drm/nv50: assume smaller tiles for bo moves

Somehow fixes some corruption seen in KDE..

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 2b97d97..c900aaa 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -529,8 +529,8 @@ nv50_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
        while (length) {
                u32 amount, stride, height;
 
-               amount  = min(length, (u64)(16 * 1024 * 1024));
-               stride  = 64 * 4;
+               amount  = min(length, (u64)(4 * 1024 * 1024));
+               stride  = 16 * 4;
                height  = amount / stride;
 
                if (new_mem->mem_type == TTM_PL_VRAM && nvbo->tile_flags) {
@@ -540,7 +540,7 @@ nv50_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
 
                        BEGIN_RING(chan, NvSubM2MF, 0x0200, 7);
                        OUT_RING  (chan, 0);
-                       OUT_RING  (chan, 0x20);
+                       OUT_RING  (chan, 0);
                        OUT_RING  (chan, stride);
                        OUT_RING  (chan, height);
                        OUT_RING  (chan, 1);
@@ -561,7 +561,7 @@ nv50_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
 
                        BEGIN_RING(chan, NvSubM2MF, 0x021c, 7);
                        OUT_RING  (chan, 0);
-                       OUT_RING  (chan, 0x20);
+                       OUT_RING  (chan, 0);
                        OUT_RING  (chan, stride);
                        OUT_RING  (chan, height);
                        OUT_RING  (chan, 1);