drm/amdgpu: Program IH_VMID_LUT_INDEX register on GFX 12.1

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For querying VMID <-> PASID mapping on GFX 12.1, we need to first
program the IH_VMID_LUT_INDEX before fetching the LUT mapping. Without
this TLB flush may not work.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Michael Chen <michael.chen@amd.com>
Reviewed-by:  Alex Sierra <alex.sierra@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Mukul Joshi 2025-07-23 22:34:11 -04:00 • committed by Alex Deucher

parent d3336c935e

commit 44fc86f2a3

1 changed files with 12 additions and 2 deletions

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drivers/gpu/drm/amd/amdgpu/gmc_v12_1.c

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