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ath9k: Enable TSF Out of Range Interrupt 

This patch lays the groundwork for handling TSF Out of Range
interrupt, which will be used for power save later on.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith 2009-02-12 10:06:47 +05:30 committed by John W. Linville
parent 06d0f0663e
commit 4af9cf4fda
5 changed files with 27 additions and 7 deletions
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3
drivers/net/wireless/ath9k/beacon.c
View File

@ -753,6 +753,9 @@ void ath_beacon_config(struct ath_softc *sc, int if_id)
if (bs.bs_sleepduration > bs.bs_dtimperiod)
bs.bs_sleepduration = bs.bs_dtimperiod;
/* TSF out of range threshold fixed at 1 second */
bs.bs_tsfoor_threshold = ATH9K_TSFOOR_THRESHOLD;
DPRINTF(sc, ATH_DBG_BEACON,
"tsf %llu "
"tsf:tu %u "

8
drivers/net/wireless/ath9k/hw.c
View File

@ -2803,6 +2803,8 @@ bool ath9k_hw_getisr(struct ath_hw *ah, enum ath9k_int *masked)
mask2 |= ATH9K_INT_GTT;
if (isr2 & AR_ISR_S2_CST)
mask2 |= ATH9K_INT_CST;
if (isr2 & AR_ISR_S2_TSFOOR)
mask2 |= ATH9K_INT_TSFOOR;
}
isr = REG_READ(ah, AR_ISR_RAC);
@ -2948,7 +2950,9 @@ enum ath9k_int ath9k_hw_set_interrupts(struct ath_hw *ah, enum ath9k_int ints)
if (ints & ATH9K_INT_DTIMSYNC)
mask2 |= AR_IMR_S2_DTIMSYNC;
if (ints & ATH9K_INT_CABEND)
mask2 |= (AR_IMR_S2_CABEND);
mask2 |= AR_IMR_S2_CABEND;
if (ints & ATH9K_INT_TSFOOR)
mask2 |= AR_IMR_S2_TSFOOR;
}
if (ints & (ATH9K_INT_GTT | ATH9K_INT_CST)) {
@ -3118,6 +3122,8 @@ void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
AR_TBTT_TIMER_EN | AR_TIM_TIMER_EN |
AR_DTIM_TIMER_EN);
/* TSF Out of Range Threshold */
REG_WRITE(ah, AR_TSFOOR_THRESHOLD, bs->bs_tsfoor_threshold);
}
/*******************/

4
drivers/net/wireless/ath9k/hw.h
View File

@ -249,6 +249,7 @@ enum ath9k_int {
ATH9K_INT_DTIMSYNC = 0x00800000,
ATH9K_INT_GPIO = 0x01000000,
ATH9K_INT_CABEND = 0x02000000,
ATH9K_INT_TSFOOR = 0x04000000,
ATH9K_INT_CST = 0x10000000,
ATH9K_INT_GTT = 0x20000000,
ATH9K_INT_FATAL = 0x40000000,
@ -256,6 +257,7 @@ enum ath9k_int {
ATH9K_INT_BMISC = ATH9K_INT_TIM |
ATH9K_INT_DTIM |
ATH9K_INT_DTIMSYNC |
ATH9K_INT_TSFOOR |
ATH9K_INT_CABEND,
ATH9K_INT_COMMON = ATH9K_INT_RXNOFRM |
ATH9K_INT_RXDESC |
@ -385,6 +387,7 @@ struct ath9k_beacon_state {
#define ATH9K_BEACON_PERIOD 0x0000ffff
#define ATH9K_BEACON_ENA 0x00800000
#define ATH9K_BEACON_RESET_TSF 0x01000000
#define ATH9K_TSFOOR_THRESHOLD 0x00004240 /* 16k us */
u32 bs_dtimperiod;
u16 bs_cfpperiod;
u16 bs_cfpmaxduration;
@ -392,6 +395,7 @@ struct ath9k_beacon_state {
u16 bs_timoffset;
u16 bs_bmissthreshold;
u32 bs_sleepduration;
u32 bs_tsfoor_threshold;
};
struct chan_centers {

15
drivers/net/wireless/ath9k/main.c
View File

@ -574,6 +574,10 @@ irqreturn_t ath_isr(int irq, void *dev)
sc->sc_flags |= SC_OP_WAIT_FOR_BEACON;
}
}
if (status & ATH9K_INT_TSFOOR) {
/* FIXME: Handle this interrupt for power save */
sched = true;
}
}
} while (0);
@ -2165,10 +2169,13 @@ static int ath9k_add_interface(struct ieee80211_hw *hw,
* Enable MIB interrupts when there are hardware phy counters.
* Note we only do this (at the moment) for station mode.
*/
if (ath9k_hw_phycounters(sc->sc_ah) &&
((conf->type == NL80211_IFTYPE_STATION) ||
(conf->type == NL80211_IFTYPE_ADHOC)))
sc->imask |= ATH9K_INT_MIB;
if ((conf->type == NL80211_IFTYPE_STATION) ||
(conf->type == NL80211_IFTYPE_ADHOC)) {
if (ath9k_hw_phycounters(sc->sc_ah))
sc->imask |= ATH9K_INT_MIB;
sc->imask |= ATH9K_INT_TSFOOR;
}
/*
* Some hardware processes the TIM IE and fires an
* interrupt when the TIM bit is set. For hardware

4
drivers/net/wireless/ath9k/reg.h
View File

@ -1385,8 +1385,8 @@ enum {
#define AR_PHY_COUNTMAX (3 << 22)
#define AR_MIBCNT_INTRMASK (3 << 22)
#define AR_TSF_THRESHOLD 0x813c
#define AR_TSF_THRESHOLD_VAL 0x0000FFFF
#define AR_TSFOOR_THRESHOLD 0x813c
#define AR_TSFOOR_THRESHOLD_VAL 0x0000FFFF
#define AR_PHY_ERR_EIFS_MASK 8144