drm/amdgpu: add PTL enable/query gfx control support for GC 9.4.4

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Introduce hardware detection, runtime state tracking and a
kgd->ptl_ctrl() callback to enable/disable/query PTL via the
PSP performance-monitor interface (commands 0xA0000000/1).
The driver now exposes PTL capability to KFD and keeps the
software state in sync with the hardware.

Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Perry Yuan 2026-02-09 00:42:03 +08:00 • committed by Alex Deucher

parent 8ce9c73104

commit f9f9fe3a7e

1 changed files with 34 additions and 0 deletions

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drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c

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