drivers/event/octeontx/ssovf_evdev.c

   1 /*
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (C) Cavium networks Ltd. 2017.
   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 Cavium networks 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 <rte_common.h>
  34 #include <rte_debug.h>
  35 #include <rte_dev.h>
  36 #include <rte_eal.h>
  37 #include <rte_lcore.h>
  38 #include <rte_log.h>
  39 #include <rte_malloc.h>
  40 #include <rte_memory.h>
  41 #include <rte_memzone.h>
  42 #include <rte_vdev.h>
  43
  44 #include "ssovf_evdev.h"
  45
  46 /* SSOPF Mailbox messages */
  47
  48 struct ssovf_mbox_dev_info {
  49         uint64_t min_deq_timeout_ns;
  50         uint64_t max_deq_timeout_ns;
  51         uint32_t max_num_events;
  52 };
  53
  54 static int
  55 ssovf_mbox_dev_info(struct ssovf_mbox_dev_info *info)
  56 {
  57         struct octeontx_mbox_hdr hdr = {0};
  58         uint16_t len = sizeof(struct ssovf_mbox_dev_info);
  59
  60         hdr.coproc = SSO_COPROC;
  61         hdr.msg = SSO_GET_DEV_INFO;
  62         hdr.vfid = 0;
  63
  64         memset(info, 0, len);
  65         return octeontx_ssovf_mbox_send(&hdr, NULL, 0, info, len);
  66 }
  67
  68 struct ssovf_mbox_getwork_wait {
  69         uint64_t wait_ns;
  70 };
  71
  72 static int
  73 ssovf_mbox_getwork_tmo_set(uint32_t timeout_ns)
  74 {
  75         struct octeontx_mbox_hdr hdr = {0};
  76         struct ssovf_mbox_getwork_wait tmo_set;
  77         uint16_t len = sizeof(struct ssovf_mbox_getwork_wait);
  78         int ret;
  79
  80         hdr.coproc = SSO_COPROC;
  81         hdr.msg = SSO_SET_GETWORK_WAIT;
  82         hdr.vfid = 0;
  83
  84         tmo_set.wait_ns = timeout_ns;
  85         ret = octeontx_ssovf_mbox_send(&hdr, &tmo_set, len, NULL, 0);
  86         if (ret)
  87                 ssovf_log_err("Failed to set getwork timeout(%d)", ret);
  88
  89         return ret;
  90 }
  91
  92 static void
  93 ssovf_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *dev_info)
  94 {
  95         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
  96
  97         dev_info->min_dequeue_timeout_ns = edev->min_deq_timeout_ns;
  98         dev_info->max_dequeue_timeout_ns = edev->max_deq_timeout_ns;
  99         dev_info->max_event_queues = edev->max_event_queues;
 100         dev_info->max_event_queue_flows = (1ULL << 20);
 101         dev_info->max_event_queue_priority_levels = 8;
 102         dev_info->max_event_priority_levels = 1;
 103         dev_info->max_event_ports = edev->max_event_ports;
 104         dev_info->max_event_port_dequeue_depth = 1;
 105         dev_info->max_event_port_enqueue_depth = 1;
 106         dev_info->max_num_events =  edev->max_num_events;
 107         dev_info->event_dev_cap = RTE_EVENT_DEV_CAP_QUEUE_QOS |
 108                                         RTE_EVENT_DEV_CAP_DISTRIBUTED_SCHED |
 109                                         RTE_EVENT_DEV_CAP_QUEUE_ALL_TYPES;
 110 }
 111
 112 static int
 113 ssovf_configure(const struct rte_eventdev *dev)
 114 {
 115         struct rte_event_dev_config *conf = &dev->data->dev_conf;
 116         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
 117         uint64_t deq_tmo_ns;
 118
 119         ssovf_func_trace();
 120         deq_tmo_ns = conf->dequeue_timeout_ns;
 121
 122         if (conf->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT) {
 123                 edev->is_timeout_deq = 1;
 124                 deq_tmo_ns = edev->min_deq_timeout_ns;
 125         }
 126         edev->nb_event_queues = conf->nb_event_queues;
 127         edev->nb_event_ports = conf->nb_event_ports;
 128
 129         return ssovf_mbox_getwork_tmo_set(deq_tmo_ns);
 130 }
 131
 132 /* Initialize and register event driver with DPDK Application */
 133 static const struct rte_eventdev_ops ssovf_ops = {
 134         .dev_infos_get    = ssovf_info_get,
 135         .dev_configure    = ssovf_configure,
 136 };
 137
 138 static int
 139 ssovf_vdev_probe(const char *name, const char *params)
 140 {
 141         struct octeontx_ssovf_info oinfo;
 142         struct ssovf_mbox_dev_info info;
 143         struct ssovf_evdev *edev;
 144         struct rte_eventdev *eventdev;
 145         static int ssovf_init_once;
 146         int ret;
 147
 148         RTE_SET_USED(params);
 149
 150         /* More than one instance is not supported */
 151         if (ssovf_init_once) {
 152                 ssovf_log_err("Request to create >1 %s instance", name);
 153                 return -EINVAL;
 154         }
 155
 156         eventdev = rte_event_pmd_vdev_init(name, sizeof(struct ssovf_evdev),
 157                                 rte_socket_id());
 158         if (eventdev == NULL) {
 159                 ssovf_log_err("Failed to create eventdev vdev %s", name);
 160                 return -ENOMEM;
 161         }
 162         eventdev->dev_ops = &ssovf_ops;
 163
 164         /* For secondary processes, the primary has done all the work */
 165         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 166                 return 0;
 167
 168         ret = octeontx_ssovf_info(&oinfo);
 169         if (ret) {
 170                 ssovf_log_err("Failed to probe and validate ssovfs %d", ret);
 171                 goto error;
 172         }
 173
 174         edev = ssovf_pmd_priv(eventdev);
 175         edev->max_event_ports = oinfo.total_ssowvfs;
 176         edev->max_event_queues = oinfo.total_ssovfs;
 177         edev->is_timeout_deq = 0;
 178
 179         ret = ssovf_mbox_dev_info(&info);
 180         if (ret < 0 || ret != sizeof(struct ssovf_mbox_dev_info)) {
 181                 ssovf_log_err("Failed to get mbox devinfo %d", ret);
 182                 goto error;
 183         }
 184
 185         edev->min_deq_timeout_ns = info.min_deq_timeout_ns;
 186         edev->max_deq_timeout_ns = info.max_deq_timeout_ns;
 187         edev->max_num_events =  info.max_num_events;
 188         ssovf_log_dbg("min_deq_tmo=%"PRId64" max_deq_tmo=%"PRId64" max_evts=%d",
 189                         info.min_deq_timeout_ns, info.max_deq_timeout_ns,
 190                         info.max_num_events);
 191
 192         if (!edev->max_event_ports || !edev->max_event_queues) {
 193                 ssovf_log_err("Not enough eventdev resource queues=%d ports=%d",
 194                         edev->max_event_queues, edev->max_event_ports);
 195                 ret = -ENODEV;
 196                 goto error;
 197         }
 198
 199         ssovf_log_info("Initializing %s domain=%d max_queues=%d max_ports=%d",
 200                         name, oinfo.domain, edev->max_event_queues,
 201                         edev->max_event_ports);
 202
 203         ssovf_init_once = 1;
 204         return 0;
 205
 206 error:
 207         rte_event_pmd_vdev_uninit(name);
 208         return ret;
 209 }
 210
 211 static int
 212 ssovf_vdev_remove(const char *name)
 213 {
 214         ssovf_log_info("Closing %s", name);
 215         return rte_event_pmd_vdev_uninit(name);
 216 }
 217
 218 static struct rte_vdev_driver vdev_ssovf_pmd = {
 219         .probe = ssovf_vdev_probe,
 220         .remove = ssovf_vdev_remove
 221 };
 222
 223 RTE_PMD_REGISTER_VDEV(EVENTDEV_NAME_OCTEONTX_PMD, vdev_ssovf_pmd);