svn commit: r225842 - user/adrian/if_ath_tx/sys/dev/ath/ath_hal/ar5416

[Adrian Chadd]

Author: adrian
Date: Wed Sep 28 15:36:08 2011
New Revision: 225842
URL: http://svn.freebsd.org/changeset/base/225842

Log:
  Flip back to the atheros defaults for now. Now that I've figured out why I'm
  getting performance issues on these mips boards (interrupts occuring in a race
  window between critical_enter and "wait", and thus being delayed until the
  next interrupt), this provides better RX performance under heavy UDP load.
  
  This doesn't fix the issue - it just means that under heavy UDP load, I'm
  not getting 1 RX interrupt every 2ms. This turns out not to be often enough
  in some occasional situations. Some more research is needed though..

Modified:
  user/adrian/if_ath_tx/sys/dev/ath/ath_hal/ar5416/ar5416_reset.c

Modified: user/adrian/if_ath_tx/sys/dev/ath/ath_hal/ar5416/ar5416_reset.c
==============================================================================
--- user/adrian/if_ath_tx/sys/dev/ath/ath_hal/ar5416/ar5416_reset.c	Wed Sep 28 15:01:20 2011	(r225841)
+++ user/adrian/if_ath_tx/sys/dev/ath/ath_hal/ar5416/ar5416_reset.c	Wed Sep 28 15:36:08 2011	(r225842)
@@ -361,8 +361,8 @@ ar5416Reset(struct ath_hal *ah, HAL_OPMO
 	OS_REG_WRITE(ah, AR_MIRT, 0);
 
 #ifdef	AH_AR5416_INTERRUPT_MITIGATION
-	OS_REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, 500);
-	OS_REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, 2000);
+	OS_REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_LAST, 250);
+	OS_REG_RMW_FIELD(ah, AR_RIMT, AR_RIMT_FIRST, 700);
 #endif
 	ar5416InitBB(ah, chan);