2 files changed, 13 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index 1b32a5ab972d..396baba0141a 100644
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -112,6 +112,18 @@ static int radeon_cs_get_ring(struct radeon_cs_parser *p, u32 ring, s32 priority
                 } else
                         p->ring = RADEON_RING_TYPE_GFX_INDEX;
                 break;
+        case RADEON_CS_RING_DMA:
+                if (p->rdev->family >= CHIP_CAYMAN) {
+                        if (p->priority > 0)
+                                p->ring = R600_RING_TYPE_DMA_INDEX;
+                        else
+                                p->ring = CAYMAN_RING_TYPE_DMA1_INDEX;
+                } else if (p->rdev->family >= CHIP_R600) {
+                        p->ring = R600_RING_TYPE_DMA_INDEX;
+                } else {
+                        return -EINVAL;
+                }
+                break;
         }
         return 0;
 }
diff --git a/include/uapi/drm/radeon_drm.h b/include/uapi/drm/radeon_drm.h
index 5645a878faec..eeda91774c8a 100644
--- a/include/uapi/drm/radeon_drm.h
+++ b/include/uapi/drm/radeon_drm.h
@@ -917,6 +917,7 @@ struct drm_radeon_gem_va {
 /* The second dword of RADEON_CHUNK_ID_FLAGS is a uint32 that sets the ring type */
 #define RADEON_CS_RING_GFX          0
 #define RADEON_CS_RING_COMPUTE      1
+#define RADEON_CS_RING_DMA          2
 /* The third dword of RADEON_CHUNK_ID_FLAGS is a sint32 that sets the priority */
 /* 0 = normal, + = higher priority, - = lower priority */