d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

* Force the MAC to wakeup before we try resetting it, to ensure

Browse Source 
it actually _gets_ reset properly.
* Add some more comments describing why things are done.

Obtained from:	Atheros
This commit is contained in:
Adrian Chadd 2011-11-09 14:34:25 +00:00
parent 985c86c038
commit ac3fb727ff
1 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
sys/dev/ath/ath_hal/ar5416/ar5416_reset.c
View File

@ -1214,6 +1214,12 @@ ar5416PhyDisable(struct ath_hal *ah)
HAL_BOOL
ar5416SetResetReg(struct ath_hal *ah, uint32_t type)
{
/*
* Set force wake
*/
OS_REG_WRITE(ah, AR_RTC_FORCE_WAKE,
AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
switch (type) {
case HAL_RESET_POWER_ON:
return ar5416SetResetPowerOn(ah);
@ -1244,10 +1250,15 @@ ar5416SetResetPowerOn(struct ath_hal *ah)
AR_RTC_FORCE_WAKE_EN | AR_RTC_FORCE_WAKE_ON_INT);
/*
* RTC reset and clear
* PowerOn reset can be used in open loop power control or failure recovery.
* If we do RTC reset while DMA is still running, hardware may corrupt memory.
* Therefore, we need to reset AHB first to stop DMA.
*/
if (! AR_SREV_HOWL(ah))
OS_REG_WRITE(ah, AR_RC, AR_RC_AHB);
/*
* RTC reset and clear
*/
OS_REG_WRITE(ah, AR_RTC_RESET, 0);
OS_DELAY(20);
@ -1298,6 +1309,11 @@ ar5416SetReset(struct ath_hal *ah, int type)
#endif /* AH_SUPPORT_AR9130 */
/*
* Reset AHB
*
* (In case the last interrupt source was a bus timeout.)
* XXX TODO: this is not the way to do it! It should be recorded
* XXX by the interrupt handler and passed _into_ the
* XXX reset path routine so this occurs.
*/
tmpReg = OS_REG_READ(ah, AR_INTR_SYNC_CAUSE);
if (tmpReg & (AR_INTR_SYNC_LOCAL_TIMEOUT|AR_INTR_SYNC_RADM_CPL_TIMEOUT)) {