drm/amdkfd: Clamp EOP queue size correctly on Gfx8

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Gfx8 HW incorrectly clamps CP_HQD_EOP_CONTROL.EOP_SIZE, which can
lead to scheduling deadlock due to SE EOP done counter overflow.

Enforce a EOP queue size limit which prevents the CP from sending
more than 0xFF events at a time.

Signed-off-by: Jay Cornwall <Jay.Cornwall@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

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Jay Cornwall 2017-08-15 23:00:14 -04:00 • committed by Oded Gabbay

parent 4ebc718274

commit af68d87cac

1 changed files with 9 additions and 2 deletions

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11

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

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