diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/init.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/init.c | 1213 |
1 files changed, 1213 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c new file mode 100644 index 000000000..4f00400c7 --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -0,0 +1,1213 @@ +/* + * 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 <linux/dma-mapping.h> +#include <linux/slab.h> +#include <linux/ath9k_platform.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_net.h> +#include <linux/nvmem-consumer.h> +#include <linux/relay.h> +#include <linux/dmi.h> +#include <net/ieee80211_radiotap.h> + +#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_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 ath9k_led_blink; +module_param_named(blink, ath9k_led_blink, int, 0444); +MODULE_PARM_DESC(blink, "Enable LED blink on activity"); + +static int ath9k_led_active_high = -1; +module_param_named(led_active_high, ath9k_led_active_high, int, 0444); +MODULE_PARM_DESC(led_active_high, "Invert LED polarity"); + +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"); + +static int ath9k_ps_enable; +module_param_named(ps_enable, ath9k_ps_enable, int, 0444); +MODULE_PARM_DESC(ps_enable, "Enable WLAN PowerSave"); + +#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT + +int ath9k_use_chanctx; +module_param_named(use_chanctx, ath9k_use_chanctx, int, 0444); +MODULE_PARM_DESC(use_chanctx, "Enable channel context for concurrency"); + +#endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ + +int ath9k_use_msi; +module_param_named(use_msi, ath9k_use_msi, int, 0444); +MODULE_PARM_DESC(use_msi, "Use MSI instead of INTx if possible"); + +bool is_ath9k_unloaded; + +#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 int __init set_use_msi(const struct dmi_system_id *dmi) +{ + ath9k_use_msi = 1; + return 1; +} + +static const struct dmi_system_id ath9k_quirks[] __initconst = { + { + .callback = set_use_msi, + .ident = "Dell Inspiron 24-3460", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 24-3460"), + }, + }, + { + .callback = set_use_msi, + .ident = "Dell Vostro 3262", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3262"), + }, + }, + { + .callback = set_use_msi, + .ident = "Dell Inspiron 3472", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 3472"), + }, + }, + { + .callback = set_use_msi, + .ident = "Dell Vostro 15-3572", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 15-3572"), + }, + }, + { + .callback = set_use_msi, + .ident = "Dell Inspiron 14-3473", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 14-3473"), + }, + }, + {} +}; + +static void ath9k_deinit_softc(struct ath_softc *sc); + +static void ath9k_op_ps_wakeup(struct ath_common *common) +{ + ath9k_ps_wakeup((struct ath_softc *) common->priv); +} + +static void ath9k_op_ps_restore(struct ath_common *common) +{ + ath9k_ps_restore((struct ath_softc *) common->priv); +} + +static const struct ath_ps_ops ath9k_ps_ops = { + .wakeup = ath9k_op_ps_wakeup, + .restore = ath9k_op_ps_restore, +}; + +/* + * 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 = 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 = 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 void ath9k_multi_ioread32(void *hw_priv, u32 *addr, + u32 *val, u16 count) +{ + int i; + + for (i = 0; i < count; i++) + val[i] = ath9k_ioread32(hw_priv, addr[i]); +} + + +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 = hw_priv; + struct ath_common *common = ath9k_hw_common(ah); + struct ath_softc *sc = (struct ath_softc *) common->priv; + unsigned long 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 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); + + /* synchronize DFS detector if regulatory domain changed */ + if (sc->dfs_detector != NULL) + sc->dfs_detector->set_dfs_domain(sc->dfs_detector, + request->dfs_region); + + /* Set tx power */ + if (!ah->curchan) + return; + + sc->cur_chan->txpower = 2 * ah->curchan->chan->max_power; + ath9k_ps_wakeup(sc); + ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false); + ath9k_cmn_update_txpow(ah, sc->cur_chan->cur_txpower, + sc->cur_chan->txpower, + &sc->cur_chan->cur_txpower); + 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 = 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); + 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; + } + return 0; +} + +static void ath9k_init_misc(struct ath_softc *sc) +{ + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + int i = 0; + + timer_setup(&common->ani.timer, ath_ani_calibrate, 0); + + common->last_rssi = ATH_RSSI_DUMMY_MARKER; + eth_broadcast_addr(common->bssidmask); + sc->beacon.slottime = 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_priv.ah = sc->sc_ah; + sc->spec_priv.spec_config.enabled = 0; + sc->spec_priv.spec_config.short_repeat = true; + sc->spec_priv.spec_config.count = 8; + sc->spec_priv.spec_config.endless = false; + sc->spec_priv.spec_config.period = 0xFF; + sc->spec_priv.spec_config.fft_period = 0xF; +} + +static void ath9k_init_pcoem_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 (!IS_ENABLED(CONFIG_ATH9K_PCOEM)) + return; + + 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"); + + if (sc->driver_data & ATH9K_PCI_KILLER) + ath_info(common, "Killer Wireless 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"); + } + + /* + * The default value of pll_pwrsave is 1. + * For certain AR9485 cards, it is set to 0. + * For AR9462, AR9565 it's set to 7. + */ + ah->config.pll_pwrsave = 1; + + if (sc->driver_data & ATH9K_PCI_NO_PLL_PWRSAVE) { + ah->config.pll_pwrsave = 0; + ath_info(common, "Disable PLL PowerSave\n"); + } + + if (sc->driver_data & ATH9K_PCI_LED_ACT_HI) + ah->config.led_active_high = true; +} + +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 = 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_nvmem_request_eeprom(struct ath_softc *sc) +{ + struct ath_hw *ah = sc->sc_ah; + struct nvmem_cell *cell; + void *buf; + size_t len; + int err; + + cell = devm_nvmem_cell_get(sc->dev, "calibration"); + if (IS_ERR(cell)) { + err = PTR_ERR(cell); + + /* nvmem cell might not be defined, or the nvmem + * subsystem isn't included. In this case, follow + * the established "just return 0;" convention of + * ath9k_init_platform to say: + * "All good. Nothing to see here. Please go on." + */ + if (err == -ENOENT || err == -EOPNOTSUPP) + return 0; + + return err; + } + + buf = nvmem_cell_read(cell, &len); + if (IS_ERR(buf)) + return PTR_ERR(buf); + + /* run basic sanity checks on the returned nvram cell length. + * That length has to be a multiple of a "u16" (i.e.: & 1). + * Furthermore, it has to be more than "let's say" 512 bytes + * but less than the maximum of AR9300_EEPROM_SIZE (16kb). + */ + if ((len & 1) == 1 || len < 512 || len >= AR9300_EEPROM_SIZE) { + kfree(buf); + return -EINVAL; + } + + /* devres manages the calibration values release on shutdown */ + ah->nvmem_blob = (u16 *)devm_kmemdup(sc->dev, buf, len, GFP_KERNEL); + kfree(buf); + if (!ah->nvmem_blob) + return -ENOMEM; + + ah->nvmem_blob_len = len; + ah->ah_flags &= ~AH_USE_EEPROM; + ah->ah_flags |= AH_NO_EEP_SWAP; + + return 0; +} + +static int ath9k_init_platform(struct ath_softc *sc) +{ + struct ath9k_platform_data *pdata = sc->dev->platform_data; + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); + int ret; + + if (!pdata) + return 0; + + if (!pdata->use_eeprom) { + ah->ah_flags &= ~AH_USE_EEPROM; + ah->gpio_mask = pdata->gpio_mask; + ah->gpio_val = pdata->gpio_val; + 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; + ah->disable_2ghz = pdata->disable_2ghz; + ah->disable_5ghz = pdata->disable_5ghz; + + if (!pdata->endian_check) + ah->ah_flags |= AH_NO_EEP_SWAP; + } + + if (pdata->eeprom_name) { + ret = ath9k_eeprom_request(sc, pdata->eeprom_name); + if (ret) + return ret; + } + + if (pdata->led_active_high) + ah->config.led_active_high = true; + + if (pdata->tx_gain_buffalo) + ah->config.tx_gain_buffalo = true; + + if (pdata->macaddr) + ether_addr_copy(common->macaddr, pdata->macaddr); + + return 0; +} + +static int ath9k_of_init(struct ath_softc *sc) +{ + struct device_node *np = sc->dev->of_node; + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); + enum ath_bus_type bus_type = common->bus_ops->ath_bus_type; + char eeprom_name[100]; + int ret; + + if (!of_device_is_available(np)) + return 0; + + ath_dbg(common, CONFIG, "parsing configuration from OF node\n"); + + if (of_property_read_bool(np, "qca,no-eeprom")) { + /* ath9k-eeprom-<bus>-<id>.bin */ + scnprintf(eeprom_name, sizeof(eeprom_name), + "ath9k-eeprom-%s-%s.bin", + ath_bus_type_to_string(bus_type), dev_name(ah->dev)); + + ret = ath9k_eeprom_request(sc, eeprom_name); + if (ret) + return ret; + + ah->ah_flags &= ~AH_USE_EEPROM; + ah->ah_flags |= AH_NO_EEP_SWAP; + } + + of_get_mac_address(np, common->macaddr); + + return 0; +} + +static int ath9k_init_softc(u16 devid, struct ath_softc *sc, + const struct ath_bus_ops *bus_ops) +{ + 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->ah_flags |= AH_USE_EEPROM; + ah->led_pin = -1; + ah->reg_ops.read = ath9k_ioread32; + ah->reg_ops.multi_read = ath9k_multi_ioread32; + ah->reg_ops.write = ath9k_iowrite32; + ah->reg_ops.rmw = ath9k_reg_rmw; + pCap = &ah->caps; + + common = ath9k_hw_common(ah); + + /* Will be cleared in ath9k_start() */ + set_bit(ATH_OP_INVALID, &common->op_flags); + + sc->sc_ah = ah; + sc->dfs_detector = dfs_pattern_detector_init(common, NL80211_DFS_UNSET); + sc->tx99_power = MAX_RATE_POWER + 1; + init_waitqueue_head(&sc->tx_wait); + sc->cur_chan = &sc->chanctx[0]; + if (!ath9k_is_chanctx_enabled()) + sc->cur_chan->hw_queue_base = 0; + + common->ops = &ah->reg_ops; + common->bus_ops = bus_ops; + common->ps_ops = &ath9k_ps_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_pcoem_platform(sc); + + ret = ath9k_init_platform(sc); + if (ret) + return ret; + + ret = ath9k_of_init(sc); + if (ret) + return ret; + + ret = ath9k_nvmem_request_eeprom(sc); + if (ret) + return ret; + + if (ath9k_led_active_high != -1) + ah->config.led_active_high = ath9k_led_active_high == 1; + + /* + * 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->intr_lock); + spin_lock_init(&sc->sc_serial_rw); + spin_lock_init(&sc->sc_pm_lock); + spin_lock_init(&sc->chan_lock); + mutex_init(&sc->mutex); + tasklet_setup(&sc->intr_tq, ath9k_tasklet); + tasklet_setup(&sc->bcon_tasklet, ath9k_beacon_tasklet); + + timer_setup(&sc->sleep_timer, ath_ps_full_sleep, 0); + INIT_WORK(&sc->hw_reset_work, ath_reset_work); + INIT_WORK(&sc->paprd_work, ath_paprd_calibrate); + INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work); + INIT_DELAYED_WORK(&sc->hw_check_work, ath_hw_check_work); + + ath9k_init_channel_context(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 */ + + /* Initializes the hardware for all supported chipsets */ + ret = ath9k_hw_init(ah); + if (ret) + goto err_hw; + + ret = ath9k_init_queues(sc); + if (ret) + goto err_queues; + + ret = ath9k_init_btcoex(sc); + if (ret) + goto err_btcoex; + + ret = ath9k_cmn_init_channels_rates(common); + if (ret) + goto err_btcoex; + + ret = ath9k_init_p2p(sc); + if (ret) + goto err_btcoex; + + ath9k_cmn_init_crypto(sc->sc_ah); + ath9k_init_misc(sc); + ath_chanctx_init(sc); + ath9k_offchannel_init(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); + dev_kfree_skb_any(sc->tx99_skb); + 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 ath_common *common = ath9k_hw_common(ah); + struct cfg80211_chan_def chandef; + int i; + + sband = &common->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_COMBINED_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, NL80211_BAND_2GHZ); + if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) + ath9k_init_band_txpower(sc, NL80211_BAND_5GHZ); + + ah->curchan = curchan; +} + +static const struct ieee80211_iface_limit if_limits[] = { + { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) }, + { .max = 8, .types = +#ifdef CONFIG_MAC80211_MESH + BIT(NL80211_IFTYPE_MESH_POINT) | +#endif + BIT(NL80211_IFTYPE_AP) }, + { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_CLIENT) | + BIT(NL80211_IFTYPE_P2P_GO) }, +}; + +#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT + +static const struct ieee80211_iface_limit if_limits_multi[] = { + { .max = 2, .types = BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_P2P_CLIENT) | + BIT(NL80211_IFTYPE_P2P_GO) }, + { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) }, + { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }, +}; + +static const struct ieee80211_iface_combination if_comb_multi[] = { + { + .limits = if_limits_multi, + .n_limits = ARRAY_SIZE(if_limits_multi), + .max_interfaces = 3, + .num_different_channels = 2, + .beacon_int_infra_match = true, + }, +}; + +#endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ + +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, +#ifdef CONFIG_ATH9K_DFS_CERTIFIED + .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) | + BIT(NL80211_CHAN_WIDTH_20) | + BIT(NL80211_CHAN_WIDTH_40), +#endif + }, +}; + +#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT +static void ath9k_set_mcc_capab(struct ath_softc *sc, struct ieee80211_hw *hw) +{ + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); + + if (!ath9k_is_chanctx_enabled()) + return; + + ieee80211_hw_set(hw, QUEUE_CONTROL); + hw->queues = ATH9K_NUM_TX_QUEUES; + hw->offchannel_tx_hw_queue = hw->queues - 1; + hw->wiphy->iface_combinations = if_comb_multi; + hw->wiphy->n_iface_combinations = ARRAY_SIZE(if_comb_multi); + hw->wiphy->max_scan_ssids = 255; + hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; + hw->wiphy->max_remain_on_channel_duration = 10000; + hw->chanctx_data_size = sizeof(void *); + hw->extra_beacon_tailroom = + sizeof(struct ieee80211_p2p_noa_attr) + 9; + + ath_dbg(common, CHAN_CTX, "Use channel contexts\n"); +} +#endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */ + +static 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); + + ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES); + ieee80211_hw_set(hw, SUPPORTS_RC_TABLE); + ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); + ieee80211_hw_set(hw, SPECTRUM_MGMT); + ieee80211_hw_set(hw, PS_NULLFUNC_STACK); + ieee80211_hw_set(hw, SIGNAL_DBM); + ieee80211_hw_set(hw, RX_INCLUDES_FCS); + ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING); + ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); + ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); + + if (ath9k_ps_enable) + ieee80211_hw_set(hw, SUPPORTS_PS); + + if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_HT) { + ieee80211_hw_set(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) + ieee80211_hw_set(hw, MFP_CAPABLE); + + hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR | + NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | + NL80211_FEATURE_P2P_GO_CTWIN; + + if (!IS_ENABLED(CONFIG_ATH9K_TX99)) { + hw->wiphy->interface_modes = + BIT(NL80211_IFTYPE_P2P_GO) | + BIT(NL80211_IFTYPE_P2P_CLIENT) | + BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_ADHOC) | + BIT(NL80211_IFTYPE_MESH_POINT) | + BIT(NL80211_IFTYPE_OCB); + + if (ath9k_is_chanctx_enabled()) + hw->wiphy->interface_modes |= + BIT(NL80211_IFTYPE_P2P_DEVICE); + + 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; + hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; + + hw->queues = 4; + hw->max_rates = 4; + hw->max_listen_interval = 10; + hw->max_rate_tries = 10; + hw->sta_data_size = sizeof(struct ath_node); + hw->vif_data_size = sizeof(struct ath_vif); + hw->txq_data_size = sizeof(struct ath_atx_tid); + hw->extra_tx_headroom = 4; + + 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[NL80211_BAND_2GHZ] = + &common->sbands[NL80211_BAND_2GHZ]; + if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) + hw->wiphy->bands[NL80211_BAND_5GHZ] = + &common->sbands[NL80211_BAND_5GHZ]; + +#ifdef CONFIG_ATH9K_CHANNEL_CONTEXT + ath9k_set_mcc_capab(sc, hw); +#endif + ath9k_init_wow(hw); + ath9k_cmn_reload_chainmask(ah); + + SET_IEEE80211_PERM_ADDR(hw, common->macaddr); + + wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); + wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_AIRTIME_FAIRNESS); + wiphy_ext_feature_set(hw->wiphy, + NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS); + wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CAN_REPLACE_PTK0); +} + +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 + + wiphy_read_of_freq_limits(hw->wiphy); + + /* 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_p2p(sc); + 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]); + + del_timer_sync(&sc->sleep_timer); + 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); + ath9k_deinit_wow(hw); + ieee80211_unregister_hw(hw); + ath_rx_cleanup(sc); + ath9k_deinit_softc(sc); +} + +/************************/ +/* Module Hooks */ +/************************/ + +static int __init ath9k_init(void) +{ + int error; + + error = ath_pci_init(); + if (error < 0) { + pr_err("No PCI devices found, driver not installed\n"); + error = -ENODEV; + goto err_out; + } + + error = ath_ahb_init(); + if (error < 0) { + error = -ENODEV; + goto err_pci_exit; + } + + dmi_check_system(ath9k_quirks); + + return 0; + + err_pci_exit: + ath_pci_exit(); + err_out: + return error; +} +module_init(ath9k_init); + +static void __exit ath9k_exit(void) +{ + is_ath9k_unloaded = true; + ath_ahb_exit(); + ath_pci_exit(); + pr_info("%s: Driver unloaded\n", dev_info); +} +module_exit(ath9k_exit); |