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 struct ssovf_mbox_grp_pri {
  93         uint8_t wgt_left; /* Read only */
  94         uint8_t weight;
  95         uint8_t affinity;
  96         uint8_t priority;
  97 };
  98
  99 static int
 100 ssovf_mbox_priority_set(uint8_t queue, uint8_t prio)
 101 {
 102         struct octeontx_mbox_hdr hdr = {0};
 103         struct ssovf_mbox_grp_pri grp;
 104         uint16_t len = sizeof(struct ssovf_mbox_grp_pri);
 105         int ret;
 106
 107         hdr.coproc = SSO_COPROC;
 108         hdr.msg = SSO_GRP_SET_PRIORITY;
 109         hdr.vfid = queue;
 110
 111         grp.weight = 0xff;
 112         grp.affinity = 0xff;
 113         grp.priority = prio / 32; /* Normalize to 0 to 7 */
 114
 115         ret = octeontx_ssovf_mbox_send(&hdr, &grp, len, NULL, 0);
 116         if (ret)
 117                 ssovf_log_err("Failed to set grp=%d prio=%d", queue, prio);
 118
 119         return ret;
 120 }
 121
 122 static void
 123 ssovf_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *dev_info)
 124 {
 125         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
 126
 127         dev_info->min_dequeue_timeout_ns = edev->min_deq_timeout_ns;
 128         dev_info->max_dequeue_timeout_ns = edev->max_deq_timeout_ns;
 129         dev_info->max_event_queues = edev->max_event_queues;
 130         dev_info->max_event_queue_flows = (1ULL << 20);
 131         dev_info->max_event_queue_priority_levels = 8;
 132         dev_info->max_event_priority_levels = 1;
 133         dev_info->max_event_ports = edev->max_event_ports;
 134         dev_info->max_event_port_dequeue_depth = 1;
 135         dev_info->max_event_port_enqueue_depth = 1;
 136         dev_info->max_num_events =  edev->max_num_events;
 137         dev_info->event_dev_cap = RTE_EVENT_DEV_CAP_QUEUE_QOS |
 138                                         RTE_EVENT_DEV_CAP_DISTRIBUTED_SCHED |
 139                                         RTE_EVENT_DEV_CAP_QUEUE_ALL_TYPES;
 140 }
 141
 142 static int
 143 ssovf_configure(const struct rte_eventdev *dev)
 144 {
 145         struct rte_event_dev_config *conf = &dev->data->dev_conf;
 146         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
 147         uint64_t deq_tmo_ns;
 148
 149         ssovf_func_trace();
 150         deq_tmo_ns = conf->dequeue_timeout_ns;
 151
 152         if (conf->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT) {
 153                 edev->is_timeout_deq = 1;
 154                 deq_tmo_ns = edev->min_deq_timeout_ns;
 155         }
 156         edev->nb_event_queues = conf->nb_event_queues;
 157         edev->nb_event_ports = conf->nb_event_ports;
 158
 159         return ssovf_mbox_getwork_tmo_set(deq_tmo_ns);
 160 }
 161
 162 static void
 163 ssovf_queue_def_conf(struct rte_eventdev *dev, uint8_t queue_id,
 164                                  struct rte_event_queue_conf *queue_conf)
 165 {
 166         RTE_SET_USED(dev);
 167         RTE_SET_USED(queue_id);
 168
 169         queue_conf->nb_atomic_flows = (1ULL << 20);
 170         queue_conf->nb_atomic_order_sequences = (1ULL << 20);
 171         queue_conf->event_queue_cfg = RTE_EVENT_QUEUE_CFG_ALL_TYPES;
 172         queue_conf->priority = RTE_EVENT_DEV_PRIORITY_NORMAL;
 173 }
 174
 175 static void
 176 ssovf_queue_release(struct rte_eventdev *dev, uint8_t queue_id)
 177 {
 178         RTE_SET_USED(dev);
 179         RTE_SET_USED(queue_id);
 180 }
 181
 182 static int
 183 ssovf_queue_setup(struct rte_eventdev *dev, uint8_t queue_id,
 184                               const struct rte_event_queue_conf *queue_conf)
 185 {
 186         RTE_SET_USED(dev);
 187         ssovf_func_trace("queue=%d prio=%d", queue_id, queue_conf->priority);
 188
 189         return ssovf_mbox_priority_set(queue_id, queue_conf->priority);
 190 }
 191
 192 /* Initialize and register event driver with DPDK Application */
 193 static const struct rte_eventdev_ops ssovf_ops = {
 194         .dev_infos_get    = ssovf_info_get,
 195         .dev_configure    = ssovf_configure,
 196         .queue_def_conf   = ssovf_queue_def_conf,
 197         .queue_setup      = ssovf_queue_setup,
 198         .queue_release    = ssovf_queue_release,
 199 };
 200
 201 static int
 202 ssovf_vdev_probe(const char *name, const char *params)
 203 {
 204         struct octeontx_ssovf_info oinfo;
 205         struct ssovf_mbox_dev_info info;
 206         struct ssovf_evdev *edev;
 207         struct rte_eventdev *eventdev;
 208         static int ssovf_init_once;
 209         int ret;
 210
 211         RTE_SET_USED(params);
 212
 213         /* More than one instance is not supported */
 214         if (ssovf_init_once) {
 215                 ssovf_log_err("Request to create >1 %s instance", name);
 216                 return -EINVAL;
 217         }
 218
 219         eventdev = rte_event_pmd_vdev_init(name, sizeof(struct ssovf_evdev),
 220                                 rte_socket_id());
 221         if (eventdev == NULL) {
 222                 ssovf_log_err("Failed to create eventdev vdev %s", name);
 223                 return -ENOMEM;
 224         }
 225         eventdev->dev_ops = &ssovf_ops;
 226
 227         /* For secondary processes, the primary has done all the work */
 228         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 229                 return 0;
 230
 231         ret = octeontx_ssovf_info(&oinfo);
 232         if (ret) {
 233                 ssovf_log_err("Failed to probe and validate ssovfs %d", ret);
 234                 goto error;
 235         }
 236
 237         edev = ssovf_pmd_priv(eventdev);
 238         edev->max_event_ports = oinfo.total_ssowvfs;
 239         edev->max_event_queues = oinfo.total_ssovfs;
 240         edev->is_timeout_deq = 0;
 241
 242         ret = ssovf_mbox_dev_info(&info);
 243         if (ret < 0 || ret != sizeof(struct ssovf_mbox_dev_info)) {
 244                 ssovf_log_err("Failed to get mbox devinfo %d", ret);
 245                 goto error;
 246         }
 247
 248         edev->min_deq_timeout_ns = info.min_deq_timeout_ns;
 249         edev->max_deq_timeout_ns = info.max_deq_timeout_ns;
 250         edev->max_num_events =  info.max_num_events;
 251         ssovf_log_dbg("min_deq_tmo=%"PRId64" max_deq_tmo=%"PRId64" max_evts=%d",
 252                         info.min_deq_timeout_ns, info.max_deq_timeout_ns,
 253                         info.max_num_events);
 254
 255         if (!edev->max_event_ports || !edev->max_event_queues) {
 256                 ssovf_log_err("Not enough eventdev resource queues=%d ports=%d",
 257                         edev->max_event_queues, edev->max_event_ports);
 258                 ret = -ENODEV;
 259                 goto error;
 260         }
 261
 262         ssovf_log_info("Initializing %s domain=%d max_queues=%d max_ports=%d",
 263                         name, oinfo.domain, edev->max_event_queues,
 264                         edev->max_event_ports);
 265
 266         ssovf_init_once = 1;
 267         return 0;
 268
 269 error:
 270         rte_event_pmd_vdev_uninit(name);
 271         return ret;
 272 }
 273
 274 static int
 275 ssovf_vdev_remove(const char *name)
 276 {
 277         ssovf_log_info("Closing %s", name);
 278         return rte_event_pmd_vdev_uninit(name);
 279 }
 280
 281 static struct rte_vdev_driver vdev_ssovf_pmd = {
 282         .probe = ssovf_vdev_probe,
 283         .remove = ssovf_vdev_remove
 284 };
 285
 286 RTE_PMD_REGISTER_VDEV(EVENTDEV_NAME_OCTEONTX_PMD, vdev_ssovf_pmd);