diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/wow.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/wow.c | 588 |
1 files changed, 263 insertions, 325 deletions
diff --git a/drivers/net/wireless/ath/ath9k/wow.c b/drivers/net/wireless/ath/ath9k/wow.c index 81c88dd606d..1b3230fa365 100644 --- a/drivers/net/wireless/ath/ath9k/wow.c +++ b/drivers/net/wireless/ath/ath9k/wow.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2012 Qualcomm Atheros, Inc. + * Copyright (c) 2013 Qualcomm Atheros, 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 @@ -14,409 +14,347 @@ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ -#include <linux/export.h> #include "ath9k.h" -#include "reg.h" -#include "hw-ops.h" -const char *ath9k_hw_wow_event_to_string(u32 wow_event) -{ - if (wow_event & AH_WOW_MAGIC_PATTERN_EN) - return "Magic pattern"; - if (wow_event & AH_WOW_USER_PATTERN_EN) - return "User pattern"; - if (wow_event & AH_WOW_LINK_CHANGE) - return "Link change"; - if (wow_event & AH_WOW_BEACON_MISS) - return "Beacon miss"; - - return "unknown reason"; -} -EXPORT_SYMBOL(ath9k_hw_wow_event_to_string); +static const struct wiphy_wowlan_support ath9k_wowlan_support = { + .flags = WIPHY_WOWLAN_MAGIC_PKT | WIPHY_WOWLAN_DISCONNECT, + .n_patterns = MAX_NUM_USER_PATTERN, + .pattern_min_len = 1, + .pattern_max_len = MAX_PATTERN_SIZE, +}; -static void ath9k_hw_set_powermode_wow_sleep(struct ath_hw *ah) +static void ath9k_wow_map_triggers(struct ath_softc *sc, + struct cfg80211_wowlan *wowlan, + u32 *wow_triggers) { - struct ath_common *common = ath9k_hw_common(ah); + if (wowlan->disconnect) + *wow_triggers |= AH_WOW_LINK_CHANGE | + AH_WOW_BEACON_MISS; + if (wowlan->magic_pkt) + *wow_triggers |= AH_WOW_MAGIC_PATTERN_EN; - REG_SET_BIT(ah, AR_STA_ID1, AR_STA_ID1_PWR_SAV); + if (wowlan->n_patterns) + *wow_triggers |= AH_WOW_USER_PATTERN_EN; - /* set rx disable bit */ - REG_WRITE(ah, AR_CR, AR_CR_RXD); - - if (!ath9k_hw_wait(ah, AR_CR, AR_CR_RXE, 0, AH_WAIT_TIMEOUT)) { - ath_err(common, "Failed to stop Rx DMA in 10ms AR_CR=0x%08x AR_DIAG_SW=0x%08x\n", - REG_READ(ah, AR_CR), REG_READ(ah, AR_DIAG_SW)); - return; - } + sc->wow_enabled = *wow_triggers; - REG_WRITE(ah, AR_RTC_FORCE_WAKE, AR_RTC_FORCE_WAKE_ON_INT); } -static void ath9k_wow_create_keep_alive_pattern(struct ath_hw *ah) +static void ath9k_wow_add_disassoc_deauth_pattern(struct ath_softc *sc) { + struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); - u8 sta_mac_addr[ETH_ALEN], ap_mac_addr[ETH_ALEN]; - u32 ctl[13] = {0}; - u32 data_word[KAL_NUM_DATA_WORDS]; - u8 i; - u32 wow_ka_data_word0; - - memcpy(sta_mac_addr, common->macaddr, ETH_ALEN); - memcpy(ap_mac_addr, common->curbssid, ETH_ALEN); - - /* set the transmit buffer */ - ctl[0] = (KAL_FRAME_LEN | (MAX_RATE_POWER << 16)); - ctl[1] = 0; - ctl[3] = 0xb; /* OFDM_6M hardware value for this rate */ - ctl[4] = 0; - ctl[7] = (ah->txchainmask) << 2; - ctl[2] = 0xf << 16; /* tx_tries 0 */ - - for (i = 0; i < KAL_NUM_DESC_WORDS; i++) - REG_WRITE(ah, (AR_WOW_KA_DESC_WORD2 + i * 4), ctl[i]); - - REG_WRITE(ah, (AR_WOW_KA_DESC_WORD2 + i * 4), ctl[i]); - - data_word[0] = (KAL_FRAME_TYPE << 2) | (KAL_FRAME_SUB_TYPE << 4) | - (KAL_TO_DS << 8) | (KAL_DURATION_ID << 16); - data_word[1] = (ap_mac_addr[3] << 24) | (ap_mac_addr[2] << 16) | - (ap_mac_addr[1] << 8) | (ap_mac_addr[0]); - data_word[2] = (sta_mac_addr[1] << 24) | (sta_mac_addr[0] << 16) | - (ap_mac_addr[5] << 8) | (ap_mac_addr[4]); - data_word[3] = (sta_mac_addr[5] << 24) | (sta_mac_addr[4] << 16) | - (sta_mac_addr[3] << 8) | (sta_mac_addr[2]); - data_word[4] = (ap_mac_addr[3] << 24) | (ap_mac_addr[2] << 16) | - (ap_mac_addr[1] << 8) | (ap_mac_addr[0]); - data_word[5] = (ap_mac_addr[5] << 8) | (ap_mac_addr[4]); - - if (AR_SREV_9462_20(ah)) { - /* AR9462 2.0 has an extra descriptor word (time based - * discard) compared to other chips */ - REG_WRITE(ah, (AR_WOW_KA_DESC_WORD2 + (12 * 4)), 0); - wow_ka_data_word0 = AR_WOW_TXBUF(13); - } else { - wow_ka_data_word0 = AR_WOW_TXBUF(12); - } - - for (i = 0; i < KAL_NUM_DATA_WORDS; i++) - REG_WRITE(ah, (wow_ka_data_word0 + i*4), data_word[i]); - -} - -void ath9k_hw_wow_apply_pattern(struct ath_hw *ah, u8 *user_pattern, - u8 *user_mask, int pattern_count, - int pattern_len) -{ - int i; - u32 pattern_val, mask_val; - u32 set, clr; + int pattern_count = 0; + int i, byte_cnt; + u8 dis_deauth_pattern[MAX_PATTERN_SIZE]; + u8 dis_deauth_mask[MAX_PATTERN_SIZE]; - /* FIXME: should check count by querying the hardware capability */ - if (pattern_count >= MAX_NUM_PATTERN) - return; - - REG_SET_BIT(ah, AR_WOW_PATTERN, BIT(pattern_count)); - - /* set the registers for pattern */ - for (i = 0; i < MAX_PATTERN_SIZE; i += 4) { - memcpy(&pattern_val, user_pattern, 4); - REG_WRITE(ah, (AR_WOW_TB_PATTERN(pattern_count) + i), - pattern_val); - user_pattern += 4; - } - - /* set the registers for mask */ - for (i = 0; i < MAX_PATTERN_MASK_SIZE; i += 4) { - memcpy(&mask_val, user_mask, 4); - REG_WRITE(ah, (AR_WOW_TB_MASK(pattern_count) + i), mask_val); - user_mask += 4; - } + memset(dis_deauth_pattern, 0, MAX_PATTERN_SIZE); + memset(dis_deauth_mask, 0, MAX_PATTERN_SIZE); - /* set the pattern length to be matched + /* + * Create Dissassociate / Deauthenticate packet filter + * + * 2 bytes 2 byte 6 bytes 6 bytes 6 bytes + * +--------------+----------+---------+--------+--------+---- + * + Frame Control+ Duration + DA + SA + BSSID + + * +--------------+----------+---------+--------+--------+---- * - * AR_WOW_LENGTH1_REG1 - * bit 31:24 pattern 0 length - * bit 23:16 pattern 1 length - * bit 15:8 pattern 2 length - * bit 7:0 pattern 3 length + * The above is the management frame format for disassociate/ + * deauthenticate pattern, from this we need to match the first byte + * of 'Frame Control' and DA, SA, and BSSID fields + * (skipping 2nd byte of FC and Duration feild. * - * AR_WOW_LENGTH1_REG2 - * bit 31:24 pattern 4 length - * bit 23:16 pattern 5 length - * bit 15:8 pattern 6 length - * bit 7:0 pattern 7 length + * Disassociate pattern + * -------------------- + * Frame control = 00 00 1010 + * DA, SA, BSSID = x:x:x:x:x:x + * Pattern will be A0000000 | x:x:x:x:x:x | x:x:x:x:x:x + * | x:x:x:x:x:x -- 22 bytes * - * the below logic writes out the new - * pattern length for the corresponding - * pattern_count, while masking out the - * other fields + * Deauthenticate pattern + * ---------------------- + * Frame control = 00 00 1100 + * DA, SA, BSSID = x:x:x:x:x:x + * Pattern will be C0000000 | x:x:x:x:x:x | x:x:x:x:x:x + * | x:x:x:x:x:x -- 22 bytes */ - ah->wow_event_mask |= BIT(pattern_count + AR_WOW_PAT_FOUND_SHIFT); - - if (pattern_count < 4) { - /* Pattern 0-3 uses AR_WOW_LENGTH1 register */ - set = (pattern_len & AR_WOW_LENGTH_MAX) << - AR_WOW_LEN1_SHIFT(pattern_count); - clr = AR_WOW_LENGTH1_MASK(pattern_count); - REG_RMW(ah, AR_WOW_LENGTH1, set, clr); - } else { - /* Pattern 4-7 uses AR_WOW_LENGTH2 register */ - set = (pattern_len & AR_WOW_LENGTH_MAX) << - AR_WOW_LEN2_SHIFT(pattern_count); - clr = AR_WOW_LENGTH2_MASK(pattern_count); - REG_RMW(ah, AR_WOW_LENGTH2, set, clr); - } + /* Create Disassociate Pattern first */ -} -EXPORT_SYMBOL(ath9k_hw_wow_apply_pattern); + byte_cnt = 0; -u32 ath9k_hw_wow_wakeup(struct ath_hw *ah) -{ - u32 wow_status = 0; - u32 val = 0, rval; + /* Fill out the mask with all FF's */ - /* - * read the WoW status register to know - * the wakeup reason - */ - rval = REG_READ(ah, AR_WOW_PATTERN); - val = AR_WOW_STATUS(rval); + for (i = 0; i < MAX_PATTERN_MASK_SIZE; i++) + dis_deauth_mask[i] = 0xff; - /* - * mask only the WoW events that we have enabled. Sometimes - * we have spurious WoW events from the AR_WOW_PATTERN - * register. This mask will clean it up. - */ + /* copy the first byte of frame control field */ + dis_deauth_pattern[byte_cnt] = 0xa0; + byte_cnt++; - val &= ah->wow_event_mask; - - if (val) { - if (val & AR_WOW_MAGIC_PAT_FOUND) - wow_status |= AH_WOW_MAGIC_PATTERN_EN; - if (AR_WOW_PATTERN_FOUND(val)) - wow_status |= AH_WOW_USER_PATTERN_EN; - if (val & AR_WOW_KEEP_ALIVE_FAIL) - wow_status |= AH_WOW_LINK_CHANGE; - if (val & AR_WOW_BEACON_FAIL) - wow_status |= AH_WOW_BEACON_MISS; - } + /* skip 2nd byte of frame control and Duration field */ + byte_cnt += 3; /* - * set and clear WOW_PME_CLEAR registers for the chip to - * generate next wow signal. - * disable D3 before accessing other registers ? + * need not match the destination mac address, it can be a broadcast + * mac address or an unicast to this station */ + byte_cnt += 6; - /* do we need to check the bit value 0x01000000 (7-10) ?? */ - REG_RMW(ah, AR_PCIE_PM_CTRL, AR_PMCTRL_WOW_PME_CLR, - AR_PMCTRL_PWR_STATE_D1D3); + /* copy the source mac address */ + memcpy((dis_deauth_pattern + byte_cnt), common->curbssid, ETH_ALEN); - /* - * clear all events - */ - REG_WRITE(ah, AR_WOW_PATTERN, - AR_WOW_CLEAR_EVENTS(REG_READ(ah, AR_WOW_PATTERN))); + byte_cnt += 6; - /* - * restore the beacon threshold to init value - */ - REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR); + /* copy the bssid, its same as the source mac address */ + + memcpy((dis_deauth_pattern + byte_cnt), common->curbssid, ETH_ALEN); + + /* Create Disassociate pattern mask */ + + dis_deauth_mask[0] = 0xfe; + dis_deauth_mask[1] = 0x03; + dis_deauth_mask[2] = 0xc0; + + ath_dbg(common, WOW, "Adding disassoc/deauth patterns for WoW\n"); + ath9k_hw_wow_apply_pattern(ah, dis_deauth_pattern, dis_deauth_mask, + pattern_count, byte_cnt); + + pattern_count++; /* - * Restore the way the PCI-E reset, Power-On-Reset, external - * PCIE_POR_SHORT pins are tied to its original value. - * Previously just before WoW sleep, we untie the PCI-E - * reset to our Chip's Power On Reset so that any PCI-E - * reset from the bus will not reset our chip + * for de-authenticate pattern, only the first byte of the frame + * control field gets changed from 0xA0 to 0xC0 */ - if (ah->is_pciexpress) - ath9k_hw_configpcipowersave(ah, false); + dis_deauth_pattern[0] = 0xC0; - ah->wow_event_mask = 0; + ath9k_hw_wow_apply_pattern(ah, dis_deauth_pattern, dis_deauth_mask, + pattern_count, byte_cnt); - return wow_status; } -EXPORT_SYMBOL(ath9k_hw_wow_wakeup); -void ath9k_hw_wow_enable(struct ath_hw *ah, u32 pattern_enable) +static void ath9k_wow_add_pattern(struct ath_softc *sc, + struct cfg80211_wowlan *wowlan) { - u32 wow_event_mask; - u32 set, clr; + struct ath_hw *ah = sc->sc_ah; + struct ath9k_wow_pattern *wow_pattern = NULL; + struct cfg80211_pkt_pattern *patterns = wowlan->patterns; + int mask_len; + s8 i = 0; - /* - * wow_event_mask is a mask to the AR_WOW_PATTERN register to - * indicate which WoW events we have enabled. The WoW events - * are from the 'pattern_enable' in this function and - * 'pattern_count' of ath9k_hw_wow_apply_pattern() - */ - wow_event_mask = ah->wow_event_mask; + if (!wowlan->n_patterns) + return; /* - * Untie Power-on-Reset from the PCI-E-Reset. When we are in - * WOW sleep, we do want the Reset from the PCI-E to disturb - * our hw state + * Add the new user configured patterns */ - if (ah->is_pciexpress) { + for (i = 0; i < wowlan->n_patterns; i++) { + + wow_pattern = kzalloc(sizeof(*wow_pattern), GFP_KERNEL); + + if (!wow_pattern) + return; + + /* + * TODO: convert the generic user space pattern to + * appropriate chip specific/802.11 pattern. + */ + + mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); + memset(wow_pattern->pattern_bytes, 0, MAX_PATTERN_SIZE); + memset(wow_pattern->mask_bytes, 0, MAX_PATTERN_SIZE); + memcpy(wow_pattern->pattern_bytes, patterns[i].pattern, + patterns[i].pattern_len); + memcpy(wow_pattern->mask_bytes, patterns[i].mask, mask_len); + wow_pattern->pattern_len = patterns[i].pattern_len; + /* - * we need to untie the internal POR (power-on-reset) - * to the external PCI-E reset. We also need to tie - * the PCI-E Phy reset to the PCI-E reset. + * just need to take care of deauth and disssoc pattern, + * make sure we don't overwrite them. */ - set = AR_WA_RESET_EN | AR_WA_POR_SHORT; - clr = AR_WA_UNTIE_RESET_EN | AR_WA_D3_L1_DISABLE; - REG_RMW(ah, AR_WA, set, clr); + + ath9k_hw_wow_apply_pattern(ah, wow_pattern->pattern_bytes, + wow_pattern->mask_bytes, + i + 2, + wow_pattern->pattern_len); + kfree(wow_pattern); + } - /* - * set the power states appropriately and enable PME - */ - set = AR_PMCTRL_HOST_PME_EN | AR_PMCTRL_PWR_PM_CTRL_ENA | - AR_PMCTRL_AUX_PWR_DET | AR_PMCTRL_WOW_PME_CLR; +} - /* - * set and clear WOW_PME_CLEAR registers for the chip - * to generate next wow signal. - */ - REG_SET_BIT(ah, AR_PCIE_PM_CTRL, set); - clr = AR_PMCTRL_WOW_PME_CLR; - REG_CLR_BIT(ah, AR_PCIE_PM_CTRL, clr); +int ath9k_suspend(struct ieee80211_hw *hw, + struct cfg80211_wowlan *wowlan) +{ + struct ath_softc *sc = hw->priv; + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); + u32 wow_triggers_enabled = 0; + int ret = 0; - /* - * Setup for: - * - beacon misses - * - magic pattern - * - keep alive timeout - * - pattern matching - */ + mutex_lock(&sc->mutex); - /* - * Program default values for pattern backoff, aifs/slot/KAL count, - * beacon miss timeout, KAL timeout, etc. - */ - set = AR_WOW_BACK_OFF_SHIFT(AR_WOW_PAT_BACKOFF); - REG_SET_BIT(ah, AR_WOW_PATTERN, set); + ath_cancel_work(sc); + ath_stop_ani(sc); - set = AR_WOW_AIFS_CNT(AR_WOW_CNT_AIFS_CNT) | - AR_WOW_SLOT_CNT(AR_WOW_CNT_SLOT_CNT) | - AR_WOW_KEEP_ALIVE_CNT(AR_WOW_CNT_KA_CNT); - REG_SET_BIT(ah, AR_WOW_COUNT, set); + if (test_bit(SC_OP_INVALID, &sc->sc_flags)) { + ath_dbg(common, ANY, "Device not present\n"); + ret = -EINVAL; + goto fail_wow; + } - if (pattern_enable & AH_WOW_BEACON_MISS) - set = AR_WOW_BEACON_TIMO; - /* We are not using beacon miss, program a large value */ - else - set = AR_WOW_BEACON_TIMO_MAX; + if (WARN_ON(!wowlan)) { + ath_dbg(common, WOW, "None of the WoW triggers enabled\n"); + ret = -EINVAL; + goto fail_wow; + } - REG_WRITE(ah, AR_WOW_BCN_TIMO, set); + if (!device_can_wakeup(sc->dev)) { + ath_dbg(common, WOW, "device_can_wakeup failed, WoW is not enabled\n"); + ret = 1; + goto fail_wow; + } /* - * Keep alive timo in ms except AR9280 + * none of the sta vifs are associated + * and we are not currently handling multivif + * cases, for instance we have to seperately + * configure 'keep alive frame' for each + * STA. */ - if (!pattern_enable) - set = AR_WOW_KEEP_ALIVE_NEVER; - else - set = KAL_TIMEOUT * 32; - REG_WRITE(ah, AR_WOW_KEEP_ALIVE_TIMO, set); + if (!test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) { + ath_dbg(common, WOW, "None of the STA vifs are associated\n"); + ret = 1; + goto fail_wow; + } + + if (sc->nvifs > 1) { + ath_dbg(common, WOW, "WoW for multivif is not yet supported\n"); + ret = 1; + goto fail_wow; + } + + ath9k_wow_map_triggers(sc, wowlan, &wow_triggers_enabled); + + ath_dbg(common, WOW, "WoW triggers enabled 0x%x\n", + wow_triggers_enabled); + + ath9k_ps_wakeup(sc); + + ath9k_stop_btcoex(sc); /* - * Keep alive delay in us. based on 'power on clock', - * therefore in usec + * Enable wake up on recieving disassoc/deauth + * frame by default. */ - set = KAL_DELAY * 1000; - REG_WRITE(ah, AR_WOW_KEEP_ALIVE_DELAY, set); + ath9k_wow_add_disassoc_deauth_pattern(sc); + + if (wow_triggers_enabled & AH_WOW_USER_PATTERN_EN) + ath9k_wow_add_pattern(sc, wowlan); + spin_lock_bh(&sc->sc_pcu_lock); /* - * Create keep alive pattern to respond to beacons + * To avoid false wake, we enable beacon miss interrupt only + * when we go to sleep. We save the current interrupt mask + * so we can restore it after the system wakes up */ - ath9k_wow_create_keep_alive_pattern(ah); + sc->wow_intr_before_sleep = ah->imask; + ah->imask &= ~ATH9K_INT_GLOBAL; + ath9k_hw_disable_interrupts(ah); + ah->imask = ATH9K_INT_BMISS | ATH9K_INT_GLOBAL; + ath9k_hw_set_interrupts(ah); + ath9k_hw_enable_interrupts(ah); + + spin_unlock_bh(&sc->sc_pcu_lock); /* - * Configure MAC WoW Registers + * we can now sync irq and kill any running tasklets, since we already + * disabled interrupts and not holding a spin lock */ - set = 0; - /* Send keep alive timeouts anyway */ - clr = AR_WOW_KEEP_ALIVE_AUTO_DIS; + synchronize_irq(sc->irq); + tasklet_kill(&sc->intr_tq); - if (pattern_enable & AH_WOW_LINK_CHANGE) - wow_event_mask |= AR_WOW_KEEP_ALIVE_FAIL; - else - set = AR_WOW_KEEP_ALIVE_FAIL_DIS; + ath9k_hw_wow_enable(ah, wow_triggers_enabled); - set = AR_WOW_KEEP_ALIVE_FAIL_DIS; - REG_RMW(ah, AR_WOW_KEEP_ALIVE, set, clr); + ath9k_ps_restore(sc); + ath_dbg(common, ANY, "WoW enabled in ath9k\n"); + atomic_inc(&sc->wow_sleep_proc_intr); - /* - * we are relying on a bmiss failure. ensure we have - * enough threshold to prevent false positives - */ - REG_RMW_FIELD(ah, AR_RSSI_THR, AR_RSSI_THR_BM_THR, - AR_WOW_BMISSTHRESHOLD); +fail_wow: + mutex_unlock(&sc->mutex); + return ret; +} + +int ath9k_resume(struct ieee80211_hw *hw) +{ + struct ath_softc *sc = hw->priv; + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); + u32 wow_status; - set = 0; - clr = 0; + mutex_lock(&sc->mutex); - if (pattern_enable & AH_WOW_BEACON_MISS) { - set = AR_WOW_BEACON_FAIL_EN; - wow_event_mask |= AR_WOW_BEACON_FAIL; - } else { - clr = AR_WOW_BEACON_FAIL_EN; + ath9k_ps_wakeup(sc); + + spin_lock_bh(&sc->sc_pcu_lock); + + ath9k_hw_disable_interrupts(ah); + ah->imask = sc->wow_intr_before_sleep; + ath9k_hw_set_interrupts(ah); + ath9k_hw_enable_interrupts(ah); + + spin_unlock_bh(&sc->sc_pcu_lock); + + wow_status = ath9k_hw_wow_wakeup(ah); + + if (atomic_read(&sc->wow_got_bmiss_intr) == 0) { + /* + * some devices may not pick beacon miss + * as the reason they woke up so we add + * that here for that shortcoming. + */ + wow_status |= AH_WOW_BEACON_MISS; + atomic_dec(&sc->wow_got_bmiss_intr); + ath_dbg(common, ANY, "Beacon miss interrupt picked up during WoW sleep\n"); } - REG_RMW(ah, AR_WOW_BCN_EN, set, clr); + atomic_dec(&sc->wow_sleep_proc_intr); - set = 0; - clr = 0; - /* - * Enable the magic packet registers - */ - if (pattern_enable & AH_WOW_MAGIC_PATTERN_EN) { - set = AR_WOW_MAGIC_EN; - wow_event_mask |= AR_WOW_MAGIC_PAT_FOUND; - } else { - clr = AR_WOW_MAGIC_EN; + if (wow_status) { + ath_dbg(common, ANY, "Waking up due to WoW triggers %s with WoW status = %x\n", + ath9k_hw_wow_event_to_string(wow_status), wow_status); } - set |= AR_WOW_MAC_INTR_EN; - REG_RMW(ah, AR_WOW_PATTERN, set, clr); - REG_WRITE(ah, AR_WOW_PATTERN_MATCH_LT_256B, - AR_WOW_PATTERN_SUPPORTED); + ath_restart_work(sc); + ath9k_start_btcoex(sc); - /* - * Set the power states appropriately and enable PME - */ - clr = 0; - set = AR_PMCTRL_PWR_STATE_D1D3 | AR_PMCTRL_HOST_PME_EN | - AR_PMCTRL_PWR_PM_CTRL_ENA; + ath9k_ps_restore(sc); + mutex_unlock(&sc->mutex); - clr = AR_PCIE_PM_CTRL_ENA; - REG_RMW(ah, AR_PCIE_PM_CTRL, set, clr); + return 0; +} - /* - * this is needed to prevent the chip waking up - * the host within 3-4 seconds with certain - * platform/BIOS. The fix is to enable - * D1 & D3 to match original definition and - * also match the OTP value. Anyway this - * is more related to SW WOW. - */ - clr = AR_PMCTRL_PWR_STATE_D1D3; - REG_CLR_BIT(ah, AR_PCIE_PM_CTRL, clr); +void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled) +{ + struct ath_softc *sc = hw->priv; - set = AR_PMCTRL_PWR_STATE_D1D3_REAL; - REG_SET_BIT(ah, AR_PCIE_PM_CTRL, set); + mutex_lock(&sc->mutex); + device_init_wakeup(sc->dev, 1); + device_set_wakeup_enable(sc->dev, enabled); + mutex_unlock(&sc->mutex); +} - REG_CLR_BIT(ah, AR_STA_ID1, AR_STA_ID1_PRESERVE_SEQNUM); +void ath9k_init_wow(struct ieee80211_hw *hw) +{ + struct ath_softc *sc = hw->priv; - /* to bring down WOW power low margin */ - set = BIT(13); - REG_SET_BIT(ah, AR_PCIE_PHY_REG3, set); - /* HW WoW */ - clr = BIT(5); - REG_CLR_BIT(ah, AR_PCU_MISC_MODE3, clr); + if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_WOW_DEVICE_CAPABLE) && + (sc->driver_data & ATH9K_PCI_WOW) && + device_can_wakeup(sc->dev)) + hw->wiphy->wowlan = &ath9k_wowlan_support; - ath9k_hw_set_powermode_wow_sleep(ah); - ah->wow_event_mask = wow_event_mask; + atomic_set(&sc->wow_sleep_proc_intr, -1); + atomic_set(&sc->wow_got_bmiss_intr, -1); } -EXPORT_SYMBOL(ath9k_hw_wow_enable); |