drm/radeon/kms: add some new ring params to better handle other ring types

Some rptr/wptrs fields have different offsets and not all rings are pm4
so add a new nop field.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <deathsimple@vodafone.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index bed56c7..3ef2c58 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -1075,7 +1075,8 @@
 	ring_size = (1 << (rb_bufsz + 1)) * 4;
 	r100_cp_load_microcode(rdev);
 	r = radeon_ring_init(rdev, ring, ring_size, RADEON_WB_CP_RPTR_OFFSET,
-			     RADEON_CP_RB_RPTR, RADEON_CP_RB_WPTR);
+			     RADEON_CP_RB_RPTR, RADEON_CP_RB_WPTR,
+			     0, 0x7fffff, RADEON_CP_PACKET2);
 	if (r) {
 		return r;
 	}