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From: Adrian Chadd <adrian@FreeBSD.org>
Date: Wed, 4 Apr 2012 22:51:50 +0000 (UTC)
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Subject: svn commit: r233900 - head/sys/dev/ath/ath_hal/ar5416
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Author: adrian
Date: Wed Apr  4 22:51:50 2012
New Revision: 233900
URL: http://svn.freebsd.org/changeset/base/233900

Log:
  Track and optionally log the actual sync interrupt cause.
  
  These are involved in tracking host interface issues (ie, PCI/PCIe/AHB
  interface.)

Modified:
  head/sys/dev/ath/ath_hal/ar5416/ar5416_interrupts.c

Modified: head/sys/dev/ath/ath_hal/ar5416/ar5416_interrupts.c
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5416/ar5416_interrupts.c	Wed Apr  4 22:40:38 2012	(r233899)
+++ head/sys/dev/ath/ath_hal/ar5416/ar5416_interrupts.c	Wed Apr  4 22:51:50 2012	(r233900)
@@ -67,7 +67,7 @@ ar5416IsInterruptPending(struct ath_hal 
 HAL_BOOL
 ar5416GetPendingInterrupts(struct ath_hal *ah, HAL_INT *masked)
 {
-	uint32_t isr, isr0, isr1, sync_cause = 0;
+	uint32_t isr, isr0, isr1, sync_cause = 0, o_sync_cause = 0;
 	HAL_CAPABILITIES *pCap = &AH_PRIVATE(ah)->ah_caps;
 
 #ifdef	AH_INTERRUPT_DEBUGGING
@@ -89,7 +89,7 @@ ar5416GetPendingInterrupts(struct ath_ha
 			isr = OS_REG_READ(ah, AR_ISR);
 		else
 			isr = 0;
-		sync_cause = OS_REG_READ(ah, AR_INTR_SYNC_CAUSE);
+		o_sync_cause = sync_cause = OS_REG_READ(ah, AR_INTR_SYNC_CAUSE);
 		sync_cause &= AR_INTR_SYNC_DEFAULT;
 		*masked = 0;
 
@@ -221,6 +221,9 @@ ar5416GetPendingInterrupts(struct ath_ha
 		return AH_TRUE;
 
 	if (sync_cause != 0) {
+		HALDEBUG(ah, HAL_DEBUG_INTERRUPT, "%s: sync_cause=0x%x\n",
+		    __func__,
+		    o_sync_cause);
 		if (sync_cause & (AR_INTR_SYNC_HOST1_FATAL | AR_INTR_SYNC_HOST1_PERR)) {
 			*masked |= HAL_INT_FATAL;
 		}