[dpdk-dev] [PATCH 18/39] event/octeontx: add support worker enqueue function

[Jerin Jacob <jerin.jacob@caviumnetworks.com>]

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
---
 drivers/event/octeontx/ssovf_evdev.h  |   4 ++
 drivers/event/octeontx/ssovf_worker.c | 116 ++++++++++++++++++++++++++++++++++
 2 files changed, 120 insertions(+)

diff --git a/drivers/event/octeontx/ssovf_evdev.h b/drivers/event/octeontx/ssovf_evdev.h
index 16846b8..fac42f5 100644
--- a/drivers/event/octeontx/ssovf_evdev.h
+++ b/drivers/event/octeontx/ssovf_evdev.h
@@ -187,4 +187,8 @@ ssovf_pmd_priv(const struct rte_eventdev *eventdev)
 	return eventdev->data->dev_private;
 }
 
+uint16_t ssows_enq(void *port, const struct rte_event *ev);
+uint16_t ssows_enq_burst(void *port,
+		const struct rte_event ev[], uint16_t nb_events);
+
 #endif /* __SSOVF_EVDEV_H__ */
diff --git a/drivers/event/octeontx/ssovf_worker.c b/drivers/event/octeontx/ssovf_worker.c
index 8a96076..7ec78b4 100644
--- a/drivers/event/octeontx/ssovf_worker.c
+++ b/drivers/event/octeontx/ssovf_worker.c
@@ -138,3 +138,119 @@ ssows_swtag_wait(struct ssows *ws)
 	;
 }
 
+static force_inline void
+ssows_new_event(struct ssows *ws, const struct rte_event *ev)
+{
+	const uint64_t event_ptr = ev->u64;
+	const uint32_t tag = (uint32_t)ev->event;
+	const uint8_t new_tt = ev->sched_type;
+	const uint8_t grp = ev->queue_id;
+
+	ssows_add_work(ws, event_ptr, tag, new_tt, grp);
+}
+
+static force_inline void
+ssows_fwd_swtag(struct ssows *ws, const struct rte_event *ev, const uint8_t grp)
+{
+	const uint8_t cur_tt = ws->cur_tt;
+	const uint8_t new_tt = ev->sched_type;
+	const uint32_t tag = (uint32_t)ev->event;
+	/*
+	 * 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       full           full             NOOP
+	 */
+	if (unlikely(cur_tt == SSO_SYNC_UNTAGGED)) {
+		if (new_tt != SSO_SYNC_UNTAGGED) {
+			ssows_swtag_full(ws, ev->u64, tag,
+				new_tt, grp);
+		}
+	} else {
+		if (likely(new_tt != SSO_SYNC_UNTAGGED))
+			ssows_swtag_norm(ws, tag, new_tt);
+		else
+			ssows_swtag_untag(ws);
+	}
+	ws->swtag_req = 1;
+}
+
+#define OCT_EVENT_TYPE_GRP_FWD (RTE_EVENT_TYPE_MAX - 1)
+
+static force_inline void
+ssows_fwd_group(struct ssows *ws, const struct rte_event *ev, const uint8_t grp)
+{
+	const uint64_t event_ptr = ev->u64;
+	const uint32_t tag = (uint32_t)ev->event;
+	const uint8_t cur_tt = ws->cur_tt;
+	const uint8_t new_tt = ev->sched_type;
+
+	if (cur_tt == SSO_SYNC_ORDERED) {
+		/* Create unique tag based on custom event type and new grp */
+		uint32_t newtag = OCT_EVENT_TYPE_GRP_FWD << 28;
+
+		newtag |= grp << 20;
+		newtag |= tag;
+		ssows_swtag_norm(ws, newtag, SSO_SYNC_ATOMIC);
+		rte_smp_wmb();
+		ssows_swtag_wait(ws);
+	} else {
+		rte_smp_wmb();
+	}
+	ssows_add_work(ws, event_ptr, tag, new_tt, grp);
+}
+
+static force_inline void
+ssows_forward_event(struct ssows *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)
+		ssows_fwd_swtag(ws, ev, grp);
+	else
+	/*
+	 * Group has been changed for group based work pipelining,
+	 * Use deschedule/add_work operation to transfer the event to
+	 * new group/core
+	 */
+		ssows_fwd_group(ws, ev, grp);
+}
+
+static force_inline void
+ssows_release_event(struct ssows *ws)
+{
+	if (likely(ws->cur_tt != SSO_SYNC_UNTAGGED))
+		ssows_swtag_untag(ws);
+}
+
+force_inline uint16_t __hot
+ssows_enq(void *port, const struct rte_event *ev)
+{
+	struct ssows *ws = port;
+	uint16_t ret = 1;
+
+	switch (ev->op) {
+	case RTE_EVENT_OP_NEW:
+		ssows_new_event(ws, ev);
+		break;
+	case RTE_EVENT_OP_FORWARD:
+		ssows_forward_event(ws, ev);
+		break;
+	case RTE_EVENT_OP_RELEASE:
+		ssows_release_event(ws);
+		break;
+	default:
+		ret = 0;
+	}
+	return ret;
+}
+
+uint16_t __hot
+ssows_enq_burst(void *port, const struct rte_event ev[], uint16_t nb_events)
+{
+	RTE_SET_USED(nb_events);
+	return ssows_enq(port, ev);
+}
+
-- 
2.5.5