Commit 1490434f authored by Michel Dänzer's avatar Michel Dänzer Committed by Alex Deucher

drm/radeon: Use write-combined CPU mappings of ring buffers with PCIe

PCI GART doesn't support unsnooped access. AGP GART already uses
write-combined CPU mappings.
Signed-off-by: default avatarMichel Dänzer <michel.daenzer@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 5dc35532
...@@ -640,7 +640,9 @@ int radeon_ring_init(struct radeon_device *rdev, struct radeon_ring *ring, unsig ...@@ -640,7 +640,9 @@ int radeon_ring_init(struct radeon_device *rdev, struct radeon_ring *ring, unsig
/* Allocate ring buffer */ /* Allocate ring buffer */
if (ring->ring_obj == NULL) { if (ring->ring_obj == NULL) {
r = radeon_bo_create(rdev, ring->ring_size, PAGE_SIZE, true, r = radeon_bo_create(rdev, ring->ring_size, PAGE_SIZE, true,
RADEON_GEM_DOMAIN_GTT, 0, RADEON_GEM_DOMAIN_GTT,
(rdev->flags & RADEON_IS_PCIE) ?
RADEON_GEM_GTT_WC : 0,
NULL, &ring->ring_obj); NULL, &ring->ring_obj);
if (r) { if (r) {
dev_err(rdev->dev, "(%d) ring create failed\n", r); dev_err(rdev->dev, "(%d) ring create failed\n", r);
......
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