[PATCH 1/1] drm/amdgpu/gfx8: add support kernel interface queue(KIQ)

[zhoucm1]

On 2016年12月20日 17:48, Xiangliang Yu wrote:
> +	if (kiq->eop_obj == NULL) {
> +		r = amdgpu_bo_create(adev,
> +				     MEC_HPD_SIZE,
> +				     PAGE_SIZE, true,
> +				     AMDGPU_GEM_DOMAIN_GTT, 0, NULL, NULL,
> +				     &kiq->eop_obj);
> +		if (r) {
> +			dev_warn(adev->dev, "(%d) create HDP EOP bo failed\n", r);
> +			return r;
> +		}
> +	}
> +
> +	r = amdgpu_bo_reserve(kiq->eop_obj, false);
> +	if (unlikely(r != 0)) {
> +		gfx_v8_0_kiq_fini(adev);
> +		return r;
> +	}
> +
> +	r = amdgpu_bo_pin(kiq->eop_obj, AMDGPU_GEM_DOMAIN_GTT,
> +			  &kiq->eop_gpu_addr);
> +	if (r) {
> +		dev_warn(adev->dev, "(%d) pin HDP EOP bo failed\n", r);
> +		gfx_v8_0_kiq_fini(adev);
> +		return r;
> +	}
> +
> +	r = amdgpu_bo_kmap(kiq->eop_obj, (void **)&hpd);
you can use amdgpu_bo_create/free_kernel helper to do these.

Regards,
David Zhou