struct process_local_port_data
dlb_port[DLB_MAX_NUM_PORTS][NUM_DLB_PORT_TYPES];
+static inline uint16_t
+dlb_event_enqueue_delayed(void *event_port,
+ const struct rte_event events[]);
+
+static inline uint16_t
+dlb_event_enqueue_burst_delayed(void *event_port,
+ const struct rte_event events[],
+ uint16_t num);
+
+static inline uint16_t
+dlb_event_enqueue_new_burst_delayed(void *event_port,
+ const struct rte_event events[],
+ uint16_t num);
+
+static inline uint16_t
+dlb_event_enqueue_forward_burst_delayed(void *event_port,
+ const struct rte_event events[],
+ uint16_t num);
+
static int
dlb_hw_query_resources(struct dlb_eventdev *dlb)
{
qm_port->dequeue_depth = dequeue_depth;
+ /* When using the reserved token scheme, token_pop_thresh is
+ * initially 2 * dequeue_depth. Once the tokens are reserved,
+ * the enqueue code re-assigns it to dequeue_depth.
+ */
+ qm_port->token_pop_thresh = cq_depth;
+
+ /* When the deferred scheduling vdev arg is selected, use deferred pop
+ * for all single-entry CQs.
+ */
+ if (cfg.cq_depth == 1 || (cfg.cq_depth == 2 && use_rsvd_token_scheme)) {
+ if (dlb->defer_sched)
+ qm_port->token_pop_mode = DEFERRED_POP;
+ }
+
+ /* The default enqueue functions do not include delayed-pop support for
+ * performance reasons.
+ */
+ if (qm_port->token_pop_mode == DELAYED_POP) {
+ dlb->event_dev->enqueue = dlb_event_enqueue_delayed;
+ dlb->event_dev->enqueue_burst =
+ dlb_event_enqueue_burst_delayed;
+ dlb->event_dev->enqueue_new_burst =
+ dlb_event_enqueue_new_burst_delayed;
+ dlb->event_dev->enqueue_forward_burst =
+ dlb_event_enqueue_forward_burst_delayed;
+ }
+
qm_port->owed_tokens = 0;
qm_port->issued_releases = 0;
qm_port->dequeue_depth = dequeue_depth;
+ /* Directed ports are auto-pop, by default. */
+ qm_port->token_pop_mode = AUTO_POP;
qm_port->owed_tokens = 0;
qm_port->issued_releases = 0;
}
}
+static inline void
+dlb_construct_token_pop_qe(struct dlb_port *qm_port, int idx)
+{
+ struct dlb_cq_pop_qe *qe = (void *)qm_port->qe4;
+ int num = qm_port->owed_tokens;
+
+ if (qm_port->use_rsvd_token_scheme) {
+ /* Check if there's a deficit of reserved tokens, and return
+ * early if there are no (unreserved) tokens to consume.
+ */
+ if (num <= qm_port->cq_rsvd_token_deficit) {
+ qm_port->cq_rsvd_token_deficit -= num;
+ qm_port->owed_tokens = 0;
+ return;
+ }
+ num -= qm_port->cq_rsvd_token_deficit;
+ qm_port->cq_rsvd_token_deficit = 0;
+ }
+
+ qe[idx].cmd_byte = DLB_POP_CMD_BYTE;
+ qe[idx].tokens = num - 1;
+ qm_port->owed_tokens = 0;
+}
+
static __rte_always_inline void
dlb_pp_write(struct dlb_enqueue_qe *qe4,
struct process_local_port_data *port_data)
static inline uint16_t
__dlb_event_enqueue_burst(void *event_port,
const struct rte_event events[],
- uint16_t num)
+ uint16_t num,
+ bool use_delayed)
{
struct dlb_eventdev_port *ev_port = event_port;
struct dlb_port *qm_port = &ev_port->qm_port;
for (; j < DLB_NUM_QES_PER_CACHE_LINE && (i + j) < num; j++) {
const struct rte_event *ev = &events[i + j];
+ int16_t thresh = qm_port->token_pop_thresh;
+
+ if (use_delayed &&
+ qm_port->token_pop_mode == DELAYED_POP &&
+ (ev->op == RTE_EVENT_OP_FORWARD ||
+ ev->op == RTE_EVENT_OP_RELEASE) &&
+ qm_port->issued_releases >= thresh - 1) {
+ /* Insert the token pop QE and break out. This
+ * may result in a partial HCW, but that is
+ * simpler than supporting arbitrary QE
+ * insertion.
+ */
+ dlb_construct_token_pop_qe(qm_port, j);
+
+ /* Reset the releases for the next QE batch */
+ qm_port->issued_releases -= thresh;
+
+ /* When using delayed token pop mode, the
+ * initial token threshold is the full CQ
+ * depth. After the first token pop, we need to
+ * reset it to the dequeue_depth.
+ */
+ qm_port->token_pop_thresh =
+ qm_port->dequeue_depth;
+
+ pop_offs = 1;
+ j++;
+ break;
+ }
if (dlb_event_enqueue_prep(ev_port, qm_port, ev,
port_data, &sched_types[j],
const struct rte_event events[],
uint16_t num)
{
- return __dlb_event_enqueue_burst(event_port, events, num);
+ return __dlb_event_enqueue_burst(event_port, events, num, false);
+}
+
+static inline uint16_t
+dlb_event_enqueue_burst_delayed(void *event_port,
+ const struct rte_event events[],
+ uint16_t num)
+{
+ return __dlb_event_enqueue_burst(event_port, events, num, true);
}
static inline uint16_t
dlb_event_enqueue(void *event_port,
const struct rte_event events[])
{
- return __dlb_event_enqueue_burst(event_port, events, 1);
+ return __dlb_event_enqueue_burst(event_port, events, 1, false);
+}
+
+static inline uint16_t
+dlb_event_enqueue_delayed(void *event_port,
+ const struct rte_event events[])
+{
+ return __dlb_event_enqueue_burst(event_port, events, 1, true);
}
static uint16_t
const struct rte_event events[],
uint16_t num)
{
- return __dlb_event_enqueue_burst(event_port, events, num);
+ return __dlb_event_enqueue_burst(event_port, events, num, false);
+}
+
+static uint16_t
+dlb_event_enqueue_new_burst_delayed(void *event_port,
+ const struct rte_event events[],
+ uint16_t num)
+{
+ return __dlb_event_enqueue_burst(event_port, events, num, true);
}
static uint16_t
const struct rte_event events[],
uint16_t num)
{
- return __dlb_event_enqueue_burst(event_port, events, num);
+ return __dlb_event_enqueue_burst(event_port, events, num, false);
+}
+
+static uint16_t
+dlb_event_enqueue_forward_burst_delayed(void *event_port,
+ const struct rte_event events[],
+ uint16_t num)
+{
+ return __dlb_event_enqueue_burst(event_port, events, num, true);
}
static __rte_always_inline int
qm_port->owed_tokens += num;
- dlb_consume_qe_immediate(qm_port, num);
+ if (num && qm_port->token_pop_mode == AUTO_POP)
+ dlb_consume_qe_immediate(qm_port, num);
ev_port->outstanding_releases += num;
qm_port->owed_tokens += num;
- dlb_consume_qe_immediate(qm_port, num);
+ if (num && qm_port->token_pop_mode == AUTO_POP)
+ dlb_consume_qe_immediate(qm_port, num);
ev_port->outstanding_releases += num;
qm_port->qe4[3].cmd_byte = 0;
for (; j < DLB_NUM_QES_PER_CACHE_LINE && (i + j) < n; j++) {
+ int16_t thresh = qm_port->token_pop_thresh;
+
+ if (qm_port->token_pop_mode == DELAYED_POP &&
+ qm_port->issued_releases >= thresh - 1) {
+ /* Insert the token pop QE */
+ dlb_construct_token_pop_qe(qm_port, j);
+
+ /* Reset the releases for the next QE batch */
+ qm_port->issued_releases -= thresh;
+
+ /* When using delayed token pop mode, the
+ * initial token threshold is the full CQ
+ * depth. After the first token pop, we need to
+ * reset it to the dequeue_depth.
+ */
+ qm_port->token_pop_thresh =
+ qm_port->dequeue_depth;
+
+ pop_offs = 1;
+ j++;
+ break;
+ }
qm_port->qe4[j].cmd_byte = DLB_COMP_CMD_BYTE;
qm_port->issued_releases++;
uint64_t wait)
{
struct dlb_eventdev_port *ev_port = event_port;
+ struct dlb_port *qm_port = &ev_port->qm_port;
struct dlb_eventdev *dlb = ev_port->dlb;
uint16_t cnt;
int ret;
DLB_INC_STAT(ev_port->stats.tx_implicit_rel, out_rels);
}
+ if (qm_port->token_pop_mode == DEFERRED_POP &&
+ qm_port->owed_tokens)
+ dlb_consume_qe_immediate(qm_port, qm_port->owed_tokens);
+
cnt = dlb_hw_dequeue(dlb, ev_port, ev, num, wait);
DLB_INC_STAT(ev_port->stats.traffic.total_polls, 1);
uint16_t num, uint64_t wait)
{
struct dlb_eventdev_port *ev_port = event_port;
+ struct dlb_port *qm_port = &ev_port->qm_port;
struct dlb_eventdev *dlb = ev_port->dlb;
uint16_t cnt;
int ret;
DLB_INC_STAT(ev_port->stats.tx_implicit_rel, out_rels);
}
+ if (qm_port->token_pop_mode == DEFERRED_POP &&
+ qm_port->owed_tokens)
+ dlb_consume_qe_immediate(qm_port, qm_port->owed_tokens);
+
cnt = dlb_hw_dequeue_sparse(dlb, ev_port, ev, num, wait);
DLB_INC_STAT(ev_port->stats.traffic.total_polls, 1);
struct dlb_devargs *dlb_args)
{
struct dlb_eventdev *dlb;
- int err;
+ int err, i;
dlb = dev->data->dev_private;
return err;
}
+ /* Initialize each port's token pop mode */
+ for (i = 0; i < DLB_MAX_NUM_PORTS; i++)
+ dlb->ev_ports[i].qm_port.token_pop_mode = AUTO_POP;
+
rte_spinlock_init(&dlb->qm_instance.resource_lock);
dlb_iface_low_level_io_init(dlb);
git.droids-corp.org / dpdk.git / blobdiff