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anv: Add support to DRM_XE_GEM_CREATE_FLAG_NO_COMPRESSION

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When this flag is set, it gives a hint to KMD to skip some operations around
compressed buffers, like copying the auxiliary buffer to smem during eviction.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38425>
This commit is contained in:
José Roberto de Souza 2025-11-11 09:25:51 -08:00
parent 6df105d3ff
commit f91de58818
3 changed files with 7 additions and 0 deletions
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1
src/intel/dev/intel_device_info.py
View file

@ -310,6 +310,7 @@ Struct("intel_device_info",
Member("bool", "has_set_pat_uapi"),
Member("bool", "has_indirect_unroll"),
Member("bool", "supports_low_latency_hint"),
Member("bool", "xe2_has_no_compression_hint"),
Member("bool", "has_coarse_pixel_primitive_and_cb", compiler_field=True,
comment=dedent("""\

2
src/intel/dev/xe/intel_device_info.c
View file

@ -75,6 +75,8 @@ xe_query_config(int fd, struct intel_device_info *devinfo)
devinfo->has_local_mem = true;
if (config->info[DRM_XE_QUERY_CONFIG_FLAGS] & DRM_XE_QUERY_CONFIG_FLAG_HAS_LOW_LATENCY)
devinfo->supports_low_latency_hint = true;
if (config->info[DRM_XE_QUERY_CONFIG_FLAGS] & DRM_XE_QUERY_CONFIG_FLAG_HAS_NO_COMPRESSION_HINT)
devinfo->xe2_has_no_compression_hint = true;
if (!has_gmd_ip_version(devinfo))
devinfo->revision = (config->info[DRM_XE_QUERY_CONFIG_REV_AND_DEVICE_ID] >> 16) & 0xFFFF;

4
src/intel/vulkan/xe/anv_kmd_backend.c
View file

@ -66,6 +66,10 @@ xe_gem_create(struct anv_device *device,
device->physical->vram_non_mappable.size > 0)
flags |= DRM_XE_GEM_CREATE_FLAG_NEEDS_VISIBLE_VRAM;
if ((alloc_flags & ANV_BO_ALLOC_COMPRESSED) == 0 &&
device->info->xe2_has_no_compression_hint)
flags |= DRM_XE_GEM_CREATE_FLAG_NO_COMPRESSION;
struct drm_xe_gem_create gem_create = {
/* From xe_drm.h: If a VM is specified, this BO must:
* 1. Only ever be bound to that VM.