drm/radeon: use DMA engine for VM page table updates on SI

DMA engine has special packets to facilitate this and it also keeps
the 3D engine free for other things.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index 8b8f218..3ea0475 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -1695,7 +1695,7 @@ static struct radeon_asic si_asic = {
        .vm = {
                .init = &si_vm_init,
                .fini = &si_vm_fini,
-               .pt_ring_index = RADEON_RING_TYPE_GFX_INDEX,
+               .pt_ring_index = R600_RING_TYPE_DMA_INDEX,
                .set_page = &si_vm_set_page,
        },
        .ring = {