522 lines
14 KiB
C
522 lines
14 KiB
C
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/*
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* Copyright (c) 2008-2011 Atheros Communications Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "ath9k.h"
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/********************************/
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/* LED functions */
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/********************************/
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#ifdef CONFIG_MAC80211_LEDS
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static void ath_fill_led_pin(struct ath_softc *sc)
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{
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struct ath_hw *ah = sc->sc_ah;
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/* Set default led pin if invalid */
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if (ah->led_pin < 0) {
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if (AR_SREV_9287(ah))
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ah->led_pin = ATH_LED_PIN_9287;
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else if (AR_SREV_9485(ah))
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ah->led_pin = ATH_LED_PIN_9485;
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else if (AR_SREV_9300(ah))
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ah->led_pin = ATH_LED_PIN_9300;
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else if (AR_SREV_9462(ah) || AR_SREV_9565(ah))
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ah->led_pin = ATH_LED_PIN_9462;
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else
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ah->led_pin = ATH_LED_PIN_DEF;
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}
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/* Configure gpio for output */
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ath9k_hw_gpio_request_out(ah, ah->led_pin, "ath9k-led",
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AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
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/* LED off, active low */
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ath9k_hw_set_gpio(ah, ah->led_pin, ah->config.led_active_high ? 0 : 1);
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}
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static void ath_led_brightness(struct led_classdev *led_cdev,
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enum led_brightness brightness)
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{
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struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev);
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u32 val = (brightness == LED_OFF);
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if (sc->sc_ah->config.led_active_high)
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val = !val;
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ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, val);
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}
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void ath_deinit_leds(struct ath_softc *sc)
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{
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if (!sc->led_registered)
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return;
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ath_led_brightness(&sc->led_cdev, LED_OFF);
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led_classdev_unregister(&sc->led_cdev);
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ath9k_hw_gpio_free(sc->sc_ah, sc->sc_ah->led_pin);
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}
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void ath_init_leds(struct ath_softc *sc)
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{
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int ret;
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if (AR_SREV_9100(sc->sc_ah))
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return;
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ath_fill_led_pin(sc);
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if (!ath9k_led_blink)
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sc->led_cdev.default_trigger =
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ieee80211_get_radio_led_name(sc->hw);
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snprintf(sc->led_name, sizeof(sc->led_name),
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"ath9k-%s", wiphy_name(sc->hw->wiphy));
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sc->led_cdev.name = sc->led_name;
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sc->led_cdev.brightness_set = ath_led_brightness;
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ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
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if (ret < 0)
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return;
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sc->led_registered = true;
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}
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#endif
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/*******************/
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/* Rfkill */
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/*******************/
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static bool ath_is_rfkill_set(struct ath_softc *sc)
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{
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struct ath_hw *ah = sc->sc_ah;
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bool is_blocked;
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ath9k_ps_wakeup(sc);
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is_blocked = ath9k_hw_gpio_get(ah, ah->rfkill_gpio) ==
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ah->rfkill_polarity;
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ath9k_ps_restore(sc);
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return is_blocked;
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}
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void ath9k_rfkill_poll_state(struct ieee80211_hw *hw)
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{
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struct ath_softc *sc = hw->priv;
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bool blocked = !!ath_is_rfkill_set(sc);
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wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
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}
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void ath_start_rfkill_poll(struct ath_softc *sc)
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{
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struct ath_hw *ah = sc->sc_ah;
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if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
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wiphy_rfkill_start_polling(sc->hw->wiphy);
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}
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#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
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/******************/
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/* BTCOEX */
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/******************/
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/*
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* Detects if there is any priority bt traffic
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*/
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static void ath_detect_bt_priority(struct ath_softc *sc)
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{
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struct ath_btcoex *btcoex = &sc->btcoex;
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struct ath_hw *ah = sc->sc_ah;
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if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio))
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btcoex->bt_priority_cnt++;
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if (time_after(jiffies, btcoex->bt_priority_time +
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msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
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clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
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clear_bit(BT_OP_SCAN, &btcoex->op_flags);
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/* Detect if colocated bt started scanning */
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if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
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ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
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"BT scan detected\n");
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set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
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set_bit(BT_OP_SCAN, &btcoex->op_flags);
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} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
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ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX,
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"BT priority traffic detected\n");
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set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
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}
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btcoex->bt_priority_cnt = 0;
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btcoex->bt_priority_time = jiffies;
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}
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}
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static void ath_mci_ftp_adjust(struct ath_softc *sc)
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{
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struct ath_btcoex *btcoex = &sc->btcoex;
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struct ath_mci_profile *mci = &btcoex->mci;
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struct ath_hw *ah = sc->sc_ah;
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if (btcoex->bt_wait_time > ATH_BTCOEX_RX_WAIT_TIME) {
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if (ar9003_mci_state(ah, MCI_STATE_NEED_FTP_STOMP) &&
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(mci->num_pan || mci->num_other_acl))
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ah->btcoex_hw.mci.stomp_ftp =
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(sc->rx.num_pkts < ATH_BTCOEX_STOMP_FTP_THRESH);
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else
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ah->btcoex_hw.mci.stomp_ftp = false;
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btcoex->bt_wait_time = 0;
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sc->rx.num_pkts = 0;
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}
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}
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/*
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* This is the master bt coex timer which runs for every
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* 45ms, bt traffic will be given priority during 55% of this
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* period while wlan gets remaining 45%
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*/
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static void ath_btcoex_period_timer(unsigned long data)
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{
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struct ath_softc *sc = (struct ath_softc *) data;
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struct ath_hw *ah = sc->sc_ah;
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struct ath_btcoex *btcoex = &sc->btcoex;
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enum ath_stomp_type stomp_type;
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u32 timer_period;
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unsigned long flags;
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spin_lock_irqsave(&sc->sc_pm_lock, flags);
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if (sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP) {
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btcoex->bt_wait_time += btcoex->btcoex_period;
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spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
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goto skip_hw_wakeup;
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}
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spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
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ath9k_ps_wakeup(sc);
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spin_lock_bh(&btcoex->btcoex_lock);
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if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI) {
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ath9k_mci_update_rssi(sc);
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ath_mci_ftp_adjust(sc);
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}
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if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI))
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ath_detect_bt_priority(sc);
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stomp_type = btcoex->bt_stomp_type;
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timer_period = btcoex->btcoex_no_stomp;
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if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) {
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if (test_bit(BT_OP_SCAN, &btcoex->op_flags)) {
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stomp_type = ATH_BTCOEX_STOMP_ALL;
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timer_period = btcoex->btscan_no_stomp;
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}
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} else if (btcoex->stomp_audio >= 5) {
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stomp_type = ATH_BTCOEX_STOMP_AUDIO;
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btcoex->stomp_audio = 0;
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}
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ath9k_hw_btcoex_bt_stomp(ah, stomp_type);
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ath9k_hw_btcoex_enable(ah);
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spin_unlock_bh(&btcoex->btcoex_lock);
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if (btcoex->btcoex_period != btcoex->btcoex_no_stomp)
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mod_timer(&btcoex->no_stomp_timer,
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jiffies + msecs_to_jiffies(timer_period));
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ath9k_ps_restore(sc);
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skip_hw_wakeup:
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mod_timer(&btcoex->period_timer,
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jiffies + msecs_to_jiffies(btcoex->btcoex_period));
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}
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/*
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* Generic tsf based hw timer which configures weight
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* registers to time slice between wlan and bt traffic
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*/
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static void ath_btcoex_no_stomp_timer(unsigned long arg)
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{
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struct ath_softc *sc = (struct ath_softc *)arg;
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struct ath_hw *ah = sc->sc_ah;
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struct ath_btcoex *btcoex = &sc->btcoex;
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ath9k_ps_wakeup(sc);
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spin_lock_bh(&btcoex->btcoex_lock);
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if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW ||
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(!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI) &&
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test_bit(BT_OP_SCAN, &btcoex->op_flags)))
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ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
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else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
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ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW);
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ath9k_hw_btcoex_enable(ah);
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spin_unlock_bh(&btcoex->btcoex_lock);
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ath9k_ps_restore(sc);
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}
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static void ath_init_btcoex_timer(struct ath_softc *sc)
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{
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struct ath_btcoex *btcoex = &sc->btcoex;
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btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD;
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btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
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btcoex->btcoex_period / 100;
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btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) *
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btcoex->btcoex_period / 100;
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btcoex->bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
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setup_timer(&btcoex->period_timer, ath_btcoex_period_timer,
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(unsigned long) sc);
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setup_timer(&btcoex->no_stomp_timer, ath_btcoex_no_stomp_timer,
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(unsigned long) sc);
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spin_lock_init(&btcoex->btcoex_lock);
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}
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/*
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* (Re)start btcoex timers
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*/
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void ath9k_btcoex_timer_resume(struct ath_softc *sc)
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{
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struct ath_btcoex *btcoex = &sc->btcoex;
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struct ath_hw *ah = sc->sc_ah;
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if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_3WIRE &&
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ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI)
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return;
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ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex timers\n");
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/* make sure duty cycle timer is also stopped when resuming */
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del_timer_sync(&btcoex->no_stomp_timer);
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btcoex->bt_priority_cnt = 0;
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btcoex->bt_priority_time = jiffies;
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clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags);
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clear_bit(BT_OP_SCAN, &btcoex->op_flags);
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mod_timer(&btcoex->period_timer, jiffies);
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}
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/*
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* Pause btcoex timer and bt duty cycle timer
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*/
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void ath9k_btcoex_timer_pause(struct ath_softc *sc)
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{
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struct ath_btcoex *btcoex = &sc->btcoex;
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struct ath_hw *ah = sc->sc_ah;
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if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_3WIRE &&
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ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI)
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return;
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ath_dbg(ath9k_hw_common(ah), BTCOEX, "Stopping btcoex timers\n");
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del_timer_sync(&btcoex->period_timer);
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del_timer_sync(&btcoex->no_stomp_timer);
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}
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void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc)
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|
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{
|
||
|
|
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);
|
||
|
|
else {
|
||
|
|
enum ath_btcoex_scheme scheme = ath9k_hw_get_btcoex_scheme(ah);
|
||
|
|
|
||
|
|
if (scheme == ATH_BTCOEX_CFG_2WIRE ||
|
||
|
|
scheme == ATH_BTCOEX_CFG_3WIRE)
|
||
|
|
ath9k_hw_btcoex_deinit(sc->sc_ah);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
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 */
|