Revert "drm/amdkfd: Add CMA API"

This reverts commit 9980ee2.

Signed-off-by: Leslie Shi <Yuliang.Shi@amd.com>
Reviewed-by: Asher Song  <asher.song@amd.com>

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

@@ -164,11 +164,6 @@ int amdgpu_amdkfd_flush_gpu_tlb_vmid(struct amdgpu_device *adev,
 int amdgpu_amdkfd_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
 				uint16_t pasid, enum TLB_FLUSH_TYPE flush_type);
 
-int amdgpu_amdkfd_copy_mem_to_mem(struct kgd_dev *kgd, struct kgd_mem *src_mem,
-		uint64_t src_offset, struct kgd_mem *dst_mem,
-		uint64_t dest_offset, uint64_t size, struct dma_fence **f,
-		uint64_t *actual_size);
-
 bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid);
 
 int amdgpu_amdkfd_pre_reset(struct amdgpu_device *adev);
@@ -292,7 +287,7 @@ uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *drm_priv);
 size_t amdgpu_amdkfd_get_available_memory(struct amdgpu_device *adev);
 int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
 		struct amdgpu_device *adev, uint64_t va, uint64_t size,
-		void *drm_priv, struct sg_table *sg, struct kgd_mem **mem,
+		void *drm_priv, struct kgd_mem **mem,
 		uint64_t *offset, uint32_t flags, bool criu_resume);
 int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
 		struct amdgpu_device *adev, struct kgd_mem *mem, void *drm_priv,

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

@@ -1668,11 +1668,12 @@ size_t amdgpu_amdkfd_get_available_memory(struct amdgpu_device *adev)
 
 int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
 		struct amdgpu_device *adev, uint64_t va, uint64_t size,
-		void *drm_priv, struct sg_table *sg, struct kgd_mem **mem,
+		void *drm_priv, struct kgd_mem **mem,
 		uint64_t *offset, uint32_t flags, bool criu_resume)
 {
 	struct amdgpu_vm *avm = drm_priv_to_vm(drm_priv);
 	enum ttm_bo_type bo_type = ttm_bo_type_device;
+	struct sg_table *sg = NULL;
 	uint64_t user_addr = 0;
 	struct amdgpu_bo *bo;
 	struct drm_gem_object *gobj = NULL;
@@ -1713,10 +1714,6 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
 		}
 	}
 
-	if (sg) {
-		alloc_domain = AMDGPU_GEM_DOMAIN_CPU;
-		bo_type = ttm_bo_type_sg;
-	}
 	*mem = kzalloc(sizeof(struct kgd_mem), GFP_KERNEL);
 	if (!*mem) {
 		ret = -ENOMEM;
@@ -3250,85 +3247,6 @@ int amdgpu_amdkfd_remove_gws_from_process(void *info, void *mem)
 	return 0;
 }
 
-int amdgpu_amdkfd_copy_mem_to_mem(struct kgd_dev *kgd, struct kgd_mem *src_mem,
-				  uint64_t src_offset, struct kgd_mem *dst_mem,
-				  uint64_t dst_offset, uint64_t size,
-				  struct dma_fence **f, uint64_t *actual_size)
-{
-	struct amdgpu_device *adev = NULL;
-	struct amdgpu_copy_mem src, dst;
-	struct ww_acquire_ctx ticket;
-	struct list_head list, duplicates;
-	struct ttm_validate_buffer resv_list[2];
-	struct dma_fence *fence = NULL;
-	int i, r;
-
-	if (!kgd || !src_mem || !dst_mem || !actual_size)
-		return -EINVAL;
-
-	*actual_size = 0;
-
-	adev = get_amdgpu_device(kgd);
-	INIT_LIST_HEAD(&list);
-	INIT_LIST_HEAD(&duplicates);
-
-	src.bo = &src_mem->bo->tbo;
-	dst.bo = &dst_mem->bo->tbo;
-	src.mem = &src.bo->mem;
-	dst.mem = &dst.bo->mem;
-	src.offset = src_offset;
-	dst.offset = dst_offset;
-
-	resv_list[0].bo = src.bo;
-	resv_list[1].bo = dst.bo;
-
-	for (i = 0; i < 2; i++) {
-		resv_list[i].num_shared = 1;
-		list_add_tail(&resv_list[i].head, &list);
-	}
-
-	r = ttm_eu_reserve_buffers(&ticket, &list, false, &duplicates);
-	if (r) {
-		pr_err("Copy buffer failed. Unable to reserve bo (%d)\n", r);
-		return r;
-	}
-
-	/* The process to which the Source and Dest BOs belong to could be
-	 * evicted and the BOs invalidated. So validate BOs before use
-	 */
-	r = amdgpu_amdkfd_bo_validate(src_mem->bo, src_mem->domain, false);
-	if (r) {
-		pr_err("CMA fail: SRC BO validate failed %d\n", r);
-		goto validate_fail;
-	}
-
-
-	r = amdgpu_amdkfd_bo_validate(dst_mem->bo, dst_mem->domain, false);
-	if (r) {
-		pr_err("CMA fail: DST BO validate failed %d\n", r);
-		goto validate_fail;
-	}
-
-
-	r = amdgpu_ttm_copy_mem_to_mem(adev, &src, &dst, size, false, NULL,
-				       &fence);
-	if (r)
-		pr_err("Copy buffer failed %d\n", r);
-	else
-		*actual_size = size;
-	if (fence) {
-		amdgpu_bo_fence(src_mem->bo, fence, true);
-		amdgpu_bo_fence(dst_mem->bo, fence, true);
-	}
-	if (f)
-		*f = dma_fence_get(fence);
-	dma_fence_put(fence);
-
-validate_fail:
-	ttm_eu_backoff_reservation(&ticket, &list);
-	return r;
-}
-
 /* Returns GPU-specific tiling mode information */
 int amdgpu_amdkfd_get_tile_config(struct amdgpu_device *adev,
 				struct tile_config *config)