drm/amdgpu: LSDMA check PIO error status

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Check LSDMA PIO error status bits after each transfer completes to
detect silent copy failures caused by issues such as IFoE (Infinity
Fabric over Ethernet) errors.

The following error conditions are checked:
- Write return NACK / general error
- Read return NACK / general error
- Invalid address
- Zero count
- DRAM ECC error

Log the error via dev_warn() and clear only the set error bits
(write-1-to-clear) so that subsequent transfers can proceed once the
underlying issue is resolved.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Philip Yang 2026-04-07 23:02:38 -04:00 • committed by Alex Deucher

parent a3b523ed4c

commit 763b6076a9

1 changed files with 26 additions and 1 deletions

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drivers/gpu/drm/amd/amdgpu/lsdma_v7_1.c

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