Convert all the drm_i915_gem_set_domain bits to proper kernel doc.
Suggested-by: Daniel Vetter <dan...@ffwll.ch>
Signed-off-by: Matthew Auld <matthew.a...@intel.com>
Cc: Thomas Hellström <thomas.hellst...@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursu...@linux.intel.com>
Cc: Jordan Justen <jordan.l.jus...@intel.com>
Cc: Kenneth Graunke <kenn...@whitecape.org>
Cc: Jason Ekstrand <ja...@jlekstrand.net>
Cc: Daniel Vetter <daniel.vet...@ffwll.ch>
Cc: Ramalingam C <ramalinga...@intel.com>
---
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
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