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>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
index ab9abfa1ba01..99e4e0cd72a6 100644
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -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);