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drm/radeon/kms/r7xx: add workaround for hw issue with HDP flush

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Use of HDP_*_COHERENCY_FLUSH_CNTL can cause a hang in certain
situations.  Add workaround.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2010-07-26 18:51:53 -04:00
committed by Dave Airlie
parent 833ee5c4ab
commit 812d046915
4 changed files with 28 additions and 3 deletions
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1
drivers/gpu/drm/radeon/r600d.h
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@@ -250,6 +250,7 @@
#define HDP_NONSURFACE_SIZE 0x2C0C
#define HDP_REG_COHERENCY_FLUSH_CNTL 0x54A0
#define HDP_TILING_CONFIG 0x2F3C
#define HDP_DEBUG1 0x2F34
#define MC_VM_AGP_TOP 0x2184
#define MC_VM_AGP_BOT 0x2188