drivers/event/dpaa2/dpaa2_eventdev.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright 2017 NXP.
   5  *
   6  *   Redistribution and use in source and binary forms, with or without
   7  *   modification, are permitted provided that the following conditions
   8  *   are met:
   9  *
  10  *     * Redistributions of source code must retain the above copyright
  11  *       notice, this list of conditions and the following disclaimer.
  12  *     * Redistributions in binary form must reproduce the above copyright
  13  *       notice, this list of conditions and the following disclaimer in
  14  *       the documentation and/or other materials provided with the
  15  *       distribution.
  16  *     * Neither the name of NXP nor the names of its
  17  *       contributors may be used to endorse or promote products derived
  18  *       from this software without specific prior written permission.
  19  *
  20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <assert.h>
  34 #include <stdio.h>
  35 #include <stdbool.h>
  36 #include <errno.h>
  37 #include <stdint.h>
  38 #include <string.h>
  39 #include <stdint.h>
  40 #include <sys/epoll.h>
  41
  42 #include <rte_atomic.h>
  43 #include <rte_byteorder.h>
  44 #include <rte_common.h>
  45 #include <rte_debug.h>
  46 #include <rte_dev.h>
  47 #include <rte_eal.h>
  48 #include <rte_fslmc.h>
  49 #include <rte_lcore.h>
  50 #include <rte_log.h>
  51 #include <rte_malloc.h>
  52 #include <rte_memory.h>
  53 #include <rte_memzone.h>
  54 #include <rte_pci.h>
  55 #include <rte_vdev.h>
  56
  57 #include <fslmc_vfio.h>
  58 #include <dpaa2_hw_pvt.h>
  59 #include <dpaa2_hw_mempool.h>
  60 #include <dpaa2_hw_dpio.h>
  61 #include "dpaa2_eventdev.h"
  62 #include <portal/dpaa2_hw_pvt.h>
  63 #include <mc/fsl_dpci.h>
  64
  65 /* Clarifications
  66  * Evendev = SoC Instance
  67  * Eventport = DPIO Instance
  68  * Eventqueue = DPCON Instance
  69  * 1 Eventdev can have N Eventqueue
  70  * Soft Event Flow is DPCI Instance
  71  */
  72
  73 static uint16_t
  74 dpaa2_eventdev_enqueue_burst(void *port, const struct rte_event ev[],
  75                              uint16_t nb_events)
  76 {
  77         RTE_SET_USED(port);
  78         RTE_SET_USED(ev);
  79         RTE_SET_USED(nb_events);
  80
  81         return 0;
  82 }
  83
  84 static uint16_t
  85 dpaa2_eventdev_enqueue(void *port, const struct rte_event *ev)
  86 {
  87         return dpaa2_eventdev_enqueue_burst(port, ev, 1);
  88 }
  89
  90 static uint16_t
  91 dpaa2_eventdev_dequeue_burst(void *port, struct rte_event ev[],
  92                              uint16_t nb_events, uint64_t timeout_ticks)
  93 {
  94         RTE_SET_USED(port);
  95         RTE_SET_USED(ev);
  96         RTE_SET_USED(nb_events);
  97         RTE_SET_USED(timeout_ticks);
  98
  99         return 0;
 100 }
 101
 102 static uint16_t
 103 dpaa2_eventdev_dequeue(void *port, struct rte_event *ev,
 104                        uint64_t timeout_ticks)
 105 {
 106         return dpaa2_eventdev_dequeue_burst(port, ev, 1, timeout_ticks);
 107 }
 108
 109 static const struct rte_eventdev_ops dpaa2_eventdev_ops;
 110
 111 static int
 112 dpaa2_eventdev_setup_dpci(struct dpaa2_dpci_dev *dpci_dev,
 113                           struct dpaa2_dpcon_dev *dpcon_dev)
 114 {
 115         struct dpci_rx_queue_cfg rx_queue_cfg;
 116         int ret, i;
 117
 118         /*Do settings to get the frame on a DPCON object*/
 119         rx_queue_cfg.options = DPCI_QUEUE_OPT_DEST;
 120         rx_queue_cfg.dest_cfg.dest_type = DPCI_DEST_DPCON;
 121         rx_queue_cfg.dest_cfg.dest_id = dpcon_dev->dpcon_id;
 122         rx_queue_cfg.dest_cfg.priority = DPAA2_EVENT_DEFAULT_DPCI_PRIO;
 123
 124         for (i = 0 ; i < DPAA2_EVENT_DPCI_MAX_QUEUES; i++) {
 125                 rx_queue_cfg.user_ctx = (uint64_t)(&dpci_dev->queue[i]);
 126                 ret = dpci_set_rx_queue(&dpci_dev->dpci,
 127                                         CMD_PRI_LOW,
 128                                         dpci_dev->token, i,
 129                                         &rx_queue_cfg);
 130                 if (ret) {
 131                         PMD_DRV_LOG(ERR, PMD,
 132                                     "set_rx_q failed with err code: %d", ret);
 133                         return ret;
 134                 }
 135         }
 136         return 0;
 137 }
 138
 139 static int
 140 dpaa2_eventdev_create(const char *name)
 141 {
 142         struct rte_eventdev *eventdev;
 143         struct dpaa2_eventdev *priv;
 144         struct dpaa2_dpcon_dev *dpcon_dev = NULL;
 145         struct dpaa2_dpci_dev *dpci_dev = NULL;
 146         int ret;
 147
 148         eventdev = rte_event_pmd_vdev_init(name,
 149                                            sizeof(struct dpaa2_eventdev),
 150                                            rte_socket_id());
 151         if (eventdev == NULL) {
 152                 PMD_DRV_ERR("Failed to create eventdev vdev %s", name);
 153                 goto fail;
 154         }
 155
 156         eventdev->dev_ops       = &dpaa2_eventdev_ops;
 157         eventdev->schedule      = NULL;
 158         eventdev->enqueue       = dpaa2_eventdev_enqueue;
 159         eventdev->enqueue_burst = dpaa2_eventdev_enqueue_burst;
 160         eventdev->dequeue       = dpaa2_eventdev_dequeue;
 161         eventdev->dequeue_burst = dpaa2_eventdev_dequeue_burst;
 162
 163         /* For secondary processes, the primary has done all the work */
 164         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 165                 return 0;
 166
 167         priv = eventdev->data->dev_private;
 168         priv->max_event_queues = 0;
 169
 170         do {
 171                 dpcon_dev = rte_dpaa2_alloc_dpcon_dev();
 172                 if (!dpcon_dev)
 173                         break;
 174                 priv->evq_info[priv->max_event_queues].dpcon = dpcon_dev;
 175
 176                 dpci_dev = rte_dpaa2_alloc_dpci_dev();
 177                 if (!dpci_dev) {
 178                         rte_dpaa2_free_dpcon_dev(dpcon_dev);
 179                         break;
 180                 }
 181                 priv->evq_info[priv->max_event_queues].dpci = dpci_dev;
 182
 183                 ret = dpaa2_eventdev_setup_dpci(dpci_dev, dpcon_dev);
 184                 if (ret) {
 185                         PMD_DRV_LOG(ERR, PMD,
 186                                     "dpci setup failed with err code: %d", ret);
 187                         return ret;
 188                 }
 189                 priv->max_event_queues++;
 190         } while (dpcon_dev && dpci_dev);
 191
 192         return 0;
 193 fail:
 194         return -EFAULT;
 195 }
 196
 197 static int
 198 dpaa2_eventdev_probe(struct rte_vdev_device *vdev)
 199 {
 200         const char *name;
 201
 202         name = rte_vdev_device_name(vdev);
 203         PMD_DRV_LOG(INFO, PMD, "Initializing %s\n", name);
 204         return dpaa2_eventdev_create(name);
 205 }
 206
 207 static int
 208 dpaa2_eventdev_remove(struct rte_vdev_device *vdev)
 209 {
 210         const char *name;
 211
 212         name = rte_vdev_device_name(vdev);
 213         PMD_DRV_LOG(INFO, "Closing %s", name);
 214
 215         return rte_event_pmd_vdev_uninit(name);
 216 }
 217
 218 static struct rte_vdev_driver vdev_eventdev_dpaa2_pmd = {
 219         .probe = dpaa2_eventdev_probe,
 220         .remove = dpaa2_eventdev_remove
 221 };
 222
 223 RTE_PMD_REGISTER_VDEV(EVENTDEV_NAME_DPAA2_PMD, vdev_eventdev_dpaa2_pmd);