drm/amdgpu: do not pass ttm_resource_manager to gtt_mgr

Do not allow exported amdgpu_gtt_mgr_*() to accept
any ttm_resource_manager pointer. Also there is no need
to force other module to call a ttm function just to
eventually call gtt_mgr functions.

v4: remove unused adev.
v3: upcast mgr from ttm resopurce manager instead of
getting it from adev.
v2: pass adev's gtt_mgr instead of adev.

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

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -4371,7 +4371,7 @@ static int amdgpu_device_reset_sriov(struct amdgpu_device *adev,
 
 	amdgpu_virt_init_data_exchange(adev);
 	/* we need recover gart prior to run SMC/CP/SDMA resume */
-	amdgpu_gtt_mgr_recover(ttm_manager_type(&adev->mman.bdev, TTM_PL_TT));
+	amdgpu_gtt_mgr_recover(&adev->mman.gtt_mgr);
 
 	r = amdgpu_device_fw_loading(adev);
 	if (r)
@@ -4691,7 +4691,7 @@ int amdgpu_do_asic_reset(struct list_head *device_list_handle,
 					amdgpu_inc_vram_lost(tmp_adev);
 				}
 
-				r = amdgpu_gtt_mgr_recover(ttm_manager_type(&tmp_adev->mman.bdev, TTM_PL_TT));
+				r = amdgpu_gtt_mgr_recover(&tmp_adev->mman.gtt_mgr);
 				if (r)
 					goto out;
 

drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c

@@ -77,10 +77,8 @@ static ssize_t amdgpu_mem_info_gtt_used_show(struct device *dev,
 {
 	struct drm_device *ddev = dev_get_drvdata(dev);
 	struct amdgpu_device *adev = drm_to_adev(ddev);
-	struct ttm_resource_manager *man;
 
-	man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT);
-	return sysfs_emit(buf, "%llu\n", amdgpu_gtt_mgr_usage(man));
+	return sysfs_emit(buf, "%llu\n", amdgpu_gtt_mgr_usage(&adev->mman.gtt_mgr));
 }
 
 static DEVICE_ATTR(mem_info_gtt_total, S_IRUGO,
@@ -206,30 +204,27 @@ static void amdgpu_gtt_mgr_del(struct ttm_resource_manager *man,
 /**
  * amdgpu_gtt_mgr_usage - return usage of GTT domain
  *
- * @man: TTM memory type manager
+ * @mgr: amdgpu_gtt_mgr pointer
  *
  * Return how many bytes are used in the GTT domain
  */
-uint64_t amdgpu_gtt_mgr_usage(struct ttm_resource_manager *man)
+uint64_t amdgpu_gtt_mgr_usage(struct amdgpu_gtt_mgr *mgr)
 {
-	struct amdgpu_gtt_mgr *mgr = to_gtt_mgr(man);
-
 	return atomic64_read(&mgr->used) * PAGE_SIZE;
 }
 
 /**
  * amdgpu_gtt_mgr_recover - re-init gart
  *
- * @man: TTM memory type manager
+ * @mgr: amdgpu_gtt_mgr pointer
  *
  * Re-init the gart for each known BO in the GTT.
  */
-int amdgpu_gtt_mgr_recover(struct ttm_resource_manager *man)
+int amdgpu_gtt_mgr_recover(struct amdgpu_gtt_mgr *mgr)
 {
-	struct amdgpu_gtt_mgr *mgr = to_gtt_mgr(man);
-	struct amdgpu_device *adev;
 	struct amdgpu_gtt_node *node;
 	struct drm_mm_node *mm_node;
+	struct amdgpu_device *adev;
 	int r = 0;
 
 	adev = container_of(mgr, typeof(*adev), mman.gtt_mgr);

drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c

@@ -678,7 +678,7 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 		ui64 = amdgpu_vram_mgr_vis_usage(ttm_manager_type(&adev->mman.bdev, TTM_PL_VRAM));
 		return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
 	case AMDGPU_INFO_GTT_USAGE:
-		ui64 = amdgpu_gtt_mgr_usage(ttm_manager_type(&adev->mman.bdev, TTM_PL_TT));
+		ui64 = amdgpu_gtt_mgr_usage(&adev->mman.gtt_mgr);
 		return copy_to_user(out, &ui64, min(size, 8u)) ? -EFAULT : 0;
 	case AMDGPU_INFO_GDS_CONFIG: {
 		struct drm_amdgpu_info_gds gds_info;
@@ -738,7 +738,7 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 		mem.gtt.usable_heap_size = mem.gtt.total_heap_size -
 			atomic64_read(&adev->gart_pin_size);
 		mem.gtt.heap_usage =
-			amdgpu_gtt_mgr_usage(gtt_man);
+			amdgpu_gtt_mgr_usage(&adev->mman.gtt_mgr);
 		mem.gtt.max_allocation = mem.gtt.usable_heap_size * 3 / 4;
 
 		return copy_to_user(out, &mem,

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h

@@ -114,8 +114,8 @@ int amdgpu_vram_mgr_init(struct amdgpu_device *adev);
 void amdgpu_vram_mgr_fini(struct amdgpu_device *adev);
 
 bool amdgpu_gtt_mgr_has_gart_addr(struct ttm_resource *mem);
-uint64_t amdgpu_gtt_mgr_usage(struct ttm_resource_manager *man);
-int amdgpu_gtt_mgr_recover(struct ttm_resource_manager *man);
+uint64_t amdgpu_gtt_mgr_usage(struct amdgpu_gtt_mgr *mgr);
+int amdgpu_gtt_mgr_recover(struct amdgpu_gtt_mgr *mgr);
 
 uint64_t amdgpu_preempt_mgr_usage(struct ttm_resource_manager *man);