drm/amdgpu: don't init GDS pool if GDS size is 0 (v2)

SI cards don't expose GDS as a separate pool.  The CP manages
GDS and the UMDs use special CP packets to allocate GDS memory.

v2: drop extra whitespace change

bug: https://bugzilla.kernel.org/show_bug.cgi?id=194867

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 27 insertions, 18 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 987f8f02348d..244bb9aacf86 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1158,27 +1158,33 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
         adev->gds.oa.gfx_partition_size = adev->gds.oa.gfx_partition_size << AMDGPU_OA_SHIFT;
         adev->gds.oa.cs_partition_size = adev->gds.oa.cs_partition_size << AMDGPU_OA_SHIFT;
         /* GDS Memory */
-        r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_GDS,
-                                adev->gds.mem.total_size >> PAGE_SHIFT);
-        if (r) {
-                DRM_ERROR("Failed initializing GDS heap.\n");
-                return r;
+        if (adev->gds.mem.total_size) {
+                r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_GDS,
+                                   adev->gds.mem.total_size >> PAGE_SHIFT);
+                if (r) {
+                        DRM_ERROR("Failed initializing GDS heap.\n");
+                        return r;
+                }
         }
 
         /* GWS */
-        r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_GWS,
-                                adev->gds.gws.total_size >> PAGE_SHIFT);
-        if (r) {
-                DRM_ERROR("Failed initializing gws heap.\n");
-                return r;
+        if (adev->gds.gws.total_size) {
+                r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_GWS,
+                                   adev->gds.gws.total_size >> PAGE_SHIFT);
+                if (r) {
+                        DRM_ERROR("Failed initializing gws heap.\n");
+                        return r;
+                }
         }
 
         /* OA */
-        r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_OA,
-                                adev->gds.oa.total_size >> PAGE_SHIFT);
-        if (r) {
-                DRM_ERROR("Failed initializing oa heap.\n");
-                return r;
+        if (adev->gds.oa.total_size) {
+                r = ttm_bo_init_mm(&adev->mman.bdev, AMDGPU_PL_OA,
+                                   adev->gds.oa.total_size >> PAGE_SHIFT);
+                if (r) {
+                        DRM_ERROR("Failed initializing oa heap.\n");
+                        return r;
+                }
         }
 
         r = amdgpu_ttm_debugfs_init(adev);
@@ -1206,9 +1212,12 @@ void amdgpu_ttm_fini(struct amdgpu_device *adev)
         }
         ttm_bo_clean_mm(&adev->mman.bdev, TTM_PL_VRAM);
         ttm_bo_clean_mm(&adev->mman.bdev, TTM_PL_TT);
-        ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_GDS);
-        ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_GWS);
-        ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_OA);
+        if (adev->gds.mem.total_size)
+                ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_GDS);
+        if (adev->gds.gws.total_size)
+                ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_GWS);
+        if (adev->gds.oa.total_size)
+                ttm_bo_clean_mm(&adev->mman.bdev, AMDGPU_PL_OA);
         ttm_bo_device_release(&adev->mman.bdev);
         amdgpu_gart_fini(adev);
         amdgpu_ttm_global_fini(adev);