/* * Copyright (c) 2008-2011 Atheros Communications Inc. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include #include #include #include #include #include #include "ath9k.h" struct ath9k_eeprom_ctx { struct completion complete; struct ath_hw *ah; }; static char *dev_info = "ath9k"; MODULE_AUTHOR("Atheros Communications"); MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards."); MODULE_SUPPORTED_DEVICE("Atheros 802.11n WLAN cards"); MODULE_LICENSE("Dual BSD/GPL"); static unsigned int ath9k_debug = ATH_DBG_DEFAULT; module_param_named(debug, ath9k_debug, uint, 0); MODULE_PARM_DESC(debug, "Debugging mask"); int ath9k_modparam_nohwcrypt; module_param_named(nohwcrypt, ath9k_modparam_nohwcrypt, int, 0444); MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption"); int led_blink; module_param_named(blink, led_blink, int, 0444); MODULE_PARM_DESC(blink, "Enable LED blink on activity"); static int ath9k_btcoex_enable; module_param_named(btcoex_enable, ath9k_btcoex_enable, int, 0444); MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence"); static int ath9k_bt_ant_diversity; module_param_named(bt_ant_diversity, ath9k_bt_ant_diversity, int, 0444); MODULE_PARM_DESC(bt_ant_diversity, "Enable WLAN/BT RX antenna diversity"); bool is_ath9k_unloaded; /* We use the hw_value as an index into our private channel structure */ #define CHAN2G(_freq, _idx) { \ .band = IEEE80211_BAND_2GHZ, \ .center_freq = (_freq), \ .hw_value = (_idx), \ .max_power = 20, \ } #define CHAN5G(_freq, _idx) { \ .band = IEEE80211_BAND_5GHZ, \ .center_freq = (_freq), \ .hw_value = (_idx), \ .max_power = 20, \ } /* Some 2 GHz radios are actually tunable on 2312-2732 * on 5 MHz steps, we support the channels which we know * we have calibration data for all cards though to make * this static */ static const struct ieee80211_channel ath9k_2ghz_chantable[] = { CHAN2G(2412, 0), /* Channel 1 */ CHAN2G(2417, 1), /* Channel 2 */ CHAN2G(2422, 2), /* Channel 3 */ CHAN2G(2427, 3), /* Channel 4 */ CHAN2G(2432, 4), /* Channel 5 */ CHAN2G(2437, 5), /* Channel 6 */ CHAN2G(2442, 6), /* Channel 7 */ CHAN2G(2447, 7), /* Channel 8 */ CHAN2G(2452, 8), /* Channel 9 */ CHAN2G(2457, 9), /* Channel 10 */ CHAN2G(2462, 10), /* Channel 11 */ CHAN2G(2467, 11), /* Channel 12 */ CHAN2G(2472, 12), /* Channel 13 */ CHAN2G(2484, 13), /* Channel 14 */ }; /* Some 5 GHz radios are actually tunable on XXXX-YYYY * on 5 MHz steps, we support the channels which we know * we have calibration data for all cards though to make * this static */ static const struct ieee80211_channel ath9k_5ghz_chantable[] = { /* _We_ call this UNII 1 */ CHAN5G(5180, 14), /* Channel 36 */ CHAN5G(5200, 15), /* Channel 40 */ CHAN5G(5220, 16), /* Channel 44 */ CHAN5G(5240, 17), /* Channel 48 */ /* _We_ call this UNII 2 */ CHAN5G(5260, 18), /* Channel 52 */ CHAN5G(5280, 19), /* Channel 56 */ CHAN5G(5300, 20), /* Channel 60 */ CHAN5G(5320, 21), /* Channel 64 */ /* _We_ call this "Middle band" */ CHAN5G(5500, 22), /* Channel 100 */ CHAN5G(5520, 23), /* Channel 104 */ CHAN5G(5540, 24), /* Channel 108 */ CHAN5G(5560, 25), /* Channel 112 */ CHAN5G(5580, 26), /* Channel 116 */ CHAN5G(5600, 27), /* Channel 120 */ CHAN5G(5620, 28), /* Channel 124 */ CHAN5G(5640, 29), /* Channel 128 */ CHAN5G(5660, 30), /* Channel 132 */ CHAN5G(5680, 31), /* Channel 136 */ CHAN5G(5700, 32), /* Channel 140 */ /* _We_ call this UNII 3 */ CHAN5G(5745, 33), /* Channel 149 */ CHAN5G(5765, 34), /* Channel 153 */ CHAN5G(5785, 35), /* Channel 157 */ CHAN5G(5805, 36), /* Channel 161 */ CHAN5G(5825, 37), /* Channel 165 */ }; /* Atheros hardware rate code addition for short premble */ #define SHPCHECK(__hw_rate, __flags) \ ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04 ) : 0) #define RATE(_bitrate, _hw_rate, _flags) { \ .bitrate = (_bitrate), \ .flags = (_flags), \ .hw_value = (_hw_rate), \ .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \ } static struct ieee80211_rate ath9k_legacy_rates[] = { RATE(10, 0x1b, 0), RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE), RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE), RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE), RATE(60, 0x0b, (IEEE80211_RATE_SUPPORTS_5MHZ | IEEE80211_RATE_SUPPORTS_10MHZ)), RATE(90, 0x0f, (IEEE80211_RATE_SUPPORTS_5MHZ | IEEE80211_RATE_SUPPORTS_10MHZ)), RATE(120, 0x0a, (IEEE80211_RATE_SUPPORTS_5MHZ | IEEE80211_RATE_SUPPORTS_10MHZ)), RATE(180, 0x0e, (IEEE80211_RATE_SUPPORTS_5MHZ | IEEE80211_RATE_SUPPORTS_10MHZ)), RATE(240, 0x09, (IEEE80211_RATE_SUPPORTS_5MHZ | IEEE80211_RATE_SUPPORTS_10MHZ)), RATE(360, 0x0d, (IEEE80211_RATE_SUPPORTS_5MHZ | IEEE80211_RATE_SUPPORTS_10MHZ)), RATE(480, 0x08, (IEEE80211_RATE_SUPPORTS_5MHZ | IEEE80211_RATE_SUPPORTS_10MHZ)), RATE(540, 0x0c, (IEEE80211_RATE_SUPPORTS_5MHZ | IEEE80211_RATE_SUPPORTS_10MHZ)), }; #ifdef CONFIG_MAC80211_LEDS static const struct ieee80211_tpt_blink ath9k_tpt_blink[] = { { .throughput = 0 * 1024, .blink_time = 334 }, { .throughput = 1 * 1024, .blink_time = 260 }, { .throughput = 5 * 1024, .blink_time = 220 }, { .throughput = 10 * 1024, .blink_time = 190 }, { .throughput = 20 * 1024, .blink_time = 170 }, { .throughput = 50 * 1024, .blink_time = 150 }, { .throughput = 70 * 1024, .blink_time = 130 }, { .throughput = 100 * 1024, .blink_time = 110 }, { .throughput = 200 * 1024, .blink_time = 80 }, { .throughput = 300 * 1024, .blink_time = 50 }, }; #endif static void ath9k_deinit_softc(struct ath_softc *sc); /* * 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. */ static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset) { struct ath_hw *ah = (struct ath_hw *) hw_priv; struct ath_common *common = ath9k_hw_common(ah); struct ath_softc *sc = (struct ath_softc *) common->priv; if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) { unsigned long flags; spin_lock_irqsave(&sc->sc_serial_rw, flags); iowrite32(val, sc->mem + reg_offset); spin_unlock_irqrestore(&sc->sc_serial_rw, flags); } else iowrite32(val, sc->mem + reg_offset); } static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset) { struct ath_hw *ah = (struct ath_hw *) hw_priv; struct ath_common *common = ath9k_hw_common(ah); struct ath_softc *sc = (struct ath_softc *) common->priv; u32 val; if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) { unsigned long flags; spin_lock_irqsave(&sc->sc_serial_rw, flags); val = ioread32(sc->mem + reg_offset); spin_unlock_irqrestore(&sc->sc_serial_rw, flags); } else val = ioread32(sc->mem + reg_offset); return val; } static unsigned int __ath9k_reg_rmw(struct ath_softc *sc, u32 reg_offset, u32 set, u32 clr) { u32 val; val = ioread32(sc->mem + reg_offset); val &= ~clr; val |= set; iowrite32(val, sc->mem + reg_offset); return val; } static unsigned int ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr) { struct ath_hw *ah = (struct ath_hw *) hw_priv; struct ath_common *common = ath9k_hw_common(ah); struct ath_softc *sc = (struct ath_softc *) common->priv; unsigned long uninitialized_var(flags); u32 val; if (NR_CPUS > 1 && ah->config.serialize_regmode == SER_REG_MODE_ON) { spin_lock_irqsave(&sc->sc_serial_rw, flags); val = __ath9k_reg_rmw(sc, reg_offset, set, clr); spin_unlock_irqrestore(&sc->sc_serial_rw, flags); } else val = __ath9k_reg_rmw(sc, reg_offset, set, clr); return val; } /**************************/ /* Initialization */ /**************************/ static void setup_ht_cap(struct ath_softc *sc, struct ieee80211_sta_ht_cap *ht_info) { struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); u8 tx_streams, rx_streams; int i, max_streams; ht_info->ht_supported = true; ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | IEEE80211_HT_CAP_SM_PS | IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_DSSSCCK40; if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_LDPC) ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING; if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20) ht_info->cap |= IEEE80211_HT_CAP_SGI_20; ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8; if (AR_SREV_9330(ah) || AR_SREV_9485(ah) || AR_SREV_9565(ah)) max_streams = 1; else if (AR_SREV_9462(ah)) max_streams = 2; else if (AR_SREV_9300_20_OR_LATER(ah)) max_streams = 3; else max_streams = 2; if (AR_SREV_9280_20_OR_LATER(ah)) { if (max_streams >= 2) ht_info->cap |= IEEE80211_HT_CAP_TX_STBC; ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT); } /* set up supported mcs set */ memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); tx_streams = ath9k_cmn_count_streams(ah->txchainmask, max_streams); rx_streams = ath9k_cmn_count_streams(ah->rxchainmask, max_streams); ath_dbg(common, CONFIG, "TX streams %d, RX streams: %d\n", tx_streams, rx_streams); if (tx_streams != rx_streams) { ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; ht_info->mcs.tx_params |= ((tx_streams - 1) << IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); } for (i = 0; i < rx_streams; i++) ht_info->mcs.rx_mask[i] = 0xff; ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED; } static void ath9k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) { struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); struct ath_softc *sc = hw->priv; struct ath_hw *ah = sc->sc_ah; struct ath_regulatory *reg = ath9k_hw_regulatory(ah); ath_reg_notifier_apply(wiphy, request, reg); /* Set tx power */ if (ah->curchan) { sc->config.txpowlimit = 2 * ah->curchan->chan->max_power; ath9k_ps_wakeup(sc); ath9k_hw_set_txpowerlimit(ah, sc->config.txpowlimit, false); sc->curtxpow = ath9k_hw_regulatory(ah)->power_limit; /* synchronize DFS detector if regulatory domain changed */ if (sc->dfs_detector != NULL) sc->dfs_detector->set_dfs_domain(sc->dfs_detector, request->dfs_region); ath9k_ps_restore(sc); } } /* * This function will allocate both the DMA descriptor structure, and the * buffers it contains. These are used to contain the descriptors used * by the system. */ int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, struct list_head *head, const char *name, int nbuf, int ndesc, bool is_tx) { struct ath_common *common = ath9k_hw_common(sc->sc_ah); u8 *ds; int i, bsize, desc_len; ath_dbg(common, CONFIG, "%s DMA: %u buffers %u desc/buf\n", name, nbuf, ndesc); INIT_LIST_HEAD(head); if (is_tx) desc_len = sc->sc_ah->caps.tx_desc_len; else desc_len = sizeof(struct ath_desc); /* ath_desc must be a multiple of DWORDs */ if ((desc_len % 4) != 0) { ath_err(common, "ath_desc not DWORD aligned\n"); BUG_ON((desc_len % 4) != 0); return -ENOMEM; } dd->dd_desc_len = desc_len * nbuf * ndesc; /* * Need additional DMA memory because we can't use * descriptors that cross the 4K page boundary. Assume * one skipped descriptor per 4K page. */ if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) { u32 ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dd->dd_desc_len); u32 dma_len; while (ndesc_skipped) { dma_len = ndesc_skipped * desc_len; dd->dd_desc_len += dma_len; ndesc_skipped = ATH_DESC_4KB_BOUND_NUM_SKIPPED(dma_len); } } /* allocate descriptors */ dd->dd_desc = dmam_alloc_coherent(sc->dev, dd->dd_desc_len, &dd->dd_desc_paddr, GFP_KERNEL); if (!dd->dd_desc) return -ENOMEM; ds = (u8 *) dd->dd_desc; ath_dbg(common, CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n", name, ds, (u32) dd->dd_desc_len, ito64(dd->dd_desc_paddr), /*XXX*/(u32) dd->dd_desc_len); /* allocate buffers */ if (is_tx) { struct ath_buf *bf; bsize = sizeof(struct ath_buf) * nbuf; bf = devm_kzalloc(sc->dev, bsize, GFP_KERNEL); if (!bf) return -ENOMEM; for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) { bf->bf_desc = ds; bf->bf_daddr = DS2PHYS(dd, ds); if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) { /* * Skip descriptor addresses which can cause 4KB * boundary crossing (addr + length) with a 32 dword * descriptor fetch. */ while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) { BUG_ON((caddr_t) bf->bf_desc >= ((caddr_t) dd->dd_desc + dd->dd_desc_len)); ds += (desc_len * ndesc); bf->bf_desc = ds; bf->bf_daddr = DS2PHYS(dd, ds); } } list_add_tail(&bf->list, head); } } else { struct ath_rxbuf *bf; bsize = sizeof(struct ath_rxbuf) * nbuf; bf = devm_kzalloc(sc->dev, bsize, GFP_KERNEL); if (!bf) return -ENOMEM; for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) { bf->bf_desc = ds; bf->bf_daddr = DS2PHYS(dd, ds); if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_4KB_SPLITTRANS)) { /* * Skip descriptor addresses which can cause 4KB * boundary crossing (addr + length) with a 32 dword * descriptor fetch. */ while (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr)) { BUG_ON((caddr_t) bf->bf_desc >= ((caddr_t) dd->dd_desc + dd->dd_desc_len)); ds += (desc_len * ndesc); bf->bf_desc = ds; bf->bf_daddr = DS2PHYS(dd, ds); } } list_add_tail(&bf->list, head); } } return 0; } static int ath9k_init_queues(struct ath_softc *sc) { int i = 0; sc->beacon.beaconq = ath9k_hw_beaconq_setup(sc->sc_ah); sc->beacon.cabq = ath_txq_setup(sc, ATH9K_TX_QUEUE_CAB, 0); sc->config.cabqReadytime = ATH_CABQ_READY_TIME; ath_cabq_update(sc); sc->tx.uapsdq = ath_txq_setup(sc, ATH9K_TX_QUEUE_UAPSD, 0); for (i = 0; i < IEEE80211_NUM_ACS; i++) { sc->tx.txq_map[i] = ath_txq_setup(sc, ATH9K_TX_QUEUE_DATA, i); sc->tx.txq_map[i]->mac80211_qnum = i; sc->tx.txq_max_pending[i] = ATH_MAX_QDEPTH; } return 0; } static int ath9k_init_channels_rates(struct ath_softc *sc) { void *channels; BUILD_BUG_ON(ARRAY_SIZE(ath9k_2ghz_chantable) + ARRAY_SIZE(ath9k_5ghz_chantable) != ATH9K_NUM_CHANNELS); if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) { channels = devm_kzalloc(sc->dev, sizeof(ath9k_2ghz_chantable), GFP_KERNEL); if (!channels) return -ENOMEM; memcpy(channels, ath9k_2ghz_chantable, sizeof(ath9k_2ghz_chantable)); sc->sbands[IEEE80211_BAND_2GHZ].channels = channels; sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ; sc->sbands[IEEE80211_BAND_2GHZ].n_channels = ARRAY_SIZE(ath9k_2ghz_chantable); sc->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates; sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates = ARRAY_SIZE(ath9k_legacy_rates); } if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) { channels = devm_kzalloc(sc->dev, sizeof(ath9k_5ghz_chantable), GFP_KERNEL); if (!channels) return -ENOMEM; memcpy(channels, ath9k_5ghz_chantable, sizeof(ath9k_5ghz_chantable)); sc->sbands[IEEE80211_BAND_5GHZ].channels = channels; sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ; sc->sbands[IEEE80211_BAND_5GHZ].n_channels = ARRAY_SIZE(ath9k_5ghz_chantable); sc->sbands[IEEE80211_BAND_5GHZ].bitrates = ath9k_legacy_rates + 4; sc->sbands[IEEE80211_BAND_5GHZ].n_bitrates = ARRAY_SIZE(ath9k_legacy_rates) - 4; } return 0; } static void ath9k_init_misc(struct ath_softc *sc) { struct ath_common *common = ath9k_hw_common(sc->sc_ah); int i = 0; setup_timer(&common->ani.timer, ath_ani_calibrate, (unsigned long)sc); sc->last_rssi = ATH_RSSI_DUMMY_MARKER; sc->config.txpowlimit = ATH_TXPOWER_MAX; memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN); sc->beacon.slottime = ATH9K_SLOT_TIME_9; for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) sc->beacon.bslot[i] = NULL; if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) sc->ant_comb.count = ATH_ANT_DIV_COMB_INIT_COUNT; sc->spec_config.enabled = 0; sc->spec_config.short_repeat = true; sc->spec_config.count = 8; sc->spec_config.endless = false; sc->spec_config.period = 0xFF; sc->spec_config.fft_period = 0xF; } static void ath9k_init_platform(struct ath_softc *sc) { struct ath_hw *ah = sc->sc_ah; struct ath9k_hw_capabilities *pCap = &ah->caps; struct ath_common *common = ath9k_hw_common(ah); if (common->bus_ops->ath_bus_type != ATH_PCI) return; if (sc->driver_data & (ATH9K_PCI_CUS198 | ATH9K_PCI_CUS230)) { ah->config.xlna_gpio = 9; ah->config.xatten_margin_cfg = true; ah->config.alt_mingainidx = true; ah->config.ant_ctrl_comm2g_switch_enable = 0x000BBB88; sc->ant_comb.low_rssi_thresh = 20; sc->ant_comb.fast_div_bias = 3; ath_info(common, "Set parameters for %s\n", (sc->driver_data & ATH9K_PCI_CUS198) ? "CUS198" : "CUS230"); } if (sc->driver_data & ATH9K_PCI_CUS217) ath_info(common, "CUS217 card detected\n"); if (sc->driver_data & ATH9K_PCI_CUS252) ath_info(common, "CUS252 card detected\n"); if (sc->driver_data & ATH9K_PCI_AR9565_1ANT) ath_info(common, "WB335 1-ANT card detected\n"); if (sc->driver_data & ATH9K_PCI_AR9565_2ANT) ath_info(common, "WB335 2-ANT card detected\n"); /* * Some WB335 cards do not support antenna diversity. Since * we use a hardcoded value for AR9565 instead of using the * EEPROM/OTP data, remove the combining feature from * the HW capabilities bitmap. */ if (sc->driver_data & (ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_AR9565_2ANT)) { if (!(sc->driver_data & ATH9K_PCI_BT_ANT_DIV)) pCap->hw_caps &= ~ATH9K_HW_CAP_ANT_DIV_COMB; } if (sc->driver_data & ATH9K_PCI_BT_ANT_DIV) { pCap->hw_caps |= ATH9K_HW_CAP_BT_ANT_DIV; ath_info(common, "Set BT/WLAN RX diversity capability\n"); } if (sc->driver_data & ATH9K_PCI_D3_L1_WAR) { ah->config.pcie_waen = 0x0040473b; ath_info(common, "Enable WAR for ASPM D3/L1\n"); } } static void ath9k_eeprom_request_cb(const struct firmware *eeprom_blob, void *ctx) { struct ath9k_eeprom_ctx *ec = ctx; if (eeprom_blob) ec->ah->eeprom_blob = eeprom_blob; complete(&ec->complete); } static int ath9k_eeprom_request(struct ath_softc *sc, const char *name) { struct ath9k_eeprom_ctx ec; struct ath_hw *ah = ah = sc->sc_ah; int err; /* try to load the EEPROM content asynchronously */ init_completion(&ec.complete); ec.ah = sc->sc_ah; err = request_firmware_nowait(THIS_MODULE, 1, name, sc->dev, GFP_KERNEL, &ec, ath9k_eeprom_request_cb); if (err < 0) { ath_err(ath9k_hw_common(ah), "EEPROM request failed\n"); return err; } wait_for_completion(&ec.complete); if (!ah->eeprom_blob) { ath_err(ath9k_hw_common(ah), "Unable to load EEPROM file %s\n", name); return -EINVAL; } return 0; } static void ath9k_eeprom_release(struct ath_softc *sc) { release_firmware(sc->sc_ah->eeprom_blob); } static int ath9k_init_softc(u16 devid, struct ath_softc *sc, const struct ath_bus_ops *bus_ops) { struct ath9k_platform_data *pdata = sc->dev->platform_data; struct ath_hw *ah = NULL; struct ath9k_hw_capabilities *pCap; struct ath_common *common; int ret = 0, i; int csz = 0; ah = devm_kzalloc(sc->dev, sizeof(struct ath_hw), GFP_KERNEL); if (!ah) return -ENOMEM; ah->dev = sc->dev; ah->hw = sc->hw; ah->hw_version.devid = devid; ah->reg_ops.read = ath9k_ioread32; ah->reg_ops.write = ath9k_iowrite32; ah->reg_ops.rmw = ath9k_reg_rmw; atomic_set(&ah->intr_ref_cnt, -1); sc->sc_ah = ah; pCap = &ah->caps; sc->dfs_detector = dfs_pattern_detector_init(ah, NL80211_DFS_UNSET); if (!pdata) { ah->ah_flags |= AH_USE_EEPROM; sc->sc_ah->led_pin = -1; } else { sc->sc_ah->gpio_mask = pdata->gpio_mask; sc->sc_ah->gpio_val = pdata->gpio_val; sc->sc_ah->led_pin = pdata->led_pin; ah->is_clk_25mhz = pdata->is_clk_25mhz; ah->get_mac_revision = pdata->get_mac_revision; ah->external_reset = pdata->external_reset; } common = ath9k_hw_common(ah); common->ops = &ah->reg_ops; common->bus_ops = bus_ops; common->ah = ah; common->hw = sc->hw; common->priv = sc; common->debug_mask = ath9k_debug; common->btcoex_enabled = ath9k_btcoex_enable == 1; common->disable_ani = false; /* * Platform quirks. */ ath9k_init_platform(sc); /* * Enable WLAN/BT RX Antenna diversity only when: * * - BTCOEX is disabled. * - the user manually requests the feature. * - the HW cap is set using the platform data. */ if (!common->btcoex_enabled && ath9k_bt_ant_diversity && (pCap->hw_caps & ATH9K_HW_CAP_BT_ANT_DIV)) common->bt_ant_diversity = 1; spin_lock_init(&common->cc_lock); spin_lock_init(&sc->sc_serial_rw); spin_lock_init(&sc->sc_pm_lock); mutex_init(&sc->mutex); tasklet_init(&sc->intr_tq, ath9k_tasklet, (unsigned long)sc); tasklet_init(&sc->bcon_tasklet, ath9k_beacon_tasklet, (unsigned long)sc); INIT_WORK(&sc->hw_reset_work, ath_reset_work); INIT_WORK(&sc->hw_check_work, ath_hw_check); INIT_WORK(&sc->paprd_work, ath_paprd_calibrate); INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work); setup_timer(&sc->rx_poll_timer, ath_rx_poll, (unsigned long)sc); /* * Cache line size is used to size and align various * structures used to communicate with the hardware. */ ath_read_cachesize(common, &csz); common->cachelsz = csz << 2; /* convert to bytes */ if (pdata && pdata->eeprom_name) { ret = ath9k_eeprom_request(sc, pdata->eeprom_name); if (ret) return ret; } /* Initializes the hardware for all supported chipsets */ ret = ath9k_hw_init(ah); if (ret) goto err_hw; if (pdata && pdata->macaddr) memcpy(common->macaddr, pdata->macaddr, ETH_ALEN); ret = ath9k_init_queues(sc); if (ret) goto err_queues; ret = ath9k_init_btcoex(sc); if (ret) goto err_btcoex; ret = ath9k_init_channels_rates(sc); if (ret) goto err_btcoex; ath9k_cmn_init_crypto(sc->sc_ah); ath9k_init_misc(sc); ath_fill_led_pin(sc); if (common->bus_ops->aspm_init) common->bus_ops->aspm_init(common); return 0; err_btcoex: for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) if (ATH_TXQ_SETUP(sc, i)) ath_tx_cleanupq(sc, &sc->tx.txq[i]); err_queues: ath9k_hw_deinit(ah); err_hw: ath9k_eeprom_release(sc); return ret; } static void ath9k_init_band_txpower(struct ath_softc *sc, int band) { struct ieee80211_supported_band *sband; struct ieee80211_channel *chan; struct ath_hw *ah = sc->sc_ah; struct cfg80211_chan_def chandef; int i; sband = &sc->sbands[band]; for (i = 0; i < sband->n_channels; i++) { chan = &sband->channels[i]; ah->curchan = &ah->channels[chan->hw_value]; cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_HT20); ath9k_cmn_get_channel(sc->hw, ah, &chandef); ath9k_hw_set_txpowerlimit(ah, MAX_RATE_POWER, true); } } static void ath9k_init_txpower_limits(struct ath_softc *sc) { struct ath_hw *ah = sc->sc_ah; struct ath9k_channel *curchan = ah->curchan; if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) ath9k_init_band_txpower(sc, IEEE80211_BAND_2GHZ); if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) ath9k_init_band_txpower(sc, IEEE80211_BAND_5GHZ); ah->curchan = curchan; } void ath9k_reload_chainmask_settings(struct ath_softc *sc) { if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT)) return; if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_2GHZ].ht_cap); if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) setup_ht_cap(sc, &sc->sbands[IEEE80211_BAND_5GHZ].ht_cap); } static const struct ieee80211_iface_limit if_limits[] = { { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_WDS) }, { .max = 8, .types = #ifdef CONFIG_MAC80211_MESH BIT(NL80211_IFTYPE_MESH_POINT) | #endif BIT(NL80211_IFTYPE_AP) | BIT(NL80211_IFTYPE_P2P_GO) }, }; static const struct ieee80211_iface_limit if_dfs_limits[] = { { .max = 1, .types = BIT(NL80211_IFTYPE_AP) }, }; static const struct ieee80211_iface_combination if_comb[] = { { .limits = if_limits, .n_limits = ARRAY_SIZE(if_limits), .max_interfaces = 2048, .num_different_channels = 1, .beacon_int_infra_match = true, }, { .limits = if_dfs_limits, .n_limits = ARRAY_SIZE(if_dfs_limits), .max_interfaces = 1, .num_different_channels = 1, .beacon_int_infra_match = true, .radar_detect_widths = BIT(NL80211_CHAN_NO_HT) | BIT(NL80211_CHAN_HT20), } }; #ifdef CONFIG_PM static const struct wiphy_wowlan_support ath9k_wowlan_support = { .flags = WIPHY_WOWLAN_MAGIC_PKT | WIPHY_WOWLAN_DISCONNECT, .n_patterns = MAX_NUM_USER_PATTERN, .pattern_min_len = 1, .pattern_max_len = MAX_PATTERN_SIZE, }; #endif void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw) { struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_SUPPORTS_PS | IEEE80211_HW_PS_NULLFUNC_STACK | IEEE80211_HW_SPECTRUM_MGMT | IEEE80211_HW_REPORTS_TX_ACK_STATUS | IEEE80211_HW_SUPPORTS_RC_TABLE | IEEE80211_HW_SUPPORTS_HT_CCK_RATES; if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) { hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION; if (AR_SREV_9280_20_OR_LATER(ah)) hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_STBC; } if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || ath9k_modparam_nohwcrypt) hw->flags |= IEEE80211_HW_MFP_CAPABLE; hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR; hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_P2P_GO) | BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_AP) | BIT(NL80211_IFTYPE_WDS) | BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MESH_POINT); hw->wiphy->iface_combinations = if_comb; hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb); hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_5_10_MHZ; hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; #ifdef CONFIG_PM_SLEEP if ((ah->caps.hw_caps & ATH9K_HW_WOW_DEVICE_CAPABLE) && (sc->driver_data & ATH9K_PCI_WOW) && device_can_wakeup(sc->dev)) hw->wiphy->wowlan = &ath9k_wowlan_support; atomic_set(&sc->wow_sleep_proc_intr, -1); atomic_set(&sc->wow_got_bmiss_intr, -1); #endif hw->queues = 4; hw->max_rates = 4; hw->channel_change_time = 5000; hw->max_listen_interval = 1; hw->max_rate_tries = 10; hw->sta_data_size = sizeof(struct ath_node); hw->vif_data_size = sizeof(struct ath_vif); hw->wiphy->available_antennas_rx = BIT(ah->caps.max_rxchains) - 1; hw->wiphy->available_antennas_tx = BIT(ah->caps.max_txchains) - 1; /* single chain devices with rx diversity */ if (ah->caps.hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB) hw->wiphy->available_antennas_rx = BIT(0) | BIT(1); sc->ant_rx = hw->wiphy->available_antennas_rx; sc->ant_tx = hw->wiphy->available_antennas_tx; if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &sc->sbands[IEEE80211_BAND_2GHZ]; if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &sc->sbands[IEEE80211_BAND_5GHZ]; ath9k_reload_chainmask_settings(sc); SET_IEEE80211_PERM_ADDR(hw, common->macaddr); } int ath9k_init_device(u16 devid, struct ath_softc *sc, const struct ath_bus_ops *bus_ops) { struct ieee80211_hw *hw = sc->hw; struct ath_common *common; struct ath_hw *ah; int error = 0; struct ath_regulatory *reg; /* Bring up device */ error = ath9k_init_softc(devid, sc, bus_ops); if (error) return error; ah = sc->sc_ah; common = ath9k_hw_common(ah); ath9k_set_hw_capab(sc, hw); /* Initialize regulatory */ error = ath_regd_init(&common->regulatory, sc->hw->wiphy, ath9k_reg_notifier); if (error) goto deinit; reg = &common->regulatory; /* Setup TX DMA */ error = ath_tx_init(sc, ATH_TXBUF); if (error != 0) goto deinit; /* Setup RX DMA */ error = ath_rx_init(sc, ATH_RXBUF); if (error != 0) goto deinit; ath9k_init_txpower_limits(sc); #ifdef CONFIG_MAC80211_LEDS /* must be initialized before ieee80211_register_hw */ sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw, IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink, ARRAY_SIZE(ath9k_tpt_blink)); #endif /* Register with mac80211 */ error = ieee80211_register_hw(hw); if (error) goto rx_cleanup; error = ath9k_init_debug(ah); if (error) { ath_err(common, "Unable to create debugfs files\n"); goto unregister; } /* Handle world regulatory */ if (!ath_is_world_regd(reg)) { error = regulatory_hint(hw->wiphy, reg->alpha2); if (error) goto debug_cleanup; } ath_init_leds(sc); ath_start_rfkill_poll(sc); return 0; debug_cleanup: ath9k_deinit_debug(sc); unregister: ieee80211_unregister_hw(hw); rx_cleanup: ath_rx_cleanup(sc); deinit: ath9k_deinit_softc(sc); return error; } /*****************************/ /* De-Initialization */ /*****************************/ static void ath9k_deinit_softc(struct ath_softc *sc) { int i = 0; ath9k_deinit_btcoex(sc); 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_deinit(sc->sc_ah); if (sc->dfs_detector != NULL) sc->dfs_detector->exit(sc->dfs_detector); ath9k_eeprom_release(sc); } void ath9k_deinit_device(struct ath_softc *sc) { struct ieee80211_hw *hw = sc->hw; ath9k_ps_wakeup(sc); wiphy_rfkill_stop_polling(sc->hw->wiphy); ath_deinit_leds(sc); ath9k_ps_restore(sc); ath9k_deinit_debug(sc); ieee80211_unregister_hw(hw); ath_rx_cleanup(sc); ath9k_deinit_softc(sc); } /************************/ /* Module Hooks */ /************************/ static int __init ath9k_init(void) { int error; /* Register rate control algorithm */ error = ath_rate_control_register(); if (error != 0) { pr_err("Unable to register rate control algorithm: %d\n", error); goto err_out; } error = ath_pci_init(); if (error < 0) { pr_err("No PCI devices found, driver not installed\n"); error = -ENODEV; goto err_rate_unregister; } error = ath_ahb_init(); if (error < 0) { error = -ENODEV; goto err_pci_exit; } return 0; err_pci_exit: ath_pci_exit(); err_rate_unregister: ath_rate_control_unregister(); err_out: return error; } module_init(ath9k_init); static void __exit ath9k_exit(void) { is_ath9k_unloaded = true; ath_ahb_exit(); ath_pci_exit(); ath_rate_control_unregister(); pr_info("%s: Driver unloaded\n", dev_info); } module_exit(ath9k_exit);