drm/amdgpu: Extend logical to device instance lookup to all devices

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A subset of supported devices can have a mismatch between the logical and
device engine instance numbers which the driver currently solves by a
combination of lookup table generated at driver init time, and a
conditionally set vfunc checked and used at runtime to do the lookup.

As the requirement to do these lookups is relatively widespread in the
code base, plus the fact the mapping table is already allocated for all
possible hw ips and instances, we can significantly streamline them by
initializing the said lookup table unconditionally to the predominant
"identity map" (logical instance numbers equal to device instances),
and allow affected parts to re-configure the table based on their
configuration.

The effect is that for each lookup site we replace the conditional
followed by a indirect function call with a simple two-dimensional table
lookup.

Bloat-o-meter agrees the savings are significant:

add/remove: 13/12 grow/shrink: 23/279 up/down: 51626/-198973 (-147347)
...
Total: Before=10139692, After=9992345, chg -1.45%

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Tvrtko Ursulin 2026-09-15 12:49:33 +01:00 • committed by Alex Deucher

parent b73a495872

commit 789551e08e

34 changed files with 92 additions and 75 deletions

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1

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gc_9_4_3.c

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drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c

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

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

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drivers/gpu/drm/amd/amdgpu/amdgpu_ip.h

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

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

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

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

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

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drivers/gpu/drm/amd/amdgpu/gfxhub_v1_2.c

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drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c

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drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c

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drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c

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drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

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drivers/gpu/drm/amd/amdgpu/jpeg_v4_0_3.c

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drivers/gpu/drm/amd/amdgpu/jpeg_v4_0_5.c

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drivers/gpu/drm/amd/amdgpu/jpeg_v5_0_0.c

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drivers/gpu/drm/amd/amdgpu/jpeg_v5_0_1.c

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drivers/gpu/drm/amd/amdgpu/nbio_v7_9.c

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drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c

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drivers/gpu/drm/amd/amdgpu/soc15_common.h

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drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c

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drivers/gpu/drm/amd/amdgpu/vcn_v2_5.c

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drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c

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drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c

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drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c

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drivers/gpu/drm/amd/amdgpu/vcn_v4_0_5.c

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drivers/gpu/drm/amd/amdgpu/vcn_v5_0_0.c

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drivers/gpu/drm/amd/amdgpu/vcn_v5_0_1.c

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

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drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_12_ppt.c

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drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c

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drivers/gpu/drm/amd/ras/ras_mgr/ras_sys.h

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