL_RX_FILTER_PHYERR;
 106         if (sc->sc_curchan.privFlags & CHANNEL_DFS)
 107                 rfilt |= (HAL_RX_FILTER_PHYERR | HAL_RX_FILTER_PHYRADAR);
 108         return rfilt;
 109 @@ -6524,9 +6563,6 @@ process_rx_again:
 110                         rs->rs_rssi = 0;
 111
 112                 len = rs->rs_datalen;
 113 -               /* DMA sync. dies spectacularly if len == 0 */
 114 -               if (len == 0)
 115 -                       goto rx_next;
 116
 117                 if (rs->rs_more) {
 118                         /*
 119 @@ -8874,9 +8910,7 @@ ath_chan_set(struct ath_softc *sc, struc
 120                 if (sc->sc_softled)
 121                         ath_hal_gpioCfgOutput(ah, sc->sc_ledpin);
 122
 123 -               if ((sc->sc_opmode != HAL_M_STA) && sc->sc_hasintmit)
 124 -                       ath_hal_setintmit(ah, 0);
 125 -
 126 +               ath_setintmit(sc);
 127                 sc->sc_curchan = hchan;
 128                 ath_update_txpow(sc);           /* update tx power state */
 129                 ath_radar_update(sc);
 130 @@ -10653,9 +10687,54 @@ enum {
 131         ATH_RP_IGNORED          = 24,
 132         ATH_RADAR_IGNORED       = 25,
 133         ATH_MAXVAPS             = 26,
 134 +       ATH_INTMIT                      = 27,
 135 +       ATH_NOISE_IMMUNITY      = 28,
 136 +       ATH_OFDM_WEAK_DET       = 29
 137  };
 138
 139  static int
 140 +ath_sysctl_set_intmit(struct ath_softc *sc, long ctl, u_int val)
 141 +{
 142 +       int ret;
 143 +
 144 +       switch(ctl) {
 145 +       case ATH_INTMIT:
 146 +               sc->sc_intmit = val;
 147 +               break;
 148 +       case ATH_NOISE_IMMUNITY:
 149 +               sc->sc_noise_immunity = val;
 150 +               break;
 151 +       case ATH_OFDM_WEAK_DET:
 152 +               sc->sc_ofdm_weak_det = val;
 153 +               break;
 154 +       default:
 155 +               return -EINVAL;
 156 +       }
 157 +       ret = ath_setintmit(sc);
 158 +       ath_calcrxfilter(sc);
 159 +       return ret;
 160 +}
 161 +
 162 +static int
 163 +ath_sysctl_get_intmit(struct ath_softc *sc, long ctl, u_int *val)
 164 +{
 165 +       struct ath_hal *ah = sc->sc_ah;
 166 +
 167 +       switch(ctl) {
 168 +       case ATH_INTMIT:
 169 +               *val = (ath_hal_getcapability(ah, HAL_CAP_INTMIT, 1, NULL) == HAL_OK);
 170 +               break;
 171 +       case ATH_NOISE_IMMUNITY:
 172 +               return ath_hal_getcapability(ah, HAL_CAP_INTMIT, 2, val);
 173 +       case ATH_OFDM_WEAK_DET:
 174 +               return ath_hal_getcapability(ah, HAL_CAP_INTMIT, 3, val);
 175 +       default:
 176 +               return -EINVAL;
 177 +       }
 178 +       return 0;
 179 +}
 180 +
 181 +static int
 182  ATH_SYSCTL_DECL(ath_sysctl_halparam, ctl, write, filp, buffer, lenp, ppos)
 183  {
 184         struct ath_softc *sc = ctl->extra1;
 185 @@ -10841,6 +10920,11 @@ ATH_SYSCTL_DECL(ath_sysctl_halparam, ctl
 186                         case ATH_RADAR_IGNORED:
 187                                 sc->sc_radar_ignored = val;
 188                                 break;
 189 +                       case ATH_INTMIT:
 190 +                       case ATH_NOISE_IMMUNITY:
 191 +                       case ATH_OFDM_WEAK_DET:
 192 +                               ret = ath_sysctl_set_intmit(sc, (long)ctl->extra2, val);
 193 +                               break;
 194                         default:
 195                                 ret = -EINVAL;
 196                                 break;
 197 @@ -10907,6 +10991,11 @@ ATH_SYSCTL_DECL(ath_sysctl_halparam, ctl
 198                 case ATH_RADAR_IGNORED:
 199                         val = sc->sc_radar_ignored;
 200                         break;
 201 +               case ATH_INTMIT:
 202 +               case ATH_NOISE_IMMUNITY:
 203 +               case ATH_OFDM_WEAK_DET:
 204 +                       ret = ath_sysctl_get_intmit(sc, (long)ctl->extra2, &val);
 205 +                       break;
 206                 default:
 207                         ret = -EINVAL;
 208                         break;
 209 @@ -11084,6 +11173,24 @@ static const ctl_table ath_sysctl_templa
 210           .proc_handler = ath_sysctl_halparam,
 211           .extra2       = (void *)ATH_RADAR_IGNORED,
 212         },
 213 +       { .ctl_name     = CTL_AUTO,
 214 +         .procname     = "intmit",
 215 +         .mode         = 0644,
 216 +         .proc_handler = ath_sysctl_halparam,
 217 +         .extra2       = (void *)ATH_INTMIT,
 218 +       },
 219 +       { .ctl_name     = CTL_AUTO,
 220 +         .procname     = "noise_immunity",
 221 +         .mode         = 0644,
 222 +         .proc_handler = ath_sysctl_halparam,
 223 +         .extra2       = (void *)ATH_NOISE_IMMUNITY,
 224 +       },
 225 +       { .ctl_name     = CTL_AUTO,
 226 +         .procname     = "ofdm_weak_det",
 227 +         .mode         = 0644,
 228 +         .proc_handler = ath_sysctl_halparam,
 229 +         .extra2       = (void *)ATH_OFDM_WEAK_DET,
 230 +       },
 231         { 0 }
 232  };
 233
 234 --- a/ath/if_athvar.h
 235 +++ b/ath/if_athvar.h
 236 @@ -693,6 +693,10 @@ struct ath_softc {
 237         unsigned int sc_txcont_power; /* Continuous transmit power in 0.5dBm units */
 238         unsigned int sc_txcont_rate;  /* Continuous transmit rate in Mbps */
 239
 240 +       int8_t sc_intmit; /* Interference mitigation enabled, -1 = auto, based on mode, 0/1 = off/on */
 241 +       int8_t sc_noise_immunity; /* Noise immunity level, 0-4, -1 == auto) */
 242 +       int8_t sc_ofdm_weak_det; /* OFDM weak frames detection, -1 == auto */
 243 +
 244         /* rate tables */
 245         const HAL_RATE_TABLE *sc_rates[IEEE80211_MODE_MAX];
 246         const HAL_RATE_TABLE *sc_currates;      /* current rate table */
 247 --- a/ath/if_ath_hal.h
 248 +++ b/ath/if_ath_hal.h
 249 @@ -67,14 +67,14 @@ static inline HAL_POWER_MODE ath_hal_get
 250
 251  static inline HAL_BOOL ath_hal_getdiagstate(struct ath_hal *ah, int request,
 252                                             const void *args, u_int32_t argsize,
 253 -                                           void **result,
 254 +                                           void *result,
 255                                             u_int32_t *resultsize)
 256  {
 257         HAL_BOOL ret;
 258         ATH_HAL_LOCK_IRQ(ah->ah_sc);
 259         ath_hal_set_function(__func__);
 260         ret =
 261 -           ah->ah_getDiagState(ah, request, args, argsize, *result,
 262 +           ah->ah_getDiagState(ah, request, args, argsize, result,
 263                                 resultsize);
 264         ath_hal_set_function(NULL);
 265         ATH_HAL_UNLOCK_IRQ(ah->ah_sc);