Commit 030e416b authored Jan 04, 2015 by Ben Goz Committed by Oded Gabbay Jan 04, 2015

drm/amdkfd: Load mqd to hqd in non-HWS mode



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>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>

parent b64b8afc

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

+12 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}