Commit 62eefd10 authored by Yifan Zhang's avatar Yifan Zhang Committed by Alex Deucher
Browse files

drm/amdgpu: use CPU for page table update if SDMA is unavailable 



avoid using SDMA if it is unavailable.

Signed-off-by: default avatarYifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: default avatarTim Huang <tim.huang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 847e387e

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

+6 −0
Original line number Diff line number Diff line
@@ -2397,6 +2397,7 @@ void amdgpu_vm_set_task_info(struct amdgpu_vm *vm) 
int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm,

		   int32_t xcp_id)

{

	struct amdgpu_ip_block *ip_block;

	struct amdgpu_bo *root_bo;

	struct amdgpu_bo_vm *root;

	int r, i;
@@ -2426,6 +2427,11 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm, 
	vm->use_cpu_for_update = !!(adev->vm_manager.vm_update_mode &

				    AMDGPU_VM_USE_CPU_FOR_GFX);



	/* use CPU for page table update if SDMA is unavailable */

	ip_block = amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_SDMA);

	if (!ip_block || ip_block->status.valid == false)

		vm->use_cpu_for_update = true;



	DRM_DEBUG_DRIVER("VM update mode is %s\n",

			 vm->use_cpu_for_update ? "CPU" : "SDMA");

	WARN_ONCE((vm->use_cpu_for_update &&