From 7bdc53f925af085ffa0580f10489f82b36cc2f1c Mon Sep 17 00:00:00 2001 From: Yong Zhao Date: Fri, 15 Sep 2017 18:20:37 -0400 Subject: drm/amdgpu: Fix a bug in amdgpu_fill_buffer() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When max_bytes is not 8 bytes aligned and bo size is larger than max_bytes, the last 8 bytes in a ttm node may be left unchanged. For example, on pre SDMA 4.0, max_bytes = 0x1fffff, and the bo size is 0x200000, the problem will happen. In order to fix the problem, we separately store the max nums of PTEs/PDEs a single operation can set in amdgpu_vm_pte_funcs structure, rather than inferring it from bytes limit of SDMA constant fill, i.e. fill_max_bytes. Together with the fix, we replace the hard code value "10" in amdgpu_vm_bo_update_mapping() with the corresponding values from structure amdgpu_vm_pte_funcs. Signed-off-by: Yong Zhao Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 6c1133298b17..28d16781377f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -1606,10 +1606,11 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev, } else { /* set page commands needed */ - ndw += ncmds * 10; + ndw += ncmds * adev->vm_manager.vm_pte_funcs->set_pte_pde_num_dw; /* extra commands for begin/end fragments */ - ndw += 2 * 10 * adev->vm_manager.fragment_size; + ndw += 2 * adev->vm_manager.vm_pte_funcs->set_pte_pde_num_dw + * adev->vm_manager.fragment_size; params.func = amdgpu_vm_do_set_ptes; } -- cgit v1.2.2