drm/amdgpu: Handle connection reset

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This patch adds connection reset handling. There can be
two case which signal connection reset:
1. Receiving a HELLO message from a remote GPU, when the
   connection state is already setup, signals the remote
   GPU underwent a reset.
2. If no response received for a NPA-REQ/NPA_REVOKE
   message.

In either of the two case, we cleanup all exported and
imported ualink handles exchanged with the remote GPU.

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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Mukul Joshi 2026-06-03 18:20:28 -04:00 • committed by Alex Deucher

parent a35edc0fee

commit 69ad55ef41

1 changed files with 202 additions and 5 deletions

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207

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

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