svn commit: r219942 - in head/sys/dev/ath: . ath_hal ath_hal/ar5416
Adrian Chadd
adrian at FreeBSD.org
Wed Mar 23 23:48:45 UTC 2011
Author: adrian
Date: Wed Mar 23 23:48:44 2011
New Revision: 219942
URL: http://svn.freebsd.org/changeset/base/219942
Log:
Make the ar2133ForceBias() call controllable at runtime.
At least one AR5416 user has reported measurable throughput drops
with this option. For now, disable it and make it a run-time
twiddle. It won't take affect until the next radio programming
trip though (eg channel scan, channel change.)
Modified:
head/sys/dev/ath/ah_osdep.c
head/sys/dev/ath/ath_hal/ah_internal.h
head/sys/dev/ath/ath_hal/ar5416/ar2133.c
Modified: head/sys/dev/ath/ah_osdep.c
==============================================================================
--- head/sys/dev/ath/ah_osdep.c Wed Mar 23 22:35:18 2011 (r219941)
+++ head/sys/dev/ath/ah_osdep.c Wed Mar 23 23:48:44 2011 (r219942)
@@ -85,6 +85,11 @@ SYSCTL_INT(_hw_ath_hal, OID_AUTO, debug,
TUNABLE_INT("hw.ath.hal.debug", &ath_hal_debug);
#endif /* AH_DEBUG */
+int ath_hal_ar5416_biasadj = 0;
+SYSCTL_INT(_hw_ath_hal, OID_AUTO, ar5416_biasadj, CTLFLAG_RW,
+ &ath_hal_debug, 0, "Enable 2ghz AR5416 direction sensitivity"
+ " bias adjust");
+
/* NB: these are deprecated; they exist for now for compatibility */
int ath_hal_dma_beacon_response_time = 2; /* in TU's */
SYSCTL_INT(_hw_ath_hal, OID_AUTO, dma_brt, CTLFLAG_RW,
Modified: head/sys/dev/ath/ath_hal/ah_internal.h
==============================================================================
--- head/sys/dev/ath/ath_hal/ah_internal.h Wed Mar 23 22:35:18 2011 (r219941)
+++ head/sys/dev/ath/ath_hal/ah_internal.h Wed Mar 23 23:48:44 2011 (r219942)
@@ -476,6 +476,7 @@ isBigEndian(void)
extern int ath_hal_dma_beacon_response_time; /* in TU's */
extern int ath_hal_sw_beacon_response_time; /* in TU's */
extern int ath_hal_additional_swba_backoff; /* in TU's */
+extern int ath_hal_ar5416_biasadj; /* 1 or 0 */
/* wait for the register contents to have the specified value */
extern HAL_BOOL ath_hal_wait(struct ath_hal *, u_int reg,
Modified: head/sys/dev/ath/ath_hal/ar5416/ar2133.c
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5416/ar2133.c Wed Mar 23 22:35:18 2011 (r219941)
+++ head/sys/dev/ath/ath_hal/ar5416/ar2133.c Wed Mar 23 23:48:44 2011 (r219942)
@@ -185,7 +185,7 @@ ar2133SetChannel(struct ath_hal *ah, con
}
/* Workaround for hw bug - AR5416 specific */
- if (AR_SREV_OWL(ah))
+ if (AR_SREV_OWL(ah) && ath_hal_ar5416_biasadj)
ar2133ForceBias(ah, freq);
reg32 = (channelSel << 8) | (aModeRefSel << 2) | (bModeSynth << 1) |
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