diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 5baefb548a29..b8fcb6c55698 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -1439,6 +1439,51 @@ int amdgpu_vm_handle_moved(struct amdgpu_device *adev, } /** + * amdgpu_vm_flush_compute_tlb - Flush TLB on compute VM + * + * @adev: amdgpu_device pointer + * @vm: requested vm + * @flush_type: flush type + * @xcc_mask: mask of XCCs that belong to the compute partition in need of a TLB flush. + * + * Flush TLB if needed for a compute VM. + * + * Returns: + * 0 for success. + */ +int amdgpu_vm_flush_compute_tlb(struct amdgpu_device *adev, + struct amdgpu_vm *vm, + uint32_t flush_type, + uint32_t xcc_mask) +{ + uint64_t tlb_seq = amdgpu_vm_tlb_seq(vm); + bool all_hub = false; + int xcc = 0, r = 0; + + WARN_ON_ONCE(!vm->is_compute_context); + + /* + * It can be that we race and lose here, but that is extremely unlikely + * and the worst thing which could happen is that we flush the changes + * into the TLB once more which is harmless. + */ + if (atomic64_xchg(&vm->kfd_last_flushed_seq, tlb_seq) == tlb_seq) + return 0; + + if (adev->family == AMDGPU_FAMILY_AI || + adev->family == AMDGPU_FAMILY_RV) + all_hub = true; + + for_each_inst(xcc, xcc_mask) { + r = amdgpu_gmc_flush_gpu_tlb_pasid(adev, vm->pasid, flush_type, + all_hub, xcc); + if (r) + break; + } + return r; +} + +/** * amdgpu_vm_bo_add - add a bo to a specific vm * * @adev: amdgpu_device pointer |