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authorDave Airlie <airlied@redhat.com>2011-05-19 14:14:42 +1000
committerDave Airlie <airlied@gmail.com>2011-05-22 20:25:27 +1000
commit0b65f83f9d2fab47b9b6040fe75fc2cfc73032d4 (patch)
tree0b1bed04eafc415a9f0b7068c39609af78a6d2eb /drivers/gpu/drm/radeon/ni.c
parentf25a5c63bfa017498c9adecb24d649ae96ba5c68 (diff)
drm/radeon/cayman: setup hdp to invalidate and flush when asked
On cayman we need to set the bit to cause HDP flushes to invalidate the HDP cache also. Reviewed-by: Alex Deucher <alexdeucher@gmail.com> cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/ni.c')
-rw-r--r--drivers/gpu/drm/radeon/ni.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 7aade20f63a..57d3d6c208d 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -931,6 +931,10 @@ static void cayman_gpu_init(struct radeon_device *rdev)
WREG32(CB_PERF_CTR3_SEL_0, 0);
WREG32(CB_PERF_CTR3_SEL_1, 0);
+ tmp = RREG32(HDP_MISC_CNTL);
+ tmp |= HDP_FLUSH_INVALIDATE_CACHE;
+ WREG32(HDP_MISC_CNTL, tmp);
+
hdp_host_path_cntl = RREG32(HDP_HOST_PATH_CNTL);
WREG32(HDP_HOST_PATH_CNTL, hdp_host_path_cntl);