diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/base.c')
-rw-r--r-- | drivers/net/wireless/ath/ath5k/base.c | 753 |
1 files changed, 274 insertions, 479 deletions
diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c index 7f783d9462a..0a7071a6dd7 100644 --- a/drivers/net/wireless/ath/ath5k/base.c +++ b/drivers/net/wireless/ath/ath5k/base.c @@ -47,8 +47,6 @@ #include <linux/io.h> #include <linux/netdevice.h> #include <linux/cache.h> -#include <linux/pci.h> -#include <linux/pci-aspm.h> #include <linux/ethtool.h> #include <linux/uaccess.h> #include <linux/slab.h> @@ -80,37 +78,24 @@ MODULE_SUPPORTED_DEVICE("Atheros 5xxx WLAN cards"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_VERSION("0.6.0 (EXPERIMENTAL)"); -static int ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan); +static int ath5k_init(struct ieee80211_hw *hw); +static int ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan, + bool skip_pcu); static int ath5k_beacon_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif); static void ath5k_beacon_update_timers(struct ath5k_softc *sc, u64 bc_tsf); -/* Known PCI ids */ -static DEFINE_PCI_DEVICE_TABLE(ath5k_pci_id_table) = { - { PCI_VDEVICE(ATHEROS, 0x0207) }, /* 5210 early */ - { PCI_VDEVICE(ATHEROS, 0x0007) }, /* 5210 */ - { PCI_VDEVICE(ATHEROS, 0x0011) }, /* 5311 - this is on AHB bus !*/ - { PCI_VDEVICE(ATHEROS, 0x0012) }, /* 5211 */ - { PCI_VDEVICE(ATHEROS, 0x0013) }, /* 5212 */ - { PCI_VDEVICE(3COM_2, 0x0013) }, /* 3com 5212 */ - { PCI_VDEVICE(3COM, 0x0013) }, /* 3com 3CRDAG675 5212 */ - { PCI_VDEVICE(ATHEROS, 0x1014) }, /* IBM minipci 5212 */ - { PCI_VDEVICE(ATHEROS, 0x0014) }, /* 5212 combatible */ - { PCI_VDEVICE(ATHEROS, 0x0015) }, /* 5212 combatible */ - { PCI_VDEVICE(ATHEROS, 0x0016) }, /* 5212 combatible */ - { PCI_VDEVICE(ATHEROS, 0x0017) }, /* 5212 combatible */ - { PCI_VDEVICE(ATHEROS, 0x0018) }, /* 5212 combatible */ - { PCI_VDEVICE(ATHEROS, 0x0019) }, /* 5212 combatible */ - { PCI_VDEVICE(ATHEROS, 0x001a) }, /* 2413 Griffin-lite */ - { PCI_VDEVICE(ATHEROS, 0x001b) }, /* 5413 Eagle */ - { PCI_VDEVICE(ATHEROS, 0x001c) }, /* PCI-E cards */ - { PCI_VDEVICE(ATHEROS, 0x001d) }, /* 2417 Nala */ - { 0 } -}; -MODULE_DEVICE_TABLE(pci, ath5k_pci_id_table); - /* Known SREVs */ static const struct ath5k_srev_name srev_names[] = { +#ifdef CONFIG_ATHEROS_AR231X + { "5312", AR5K_VERSION_MAC, AR5K_SREV_AR5312_R2 }, + { "5312", AR5K_VERSION_MAC, AR5K_SREV_AR5312_R7 }, + { "2313", AR5K_VERSION_MAC, AR5K_SREV_AR2313_R8 }, + { "2315", AR5K_VERSION_MAC, AR5K_SREV_AR2315_R6 }, + { "2315", AR5K_VERSION_MAC, AR5K_SREV_AR2315_R7 }, + { "2317", AR5K_VERSION_MAC, AR5K_SREV_AR2317_R1 }, + { "2317", AR5K_VERSION_MAC, AR5K_SREV_AR2317_R2 }, +#else { "5210", AR5K_VERSION_MAC, AR5K_SREV_AR5210 }, { "5311", AR5K_VERSION_MAC, AR5K_SREV_AR5311 }, { "5311A", AR5K_VERSION_MAC, AR5K_SREV_AR5311A }, @@ -129,6 +114,7 @@ static const struct ath5k_srev_name srev_names[] = { { "5418", AR5K_VERSION_MAC, AR5K_SREV_AR5418 }, { "2425", AR5K_VERSION_MAC, AR5K_SREV_AR2425 }, { "2417", AR5K_VERSION_MAC, AR5K_SREV_AR2417 }, +#endif { "xxxxx", AR5K_VERSION_MAC, AR5K_SREV_UNKNOWN }, { "5110", AR5K_VERSION_RAD, AR5K_SREV_RAD_5110 }, { "5111", AR5K_VERSION_RAD, AR5K_SREV_RAD_5111 }, @@ -142,10 +128,12 @@ static const struct ath5k_srev_name srev_names[] = { { "2112B", AR5K_VERSION_RAD, AR5K_SREV_RAD_2112B }, { "2413", AR5K_VERSION_RAD, AR5K_SREV_RAD_2413 }, { "5413", AR5K_VERSION_RAD, AR5K_SREV_RAD_5413 }, - { "2316", AR5K_VERSION_RAD, AR5K_SREV_RAD_2316 }, - { "2317", AR5K_VERSION_RAD, AR5K_SREV_RAD_2317 }, { "5424", AR5K_VERSION_RAD, AR5K_SREV_RAD_5424 }, { "5133", AR5K_VERSION_RAD, AR5K_SREV_RAD_5133 }, +#ifdef CONFIG_ATHEROS_AR231X + { "2316", AR5K_VERSION_RAD, AR5K_SREV_RAD_2316 }, + { "2317", AR5K_VERSION_RAD, AR5K_SREV_RAD_2317 }, +#endif { "xxxxx", AR5K_VERSION_RAD, AR5K_SREV_UNKNOWN }, }; @@ -197,8 +185,8 @@ static inline void ath5k_txbuf_free_skb(struct ath5k_softc *sc, BUG_ON(!bf); if (!bf->skb) return; - pci_unmap_single(sc->pdev, bf->skbaddr, bf->skb->len, - PCI_DMA_TODEVICE); + dma_unmap_single(sc->dev, bf->skbaddr, bf->skb->len, + DMA_TO_DEVICE); dev_kfree_skb_any(bf->skb); bf->skb = NULL; bf->skbaddr = 0; @@ -214,8 +202,8 @@ static inline void ath5k_rxbuf_free_skb(struct ath5k_softc *sc, BUG_ON(!bf); if (!bf->skb) return; - pci_unmap_single(sc->pdev, bf->skbaddr, common->rx_bufsize, - PCI_DMA_FROMDEVICE); + dma_unmap_single(sc->dev, bf->skbaddr, common->rx_bufsize, + DMA_FROM_DEVICE); dev_kfree_skb_any(bf->skb); bf->skb = NULL; bf->skbaddr = 0; @@ -233,7 +221,7 @@ static inline u64 ath5k_extend_tsf(struct ath5k_hw *ah, u32 rstamp) return (tsf & ~0x7fff) | rstamp; } -static const char * +const char * ath5k_chip_name(enum ath5k_srev_type type, u_int16_t val) { const char *name = "xxxxx"; @@ -327,14 +315,12 @@ ath5k_copy_channels(struct ath5k_hw *ah, switch (mode) { case AR5K_MODE_11A: - case AR5K_MODE_11A_TURBO: /* 1..220, but 2GHz frequencies are filtered by check_channel */ size = 220 ; chfreq = CHANNEL_5GHZ; break; case AR5K_MODE_11B: case AR5K_MODE_11G: - case AR5K_MODE_11G_TURBO: size = 26; chfreq = CHANNEL_2GHZ; break; @@ -363,11 +349,6 @@ ath5k_copy_channels(struct ath5k_hw *ah, case AR5K_MODE_11G: channels[count].hw_value = chfreq | CHANNEL_OFDM; break; - case AR5K_MODE_11A_TURBO: - case AR5K_MODE_11G_TURBO: - channels[count].hw_value = chfreq | - CHANNEL_OFDM | CHANNEL_TURBO; - break; case AR5K_MODE_11B: channels[count].hw_value = CHANNEL_B; } @@ -496,7 +477,7 @@ ath5k_chan_set(struct ath5k_softc *sc, struct ieee80211_channel *chan) * hardware at the new frequency, and then re-enable * the relevant bits of the h/w. */ - return ath5k_reset(sc, chan); + return ath5k_reset(sc, chan, true); } static void @@ -653,10 +634,11 @@ struct sk_buff *ath5k_rx_skb_alloc(struct ath5k_softc *sc, dma_addr_t *skb_addr) return NULL; } - *skb_addr = pci_map_single(sc->pdev, + *skb_addr = dma_map_single(sc->dev, skb->data, common->rx_bufsize, - PCI_DMA_FROMDEVICE); - if (unlikely(pci_dma_mapping_error(sc->pdev, *skb_addr))) { + DMA_FROM_DEVICE); + + if (unlikely(dma_mapping_error(sc->dev, *skb_addr))) { ATH5K_ERR(sc, "%s: DMA mapping failed\n", __func__); dev_kfree_skb(skb); return NULL; @@ -752,8 +734,8 @@ ath5k_txbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf, flags = AR5K_TXDESC_INTREQ | AR5K_TXDESC_CLRDMASK; /* XXX endianness */ - bf->skbaddr = pci_map_single(sc->pdev, skb->data, skb->len, - PCI_DMA_TODEVICE); + bf->skbaddr = dma_map_single(sc->dev, skb->data, skb->len, + DMA_TO_DEVICE); rate = ieee80211_get_tx_rate(sc->hw, info); if (!rate) { @@ -833,7 +815,7 @@ ath5k_txbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf, return 0; err_unmap: - pci_unmap_single(sc->pdev, bf->skbaddr, skb->len, PCI_DMA_TODEVICE); + dma_unmap_single(sc->dev, bf->skbaddr, skb->len, DMA_TO_DEVICE); return ret; } @@ -842,7 +824,7 @@ err_unmap: \*******************/ static int -ath5k_desc_alloc(struct ath5k_softc *sc, struct pci_dev *pdev) +ath5k_desc_alloc(struct ath5k_softc *sc) { struct ath5k_desc *ds; struct ath5k_buf *bf; @@ -853,7 +835,9 @@ ath5k_desc_alloc(struct ath5k_softc *sc, struct pci_dev *pdev) /* allocate descriptors */ sc->desc_len = sizeof(struct ath5k_desc) * (ATH_TXBUF + ATH_RXBUF + ATH_BCBUF + 1); - sc->desc = pci_alloc_consistent(pdev, sc->desc_len, &sc->desc_daddr); + + sc->desc = dma_alloc_coherent(sc->dev, sc->desc_len, + &sc->desc_daddr, GFP_KERNEL); if (sc->desc == NULL) { ATH5K_ERR(sc, "can't allocate descriptors\n"); ret = -ENOMEM; @@ -899,14 +883,14 @@ ath5k_desc_alloc(struct ath5k_softc *sc, struct pci_dev *pdev) return 0; err_free: - pci_free_consistent(pdev, sc->desc_len, sc->desc, sc->desc_daddr); + dma_free_coherent(sc->dev, sc->desc_len, sc->desc, sc->desc_daddr); err: sc->desc = NULL; return ret; } static void -ath5k_desc_free(struct ath5k_softc *sc, struct pci_dev *pdev) +ath5k_desc_free(struct ath5k_softc *sc) { struct ath5k_buf *bf; @@ -918,7 +902,7 @@ ath5k_desc_free(struct ath5k_softc *sc, struct pci_dev *pdev) ath5k_txbuf_free_skb(sc, bf); /* Free memory associated with all descriptors */ - pci_free_consistent(pdev, sc->desc_len, sc->desc, sc->desc_daddr); + dma_free_coherent(sc->dev, sc->desc_len, sc->desc, sc->desc_daddr); sc->desc = NULL; sc->desc_daddr = 0; @@ -1063,62 +1047,44 @@ err: return ret; } +/** + * ath5k_drain_tx_buffs - Empty tx buffers + * + * @sc The &struct ath5k_softc + * + * Empty tx buffers from all queues in preparation + * of a reset or during shutdown. + * + * NB: this assumes output has been stopped and + * we do not need to block ath5k_tx_tasklet + */ static void -ath5k_txq_drainq(struct ath5k_softc *sc, struct ath5k_txq *txq) +ath5k_drain_tx_buffs(struct ath5k_softc *sc) { + struct ath5k_txq *txq; struct ath5k_buf *bf, *bf0; + int i; - /* - * NB: this assumes output has been stopped and - * we do not need to block ath5k_tx_tasklet - */ - spin_lock_bh(&txq->lock); - list_for_each_entry_safe(bf, bf0, &txq->q, list) { - ath5k_debug_printtxbuf(sc, bf); - - ath5k_txbuf_free_skb(sc, bf); - - spin_lock_bh(&sc->txbuflock); - list_move_tail(&bf->list, &sc->txbuf); - sc->txbuf_len++; - txq->txq_len--; - spin_unlock_bh(&sc->txbuflock); - } - txq->link = NULL; - txq->txq_poll_mark = false; - spin_unlock_bh(&txq->lock); -} + for (i = 0; i < ARRAY_SIZE(sc->txqs); i++) { + if (sc->txqs[i].setup) { + txq = &sc->txqs[i]; + spin_lock_bh(&txq->lock); + list_for_each_entry_safe(bf, bf0, &txq->q, list) { + ath5k_debug_printtxbuf(sc, bf); -/* - * Drain the transmit queues and reclaim resources. - */ -static void -ath5k_txq_cleanup(struct ath5k_softc *sc) -{ - struct ath5k_hw *ah = sc->ah; - unsigned int i; + ath5k_txbuf_free_skb(sc, bf); - /* XXX return value */ - if (likely(!test_bit(ATH_STAT_INVALID, sc->status))) { - /* don't touch the hardware if marked invalid */ - ath5k_hw_stop_tx_dma(ah, sc->bhalq); - ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "beacon queue %x\n", - ath5k_hw_get_txdp(ah, sc->bhalq)); - for (i = 0; i < ARRAY_SIZE(sc->txqs); i++) - if (sc->txqs[i].setup) { - ath5k_hw_stop_tx_dma(ah, sc->txqs[i].qnum); - ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "txq [%u] %x, " - "link %p\n", - sc->txqs[i].qnum, - ath5k_hw_get_txdp(ah, - sc->txqs[i].qnum), - sc->txqs[i].link); + spin_lock_bh(&sc->txbuflock); + list_move_tail(&bf->list, &sc->txbuf); + sc->txbuf_len++; + txq->txq_len--; + spin_unlock_bh(&sc->txbuflock); } + txq->link = NULL; + txq->txq_poll_mark = false; + spin_unlock_bh(&txq->lock); + } } - - for (i = 0; i < ARRAY_SIZE(sc->txqs); i++) - if (sc->txqs[i].setup) - ath5k_txq_drainq(sc, &sc->txqs[i]); } static void @@ -1178,16 +1144,19 @@ err: } /* - * Disable the receive h/w in preparation for a reset. + * Disable the receive logic on PCU (DRU) + * In preparation for a shutdown. + * + * Note: Doesn't stop rx DMA, ath5k_hw_dma_stop + * does. */ static void ath5k_rx_stop(struct ath5k_softc *sc) { struct ath5k_hw *ah = sc->ah; - ath5k_hw_stop_rx_pcu(ah); /* disable PCU */ ath5k_hw_set_rx_filter(ah, 0); /* clear recv filter */ - ath5k_hw_stop_rx_dma(ah); /* disable DMA engine */ + ath5k_hw_stop_rx_pcu(ah); /* disable PCU */ ath5k_debug_printrxbuffs(sc, ah); } @@ -1544,9 +1513,9 @@ ath5k_tasklet_rx(unsigned long data) if (!next_skb) goto next; - pci_unmap_single(sc->pdev, bf->skbaddr, + dma_unmap_single(sc->dev, bf->skbaddr, common->rx_bufsize, - PCI_DMA_FROMDEVICE); + DMA_FROM_DEVICE); skb_put(skb, rs.rs_datalen); @@ -1709,8 +1678,9 @@ ath5k_tx_processq(struct ath5k_softc *sc, struct ath5k_txq *txq) skb = bf->skb; bf->skb = NULL; - pci_unmap_single(sc->pdev, bf->skbaddr, skb->len, - PCI_DMA_TODEVICE); + + dma_unmap_single(sc->dev, bf->skbaddr, skb->len, + DMA_TO_DEVICE); ath5k_tx_frame_completed(sc, skb, &ts); } @@ -1764,12 +1734,13 @@ ath5k_beacon_setup(struct ath5k_softc *sc, struct ath5k_buf *bf) u32 flags; const int padsize = 0; - bf->skbaddr = pci_map_single(sc->pdev, skb->data, skb->len, - PCI_DMA_TODEVICE); + bf->skbaddr = dma_map_single(sc->dev, skb->data, skb->len, + DMA_TO_DEVICE); ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, "skb %p [data %p len %u] " "skbaddr %llx\n", skb, skb->data, skb->len, (unsigned long long)bf->skbaddr); - if (pci_dma_mapping_error(sc->pdev, bf->skbaddr)) { + + if (dma_mapping_error(sc->dev, bf->skbaddr)) { ATH5K_ERR(sc, "beacon DMA mapping failed\n"); return -EIO; } @@ -1821,7 +1792,7 @@ ath5k_beacon_setup(struct ath5k_softc *sc, struct ath5k_buf *bf) return 0; err_unmap: - pci_unmap_single(sc->pdev, bf->skbaddr, skb->len, PCI_DMA_TODEVICE); + dma_unmap_single(sc->dev, bf->skbaddr, skb->len, DMA_TO_DEVICE); return ret; } @@ -1937,7 +1908,7 @@ ath5k_beacon_send(struct ath5k_softc *sc) * This should never fail since we check above that no frames * are still pending on the queue. */ - if (unlikely(ath5k_hw_stop_tx_dma(ah, sc->bhalq))) { + if (unlikely(ath5k_hw_stop_beacon_queue(ah, sc->bhalq))) { ATH5K_WARN(sc, "beacon queue %u didn't start/stop ?\n", sc->bhalq); /* NB: hw still stops DMA, so proceed */ } @@ -2106,7 +2077,7 @@ ath5k_beacon_config(struct ath5k_softc *sc) } else ath5k_beacon_update_timers(sc, -1); } else { - ath5k_hw_stop_tx_dma(sc->ah, sc->bhalq); + ath5k_hw_stop_beacon_queue(sc->ah, sc->bhalq); } ath5k_hw_set_imr(ah, sc->imask); @@ -2168,7 +2139,7 @@ ath5k_intr_calibration_poll(struct ath5k_hw *ah) * AR5K_REG_ENABLE_BITS(ah, AR5K_CR, AR5K_CR_SWI); */ } -static irqreturn_t +irqreturn_t ath5k_intr(int irq, void *dev_id) { struct ath5k_softc *sc = dev_id; @@ -2177,7 +2148,8 @@ ath5k_intr(int irq, void *dev_id) unsigned int counter = 1000; if (unlikely(test_bit(ATH_STAT_INVALID, sc->status) || - !ath5k_hw_is_intr_pending(ah))) + ((ath5k_get_bus_type(ah) != ATH_AHB) && + !ath5k_hw_is_intr_pending(ah)))) return IRQ_NONE; do { @@ -2243,6 +2215,10 @@ ath5k_intr(int irq, void *dev_id) tasklet_schedule(&sc->rf_kill.toggleq); } + + if (ath5k_get_bus_type(ah) == ATH_AHB) + break; + } while (ath5k_hw_is_intr_pending(ah) && --counter > 0); if (unlikely(!counter)) @@ -2342,7 +2318,7 @@ ath5k_tx_complete_poll_work(struct work_struct *work) if (needreset) { ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "TX queues stuck, resetting\n"); - ath5k_reset(sc, sc->curchan); + ath5k_reset(sc, NULL, true); } ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, @@ -2354,6 +2330,158 @@ ath5k_tx_complete_poll_work(struct work_struct *work) * Initialization routines * \*************************/ +int +ath5k_init_softc(struct ath5k_softc *sc, const struct ath_bus_ops *bus_ops) +{ + struct ieee80211_hw *hw = sc->hw; + struct ath_common *common; + int ret; + int csz; + + /* Initialize driver private data */ + SET_IEEE80211_DEV(hw, sc->dev); + hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | + IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | + IEEE80211_HW_SIGNAL_DBM; + + hw->wiphy->interface_modes = + BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_ADHOC) | + BIT(NL80211_IFTYPE_MESH_POINT); + + hw->extra_tx_headroom = 2; + hw->channel_change_time = 5000; + + /* + * Mark the device as detached to avoid processing + * interrupts until setup is complete. + */ + __set_bit(ATH_STAT_INVALID, sc->status); + + sc->opmode = NL80211_IFTYPE_STATION; + sc->bintval = 1000; + mutex_init(&sc->lock); + spin_lock_init(&sc->rxbuflock); + spin_lock_init(&sc->txbuflock); + spin_lock_init(&sc->block); + + + /* Setup interrupt handler */ + ret = request_irq(sc->irq, ath5k_intr, IRQF_SHARED, "ath", sc); + if (ret) { + ATH5K_ERR(sc, "request_irq failed\n"); + goto err; + } + + /* If we passed the test, malloc an ath5k_hw struct */ + sc->ah = kzalloc(sizeof(struct ath5k_hw), GFP_KERNEL); + if (!sc->ah) { + ret = -ENOMEM; + ATH5K_ERR(sc, "out of memory\n"); + goto err_irq; + } + + sc->ah->ah_sc = sc; + sc->ah->ah_iobase = sc->iobase; + common = ath5k_hw_common(sc->ah); + common->ops = &ath5k_common_ops; + common->bus_ops = bus_ops; + common->ah = sc->ah; + common->hw = hw; + common->priv = sc; + + /* + * Cache line size is used to size and align various + * structures used to communicate with the hardware. + */ + ath5k_read_cachesize(common, &csz); + common->cachelsz = csz << 2; /* convert to bytes */ + + spin_lock_init(&common->cc_lock); + + /* Initialize device */ + ret = ath5k_hw_init(sc); + if (ret) + goto err_free_ah; + + /* set up multi-rate retry capabilities */ + if (sc->ah->ah_version == AR5K_AR5212) { + hw->max_rates = 4; + hw->max_rate_tries = 11; + } + + hw->vif_data_size = sizeof(struct ath5k_vif); + + /* Finish private driver data initialization */ + ret = ath5k_init(hw); + if (ret) + goto err_ah; + + ATH5K_INFO(sc, "Atheros AR%s chip found (MAC: 0x%x, PHY: 0x%x)\n", + ath5k_chip_name(AR5K_VERSION_MAC, sc->ah->ah_mac_srev), + sc->ah->ah_mac_srev, + sc->ah->ah_phy_revision); + + if (!sc->ah->ah_single_chip) { + /* Single chip radio (!RF5111) */ + if (sc->ah->ah_radio_5ghz_revision && + !sc->ah->ah_radio_2ghz_revision) { + /* No 5GHz support -> report 2GHz radio */ + if (!test_bit(AR5K_MODE_11A, + sc->ah->ah_capabilities.cap_mode)) { + ATH5K_INFO(sc, "RF%s 2GHz radio found (0x%x)\n", + ath5k_chip_name(AR5K_VERSION_RAD, + sc->ah->ah_radio_5ghz_revision), + sc->ah->ah_radio_5ghz_revision); + /* No 2GHz support (5110 and some + * 5Ghz only cards) -> report 5Ghz radio */ + } else if (!test_bit(AR5K_MODE_11B, + sc->ah->ah_capabilities.cap_mode)) { + ATH5K_INFO(sc, "RF%s 5GHz radio found (0x%x)\n", + ath5k_chip_name(AR5K_VERSION_RAD, + sc->ah->ah_radio_5ghz_revision), + sc->ah->ah_radio_5ghz_revision); + /* Multiband radio */ + } else { + ATH5K_INFO(sc, "RF%s multiband radio found" + " (0x%x)\n", + ath5k_chip_name(AR5K_VERSION_RAD, + sc->ah->ah_radio_5ghz_revision), + sc->ah->ah_radio_5ghz_revision); + } + } + /* Multi chip radio (RF5111 - RF2111) -> + * report both 2GHz/5GHz radios */ + else if (sc->ah->ah_radio_5ghz_revision && + sc->ah->ah_radio_2ghz_revision){ + ATH5K_INFO(sc, "RF%s 5GHz radio found (0x%x)\n", + ath5k_chip_name(AR5K_VERSION_RAD, + sc->ah->ah_radio_5ghz_revision), + sc->ah->ah_radio_5ghz_revision); + ATH5K_INFO(sc, "RF%s 2GHz radio found (0x%x)\n", + ath5k_chip_name(AR5K_VERSION_RAD, + sc->ah->ah_radio_2ghz_revision), + sc->ah->ah_radio_2ghz_revision); + } + } + + ath5k_debug_init_device(sc); + + /* ready to process interrupts */ + __clear_bit(ATH_STAT_INVALID, sc->status); + + return 0; +err_ah: + ath5k_hw_deinit(sc->ah); +err_free_ah: + kfree(sc->ah); +err_irq: + free_irq(sc->irq, sc); +err: + return ret; +} + static int ath5k_stop_locked(struct ath5k_softc *sc) { @@ -2382,11 +2510,10 @@ ath5k_stop_locked(struct ath5k_softc *sc) if (!test_bit(ATH_STAT_INVALID, sc->status)) { ath5k_led_off(sc); ath5k_hw_set_imr(ah, 0); - synchronize_irq(sc->pdev->irq); - } - ath5k_txq_cleanup(sc); - if (!test_bit(ATH_STAT_INVALID, sc->status)) { + synchronize_irq(sc->irq); ath5k_rx_stop(sc); + ath5k_hw_dma_stop(ah); + ath5k_drain_tx_buffs(sc); ath5k_hw_phy_disable(ah); } @@ -2394,7 +2521,7 @@ ath5k_stop_locked(struct ath5k_softc *sc) } static int -ath5k_init(struct ath5k_softc *sc) +ath5k_init_hw(struct ath5k_softc *sc) { struct ath5k_hw *ah = sc->ah; struct ath_common *common = ath5k_hw_common(ah); @@ -2423,7 +2550,7 @@ ath5k_init(struct ath5k_softc *sc) AR5K_INT_RXORN | AR5K_INT_TXDESC | AR5K_INT_TXEOL | AR5K_INT_FATAL | AR5K_INT_GLOBAL | AR5K_INT_MIB; - ret = ath5k_reset(sc, NULL); + ret = ath5k_reset(sc, NULL, false); if (ret) goto done; @@ -2436,7 +2563,9 @@ ath5k_init(struct ath5k_softc *sc) for (i = 0; i < common->keymax; i++) ath_hw_keyreset(common, (u16) i); - ath5k_hw_set_ack_bitrate_high(ah, true); + /* Use higher rates for acks instead of base + * rate */ + ah->ah_ack_bitrate_high = true; for (i = 0; i < ARRAY_SIZE(sc->bslot); i++) sc->bslot[i] = NULL; @@ -2520,7 +2649,8 @@ ath5k_stop_hw(struct ath5k_softc *sc) * This should be called with sc->lock. */ static int -ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan) +ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan, + bool skip_pcu) { struct ath5k_hw *ah = sc->ah; int ret; @@ -2528,17 +2658,17 @@ ath5k_reset(struct ath5k_softc *sc, struct ieee80211_channel *chan) ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "resetting\n"); ath5k_hw_set_imr(ah, 0); - synchronize_irq(sc->pdev->irq); + synchronize_irq(sc->irq); stop_tasklets(sc); if (chan) { - ath5k_txq_cleanup(sc); - ath5k_rx_stop(sc); + ath5k_drain_tx_buffs(sc); sc->curchan = chan; sc->curband = &sc->sbands[chan->band]; } - ret = ath5k_hw_reset(ah, sc->opmode, sc->curchan, chan != NULL); + ret = ath5k_hw_reset(ah, sc->opmode, sc->curchan, chan != NULL, + skip_pcu); if (ret) { ATH5K_ERR(sc, "can't reset hardware (%d)\n", ret); goto err; @@ -2584,13 +2714,14 @@ static void ath5k_reset_work(struct work_struct *work) reset_work); mutex_lock(&sc->lock); - ath5k_reset(sc, sc->curchan); + ath5k_reset(sc, NULL, true); mutex_unlock(&sc->lock); } static int -ath5k_attach(struct pci_dev *pdev, struct ieee80211_hw *hw) +ath5k_init(struct ieee80211_hw *hw) { + struct ath5k_softc *sc = hw->priv; struct ath5k_hw *ah = sc->ah; struct ath_regulatory *regulatory = ath5k_hw_regulatory(ah); @@ -2598,7 +2729,6 @@ ath5k_attach(struct pci_dev *pdev, struct ieee80211_hw *hw) u8 mac[ETH_ALEN] = {}; int ret; - ATH5K_DBG(sc, ATH5K_DEBUG_ANY, "devid 0x%x\n", pdev->device); /* * Check if the MAC has multi-rate retry support. @@ -2635,7 +2765,7 @@ ath5k_attach(struct pci_dev *pdev, struct ieee80211_hw *hw) /* * Allocate tx+rx descriptors and populate the lists. */ - ret = ath5k_desc_alloc(sc, pdev); + ret = ath5k_desc_alloc(sc); if (ret) { ATH5K_ERR(sc, "can't allocate descriptors\n"); goto err; @@ -2699,8 +2829,7 @@ ath5k_attach(struct pci_dev *pdev, struct ieee80211_hw *hw) ret = ath5k_eeprom_read_mac(ah, mac); if (ret) { - ATH5K_ERR(sc, "unable to read address from EEPROM: 0x%04x\n", - sc->pdev->device); + ATH5K_ERR(sc, "unable to read address from EEPROM\n"); goto err_queues; } @@ -2735,15 +2864,15 @@ err_queues: err_bhal: ath5k_hw_release_tx_queue(ah, sc->bhalq); err_desc: - ath5k_desc_free(sc, pdev); + ath5k_desc_free(sc); err: return ret; } -static void -ath5k_detach(struct pci_dev *pdev, struct ieee80211_hw *hw) +void +ath5k_deinit_softc(struct ath5k_softc *sc) { - struct ath5k_softc *sc = hw->priv; + struct ieee80211_hw *hw = sc->hw; /* * NB: the order of these is important: @@ -2758,8 +2887,9 @@ ath5k_detach(struct pci_dev *pdev, struct ieee80211_hw *hw) * XXX: ??? detach ath5k_hw ??? * Other than that, it's straightforward... */ + ath5k_debug_finish_device(sc); ieee80211_unregister_hw(hw); - ath5k_desc_free(sc, pdev); + ath5k_desc_free(sc); ath5k_txq_release(sc); ath5k_hw_release_tx_queue(sc->ah, sc->bhalq); ath5k_unregister_leds(sc); @@ -2770,6 +2900,8 @@ ath5k_detach(struct pci_dev *pdev, struct ieee80211_hw *hw) * returns because we'll get called back to reclaim node * state and potentially want to use them. */ + ath5k_hw_deinit(sc->ah); + free_irq(sc->irq, sc); } /********************\ @@ -2792,7 +2924,7 @@ ath5k_tx(struct ieee80211_hw *hw, struct sk_buff *skb) static int ath5k_start(struct ieee80211_hw *hw) { - return ath5k_init(hw->priv); + return ath5k_init_hw(hw->priv); } static void ath5k_stop(struct ieee80211_hw *hw) @@ -3437,7 +3569,7 @@ static int ath5k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) return 0; } -static const struct ieee80211_ops ath5k_hw_ops = { +const struct ieee80211_ops ath5k_hw_ops = { .tx = ath5k_tx, .start = ath5k_start, .stop = ath5k_stop, @@ -3460,340 +3592,3 @@ static const struct ieee80211_ops ath5k_hw_ops = { .set_antenna = ath5k_set_antenna, .get_antenna = ath5k_get_antenna, }; - -/********************\ -* PCI Initialization * -\********************/ - -static int __devinit -ath5k_pci_probe(struct pci_dev *pdev, - const struct pci_device_id *id) -{ - void __iomem *mem; - struct ath5k_softc *sc; - struct ath_common *common; - struct ieee80211_hw *hw; - int ret; - u8 csz; - - /* - * L0s needs to be disabled on all ath5k cards. - * - * For distributions shipping with CONFIG_PCIEASPM (this will be enabled - * by default in the future in 2.6.36) this will also mean both L1 and - * L0s will be disabled when a pre 1.1 PCIe device is detected. We do - * know L1 works correctly even for all ath5k pre 1.1 PCIe devices - * though but cannot currently undue the effect of a blacklist, for - * details you can read pcie_aspm_sanity_check() and see how it adjusts - * the device link capability. - * - * It may be possible in the future to implement some PCI API to allow - * drivers to override blacklists for pre 1.1 PCIe but for now it is - * best to accept that both L0s and L1 will be disabled completely for - * distributions shipping with CONFIG_PCIEASPM rather than having this - * issue present. Motivation for adding this new API will be to help - * with power consumption for some of these devices. - */ - pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S); - - ret = pci_enable_device(pdev); - if (ret) { - dev_err(&pdev->dev, "can't enable device\n"); - goto err; - } - - /* XXX 32-bit addressing only */ - ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (ret) { - dev_err(&pdev->dev, "32-bit DMA not available\n"); - goto err_dis; - } - - /* - * Cache line size is used to size and align various - * structures used to communicate with the hardware. - */ - pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz); - if (csz == 0) { - /* - * Linux 2.4.18 (at least) writes the cache line size - * register as a 16-bit wide register which is wrong. - * We must have this setup properly for rx buffer - * DMA to work so force a reasonable value here if it - * comes up zero. - */ - csz = L1_CACHE_BYTES >> 2; - pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz); - } - /* - * The default setting of latency timer yields poor results, - * set it to the value used by other systems. It may be worth - * tweaking this setting more. - */ - pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8); - - /* Enable bus mastering */ - pci_set_master(pdev); - - /* - * Disable the RETRY_TIMEOUT register (0x41) to keep - * PCI Tx retries from interfering with C3 CPU state. - */ - pci_write_config_byte(pdev, 0x41, 0); - - ret = pci_request_region(pdev, 0, "ath5k"); - if (ret) { - dev_err(&pdev->dev, "cannot reserve PCI memory region\n"); - goto err_dis; - } - - mem = pci_iomap(pdev, 0, 0); - if (!mem) { - dev_err(&pdev->dev, "cannot remap PCI memory region\n") ; - ret = -EIO; - goto err_reg; - } - - /* - * Allocate hw (mac80211 main struct) - * and hw->priv (driver private data) - */ - hw = ieee80211_alloc_hw(sizeof(*sc), &ath5k_hw_ops); - if (hw == NULL) { - dev_err(&pdev->dev, "cannot allocate ieee80211_hw\n"); - ret = -ENOMEM; - goto err_map; - } - - dev_info(&pdev->dev, "registered as '%s'\n", wiphy_name(hw->wiphy)); - - /* Initialize driver private data */ - SET_IEEE80211_DEV(hw, &pdev->dev); - hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | - IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | - IEEE80211_HW_SIGNAL_DBM; - - hw->wiphy->interface_modes = - BIT(NL80211_IFTYPE_AP) | - BIT(NL80211_IFTYPE_STATION) | - BIT(NL80211_IFTYPE_ADHOC) | - BIT(NL80211_IFTYPE_MESH_POINT); - - hw->extra_tx_headroom = 2; - hw->channel_change_time = 5000; - sc = hw->priv; - sc->hw = hw; - sc->pdev = pdev; - - /* - * Mark the device as detached to avoid processing - * interrupts until setup is complete. - */ - __set_bit(ATH_STAT_INVALID, sc->status); - - sc->iobase = mem; /* So we can unmap it on detach */ - sc->opmode = NL80211_IFTYPE_STATION; - sc->bintval = 1000; - mutex_init(&sc->lock); - spin_lock_init(&sc->rxbuflock); - spin_lock_init(&sc->txbuflock); - spin_lock_init(&sc->block); - - /* Set private data */ - pci_set_drvdata(pdev, sc); - - /* Setup interrupt handler */ - ret = request_irq(pdev->irq, ath5k_intr, IRQF_SHARED, "ath", sc); - if (ret) { - ATH5K_ERR(sc, "request_irq failed\n"); - goto err_free; - } - - /* If we passed the test, malloc an ath5k_hw struct */ - sc->ah = kzalloc(sizeof(struct ath5k_hw), GFP_KERNEL); - if (!sc->ah) { - ret = -ENOMEM; - ATH5K_ERR(sc, "out of memory\n"); - goto err_irq; - } - - sc->ah->ah_sc = sc; - sc->ah->ah_iobase = sc->iobase; - common = ath5k_hw_common(sc->ah); - common->ops = &ath5k_common_ops; - common->ah = sc->ah; - common->hw = hw; - common->cachelsz = csz << 2; /* convert to bytes */ - spin_lock_init(&common->cc_lock); - - /* Initialize device */ - ret = ath5k_hw_attach(sc); - if (ret) { - goto err_free_ah; - } - - /* set up multi-rate retry capabilities */ - if (sc->ah->ah_version == AR5K_AR5212) { - hw->max_rates = 4; - hw->max_rate_tries = 11; - } - - hw->vif_data_size = sizeof(struct ath5k_vif); - - /* Finish private driver data initialization */ - ret = ath5k_attach(pdev, hw); - if (ret) - goto err_ah; - - ATH5K_INFO(sc, "Atheros AR%s chip found (MAC: 0x%x, PHY: 0x%x)\n", - ath5k_chip_name(AR5K_VERSION_MAC, sc->ah->ah_mac_srev), - sc->ah->ah_mac_srev, - sc->ah->ah_phy_revision); - - if (!sc->ah->ah_single_chip) { - /* Single chip radio (!RF5111) */ - if (sc->ah->ah_radio_5ghz_revision && - !sc->ah->ah_radio_2ghz_revision) { - /* No 5GHz support -> report 2GHz radio */ - if (!test_bit(AR5K_MODE_11A, - sc->ah->ah_capabilities.cap_mode)) { - ATH5K_INFO(sc, "RF%s 2GHz radio found (0x%x)\n", - ath5k_chip_name(AR5K_VERSION_RAD, - sc->ah->ah_radio_5ghz_revision), - sc->ah->ah_radio_5ghz_revision); - /* No 2GHz support (5110 and some - * 5Ghz only cards) -> report 5Ghz radio */ - } else if (!test_bit(AR5K_MODE_11B, - sc->ah->ah_capabilities.cap_mode)) { - ATH5K_INFO(sc, "RF%s 5GHz radio found (0x%x)\n", - ath5k_chip_name(AR5K_VERSION_RAD, - sc->ah->ah_radio_5ghz_revision), - sc->ah->ah_radio_5ghz_revision); - /* Multiband radio */ - } else { - ATH5K_INFO(sc, "RF%s multiband radio found" - " (0x%x)\n", - ath5k_chip_name(AR5K_VERSION_RAD, - sc->ah->ah_radio_5ghz_revision), - sc->ah->ah_radio_5ghz_revision); - } - } - /* Multi chip radio (RF5111 - RF2111) -> - * report both 2GHz/5GHz radios */ - else if (sc->ah->ah_radio_5ghz_revision && - sc->ah->ah_radio_2ghz_revision){ - ATH5K_INFO(sc, "RF%s 5GHz radio found (0x%x)\n", - ath5k_chip_name(AR5K_VERSION_RAD, - sc->ah->ah_radio_5ghz_revision), - sc->ah->ah_radio_5ghz_revision); - ATH5K_INFO(sc, "RF%s 2GHz radio found (0x%x)\n", - ath5k_chip_name(AR5K_VERSION_RAD, - sc->ah->ah_radio_2ghz_revision), - sc->ah->ah_radio_2ghz_revision); - } - } - - ath5k_debug_init_device(sc); - - /* ready to process interrupts */ - __clear_bit(ATH_STAT_INVALID, sc->status); - - return 0; -err_ah: - ath5k_hw_detach(sc->ah); -err_free_ah: - kfree(sc->ah); -err_irq: - free_irq(pdev->irq, sc); -err_free: - ieee80211_free_hw(hw); -err_map: - pci_iounmap(pdev, mem); -err_reg: - pci_release_region(pdev, 0); -err_dis: - pci_disable_device(pdev); -err: - return ret; -} - -static void __devexit -ath5k_pci_remove(struct pci_dev *pdev) -{ - struct ath5k_softc *sc = pci_get_drvdata(pdev); - - ath5k_debug_finish_device(sc); - ath5k_detach(pdev, sc->hw); - ath5k_hw_detach(sc->ah); - kfree(sc->ah); - free_irq(pdev->irq, sc); - pci_iounmap(pdev, sc->iobase); - pci_release_region(pdev, 0); - pci_disable_device(pdev); - ieee80211_free_hw(sc->hw); -} - -#ifdef CONFIG_PM_SLEEP -static int ath5k_pci_suspend(struct device *dev) -{ - struct ath5k_softc *sc = pci_get_drvdata(to_pci_dev(dev)); - - ath5k_led_off(sc); - return 0; -} - -static int ath5k_pci_resume(struct device *dev) -{ - struct pci_dev *pdev = to_pci_dev(dev); - struct ath5k_softc *sc = pci_get_drvdata(pdev); - - /* - * Suspend/Resume resets the PCI configuration space, so we have to - * re-disable the RETRY_TIMEOUT register (0x41) to keep - * PCI Tx retries from interfering with C3 CPU state - */ - pci_write_config_byte(pdev, 0x41, 0); - - ath5k_led_enable(sc); - return 0; -} - -static SIMPLE_DEV_PM_OPS(ath5k_pm_ops, ath5k_pci_suspend, ath5k_pci_resume); -#define ATH5K_PM_OPS (&ath5k_pm_ops) -#else -#define ATH5K_PM_OPS NULL -#endif /* CONFIG_PM_SLEEP */ - -static struct pci_driver ath5k_pci_driver = { - .name = KBUILD_MODNAME, - .id_table = ath5k_pci_id_table, - .probe = ath5k_pci_probe, - .remove = __devexit_p(ath5k_pci_remove), - .driver.pm = ATH5K_PM_OPS, -}; - -/* - * Module init/exit functions - */ -static int __init -init_ath5k_pci(void) -{ - int ret; - - ret = pci_register_driver(&ath5k_pci_driver); - if (ret) { - printk(KERN_ERR "ath5k_pci: can't register pci driver\n"); - return ret; - } - - return 0; -} - -static void __exit -exit_ath5k_pci(void) -{ - pci_unregister_driver(&ath5k_pci_driver); -} - -module_init(init_ath5k_pci); -module_exit(exit_ath5k_pci); |