event/sw: add start stop and close functions

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>

diff --git a/drivers/event/sw/sw_evdev.c b/drivers/event/sw/sw_evdev.c
index ea08b2c..a301138 100644 (file)
--- a/drivers/event/sw/sw_evdev.c
+++ b/drivers/event/sw/sw_evdev.c
@@ -441,6 +441,79 @@ sw_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *info)
        *info = evdev_sw_info;
 }
 
+static int
+sw_start(struct rte_eventdev *dev)
+{
+       unsigned int i, j;
+       struct sw_evdev *sw = sw_pmd_priv(dev);
+       /* check all ports are set up */
+       for (i = 0; i < sw->port_count; i++)
+               if (sw->ports[i].rx_worker_ring == NULL) {
+                       SW_LOG_ERR("Port %d not configured\n", i);
+                       return -ESTALE;
+               }
+
+       /* check all queues are configured and mapped to ports*/
+       for (i = 0; i < sw->qid_count; i++)
+               if (sw->qids[i].iq[0] == NULL ||
+                               sw->qids[i].cq_num_mapped_cqs == 0) {
+                       SW_LOG_ERR("Queue %d not configured\n", i);
+                       return -ENOLINK;
+               }
+
+       /* build up our prioritized array of qids */
+       /* We don't use qsort here, as if all/multiple entries have the same
+        * priority, the result is non-deterministic. From "man 3 qsort":
+        * "If two members compare as equal, their order in the sorted
+        * array is undefined."
+        */
+       uint32_t qidx = 0;
+       for (j = 0; j <= RTE_EVENT_DEV_PRIORITY_LOWEST; j++) {
+               for (i = 0; i < sw->qid_count; i++) {
+                       if (sw->qids[i].priority == j) {
+                               sw->qids_prioritized[qidx] = &sw->qids[i];
+                               qidx++;
+                       }
+               }
+       }
+
+       rte_smp_wmb();
+       sw->started = 1;
+
+       return 0;
+}
+
+static void
+sw_stop(struct rte_eventdev *dev)
+{
+       struct sw_evdev *sw = sw_pmd_priv(dev);
+       sw->started = 0;
+       rte_smp_wmb();
+}
+
+static int
+sw_close(struct rte_eventdev *dev)
+{
+       struct sw_evdev *sw = sw_pmd_priv(dev);
+       uint32_t i;
+
+       for (i = 0; i < sw->qid_count; i++)
+               sw_queue_release(dev, i);
+       sw->qid_count = 0;
+
+       for (i = 0; i < sw->port_count; i++)
+               sw_port_release(&sw->ports[i]);
+       sw->port_count = 0;
+
+       memset(&sw->stats, 0, sizeof(sw->stats));
+       sw->sched_called = 0;
+       sw->sched_no_iq_enqueues = 0;
+       sw->sched_no_cq_enqueues = 0;
+       sw->sched_cq_qid_called = 0;
+
+       return 0;
+}
+
 static int
 assign_numa_node(const char *key __rte_unused, const char *value, void *opaque)
 {
@@ -477,6 +550,9 @@ sw_probe(const char *name, const char *params)
        static const struct rte_eventdev_ops evdev_sw_ops = {
                        .dev_configure = sw_dev_configure,
                        .dev_infos_get = sw_info_get,
+                       .dev_close = sw_close,
+                       .dev_start = sw_start,
+                       .dev_stop = sw_stop,
 
                        .queue_def_conf = sw_queue_def_conf,
                        .queue_setup = sw_queue_setup,