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- /*
- * 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.
- */
- #include "ath9k.h"
- /********************************/
- /* LED functions */
- /********************************/
- #ifdef CONFIG_MAC80211_LEDS
- static void ath_led_brightness(struct led_classdev *led_cdev,
- enum led_brightness brightness)
- {
- struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev);
- u32 val = (brightness == LED_OFF);
- if (sc->sc_ah->config.led_active_high)
- val = !val;
- ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, val);
- }
- void ath_deinit_leds(struct ath_softc *sc)
- {
- if (!sc->led_registered)
- return;
- ath_led_brightness(&sc->led_cdev, LED_OFF);
- led_classdev_unregister(&sc->led_cdev);
- }
- void ath_init_leds(struct ath_softc *sc)
- {
- int ret;
- if (AR_SREV_9100(sc->sc_ah))
- return;
- if (!ath9k_led_blink)
- sc->led_cdev.default_trigger =
- ieee80211_get_radio_led_name(sc->hw);
- snprintf(sc->led_name, sizeof(sc->led_name),
- "ath9k-%s", wiphy_name(sc->hw->wiphy));
- sc->led_cdev.name = sc->led_name;
- sc->led_cdev.brightness_set = ath_led_brightness;
- ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
- if (ret < 0)
- return;
- sc->led_registered = true;
- }
- void ath_fill_led_pin(struct ath_softc *sc)
- {
- struct ath_hw *ah = sc->sc_ah;
- if (AR_SREV_9100(ah))
- return;
- if (ah->led_pin >= 0) {
- if (!((1 << ah->led_pin) & AR_GPIO_OE_OUT_MASK))
- ath9k_hw_request_gpio(ah, ah->led_pin, "ath9k-led");
- return;
- }
- if (AR_SREV_9287(ah))
- ah->led_pin = ATH_LED_PIN_9287;
- else if (AR_SREV_9485(sc->sc_ah))
- ah->led_pin = ATH_LED_PIN_9485;
- else if (AR_SREV_9300(sc->sc_ah))
- ah->led_pin = ATH_LED_PIN_9300;
- else if (AR_SREV_9462(sc->sc_ah) || AR_SREV_9565(sc->sc_ah))
- ah->led_pin = ATH_LED_PIN_9462;
- else
- ah->led_pin = ATH_LED_PIN_DEF;
- /* Configure gpio 1 for output */
- ath9k_hw_cfg_output(ah, ah->led_pin, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
- /* LED off, active low */
- ath9k_hw_set_gpio(ah, ah->led_pin, (ah->config.led_active_high) ? 0 : 1);
- }
- #endif
- /*******************/
- /* Rfkill */
- /*******************/
- static bool ath_is_rfkill_set(struct ath_softc *sc)
- {
- struct ath_hw *ah = sc->sc_ah;
- bool is_blocked;
- ath9k_ps_wakeup(sc);
- is_blocked = ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
- ah->rfkill_polarity;
- ath9k_ps_restore(sc);
- return is_blocked;
- }
- void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
- {
- struct ath_softc *sc = hw->priv;
- bool blocked = !!ath_is_rfkill_set(sc);
- wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
- }
- void ath_start_rfkill_poll(struct ath_softc *sc)
- {
- struct ath_hw *ah = sc->sc_ah;
- if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
- wiphy_rfkill_start_polling(sc->hw->wiphy);
- }
- #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
- /******************/
- /* BTCOEX */
- /******************/
- /*
- * Detects if there is any priority bt traffic
- */
- static void ath_detect_bt_priority(struct ath_softc *sc)
- {
- struct ath_btcoex *btcoex = &sc->btcoex;
- struct ath_hw *ah = sc->sc_ah;
- if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio))
- btcoex->bt_priority_cnt++;
- if (time_after(jiffies, btcoex->bt_priority_time +
- msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
- clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
- clear_bit(BT_OP_SCAN, &btcoex->op_flags);
- /* Detect if colocated bt started scanning */
- if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
- ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
- "BT scan detected\n");
- set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
- set_bit(BT_OP_SCAN, &btcoex->op_flags);
- } else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
- ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
- "BT priority traffic detected\n");
- set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
- }
- btcoex->bt_priority_cnt = 0;
- btcoex->bt_priority_time = jiffies;
- }
- }
- static void ath_mci_ftp_adjust(struct ath_softc *sc)
- {
- struct ath_btcoex *btcoex = &sc->btcoex;
- struct ath_mci_profile *mci = &btcoex->mci;
- struct ath_hw *ah = sc->sc_ah;
- if (btcoex->bt_wait_time > ATH_BTCOEX_RX_WAIT_TIME) {
- if (ar9003_mci_state(ah, MCI_STATE_NEED_FTP_STOMP) &&
- (mci->num_pan || mci->num_other_acl))
- ah->btcoex_hw.mci.stomp_ftp =
- (sc->rx.num_pkts < ATH_BTCOEX_STOMP_FTP_THRESH);
- else
- ah->btcoex_hw.mci.stomp_ftp = false;
- btcoex->bt_wait_time = 0;
- sc->rx.num_pkts = 0;
- }
- }
- /*
- * This is the master bt coex timer which runs for every
- * 45ms, bt traffic will be given priority during 55% of this
- * period while wlan gets remaining 45%
- */
- static void ath_btcoex_period_timer(unsigned long data)
- {
- struct ath_softc *sc = (struct ath_softc *) data;
- struct ath_hw *ah = sc->sc_ah;
- struct ath_btcoex *btcoex = &sc->btcoex;
- enum ath_stomp_type stomp_type;
- u32 timer_period;
- unsigned long flags;
- spin_lock_irqsave(&sc->sc_pm_lock, flags);
- if (sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP) {
- btcoex->bt_wait_time += btcoex->btcoex_period;
- spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
- goto skip_hw_wakeup;
- }
- spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
- ath9k_ps_wakeup(sc);
- spin_lock_bh(&btcoex->btcoex_lock);
- if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI) {
- ath9k_mci_update_rssi(sc);
- ath_mci_ftp_adjust(sc);
- }
- if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
- ath_detect_bt_priority(sc);
- stomp_type = btcoex->bt_stomp_type;
- timer_period = btcoex->btcoex_no_stomp;
- if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) {
- if (test_bit(BT_OP_SCAN, &btcoex->op_flags)) {
- stomp_type = ATH_BTCOEX_STOMP_ALL;
- timer_period = btcoex->btscan_no_stomp;
- }
- } else if (btcoex->stomp_audio >= 5) {
- stomp_type = ATH_BTCOEX_STOMP_AUDIO;
- btcoex->stomp_audio = 0;
- }
- ath9k_hw_btcoex_bt_stomp(ah, stomp_type);
- ath9k_hw_btcoex_enable(ah);
- spin_unlock_bh(&btcoex->btcoex_lock);
- if (btcoex->btcoex_period != btcoex->btcoex_no_stomp)
- mod_timer(&btcoex->no_stomp_timer,
- jiffies + msecs_to_jiffies(timer_period));
- ath9k_ps_restore(sc);
- skip_hw_wakeup:
- mod_timer(&btcoex->period_timer,
- jiffies + msecs_to_jiffies(btcoex->btcoex_period));
- }
- /*
- * Generic tsf based hw timer which configures weight
- * registers to time slice between wlan and bt traffic
- */
- static void ath_btcoex_no_stomp_timer(unsigned long arg)
- {
- struct ath_softc *sc = (struct ath_softc *)arg;
- struct ath_hw *ah = sc->sc_ah;
- struct ath_btcoex *btcoex = &sc->btcoex;
- ath9k_ps_wakeup(sc);
- spin_lock_bh(&btcoex->btcoex_lock);
- if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW ||
- (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI) &&
- test_bit(BT_OP_SCAN, &btcoex->op_flags)))
- ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
- else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
- ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW);
- ath9k_hw_btcoex_enable(ah);
- spin_unlock_bh(&btcoex->btcoex_lock);
- ath9k_ps_restore(sc);
- }
- static void ath_init_btcoex_timer(struct ath_softc *sc)
- {
- struct ath_btcoex *btcoex = &sc->btcoex;
- btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD;
- btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
- btcoex->btcoex_period / 100;
- btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) *
- btcoex->btcoex_period / 100;
- btcoex->bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
- setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
- (unsigned long) sc);
- setup_timer(&btcoex->no_stomp_timer, ath_btcoex_no_stomp_timer,
- (unsigned long) sc);
- spin_lock_init(&btcoex->btcoex_lock);
- }
- /*
- * (Re)start btcoex timers
- */
- void ath9k_btcoex_timer_resume(struct ath_softc *sc)
- {
- struct ath_btcoex *btcoex = &sc->btcoex;
- struct ath_hw *ah = sc->sc_ah;
- if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_3WIRE &&
- ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI)
- return;
- ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex timers\n");
- /* make sure duty cycle timer is also stopped when resuming */
- del_timer_sync(&btcoex->no_stomp_timer);
- btcoex->bt_priority_cnt = 0;
- btcoex->bt_priority_time = jiffies;
- clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
- clear_bit(BT_OP_SCAN, &btcoex->op_flags);
- mod_timer(&btcoex->period_timer, jiffies);
- }
- /*
- * Pause btcoex timer and bt duty cycle timer
- */
- void ath9k_btcoex_timer_pause(struct ath_softc *sc)
- {
- struct ath_btcoex *btcoex = &sc->btcoex;
- struct ath_hw *ah = sc->sc_ah;
- if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_3WIRE &&
- ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI)
- return;
- ath_dbg(ath9k_hw_common(ah), BTCOEX, "Stopping btcoex timers\n");
- del_timer_sync(&btcoex->period_timer);
- del_timer_sync(&btcoex->no_stomp_timer);
- }
- void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc)
- {
- struct ath_btcoex *btcoex = &sc->btcoex;
- del_timer_sync(&btcoex->no_stomp_timer);
- }
- u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen)
- {
- struct ath_btcoex *btcoex = &sc->btcoex;
- struct ath_mci_profile *mci = &sc->btcoex.mci;
- u16 aggr_limit = 0;
- if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && mci->aggr_limit)
- aggr_limit = (max_4ms_framelen * mci->aggr_limit) >> 4;
- else if (test_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags))
- aggr_limit = min((max_4ms_framelen * 3) / 8,
- (u32)ATH_AMPDU_LIMIT_MAX);
- return aggr_limit;
- }
- void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status)
- {
- if (status & ATH9K_INT_MCI)
- ath_mci_intr(sc);
- }
- void ath9k_start_btcoex(struct ath_softc *sc)
- {
- struct ath_hw *ah = sc->sc_ah;
- if (ah->btcoex_hw.enabled ||
- ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
- return;
- if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
- ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
- AR_STOMP_LOW_WLAN_WGHT, 0);
- else
- ath9k_hw_btcoex_set_weight(ah, 0, 0,
- ATH_BTCOEX_STOMP_NONE);
- ath9k_hw_btcoex_enable(ah);
- ath9k_btcoex_timer_resume(sc);
- }
- void ath9k_stop_btcoex(struct ath_softc *sc)
- {
- struct ath_hw *ah = sc->sc_ah;
- if (!ah->btcoex_hw.enabled ||
- ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_NONE)
- return;
- ath9k_btcoex_timer_pause(sc);
- ath9k_hw_btcoex_disable(ah);
- if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
- ath_mci_flush_profile(&sc->btcoex.mci);
- }
- void ath9k_deinit_btcoex(struct ath_softc *sc)
- {
- struct ath_hw *ah = sc->sc_ah;
- if (ath9k_hw_mci_is_enabled(ah))
- ath_mci_cleanup(sc);
- }
- int ath9k_init_btcoex(struct ath_softc *sc)
- {
- struct ath_txq *txq;
- struct ath_hw *ah = sc->sc_ah;
- int r;
- ath9k_hw_btcoex_init_scheme(ah);
- switch (ath9k_hw_get_btcoex_scheme(sc->sc_ah)) {
- case ATH_BTCOEX_CFG_NONE:
- break;
- case ATH_BTCOEX_CFG_2WIRE:
- ath9k_hw_btcoex_init_2wire(sc->sc_ah);
- break;
- case ATH_BTCOEX_CFG_3WIRE:
- ath9k_hw_btcoex_init_3wire(sc->sc_ah);
- ath_init_btcoex_timer(sc);
- txq = sc->tx.txq_map[IEEE80211_AC_BE];
- ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum);
- break;
- case ATH_BTCOEX_CFG_MCI:
- ath_init_btcoex_timer(sc);
- sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE;
- INIT_LIST_HEAD(&sc->btcoex.mci.info);
- ath9k_hw_btcoex_init_mci(ah);
- r = ath_mci_setup(sc);
- if (r)
- return r;
- break;
- default:
- WARN_ON(1);
- break;
- }
- return 0;
- }
- static int ath9k_dump_mci_btcoex(struct ath_softc *sc, u8 *buf, u32 size)
- {
- struct ath_btcoex *btcoex = &sc->btcoex;
- struct ath_mci_profile *mci = &btcoex->mci;
- struct ath_hw *ah = sc->sc_ah;
- struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
- u32 len = 0;
- int i;
- ATH_DUMP_BTCOEX("Total BT profiles", NUM_PROF(mci));
- ATH_DUMP_BTCOEX("MGMT", mci->num_mgmt);
- ATH_DUMP_BTCOEX("SCO", mci->num_sco);
- ATH_DUMP_BTCOEX("A2DP", mci->num_a2dp);
- ATH_DUMP_BTCOEX("HID", mci->num_hid);
- ATH_DUMP_BTCOEX("PAN", mci->num_pan);
- ATH_DUMP_BTCOEX("ACL", mci->num_other_acl);
- ATH_DUMP_BTCOEX("BDR", mci->num_bdr);
- ATH_DUMP_BTCOEX("Aggr. Limit", mci->aggr_limit);
- ATH_DUMP_BTCOEX("Stomp Type", btcoex->bt_stomp_type);
- ATH_DUMP_BTCOEX("BTCoex Period (msec)", btcoex->btcoex_period);
- ATH_DUMP_BTCOEX("Duty Cycle", btcoex->duty_cycle);
- ATH_DUMP_BTCOEX("BT Wait time", btcoex->bt_wait_time);
- ATH_DUMP_BTCOEX("Concurrent Tx", btcoex_hw->mci.concur_tx);
- ATH_DUMP_BTCOEX("Concurrent RSSI cnt", btcoex->rssi_count);
- len += scnprintf(buf + len, size - len, "BT Weights: ");
- for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
- len += scnprintf(buf + len, size - len, "%08x ",
- btcoex_hw->bt_weight[i]);
- len += scnprintf(buf + len, size - len, "\n");
- len += scnprintf(buf + len, size - len, "WLAN Weights: ");
- for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
- len += scnprintf(buf + len, size - len, "%08x ",
- btcoex_hw->wlan_weight[i]);
- len += scnprintf(buf + len, size - len, "\n");
- len += scnprintf(buf + len, size - len, "Tx Priorities: ");
- for (i = 0; i < ATH_BTCOEX_STOMP_MAX; i++)
- len += scnprintf(buf + len, size - len, "%08x ",
- btcoex_hw->tx_prio[i]);
- len += scnprintf(buf + len, size - len, "\n");
- return len;
- }
- static int ath9k_dump_legacy_btcoex(struct ath_softc *sc, u8 *buf, u32 size)
- {
- struct ath_btcoex *btcoex = &sc->btcoex;
- u32 len = 0;
- ATH_DUMP_BTCOEX("Stomp Type", btcoex->bt_stomp_type);
- ATH_DUMP_BTCOEX("BTCoex Period (msec)", btcoex->btcoex_period);
- ATH_DUMP_BTCOEX("Duty Cycle", btcoex->duty_cycle);
- ATH_DUMP_BTCOEX("BT Wait time", btcoex->bt_wait_time);
- return len;
- }
- int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size)
- {
- if (ath9k_hw_mci_is_enabled(sc->sc_ah))
- return ath9k_dump_mci_btcoex(sc, buf, size);
- else
- return ath9k_dump_legacy_btcoex(sc, buf, size);
- }
- #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */
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