drm/amdgpu: stop mapping BOs to GTT

No need to map BOs to GTT on eviction and intermediate transfers any more.

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

1 files changed, 2 insertions, 17 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 4a34b61d44ef..fb9c6988f5f2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -199,7 +199,6 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
                 .lpfn = 0,
                 .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
         };
-        unsigned i;
 
         if (!amdgpu_ttm_bo_is_amdgpu_bo(bo)) {
                 placement->placement = &placements;
@@ -217,20 +216,6 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
                         amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_CPU);
                 } else {
                         amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_GTT);
-                        for (i = 0; i < abo->placement.num_placement; ++i) {
-                                if (!(abo->placements[i].flags &
-                                      TTM_PL_FLAG_TT))
-                                        continue;
-
-                                if (abo->placements[i].lpfn)
-                                        continue;
-
-                                /* set an upper limit to force directly
-                                 * allocating address space for the BO.
-                                 */
-                                abo->placements[i].lpfn =
-                                        adev->mc.gtt_size >> PAGE_SHIFT;
-                        }
                 }
                 break;
         case TTM_PL_TT:
@@ -391,7 +376,7 @@ static int amdgpu_move_vram_ram(struct ttm_buffer_object *bo,
         placement.num_busy_placement = 1;
         placement.busy_placement = &placements;
         placements.fpfn = 0;
-        placements.lpfn = adev->mc.gtt_size >> PAGE_SHIFT;
+        placements.lpfn = 0;
         placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
         r = ttm_bo_mem_space(bo, &placement, &tmp_mem,
                              interruptible, no_wait_gpu);
@@ -438,7 +423,7 @@ static int amdgpu_move_ram_vram(struct ttm_buffer_object *bo,
         placement.num_busy_placement = 1;
         placement.busy_placement = &placements;
         placements.fpfn = 0;
-        placements.lpfn = adev->mc.gtt_size >> PAGE_SHIFT;
+        placements.lpfn = 0;
         placements.flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
         r = ttm_bo_mem_space(bo, &placement, &tmp_mem,
                              interruptible, no_wait_gpu);