event/cnxk: support timer

Add event timer adapter a.k.a TIM initialization on SSO probe.

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

doc/guides/eventdevs/cnxk.rst

@@ -35,6 +35,10 @@ Features of the OCTEON cnxk SSO PMD are:
 - Open system with configurable amount of outstanding events limited only by
   DRAM
 - HW accelerated dequeue timeout support to enable power management
+- HW managed event timers support through TIM, with high precision and
+  time granularity of 2.5us on CN9K and 1us on CN10K.
+- Up to 256 TIM rings a.k.a event timer adapters.
+- Up to 8 rings traversed in parallel.
 
 Prerequisites and Compilation procedure
 ---------------------------------------
@@ -101,3 +105,5 @@ Debugging Options
    +===+============+=======================================================+
    | 1 | SSO        | --log-level='pmd\.event\.cnxk,8'                      |
    +---+------------+-------------------------------------------------------+
+   | 2 | TIM        | --log-level='pmd\.event\.cnxk\.timer,8'               |
+   +---+------------+-------------------------------------------------------+

drivers/event/cnxk/cnxk_eventdev.c

@@ -582,6 +582,8 @@ cnxk_sso_init(struct rte_eventdev *event_dev)
 	dev->nb_event_queues = 0;
 	dev->nb_event_ports = 0;
 
+	cnxk_tim_init(&dev->sso);
+
 	return 0;
 
 error:
@@ -598,6 +600,7 @@ cnxk_sso_fini(struct rte_eventdev *event_dev)
 	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 		return 0;
 
+	cnxk_tim_fini();
 	roc_sso_rsrc_fini(&dev->sso);
 	roc_sso_dev_fini(&dev->sso);
 

drivers/event/cnxk/cnxk_eventdev.h

@@ -14,6 +14,8 @@
 
 #include "roc_api.h"
 
+#include "cnxk_tim_evdev.h"
+
 #define CNXK_SSO_XAE_CNT   "xae_cnt"
 #define CNXK_SSO_GGRP_QOS  "qos"
 #define CN9K_SSO_SINGLE_WS "single_ws"

drivers/event/cnxk/cnxk_tim_evdev.c

@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2021 Marvell.
+ */
+
+#include "cnxk_eventdev.h"
+#include "cnxk_tim_evdev.h"
+
+void
+cnxk_tim_init(struct roc_sso *sso)
+{
+	const struct rte_memzone *mz;
+	struct cnxk_tim_evdev *dev;
+	int rc;
+
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return;
+
+	mz = rte_memzone_reserve(RTE_STR(CNXK_TIM_EVDEV_NAME),
+				 sizeof(struct cnxk_tim_evdev), 0, 0);
+	if (mz == NULL) {
+		plt_tim_dbg("Unable to allocate memory for TIM Event device");
+		return;
+	}
+	dev = mz->addr;
+
+	dev->tim.roc_sso = sso;
+	rc = roc_tim_init(&dev->tim);
+	if (rc < 0) {
+		plt_err("Failed to initialize roc tim resources");
+		rte_memzone_free(mz);
+		return;
+	}
+	dev->nb_rings = rc;
+	dev->chunk_sz = CNXK_TIM_RING_DEF_CHUNK_SZ;
+}
+
+void
+cnxk_tim_fini(void)
+{
+	struct cnxk_tim_evdev *dev = tim_priv_get();
+
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return;
+
+	roc_tim_fini(&dev->tim);
+	rte_memzone_free(rte_memzone_lookup(RTE_STR(CNXK_TIM_EVDEV_NAME)));
+}

drivers/event/cnxk/cnxk_tim_evdev.h

@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2021 Marvell.
+ */
+
+#ifndef __CNXK_TIM_EVDEV_H__
+#define __CNXK_TIM_EVDEV_H__
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <eventdev_pmd_pci.h>
+#include <rte_event_timer_adapter.h>
+#include <rte_memzone.h>
+
+#include "roc_api.h"
+
+#define CNXK_TIM_EVDEV_NAME	   cnxk_tim_eventdev
+#define CNXK_TIM_RING_DEF_CHUNK_SZ (4096)
+
+struct cnxk_tim_evdev {
+	struct roc_tim tim;
+	struct rte_eventdev *event_dev;
+	uint16_t nb_rings;
+	uint32_t chunk_sz;
+};
+
+static inline struct cnxk_tim_evdev *
+tim_priv_get(void)
+{
+	const struct rte_memzone *mz;
+
+	mz = rte_memzone_lookup(RTE_STR(CNXK_TIM_EVDEV_NAME));
+	if (mz == NULL)
+		return NULL;
+
+	return mz->addr;
+}
+
+void cnxk_tim_init(struct roc_sso *sso);
+void cnxk_tim_fini(void);
+
+#endif /* __CNXK_TIM_EVDEV_H__ */

drivers/event/cnxk/meson.build

@@ -16,6 +16,7 @@ sources = files(
         'cnxk_eventdev.c',
         'cnxk_eventdev_selftest.c',
         'cnxk_eventdev_stats.c',
+        'cnxk_tim_evdev.c',
 )
 
 deps += ['bus_pci', 'common_cnxk']