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drm/radeon: Only flush HDP cache from idle ioctl if BO is in VRAM 

The HDP cache only applies to CPU access to VRAM.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer 2014-08-01 17:22:09 +09:00 committed by Alex Deucher
parent 6b57f20cb5
commit 404a6a512f
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/radeon/radeon_gem.c
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@ -358,15 +358,17 @@ int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
struct drm_gem_object *gobj;
struct radeon_bo *robj;
int r;
uint32_t cur_placement = 0;
gobj = drm_gem_object_lookup(dev, filp, args->handle);
if (gobj == NULL) {
return -ENOENT;
}
robj = gem_to_radeon_bo(gobj);
r = radeon_bo_wait(robj, NULL, false);
r = radeon_bo_wait(robj, &cur_placement, false);
/* Flush HDP cache via MMIO if necessary */
if (rdev->asic->mmio_hdp_flush)
if (rdev->asic->mmio_hdp_flush &&
radeon_mem_type_to_domain(cur_placement) == RADEON_GEM_DOMAIN_VRAM)
robj->rdev->asic->mmio_hdp_flush(rdev);
drm_gem_object_unreference_unlocked(gobj);
r = radeon_gem_handle_lockup(rdev, r);