diff options
Diffstat (limited to 'package/madwifi/patches/375-atim_tsf_update.patch')
| -rw-r--r-- | package/madwifi/patches/375-atim_tsf_update.patch | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/package/madwifi/patches/375-atim_tsf_update.patch b/package/madwifi/patches/375-atim_tsf_update.patch deleted file mode 100644 index d1313aa564..0000000000 --- a/package/madwifi/patches/375-atim_tsf_update.patch +++ /dev/null @@ -1,141 +0,0 @@ ---- a/ath/if_ath.c -+++ b/ath/if_ath.c -@@ -161,6 +161,7 @@ static void ath_beacon_send(struct ath_s - static void ath_beacon_return(struct ath_softc *, struct ath_buf *); - static void ath_beacon_free(struct ath_softc *); - static void ath_beacon_config(struct ath_softc *, struct ieee80211vap *); -+static void ath_hw_beacon_stop(struct ath_softc *sc); - static int ath_desc_alloc(struct ath_softc *); - static void ath_desc_free(struct ath_softc *); - static void ath_desc_swap(struct ath_desc *); -@@ -2793,6 +2794,72 @@ ath_set_ack_bitrate(struct ath_softc *sc - return 1; - } - -+static void -+ath_hw_beacon_stop(struct ath_softc *sc) -+{ -+ HAL_BEACON_TIMERS btimers; -+ -+ btimers.bt_intval = 0; -+ btimers.bt_nexttbtt = 0; -+ btimers.bt_nextdba = 0xffffffff; -+ btimers.bt_nextswba = 0xffffffff; -+ btimers.bt_nextatim = 0; -+ -+ ath_hal_setbeacontimers(sc->sc_ah, &btimers); -+} -+ -+/* Fix up the ATIM window after TSF resync */ -+static int -+ath_hw_check_atim(struct ath_softc *sc, int window, int intval) -+{ -+#define AR5K_TIMER0_5210 0x802c /* Next beacon time register */ -+#define AR5K_TIMER0_5211 0x8028 -+#define AR5K_TIMER3_5210 0x8038 /* End of ATIM window time register */ -+#define AR5K_TIMER3_5211 0x8034 -+ struct ath_hal *ah = sc->sc_ah; -+ int dev = sc->sc_ah->ah_macType; -+ unsigned int nbtt, atim; -+ int is_5210 = 0; -+ -+ /* -+ * check if the ATIM window is still correct: -+ * 1.) usually ATIM should be NBTT + window -+ * 2.) nbtt already updated -+ * 3.) nbtt already updated and has wrapped around -+ * 4.) atim has wrapped around -+ */ -+ switch(dev) { -+ case 5210: -+ nbtt = OS_REG_READ(ah, AR5K_TIMER0_5210); -+ atim = OS_REG_READ(ah, AR5K_TIMER3_5210); -+ is_5210 = 1; -+ break; -+ case 5211: -+ case 5212: -+ nbtt = OS_REG_READ(ah, AR5K_TIMER0_5211); -+ atim = OS_REG_READ(ah, AR5K_TIMER3_5211); -+ break; -+ /* NB: 5416+ doesn't do ATIM in hw */ -+ case 5416: -+ default: -+ return 0; -+ } -+ -+ if ((atim - nbtt != window) && /* 1.) */ -+ (nbtt - atim != intval - window) && /* 2.) */ -+ ((nbtt | 0x10000) - atim != intval - window) && /* 3.) */ -+ ((atim | 0x10000) - nbtt != window)) { /* 4.) */ -+ if (is_5210) -+ OS_REG_WRITE(ah, AR5K_TIMER3_5210, nbtt + window ); -+ else -+ OS_REG_WRITE(ah, AR5K_TIMER3_5211, nbtt + window ); -+ return atim - nbtt; -+ } -+ -+ return 0; -+} -+ -+ - /* - * Reset the hardware w/o losing operational state. This is - * basically a more efficient way of doing ath_stop, ath_init, -@@ -5294,6 +5361,7 @@ ath_beacon_config(struct ath_softc *sc, - u_int64_t tsf, hw_tsf; - u_int32_t tsftu, hw_tsftu; - u_int32_t intval, nexttbtt = 0; -+ unsigned long flags; - int reset_tsf = 0; - - if (vap == NULL) -@@ -5301,6 +5369,9 @@ ath_beacon_config(struct ath_softc *sc, - - ni = vap->iv_bss; - -+ /* TSF calculation is timing critical - we don't want to be interrupted here */ -+ local_irq_save(flags); -+ - hw_tsf = ath_hal_gettsf64(ah); - tsf = le64_to_cpu(ni->ni_tstamp.tsf); - hw_tsftu = hw_tsf >> 10; -@@ -5490,15 +5561,27 @@ ath_beacon_config(struct ath_softc *sc, - <= ath_hal_sw_beacon_response_time) - nexttbtt += intval; - sc->sc_nexttbtt = nexttbtt; -+ -+ /* stop beacons before reconfiguring the timers to avoid race -+ * conditions. ath_hal_beaconinit will start them again */ -+ ath_hw_beacon_stop(sc); -+ - ath_hal_beaconinit(ah, nexttbtt, intval); - if (intval & HAL_BEACON_RESET_TSF) { - sc->sc_last_tsf = 0; - } - sc->sc_bmisscount = 0; - ath_hal_intrset(ah, sc->sc_imask); -+ -+ if ((sc->sc_opmode == HAL_M_IBSS) && ath_hw_check_atim(sc, 1, intval & HAL_BEACON_PERIOD)) { -+ DPRINTF(sc, ATH_DEBUG_BEACON, -+ "fixed atim window after beacon init\n"); -+ } - } - - ath_beacon_config_debug: -+ local_irq_restore(flags); -+ - /* We print all debug messages here, in order to preserve the - * time critical aspect of this function */ - DPRINTF(sc, ATH_DEBUG_BEACON, -@@ -6401,6 +6484,11 @@ ath_recv_mgmt(struct ieee80211vap * vap, - DPRINTF(sc, ATH_DEBUG_BEACON, - "Updated beacon timers\n"); - } -+ if ((sc->sc_opmode == HAL_M_IBSS) && -+ IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid) && -+ ath_hw_check_atim(sc, 1, vap->iv_bss->ni_intval)) { -+ DPRINTF(sc, ATH_DEBUG_ANY, "Fixed ATIM window after beacon recv\n"); -+ } - /* NB: Fall Through */ - case IEEE80211_FC0_SUBTYPE_PROBE_RESP: - if (vap->iv_opmode == IEEE80211_M_IBSS && |