#include <xe_drm.h>

Detailed Description

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.

The @type can be:

DRM_XE_TOPO_DSS_GEOMETRY - 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.
DRM_XE_TOPO_DSS_COMPUTE - 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.
DRM_XE_TOPO_L3_BANK - To query the mask of enabled L3 banks. This type may be omitted if the driver is unable to query the mask from the hardware.
DRM_XE_TOPO_EU_PER_DSS - 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 SIMD8 EUs. This type may be omitted if device doesn't have SIMD8 EUs.
DRM_XE_TOPO_SIMD16_EU_PER_DSS - To query the mask of SIMD16 Execution Units (EU) available per Dual Sub Slices (DSS). For example a query response containing the following in mask: SIMD16_EU_PER_DSS ff ff 00 00 00 00 00 00 means each DSS has 16 SIMD16 EUs. This type may be omitted if device doesn't have SIMD16 EUs.

Member Data Documentation

__u16 drm_xe_query_topology_mask::gt_id

@gt_id: GT ID the mask is associated with

__u8 drm_xe_query_topology_mask::mask[]

@mask: little-endian mask of @num_bytes

__u32 drm_xe_query_topology_mask::num_bytes

@num_bytes: number of bytes in requested mask

__u16 drm_xe_query_topology_mask::type

@type: type of mask

The documentation for this struct was generated from the following file: