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 static void
  69 ssovf_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *dev_info)
  70 {
  71         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
  72
  73         dev_info->min_dequeue_timeout_ns = edev->min_deq_timeout_ns;
  74         dev_info->max_dequeue_timeout_ns = edev->max_deq_timeout_ns;
  75         dev_info->max_event_queues = edev->max_event_queues;
  76         dev_info->max_event_queue_flows = (1ULL << 20);
  77         dev_info->max_event_queue_priority_levels = 8;
  78         dev_info->max_event_priority_levels = 1;
  79         dev_info->max_event_ports = edev->max_event_ports;
  80         dev_info->max_event_port_dequeue_depth = 1;
  81         dev_info->max_event_port_enqueue_depth = 1;
  82         dev_info->max_num_events =  edev->max_num_events;
  83         dev_info->event_dev_cap = RTE_EVENT_DEV_CAP_QUEUE_QOS |
  84                                         RTE_EVENT_DEV_CAP_DISTRIBUTED_SCHED |
  85                                         RTE_EVENT_DEV_CAP_QUEUE_ALL_TYPES;
  86 }
  87
  88
  89 /* Initialize and register event driver with DPDK Application */
  90 static const struct rte_eventdev_ops ssovf_ops = {
  91         .dev_infos_get    = ssovf_info_get,
  92 };
  93
  94 static int
  95 ssovf_vdev_probe(const char *name, const char *params)
  96 {
  97         struct octeontx_ssovf_info oinfo;
  98         struct ssovf_mbox_dev_info info;
  99         struct ssovf_evdev *edev;
 100         struct rte_eventdev *eventdev;
 101         static int ssovf_init_once;
 102         int ret;
 103
 104         RTE_SET_USED(params);
 105
 106         /* More than one instance is not supported */
 107         if (ssovf_init_once) {
 108                 ssovf_log_err("Request to create >1 %s instance", name);
 109                 return -EINVAL;
 110         }
 111
 112         eventdev = rte_event_pmd_vdev_init(name, sizeof(struct ssovf_evdev),
 113                                 rte_socket_id());
 114         if (eventdev == NULL) {
 115                 ssovf_log_err("Failed to create eventdev vdev %s", name);
 116                 return -ENOMEM;
 117         }
 118         eventdev->dev_ops = &ssovf_ops;
 119
 120         /* For secondary processes, the primary has done all the work */
 121         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 122                 return 0;
 123
 124         ret = octeontx_ssovf_info(&oinfo);
 125         if (ret) {
 126                 ssovf_log_err("Failed to probe and validate ssovfs %d", ret);
 127                 goto error;
 128         }
 129
 130         edev = ssovf_pmd_priv(eventdev);
 131         edev->max_event_ports = oinfo.total_ssowvfs;
 132         edev->max_event_queues = oinfo.total_ssovfs;
 133         edev->is_timeout_deq = 0;
 134
 135         ret = ssovf_mbox_dev_info(&info);
 136         if (ret < 0 || ret != sizeof(struct ssovf_mbox_dev_info)) {
 137                 ssovf_log_err("Failed to get mbox devinfo %d", ret);
 138                 goto error;
 139         }
 140
 141         edev->min_deq_timeout_ns = info.min_deq_timeout_ns;
 142         edev->max_deq_timeout_ns = info.max_deq_timeout_ns;
 143         edev->max_num_events =  info.max_num_events;
 144         ssovf_log_dbg("min_deq_tmo=%"PRId64" max_deq_tmo=%"PRId64" max_evts=%d",
 145                         info.min_deq_timeout_ns, info.max_deq_timeout_ns,
 146                         info.max_num_events);
 147
 148         if (!edev->max_event_ports || !edev->max_event_queues) {
 149                 ssovf_log_err("Not enough eventdev resource queues=%d ports=%d",
 150                         edev->max_event_queues, edev->max_event_ports);
 151                 ret = -ENODEV;
 152                 goto error;
 153         }
 154
 155         ssovf_log_info("Initializing %s domain=%d max_queues=%d max_ports=%d",
 156                         name, oinfo.domain, edev->max_event_queues,
 157                         edev->max_event_ports);
 158
 159         ssovf_init_once = 1;
 160         return 0;
 161
 162 error:
 163         rte_event_pmd_vdev_uninit(name);
 164         return ret;
 165 }
 166
 167 static int
 168 ssovf_vdev_remove(const char *name)
 169 {
 170         ssovf_log_info("Closing %s", name);
 171         return rte_event_pmd_vdev_uninit(name);
 172 }
 173
 174 static struct rte_vdev_driver vdev_ssovf_pmd = {
 175         .probe = ssovf_vdev_probe,
 176         .remove = ssovf_vdev_remove
 177 };
 178
 179 RTE_PMD_REGISTER_VDEV(EVENTDEV_NAME_OCTEONTX_PMD, vdev_ssovf_pmd);