event/dsw: add device and queue configuration

Allow queue- and device-level configuration for and retrieval of
contextual information from a DSW event device.

Signed-off-by: Mattias Rönnblom <mattias.ronnblom@ericsson.com>
Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>

diff --git a/drivers/event/dsw/dsw_evdev.c b/drivers/event/dsw/dsw_evdev.c
index 6990bbc..1500d24 100644 (file)
--- a/drivers/event/dsw/dsw_evdev.c
+++ b/drivers/event/dsw/dsw_evdev.c
@@ -9,6 +9,91 @@
 
 #define EVENTDEV_NAME_DSW_PMD event_dsw
 
+static int
+dsw_queue_setup(struct rte_eventdev *dev, uint8_t queue_id,
+               const struct rte_event_queue_conf *conf)
+{
+       struct dsw_evdev *dsw = dsw_pmd_priv(dev);
+       struct dsw_queue *queue = &dsw->queues[queue_id];
+
+       if (RTE_EVENT_QUEUE_CFG_ALL_TYPES & conf->event_queue_cfg)
+               return -ENOTSUP;
+
+       if (conf->schedule_type == RTE_SCHED_TYPE_ORDERED)
+               return -ENOTSUP;
+
+       /* SINGLE_LINK is better off treated as TYPE_ATOMIC, since it
+        * avoid the "fake" TYPE_PARALLEL flow_id assignment. Since
+        * the queue will only have a single serving port, no
+        * migration will ever happen, so the extra TYPE_ATOMIC
+        * migration overhead is avoided.
+        */
+       if (RTE_EVENT_QUEUE_CFG_SINGLE_LINK & conf->event_queue_cfg)
+               queue->schedule_type = RTE_SCHED_TYPE_ATOMIC;
+       else /* atomic or parallel */
+               queue->schedule_type = conf->schedule_type;
+
+       queue->num_serving_ports = 0;
+
+       return 0;
+}
+
+static void
+dsw_queue_def_conf(struct rte_eventdev *dev __rte_unused,
+                  uint8_t queue_id __rte_unused,
+                  struct rte_event_queue_conf *queue_conf)
+{
+       *queue_conf = (struct rte_event_queue_conf) {
+               .nb_atomic_flows = 4096,
+               .schedule_type = RTE_SCHED_TYPE_ATOMIC,
+               .priority = RTE_EVENT_DEV_PRIORITY_NORMAL
+       };
+}
+
+static void
+dsw_queue_release(struct rte_eventdev *dev __rte_unused,
+                 uint8_t queue_id __rte_unused)
+{
+}
+
+static void
+dsw_info_get(struct rte_eventdev *dev __rte_unused,
+            struct rte_event_dev_info *info)
+{
+       *info = (struct rte_event_dev_info) {
+               .driver_name = DSW_PMD_NAME,
+               .max_event_queues = DSW_MAX_QUEUES,
+               .max_event_queue_flows = DSW_MAX_FLOWS,
+               .max_event_queue_priority_levels = 1,
+               .max_event_priority_levels = 1,
+               .max_event_ports = DSW_MAX_PORTS,
+               .max_event_port_dequeue_depth = DSW_MAX_PORT_DEQUEUE_DEPTH,
+               .max_event_port_enqueue_depth = DSW_MAX_PORT_ENQUEUE_DEPTH,
+               .max_num_events = DSW_MAX_EVENTS,
+               .event_dev_cap = RTE_EVENT_DEV_CAP_BURST_MODE|
+               RTE_EVENT_DEV_CAP_DISTRIBUTED_SCHED
+       };
+}
+
+static int
+dsw_configure(const struct rte_eventdev *dev)
+{
+       struct dsw_evdev *dsw = dsw_pmd_priv(dev);
+       const struct rte_event_dev_config *conf = &dev->data->dev_conf;
+
+       dsw->num_queues = conf->nb_event_queues;
+
+       return 0;
+}
+
+static struct rte_eventdev_ops dsw_evdev_ops = {
+       .queue_setup = dsw_queue_setup,
+       .queue_def_conf = dsw_queue_def_conf,
+       .queue_release = dsw_queue_release,
+       .dev_infos_get = dsw_info_get,
+       .dev_configure = dsw_configure,
+};
+
 static int
 dsw_probe(struct rte_vdev_device *vdev)
 {
@@ -23,6 +108,8 @@ dsw_probe(struct rte_vdev_device *vdev)
        if (dev == NULL)
                return -EFAULT;
 
+       dev->dev_ops = &dsw_evdev_ops;
+
        if (rte_eal_process_type() != RTE_PROC_PRIMARY)
                return 0;
 

diff --git a/drivers/event/dsw/dsw_evdev.h b/drivers/event/dsw/dsw_evdev.h
index 9a0f4c3..5eda8d1 100644 (file)
--- a/drivers/event/dsw/dsw_evdev.h
+++ b/drivers/event/dsw/dsw_evdev.h
@@ -9,8 +9,36 @@
 
 #define DSW_PMD_NAME RTE_STR(event_dsw)
 
+/* Code changes are required to allow more ports. */
+#define DSW_MAX_PORTS (64)
+#define DSW_MAX_PORT_DEQUEUE_DEPTH (128)
+#define DSW_MAX_PORT_ENQUEUE_DEPTH (128)
+
+#define DSW_MAX_QUEUES (16)
+
+#define DSW_MAX_EVENTS (16384)
+
+/* Code changes are required to allow more flows than 32k. */
+#define DSW_MAX_FLOWS_BITS (15)
+#define DSW_MAX_FLOWS (1<<(DSW_MAX_FLOWS_BITS))
+#define DSW_MAX_FLOWS_MASK (DSW_MAX_FLOWS-1)
+
+struct dsw_queue {
+       uint8_t schedule_type;
+       uint16_t num_serving_ports;
+};
+
 struct dsw_evdev {
        struct rte_eventdev_data *data;
+
+       struct dsw_queue queues[DSW_MAX_QUEUES];
+       uint8_t num_queues;
 };
 
+static inline struct dsw_evdev *
+dsw_pmd_priv(const struct rte_eventdev *eventdev)
+{
+       return eventdev->data->dev_private;
+}
+
 #endif