[dpdk-dev] [PATCH v3 15/42] event/octeontx2: add worker enqueue functions

[<pbhagavatula@marvell.com>]

From: Pavan Nikhilesh <pbhagavatula@marvell.com>

Add worker event enqueue functions.

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
 drivers/event/octeontx2/otx2_evdev.h  |   8 ++
 drivers/event/octeontx2/otx2_worker.c | 136 ++++++++++++++++++++++++++
 2 files changed, 144 insertions(+)

diff --git a/drivers/event/octeontx2/otx2_evdev.h b/drivers/event/octeontx2/otx2_evdev.h
index cccce1dea..4f2fd33df 100644
--- a/drivers/event/octeontx2/otx2_evdev.h
+++ b/drivers/event/octeontx2/otx2_evdev.h
@@ -170,6 +170,14 @@ parse_kvargs_value(const char *key, const char *value, void *opaque)
 	return 0;
 }
 
+uint16_t otx2_ssogws_enq(void *port, const struct rte_event *ev);
+uint16_t otx2_ssogws_enq_burst(void *port, const struct rte_event ev[],
+			       uint16_t nb_events);
+uint16_t otx2_ssogws_enq_new_burst(void *port, const struct rte_event ev[],
+				   uint16_t nb_events);
+uint16_t otx2_ssogws_enq_fwd_burst(void *port, const struct rte_event ev[],
+				   uint16_t nb_events);
+
 /* Init and Fini API's */
 int otx2_sso_init(struct rte_eventdev *event_dev);
 int otx2_sso_fini(struct rte_eventdev *event_dev);
diff --git a/drivers/event/octeontx2/otx2_worker.c b/drivers/event/octeontx2/otx2_worker.c
index 83f535d05..044c5f132 100644
--- a/drivers/event/octeontx2/otx2_worker.c
+++ b/drivers/event/octeontx2/otx2_worker.c
@@ -3,3 +3,139 @@
  */
 
 #include "otx2_worker.h"
+
+static __rte_noinline uint8_t
+otx2_ssogws_new_event(struct otx2_ssogws *ws, const struct rte_event *ev)
+{
+	const uint32_t tag = (uint32_t)ev->event;
+	const uint8_t new_tt = ev->sched_type;
+	const uint64_t event_ptr = ev->u64;
+	const uint16_t grp = ev->queue_id;
+
+	if (ws->xaq_lmt <= *ws->fc_mem)
+		return 0;
+
+	otx2_ssogws_add_work(ws, event_ptr, tag, new_tt, grp);
+
+	return 1;
+}
+
+static __rte_always_inline void
+otx2_ssogws_fwd_swtag(struct otx2_ssogws *ws, const struct rte_event *ev)
+{
+	const uint32_t tag = (uint32_t)ev->event;
+	const uint8_t new_tt = ev->sched_type;
+	const uint8_t cur_tt = ws->cur_tt;
+
+	/* 96XX model
+	 * cur_tt/new_tt     SSO_SYNC_ORDERED SSO_SYNC_ATOMIC SSO_SYNC_UNTAGGED
+	 *
+	 * SSO_SYNC_ORDERED        norm           norm             untag
+	 * SSO_SYNC_ATOMIC         norm           norm		   untag
+	 * SSO_SYNC_UNTAGGED       norm           norm             NOOP
+	 */
+
+	if (new_tt == SSO_SYNC_UNTAGGED) {
+		if (cur_tt != SSO_SYNC_UNTAGGED)
+			otx2_ssogws_swtag_untag(ws);
+	} else {
+		otx2_ssogws_swtag_norm(ws, tag, new_tt);
+	}
+
+	ws->swtag_req = 1;
+}
+
+static __rte_always_inline void
+otx2_ssogws_fwd_group(struct otx2_ssogws *ws, const struct rte_event *ev,
+		      const uint16_t grp)
+{
+	const uint32_t tag = (uint32_t)ev->event;
+	const uint8_t new_tt = ev->sched_type;
+
+	otx2_write64(ev->u64, OTX2_SSOW_GET_BASE_ADDR(ws->getwrk_op) +
+		     SSOW_LF_GWS_OP_UPD_WQP_GRP1);
+	rte_smp_wmb();
+	otx2_ssogws_swtag_desched(ws, tag, new_tt, grp);
+}
+
+static __rte_always_inline void
+otx2_ssogws_forward_event(struct otx2_ssogws *ws, const struct rte_event *ev)
+{
+	const uint8_t grp = ev->queue_id;
+
+	/* Group hasn't changed, Use SWTAG to forward the event */
+	if (ws->cur_grp == grp)
+		otx2_ssogws_fwd_swtag(ws, ev);
+	else
+	/*
+	 * Group has been changed for group based work pipelining,
+	 * Use deschedule/add_work operation to transfer the event to
+	 * new group/core
+	 */
+		otx2_ssogws_fwd_group(ws, ev, grp);
+}
+
+static __rte_always_inline void
+otx2_ssogws_release_event(struct otx2_ssogws *ws)
+{
+	otx2_ssogws_swtag_flush(ws);
+}
+
+uint16_t __hot
+otx2_ssogws_enq(void *port, const struct rte_event *ev)
+{
+	struct otx2_ssogws *ws = port;
+
+	switch (ev->op) {
+	case RTE_EVENT_OP_NEW:
+		rte_smp_mb();
+		return otx2_ssogws_new_event(ws, ev);
+	case RTE_EVENT_OP_FORWARD:
+		otx2_ssogws_forward_event(ws, ev);
+		break;
+	case RTE_EVENT_OP_RELEASE:
+		otx2_ssogws_release_event(ws);
+		break;
+	default:
+		return 0;
+	}
+
+	return 1;
+}
+
+uint16_t __hot
+otx2_ssogws_enq_burst(void *port, const struct rte_event ev[],
+		      uint16_t nb_events)
+{
+	RTE_SET_USED(nb_events);
+	return otx2_ssogws_enq(port, ev);
+}
+
+uint16_t __hot
+otx2_ssogws_enq_new_burst(void *port, const struct rte_event ev[],
+			  uint16_t nb_events)
+{
+	struct otx2_ssogws *ws = port;
+	uint16_t i, rc = 1;
+
+	rte_smp_mb();
+	if (ws->xaq_lmt <= *ws->fc_mem)
+		return 0;
+
+	for (i = 0; i < nb_events && rc; i++)
+		rc = otx2_ssogws_new_event(ws,  &ev[i]);
+
+	return nb_events;
+}
+
+uint16_t __hot
+otx2_ssogws_enq_fwd_burst(void *port, const struct rte_event ev[],
+			  uint16_t nb_events)
+{
+	struct otx2_ssogws *ws = port;
+
+	RTE_SET_USED(nb_events);
+	otx2_ssogws_forward_event(ws,  ev);
+
+	return 1;
+}
-- 
2.22.0