From: Pavan Nikhilesh <pbhagavatula@marvell.com>
Date: Tue, 4 May 2021 00:27:22 +0000 (+0530)
Subject: event/cnxk: add timer cancel
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=20dc782a3219f24c208a95e8cde26cbb6d84a7a7;p=dpdk.git

event/cnxk: add timer cancel

Add function to cancel event timer that has been armed.

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Signed-off-by: Shijith Thotton <sthotton@marvell.com>
---

diff --git a/drivers/event/cnxk/cnxk_tim_evdev.c b/drivers/event/cnxk/cnxk_tim_evdev.c
index 68c3b30499..62a15a4a1c 100644
--- a/drivers/event/cnxk/cnxk_tim_evdev.c
+++ b/drivers/event/cnxk/cnxk_tim_evdev.c
@@ -96,6 +96,7 @@ cnxk_tim_set_fp_ops(struct cnxk_tim_ring *tim_ring)
 
 	cnxk_tim_ops.arm_burst = arm_burst[tim_ring->ena_dfb][prod_flag];
 	cnxk_tim_ops.arm_tmo_tick_burst = arm_tmo_burst[tim_ring->ena_dfb];
+	cnxk_tim_ops.cancel_burst = cnxk_tim_timer_cancel_burst;
 }
 
 static void
diff --git a/drivers/event/cnxk/cnxk_tim_evdev.h b/drivers/event/cnxk/cnxk_tim_evdev.h
index b66aac17c6..001f448d5a 100644
--- a/drivers/event/cnxk/cnxk_tim_evdev.h
+++ b/drivers/event/cnxk/cnxk_tim_evdev.h
@@ -236,6 +236,11 @@ TIM_ARM_FASTPATH_MODES
 TIM_ARM_TMO_FASTPATH_MODES
 #undef FP
 
+uint16_t
+cnxk_tim_timer_cancel_burst(const struct rte_event_timer_adapter *adptr,
+			    struct rte_event_timer **tim,
+			    const uint16_t nb_timers);
+
 int cnxk_tim_caps_get(const struct rte_eventdev *dev, uint64_t flags,
 		      uint32_t *caps,
 		      const struct rte_event_timer_adapter_ops **ops);
diff --git a/drivers/event/cnxk/cnxk_tim_worker.c b/drivers/event/cnxk/cnxk_tim_worker.c
index 717c53fb73..98ff143c30 100644
--- a/drivers/event/cnxk/cnxk_tim_worker.c
+++ b/drivers/event/cnxk/cnxk_tim_worker.c
@@ -152,3 +152,33 @@ cnxk_tim_timer_arm_tmo_brst(const struct rte_event_timer_adapter *adptr,
 	}
 TIM_ARM_TMO_FASTPATH_MODES
 #undef FP
+
+uint16_t
+cnxk_tim_timer_cancel_burst(const struct rte_event_timer_adapter *adptr,
+			    struct rte_event_timer **tim,
+			    const uint16_t nb_timers)
+{
+	uint16_t index;
+	int ret;
+
+	RTE_SET_USED(adptr);
+	rte_atomic_thread_fence(__ATOMIC_ACQUIRE);
+	for (index = 0; index < nb_timers; index++) {
+		if (tim[index]->state == RTE_EVENT_TIMER_CANCELED) {
+			rte_errno = EALREADY;
+			break;
+		}
+
+		if (tim[index]->state != RTE_EVENT_TIMER_ARMED) {
+			rte_errno = EINVAL;
+			break;
+		}
+		ret = cnxk_tim_rm_entry(tim[index]);
+		if (ret) {
+			rte_errno = -ret;
+			break;
+		}
+	}
+
+	return index;
+}
diff --git a/drivers/event/cnxk/cnxk_tim_worker.h b/drivers/event/cnxk/cnxk_tim_worker.h
index 56cb4cdd93..7caeb1a8fb 100644
--- a/drivers/event/cnxk/cnxk_tim_worker.h
+++ b/drivers/event/cnxk/cnxk_tim_worker.h
@@ -561,4 +561,41 @@ __retry:
 	return nb_timers;
 }
 
+static int
+cnxk_tim_rm_entry(struct rte_event_timer *tim)
+{
+	struct cnxk_tim_ent *entry;
+	struct cnxk_tim_bkt *bkt;
+	uint64_t lock_sema;
+
+	if (tim->impl_opaque[1] == 0 || tim->impl_opaque[0] == 0)
+		return -ENOENT;
+
+	entry = (struct cnxk_tim_ent *)(uintptr_t)tim->impl_opaque[0];
+	if (entry->wqe != tim->ev.u64) {
+		tim->impl_opaque[0] = 0;
+		tim->impl_opaque[1] = 0;
+		return -ENOENT;
+	}
+
+	bkt = (struct cnxk_tim_bkt *)(uintptr_t)tim->impl_opaque[1];
+	lock_sema = cnxk_tim_bkt_inc_lock(bkt);
+	if (cnxk_tim_bkt_get_hbt(lock_sema) ||
+	    !cnxk_tim_bkt_get_nent(lock_sema)) {
+		tim->impl_opaque[0] = 0;
+		tim->impl_opaque[1] = 0;
+		cnxk_tim_bkt_dec_lock(bkt);
+		return -ENOENT;
+	}
+
+	entry->w0 = 0;
+	entry->wqe = 0;
+	tim->state = RTE_EVENT_TIMER_CANCELED;
+	tim->impl_opaque[0] = 0;
+	tim->impl_opaque[1] = 0;
+	cnxk_tim_bkt_dec_lock(bkt);
+
+	return 0;
+}
+
 #endif /* __CNXK_TIM_WORKER_H__ */