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>
This commit is contained in:
Mattias Rönnblom 2018-09-18 14:45:06 +02:00 committed by Jerin Jacob
parent 46a186b1f0
commit 4540ee9c68
2 changed files with 117 additions and 2 deletions

View File

@ -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;

View File

@ -9,8 +9,36 @@
#define DSW_PMD_NAME RTE_STR(event_dsw)
struct dsw_evdev {
struct rte_eventdev_data *data;
/* 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