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drm/amdgpu: Clean up defunct soft reset from ASIC reset code path

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Soft reset means resetting IP blocks individually using
a hardware interconnect (SRBM or GRBM) without assistance
from firmware.

Soft reset is a useful tool for implementing GPU recovery,
eg. it is already successfully used for SDMA queue resets.
It should be used by a GPU recovery method instead of
being called directly from the ASIC reset code path.

Currently, this is only used on Carrizo and Stoney,
but doesn't work well and fails on those chips.
A subsequent commit will add a working GFX8 recovery
implementation after the cleanups.

Note that this commit only cleans up the ASIC reset path,
which also unblocks more opportunities for cleanup for
the various IP blocks. Those will be done in subsequent commits.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Timur Kristóf 2026-06-17 21:14:13 +02:00 • committed by Alex Deucher
commit a86f14aebb
10 changed files with 2 additions and 258 deletions
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