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drm/xe/uapi: Add DRM_XE_QUERY_CONFIG_FLAG_HAS_CPU_ADDR_MIRROR

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Add the DRM_XE_QUERY_CONFIG_FLAG_HAS_CPU_ADDR_MIRROR device query flag,
which indicates whether the device supports CPU address mirroring. The
intent is for UMDs to use this query to determine if a VM can be set up
with CPU address mirroring. This flag is implemented by checking if the
device supports GPU faults.

v7:
 - Only report enabled if CONFIG_DRM_GPUSVM is selected (CI)

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306012657.3505757-20-matthew.brost@intel.com
This commit is contained in:
Matthew Brost 2025-03-05 17:26:44 -08:00
parent c73b2cbd10
commit 77613a2e10
2 changed files with 7 additions and 1 deletions
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5
drivers/gpu/drm/xe/xe_query.c
View File

@ -338,8 +338,11 @@ static int query_config(struct xe_device *xe, struct drm_xe_device_query *query)
config->info[DRM_XE_QUERY_CONFIG_REV_AND_DEVICE_ID] =
xe->info.devid | (xe->info.revid << 16);
if (xe_device_get_root_tile(xe)->mem.vram.usable_size)
config->info[DRM_XE_QUERY_CONFIG_FLAGS] =
config->info[DRM_XE_QUERY_CONFIG_FLAGS] |=
DRM_XE_QUERY_CONFIG_FLAG_HAS_VRAM;
if (xe->info.has_usm && IS_ENABLED(CONFIG_DRM_GPUSVM))
config->info[DRM_XE_QUERY_CONFIG_FLAGS] |=
DRM_XE_QUERY_CONFIG_FLAG_HAS_CPU_ADDR_MIRROR;
config->info[DRM_XE_QUERY_CONFIG_FLAGS] |=
DRM_XE_QUERY_CONFIG_FLAG_HAS_LOW_LATENCY;
config->info[DRM_XE_QUERY_CONFIG_MIN_ALIGNMENT] =

3
include/uapi/drm/xe_drm.h
View File

@ -395,6 +395,8 @@ struct drm_xe_query_mem_regions {
* has usable VRAM
* - %DRM_XE_QUERY_CONFIG_FLAG_HAS_LOW_LATENCY - Flag is set if the device
* has low latency hint support
* - %DRM_XE_QUERY_CONFIG_FLAG_HAS_CPU_ADDR_MIRROR - Flag is set if the
* device has CPU address mirroring support
* - %DRM_XE_QUERY_CONFIG_MIN_ALIGNMENT - Minimal memory alignment
* required by this device, typically SZ_4K or SZ_64K
* - %DRM_XE_QUERY_CONFIG_VA_BITS - Maximum bits of a virtual address
@ -412,6 +414,7 @@ struct drm_xe_query_config {
#define DRM_XE_QUERY_CONFIG_FLAGS 1
#define DRM_XE_QUERY_CONFIG_FLAG_HAS_VRAM (1 << 0)
#define DRM_XE_QUERY_CONFIG_FLAG_HAS_LOW_LATENCY (1 << 1)
#define DRM_XE_QUERY_CONFIG_FLAG_HAS_CPU_ADDR_MIRROR (1 << 2)
#define DRM_XE_QUERY_CONFIG_MIN_ALIGNMENT 2
#define DRM_XE_QUERY_CONFIG_VA_BITS 3
#define DRM_XE_QUERY_CONFIG_MAX_EXEC_QUEUE_PRIORITY 4