From 1baa439fb2f4e586bf387cbbc515468ebb16e587 Mon Sep 17 00:00:00 2001 From: Chunming Zhou Date: Thu, 4 Aug 2016 13:59:32 +0800 Subject: [PATCH] drm/amdgpu: allocate shadow for pd/pt bo V2 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The pd/pt shadow bo will be used to backup page table, when gpu reset happens, we can restore the page table by them. V2: Free shadow bo. Signed-off-by: Chunming Zhou Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 7f385e78a265..1a474fa1f441 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -1328,7 +1328,8 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev, r = amdgpu_bo_create(adev, AMDGPU_VM_PTE_COUNT * 8, AMDGPU_GPU_PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_VRAM, - AMDGPU_GEM_CREATE_NO_CPU_ACCESS, + AMDGPU_GEM_CREATE_NO_CPU_ACCESS | + AMDGPU_GEM_CREATE_SHADOW, NULL, resv, &pt); if (r) goto error_free; @@ -1527,7 +1528,8 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm) r = amdgpu_bo_create(adev, pd_size, align, true, AMDGPU_GEM_DOMAIN_VRAM, - AMDGPU_GEM_CREATE_NO_CPU_ACCESS, + AMDGPU_GEM_CREATE_NO_CPU_ACCESS | + AMDGPU_GEM_CREATE_SHADOW, NULL, NULL, &vm->page_directory); if (r) goto error_free_sched_entity; @@ -1583,10 +1585,16 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm) kfree(mapping); } - for (i = 0; i < amdgpu_vm_num_pdes(adev); i++) + for (i = 0; i < amdgpu_vm_num_pdes(adev); i++) { + if (vm->page_tables[i].entry.robj && + vm->page_tables[i].entry.robj->shadow) + amdgpu_bo_unref(&vm->page_tables[i].entry.robj->shadow); amdgpu_bo_unref(&vm->page_tables[i].entry.robj); + } drm_free_large(vm->page_tables); + if (vm->page_directory->shadow) + amdgpu_bo_unref(&vm->page_directory->shadow); amdgpu_bo_unref(&vm->page_directory); fence_put(vm->page_directory_fence); } -- 2.30.2