drm/i915: allocate cmd ring in lmem

Prefer allocating the cmd ring from LMEM on dgfx.

Signed-off-by: Michel Thierry <[email protected]>
Signed-off-by: Matthew Auld <[email protected]>
Reviewed-by: Chris Wilson <[email protected]>
Signed-off-by: Chris Wilson <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Daniel Vetter <[email protected]>

Author: mthierry

drivers/gpu/drm/i915/gt/intel_ring.c

@@ -3,6 +3,7 @@
  * Copyright © 2019 Intel Corporation
  */
 
+#include "gem/i915_gem_lmem.h"
 #include "gem/i915_gem_object.h"
 
 #include "i915_drv.h"
@@ -108,8 +109,8 @@ static struct i915_vma *create_ring_vma(struct i915_ggtt *ggtt, int size)
 	struct drm_i915_gem_object *obj;
 	struct i915_vma *vma;
 
-	obj = ERR_PTR(-ENODEV);
-	if (i915_ggtt_has_aperture(ggtt))
+	obj = i915_gem_object_create_lmem(i915, size, I915_BO_ALLOC_VOLATILE);
+	if (IS_ERR(obj) && i915_ggtt_has_aperture(ggtt))
 		obj = i915_gem_object_create_stolen(i915, size);
 	if (IS_ERR(obj))
 		obj = i915_gem_object_create_internal(i915, size);