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ath9k: Group link monitoring logic 

Add link.c and move all the link/connection monitoring
code to it.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan 2012-06-04 20:23:37 +05:30 коммит произвёл John W. Linville
Родитель 6995fb805e
Коммит ef1b6cd9a1
5 изменённых файлов: 511 добавлений и 479 удалений
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3
drivers/net/wireless/ath/ath9k/Makefile
Просмотреть файл

@ -3,7 +3,8 @@ ath9k-y += beacon.o \
init.o \
main.o \
recv.o \
xmit.o
xmit.o \
link.o
ath9k-$(CONFIG_ATH9K_BTCOEX_SUPPORT) += mci.o
ath9k-$(CONFIG_ATH9K_RATE_CONTROL) += rc.o

13
drivers/net/wireless/ath/ath9k/ath9k.h
Просмотреть файл

@ -326,6 +326,9 @@ int ath_rx_init(struct ath_softc *sc, int nbufs);
void ath_rx_cleanup(struct ath_softc *sc);
int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp);
struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype);
void ath_txq_lock(struct ath_softc *sc, struct ath_txq *txq);
void ath_txq_unlock(struct ath_softc *sc, struct ath_txq *txq);
void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq);
void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq);
bool ath_drain_all_txq(struct ath_softc *sc, bool retry_tx);
void ath_draintxq(struct ath_softc *sc,
@ -415,9 +418,9 @@ int ath_beaconq_config(struct ath_softc *sc);
void ath_set_beacon(struct ath_softc *sc);
void ath9k_set_beaconing_status(struct ath_softc *sc, bool status);
/*******/
/* ANI */
/*******/
/*******************/
/* Link Monitoring */
/*******************/
#define ATH_STA_SHORT_CALINTERVAL 1000 /* 1 second */
#define ATH_AP_SHORT_CALINTERVAL 100 /* 100 ms */
@ -429,6 +432,7 @@ void ath9k_set_beaconing_status(struct ath_softc *sc, bool status);
#define ATH_PAPRD_TIMEOUT 100 /* msecs */
void ath_tx_complete_poll_work(struct work_struct *work);
void ath_reset_work(struct work_struct *work);
void ath_hw_check(struct work_struct *work);
void ath_hw_pll_work(struct work_struct *work);
@ -437,6 +441,8 @@ void ath_start_rx_poll(struct ath_softc *sc, u8 nbeacon);
void ath_paprd_calibrate(struct work_struct *work);
void ath_ani_calibrate(unsigned long data);
void ath_start_ani(struct ath_common *common);
int ath_update_survey_stats(struct ath_softc *sc);
void ath_update_survey_nf(struct ath_softc *sc, int channel);
/**********/
/* BTCOEX */
@ -741,5 +747,4 @@ void ath9k_calculate_iter_data(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ath9k_vif_iter_data *iter_data);
#endif /* ATH9K_H */

497
drivers/net/wireless/ath/ath9k/link.c Normal file
Просмотреть файл

@ -0,0 +1,497 @@
/*
* Copyright (c) 2012 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"
/*
* TX polling - checks if the TX engine is stuck somewhere
* and issues a chip reset if so.
*/
void ath_tx_complete_poll_work(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc,
tx_complete_work.work);
struct ath_txq *txq;
int i;
bool needreset = false;
#ifdef CONFIG_ATH9K_DEBUGFS
sc->tx_complete_poll_work_seen++;
#endif
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
if (ATH_TXQ_SETUP(sc, i)) {
txq = &sc->tx.txq[i];
ath_txq_lock(sc, txq);
if (txq->axq_depth) {
if (txq->axq_tx_inprogress) {
needreset = true;
ath_txq_unlock(sc, txq);
break;
} else {
txq->axq_tx_inprogress = true;
}
}
ath_txq_unlock_complete(sc, txq);
}
if (needreset) {
ath_dbg(ath9k_hw_common(sc->sc_ah), RESET,
"tx hung, resetting the chip\n");
RESET_STAT_INC(sc, RESET_TYPE_TX_HANG);
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
}
ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work,
msecs_to_jiffies(ATH_TX_COMPLETE_POLL_INT));
}
/*
* Checks if the BB/MAC is hung.
*/
void ath_hw_check(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
unsigned long flags;
int busy;
u8 is_alive, nbeacon = 1;
ath9k_ps_wakeup(sc);
is_alive = ath9k_hw_check_alive(sc->sc_ah);
if (is_alive && !AR_SREV_9300(sc->sc_ah))
goto out;
else if (!is_alive && AR_SREV_9300(sc->sc_ah)) {
ath_dbg(common, RESET,
"DCU stuck is detected. Schedule chip reset\n");
RESET_STAT_INC(sc, RESET_TYPE_MAC_HANG);
goto sched_reset;
}
spin_lock_irqsave(&common->cc_lock, flags);
busy = ath_update_survey_stats(sc);
spin_unlock_irqrestore(&common->cc_lock, flags);
ath_dbg(common, RESET, "Possible baseband hang, busy=%d (try %d)\n",
busy, sc->hw_busy_count + 1);
if (busy >= 99) {
if (++sc->hw_busy_count >= 3) {
RESET_STAT_INC(sc, RESET_TYPE_BB_HANG);
goto sched_reset;
}
} else if (busy >= 0) {
sc->hw_busy_count = 0;
nbeacon = 3;
}
ath_start_rx_poll(sc, nbeacon);
goto out;
sched_reset:
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
out:
ath9k_ps_restore(sc);
}
/*
* PLL-WAR for AR9485.
*/
static void ath_hw_pll_rx_hang_check(struct ath_softc *sc, u32 pll_sqsum)
{
static int count;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
if (pll_sqsum >= 0x40000) {
count++;
if (count == 3) {
/* Rx is hung for more than 500ms. Reset it */
ath_dbg(common, RESET, "Possible RX hang, resetting\n");
RESET_STAT_INC(sc, RESET_TYPE_PLL_HANG);
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
count = 0;
}
} else
count = 0;
}
void ath_hw_pll_work(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc,
hw_pll_work.work);
u32 pll_sqsum;
if (AR_SREV_9485(sc->sc_ah)) {
ath9k_ps_wakeup(sc);
pll_sqsum = ar9003_get_pll_sqsum_dvc(sc->sc_ah);
ath9k_ps_restore(sc);
ath_hw_pll_rx_hang_check(sc, pll_sqsum);
ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/5);
}
}
/*
* RX Polling - monitors baseband hangs.
*/
void ath_start_rx_poll(struct ath_softc *sc, u8 nbeacon)
{
if (!AR_SREV_9300(sc->sc_ah))
return;
if (!(sc->sc_flags & SC_OP_PRIM_STA_VIF))
return;
mod_timer(&sc->rx_poll_timer, jiffies + msecs_to_jiffies
(nbeacon * sc->cur_beacon_conf.beacon_interval));
}
void ath_rx_poll(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *)data;
ieee80211_queue_work(sc->hw, &sc->hw_check_work);
}
/*
* PA Pre-distortion.
*/
static void ath_paprd_activate(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
struct ath9k_hw_cal_data *caldata = ah->caldata;
int chain;
if (!caldata || !caldata->paprd_done)
return;
ath9k_ps_wakeup(sc);
ar9003_paprd_enable(ah, false);
for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
if (!(ah->txchainmask & BIT(chain)))
continue;
ar9003_paprd_populate_single_table(ah, caldata, chain);
}
ar9003_paprd_enable(ah, true);
ath9k_ps_restore(sc);
}
static bool ath_paprd_send_frame(struct ath_softc *sc, struct sk_buff *skb, int chain)
{
struct ieee80211_hw *hw = sc->hw;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ath_tx_control txctl;
int time_left;
memset(&txctl, 0, sizeof(txctl));
txctl.txq = sc->tx.txq_map[WME_AC_BE];
memset(tx_info, 0, sizeof(*tx_info));
tx_info->band = hw->conf.channel->band;
tx_info->flags |= IEEE80211_TX_CTL_NO_ACK;
tx_info->control.rates[0].idx = 0;
tx_info->control.rates[0].count = 1;
tx_info->control.rates[0].flags = IEEE80211_TX_RC_MCS;
tx_info->control.rates[1].idx = -1;
init_completion(&sc->paprd_complete);
txctl.paprd = BIT(chain);
if (ath_tx_start(hw, skb, &txctl) != 0) {
ath_dbg(common, CALIBRATE, "PAPRD TX failed\n");
dev_kfree_skb_any(skb);
return false;
}
time_left = wait_for_completion_timeout(&sc->paprd_complete,
msecs_to_jiffies(ATH_PAPRD_TIMEOUT));
if (!time_left)
ath_dbg(common, CALIBRATE,
"Timeout waiting for paprd training on TX chain %d\n",
chain);
return !!time_left;
}
void ath_paprd_calibrate(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc, paprd_work);
struct ieee80211_hw *hw = sc->hw;
struct ath_hw *ah = sc->sc_ah;
struct ieee80211_hdr *hdr;
struct sk_buff *skb = NULL;
struct ath9k_hw_cal_data *caldata = ah->caldata;
struct ath_common *common = ath9k_hw_common(ah);
int ftype;
int chain_ok = 0;
int chain;
int len = 1800;
if (!caldata)
return;
ath9k_ps_wakeup(sc);
if (ar9003_paprd_init_table(ah) < 0)
goto fail_paprd;
skb = alloc_skb(len, GFP_KERNEL);
if (!skb)
goto fail_paprd;
skb_put(skb, len);
memset(skb->data, 0, len);
hdr = (struct ieee80211_hdr *)skb->data;
ftype = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC;
hdr->frame_control = cpu_to_le16(ftype);
hdr->duration_id = cpu_to_le16(10);
memcpy(hdr->addr1, hw->wiphy->perm_addr, ETH_ALEN);
memcpy(hdr->addr2, hw->wiphy->perm_addr, ETH_ALEN);
memcpy(hdr->addr3, hw->wiphy->perm_addr, ETH_ALEN);
for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
if (!(ah->txchainmask & BIT(chain)))
continue;
chain_ok = 0;
ath_dbg(common, CALIBRATE,
"Sending PAPRD frame for thermal measurement on chain %d\n",
chain);
if (!ath_paprd_send_frame(sc, skb, chain))
goto fail_paprd;
ar9003_paprd_setup_gain_table(ah, chain);
ath_dbg(common, CALIBRATE,
"Sending PAPRD training frame on chain %d\n", chain);
if (!ath_paprd_send_frame(sc, skb, chain))
goto fail_paprd;
if (!ar9003_paprd_is_done(ah)) {
ath_dbg(common, CALIBRATE,
"PAPRD not yet done on chain %d\n", chain);
break;
}
if (ar9003_paprd_create_curve(ah, caldata, chain)) {
ath_dbg(common, CALIBRATE,
"PAPRD create curve failed on chain %d\n",
chain);
break;
}
chain_ok = 1;
}
kfree_skb(skb);
if (chain_ok) {
caldata->paprd_done = true;
ath_paprd_activate(sc);
}
fail_paprd:
ath9k_ps_restore(sc);
}
/*
* ANI performs periodic noise floor calibration
* that is used to adjust and optimize the chip performance. This
* takes environmental changes (location, temperature) into account.
* When the task is complete, it reschedules itself depending on the
* appropriate interval that was calculated.
*/
void ath_ani_calibrate(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *)data;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
bool longcal = false;
bool shortcal = false;
bool aniflag = false;
unsigned int timestamp = jiffies_to_msecs(jiffies);
u32 cal_interval, short_cal_interval, long_cal_interval;
unsigned long flags;
if (ah->caldata && ah->caldata->nfcal_interference)
long_cal_interval = ATH_LONG_CALINTERVAL_INT;
else
long_cal_interval = ATH_LONG_CALINTERVAL;
short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
/* Only calibrate if awake */
if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
goto set_timer;
ath9k_ps_wakeup(sc);
/* Long calibration runs independently of short calibration. */
if ((timestamp - common->ani.longcal_timer) >= long_cal_interval) {
longcal = true;
common->ani.longcal_timer = timestamp;
}
/* Short calibration applies only while caldone is false */
if (!common->ani.caldone) {
if ((timestamp - common->ani.shortcal_timer) >= short_cal_interval) {
shortcal = true;
common->ani.shortcal_timer = timestamp;
common->ani.resetcal_timer = timestamp;
}
} else {
if ((timestamp - common->ani.resetcal_timer) >=
ATH_RESTART_CALINTERVAL) {
common->ani.caldone = ath9k_hw_reset_calvalid(ah);
if (common->ani.caldone)
common->ani.resetcal_timer = timestamp;
}
}
/* Verify whether we must check ANI */
if (sc->sc_ah->config.enable_ani
&& (timestamp - common->ani.checkani_timer) >=
ah->config.ani_poll_interval) {
aniflag = true;
common->ani.checkani_timer = timestamp;
}
/* Call ANI routine if necessary */
if (aniflag) {
spin_lock_irqsave(&common->cc_lock, flags);
ath9k_hw_ani_monitor(ah, ah->curchan);
ath_update_survey_stats(sc);
spin_unlock_irqrestore(&common->cc_lock, flags);
}
/* Perform calibration if necessary */
if (longcal || shortcal) {
common->ani.caldone =
ath9k_hw_calibrate(ah, ah->curchan,
ah->rxchainmask, longcal);
}
ath_dbg(common, ANI,
"Calibration @%lu finished: %s %s %s, caldone: %s\n",
jiffies,
longcal ? "long" : "", shortcal ? "short" : "",
aniflag ? "ani" : "", common->ani.caldone ? "true" : "false");
ath9k_ps_restore(sc);
set_timer:
/*
* Set timer interval based on previous results.
* The interval must be the shortest necessary to satisfy ANI,
* short calibration and long calibration.
*/
ath9k_debug_samp_bb_mac(sc);
cal_interval = ATH_LONG_CALINTERVAL;
if (sc->sc_ah->config.enable_ani)
cal_interval = min(cal_interval,
(u32)ah->config.ani_poll_interval);
if (!common->ani.caldone)
cal_interval = min(cal_interval, (u32)short_cal_interval);
mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) && ah->caldata) {
if (!ah->caldata->paprd_done)
ieee80211_queue_work(sc->hw, &sc->paprd_work);
else if (!ah->paprd_table_write_done)
ath_paprd_activate(sc);
}
}
void ath_start_ani(struct ath_common *common)
{
struct ath_hw *ah = common->ah;
unsigned long timestamp = jiffies_to_msecs(jiffies);
struct ath_softc *sc = (struct ath_softc *) common->priv;
if (!(sc->sc_flags & SC_OP_ANI_RUN))
return;
if (sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
return;
common->ani.longcal_timer = timestamp;
common->ani.shortcal_timer = timestamp;
common->ani.checkani_timer = timestamp;
mod_timer(&common->ani.timer,
jiffies + msecs_to_jiffies((u32)ah->config.ani_poll_interval));
}
void ath_update_survey_nf(struct ath_softc *sc, int channel)
{
struct ath_hw *ah = sc->sc_ah;
struct ath9k_channel *chan = &ah->channels[channel];
struct survey_info *survey = &sc->survey[channel];
if (chan->noisefloor) {
survey->filled |= SURVEY_INFO_NOISE_DBM;
survey->noise = ath9k_hw_getchan_noise(ah, chan);
}
}
/*
* Updates the survey statistics and returns the busy time since last
* update in %, if the measurement duration was long enough for the
* result to be useful, -1 otherwise.
*/
int ath_update_survey_stats(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
int pos = ah->curchan - &ah->channels[0];
struct survey_info *survey = &sc->survey[pos];
struct ath_cycle_counters *cc = &common->cc_survey;
unsigned int div = common->clockrate * 1000;
int ret = 0;
if (!ah->curchan)
return -1;
if (ah->power_mode == ATH9K_PM_AWAKE)
ath_hw_cycle_counters_update(common);
if (cc->cycles > 0) {
survey->filled |= SURVEY_INFO_CHANNEL_TIME |
SURVEY_INFO_CHANNEL_TIME_BUSY |
SURVEY_INFO_CHANNEL_TIME_RX |
SURVEY_INFO_CHANNEL_TIME_TX;
survey->channel_time += cc->cycles / div;
survey->channel_time_busy += cc->rx_busy / div;
survey->channel_time_rx += cc->rx_frame / div;
survey->channel_time_tx += cc->tx_frame / div;
}
if (cc->cycles < div)
return -1;
if (cc->cycles > 0)
ret = cc->rx_busy * 100 / cc->cycles;
memset(cc, 0, sizeof(*cc));
ath_update_survey_nf(sc, pos);
return ret;
}

431
drivers/net/wireless/ath/ath9k/main.c
Просмотреть файл

@ -144,84 +144,6 @@ void ath9k_ps_restore(struct ath_softc *sc)
spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
}
void ath_start_ani(struct ath_common *common)
{
struct ath_hw *ah = common->ah;
unsigned long timestamp = jiffies_to_msecs(jiffies);
struct ath_softc *sc = (struct ath_softc *) common->priv;
if (!(sc->sc_flags & SC_OP_ANI_RUN))
return;
if (sc->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
return;
common->ani.longcal_timer = timestamp;
common->ani.shortcal_timer = timestamp;
common->ani.checkani_timer = timestamp;
mod_timer(&common->ani.timer,
jiffies +
msecs_to_jiffies((u32)ah->config.ani_poll_interval));
}
static void ath_update_survey_nf(struct ath_softc *sc, int channel)
{
struct ath_hw *ah = sc->sc_ah;
struct ath9k_channel *chan = &ah->channels[channel];
struct survey_info *survey = &sc->survey[channel];
if (chan->noisefloor) {
survey->filled |= SURVEY_INFO_NOISE_DBM;
survey->noise = ath9k_hw_getchan_noise(ah, chan);
}
}
/*
* Updates the survey statistics and returns the busy time since last
* update in %, if the measurement duration was long enough for the
* result to be useful, -1 otherwise.
*/
static int ath_update_survey_stats(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
int pos = ah->curchan - &ah->channels[0];
struct survey_info *survey = &sc->survey[pos];
struct ath_cycle_counters *cc = &common->cc_survey;
unsigned int div = common->clockrate * 1000;
int ret = 0;
if (!ah->curchan)
return -1;
if (ah->power_mode == ATH9K_PM_AWAKE)
ath_hw_cycle_counters_update(common);
if (cc->cycles > 0) {
survey->filled |= SURVEY_INFO_CHANNEL_TIME |
SURVEY_INFO_CHANNEL_TIME_BUSY |
SURVEY_INFO_CHANNEL_TIME_RX |
SURVEY_INFO_CHANNEL_TIME_TX;
survey->channel_time += cc->cycles / div;
survey->channel_time_busy += cc->rx_busy / div;
survey->channel_time_rx += cc->rx_frame / div;
survey->channel_time_tx += cc->tx_frame / div;
}
if (cc->cycles < div)
return -1;
if (cc->cycles > 0)
ret = cc->rx_busy * 100 / cc->cycles;
memset(cc, 0, sizeof(*cc));
ath_update_survey_nf(sc, pos);
return ret;
}
static void __ath_cancel_work(struct ath_softc *sc)
{
cancel_work_sync(&sc->paprd_work);
@ -380,258 +302,6 @@ static int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
return r;
}
static void ath_paprd_activate(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
struct ath9k_hw_cal_data *caldata = ah->caldata;
int chain;
if (!caldata || !caldata->paprd_done)
return;
ath9k_ps_wakeup(sc);
ar9003_paprd_enable(ah, false);
for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
if (!(ah->txchainmask & BIT(chain)))
continue;
ar9003_paprd_populate_single_table(ah, caldata, chain);
}
ar9003_paprd_enable(ah, true);
ath9k_ps_restore(sc);
}
static bool ath_paprd_send_frame(struct ath_softc *sc, struct sk_buff *skb, int chain)
{
struct ieee80211_hw *hw = sc->hw;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ath_tx_control txctl;
int time_left;
memset(&txctl, 0, sizeof(txctl));
txctl.txq = sc->tx.txq_map[WME_AC_BE];
memset(tx_info, 0, sizeof(*tx_info));
tx_info->band = hw->conf.channel->band;
tx_info->flags |= IEEE80211_TX_CTL_NO_ACK;
tx_info->control.rates[0].idx = 0;
tx_info->control.rates[0].count = 1;
tx_info->control.rates[0].flags = IEEE80211_TX_RC_MCS;
tx_info->control.rates[1].idx = -1;
init_completion(&sc->paprd_complete);
txctl.paprd = BIT(chain);
if (ath_tx_start(hw, skb, &txctl) != 0) {
ath_dbg(common, CALIBRATE, "PAPRD TX failed\n");
dev_kfree_skb_any(skb);
return false;
}
time_left = wait_for_completion_timeout(&sc->paprd_complete,
msecs_to_jiffies(ATH_PAPRD_TIMEOUT));
if (!time_left)
ath_dbg(common, CALIBRATE,
"Timeout waiting for paprd training on TX chain %d\n",
chain);
return !!time_left;
}
void ath_paprd_calibrate(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc, paprd_work);
struct ieee80211_hw *hw = sc->hw;
struct ath_hw *ah = sc->sc_ah;
struct ieee80211_hdr *hdr;
struct sk_buff *skb = NULL;
struct ath9k_hw_cal_data *caldata = ah->caldata;
struct ath_common *common = ath9k_hw_common(ah);
int ftype;
int chain_ok = 0;
int chain;
int len = 1800;
if (!caldata)
return;
ath9k_ps_wakeup(sc);
if (ar9003_paprd_init_table(ah) < 0)
goto fail_paprd;
skb = alloc_skb(len, GFP_KERNEL);
if (!skb)
goto fail_paprd;
skb_put(skb, len);
memset(skb->data, 0, len);
hdr = (struct ieee80211_hdr *)skb->data;
ftype = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC;
hdr->frame_control = cpu_to_le16(ftype);
hdr->duration_id = cpu_to_le16(10);
memcpy(hdr->addr1, hw->wiphy->perm_addr, ETH_ALEN);
memcpy(hdr->addr2, hw->wiphy->perm_addr, ETH_ALEN);
memcpy(hdr->addr3, hw->wiphy->perm_addr, ETH_ALEN);
for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
if (!(ah->txchainmask & BIT(chain)))
continue;
chain_ok = 0;
ath_dbg(common, CALIBRATE,
"Sending PAPRD frame for thermal measurement on chain %d\n",
chain);
if (!ath_paprd_send_frame(sc, skb, chain))
goto fail_paprd;
ar9003_paprd_setup_gain_table(ah, chain);
ath_dbg(common, CALIBRATE,
"Sending PAPRD training frame on chain %d\n", chain);
if (!ath_paprd_send_frame(sc, skb, chain))
goto fail_paprd;
if (!ar9003_paprd_is_done(ah)) {
ath_dbg(common, CALIBRATE,
"PAPRD not yet done on chain %d\n", chain);
break;
}
if (ar9003_paprd_create_curve(ah, caldata, chain)) {
ath_dbg(common, CALIBRATE,
"PAPRD create curve failed on chain %d\n",
chain);
break;
}
chain_ok = 1;
}
kfree_skb(skb);
if (chain_ok) {
caldata->paprd_done = true;
ath_paprd_activate(sc);
}
fail_paprd:
ath9k_ps_restore(sc);
}
/*
* This routine performs the periodic noise floor calibration function
* that is used to adjust and optimize the chip performance. This
* takes environmental changes (location, temperature) into account.
* When the task is complete, it reschedules itself depending on the
* appropriate interval that was calculated.
*/
void ath_ani_calibrate(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *)data;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
bool longcal = false;
bool shortcal = false;
bool aniflag = false;
unsigned int timestamp = jiffies_to_msecs(jiffies);
u32 cal_interval, short_cal_interval, long_cal_interval;
unsigned long flags;
if (ah->caldata && ah->caldata->nfcal_interference)
long_cal_interval = ATH_LONG_CALINTERVAL_INT;
else
long_cal_interval = ATH_LONG_CALINTERVAL;
short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
/* Only calibrate if awake */
if (sc->sc_ah->power_mode != ATH9K_PM_AWAKE)
goto set_timer;
ath9k_ps_wakeup(sc);
/* Long calibration runs independently of short calibration. */
if ((timestamp - common->ani.longcal_timer) >= long_cal_interval) {
longcal = true;
common->ani.longcal_timer = timestamp;
}
/* Short calibration applies only while caldone is false */
if (!common->ani.caldone) {
if ((timestamp - common->ani.shortcal_timer) >= short_cal_interval) {
shortcal = true;
common->ani.shortcal_timer = timestamp;
common->ani.resetcal_timer = timestamp;
}
} else {
if ((timestamp - common->ani.resetcal_timer) >=
ATH_RESTART_CALINTERVAL) {
common->ani.caldone = ath9k_hw_reset_calvalid(ah);
if (common->ani.caldone)
common->ani.resetcal_timer = timestamp;
}
}
/* Verify whether we must check ANI */
if (sc->sc_ah->config.enable_ani
&& (timestamp - common->ani.checkani_timer) >=
ah->config.ani_poll_interval) {
aniflag = true;
common->ani.checkani_timer = timestamp;
}
/* Call ANI routine if necessary */
if (aniflag) {
spin_lock_irqsave(&common->cc_lock, flags);
ath9k_hw_ani_monitor(ah, ah->curchan);
ath_update_survey_stats(sc);
spin_unlock_irqrestore(&common->cc_lock, flags);
}
/* Perform calibration if necessary */
if (longcal || shortcal) {
common->ani.caldone =
ath9k_hw_calibrate(ah, ah->curchan,
ah->rxchainmask, longcal);
}
ath_dbg(common, ANI,
"Calibration @%lu finished: %s %s %s, caldone: %s\n",
jiffies,
longcal ? "long" : "", shortcal ? "short" : "",
aniflag ? "ani" : "", common->ani.caldone ? "true" : "false");
ath9k_ps_restore(sc);
set_timer:
/*
* Set timer interval based on previous results.
* The interval must be the shortest necessary to satisfy ANI,
* short calibration and long calibration.
*/
ath9k_debug_samp_bb_mac(sc);
cal_interval = ATH_LONG_CALINTERVAL;
if (sc->sc_ah->config.enable_ani)
cal_interval = min(cal_interval,
(u32)ah->config.ani_poll_interval);
if (!common->ani.caldone)
cal_interval = min(cal_interval, (u32)short_cal_interval);
mod_timer(&common->ani.timer, jiffies + msecs_to_jiffies(cal_interval));
if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) && ah->caldata) {
if (!ah->caldata->paprd_done)
ieee80211_queue_work(sc->hw, &sc->paprd_work);
else if (!ah->paprd_table_write_done)
ath_paprd_activate(sc);
}
}
static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta,
struct ieee80211_vif *vif)
{
@ -669,7 +339,6 @@ static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta)
ath_tx_node_cleanup(sc, an);
}
void ath9k_tasklet(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *)data;
@ -903,87 +572,6 @@ void ath_reset_work(struct work_struct *work)
ath_reset(sc, true);
}
void ath_hw_check(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
unsigned long flags;
int busy;
u8 is_alive, nbeacon = 1;
ath9k_ps_wakeup(sc);
is_alive = ath9k_hw_check_alive(sc->sc_ah);
if (is_alive && !AR_SREV_9300(sc->sc_ah))
goto out;
else if (!is_alive && AR_SREV_9300(sc->sc_ah)) {
ath_dbg(common, RESET,
"DCU stuck is detected. Schedule chip reset\n");
RESET_STAT_INC(sc, RESET_TYPE_MAC_HANG);
goto sched_reset;
}
spin_lock_irqsave(&common->cc_lock, flags);
busy = ath_update_survey_stats(sc);
spin_unlock_irqrestore(&common->cc_lock, flags);
ath_dbg(common, RESET, "Possible baseband hang, busy=%d (try %d)\n",
busy, sc->hw_busy_count + 1);
if (busy >= 99) {
if (++sc->hw_busy_count >= 3) {
RESET_STAT_INC(sc, RESET_TYPE_BB_HANG);
goto sched_reset;
}
} else if (busy >= 0) {
sc->hw_busy_count = 0;
nbeacon = 3;
}
ath_start_rx_poll(sc, nbeacon);
goto out;
sched_reset:
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
out:
ath9k_ps_restore(sc);
}
static void ath_hw_pll_rx_hang_check(struct ath_softc *sc, u32 pll_sqsum)
{
static int count;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
if (pll_sqsum >= 0x40000) {
count++;
if (count == 3) {
/* Rx is hung for more than 500ms. Reset it */
ath_dbg(common, RESET, "Possible RX hang, resetting\n");
RESET_STAT_INC(sc, RESET_TYPE_PLL_HANG);
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
count = 0;
}
} else
count = 0;
}
void ath_hw_pll_work(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc,
hw_pll_work.work);
u32 pll_sqsum;
if (AR_SREV_9485(sc->sc_ah)) {
ath9k_ps_wakeup(sc);
pll_sqsum = ar9003_get_pll_sqsum_dvc(sc->sc_ah);
ath9k_ps_restore(sc);
ath_hw_pll_rx_hang_check(sc, pll_sqsum);
ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/5);
}
}
/**********************/
/* mac80211 callbacks */
/**********************/
@ -1389,25 +977,6 @@ static void ath9k_do_vif_add_setup(struct ieee80211_hw *hw,
}
}
void ath_start_rx_poll(struct ath_softc *sc, u8 nbeacon)
{
if (!AR_SREV_9300(sc->sc_ah))
return;
if (!(sc->sc_flags & SC_OP_PRIM_STA_VIF))
return;
mod_timer(&sc->rx_poll_timer, jiffies + msecs_to_jiffies
(nbeacon * sc->cur_beacon_conf.beacon_interval));
}
void ath_rx_poll(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *)data;
ieee80211_queue_work(sc->hw, &sc->hw_check_work);
}
static int ath9k_add_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{

46
drivers/net/wireless/ath/ath9k/xmit.c
Просмотреть файл

@ -105,19 +105,19 @@ static int ath_max_4ms_framelen[4][32] = {
/* Aggregation logic */
/*********************/
static void ath_txq_lock(struct ath_softc *sc, struct ath_txq *txq)
void ath_txq_lock(struct ath_softc *sc, struct ath_txq *txq)
__acquires(&txq->axq_lock)
{
spin_lock_bh(&txq->axq_lock);
}
static void ath_txq_unlock(struct ath_softc *sc, struct ath_txq *txq)
void ath_txq_unlock(struct ath_softc *sc, struct ath_txq *txq)
__releases(&txq->axq_lock)
{
spin_unlock_bh(&txq->axq_lock);
}
static void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq)
void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq)
__releases(&txq->axq_lock)
{
struct sk_buff_head q;
@ -2231,46 +2231,6 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
ath_txq_unlock_complete(sc, txq);
}
static void ath_tx_complete_poll_work(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc,
tx_complete_work.work);
struct ath_txq *txq;
int i;
bool needreset = false;
#ifdef CONFIG_ATH9K_DEBUGFS
sc->tx_complete_poll_work_seen++;
#endif
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
if (ATH_TXQ_SETUP(sc, i)) {
txq = &sc->tx.txq[i];
ath_txq_lock(sc, txq);
if (txq->axq_depth) {
if (txq->axq_tx_inprogress) {
needreset = true;
ath_txq_unlock(sc, txq);
break;
} else {
txq->axq_tx_inprogress = true;
}
}
ath_txq_unlock_complete(sc, txq);
}
if (needreset) {
ath_dbg(ath9k_hw_common(sc->sc_ah), RESET,
"tx hung, resetting the chip\n");
RESET_STAT_INC(sc, RESET_TYPE_TX_HANG);
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
}
ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work,
msecs_to_jiffies(ATH_TX_COMPLETE_POLL_INT));
}
void ath_tx_tasklet(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;