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path: root/drivers/event/opdl/opdl_evdev.c
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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2017 Intel Corporation
 */

#include <inttypes.h>
#include <string.h>

#include <rte_bus_vdev.h>
#include <rte_lcore.h>
#include <rte_memzone.h>
#include <rte_kvargs.h>
#include <rte_errno.h>
#include <rte_cycles.h>

#include "opdl_evdev.h"
#include "opdl_ring.h"
#include "opdl_log.h"

#define EVENTDEV_NAME_OPDL_PMD event_opdl
#define NUMA_NODE_ARG "numa_node"
#define DO_VALIDATION_ARG "do_validation"
#define DO_TEST_ARG "self_test"


static void
opdl_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *info);

uint16_t
opdl_event_enqueue_burst(void *port,
			 const struct rte_event ev[],
			 uint16_t num)
{
	struct opdl_port *p = port;

	if (unlikely(!p->opdl->data->dev_started))
		return 0;


	/* either rx_enqueue or disclaim*/
	return p->enq(p, ev, num);
}

uint16_t
opdl_event_enqueue(void *port, const struct rte_event *ev)
{
	struct opdl_port *p = port;

	if (unlikely(!p->opdl->data->dev_started))
		return 0;


	return p->enq(p, ev, 1);
}

uint16_t
opdl_event_dequeue_burst(void *port,
			 struct rte_event *ev,
			 uint16_t num,
			 uint64_t wait)
{
	struct opdl_port *p = (void *)port;

	RTE_SET_USED(wait);

	if (unlikely(!p->opdl->data->dev_started))
		return 0;

	/* This function pointer can point to tx_dequeue or claim*/
	return p->deq(p, ev, num);
}

uint16_t
opdl_event_dequeue(void *port,
		   struct rte_event *ev,
		   uint64_t wait)
{
	struct opdl_port *p = (void *)port;

	if (unlikely(!p->opdl->data->dev_started))
		return 0;

	RTE_SET_USED(wait);

	return p->deq(p, ev, 1);
}

static int
opdl_port_link(struct rte_eventdev *dev,
	       void *port,
	       const uint8_t queues[],
	       const uint8_t priorities[],
	       uint16_t num)
{
	struct opdl_port *p = port;

	RTE_SET_USED(priorities);
	RTE_SET_USED(dev);

	if (unlikely(dev->data->dev_started)) {
		PMD_DRV_LOG(ERR, "DEV_ID:[%02d] : "
			     "Attempt to link queue (%u) to port %d while device started\n",
			     dev->data->dev_id,
				queues[0],
				p->id);
		rte_errno = -EINVAL;
		return 0;
	}

	/* Max of 1 queue per port */
	if (num > 1) {
		PMD_DRV_LOG(ERR, "DEV_ID:[%02d] : "
			     "Attempt to link more than one queue (%u) to port %d requested\n",
			     dev->data->dev_id,
				num,
				p->id);
		rte_errno = -EDQUOT;
		return 0;
	}

	if (!p->configured) {
		PMD_DRV_LOG(ERR, "DEV_ID:[%02d] : "
			     "port %d not configured, cannot link to %u\n",
			     dev->data->dev_id,
				p->id,
				queues[0]);
		rte_errno = -EINVAL;
		return 0;
	}

	if (p->external_qid != OPDL_INVALID_QID) {
		PMD_DRV_LOG(ERR, "DEV_ID:[%02d] : "
			     "port %d already linked to queue %u, cannot link to %u\n",
			     dev->data->dev_id,
				p->id,
				p->external_qid,
				queues[0]);
		rte_errno = -EINVAL;
		return 0;
	}

	p->external_qid = queues[0];

	return 1;
}

static int
opdl_port_unlink(struct rte_eventdev *dev,
		 void *port,
		 uint8_t queues[],
		 uint16_t nb_unlinks)
{
	struct opdl_port *p = port;

	RTE_SET_USED(queues);
	RTE_SET_USED(nb_unlinks);

	if (unlikely(dev->data->dev_started)) {
		PMD_DRV_LOG(ERR, "DEV_ID:[%02d] : "
			     "Attempt to unlink queue (%u) to port %d while device started\n",
			     dev->data->dev_id,
			     queues[0],
			     p->id);
		rte_errno = -EINVAL;
		return 0;
	}
	RTE_SET_USED(nb_unlinks);

	/* Port Stuff */
	p->queue_id = OPDL_INVALID_QID;
	p->p_type = OPDL_INVALID_PORT;
	p->external_qid = OPDL_INVALID_QID;

	/* always unlink 0 queue due to statice pipeline */
	return 0;
}

static int
opdl_port_setup(struct rte_eventdev *dev,
		uint8_t port_id,
		const struct rte_event_port_conf *conf)
{
	struct opdl_evdev *device = opdl_pmd_priv(dev);
	struct opdl_port *p = &device->ports[port_id];

	RTE_SET_USED(conf);

	/* Check if port already configured */
	if (p->configured) {
		PMD_DRV_LOG(ERR, "DEV_ID:[%02d] : "
			     "Attempt to setup port %d which is already setup\n",
			     dev->data->dev_id,
			     p->id);
		return -EDQUOT;
	}

	*p = (struct opdl_port){0}; /* zero entire structure */
	p->id = port_id;
	p->opdl = device;
	p->queue_id = OPDL_INVALID_QID;
	p->external_qid = OPDL_INVALID_QID;
	dev->data->ports[port_id] = p;
	rte_smp_wmb();
	p->configured = 1;
	device->nb_ports++;
	return 0;
}

static void
opdl_port_release(void *port)
{
	struct opdl_port *p = (void *)port;

	if (p == NULL ||
	    p->opdl->data->dev_started) {
		return;
	}

	p->configured = 0;
	p->initialized = 0;
}

static void
opdl_port_def_conf(struct rte_eventdev *dev, uint8_t port_id,
		struct rte_event_port_conf *port_conf)
{
	RTE_SET_USED(dev);
	RTE_SET_USED(port_id);

	port_conf->new_event_threshold = MAX_OPDL_CONS_Q_DEPTH;
	port_conf->dequeue_depth = MAX_OPDL_CONS_Q_DEPTH;
	port_conf->enqueue_depth = MAX_OPDL_CONS_Q_DEPTH;
}

static int
opdl_queue_setup(struct rte_eventdev *dev,
		 uint8_t queue_id,
		 const struct rte_event_queue_conf *conf)
{
	enum queue_type type;

	struct opdl_evdev *device = opdl_pmd_priv(dev);

	/* Extra sanity check, probably not needed */
	if (queue_id == OPDL_INVALID_QID) {
		PMD_DRV_LOG(ERR, "DEV_ID:[%02d] : "
			     "Invalid queue id %u requested\n",
			     dev->data->dev_id,
			     queue_id);
		return -EINVAL;
	}

	if (device->nb_q_md > device->max_queue_nb) {
		PMD_DRV_LOG(ERR, "DEV_ID:[%02d] : "
			     "Max number of queues %u exceeded by request %u\n",
			     dev->data->dev_id,
			     device->max_queue_nb,
			     device->nb_q_md);
		return -EINVAL;
	}

	if (RTE_EVENT_QUEUE_CFG_ALL_TYPES
	    & conf->event_queue_cfg) {
		PMD_DRV_LOG(ERR, "DEV_ID:[%02d] : "
			     "QUEUE_CFG_ALL_TYPES not supported\n",
			     dev->data->dev_id);
		return -ENOTSUP;
	} else if (RTE_EVENT_QUEUE_CFG_SINGLE_LINK
		   & conf->event_queue_cfg) {
		type = OPDL_Q_TYPE_SINGLE_LINK;
	} else {
		switch (conf->schedule_type) {
		case RTE_SCHED_TYPE_ORDERED:
			type = OPDL_Q_TYPE_ORDERED;
			break;
		case RTE_SCHED_TYPE_ATOMIC:
			type = OPDL_Q_TYPE_ATOMIC;
			break;
		case RTE_SCHED_TYPE_PARALLEL:
			type = OPDL_Q_TYPE_ORDERED;
			break;
		default:
			PMD_DRV_LOG(ERR, "DEV_ID:[%02d] : "
				     "Unknown queue type %d requested\n",
				     dev->data->dev_id,
				     conf->event_queue_cfg);
			return -EINVAL;
		}
	}
	/* Check if queue id has been setup already */
	uint32_t i;
	for (i = 0; i < device->nb_q_md; i++) {
		if (device->q_md[i].ext_id == queue_id) {
			PMD_DRV_LOG(ERR, "DEV_ID:[%02d] : "
				     "queue id %u already setup\n",
				     dev->data->dev_id,
				     queue_id);
			return -EINVAL;
		}
	}

	device->q_md[device->nb_q_md].ext_id = queue_id;
	device->q_md[device->nb_q_md].type = type;
	device->q_md[device->nb_q_md].setup = 1;
	device->nb_q_md++;

	return 1;
}

static void
opdl_queue_release(struct rte_eventdev *dev, uint8_t queue_id)
{
	struct opdl_evdev *device = opdl_pmd_priv(dev);

	RTE_SET_USED(queue_id);

	if (device->data->dev_started)
		return;

}

static void
opdl_queue_def_conf(struct rte_eventdev *dev,
		    uint8_t queue_id,
		    struct rte_event_queue_conf *conf)
{
	RTE_SET_USED(dev);
	RTE_SET_USED(queue_id);

	static const struct rte_event_queue_conf default_conf = {
		.nb_atomic_flows = 1024,
		.nb_atomic_order_sequences = 1,
		.event_queue_cfg = 0,
		.schedule_type = RTE_SCHED_TYPE_ORDERED,
		.priority = RTE_EVENT_DEV_PRIORITY_NORMAL,
	};

	*conf = default_conf;
}


static int
opdl_dev_configure(const struct rte_eventdev *dev)
{
	struct opdl_evdev *opdl = opdl_pmd_priv(dev);
	const struct rte_eventdev_data *data = dev->data;
	const struct rte_event_dev_config *conf = &data->dev_conf;

	opdl->max_queue_nb = conf->nb_event_queues;
	opdl->max_port_nb = conf->nb_event_ports;
	opdl->nb_events_limit = conf->nb_events_limit;

	if (conf->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT) {
		PMD_DRV_LOG(ERR, "DEV_ID:[%02d] : "
			     "DEQUEUE_TIMEOUT not supported\n",
			     dev->data->dev_id);
		return -ENOTSUP;
	}

	return 0;
}

static void
opdl_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *info)
{
	RTE_SET_USED(dev);

	static const struct rte_event_dev_info evdev_opdl_info = {
		.driver_name = OPDL_PMD_NAME,
		.max_event_queues = RTE_EVENT_MAX_QUEUES_PER_DEV,
		.max_event_queue_flows = OPDL_QID_NUM_FIDS,
		.max_event_queue_priority_levels = OPDL_Q_PRIORITY_MAX,
		.max_event_priority_levels = OPDL_IQS_MAX,
		.max_event_ports = OPDL_PORTS_MAX,
		.max_event_port_dequeue_depth = MAX_OPDL_CONS_Q_DEPTH,
		.max_event_port_enqueue_depth = MAX_OPDL_CONS_Q_DEPTH,
		.max_num_events = OPDL_INFLIGHT_EVENTS_TOTAL,
		.event_dev_cap = RTE_EVENT_DEV_CAP_BURST_MODE,
	};

	*info = evdev_opdl_info;
}

static void
opdl_dump(struct rte_eventdev *dev, FILE *f)
{
	struct opdl_evdev *device = opdl_pmd_priv(dev);

	if (!device->do_validation)
		return;

	fprintf(f,
		"\n\n -- RING STATISTICS --\n");
	uint32_t i;
	for (i = 0; i < device->nb_opdls; i++)
		opdl_ring_dump(device->opdl[i], f);

	fprintf(f,
		"\n\n -- PORT STATISTICS --\n"
		"Type Port Index  Port Id  Queue Id     Av. Req Size  "
		"Av. Grant Size     Av. Cycles PP"
		"      Empty DEQs   Non Empty DEQs   Pkts Processed\n");

	for (i = 0; i < device->max_port_nb; i++) {
		char queue_id[64];
		char total_cyc[64];
		const char *p_type;

		uint64_t cne, cpg;
		struct opdl_port *port = &device->ports[i];

		if (port->initialized) {
			cne = port->port_stat[claim_non_empty];
			cpg = port->port_stat[claim_pkts_granted];
			if (port->p_type == OPDL_REGULAR_PORT)
				p_type = "REG";
			else if (port->p_type == OPDL_PURE_RX_PORT)
				p_type = "  RX";
			else if (port->p_type == OPDL_PURE_TX_PORT)
				p_type = "  TX";
			else if (port->p_type == OPDL_ASYNC_PORT)
				p_type = "SYNC";
			else
				p_type = "????";

			sprintf(queue_id, "%02u", port->external_qid);
			if (port->p_type == OPDL_REGULAR_PORT ||
					port->p_type == OPDL_ASYNC_PORT)
				sprintf(total_cyc,
					" %'16"PRIu64"",
					(cpg != 0 ?
					 port->port_stat[total_cycles] / cpg
					 : 0));
			else
				sprintf(total_cyc,
					"             ----");
			fprintf(f,
				"%4s %10u %8u %9s %'16"PRIu64" %'16"PRIu64" %s "
				"%'16"PRIu64" %'16"PRIu64" %'16"PRIu64"\n",
				p_type,
				i,
				port->id,
				(port->external_qid == OPDL_INVALID_QID ? "---"
				 : queue_id),
				(cne != 0 ?
				 port->port_stat[claim_pkts_requested] / cne
				 : 0),
				(cne != 0 ?
				 port->port_stat[claim_pkts_granted] / cne
				 : 0),
				total_cyc,
				port->port_stat[claim_empty],
				port->port_stat[claim_non_empty],
				port->port_stat[claim_pkts_granted]);
		}
	}
	fprintf(f, "\n");
}


static void
opdl_stop(struct rte_eventdev *dev)
{
	struct opdl_evdev *device = opdl_pmd_priv(dev);

	opdl_xstats_uninit(dev);

	destroy_queues_and_rings(dev);


	device->started = 0;

	rte_smp_wmb();
}

static int
opdl_start(struct rte_eventdev *dev)
{
	int err = 0;

	if (!err)
		err = create_queues_and_rings(dev);


	if (!err)
		err = assign_internal_queue_ids(dev);


	if (!err)
		err = initialise_queue_zero_ports(dev);


	if (!err)
		err = initialise_all_other_ports(dev);


	if (!err)
		err = check_queues_linked(dev);


	if (!err)
		err = opdl_add_event_handlers(dev);


	if (!err)
		err = build_all_dependencies(dev);

	if (!err) {
		opdl_xstats_init(dev);

		struct opdl_evdev *device = opdl_pmd_priv(dev);

		PMD_DRV_LOG(INFO, "DEV_ID:[%02d] : "
			      "SUCCESS : Created %u total queues (%u ex, %u in),"
			      " %u opdls, %u event_dev ports, %u input ports",
			      opdl_pmd_dev_id(device),
			      device->nb_queues,
			      (device->nb_queues - device->nb_opdls),
			      device->nb_opdls,
			      device->nb_opdls,
			      device->nb_ports,
			      device->queue[0].nb_ports);
	} else
		opdl_stop(dev);

	return err;
}

static int
opdl_close(struct rte_eventdev *dev)
{
	struct opdl_evdev *device = opdl_pmd_priv(dev);
	uint32_t i;

	for (i = 0; i < device->max_port_nb; i++) {
		memset(&device->ports[i],
		       0,
		       sizeof(struct opdl_port));
	}

	memset(&device->s_md,
			0x0,
			sizeof(struct opdl_stage_meta_data)*OPDL_PORTS_MAX);

	memset(&device->q_md,
			0xFF,
			sizeof(struct opdl_queue_meta_data)*OPDL_MAX_QUEUES);


	memset(device->q_map_ex_to_in,
			0,
			sizeof(uint8_t)*OPDL_INVALID_QID);

	opdl_xstats_uninit(dev);

	device->max_port_nb = 0;

	device->max_queue_nb = 0;

	device->nb_opdls = 0;

	device->nb_queues   = 0;

	device->nb_ports    = 0;

	device->nb_q_md     = 0;

	dev->data->nb_queues = 0;

	dev->data->nb_ports = 0;


	return 0;
}

static int
assign_numa_node(const char *key __rte_unused, const char *value, void *opaque)
{
	int *socket_id = opaque;
	*socket_id = atoi(value);
	if (*socket_id >= RTE_MAX_NUMA_NODES)
		return -1;
	return 0;
}

static int
set_do_validation(const char *key __rte_unused, const char *value, void *opaque)
{
	int *do_val = opaque;
	*do_val = atoi(value);
	if (*do_val != 0)
		*do_val = 1;

	return 0;
}
static int
set_do_test(const char *key __rte_unused, const char *value, void *opaque)
{
	int *do_test = opaque;

	*do_test = atoi(value);

	if (*do_test != 0)
		*do_test = 1;
	return 0;
}

static int
opdl_probe(struct rte_vdev_device *vdev)
{
	static struct rte_eventdev_ops evdev_opdl_ops = {
		.dev_configure = opdl_dev_configure,
		.dev_infos_get = opdl_info_get,
		.dev_close = opdl_close,
		.dev_start = opdl_start,
		.dev_stop = opdl_stop,
		.dump = opdl_dump,

		.queue_def_conf = opdl_queue_def_conf,
		.queue_setup = opdl_queue_setup,
		.queue_release = opdl_queue_release,
		.port_def_conf = opdl_port_def_conf,
		.port_setup = opdl_port_setup,
		.port_release = opdl_port_release,
		.port_link = opdl_port_link,
		.port_unlink = opdl_port_unlink,


		.xstats_get = opdl_xstats_get,
		.xstats_get_names = opdl_xstats_get_names,
		.xstats_get_by_name = opdl_xstats_get_by_name,
		.xstats_reset = opdl_xstats_reset,
	};

	static const char *const args[] = {
		NUMA_NODE_ARG,
		DO_VALIDATION_ARG,
		DO_TEST_ARG,
		NULL
	};
	const char *name;
	const char *params;
	struct rte_eventdev *dev;
	struct opdl_evdev *opdl;
	int socket_id = rte_socket_id();
	int do_validation = 0;
	int do_test = 0;
	int str_len;
	int test_result = 0;

	name = rte_vdev_device_name(vdev);
	params = rte_vdev_device_args(vdev);
	if (params != NULL && params[0] != '\0') {
		struct rte_kvargs *kvlist = rte_kvargs_parse(params, args);

		if (!kvlist) {
			PMD_DRV_LOG(INFO,
					"Ignoring unsupported parameters when creating device '%s'\n",
					name);
		} else {
			int ret = rte_kvargs_process(kvlist, NUMA_NODE_ARG,
					assign_numa_node, &socket_id);
			if (ret != 0) {
				PMD_DRV_LOG(ERR,
						"%s: Error parsing numa node parameter",
						name);

				rte_kvargs_free(kvlist);
				return ret;
			}

			ret = rte_kvargs_process(kvlist, DO_VALIDATION_ARG,
					set_do_validation, &do_validation);
			if (ret != 0) {
				PMD_DRV_LOG(ERR,
					"%s: Error parsing do validation parameter",
					name);
				rte_kvargs_free(kvlist);
				return ret;
			}

			ret = rte_kvargs_process(kvlist, DO_TEST_ARG,
					set_do_test, &do_test);
			if (ret != 0) {
				PMD_DRV_LOG(ERR,
					"%s: Error parsing do test parameter",
					name);
				rte_kvargs_free(kvlist);
				return ret;
			}

			rte_kvargs_free(kvlist);
		}
	}
	dev = rte_event_pmd_vdev_init(name,
			sizeof(struct opdl_evdev), socket_id);

	if (dev == NULL) {
		PMD_DRV_LOG(ERR, "eventdev vdev init() failed");
		return -EFAULT;
	}

	PMD_DRV_LOG(INFO, "DEV_ID:[%02d] : "
		      "Success - creating eventdev device %s, numa_node:[%d], do_valdation:[%s]"
			  " , self_test:[%s]\n",
		      dev->data->dev_id,
		      name,
		      socket_id,
		      (do_validation ? "true" : "false"),
			  (do_test ? "true" : "false"));

	dev->dev_ops = &evdev_opdl_ops;

	dev->enqueue = opdl_event_enqueue;
	dev->enqueue_burst = opdl_event_enqueue_burst;
	dev->enqueue_new_burst = opdl_event_enqueue_burst;
	dev->enqueue_forward_burst = opdl_event_enqueue_burst;
	dev->dequeue = opdl_event_dequeue;
	dev->dequeue_burst = opdl_event_dequeue_burst;

	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
		return 0;

	opdl = dev->data->dev_private;
	opdl->data = dev->data;
	opdl->socket = socket_id;
	opdl->do_validation = do_validation;
	opdl->do_test = do_test;
	str_len = strlen(name);
	memcpy(opdl->service_name, name, str_len);

	if (do_test == 1)
		test_result =  opdl_selftest();

	return test_result;
}

static int
opdl_remove(struct rte_vdev_device *vdev)
{
	const char *name;

	name = rte_vdev_device_name(vdev);
	if (name == NULL)
		return -EINVAL;

	PMD_DRV_LOG(INFO, "Closing eventdev opdl device %s\n", name);

	return rte_event_pmd_vdev_uninit(name);
}

static struct rte_vdev_driver evdev_opdl_pmd_drv = {
	.probe = opdl_probe,
	.remove = opdl_remove
};

RTE_INIT(opdl_init_log)
{
	opdl_logtype_driver = rte_log_register("pmd.event.opdl.driver");
	if (opdl_logtype_driver >= 0)
		rte_log_set_level(opdl_logtype_driver, RTE_LOG_INFO);
}


RTE_PMD_REGISTER_VDEV(EVENTDEV_NAME_OPDL_PMD, evdev_opdl_pmd_drv);
RTE_PMD_REGISTER_PARAM_STRING(event_opdl, NUMA_NODE_ARG "=<int>"
			      DO_VALIDATION_ARG "=<int>" DO_TEST_ARG "=<int>");