[Intel-gfx] [PATCH v3 6/7] drm/i915/display: Check mappable aperture when pinning preallocated vma

[Matthew Auld]

From: CQ Tang <cq.tang at intel.com>

When system does not have mappable aperture, ggtt->mappable_end=0. In
this case if we pass PIN_MAPPABLE when pinning vma, the pinning code
will return -ENOSPC. So conditionally set PIN_MAPPABLE if HAS_GMCH().

Suggested-by: Chris P Wilson <chris.p.wilson at intel.com>
Signed-off-by: CQ Tang <cq.tang at intel.com>
Cc: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
Cc: Ap Kamal <kamal.ap at intel.com>
Reviewed-by: Matthew Auld <matthew.auld at intel.com>
Signed-off-by: Matthew Auld <matthew.auld at intel.com>
Cc: Thomas Hellström <thomas.hellstrom at linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Acked-by: Nirmoy Das <nirmoy.das at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_plane_initial.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_plane_initial.c b/drivers/gpu/drm/i915/display/intel_plane_initial.c
index 5227e5b35206..f797fcef18fc 100644
--- a/drivers/gpu/drm/i915/display/intel_plane_initial.c
+++ b/drivers/gpu/drm/i915/display/intel_plane_initial.c
@@ -51,6 +51,7 @@ initial_plane_vma(struct drm_i915_private *i915,
 	struct drm_i915_gem_object *obj;
 	struct i915_vma *vma;
 	u32 base, size;
+	u64 pinctl;
 
 	if (!mem || plane_config->size == 0)
 		return NULL;
@@ -101,7 +102,10 @@ initial_plane_vma(struct drm_i915_private *i915,
 	if (IS_ERR(vma))
 		goto err_obj;
 
-	if (i915_ggtt_pin(vma, NULL, 0, PIN_MAPPABLE | PIN_OFFSET_FIXED | base))
+	pinctl = PIN_GLOBAL | PIN_OFFSET_FIXED | base;
+	if (HAS_GMCH(i915))
+		pinctl |= PIN_MAPPABLE;
+	if (i915_vma_pin(vma, 0, 0, pinctl))
 		goto err_obj;
 
 	if (i915_gem_object_is_tiled(obj) &&
-- 
2.34.1