drm/amdgpu: convert ptl_hw_supported to enum

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Convert ptl_hw_supported to enum with three states:
- AMDGPU_PTL_HW_UNINIT: not yet initialized
- AMDGPU_PTL_HW_SUPPORTED: initialized and supported
- AMDGPU_PTL_HW_NOT_SUPPORTED: initialized and not supported

This allows skipping PTL initialization attempts when hardware is
known to not support it, avoiding repeated initialization failures
after GPU resets.

v2:move ptl_hw_supported_state to AMDGPU_PTL_HW_NOT_SUPPORTED regardless
of error code during first time initialization. Print init fail log when
error code is not EOPNOTSUPP.

Signed-off-by: Victor Zhao <Victor.Zhao@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Victor Zhao 2025-12-18 18:42:04 +08:00 • committed by Alex Deucher

parent 1c760249a5

commit 6085f8289e

4 changed files with 33 additions and 12 deletions

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6

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

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21

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

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11

drivers/gpu/drm/amd/amdkfd/kfd_chardev.c

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9

drivers/gpu/drm/amd/include/amdgpu_ptl.h

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