[PATCH] drm/amdgpu: Don't change preferred domian when fallback GTT v4

[Chunming Zhou]

v2: add sanity checking
v3: make code open
v4: also handle visible to invisible fallback

Change-Id: I2cf672ad36b8b4cc1a6b2e704f786bf6a155d9ce
Signed-off-by: Chunming Zhou <david1.zhou at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c    | 16 ++--------------
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 19 ++++++++++++++++---
 2 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 6e6570ff9f8b..8328684aee06 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -76,23 +76,11 @@ int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
 		}
 	}
 
-retry:
 	r = amdgpu_bo_create(adev, size, alignment, kernel, initial_domain,
 			     flags, NULL, resv, &bo);
 	if (r) {
-		if (r != -ERESTARTSYS) {
-			if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
-				flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
-				goto retry;
-			}
-
-			if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
-				initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
-				goto retry;
-			}
-			DRM_DEBUG("Failed to allocate GEM object (%ld, %d, %u, %d)\n",
-				  size, initial_domain, alignment, r);
-		}
+		DRM_DEBUG("Failed to allocate GEM object (%ld, %d, %u, %d)\n",
+			  size, initial_domain, alignment, r);
 		return r;
 	}
 	*obj = &bo->gem_base;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index b3310219e0ac..84c5e9db1b39 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -440,12 +440,25 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev,
 #endif
 
 	bo->tbo.bdev = &adev->mman.bdev;
-	amdgpu_ttm_placement_from_domain(bo, domain);
-
+retry:
+	amdgpu_ttm_placement_from_domain(bo, bo->preferred_domains);
 	r = ttm_bo_init_reserved(&adev->mman.bdev, &bo->tbo, size, type,
 				 &bo->placement, page_align, &ctx, acc_size,
 				 sg, resv, &amdgpu_ttm_bo_destroy);
-	if (unlikely(r != 0))
+
+	if (unlikely(r && r != -ERESTARTSYS)) {
+	    if (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
+		    bo->flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
+		    goto retry;
+	    } else if (bo->allowed_domains != bo->preferred_domains) {
+		    amdgpu_ttm_placement_from_domain(bo, bo->allowed_domains);
+		    r = ttm_bo_init_reserved(&adev->mman.bdev, &bo->tbo, size,
+					     type, &bo->placement, page_align,
+					     &ctx, acc_size, sg, resv,
+					     &amdgpu_ttm_bo_destroy);
+	    }
+	}
+	if (unlikely(r))
 		return r;
 
 	if (adev->gmc.visible_vram_size < adev->gmc.real_vram_size &&
-- 
2.14.1