diff options
| author | Francois Dugast <francois.dugast@intel.com> | 2023-06-22 15:32:03 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2023-12-21 19:34:59 +0300 |
| commit | 1bc56a934f11cc9bb859116d30e828ccf2df54cf (patch) | |
| tree | 460b987e0aee37a8b5e51462949559f7db1ceb9b /include/uapi/drm | |
| parent | 4f082f2c3a37d1b2fb90e048cc61616885b69648 (diff) | |
| download | linux-1bc56a934f11cc9bb859116d30e828ccf2df54cf.tar.xz | |
drm/xe: Document topology mask query
Provide information on the types of topology masks that can be
queried and add some examples.
Signed-off-by: Francois Dugast <francois.dugast@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'include/uapi/drm')
| -rw-r--r-- | include/uapi/drm/xe_drm.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/uapi/drm/xe_drm.h b/include/uapi/drm/xe_drm.h index be62b3a06db9..fef5e26aad2a 100644 --- a/include/uapi/drm/xe_drm.h +++ b/include/uapi/drm/xe_drm.h @@ -212,6 +212,9 @@ struct drm_xe_query_gts { /** * struct drm_xe_query_topology_mask - describe the topology mask of a GT * + * This is the hardware topology which reflects the internal physical + * structure of the GPU. + * * If a query is made with a struct drm_xe_device_query where .query * is equal to DRM_XE_DEVICE_QUERY_GT_TOPOLOGY, then the reply uses * struct drm_xe_query_topology_mask in .data. @@ -220,8 +223,29 @@ struct drm_xe_query_topology_mask { /** @gt_id: GT ID the mask is associated with */ __u16 gt_id; + /* + * To query the mask of Dual Sub Slices (DSS) available for geometry + * operations. For example a query response containing the following + * in mask: + * DSS_GEOMETRY ff ff ff ff 00 00 00 00 + * means 32 DSS are available for geometry. + */ #define XE_TOPO_DSS_GEOMETRY (1 << 0) + /* + * To query the mask of Dual Sub Slices (DSS) available for compute + * operations. For example a query response containing the following + * in mask: + * DSS_COMPUTE ff ff ff ff 00 00 00 00 + * means 32 DSS are available for compute. + */ #define XE_TOPO_DSS_COMPUTE (1 << 1) + /* + * To query the mask of Execution Units (EU) available per Dual Sub + * Slices (DSS). For example a query response containing the following + * in mask: + * EU_PER_DSS ff ff 00 00 00 00 00 00 + * means each DSS has 16 EU. + */ #define XE_TOPO_EU_PER_DSS (1 << 2) /** @type: type of mask */ __u16 type; |