diff options
Diffstat (limited to 'package/madwifi/patches/375-atim_tsf_update.patch')
| -rw-r--r-- | package/madwifi/patches/375-atim_tsf_update.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/package/madwifi/patches/375-atim_tsf_update.patch b/package/madwifi/patches/375-atim_tsf_update.patch new file mode 100644 index 0000000000..bbe380ed47 --- /dev/null +++ b/package/madwifi/patches/375-atim_tsf_update.patch @@ -0,0 +1,59 @@ +--- a/ath/if_ath.c ++++ b/ath/if_ath.c +@@ -2785,6 +2785,44 @@ + return 1; + } + ++/* Fix up the ATIM window after TSF resync */ ++static int ++ath_hw_check_atim(struct ath_softc *sc, int window) ++{ ++#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; ++ unsigned int nbtt, atim; ++ int dev = ar_device(sc->devid); ++ ++ switch(dev) { ++ case 5210: ++ nbtt = OS_REG_READ(ah, AR5K_TIMER0_5210); ++ atim = OS_REG_READ(ah, AR5K_TIMER3_5210); ++ if (atim - nbtt != window) { ++ OS_REG_WRITE(ah, AR5K_TIMER3_5210, nbtt + window ); ++ return atim - nbtt; ++ } ++ break; ++ case 5211: ++ case 5212: ++ nbtt = OS_REG_READ(ah, AR5K_TIMER0_5211); ++ atim = OS_REG_READ(ah, AR5K_TIMER3_5211); ++ if (atim - nbtt != window) { ++ OS_REG_WRITE(ah, AR5K_TIMER3_5211, nbtt + window ); ++ return atim - nbtt; ++ } ++ break; ++ /* NB: 5416+ doesn't do ATIM in hw */ ++ default: ++ break; ++ } ++ return 0; ++} ++ ++ + /* + * Reset the hardware w/o losing operational state. This is + * basically a more efficient way of doing ath_stop, ath_init, +@@ -6391,6 +6429,11 @@ + DPRINTF(sc, ATH_DEBUG_BEACON, + "Updated beacon timers\n"); + } ++ if ((sc->sc_opmode == IEEE80211_M_IBSS) && ++ IEEE80211_ADDR_EQ(ni->ni_bssid, vap->iv_bss->ni_bssid) && ++ ath_hw_check_atim(sc, 1)) { ++ 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 && |