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openwrt/package/madwifi/patches/352-ani_fix.patch

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Index: madwifi-trunk-r3314/ath/if_ath.c
===================================================================
--- madwifi-trunk-r3314.orig/ath/if_ath.c 2008-06-13 10:39:28.000000000 +0200
+++ madwifi-trunk-r3314/ath/if_ath.c 2008-06-13 10:39:54.000000000 +0200
@@ -1014,9 +1014,7 @@
*/
sc->sc_hasveol = ath_hal_hasveol(ah);
- /* Interference mitigation/ambient noise immunity (ANI).
- * In modes other than HAL_M_STA, it causes receive sensitivity
- * problems for OFDM. */
+ /* Interference mitigation/ambient noise immunity (ANI). */
sc->sc_hasintmit = ath_hal_hasintmit(ah);
/* get mac address from hardware */
@@ -1144,6 +1142,11 @@
sc->sc_rp_lasttsf = 0;
sc->sc_last_tsf = 0;
+ /* set all 3 to auto */
+ sc->sc_intmit = -1;
+ sc->sc_noise_immunity = -1;
+ sc->sc_ofdm_weak_det = -1;
+
return 0;
bad3:
ieee80211_ifdetach(ic);
@@ -2347,16 +2350,6 @@
}
if (status & HAL_INT_MIB) {
sc->sc_stats.ast_mib++;
- /* When the card receives lots of PHY errors, the MIB
- * interrupt will fire at a very rapid rate. We will use
- * a timer to enforce at least 1 jiffy delay between
- * MIB interrupts. This should be unproblematic, since
- * the hardware will continue to update the counters in
- * the mean time. */
- sc->sc_imask &= ~HAL_INT_MIB;
- ath_hal_intrset(ah, sc->sc_imask);
- mod_timer(&sc->sc_mib_enable, jiffies + 1);
-
/* Let the HAL handle the event. */
ath_hal_mibevent(ah, &sc->sc_halstats);
}
@@ -2426,6 +2419,43 @@
return flags;
}
+static int ath_setintmit(struct ath_softc *sc)
+{
+ struct ath_hal *ah = sc->sc_ah;
+ int ret;
+ int val;
+
+ if (!sc->sc_hasintmit)
+ return 0;
+
+ switch(sc->sc_intmit) {
+ case -1:
+ if (sc->sc_opmode != IEEE80211_M_MONITOR)
+ val = 1;
+ else
+ val = 0;
+ break;
+ case 0: /* disabled */
+ case 1: /* enabled */
+ val = sc->sc_intmit;
+ break;
+ default:
+ return 0;
+ }
+ ret = ath_hal_setintmit(ah, val);
+ if (val)
+ goto done;
+
+ /* manual settings */
+ if ((sc->sc_noise_immunity >= 0) && (sc->sc_noise_immunity <= 5))
+ ath_hal_setcapability(ah, HAL_CAP_INTMIT, 2, sc->sc_noise_immunity, NULL);
+ if ((sc->sc_ofdm_weak_det == 0) || (sc->sc_ofdm_weak_det == 1))
+ ath_hal_setcapability(ah, HAL_CAP_INTMIT, 3, sc->sc_ofdm_weak_det, NULL);
+
+done:
+ return ret;
+}
+
/*
* Context: process context
*/
@@ -2491,8 +2521,7 @@
if (sc->sc_softled)
ath_hal_gpioCfgOutput(ah, sc->sc_ledpin);
- if ((sc->sc_opmode != HAL_M_STA) && sc->sc_hasintmit)
- ath_hal_setintmit(ah, 0);
+ ath_setintmit(sc);
/*
* This is needed only to setup initial state
@@ -2528,7 +2557,7 @@
* Enable MIB interrupts when there are hardware phy counters.
* Note we only do this (at the moment) for station mode.
*/
- if (sc->sc_needmib && ic->ic_opmode == IEEE80211_M_STA)
+ if (sc->sc_needmib && ath_hal_getintmit(ah, NULL))
sc->sc_imask |= HAL_INT_MIB;
ath_hal_intrset(ah, sc->sc_imask);
@@ -2785,9 +2814,7 @@
EPRINTF(sc, "Unable to reset hardware: '%s' (HAL status %u)\n",
ath_get_hal_status_desc(status), status);
- if ((sc->sc_opmode != HAL_M_STA) && sc->sc_hasintmit)
- ath_hal_setintmit(ah, 0);
-
+ ath_setintmit(sc);
ath_update_txpow(sc); /* update tx power state */
ath_radar_update(sc);
ath_setdefantenna(sc, sc->sc_defant);
@@ -4165,6 +4192,8 @@
if (sc->sc_nmonvaps > 0)
rfilt |= (HAL_RX_FILTER_CONTROL | HAL_RX_FILTER_BEACON |
HAL_RX_FILTER_PROBEREQ | HAL_RX_FILTER_PROM);
+ if (sc->sc_hasintmit && !sc->sc_needmib && ath_hal_getintmit(ah, NULL))
+ rfilt |= HAL_RX_FILTER_PHYERR;
if (sc->sc_curchan.privFlags & CHANNEL_DFS)
rfilt |= (HAL_RX_FILTER_PHYERR | HAL_RX_FILTER_PHYRADAR);
return rfilt;
@@ -6513,9 +6542,6 @@
rs->rs_rssi = 0;
len = rs->rs_datalen;
- /* DMA sync. dies spectacularly if len == 0 */
- if (len == 0)
- goto rx_next;
if (rs->rs_more) {
/*
@@ -8865,9 +8891,7 @@
if (sc->sc_softled)
ath_hal_gpioCfgOutput(ah, sc->sc_ledpin);
- if ((sc->sc_opmode != HAL_M_STA) && sc->sc_hasintmit)
- ath_hal_setintmit(ah, 0);
-
+ ath_setintmit(sc);
sc->sc_curchan = hchan;
ath_update_txpow(sc); /* update tx power state */
ath_radar_update(sc);
@@ -10644,9 +10668,54 @@
ATH_RP_IGNORED = 24,
ATH_RADAR_IGNORED = 25,
ATH_MAXVAPS = 26,
+ ATH_INTMIT = 27,
+ ATH_NOISE_IMMUNITY = 28,
+ ATH_OFDM_WEAK_DET = 29
};
static int
+ath_sysctl_set_intmit(struct ath_softc *sc, long ctl, u_int val)
+{
+ int ret;
+
+ switch(ctl) {
+ case ATH_INTMIT:
+ sc->sc_intmit = val;
+ break;
+ case ATH_NOISE_IMMUNITY:
+ sc->sc_noise_immunity = val;
+ break;
+ case ATH_OFDM_WEAK_DET:
+ sc->sc_ofdm_weak_det = val;
+ break;
+ default:
+ return -EINVAL;
+ }
+ ret = ath_setintmit(sc);
+ ath_calcrxfilter(sc);
+ return ret;
+}
+
+static int
+ath_sysctl_get_intmit(struct ath_softc *sc, long ctl, u_int *val)
+{
+ struct ath_hal *ah = sc->sc_ah;
+
+ switch(ctl) {
+ case ATH_INTMIT:
+ *val = (ath_hal_getcapability(ah, HAL_CAP_INTMIT, 1, NULL) == HAL_OK);
+ break;
+ case ATH_NOISE_IMMUNITY:
+ return ath_hal_getcapability(ah, HAL_CAP_INTMIT, 2, val);
+ case ATH_OFDM_WEAK_DET:
+ return ath_hal_getcapability(ah, HAL_CAP_INTMIT, 3, val);
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int
ATH_SYSCTL_DECL(ath_sysctl_halparam, ctl, write, filp, buffer, lenp, ppos)
{
struct ath_softc *sc = ctl->extra1;
@@ -10832,6 +10901,11 @@
case ATH_RADAR_IGNORED:
sc->sc_radar_ignored = val;
break;
+ case ATH_INTMIT:
+ case ATH_NOISE_IMMUNITY:
+ case ATH_OFDM_WEAK_DET:
+ ret = ath_sysctl_set_intmit(sc, (long)ctl->extra2, val);
+ break;
default:
ret = -EINVAL;
break;
@@ -10898,6 +10972,11 @@
case ATH_RADAR_IGNORED:
val = sc->sc_radar_ignored;
break;
+ case ATH_INTMIT:
+ case ATH_NOISE_IMMUNITY:
+ case ATH_OFDM_WEAK_DET:
+ ret = ath_sysctl_get_intmit(sc, (long)ctl->extra2, &val);
+ break;
default:
ret = -EINVAL;
break;
@@ -11075,6 +11154,24 @@
.proc_handler = ath_sysctl_halparam,
.extra2 = (void *)ATH_RADAR_IGNORED,
},
+ { .ctl_name = CTL_AUTO,
+ .procname = "intmit",
+ .mode = 0644,
+ .proc_handler = ath_sysctl_halparam,
+ .extra2 = (void *)ATH_INTMIT,
+ },
+ { .ctl_name = CTL_AUTO,
+ .procname = "noise_immunity",
+ .mode = 0644,
+ .proc_handler = ath_sysctl_halparam,
+ .extra2 = (void *)ATH_NOISE_IMMUNITY,
+ },
+ { .ctl_name = CTL_AUTO,
+ .procname = "ofdm_weak_det",
+ .mode = 0644,
+ .proc_handler = ath_sysctl_halparam,
+ .extra2 = (void *)ATH_OFDM_WEAK_DET,
+ },
{ 0 }
};
Index: madwifi-trunk-r3314/ath/if_athvar.h
===================================================================
--- madwifi-trunk-r3314.orig/ath/if_athvar.h 2008-06-13 10:39:28.000000000 +0200
+++ madwifi-trunk-r3314/ath/if_athvar.h 2008-06-13 10:39:32.000000000 +0200
@@ -693,6 +693,10 @@
unsigned int sc_txcont_power; /* Continuous transmit power in 0.5dBm units */
unsigned int sc_txcont_rate; /* Continuous transmit rate in Mbps */
+ int8_t sc_intmit; /* Interference mitigation enabled, -1 = auto, based on mode, 0/1 = off/on */
+ int8_t sc_noise_immunity; /* Noise immunity level, 0-4, -1 == auto) */
+ int8_t sc_ofdm_weak_det; /* OFDM weak frames detection, -1 == auto */
+
/* rate tables */
const HAL_RATE_TABLE *sc_rates[IEEE80211_MODE_MAX];
const HAL_RATE_TABLE *sc_currates; /* current rate table */
Index: madwifi-trunk-r3314/ath/if_ath_hal.h
===================================================================
--- madwifi-trunk-r3314.orig/ath/if_ath_hal.h 2008-06-13 10:39:26.000000000 +0200
+++ madwifi-trunk-r3314/ath/if_ath_hal.h 2008-06-13 10:39:32.000000000 +0200
@@ -67,14 +67,14 @@
static inline HAL_BOOL ath_hal_getdiagstate(struct ath_hal *ah, int request,
const void *args, u_int32_t argsize,
- void **result,
+ void *result,
u_int32_t *resultsize)
{
HAL_BOOL ret;
ATH_HAL_LOCK_IRQ(ah->ah_sc);
ath_hal_set_function(__func__);
ret =
- ah->ah_getDiagState(ah, request, args, argsize, *result,
+ ah->ah_getDiagState(ah, request, args, argsize, result,
resultsize);
ath_hal_set_function(NULL);
ATH_HAL_UNLOCK_IRQ(ah->ah_sc);
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