[PATCH v2 7/7] drm/i915: Return error value when bo not in LMEM for discrete

[Matthew Auld]

From: Mohammed Khajapasha <mohammed.khajapasha at intel.com>

Return EREMOTE value when frame buffer object is not backed by LMEM
for discrete. If Local memory is supported by hardware the framebuffer
backing gem objects should be from local memory.

Signed-off-by: Mohammed Khajapasha <mohammed.khajapasha at intel.com>
Signed-off-by: Matthew Auld <matthew.auld at intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Daniel Vetter <daniel at ffwll.ch>
---
 drivers/gpu/drm/i915/display/intel_display.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index e246e5cf7586..6280ba7f4c17 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -63,6 +63,7 @@
 #include "display/intel_vdsc.h"
 #include "display/intel_vrr.h"
 
+#include "gem/i915_gem_lmem.h"
 #include "gem/i915_gem_object.h"
 
 #include "gt/intel_rps.h"
@@ -11278,11 +11279,20 @@ intel_user_framebuffer_create(struct drm_device *dev,
 	struct drm_framebuffer *fb;
 	struct drm_i915_gem_object *obj;
 	struct drm_mode_fb_cmd2 mode_cmd = *user_mode_cmd;
+	struct drm_i915_private *i915;
 
 	obj = i915_gem_object_lookup(filp, mode_cmd.handles[0]);
 	if (!obj)
 		return ERR_PTR(-ENOENT);
 
+	/* object is backed with LMEM for discrete */
+	i915 = to_i915(obj->base.dev);
+	if (HAS_LMEM(i915) && !i915_gem_object_is_lmem(obj)) {
+		/* object is "remote", not in local memory */
+		i915_gem_object_put(obj);
+		return ERR_PTR(-EREMOTE);
+	}
+
 	fb = intel_framebuffer_create(obj, &mode_cmd);
 	i915_gem_object_put(obj);
 
-- 
2.26.3