[PATCH] drm/amdgpu: use amdgpu_bo_[create|free]_kernel for wb

[Edward O'Callaghan]

Acked-by: Edward O'Callaghan <funfunctor at folklore1984.net>

On 10/22/2016 06:31 AM, Alex Deucher wrote:
> Rather than open coding it.
> 
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 37 ++++++------------------------
>  1 file changed, 7 insertions(+), 30 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index b7b6542..314295f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -443,13 +443,9 @@ void amdgpu_doorbell_get_kfd_info(struct amdgpu_device *adev,
>  static void amdgpu_wb_fini(struct amdgpu_device *adev)
>  {
>  	if (adev->wb.wb_obj) {
> -		if (!amdgpu_bo_reserve(adev->wb.wb_obj, false)) {
> -			amdgpu_bo_kunmap(adev->wb.wb_obj);
> -			amdgpu_bo_unpin(adev->wb.wb_obj);
> -			amdgpu_bo_unreserve(adev->wb.wb_obj);
> -		}
> -		amdgpu_bo_unref(&adev->wb.wb_obj);
> -		adev->wb.wb = NULL;
> +		amdgpu_bo_free_kernel(&adev->wb.wb_obj,
> +				      &adev->wb.gpu_addr,
> +				      (void **)&adev->wb.wb);
>  		adev->wb.wb_obj = NULL;
>  	}
>  }
> @@ -468,33 +464,14 @@ static int amdgpu_wb_init(struct amdgpu_device *adev)
>  	int r;
>  
>  	if (adev->wb.wb_obj == NULL) {
> -		r = amdgpu_bo_create(adev, AMDGPU_MAX_WB * 4, PAGE_SIZE, true,
> -				     AMDGPU_GEM_DOMAIN_GTT, 0,  NULL, NULL,
> -				     &adev->wb.wb_obj);
> +		r = amdgpu_bo_create_kernel(adev, AMDGPU_MAX_WB * 4,
> +					    PAGE_SIZE, AMDGPU_GEM_DOMAIN_GTT,
> +					    &adev->wb.wb_obj, &adev->wb.gpu_addr,
> +					    (void **)&adev->wb.wb);
>  		if (r) {
>  			dev_warn(adev->dev, "(%d) create WB bo failed\n", r);
>  			return r;
>  		}
> -		r = amdgpu_bo_reserve(adev->wb.wb_obj, false);
> -		if (unlikely(r != 0)) {
> -			amdgpu_wb_fini(adev);
> -			return r;
> -		}
> -		r = amdgpu_bo_pin(adev->wb.wb_obj, AMDGPU_GEM_DOMAIN_GTT,
> -				&adev->wb.gpu_addr);
> -		if (r) {
> -			amdgpu_bo_unreserve(adev->wb.wb_obj);
> -			dev_warn(adev->dev, "(%d) pin WB bo failed\n", r);
> -			amdgpu_wb_fini(adev);
> -			return r;
> -		}
> -		r = amdgpu_bo_kmap(adev->wb.wb_obj, (void **)&adev->wb.wb);
> -		amdgpu_bo_unreserve(adev->wb.wb_obj);
> -		if (r) {
> -			dev_warn(adev->dev, "(%d) map WB bo failed\n", r);
> -			amdgpu_wb_fini(adev);
> -			return r;
> -		}
>  
>  		adev->wb.num_wb = AMDGPU_MAX_WB;
>  		memset(&adev->wb.used, 0, sizeof(adev->wb.used));
> 

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