| /* |
| * 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); |
| ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, (brightness == LED_OFF)); |
| } |
| |
| 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 (!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) || (ah->led_pin >= 0)) |
| 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, 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 ath9k_gen_timer_start(struct ath_hw *ah, |
| struct ath_gen_timer *timer, |
| u32 trig_timeout, |
| u32 timer_period) |
| { |
| ath9k_hw_gen_timer_start(ah, timer, trig_timeout, timer_period); |
| |
| if ((ah->imask & ATH9K_INT_GENTIMER) == 0) { |
| ath9k_hw_disable_interrupts(ah); |
| ah->imask |= ATH9K_INT_GENTIMER; |
| ath9k_hw_set_interrupts(ah); |
| ath9k_hw_enable_interrupts(ah); |
| } |
| } |
| |
| static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer) |
| { |
| struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers; |
| |
| ath9k_hw_gen_timer_stop(ah, timer); |
| |
| /* if no timer is enabled, turn off interrupt mask */ |
| if (timer_table->timer_mask.val == 0) { |
| ath9k_hw_disable_interrupts(ah); |
| ah->imask &= ~ATH9K_INT_GENTIMER; |
| ath9k_hw_set_interrupts(ah); |
| ath9k_hw_enable_interrupts(ah); |
| } |
| } |
| |
| 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_mci_update_rssi(sc); |
| |
| ath9k_ps_wakeup(sc); |
| |
| if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) |
| ath_detect_bt_priority(sc); |
| |
| if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI) |
| ath_mci_ftp_adjust(sc); |
| |
| spin_lock_bh(&btcoex->btcoex_lock); |
| |
| 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; |
| struct ath_common *common = ath9k_hw_common(ah); |
| |
| ath_dbg(common, BTCOEX, "no stomp timer running\n"); |
| |
| 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 int 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; |
| |
| 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); |
| |
| return 0; |
| } |
| |
| /* |
| * (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; |
| |
| 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; |
| |
| 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) |
| { |
| struct ath_hw *ah = sc->sc_ah; |
| |
| if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) |
| if (status & ATH9K_INT_GENTIMER) |
| ath_gen_timer_isr(sc->sc_ah); |
| |
| 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 ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) && |
| !ah->btcoex_hw.enabled) { |
| if (!(sc->sc_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); |
| |
| if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) |
| 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) { |
| if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) |
| ath9k_btcoex_timer_pause(sc); |
| ath9k_hw_btcoex_disable(ah); |
| if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) |
| 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); |
| r = ath_init_btcoex_timer(sc); |
| if (r) |
| return -1; |
| txq = sc->tx.txq_map[IEEE80211_AC_BE]; |
| ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum); |
| sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW; |
| if (ath9k_hw_mci_is_enabled(ah)) { |
| sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE; |
| INIT_LIST_HEAD(&sc->btcoex.mci.info); |
| |
| r = ath_mci_setup(sc); |
| if (r) |
| return r; |
| |
| ath9k_hw_btcoex_init_mci(ah); |
| } |
| |
| 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 */ |