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

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avoid using SDMA if it is unavailable.

Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: Tim Huang <tim.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yifan Zhang 2024-07-30 10:45:08 +08:00 committed by Alex Deucher
parent 847e387e00
commit 62eefd10ac
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@ -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 &&