drm/radeon/kms/cayman/blit: specify CP_COHER_CNTL2 with surface_sync

CP_COHER_CNTL2 has to be programmed manually when submitting packets
to the ring directly rather than programmed via an IB.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/evergreen_blit_kms.c b/drivers/gpu/drm/radeon/evergreen_blit_kms.c
index 879f7335029e..551e76f283f7 100644
--- a/drivers/gpu/drm/radeon/evergreen_blit_kms.c
+++ b/drivers/gpu/drm/radeon/evergreen_blit_kms.c
@@ -94,6 +94,15 @@ cp_set_surface_sync(struct radeon_device *rdev,
         else
                 cp_coher_size = ((size + 255) >> 8);
 
+        if (rdev->family >= CHIP_CAYMAN) {
+                /* CP_COHER_CNTL2 has to be set manually when submitting a surface_sync
+                 * to the RB directly. For IBs, the CP programs this as part of the
+                 * surface_sync packet.
+                 */
+                radeon_ring_write(rdev, PACKET3(PACKET3_SET_CONFIG_REG, 1));
+                radeon_ring_write(rdev, (0x85e8 - PACKET3_SET_CONFIG_REG_START) >> 2);
+                radeon_ring_write(rdev, 0); /* CP_COHER_CNTL2 */
+        }
         radeon_ring_write(rdev, PACKET3(PACKET3_SURFACE_SYNC, 3));
         radeon_ring_write(rdev, sync_type);
         radeon_ring_write(rdev, cp_coher_size);
@@ -621,6 +630,8 @@ int evergreen_blit_init(struct radeon_device *rdev)
         rdev->r600_blit.ring_size_common += 10; /* fence emit for done copy */
 
         rdev->r600_blit.ring_size_per_loop = 74;
+        if (rdev->family >= CHIP_CAYMAN)
+                rdev->r600_blit.ring_size_per_loop += 9; /* additional DWs for surface sync */
 
         rdev->r600_blit.max_dim = 16384;