Date: Tue, 8 Feb 2011 12:49:01 +0000 (UTC) From: Adrian Chadd <adrian@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/dev/ath/ath_hal ah_internal.h src/sys/dev/ath/ath_hal/ar5210 ar5210_attach.c src/sys/dev/ath/ath_hal/ar5211 ar5211_attach.c src/sys/dev/ath/ath_hal/ar5212 ar5212_attach.c src/sys/dev/ath/ath_hal/ar9002 ar9280_attach.c ar9285_attach.c Message-ID: <201102081249.p18CnSJY092626@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
adrian 2011-02-08 12:49:01 UTC
FreeBSD src repository
Modified files:
sys/dev/ath/ath_hal ah_internal.h
sys/dev/ath/ath_hal/ar5210 ar5210_attach.c
sys/dev/ath/ath_hal/ar5211 ar5211_attach.c
sys/dev/ath/ath_hal/ar5212 ar5212_attach.c
sys/dev/ath/ath_hal/ar9002 ar9280_attach.c ar9285_attach.c
Log:
SVN rev 218436 on 2011-02-08 12:49:01Z by adrian
There's apparently a bug with Merlin (AR9280) and later chipsets where
putting descriptors (not buffers) across a 4k page boundary can cause issues.
I've not seen it in production myself but it apparently can cause problems.
So, in preparation for addressing this workaround, (re)-expose the particular
HAL capability bit which marks whether the chipset has support for cross-4k-
boundary transactions or not.
A subsequent commit will modify the descriptor allocation to avoid allocating
descriptor entries that straddle a 4k page boundary.
Revision Changes Path
1.22 +2 -1 src/sys/dev/ath/ath_hal/ah_internal.h
1.11 +2 -0 src/sys/dev/ath/ath_hal/ar5210/ar5210_attach.c
1.11 +2 -0 src/sys/dev/ath/ath_hal/ar5211/ar5211_attach.c
1.14 +2 -0 src/sys/dev/ath/ath_hal/ar5212/ar5212_attach.c
1.7 +0 -2 src/sys/dev/ath/ath_hal/ar9002/ar9280_attach.c
1.7 +0 -2 src/sys/dev/ath/ath_hal/ar9002/ar9285_attach.c
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201102081249.p18CnSJY092626>