On Sun, Jan 4, 2015 at 2:53 PM, Oded Gabbay oded.gabbay@amd.com wrote:
From: Ben Goz ben.goz@amd.com
This patch fixes a bug in DQM, where the MQD of a newly created compute queue is not loaded to an HQD slot. As a result, the CP never reads packets from this queue.
This bug happens only in non-HWS (hardware scheduling) mode. In HWS mode, the CP is responsible of loading MQDs to HQDs slots.
Signed-off-by: Ben Goz ben.goz@amd.com Reviewed-by: Oded Gabbay oded.gabbay@amd.com
Acked-by: Alex Deucher alexander.deucher@amd.com
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c index f44d673..3b08ed6 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c @@ -272,6 +272,18 @@ static int create_compute_queue_nocpsch(struct device_queue_manager *dqm, return retval; }
pr_debug("kfd: loading mqd to hqd on pipe (%d) queue (%d)\n",q->pipe,q->queue);retval = mqd->load_mqd(mqd, q->mqd, q->pipe,q->queue, q->properties.write_ptr);if (retval != 0) {deallocate_hqd(dqm, q);mqd->uninit_mqd(mqd, q->mqd, q->mqd_mem_obj);return retval;}return 0;}
-- 2.1.0
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