On Fri, Aug 1, 2014 at 4:22 AM, Michel Dänzer <michel@xxxxxxxxxxx> wrote:
> From: Michel Dänzer <michel.daenzer@xxxxxxx>
>
> The HDP cache only applies to CPU access to VRAM.
>
> Signed-off-by: Michel Dänzer <michel.daenzer@xxxxxxx>
Applied to my 3.17 branch.
Thanks!
> ---
> drivers/gpu/drm/radeon/radeon_gem.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
> index a350cf9..8f2cb58 100644
> --- a/drivers/gpu/drm/radeon/radeon_gem.c
> +++ b/drivers/gpu/drm/radeon/radeon_gem.c
> @@ -359,15 +359,17 @@ 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);
> --
> 2.0.1
>
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