diff options
Diffstat (limited to 'drivers/net/wireless/ath9k')
| -rw-r--r-- | drivers/net/wireless/ath9k/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/ath9k/ath9k.h | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/ath9k/core.h | 33 | ||||
| -rw-r--r-- | drivers/net/wireless/ath9k/hw.c | 22 | ||||
| -rw-r--r-- | drivers/net/wireless/ath9k/main.c | 29 | ||||
| -rw-r--r-- | drivers/net/wireless/ath9k/rc.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/ath9k/regd_common.h | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/ath9k/xmit.c | 48 |
8 files changed, 97 insertions, 44 deletions
diff --git a/drivers/net/wireless/ath9k/Kconfig b/drivers/net/wireless/ath9k/Kconfig index c43bd321f97f..90a8dd873786 100644 --- a/drivers/net/wireless/ath9k/Kconfig +++ b/drivers/net/wireless/ath9k/Kconfig @@ -1,6 +1,7 @@ config ATH9K tristate "Atheros 802.11n wireless cards support" depends on PCI && MAC80211 && WLAN_80211 + depends on RFKILL || RFKILL=n select MAC80211_LEDS select LEDS_CLASS select NEW_LEDS diff --git a/drivers/net/wireless/ath9k/ath9k.h b/drivers/net/wireless/ath9k/ath9k.h index d27813502953..6650f609ece4 100644 --- a/drivers/net/wireless/ath9k/ath9k.h +++ b/drivers/net/wireless/ath9k/ath9k.h @@ -587,8 +587,8 @@ struct ath9k_country_entry { u8 iso[3]; }; -#define REG_WRITE(_ah, _reg, _val) iowrite32(_val, _ah->ah_sh + _reg) -#define REG_READ(_ah, _reg) ioread32(_ah->ah_sh + _reg) +#define REG_WRITE(_ah, _reg, _val) ath9k_iowrite32((_ah), (_reg), (_val)) +#define REG_READ(_ah, _reg) ath9k_ioread32((_ah), (_reg)) #define SM(_v, _f) (((_v) << _f##_S) & _f) #define MS(_v, _f) (((_v) & _f) >> _f##_S) diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h index 4ca2aed236e0..139566cbbf65 100644 --- a/drivers/net/wireless/ath9k/core.h +++ b/drivers/net/wireless/ath9k/core.h @@ -701,6 +701,7 @@ struct ath_softc { struct ath_hal *sc_ah; void __iomem *mem; spinlock_t sc_resetlock; + spinlock_t sc_serial_rw; struct mutex mutex; u8 sc_curbssid[ETH_ALEN]; @@ -751,4 +752,36 @@ int ath_get_hal_qnum(u16 queue, struct ath_softc *sc); int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc); int ath_cabq_update(struct ath_softc *); +/* + * Read and write, they both share the same lock. We do this to serialize + * reads and writes on Atheros 802.11n PCI devices only. This is required + * as the FIFO on these devices can only accept sanely 2 requests. After + * that the device goes bananas. Serializing the reads/writes prevents this + * from happening. + */ + +static inline void ath9k_iowrite32(struct ath_hal *ah, u32 reg_offset, u32 val) +{ + if (ah->ah_config.serialize_regmode == SER_REG_MODE_ON) { + unsigned long flags; + spin_lock_irqsave(&ah->ah_sc->sc_serial_rw, flags); + iowrite32(val, ah->ah_sc->mem + reg_offset); + spin_unlock_irqrestore(&ah->ah_sc->sc_serial_rw, flags); + } else + iowrite32(val, ah->ah_sc->mem + reg_offset); +} + +static inline unsigned int ath9k_ioread32(struct ath_hal *ah, u32 reg_offset) +{ + u32 val; + if (ah->ah_config.serialize_regmode == SER_REG_MODE_ON) { + unsigned long flags; + spin_lock_irqsave(&ah->ah_sc->sc_serial_rw, flags); + val = ioread32(ah->ah_sc->mem + reg_offset); + spin_unlock_irqrestore(&ah->ah_sc->sc_serial_rw, flags); + } else + val = ioread32(ah->ah_sc->mem + reg_offset); + return val; +} + #endif /* CORE_H */ diff --git a/drivers/net/wireless/ath9k/hw.c b/drivers/net/wireless/ath9k/hw.c index 34474edefc97..c38a00bbce64 100644 --- a/drivers/net/wireless/ath9k/hw.c +++ b/drivers/net/wireless/ath9k/hw.c @@ -437,6 +437,25 @@ static void ath9k_hw_set_defaults(struct ath_hal *ah) } ah->ah_config.intr_mitigation = 1; + + /* + * We need this for PCI devices only (Cardbus, PCI, miniPCI) + * _and_ if on non-uniprocessor systems (Multiprocessor/HT). + * This means we use it for all AR5416 devices, and the few + * minor PCI AR9280 devices out there. + * + * Serialization is required because these devices do not handle + * well the case of two concurrent reads/writes due to the latency + * involved. During one read/write another read/write can be issued + * on another CPU while the previous read/write may still be working + * on our hardware, if we hit this case the hardware poops in a loop. + * We prevent this by serializing reads and writes. + * + * This issue is not present on PCI-Express devices or pre-AR5416 + * devices (legacy, 802.11abg). + */ + if (num_possible_cpus() > 1) + ah->ah_config.serialize_regmode = SER_REG_MODE_AUTO; } static struct ath_hal_5416 *ath9k_hw_newstate(u16 devid, @@ -668,7 +687,8 @@ static struct ath_hal *ath9k_hw_do_attach(u16 devid, struct ath_softc *sc, } if (ah->ah_config.serialize_regmode == SER_REG_MODE_AUTO) { - if (ah->ah_macVersion == AR_SREV_VERSION_5416_PCI) { + if (ah->ah_macVersion == AR_SREV_VERSION_5416_PCI || + (AR_SREV_9280(ah) && !ah->ah_isPciExpress)) { ah->ah_config.serialize_regmode = SER_REG_MODE_ON; } else { diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c index 191eec50dc75..3c04044a60bd 100644 --- a/drivers/net/wireless/ath9k/main.c +++ b/drivers/net/wireless/ath9k/main.c @@ -1336,6 +1336,7 @@ static int ath_init(u16 devid, struct ath_softc *sc) printk(KERN_ERR "Unable to create debugfs files\n"); spin_lock_init(&sc->sc_resetlock); + spin_lock_init(&sc->sc_serial_rw); mutex_init(&sc->mutex); tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc); tasklet_init(&sc->bcon_tasklet, ath9k_beacon_tasklet, @@ -1538,6 +1539,7 @@ bad2: bad: if (ah) ath9k_hw_detach(ah); + ath9k_exit_debug(sc); return error; } @@ -1545,7 +1547,7 @@ bad: static int ath_attach(u16 devid, struct ath_softc *sc) { struct ieee80211_hw *hw = sc->hw; - int error = 0; + int error = 0, i; DPRINTF(sc, ATH_DBG_CONFIG, "Attach ATH hw\n"); @@ -1589,11 +1591,11 @@ static int ath_attach(u16 devid, struct ath_softc *sc) /* initialize tx/rx engine */ error = ath_tx_init(sc, ATH_TXBUF); if (error != 0) - goto detach; + goto error_attach; error = ath_rx_init(sc, ATH_RXBUF); if (error != 0) - goto detach; + goto error_attach; #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) /* Initialze h/w Rfkill */ @@ -1601,8 +1603,9 @@ static int ath_attach(u16 devid, struct ath_softc *sc) INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll); /* Initialize s/w rfkill */ - if (ath_init_sw_rfkill(sc)) - goto detach; + error = ath_init_sw_rfkill(sc); + if (error) + goto error_attach; #endif error = ieee80211_register_hw(hw); @@ -1611,8 +1614,16 @@ static int ath_attach(u16 devid, struct ath_softc *sc) ath_init_leds(sc); return 0; -detach: - ath_detach(sc); + +error_attach: + /* cleanup tx queues */ + for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) + if (ATH_TXQ_SETUP(sc, i)) + ath_tx_cleanupq(sc, &sc->tx.txq[i]); + + ath9k_hw_detach(sc->sc_ah); + ath9k_exit_debug(sc); + return error; } @@ -2164,13 +2175,13 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed) conf->ht.channel_type); } + ath_update_chainmask(sc, conf->ht.enabled); + if (ath_set_channel(sc, &sc->sc_ah->ah_channels[pos]) < 0) { DPRINTF(sc, ATH_DBG_FATAL, "Unable to set channel\n"); mutex_unlock(&sc->mutex); return -EINVAL; } - - ath_update_chainmask(sc, conf->ht.enabled); } if (changed & IEEE80211_CONF_CHANGE_POWER) diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c index 04ab457a8faa..1b71b934bb5e 100644 --- a/drivers/net/wireless/ath9k/rc.c +++ b/drivers/net/wireless/ath9k/rc.c @@ -490,7 +490,7 @@ static inline int ath_rc_get_nextvalid_txrate(struct ath_rate_table *rate_table, static int ath_rc_valid_phyrate(u32 phy, u32 capflag, int ignore_cw) { - if (WLAN_RC_PHY_HT(phy) & !(capflag & WLAN_RC_HT_FLAG)) + if (WLAN_RC_PHY_HT(phy) && !(capflag & WLAN_RC_HT_FLAG)) return 0; if (WLAN_RC_PHY_DS(phy) && !(capflag & WLAN_RC_DS_FLAG)) return 0; diff --git a/drivers/net/wireless/ath9k/regd_common.h b/drivers/net/wireless/ath9k/regd_common.h index 9112c030b1e8..6df1b3b77c25 100644 --- a/drivers/net/wireless/ath9k/regd_common.h +++ b/drivers/net/wireless/ath9k/regd_common.h @@ -228,7 +228,7 @@ enum { }; #define REG_DOMAIN_2GHZ_MASK (REQ_MASK & \ - (!(ADHOC_NO_11A | DISALLOW_ADHOC_11A | DISALLOW_ADHOC_11A_TURB))) + (~(ADHOC_NO_11A | DISALLOW_ADHOC_11A | DISALLOW_ADHOC_11A_TURB))) #define REG_DOMAIN_5GHZ_MASK REQ_MASK static struct reg_dmn_pair_mapping regDomainPairs[] = { diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c index 3bfc3b90f256..c92f0c6e4adc 100644 --- a/drivers/net/wireless/ath9k/xmit.c +++ b/drivers/net/wireless/ath9k/xmit.c @@ -126,15 +126,7 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb, tx_info->flags |= IEEE80211_TX_STAT_ACK; } - tx_info->status.rates[0].count = tx_status->retries; - if (tx_info->status.rates[0].flags & IEEE80211_TX_RC_MCS) { - /* Change idx from internal table index to MCS index */ - int idx = tx_info->status.rates[0].idx; - struct ath_rate_table *rate_table = sc->cur_rate_table; - if (idx >= 0 && idx < rate_table->rate_cnt) - tx_info->status.rates[0].idx = - rate_table->info[idx].ratecode & 0x7f; - } + tx_info->status.rates[0].count = tx_status->retries + 1; hdrlen = ieee80211_get_hdrlen_from_skb(skb); padsize = hdrlen & 3; @@ -264,25 +256,22 @@ static void assign_aggr_tid_seqno(struct sk_buff *skb, } /* Get seqno */ - - if (ieee80211_is_data(fc) && !is_pae(skb)) { - /* For HT capable stations, we save tidno for later use. - * We also override seqno set by upper layer with the one - * in tx aggregation state. - * - * If fragmentation is on, the sequence number is - * not overridden, since it has been - * incremented by the fragmentation routine. - * - * FIXME: check if the fragmentation threshold exceeds - * IEEE80211 max. - */ - tid = ATH_AN_2_TID(an, bf->bf_tidno); - hdr->seq_ctrl = cpu_to_le16(tid->seq_next << - IEEE80211_SEQ_SEQ_SHIFT); - bf->bf_seqno = tid->seq_next; - INCR(tid->seq_next, IEEE80211_SEQ_MAX); - } + /* For HT capable stations, we save tidno for later use. + * We also override seqno set by upper layer with the one + * in tx aggregation state. + * + * If fragmentation is on, the sequence number is + * not overridden, since it has been + * incremented by the fragmentation routine. + * + * FIXME: check if the fragmentation threshold exceeds + * IEEE80211 max. + */ + tid = ATH_AN_2_TID(an, bf->bf_tidno); + hdr->seq_ctrl = cpu_to_le16(tid->seq_next << + IEEE80211_SEQ_SEQ_SHIFT); + bf->bf_seqno = tid->seq_next; + INCR(tid->seq_next, IEEE80211_SEQ_MAX); } static int setup_tx_flags(struct ath_softc *sc, struct sk_buff *skb, @@ -1718,11 +1707,10 @@ static int ath_tx_setup_buffer(struct ath_softc *sc, struct ath_buf *bf, /* Assign seqno, tidno */ - if (bf_isht(bf) && (sc->sc_flags & SC_OP_TXAGGR)) + if (ieee80211_is_data_qos(fc) && (sc->sc_flags & SC_OP_TXAGGR)) assign_aggr_tid_seqno(skb, bf); /* DMA setup */ - bf->bf_mpdu = skb; bf->bf_dmacontext = pci_map_single(sc->pdev, skb->data, |