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drm/radeon/kms: fix regression rendering issue on R6XX/R7XX

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It seems that some R6XX/R7XX silently ignore HDP flush when
programmed through ring, this patch addback an ioctl callback
to allow R6XX/R7XX hw to perform such flush through MMIO in
order to fix a regression. For more details see:

http://bugzilla.kernel.org/show_bug.cgi?id=15186

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jerome Glisse
2010-02-04 20:36:39 +01:00
committed by Dave Airlie
parent c38c7b64a2
commit 062b389c87
4 changed files with 36 additions and 0 deletions
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3
drivers/gpu/drm/radeon/radeon_gem.c
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@@ -308,6 +308,9 @@ int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
}
robj = gobj->driver_private;
r = radeon_bo_wait(robj, NULL, false);
/* callback hw specific functions if any */
if (robj->rdev->asic->ioctl_wait_idle)
robj->rdev->asic->ioctl_wait_idle(robj->rdev, robj);
mutex_lock(&dev->struct_mutex);
drm_gem_object_unreference(gobj);
mutex_unlock(&dev->struct_mutex);