Re: [PATCH 1/9] drm/i915: Allow use of get_dma_address for stolen backed objects

[Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>]

On 14/12/15 05:46, ankitprasad.r.sharma@intel.com wrote:
> From: Ankitprasad Sharma <ankitprasad.r.sharma@intel.com>
>
> i915_gem_object_get_dma_address function is used to retrieve the dma address
> of a particular page so as to map it in a given GTT entry for CPU access.
> This function would be used for stolen backed objects also for tasks like
> pwrite,  clearing of the pages etc. So the obj->get_page.sg needs to be
> initialized for the stolen objects also.
>
> Signed-off-by: Ankitprasad Sharma <ankitprasad.r.sharma@intel.com>
> ---
>   drivers/gpu/drm/i915/i915_gem_stolen.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
> index 598ed2f..5384767 100644
> --- a/drivers/gpu/drm/i915/i915_gem_stolen.c
> +++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
> @@ -569,6 +569,9 @@ _i915_gem_object_create_stolen(struct drm_device *dev,
>   	if (obj->pages == NULL)
>   		goto cleanup;
>
> +	obj->get_page.sg = obj->pages->sgl;
> +	obj->get_page.last = 0;
> +
>   	i915_gem_object_pin_pages(obj);
>   	obj->stolen = stolen;
>
>

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Regards,

Tvrtko
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