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(parent: 4ebc718) | patch
drm/amdkfd: Clamp EOP queue size correctly on Gfx8
authorJay Cornwall <Jay.Cornwall@amd.com>
Wed, 16 Aug 2017 03:00:14 +0000 (23:00 -0400)
committerOded Gabbay <oded.gabbay@gmail.com>
Wed, 16 Aug 2017 03:00:14 +0000 (23:00 -0400)
commitaf68d87cac0664c9118e76727e4273eab56deb83
treeefa137d188a0a008f6b8ec41dd76a78664cb63bctree | snapshot (tar.gz zip)
parent4ebc7182743a4bef47cdd9d3e9f08cff943faa4fcommit | diff
drm/amdkfd: Clamp EOP queue size correctly on Gfx8

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>
drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c diff | blob | blame | history