diff options
Diffstat (limited to 'drivers/net/wireless/ath9k/core.c')
-rw-r--r-- | drivers/net/wireless/ath9k/core.c | 306 |
1 files changed, 73 insertions, 233 deletions
diff --git a/drivers/net/wireless/ath9k/core.c b/drivers/net/wireless/ath9k/core.c index f6c4528..c262ef2 100644 --- a/drivers/net/wireless/ath9k/core.c +++ b/drivers/net/wireless/ath9k/core.c @@ -21,9 +21,6 @@ static int ath_outdoor; /* enable outdoor use */ -static const u8 ath_bcast_mac[ETH_ALEN] = - { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; - static u32 ath_chainmask_sel_up_rssi_thres = ATH_CHAINMASK_SEL_UP_RSSI_THRES; static u32 ath_chainmask_sel_down_rssi_thres = @@ -54,10 +51,8 @@ static void bus_read_cachesize(struct ath_softc *sc, int *csz) * Set current operating mode * * This function initializes and fills the rate table in the ATH object based - * on the operating mode. The blink rates are also set up here, although - * they have been superceeded by the ath_led module. + * on the operating mode. */ - static void ath_setcurmode(struct ath_softc *sc, enum wireless_mode mode) { const struct ath9k_rate_table *rt; @@ -235,7 +230,7 @@ static int ath_setup_channels(struct ath_softc *sc) * Determine mode from channel flags * * This routine will provide the enumerated WIRELESSS_MODE value based - * on the settings of the channel flags. If ho valid set of flags + * on the settings of the channel flags. If no valid set of flags * exist, the lowest mode (11b) is selected. */ @@ -260,7 +255,8 @@ static enum wireless_mode ath_chan2mode(struct ath9k_channel *chan) else if (chan->chanmode == CHANNEL_G_HT40MINUS) return ATH9K_MODE_11NG_HT40MINUS; - /* NB: should not get here */ + WARN_ON(1); /* should not get here */ + return ATH9K_MODE_11B; } @@ -275,14 +271,12 @@ static int ath_stop(struct ath_softc *sc) { struct ath_hal *ah = sc->sc_ah; - DPRINTF(sc, ATH_DBG_CONFIG, "%s: invalid %u\n", - __func__, sc->sc_invalid); + DPRINTF(sc, ATH_DBG_CONFIG, "%s: invalid %ld\n", + __func__, sc->sc_flags & SC_OP_INVALID); /* * Shutdown the hardware and driver: * stop output from above - * reset 802.11 state machine - * (sends station deassoc/deauth frames) * turn off timers * disable interrupts * clear transmit machinery @@ -294,10 +288,10 @@ static int ath_stop(struct ath_softc *sc) * hardware is gone (invalid). */ - if (!sc->sc_invalid) + if (!(sc->sc_flags & SC_OP_INVALID)) ath9k_hw_set_interrupts(ah, 0); ath_draintxq(sc, false); - if (!sc->sc_invalid) { + if (!(sc->sc_flags & SC_OP_INVALID)) { ath_stoprecv(sc); ath9k_hw_phy_disable(ah); } else @@ -307,56 +301,6 @@ static int ath_stop(struct ath_softc *sc) } /* - * Start Scan - * - * This function is called when starting a channel scan. It will perform - * power save wakeup processing, set the filter for the scan, and get the - * chip ready to send broadcast packets out during the scan. -*/ - -void ath_scan_start(struct ath_softc *sc) -{ - struct ath_hal *ah = sc->sc_ah; - u32 rfilt; - u32 now = (u32) jiffies_to_msecs(get_timestamp()); - - sc->sc_scanning = 1; - rfilt = ath_calcrxfilter(sc); - ath9k_hw_setrxfilter(ah, rfilt); - ath9k_hw_write_associd(ah, ath_bcast_mac, 0); - - /* Restore previous power management state. */ - - DPRINTF(sc, ATH_DBG_CONFIG, "%d.%03d | %s: RX filter 0x%x aid 0\n", - now / 1000, now % 1000, __func__, rfilt); -} - -/* - * Scan End - * - * This routine is called by the upper layer when the scan is completed. This - * will set the filters back to normal operating mode, set the BSSID to the - * correct value, and restore the power save state. -*/ - -void ath_scan_end(struct ath_softc *sc) -{ - struct ath_hal *ah = sc->sc_ah; - u32 rfilt; - u32 now = (u32) jiffies_to_msecs(get_timestamp()); - - sc->sc_scanning = 0; - /* Request for a full reset due to rx packet filter changes */ - sc->sc_full_reset = 1; - rfilt = ath_calcrxfilter(sc); - ath9k_hw_setrxfilter(ah, rfilt); - ath9k_hw_write_associd(ah, sc->sc_curbssid, sc->sc_curaid); - - DPRINTF(sc, ATH_DBG_CONFIG, "%d.%03d | %s: RX filter 0x%x aid 0x%x\n", - now / 1000, now % 1000, __func__, rfilt, sc->sc_curaid); -} - -/* * Set the current channel * * Set/change channels. If the channel is really being changed, it's done @@ -367,25 +311,23 @@ int ath_set_channel(struct ath_softc *sc, struct ath9k_channel *hchan) { struct ath_hal *ah = sc->sc_ah; bool fastcc = true, stopped; - enum ath9k_ht_macmode ht_macmode; - if (sc->sc_invalid) /* if the device is invalid or removed */ + if (sc->sc_flags & SC_OP_INVALID) /* the device is invalid or removed */ return -EIO; DPRINTF(sc, ATH_DBG_CONFIG, "%s: %u (%u MHz) -> %u (%u MHz), cflags:%x\n", __func__, - ath9k_hw_mhz2ieee(ah, sc->sc_curchan.channel, - sc->sc_curchan.channelFlags), - sc->sc_curchan.channel, + ath9k_hw_mhz2ieee(ah, sc->sc_ah->ah_curchan->channel, + sc->sc_ah->ah_curchan->channelFlags), + sc->sc_ah->ah_curchan->channel, ath9k_hw_mhz2ieee(ah, hchan->channel, hchan->channelFlags), hchan->channel, hchan->channelFlags); - ht_macmode = ath_cwm_macmode(sc); - - if (hchan->channel != sc->sc_curchan.channel || - hchan->channelFlags != sc->sc_curchan.channelFlags || - sc->sc_update_chainmask || sc->sc_full_reset) { + if (hchan->channel != sc->sc_ah->ah_curchan->channel || + hchan->channelFlags != sc->sc_ah->ah_curchan->channelFlags || + (sc->sc_flags & SC_OP_CHAINMASK_UPDATE) || + (sc->sc_flags & SC_OP_FULL_RESET)) { int status; /* * This is only performed if the channel settings have @@ -404,15 +346,16 @@ int ath_set_channel(struct ath_softc *sc, struct ath9k_channel *hchan) * to flush data frames already in queue because of * changing channel. */ - if (!stopped || sc->sc_full_reset) + if (!stopped || (sc->sc_flags & SC_OP_FULL_RESET)) fastcc = false; spin_lock_bh(&sc->sc_resetlock); - if (!ath9k_hw_reset(ah, sc->sc_opmode, hchan, - ht_macmode, sc->sc_tx_chainmask, - sc->sc_rx_chainmask, - sc->sc_ht_extprotspacing, - fastcc, &status)) { + if (!ath9k_hw_reset(ah, hchan, + sc->sc_ht_info.tx_chan_width, + sc->sc_tx_chainmask, + sc->sc_rx_chainmask, + sc->sc_ht_extprotspacing, + fastcc, &status)) { DPRINTF(sc, ATH_DBG_FATAL, "%s: unable to reset channel %u (%uMhz) " "flags 0x%x hal status %u\n", __func__, @@ -424,9 +367,8 @@ int ath_set_channel(struct ath_softc *sc, struct ath9k_channel *hchan) } spin_unlock_bh(&sc->sc_resetlock); - sc->sc_curchan = *hchan; - sc->sc_update_chainmask = 0; - sc->sc_full_reset = 0; + sc->sc_flags &= ~SC_OP_CHAINMASK_UPDATE; + sc->sc_flags &= ~SC_OP_FULL_RESET; /* Re-enable rx framework */ if (ath_startrecv(sc) != 0) { @@ -537,7 +479,7 @@ int ath_chainmask_sel_logic(struct ath_softc *sc, struct ath_node *an) void ath_update_chainmask(struct ath_softc *sc, int is_ht) { - sc->sc_update_chainmask = 1; + sc->sc_flags |= SC_OP_CHAINMASK_UPDATE; if (is_ht) { sc->sc_tx_chainmask = sc->sc_ah->ah_caps.tx_chainmask; sc->sc_rx_chainmask = sc->sc_ah->ah_caps.rx_chainmask; @@ -554,62 +496,6 @@ void ath_update_chainmask(struct ath_softc *sc, int is_ht) /* VAP management */ /******************/ -/* - * VAP in Listen mode - * - * This routine brings the VAP out of the down state into a "listen" state - * where it waits for association requests. This is used in AP and AdHoc - * modes. -*/ - -int ath_vap_listen(struct ath_softc *sc, int if_id) -{ - struct ath_hal *ah = sc->sc_ah; - struct ath_vap *avp; - u32 rfilt = 0; - DECLARE_MAC_BUF(mac); - - avp = sc->sc_vaps[if_id]; - if (avp == NULL) { - DPRINTF(sc, ATH_DBG_FATAL, "%s: invalid interface id %u\n", - __func__, if_id); - return -EINVAL; - } - -#ifdef CONFIG_SLOW_ANT_DIV - ath_slow_ant_div_stop(&sc->sc_antdiv); -#endif - - /* update ratectrl about the new state */ - ath_rate_newstate(sc, avp); - - rfilt = ath_calcrxfilter(sc); - ath9k_hw_setrxfilter(ah, rfilt); - - if (sc->sc_opmode == ATH9K_M_STA || sc->sc_opmode == ATH9K_M_IBSS) { - memcpy(sc->sc_curbssid, ath_bcast_mac, ETH_ALEN); - ath9k_hw_write_associd(ah, sc->sc_curbssid, sc->sc_curaid); - } else - sc->sc_curaid = 0; - - DPRINTF(sc, ATH_DBG_CONFIG, - "%s: RX filter 0x%x bssid %s aid 0x%x\n", - __func__, rfilt, print_mac(mac, - sc->sc_curbssid), sc->sc_curaid); - - /* - * XXXX - * Disable BMISS interrupt when we're not associated - */ - ath9k_hw_set_interrupts(ah, - sc->sc_imask & ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS)); - sc->sc_imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS); - /* need to reconfigure the beacons when it moves to RUN */ - sc->sc_beacons = 0; - - return 0; -} - int ath_vap_attach(struct ath_softc *sc, int if_id, struct ieee80211_vif *if_data, @@ -647,16 +533,13 @@ int ath_vap_attach(struct ath_softc *sc, /* Set the VAP opmode */ avp->av_opmode = opmode; avp->av_bslot = -1; - INIT_LIST_HEAD(&avp->av_mcastq.axq_q); - INIT_LIST_HEAD(&avp->av_mcastq.axq_acq); - spin_lock_init(&avp->av_mcastq.axq_lock); ath9k_hw_set_tsfadjust(sc->sc_ah, 1); sc->sc_vaps[if_id] = avp; sc->sc_nvaps++; /* Set the device opmode */ - sc->sc_opmode = opmode; + sc->sc_ah->ah_opmode = opmode; /* default VAP configuration */ avp->av_config.av_fixed_rateset = IEEE80211_FIXED_RATE_NONE; @@ -689,9 +572,6 @@ int ath_vap_detach(struct ath_softc *sc, int if_id) ath_stoprecv(sc); /* stop recv side */ ath_flushrecv(sc); /* flush recv queue */ - /* Reclaim any pending mcast bufs on the vap. */ - ath_tx_draintxq(sc, &avp->av_mcastq, false); - kfree(avp); sc->sc_vaps[if_id] = NULL; sc->sc_nvaps--; @@ -728,9 +608,9 @@ int ath_open(struct ath_softc *sc, struct ath9k_channel *initial_chan) struct ath_hal *ah = sc->sc_ah; int status; int error = 0; - enum ath9k_ht_macmode ht_macmode = ath_cwm_macmode(sc); - DPRINTF(sc, ATH_DBG_CONFIG, "%s: mode %d\n", __func__, sc->sc_opmode); + DPRINTF(sc, ATH_DBG_CONFIG, "%s: mode %d\n", + __func__, sc->sc_ah->ah_opmode); /* * Stop anything previously setup. This is safe @@ -752,16 +632,16 @@ int ath_open(struct ath_softc *sc, struct ath9k_channel *initial_chan) * be followed by initialization of the appropriate bits * and then setup of the interrupt mask. */ - sc->sc_curchan = *initial_chan; spin_lock_bh(&sc->sc_resetlock); - if (!ath9k_hw_reset(ah, sc->sc_opmode, &sc->sc_curchan, ht_macmode, - sc->sc_tx_chainmask, sc->sc_rx_chainmask, - sc->sc_ht_extprotspacing, false, &status)) { + if (!ath9k_hw_reset(ah, initial_chan, + sc->sc_ht_info.tx_chan_width, + sc->sc_tx_chainmask, sc->sc_rx_chainmask, + sc->sc_ht_extprotspacing, false, &status)) { DPRINTF(sc, ATH_DBG_FATAL, "%s: unable to reset hardware; hal status %u " "(freq %u flags 0x%x)\n", __func__, status, - sc->sc_curchan.channel, sc->sc_curchan.channelFlags); + initial_chan->channel, initial_chan->channelFlags); error = -EIO; spin_unlock_bh(&sc->sc_resetlock); goto done; @@ -802,7 +682,8 @@ int ath_open(struct ath_softc *sc, struct ath9k_channel *initial_chan) * Note we only do this (at the moment) for station mode. */ if (ath9k_hw_phycounters(ah) && - ((sc->sc_opmode == ATH9K_M_STA) || (sc->sc_opmode == ATH9K_M_IBSS))) + ((sc->sc_ah->ah_opmode == ATH9K_M_STA) || + (sc->sc_ah->ah_opmode == ATH9K_M_IBSS))) sc->sc_imask |= ATH9K_INT_MIB; /* * Some hardware processes the TIM IE and fires an @@ -811,7 +692,7 @@ int ath_open(struct ath_softc *sc, struct ath9k_channel *initial_chan) * enable the TIM interrupt when operating as station. */ if ((ah->ah_caps.hw_caps & ATH9K_HW_CAP_ENHANCEDPM) && - (sc->sc_opmode == ATH9K_M_STA) && + (sc->sc_ah->ah_opmode == ATH9K_M_STA) && !sc->sc_config.swBeaconProcess) sc->sc_imask |= ATH9K_INT_TIM; /* @@ -823,34 +704,34 @@ int ath_open(struct ath_softc *sc, struct ath9k_channel *initial_chan) /* XXX: we must make sure h/w is ready and clear invalid flag * before turning on interrupt. */ - sc->sc_invalid = 0; + sc->sc_flags &= ~SC_OP_INVALID; done: return error; } -/* - * Reset the hardware w/o losing operational state. This is - * basically a more efficient way of doing ath_stop, ath_init, - * followed by state transitions to the current 802.11 - * operational state. Used to recover from errors rx overrun - * and to reset the hardware when rf gain settings must be reset. - */ - -static int ath_reset_start(struct ath_softc *sc, u32 flag) +int ath_reset(struct ath_softc *sc, bool retry_tx) { struct ath_hal *ah = sc->sc_ah; + int status; + int error = 0; ath9k_hw_set_interrupts(ah, 0); /* disable interrupts */ - ath_draintxq(sc, flag & RESET_RETRY_TXQ); /* stop xmit side */ - ath_stoprecv(sc); /* stop recv side */ - ath_flushrecv(sc); /* flush recv queue */ + ath_draintxq(sc, retry_tx); /* stop xmit */ + ath_stoprecv(sc); /* stop recv */ + ath_flushrecv(sc); /* flush recv queue */ - return 0; -} - -static int ath_reset_end(struct ath_softc *sc, u32 flag) -{ - struct ath_hal *ah = sc->sc_ah; + /* Reset chip */ + spin_lock_bh(&sc->sc_resetlock); + if (!ath9k_hw_reset(ah, sc->sc_ah->ah_curchan, + sc->sc_ht_info.tx_chan_width, + sc->sc_tx_chainmask, sc->sc_rx_chainmask, + sc->sc_ht_extprotspacing, false, &status)) { + DPRINTF(sc, ATH_DBG_FATAL, + "%s: unable to reset hardware; hal status %u\n", + __func__, status); + error = -EIO; + } + spin_unlock_bh(&sc->sc_resetlock); if (ath_startrecv(sc) != 0) /* restart recv */ DPRINTF(sc, ATH_DBG_FATAL, @@ -861,16 +742,17 @@ static int ath_reset_end(struct ath_softc *sc, u32 flag) * that changes the channel so update any state that * might change as a result. */ - ath_setcurmode(sc, ath_chan2mode(&sc->sc_curchan)); + ath_setcurmode(sc, ath_chan2mode(sc->sc_ah->ah_curchan)); - ath_update_txpow(sc); /* update tx power state */ + ath_update_txpow(sc); - if (sc->sc_beacons) + if (sc->sc_flags & SC_OP_BEACONS) ath_beacon_config(sc, ATH_IF_ID_ANY); /* restart beacons */ + ath9k_hw_set_interrupts(ah, sc->sc_imask); /* Restart the txq */ - if (flag & RESET_RETRY_TXQ) { + if (retry_tx) { int i; for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { if (ATH_TXQ_SETUP(sc, i)) { @@ -880,28 +762,6 @@ static int ath_reset_end(struct ath_softc *sc, u32 flag) } } } - return 0; -} - -int ath_reset(struct ath_softc *sc) -{ - struct ath_hal *ah = sc->sc_ah; - int status; - int error = 0; - enum ath9k_ht_macmode ht_macmode = ath_cwm_macmode(sc); - - /* NB: indicate channel change so we do a full reset */ - spin_lock_bh(&sc->sc_resetlock); - if (!ath9k_hw_reset(ah, sc->sc_opmode, &sc->sc_curchan, - ht_macmode, - sc->sc_tx_chainmask, sc->sc_rx_chainmask, - sc->sc_ht_extprotspacing, false, &status)) { - DPRINTF(sc, ATH_DBG_FATAL, - "%s: unable to reset hardware; hal status %u\n", - __func__, status); - error = -EIO; - } - spin_unlock_bh(&sc->sc_resetlock); return error; } @@ -911,7 +771,7 @@ int ath_suspend(struct ath_softc *sc) struct ath_hal *ah = sc->sc_ah; /* No I/O if device has been surprise removed */ - if (sc->sc_invalid) + if (sc->sc_flags & SC_OP_INVALID) return -EIO; /* Shut off the interrupt before setting sc->sc_invalid to '1' */ @@ -919,7 +779,7 @@ int ath_suspend(struct ath_softc *sc) /* XXX: we must make sure h/w will not generate any interrupt * before setting the invalid flag. */ - sc->sc_invalid = 1; + sc->sc_flags |= SC_OP_INVALID; /* disable HAL and put h/w to sleep */ ath9k_hw_disable(sc->sc_ah); @@ -940,7 +800,7 @@ irqreturn_t ath_isr(int irq, void *dev) bool sched = false; do { - if (sc->sc_invalid) { + if (sc->sc_flags & SC_OP_INVALID) { /* * The hardware is not ready/present, don't * touch anything. Note this can happen early @@ -1050,7 +910,7 @@ static void ath9k_tasklet(unsigned long data) if (status & ATH9K_INT_FATAL) { /* need a chip reset */ - ath_internal_reset(sc); + ath_reset(sc, false); return; } else { @@ -1093,10 +953,9 @@ int ath_init(u16 devid, struct ath_softc *sc) int status; int error = 0, i; int csz = 0; - u32 rd; /* XXX: hardware will not be ready until ath_open() being called */ - sc->sc_invalid = 1; + sc->sc_flags |= SC_OP_INVALID; sc->sc_debug = DBG_DEFAULT; DPRINTF(sc, ATH_DBG_CONFIG, "%s: devid 0x%x\n", __func__, devid); @@ -1126,9 +985,6 @@ int ath_init(u16 devid, struct ath_softc *sc) } sc->sc_ah = ah; - /* Get the chipset-specific aggr limit. */ - sc->sc_rtsaggrlimit = ah->ah_caps.rts_aggr_limit; - /* Get the hardware key cache size. */ sc->sc_keymax = ah->ah_caps.keycache_size; if (sc->sc_keymax > ATH_KEYMAX) { @@ -1162,14 +1018,12 @@ int ath_init(u16 devid, struct ath_softc *sc) * is resposible for filtering this list based on settings * like the phy mode. */ - rd = ah->ah_currentRD; - error = ath_setup_channels(sc); if (error) goto bad; /* default to STA mode */ - sc->sc_opmode = ATH9K_M_MONITOR; + sc->sc_ah->ah_opmode = ATH9K_M_MONITOR; /* Setup rate tables */ @@ -1240,7 +1094,7 @@ int ath_init(u16 devid, struct ath_softc *sc) sc->sc_rc = ath_rate_attach(ah); if (sc->sc_rc == NULL) { - error = EIO; + error = -EIO; goto bad2; } @@ -1280,20 +1134,13 @@ int ath_init(u16 devid, struct ath_softc *sc) /* 11n Capabilities */ if (ah->ah_caps.hw_caps & ATH9K_HW_CAP_HT) { - sc->sc_txaggr = 1; - sc->sc_rxaggr = 1; + sc->sc_flags |= SC_OP_TXAGGR; + sc->sc_flags |= SC_OP_RXAGGR; } sc->sc_tx_chainmask = ah->ah_caps.tx_chainmask; sc->sc_rx_chainmask = ah->ah_caps.rx_chainmask; - /* Configuration for rx chain detection */ - sc->sc_rxchaindetect_ref = 0; - sc->sc_rxchaindetect_thresh5GHz = 35; - sc->sc_rxchaindetect_thresh2GHz = 35; - sc->sc_rxchaindetect_delta5GHz = 30; - sc->sc_rxchaindetect_delta2GHz = 30; - ath9k_hw_setcapability(ah, ATH9K_CAP_DIVERSITY, 1, true, NULL); sc->sc_defant = ath9k_hw_getdefantenna(ah); @@ -1337,7 +1184,7 @@ void ath_deinit(struct ath_softc *sc) DPRINTF(sc, ATH_DBG_CONFIG, "%s\n", __func__); ath_stop(sc); - if (!sc->sc_invalid) + if (!(sc->sc_flags & SC_OP_INVALID)) ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); ath_rate_detach(sc->sc_rc); /* cleanup tx queues */ @@ -1464,9 +1311,9 @@ void ath_newassoc(struct ath_softc *sc, /* if station reassociates, tear down the aggregation state. */ if (!isnew) { for (tidno = 0; tidno < WME_NUM_TID; tidno++) { - if (sc->sc_txaggr) + if (sc->sc_flags & SC_OP_TXAGGR) ath_tx_aggr_teardown(sc, an, tidno); - if (sc->sc_rxaggr) + if (sc->sc_flags & SC_OP_RXAGGR) ath_rx_aggr_teardown(sc, an, tidno); } } @@ -1815,13 +1662,6 @@ void ath_descdma_cleanup(struct ath_softc *sc, /* Utilities */ /*************/ -void ath_internal_reset(struct ath_softc *sc) -{ - ath_reset_start(sc, 0); - ath_reset(sc); - ath_reset_end(sc, 0); -} - int ath_get_hal_qnum(u16 queue, struct ath_softc *sc) { int qnum; |