drivers/event/dpaa/dpaa_eventdev.c

   1 /*   SPDX-License-Identifier:        BSD-3-Clause
   2  *   Copyright 2017 NXP
   3  */
   4
   5 #include <assert.h>
   6 #include <stdio.h>
   7 #include <stdbool.h>
   8 #include <errno.h>
   9 #include <stdint.h>
  10 #include <string.h>
  11 #include <sys/epoll.h>
  12
  13 #include <rte_atomic.h>
  14 #include <rte_byteorder.h>
  15 #include <rte_common.h>
  16 #include <rte_debug.h>
  17 #include <rte_dev.h>
  18 #include <rte_eal.h>
  19 #include <rte_lcore.h>
  20 #include <rte_log.h>
  21 #include <rte_malloc.h>
  22 #include <rte_memcpy.h>
  23 #include <rte_memory.h>
  24 #include <rte_memzone.h>
  25 #include <rte_pci.h>
  26 #include <rte_eventdev.h>
  27 #include <rte_eventdev_pmd_vdev.h>
  28 #include <rte_ethdev.h>
  29 #include <rte_event_eth_rx_adapter.h>
  30 #include <rte_dpaa_bus.h>
  31 #include <rte_dpaa_logs.h>
  32 #include <rte_cycles_64.h>
  33
  34 #include <dpaa_ethdev.h>
  35 #include "dpaa_eventdev.h"
  36 #include <dpaa_mempool.h>
  37
  38 /*
  39  * Clarifications
  40  * Evendev = Virtual Instance for SoC
  41  * Eventport = Portal Instance
  42  * Eventqueue = Channel Instance
  43  * 1 Eventdev can have N Eventqueue
  44  */
  45
  46 static int
  47 dpaa_event_dequeue_timeout_ticks(struct rte_eventdev *dev, uint64_t ns,
  48                                  uint64_t *timeout_ticks)
  49 {
  50         uint64_t cycles_per_second;
  51
  52         EVENTDEV_DRV_FUNC_TRACE();
  53
  54         RTE_SET_USED(dev);
  55
  56         cycles_per_second = rte_get_timer_hz();
  57         *timeout_ticks = ns * (cycles_per_second / NS_PER_S);
  58
  59         return 0;
  60 }
  61
  62 static void
  63 dpaa_event_dev_info_get(struct rte_eventdev *dev,
  64                         struct rte_event_dev_info *dev_info)
  65 {
  66         EVENTDEV_DRV_FUNC_TRACE();
  67
  68         RTE_SET_USED(dev);
  69         dev_info->driver_name = "event_dpaa";
  70         dev_info->min_dequeue_timeout_ns =
  71                 DPAA_EVENT_MIN_DEQUEUE_TIMEOUT;
  72         dev_info->max_dequeue_timeout_ns =
  73                 DPAA_EVENT_MAX_DEQUEUE_TIMEOUT;
  74         dev_info->dequeue_timeout_ns =
  75                 DPAA_EVENT_MIN_DEQUEUE_TIMEOUT;
  76         dev_info->max_event_queues =
  77                 DPAA_EVENT_MAX_QUEUES;
  78         dev_info->max_event_queue_flows =
  79                 DPAA_EVENT_MAX_QUEUE_FLOWS;
  80         dev_info->max_event_queue_priority_levels =
  81                 DPAA_EVENT_MAX_QUEUE_PRIORITY_LEVELS;
  82         dev_info->max_event_priority_levels =
  83                 DPAA_EVENT_MAX_EVENT_PRIORITY_LEVELS;
  84         dev_info->max_event_ports =
  85                 DPAA_EVENT_MAX_EVENT_PORT;
  86         dev_info->max_event_port_dequeue_depth =
  87                 DPAA_EVENT_MAX_PORT_DEQUEUE_DEPTH;
  88         dev_info->max_event_port_enqueue_depth =
  89                 DPAA_EVENT_MAX_PORT_ENQUEUE_DEPTH;
  90         /*
  91          * TODO: Need to find out that how to fetch this info
  92          * from kernel or somewhere else.
  93          */
  94         dev_info->max_num_events =
  95                 DPAA_EVENT_MAX_NUM_EVENTS;
  96         dev_info->event_dev_cap =
  97                 RTE_EVENT_DEV_CAP_DISTRIBUTED_SCHED |
  98                 RTE_EVENT_DEV_CAP_BURST_MODE |
  99                 RTE_EVENT_DEV_CAP_MULTIPLE_QUEUE_PORT |
 100                 RTE_EVENT_DEV_CAP_NONSEQ_MODE;
 101 }
 102
 103 static int
 104 dpaa_event_dev_configure(const struct rte_eventdev *dev)
 105 {
 106         struct dpaa_eventdev *priv = dev->data->dev_private;
 107         struct rte_event_dev_config *conf = &dev->data->dev_conf;
 108         int ret, i;
 109         uint32_t *ch_id;
 110
 111         EVENTDEV_DRV_FUNC_TRACE();
 112
 113         priv->dequeue_timeout_ns = conf->dequeue_timeout_ns;
 114         priv->nb_events_limit = conf->nb_events_limit;
 115         priv->nb_event_queues = conf->nb_event_queues;
 116         priv->nb_event_ports = conf->nb_event_ports;
 117         priv->nb_event_queue_flows = conf->nb_event_queue_flows;
 118         priv->nb_event_port_dequeue_depth = conf->nb_event_port_dequeue_depth;
 119         priv->nb_event_port_enqueue_depth = conf->nb_event_port_enqueue_depth;
 120         priv->event_dev_cfg = conf->event_dev_cfg;
 121
 122         /* Check dequeue timeout method is per dequeue or global */
 123         if (priv->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT) {
 124                 /*
 125                  * Use timeout value as given in dequeue operation.
 126                  * So invalidating this timetout value.
 127                  */
 128                 priv->dequeue_timeout_ns = 0;
 129         }
 130
 131         ch_id = rte_malloc("dpaa-channels",
 132                           sizeof(uint32_t) * priv->nb_event_queues,
 133                           RTE_CACHE_LINE_SIZE);
 134         if (ch_id == NULL) {
 135                 EVENTDEV_DRV_ERR("Fail to allocate memory for dpaa channels\n");
 136                 return -ENOMEM;
 137         }
 138         /* Create requested event queues within the given event device */
 139         ret = qman_alloc_pool_range(ch_id, priv->nb_event_queues, 1, 0);
 140         if (ret < 0) {
 141                 EVENTDEV_DRV_ERR("Failed to create internal channel\n");
 142                 rte_free(ch_id);
 143                 return ret;
 144         }
 145         for (i = 0; i < priv->nb_event_queues; i++)
 146                 priv->evq_info[i].ch_id = (u16)ch_id[i];
 147
 148         /* Lets prepare event ports */
 149         memset(&priv->ports[0], 0,
 150               sizeof(struct dpaa_port) * priv->nb_event_ports);
 151         if (priv->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT) {
 152                 for (i = 0; i < priv->nb_event_ports; i++) {
 153                         priv->ports[i].timeout =
 154                                 DPAA_EVENT_PORT_DEQUEUE_TIMEOUT_INVALID;
 155                 }
 156         } else if (priv->dequeue_timeout_ns == 0) {
 157                 for (i = 0; i < priv->nb_event_ports; i++) {
 158                         dpaa_event_dequeue_timeout_ticks(NULL,
 159                                 DPAA_EVENT_PORT_DEQUEUE_TIMEOUT_NS,
 160                                 &priv->ports[i].timeout);
 161                 }
 162         } else {
 163                 for (i = 0; i < priv->nb_event_ports; i++) {
 164                         dpaa_event_dequeue_timeout_ticks(NULL,
 165                                 priv->dequeue_timeout_ns,
 166                                 &priv->ports[i].timeout);
 167                 }
 168         }
 169         /*
 170          * TODO: Currently portals are affined with threads. Maximum threads
 171          * can be created equals to number of lcore.
 172          */
 173         rte_free(ch_id);
 174         EVENTDEV_DRV_LOG("Configured eventdev devid=%d", dev->data->dev_id);
 175
 176         return 0;
 177 }
 178
 179 static int
 180 dpaa_event_dev_start(struct rte_eventdev *dev)
 181 {
 182         EVENTDEV_DRV_FUNC_TRACE();
 183         RTE_SET_USED(dev);
 184
 185         return 0;
 186 }
 187
 188 static void
 189 dpaa_event_dev_stop(struct rte_eventdev *dev)
 190 {
 191         EVENTDEV_DRV_FUNC_TRACE();
 192         RTE_SET_USED(dev);
 193 }
 194
 195 static int
 196 dpaa_event_dev_close(struct rte_eventdev *dev)
 197 {
 198         EVENTDEV_DRV_FUNC_TRACE();
 199         RTE_SET_USED(dev);
 200
 201         return 0;
 202 }
 203
 204 static void
 205 dpaa_event_queue_def_conf(struct rte_eventdev *dev, uint8_t queue_id,
 206                           struct rte_event_queue_conf *queue_conf)
 207 {
 208         EVENTDEV_DRV_FUNC_TRACE();
 209
 210         RTE_SET_USED(dev);
 211         RTE_SET_USED(queue_id);
 212
 213         memset(queue_conf, 0, sizeof(struct rte_event_queue_conf));
 214         queue_conf->schedule_type = RTE_SCHED_TYPE_PARALLEL;
 215         queue_conf->priority = RTE_EVENT_DEV_PRIORITY_HIGHEST;
 216 }
 217
 218 static int
 219 dpaa_event_queue_setup(struct rte_eventdev *dev, uint8_t queue_id,
 220                        const struct rte_event_queue_conf *queue_conf)
 221 {
 222         struct dpaa_eventdev *priv = dev->data->dev_private;
 223         struct dpaa_eventq *evq_info = &priv->evq_info[queue_id];
 224
 225         EVENTDEV_DRV_FUNC_TRACE();
 226
 227         switch (queue_conf->schedule_type) {
 228         case RTE_SCHED_TYPE_PARALLEL:
 229         case RTE_SCHED_TYPE_ATOMIC:
 230                 break;
 231         case RTE_SCHED_TYPE_ORDERED:
 232                 EVENTDEV_DRV_ERR("Schedule type is not supported.");
 233                 return -1;
 234         }
 235         evq_info->event_queue_cfg = queue_conf->event_queue_cfg;
 236         evq_info->event_queue_id = queue_id;
 237
 238         return 0;
 239 }
 240
 241 static void
 242 dpaa_event_queue_release(struct rte_eventdev *dev, uint8_t queue_id)
 243 {
 244         EVENTDEV_DRV_FUNC_TRACE();
 245
 246         RTE_SET_USED(dev);
 247         RTE_SET_USED(queue_id);
 248 }
 249
 250 static const struct rte_eventdev_ops dpaa_eventdev_ops = {
 251         .dev_infos_get    = dpaa_event_dev_info_get,
 252         .dev_configure    = dpaa_event_dev_configure,
 253         .dev_start        = dpaa_event_dev_start,
 254         .dev_stop         = dpaa_event_dev_stop,
 255         .dev_close        = dpaa_event_dev_close,
 256         .queue_def_conf   = dpaa_event_queue_def_conf,
 257         .queue_setup      = dpaa_event_queue_setup,
 258         .queue_release    = dpaa_event_queue_release,
 259         .timeout_ticks    = dpaa_event_dequeue_timeout_ticks,
 260 };
 261
 262 static int
 263 dpaa_event_dev_create(const char *name)
 264 {
 265         struct rte_eventdev *eventdev;
 266         struct dpaa_eventdev *priv;
 267
 268         eventdev = rte_event_pmd_vdev_init(name,
 269                                            sizeof(struct dpaa_eventdev),
 270                                            rte_socket_id());
 271         if (eventdev == NULL) {
 272                 EVENTDEV_DRV_ERR("Failed to create eventdev vdev %s", name);
 273                 goto fail;
 274         }
 275
 276         eventdev->dev_ops       = &dpaa_eventdev_ops;
 277
 278         /* For secondary processes, the primary has done all the work */
 279         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 280                 return 0;
 281
 282         priv = eventdev->data->dev_private;
 283         priv->max_event_queues = DPAA_EVENT_MAX_QUEUES;
 284
 285         return 0;
 286 fail:
 287         return -EFAULT;
 288 }
 289
 290 static int
 291 dpaa_event_dev_probe(struct rte_vdev_device *vdev)
 292 {
 293         const char *name;
 294
 295         name = rte_vdev_device_name(vdev);
 296         EVENTDEV_DRV_LOG("Initializing %s", name);
 297
 298         return dpaa_event_dev_create(name);
 299 }
 300
 301 static int
 302 dpaa_event_dev_remove(struct rte_vdev_device *vdev)
 303 {
 304         const char *name;
 305
 306         name = rte_vdev_device_name(vdev);
 307         EVENTDEV_DRV_LOG("Closing %s", name);
 308
 309         return rte_event_pmd_vdev_uninit(name);
 310 }
 311
 312 static struct rte_vdev_driver vdev_eventdev_dpaa_pmd = {
 313         .probe = dpaa_event_dev_probe,
 314         .remove = dpaa_event_dev_remove
 315 };
 316
 317 RTE_PMD_REGISTER_VDEV(EVENTDEV_NAME_DPAA_PMD, vdev_eventdev_dpaa_pmd);