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drm/xe/pf: Always expose VRAM provisioning data on discrete GPUs

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Currently, VRAM provisioning data is only exposed if the device supports
LMTT. While it should not be possible to modify VRAM provisioning on
platforms without LMTT, it is still useful to be able to read the VRAM
provisioning data on all discrete GPU platforms.

Expose the VRAM debugfs attributes whenever running on dGFX, adjusting
file permissions to read only when LMTT is not available.

Signed-off-by: Lukasz Laguna <lukasz.laguna@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://lore.kernel.org/r/20251016122233.3789-1-lukasz.laguna@intel.com
This commit is contained in:
Lukasz Laguna
2025-10-16 14:22:33 +02:00
committed by Michal Wajdeczko
parent 59a2d3f38a
commit 37c8c8d9c6
2 changed files with 8 additions and 4 deletions
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9
drivers/gpu/drm/xe/xe_tile_sriov_pf_debugfs.c
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@@ -165,14 +165,17 @@ DEFINE_SRIOV_TILE_CONFIG_DEBUGFS_ATTRIBUTE(vram, lmem, u64, "%llu\n");
static void pf_add_config_attrs(struct xe_tile *tile, struct dentry *dent, unsigned int vfid)
{
struct xe_device *xe = tile->xe;
xe_tile_assert(tile, tile == extract_tile(dent));
xe_tile_assert(tile, vfid == extract_vfid(dent));
debugfs_create_file_unsafe(vfid ? "ggtt_quota" : "ggtt_spare",
0644, dent, dent, &ggtt_fops);
if (xe_device_has_lmtt(tile->xe))
if (IS_DGFX(xe))
debugfs_create_file_unsafe(vfid ? "vram_quota" : "vram_spare",
0644, dent, dent, &vram_fops);
xe_device_has_lmtt(xe) ? 0644 : 0444,
dent, dent, &vram_fops);
}
static void pf_populate_tile(struct xe_tile *tile, struct dentry *dent, unsigned int vfid)
@@ -188,7 +191,7 @@ static void pf_populate_tile(struct xe_tile *tile, struct dentry *dent, unsigned
drm_debugfs_create_files(pf_ggtt_info,
ARRAY_SIZE(pf_ggtt_info),
dent, minor);
if (xe_device_has_lmtt(xe))
if (IS_DGFX(xe))
drm_debugfs_create_files(pf_vram_info,
ARRAY_SIZE(pf_vram_info),
dent, minor);