--- /dev/null
+/*
+ * 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/relay.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_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 ath9k_led_blink;
+module_param_named(blink, ath9k_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");
+
+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 */
+
+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 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 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 = (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 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 = (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 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)
+ 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);
+ /* 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);
+ 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 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);
+
+ common->last_rssi = ATH_RSSI_DUMMY_MARKER;
+ 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_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 = 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_soc_platform(struct ath_softc *sc)
+{
+ struct ath9k_platform_data *pdata = sc->dev->platform_data;
+ struct ath_hw *ah = sc->sc_ah;
+ int ret = 0;
+
+ if (!pdata)
+ return 0;
+
+ if (pdata->eeprom_name) {
+ ret = ath9k_eeprom_request(sc, pdata->eeprom_name);
+ if (ret)
+ return ret;
+ }
+
+ if (pdata->tx_gain_buffalo)
+ ah->config.tx_gain_buffalo = true;
+
+ return ret;
+}
+
+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.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;
+
+ if (!pdata || pdata->use_eeprom) {
+ 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;
+ ah->disable_2ghz = pdata->disable_2ghz;
+ ah->disable_5ghz = pdata->disable_5ghz;
+ if (!pdata->endian_check)
+ ah->ah_flags |= AH_NO_EEP_SWAP;
+ }
+
+ 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_soc_platform(sc);
+ if (ret)
+ return ret;
+
+ /*
+ * 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);
+ spin_lock_init(&sc->chan_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);
+
+ setup_timer(&sc->sleep_timer, ath_ps_full_sleep, (unsigned long)sc);
+ 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);
+
+ 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;
+
+ 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_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_fill_led_pin(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_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;
+}
+
+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) },
+};
+
+static const struct ieee80211_iface_limit wds_limits[] = {
+ { .max = 2048, .types = BIT(NL80211_IFTYPE_WDS) },
+};
+
+#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) },
+};
+
+static const struct ieee80211_iface_combination if_comb_multi[] = {
+ {
+ .limits = if_limits_multi,
+ .n_limits = ARRAY_SIZE(if_limits_multi),
+ .max_interfaces = 2,
+ .num_different_channels = 2,
+ .beacon_int_infra_match = true,
+ },
+};
+
+#endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */
+
+static const struct ieee80211_iface_limit if_dfs_limits[] = {
+ { .max = 1, .types = BIT(NL80211_IFTYPE_AP) |
+#ifdef CONFIG_MAC80211_MESH
+ BIT(NL80211_IFTYPE_MESH_POINT) |
+#endif
+ BIT(NL80211_IFTYPE_ADHOC) },
+};
+
+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 = wds_limits,
+ .n_limits = ARRAY_SIZE(wds_limits),
+ .max_interfaces = 2048,
+ .num_different_channels = 1,
+ .beacon_int_infra_match = true,
+ },
+#ifdef CONFIG_ATH9K_DFS_CERTIFIED
+ {
+ .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_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;
+
+ hw->flags |= IEEE80211_HW_QUEUE_CONTROL;
+ hw->queues = ATH9K_NUM_TX_QUEUES;
+ hw->offchannel_tx_hw_queue = hw->queues - 1;
+ hw->wiphy->interface_modes &= ~ BIT(NL80211_IFTYPE_WDS);
+ 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);
+
+ hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
+ IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
+ IEEE80211_HW_SIGNAL_DBM |
+ 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 (ath9k_ps_enable)
+ hw->flags |= IEEE80211_HW_SUPPORTS_PS;
+
+ 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 |
+ NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
+ NL80211_FEATURE_P2P_GO_CTWIN;
+
+ if (!config_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_WDS);
+
+ 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->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] =
+ &common->sbands[IEEE80211_BAND_2GHZ];
+ if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
+ hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
+ &common->sbands[IEEE80211_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);
+}
+
+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_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;
+ }
+
+ 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);
Code Review / kvmfornfv.git / blobdiff