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Commit e60001e7 authored by Sujith Manoharan's avatar Sujith Manoharan Committed by John W. Linville
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ath9k: Use CONFIG_ATH9K_WOW 

Move the WoW code to wow.c and compile it conditionally
based on CONFIG_ATH9K_WOW.
Signed-off-by: default avatarSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent bb00b1f7
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Showing with 381 additions and 337 deletions
drivers/net/wireless/ath/ath9k/Makefile
View file @ e60001e7
......@@ -15,6 +15,7 @@ ath9k-$(CONFIG_ATH9K_DEBUGFS) += debug.o
ath9k-$(CONFIG_ATH9K_DFS_DEBUGFS) += dfs_debug.o
ath9k-$(CONFIG_ATH9K_DFS_CERTIFIED) += dfs.o
ath9k-$(CONFIG_ATH9K_TX99) += tx99.o
ath9k-$(CONFIG_ATH9K_WOW) += wow.o
obj-$(CONFIG_ATH9K) += ath9k.o
......@@ -40,7 +41,7 @@ ath9k_hw-y:= \
ar9003_eeprom.o \
ar9003_paprd.o
ath9k_hw-$(CONFIG_PM_SLEEP) += ar9003_wow.o
ath9k_hw-$(CONFIG_ATH9K_WOW) += ar9003_wow.o
ath9k_hw-$(CONFIG_ATH9K_BTCOEX_SUPPORT) += btcoex.o \
ar9003_mci.o
......
drivers/net/wireless/ath/ath9k/ath9k.h
View file @ e60001e7
......@@ -570,6 +570,30 @@ static inline void ath_fill_led_pin(struct ath_softc *sc)
}
#endif
/************************/
/* Wake on Wireless LAN */
/************************/
#ifdef CONFIG_ATH9K_WOW
int ath9k_suspend(struct ieee80211_hw *hw,
struct cfg80211_wowlan *wowlan);
int ath9k_resume(struct ieee80211_hw *hw);
void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled);
#else
static inline int ath9k_suspend(struct ieee80211_hw *hw,
struct cfg80211_wowlan *wowlan)
{
return 0;
}
static inline int ath9k_resume(struct ieee80211_hw *hw)
{
return 0;
}
static inline void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled)
{
}
#endif /* CONFIG_ATH9K_WOW */
/*******************************/
/* Antenna diversity/combining */
/*******************************/
......@@ -785,7 +809,7 @@ struct ath_softc {
bool tx99_state;
s16 tx99_power;
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_ATH9K_WOW
atomic_t wow_got_bmiss_intr;
atomic_t wow_sleep_proc_intr; /* in the middle of WoW sleep ? */
u32 wow_intr_before_sleep;
......@@ -984,6 +1008,8 @@ extern bool is_ath9k_unloaded;
u8 ath9k_parse_mpdudensity(u8 mpdudensity);
irqreturn_t ath_isr(int irq, void *dev);
int ath_reset(struct ath_softc *sc);
void ath_cancel_work(struct ath_softc *sc);
void ath_restart_work(struct ath_softc *sc);
int ath9k_init_device(u16 devid, struct ath_softc *sc,
const struct ath_bus_ops *bus_ops);
void ath9k_deinit_device(struct ath_softc *sc);
......
drivers/net/wireless/ath/ath9k/hw.h
View file @ e60001e7
......@@ -921,7 +921,7 @@ struct ath_hw {
/* Enterprise mode cap */
u32 ent_mode;
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_ATH9K_WOW
u32 wow_event_mask;
#endif
bool is_clk_25mhz;
......@@ -1127,7 +1127,7 @@ ath9k_hw_get_btcoex_scheme(struct ath_hw *ah)
#endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_ATH9K_WOW
const char *ath9k_hw_wow_event_to_string(u32 wow_event);
void ath9k_hw_wow_apply_pattern(struct ath_hw *ah, u8 *user_pattern,
u8 *user_mask, int pattern_count,
......
drivers/net/wireless/ath/ath9k/init.c
View file @ e60001e7
......@@ -876,7 +876,7 @@ static const struct ieee80211_iface_combination if_comb[] = {
}
};
#ifdef CONFIG_PM
#ifdef CONFIG_ATH9K_WOW
static const struct wiphy_wowlan_support ath9k_wowlan_support = {
.flags = WIPHY_WOWLAN_MAGIC_PKT | WIPHY_WOWLAN_DISCONNECT,
.n_patterns = MAX_NUM_USER_PATTERN,
......@@ -934,7 +934,7 @@ void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw)
hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_5_10_MHZ;
hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_ATH9K_WOW
if ((ah->caps.hw_caps & ATH9K_HW_WOW_DEVICE_CAPABLE) &&
(sc->driver_data & ATH9K_PCI_WOW) &&
device_can_wakeup(sc->dev))
......
drivers/net/wireless/ath/ath9k/main.c
View file @ e60001e7
......@@ -163,13 +163,13 @@ static void __ath_cancel_work(struct ath_softc *sc)
#endif
}
static void ath_cancel_work(struct ath_softc *sc)
void ath_cancel_work(struct ath_softc *sc)
{
__ath_cancel_work(sc);
cancel_work_sync(&sc->hw_reset_work);
}
static void ath_restart_work(struct ath_softc *sc)
void ath_restart_work(struct ath_softc *sc)
{
ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
......@@ -579,7 +579,8 @@ irqreturn_t ath_isr(int irq, void *dev)
goto chip_reset;
}
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_ATH9K_WOW
if (status & ATH9K_INT_BMISS) {
if (atomic_read(&sc->wow_sleep_proc_intr) == 0) {
ath_dbg(common, ANY, "during WoW we got a BMISS\n");
......@@ -588,6 +589,8 @@ irqreturn_t ath_isr(int irq, void *dev)
}
}
#endif
if (status & ATH9K_INT_SWBA)
tasklet_schedule(&sc->bcon_tasklet);
......@@ -2021,333 +2024,6 @@ static int ath9k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static void ath9k_wow_map_triggers(struct ath_softc *sc,
struct cfg80211_wowlan *wowlan,
u32 *wow_triggers)
{
if (wowlan->disconnect)
*wow_triggers |= AH_WOW_LINK_CHANGE |
AH_WOW_BEACON_MISS;
if (wowlan->magic_pkt)
*wow_triggers |= AH_WOW_MAGIC_PATTERN_EN;
if (wowlan->n_patterns)
*wow_triggers |= AH_WOW_USER_PATTERN_EN;
sc->wow_enabled = *wow_triggers;
}
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);
int pattern_count = 0;
int i, byte_cnt;
u8 dis_deauth_pattern[MAX_PATTERN_SIZE];
u8 dis_deauth_mask[MAX_PATTERN_SIZE];
memset(dis_deauth_pattern, 0, MAX_PATTERN_SIZE);
memset(dis_deauth_mask, 0, MAX_PATTERN_SIZE);
/*
* Create Dissassociate / Deauthenticate packet filter
*
* 2 bytes 2 byte 6 bytes 6 bytes 6 bytes
* +--------------+----------+---------+--------+--------+----
* + Frame Control+ Duration + DA + SA + BSSID +
* +--------------+----------+---------+--------+--------+----
*
* 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.
*
* 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
*
* 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
*/
/* Create Disassociate Pattern first */
byte_cnt = 0;
/* Fill out the mask with all FF's */
for (i = 0; i < MAX_PATTERN_MASK_SIZE; i++)
dis_deauth_mask[i] = 0xff;
/* copy the first byte of frame control field */
dis_deauth_pattern[byte_cnt] = 0xa0;
byte_cnt++;
/* skip 2nd byte of frame control and Duration field */
byte_cnt += 3;
/*
* need not match the destination mac address, it can be a broadcast
* mac address or an unicast to this station
*/
byte_cnt += 6;
/* copy the source mac address */
memcpy((dis_deauth_pattern + byte_cnt), common->curbssid, ETH_ALEN);
byte_cnt += 6;
/* 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++;
/*
* for de-authenticate pattern, only the first byte of the frame
* control field gets changed from 0xA0 to 0xC0
*/
dis_deauth_pattern[0] = 0xC0;
ath9k_hw_wow_apply_pattern(ah, dis_deauth_pattern, dis_deauth_mask,
pattern_count, byte_cnt);
}
static void ath9k_wow_add_pattern(struct ath_softc *sc,
struct cfg80211_wowlan *wowlan)
{
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;
if (!wowlan->n_patterns)
return;
/*
* Add the new user configured patterns
*/
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;
/*
* just need to take care of deauth and disssoc pattern,
* make sure we don't overwrite them.
*/
ath9k_hw_wow_apply_pattern(ah, wow_pattern->pattern_bytes,
wow_pattern->mask_bytes,
i + 2,
wow_pattern->pattern_len);
kfree(wow_pattern);
}
}
static 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;
mutex_lock(&sc->mutex);
ath_cancel_work(sc);
ath_stop_ani(sc);
del_timer_sync(&sc->rx_poll_timer);
if (test_bit(SC_OP_INVALID, &sc->sc_flags)) {
ath_dbg(common, ANY, "Device not present\n");
ret = -EINVAL;
goto fail_wow;
}
if (WARN_ON(!wowlan)) {
ath_dbg(common, WOW, "None of the WoW triggers enabled\n");
ret = -EINVAL;
goto fail_wow;
}
if (!device_can_wakeup(sc->dev)) {
ath_dbg(common, WOW, "device_can_wakeup failed, WoW is not enabled\n");
ret = 1;
goto fail_wow;
}
/*
* 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 (!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);
/*
* Enable wake up on recieving disassoc/deauth
* frame by default.
*/
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);
/*
* 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
*/
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);
/*
* we can now sync irq and kill any running tasklets, since we already
* disabled interrupts and not holding a spin lock
*/
synchronize_irq(sc->irq);
tasklet_kill(&sc->intr_tq);
ath9k_hw_wow_enable(ah, wow_triggers_enabled);
ath9k_ps_restore(sc);
ath_dbg(common, ANY, "WoW enabled in ath9k\n");
atomic_inc(&sc->wow_sleep_proc_intr);
fail_wow:
mutex_unlock(&sc->mutex);
return ret;
}
static 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;
mutex_lock(&sc->mutex);
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");
}
atomic_dec(&sc->wow_sleep_proc_intr);
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);
}
ath_restart_work(sc);
ath9k_start_btcoex(sc);
ath9k_ps_restore(sc);
mutex_unlock(&sc->mutex);
return 0;
}
static void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled)
{
struct ath_softc *sc = hw->priv;
mutex_lock(&sc->mutex);
device_init_wakeup(sc->dev, 1);
device_set_wakeup_enable(sc->dev, enabled);
mutex_unlock(&sc->mutex);
}
#endif
static void ath9k_sw_scan_start(struct ieee80211_hw *hw)
{
struct ath_softc *sc = hw->priv;
......@@ -2403,7 +2079,7 @@ struct ieee80211_ops ath9k_ops = {
.set_antenna = ath9k_set_antenna,
.get_antenna = ath9k_get_antenna,
#ifdef CONFIG_PM_SLEEP
#ifdef CONFIG_ATH9K_WOW
.suspend = ath9k_suspend,
.resume = ath9k_resume,
.set_wakeup = ath9k_set_wakeup,
......
drivers/net/wireless/ath/ath9k/wow.c 0 → 100644
View file @ e60001e7
/*
* 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
* 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"
static void ath9k_wow_map_triggers(struct ath_softc *sc,
struct cfg80211_wowlan *wowlan,
u32 *wow_triggers)
{
if (wowlan->disconnect)
*wow_triggers |= AH_WOW_LINK_CHANGE |
AH_WOW_BEACON_MISS;
if (wowlan->magic_pkt)
*wow_triggers |= AH_WOW_MAGIC_PATTERN_EN;
if (wowlan->n_patterns)
*wow_triggers |= AH_WOW_USER_PATTERN_EN;
sc->wow_enabled = *wow_triggers;
}
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);
int pattern_count = 0;
int i, byte_cnt;
u8 dis_deauth_pattern[MAX_PATTERN_SIZE];
u8 dis_deauth_mask[MAX_PATTERN_SIZE];
memset(dis_deauth_pattern, 0, MAX_PATTERN_SIZE);
memset(dis_deauth_mask, 0, MAX_PATTERN_SIZE);
/*
* Create Dissassociate / Deauthenticate packet filter
*
* 2 bytes 2 byte 6 bytes 6 bytes 6 bytes
* +--------------+----------+---------+--------+--------+----
* + Frame Control+ Duration + DA + SA + BSSID +
* +--------------+----------+---------+--------+--------+----
*
* 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.
*
* 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
*
* 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
*/
/* Create Disassociate Pattern first */
byte_cnt = 0;
/* Fill out the mask with all FF's */
for (i = 0; i < MAX_PATTERN_MASK_SIZE; i++)
dis_deauth_mask[i] = 0xff;
/* copy the first byte of frame control field */
dis_deauth_pattern[byte_cnt] = 0xa0;
byte_cnt++;
/* skip 2nd byte of frame control and Duration field */
byte_cnt += 3;
/*
* need not match the destination mac address, it can be a broadcast
* mac address or an unicast to this station
*/
byte_cnt += 6;
/* copy the source mac address */
memcpy((dis_deauth_pattern + byte_cnt), common->curbssid, ETH_ALEN);
byte_cnt += 6;
/* 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++;
/*
* for de-authenticate pattern, only the first byte of the frame
* control field gets changed from 0xA0 to 0xC0
*/
dis_deauth_pattern[0] = 0xC0;
ath9k_hw_wow_apply_pattern(ah, dis_deauth_pattern, dis_deauth_mask,
pattern_count, byte_cnt);
}
static void ath9k_wow_add_pattern(struct ath_softc *sc,
struct cfg80211_wowlan *wowlan)
{
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;
if (!wowlan->n_patterns)
return;
/*
* Add the new user configured patterns
*/
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;
/*
* just need to take care of deauth and disssoc pattern,
* make sure we don't overwrite them.
*/
ath9k_hw_wow_apply_pattern(ah, wow_pattern->pattern_bytes,
wow_pattern->mask_bytes,
i + 2,
wow_pattern->pattern_len);
kfree(wow_pattern);
}
}
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;
mutex_lock(&sc->mutex);
ath_cancel_work(sc);
ath_stop_ani(sc);
del_timer_sync(&sc->rx_poll_timer);
if (test_bit(SC_OP_INVALID, &sc->sc_flags)) {
ath_dbg(common, ANY, "Device not present\n");
ret = -EINVAL;
goto fail_wow;
}
if (WARN_ON(!wowlan)) {
ath_dbg(common, WOW, "None of the WoW triggers enabled\n");
ret = -EINVAL;
goto fail_wow;
}
if (!device_can_wakeup(sc->dev)) {
ath_dbg(common, WOW, "device_can_wakeup failed, WoW is not enabled\n");
ret = 1;
goto fail_wow;
}
/*
* 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 (!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);
/*
* Enable wake up on recieving disassoc/deauth
* frame by default.
*/
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);
/*
* 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
*/
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);
/*
* we can now sync irq and kill any running tasklets, since we already
* disabled interrupts and not holding a spin lock
*/
synchronize_irq(sc->irq);
tasklet_kill(&sc->intr_tq);
ath9k_hw_wow_enable(ah, wow_triggers_enabled);
ath9k_ps_restore(sc);
ath_dbg(common, ANY, "WoW enabled in ath9k\n");
atomic_inc(&sc->wow_sleep_proc_intr);
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;
mutex_lock(&sc->mutex);
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");
}
atomic_dec(&sc->wow_sleep_proc_intr);
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);
}
ath_restart_work(sc);
ath9k_start_btcoex(sc);
ath9k_ps_restore(sc);
mutex_unlock(&sc->mutex);
return 0;
}
void ath9k_set_wakeup(struct ieee80211_hw *hw, bool enabled)
{
struct ath_softc *sc = hw->priv;
mutex_lock(&sc->mutex);
device_init_wakeup(sc->dev, 1);
device_set_wakeup_enable(sc->dev, enabled);
mutex_unlock(&sc->mutex);
}
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