diff options
Diffstat (limited to 'package/madwifi/patches/454-cca.patch')
| -rw-r--r-- | package/madwifi/patches/454-cca.patch | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/package/madwifi/patches/454-cca.patch b/package/madwifi/patches/454-cca.patch new file mode 100644 index 000000000..53792cc8f --- /dev/null +++ b/package/madwifi/patches/454-cca.patch @@ -0,0 +1,186 @@ +--- a/ath/if_ath.c ++++ b/ath/if_ath.c +@@ -383,6 +383,8 @@ static void ath_poll_disable(struct net_ + static void ath_poll_enable(struct net_device *dev); + static void ath_fetch_idle_time(struct ath_softc *sc); + static void ath_set_timing(struct ath_softc *sc); ++static void ath_update_cca_thresh(struct ath_softc *sc); ++static int ath_hw_read_nf(struct ath_softc *sc); + + /* calibrate every 30 secs in steady state but check every second at first. */ + static int ath_calinterval = ATH_SHORT_CALINTERVAL; +@@ -2623,6 +2625,10 @@ ath_init(struct net_device *dev) + goto done; + } + ++ ath_hal_process_noisefloor(ah); ++ ic->ic_channoise = ath_hal_get_channel_noise(ah, &(sc->sc_curchan)); ++ ath_update_cca_thresh(sc); ++ + if (sc->sc_softled) + ath_hal_gpioCfgOutput(ah, sc->sc_ledpin); + +@@ -3024,6 +3030,10 @@ ath_reset(struct net_device *dev) + EPRINTF(sc, "Unable to reset hardware: '%s' (HAL status %u)\n", + ath_get_hal_status_desc(status), status); + ++ ath_hal_process_noisefloor(ah); ++ ic->ic_channoise = ath_hal_get_channel_noise(ah, &(sc->sc_curchan)); ++ ath_update_cca_thresh(sc); ++ + ath_setintmit(sc); + ath_update_txpow(sc); /* update tx power state */ + ath_radar_update(sc); +@@ -9374,9 +9384,11 @@ ath_calibrate(unsigned long arg) + sc->sc_curchan.channel); + sc->sc_stats.ast_per_calfail++; + } +- ic->ic_channoise = ath_hal_get_channel_noise(ah, &(sc->sc_curchan)); + + ath_hal_process_noisefloor(ah); ++ ic->ic_channoise = ath_hal_get_channel_noise(ah, &(sc->sc_curchan)); ++ ath_update_cca_thresh(sc); ++ + if (isIQdone == AH_TRUE) { + /* Unless user has overridden calibration interval, + * upgrade to less frequent calibration */ +@@ -9711,8 +9723,6 @@ ath_newstate(struct ieee80211vap *vap, e + break; + } + +- ath_hal_process_noisefloor(ah); +- ic->ic_channoise = ath_hal_get_channel_noise(ah, &(sc->sc_curchan)); + /* + * Reset rssi stats; maybe not the best place... + */ +@@ -10968,6 +10978,7 @@ enum { + ATH_INTMIT, + ATH_NOISE_IMMUNITY, + ATH_OFDM_WEAK_DET, ++ ATH_CCA_THRESH, + ATH_CHANBW, + ATH_OUTDOOR, + ATH_DISTANCE, +@@ -11110,6 +11121,66 @@ ath_sysctl_get_intmit(struct ath_softc * + return 0; + } + ++#define AR_PHY_CCA 0x9864 ++#define AR_PHY_MINCCA_PWR 0x0FF80000 ++#define AR_PHY_MINCCA_PWR_S 19 ++#define AR_PHY_CCA_THRESH62 0x0007F000 ++#define AR_PHY_CCA_THRESH62_S 12 ++ ++static int ++ath_nf_from_cca(u32 phy_cca) ++{ ++ int nf = (phy_cca >> 19) & 0x1ff; ++ nf = -((nf ^ 0x1ff) + 1); ++ return nf; ++} ++ ++static int ++ath_hw_read_nf(struct ath_softc *sc) ++{ ++ return ath_nf_from_cca(OS_REG_READ(sc->sc_ah, AR_PHY_CCA)); ++} ++ ++static void ++ath_update_cca_thresh(struct ath_softc *sc) ++{ ++ struct ath_hal *ah = sc->sc_ah; ++ int newthr = 0; ++ u32 phy_cca; ++ int nf; ++ ++ phy_cca = OS_REG_READ(ah, AR_PHY_CCA); ++ if (sc->sc_cca_thresh < 0) { ++ newthr = sc->sc_cca_thresh - ath_nf_from_cca(phy_cca); ++ ++ /* 0xf is a typical eeprom value for thresh62, ++ * use it as minimum for signal based thresholds ++ * to prevent complete connection drops */ ++ if (newthr < 0xf) ++ newthr = 0xf; ++ } else { ++ newthr = sc->sc_cca_thresh; ++ } ++ ++ if ((newthr < 4) || (newthr >= 127)) ++ return; ++ ++ phy_cca &= ~AR_PHY_CCA_THRESH62; ++ phy_cca |= newthr << AR_PHY_CCA_THRESH62_S; ++ OS_REG_WRITE(ah, AR_PHY_CCA, phy_cca); ++} ++ ++static int ++ath_get_cca_thresh(struct ath_softc *sc) ++{ ++ struct ath_hal *ah = sc->sc_ah; ++ u32 phy_cca; ++ ++ phy_cca = OS_REG_READ(ah, AR_PHY_CCA); ++ return ath_nf_from_cca(phy_cca) + ++ ((phy_cca & AR_PHY_CCA_THRESH62) >> AR_PHY_CCA_THRESH62_S); ++} ++ + static int + ATH_SYSCTL_DECL(ath_sysctl_hwinfo, ctl, write, filp, buffer, lenp, ppos) + { +@@ -11356,6 +11427,10 @@ ATH_SYSCTL_DECL(ath_sysctl_halparam, ctl + case ATH_OFDM_WEAK_DET: + ret = ath_sysctl_set_intmit(sc, (long)ctl->extra2, val); + break; ++ case ATH_CCA_THRESH: ++ sc->sc_cca_thresh = val; ++ ath_update_cca_thresh(sc); ++ break; + default: + ret = -EINVAL; + break; +@@ -11436,6 +11511,9 @@ ATH_SYSCTL_DECL(ath_sysctl_halparam, ctl + case ATH_OFDM_WEAK_DET: + ret = ath_sysctl_get_intmit(sc, (long)ctl->extra2, &val); + break; ++ case ATH_CCA_THRESH: ++ val = ath_get_cca_thresh(sc); ++ break; + default: + ret = -EINVAL; + break; +@@ -11667,6 +11745,12 @@ static const ctl_table ath_sysctl_templa + .proc_handler = ath_sysctl_halparam, + .extra2 = (void *)ATH_OFDM_WEAK_DET, + }, ++ { .ctl_name = CTL_AUTO, ++ .procname = "cca_thresh", ++ .mode = 0644, ++ .proc_handler = ath_sysctl_halparam, ++ .extra2 = (void *)ATH_CCA_THRESH, ++ }, + { 0 } + }; + +--- a/ath/if_athvar.h ++++ b/ath/if_athvar.h +@@ -844,6 +844,7 @@ struct ath_softc { + int sc_cal_interval; /* current calibration interval */ + struct timer_list sc_cal_ch; /* calibration timer */ + HAL_NODE_STATS sc_halstats; /* station-mode rssi stats */ ++ int sc_cca_thresh; /* configured CCA threshold */ + + struct ctl_table_header *sc_sysctl_header; + struct ctl_table *sc_sysctls; +--- a/ath/ath_wprobe.c ++++ b/ath/ath_wprobe.c +@@ -133,8 +133,7 @@ ath_wprobe_sync(struct wprobe_iface *dev + rx = READ_CLR(ah, AR5K_RXFC); + tx = READ_CLR(ah, AR5K_TXFC); + OS_REG_WRITE(ah, AR5K_MIBC, 0); +- noise = ath_hal_get_channel_noise(sc->sc_ah, &(sc->sc_curchan)); +- ic->ic_channoise = noise; ++ noise = ath_hw_read_nf(sc); + + WPROBE_FILL_BEGIN(val, ath_wprobe_globals); + if (cc & 0xf0000000) { |