On 2021-07-05 at 14:53:09 +0100, Matthew Auld wrote:
> Convert all the drm_i915_gem_set_domain bits to proper kernel doc.
LGTM.
Reviewed-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
>
> Suggested-by: Daniel Vetter <daniel@xxxxxxxx>
> Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
> Cc: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
> Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx>
> Cc: Jordan Justen <jordan.l.justen@xxxxxxxxx>
> Cc: Kenneth Graunke <kenneth@xxxxxxxxxxxxx>
> Cc: Jason Ekstrand <jason@xxxxxxxxxxxxxx>
> Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Cc: Ramalingam C <ramalingam.c@xxxxxxxxx>
> ---
> include/uapi/drm/i915_drm.h | 34 +++++++++++++++++++++++++++++++---
> 1 file changed, 31 insertions(+), 3 deletions(-)
>
> diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
> index a4faceeb8c32..6f94e5e7569a 100644
> --- a/include/uapi/drm/i915_drm.h
> +++ b/include/uapi/drm/i915_drm.h
> @@ -880,14 +880,42 @@ struct drm_i915_gem_mmap_offset {
> __u64 extensions;
> };
>
> +
> +/**
> + * struct drm_i915_gem_set_domain - Adjust the objects write or read domain, in
> + * preparation for accessing the pages via some CPU domain.
> + *
> + * Specifying a new write or read domain will flush the object out of the
> + * previous domain(if required), before then updating the objects domain
> + * tracking with the new domain.
> + *
> + * Note this might involve waiting for the object first if it is still active on
> + * the GPU.
> + *
> + * Supported values for @read_domains and @write_domain:
> + *
> + * - I915_GEM_DOMAIN_WC: Uncached write-combined domain
> + * - I915_GEM_DOMAIN_CPU: CPU cache domain
> + * - I915_GEM_DOMAIN_GTT: Mappable aperture domain
> + *
> + * All other domains are rejected.
> + *
> + */
> struct drm_i915_gem_set_domain {
> - /** Handle for the object */
> + /** @handle: Handle for the object. */
> __u32 handle;
>
> - /** New read domains */
> + /**
> + * @read_domains: New read domains.
> + */
> __u32 read_domains;
>
> - /** New write domain */
> + /**
> + * @write_domain: New write domain.
> + *
> + * Note that having something in the write domain implies it's in the
> + * read domain, and only that read domain.
> + */
> __u32 write_domain;
> };
>
> --
> 2.26.3
>
