Author: adrian
Date: Sat Apr 28 03:07:36 2012
New Revision: 234747
URL: http://svn.freebsd.org/changeset/base/234747
Log:
Add an AR5416 PCU DMA stop method, as a check for the AR9130 is needed.
The reference driver has a 3ms delay for the AR9130 but I'm not as yet
sure why. From what I can gather, it's likely waiting for some FIFO
flush to occur.
At some point in the future it may be worthwhile adding a WMAC
FIFO flush here, but that'd require some side-call through to the SoC
DDR flush routines.
Obtained from: Atheros
Modified:
head/sys/dev/ath/ath_hal/ar5416/ar5416.h
head/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c
head/sys/dev/ath/ath_hal/ar5416/ar5416_recv.c
Modified: head/sys/dev/ath/ath_hal/ar5416/ar5416.h
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5416/ar5416.h Sat Apr 28 02:48:51 2012
(r234746)
+++ head/sys/dev/ath/ath_hal/ar5416/ar5416.h Sat Apr 28 03:07:36 2012
(r234747)
@@ -234,6 +234,7 @@ extern HAL_BOOL ar5416SetKeyCacheEntry(s
extern uint32_t ar5416GetRxFilter(struct ath_hal *ah);
extern void ar5416SetRxFilter(struct ath_hal *ah, uint32_t bits);
+extern HAL_BOOL ar5416StopDmaReceive(struct ath_hal *ah);
extern void ar5416StartPcuReceive(struct ath_hal *ah);
extern void ar5416StopPcuReceive(struct ath_hal *ah);
extern HAL_BOOL ar5416SetupRxDesc(struct ath_hal *,
Modified: head/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c Sat Apr 28 02:48:51
2012 (r234746)
+++ head/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c Sat Apr 28 03:07:36
2012 (r234747)
@@ -119,6 +119,7 @@ ar5416InitState(struct ath_hal_5416 *ahp
/* Receive Functions */
ah->ah_getRxFilter = ar5416GetRxFilter;
ah->ah_setRxFilter = ar5416SetRxFilter;
+ ah->ah_stopDmaReceive = ar5416StopDmaReceive;
ah->ah_startPcuReceive = ar5416StartPcuReceive;
ah->ah_stopPcuReceive = ar5416StopPcuReceive;
ah->ah_setupRxDesc = ar5416SetupRxDesc;
Modified: head/sys/dev/ath/ath_hal/ar5416/ar5416_recv.c
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5416/ar5416_recv.c Sat Apr 28 02:48:51
2012 (r234746)
+++ head/sys/dev/ath/ath_hal/ar5416/ar5416_recv.c Sat Apr 28 03:07:36
2012 (r234747)
@@ -67,6 +67,40 @@ ar5416SetRxFilter(struct ath_hal *ah, u_
}
/*
+ * Stop Receive at the DMA engine
+ */
+HAL_BOOL
+ar5416StopDmaReceive(struct ath_hal *ah)
+{
+ HAL_BOOL status;
+
+ OS_MARK(ah, AH_MARK_RX_CTL, AH_MARK_RX_CTL_DMA_STOP);
+ OS_REG_WRITE(ah, AR_CR, AR_CR_RXD); /* Set receive disable bit */
+ if (!ath_hal_wait(ah, AR_CR, AR_CR_RXE, 0)) {
+ OS_MARK(ah, AH_MARK_RX_CTL, AH_MARK_RX_CTL_DMA_STOP_ERR);
+#ifdef AH_DEBUG
+ ath_hal_printf(ah, "%s: dma failed to stop in 10ms\n"
+ "AR_CR=0x%08x\nAR_DIAG_SW=0x%08x\n",
+ __func__,
+ OS_REG_READ(ah, AR_CR),
+ OS_REG_READ(ah, AR_DIAG_SW));
+#endif
+ status = AH_FALSE;
+ } else {
+ status = AH_TRUE;
+ }
+
+ /*
+ * XXX Is this to flush whatever is in a FIFO somewhere?
+ * XXX If so, what should the correct behaviour should be?
+ */
+ if (AR_SREV_9100(ah))
+ OS_DELAY(3000);
+
+ return (status);
+}
+
+/*
* Start receive at the PCU engine
*/
void
_______________________________________________
svn-src-head@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
