--- /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.
+ */
+
+#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 */
Code Review / kvmfornfv.git / blobdiff