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drm/xe: Drop skip_mtcfg descriptor flag

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The skip_mtcfg descriptor flag is unused and expected to remain that
way.  Drop it.

Single-tile platforms are already identified by a zero/unset value for
max_remote_tiles and don't need/use this flag to avoid trying to read
out multi-tile configuration.  PVC is currently the only multi-tile
platform, and PVC uses MTCFG so this flag is not set.  The current
expectation is that if/when future multi-tile platforms show up, they
will also use the MTCFG register in the same manner as PVC, meaning that
they won't have any need to set 'skip_mtcfg' either.

Even if a future platform does change how multi-tile configuration gets
probed (e.g., using some different register), simply doing an early return
from xe_info_probe_tile_count() would probably not be the correct logic
to handle that anyway.

Bspec: 53146
Reviewed-by: Xin Wang <x.wang@intel.com>
Link: https://patch.msgid.link/20260416-no-skip-mtcfg-v1-1-c8ea26d81530@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
This commit is contained in:
Matt Roper 2026-04-16 14:17:09 -07:00
parent 0479934ec7
commit ae314535c2
3 changed files with 0 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/xe/xe_device_types.h
View File

@ -218,8 +218,6 @@ struct xe_device {
u8 probe_display:1;
/** @info.skip_guc_pc: Skip GuC based PM feature init */
u8 skip_guc_pc:1;
/** @info.skip_mtcfg: skip Multi-Tile configuration from MTCFG register */
u8 skip_mtcfg:1;
/** @info.skip_pcode: skip access to PCODE uC */
u8 skip_pcode:1;
/** @info.needs_shared_vf_gt_wq: needs shared GT WQ on VF */

4
drivers/gpu/drm/xe/xe_pci.c
View File

@ -767,7 +767,6 @@ static int xe_info_init_early(struct xe_device *xe,
desc->has_sriov;
xe->info.has_sysctrl = desc->has_sysctrl;
xe->info.skip_guc_pc = desc->skip_guc_pc;
xe->info.skip_mtcfg = desc->skip_mtcfg;
xe->info.skip_pcode = desc->skip_pcode;
xe->info.needs_scratch = desc->needs_scratch;
xe->info.needs_shared_vf_gt_wq = desc->needs_shared_vf_gt_wq;
@ -809,9 +808,6 @@ static void xe_info_probe_tile_count(struct xe_device *xe)
if (xe->info.tile_count == 1)
return;
if (xe->info.skip_mtcfg)
return;
mmio = xe_root_tile_mmio(xe);
/*

1
drivers/gpu/drm/xe/xe_pci_types.h
View File

@ -60,7 +60,6 @@ struct xe_device_desc {
u8 has_sysctrl:1;
u8 needs_scratch:1;
u8 skip_guc_pc:1;
u8 skip_mtcfg:1;
u8 skip_pcode:1;
u8 needs_shared_vf_gt_wq:1;
};