drm/amdgpu: Cleanup UALink XA entries on manager stop

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amdgpu_ualink_manager_stop() only called xa_destroy() on the exporter,
importer and handle-invalid xarrays, which frees the internal tree but
not the node objects. Entries still present at teardown thus leaked the
nodes, left NPA addresses mapped and kept exported BOs pinned.

Free the entries in all three xarrays explicitly, without exchanging any
NPA protocol messages (the F/W is already halted by
amdgpu_ualink_sw_fini()): mark connections down so the drained workers
and teardown take the message-free path, drain in-flight exporter
cleanup work to empty handle_invalid_xa, then free the remaining
importer and exporter entries before the NPA allocator is torn down.

Also factor the shared importer-node release into
amdgpu_ualink_release_imp_xa_node(), drop/drain stale remote interrupts
in the IRQ handler when the accelerator is not ACTIVE, and refuse outbound
messages in amdgpu_ualink_send_command() when not ACTIVE so an in-flight
cleanup worker cannot emit onto torn-down peer/SDMA state or block
waiting for a response that will never arrive.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Mukul Joshi 2026-08-06 18:09:24 -04:00 • committed by Alex Deucher

parent 889ee43d55

commit c8c049bcc6

1 changed files with 141 additions and 12 deletions

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

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