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 struct ssovf_mbox_convert_ns_getworks_iter {
 123         uint64_t wait_ns;
 124         uint32_t getwork_iter;/* Get_work iterations for the given wait_ns */
 125 };
 126
 127 static int
 128 ssovf_mbox_timeout_ticks(uint64_t ns, uint64_t *tmo_ticks)
 129 {
 130         struct octeontx_mbox_hdr hdr = {0};
 131         struct ssovf_mbox_convert_ns_getworks_iter ns2iter;
 132         uint16_t len = sizeof(ns2iter);
 133         int ret;
 134
 135         hdr.coproc = SSO_COPROC;
 136         hdr.msg = SSO_CONVERT_NS_GETWORK_ITER;
 137         hdr.vfid = 0;
 138
 139         memset(&ns2iter, 0, len);
 140         ns2iter.wait_ns = ns;
 141         ret = octeontx_ssovf_mbox_send(&hdr, &ns2iter, len, &ns2iter, len);
 142         if (ret < 0 || (ret != len)) {
 143                 ssovf_log_err("Failed to get tmo ticks ns=%"PRId64"", ns);
 144                 return -EIO;
 145         }
 146
 147         *tmo_ticks = ns2iter.getwork_iter;
 148         return 0;
 149 }
 150
 151 static void
 152 ssovf_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *dev_info)
 153 {
 154         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
 155
 156         dev_info->min_dequeue_timeout_ns = edev->min_deq_timeout_ns;
 157         dev_info->max_dequeue_timeout_ns = edev->max_deq_timeout_ns;
 158         dev_info->max_event_queues = edev->max_event_queues;
 159         dev_info->max_event_queue_flows = (1ULL << 20);
 160         dev_info->max_event_queue_priority_levels = 8;
 161         dev_info->max_event_priority_levels = 1;
 162         dev_info->max_event_ports = edev->max_event_ports;
 163         dev_info->max_event_port_dequeue_depth = 1;
 164         dev_info->max_event_port_enqueue_depth = 1;
 165         dev_info->max_num_events =  edev->max_num_events;
 166         dev_info->event_dev_cap = RTE_EVENT_DEV_CAP_QUEUE_QOS |
 167                                         RTE_EVENT_DEV_CAP_DISTRIBUTED_SCHED |
 168                                         RTE_EVENT_DEV_CAP_QUEUE_ALL_TYPES;
 169 }
 170
 171 static int
 172 ssovf_configure(const struct rte_eventdev *dev)
 173 {
 174         struct rte_event_dev_config *conf = &dev->data->dev_conf;
 175         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
 176         uint64_t deq_tmo_ns;
 177
 178         ssovf_func_trace();
 179         deq_tmo_ns = conf->dequeue_timeout_ns;
 180
 181         if (conf->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT) {
 182                 edev->is_timeout_deq = 1;
 183                 deq_tmo_ns = edev->min_deq_timeout_ns;
 184         }
 185         edev->nb_event_queues = conf->nb_event_queues;
 186         edev->nb_event_ports = conf->nb_event_ports;
 187
 188         return ssovf_mbox_getwork_tmo_set(deq_tmo_ns);
 189 }
 190
 191 static void
 192 ssovf_queue_def_conf(struct rte_eventdev *dev, uint8_t queue_id,
 193                                  struct rte_event_queue_conf *queue_conf)
 194 {
 195         RTE_SET_USED(dev);
 196         RTE_SET_USED(queue_id);
 197
 198         queue_conf->nb_atomic_flows = (1ULL << 20);
 199         queue_conf->nb_atomic_order_sequences = (1ULL << 20);
 200         queue_conf->event_queue_cfg = RTE_EVENT_QUEUE_CFG_ALL_TYPES;
 201         queue_conf->priority = RTE_EVENT_DEV_PRIORITY_NORMAL;
 202 }
 203
 204 static void
 205 ssovf_queue_release(struct rte_eventdev *dev, uint8_t queue_id)
 206 {
 207         RTE_SET_USED(dev);
 208         RTE_SET_USED(queue_id);
 209 }
 210
 211 static int
 212 ssovf_queue_setup(struct rte_eventdev *dev, uint8_t queue_id,
 213                               const struct rte_event_queue_conf *queue_conf)
 214 {
 215         RTE_SET_USED(dev);
 216         ssovf_func_trace("queue=%d prio=%d", queue_id, queue_conf->priority);
 217
 218         return ssovf_mbox_priority_set(queue_id, queue_conf->priority);
 219 }
 220
 221 static void
 222 ssovf_port_def_conf(struct rte_eventdev *dev, uint8_t port_id,
 223                                  struct rte_event_port_conf *port_conf)
 224 {
 225         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
 226
 227         RTE_SET_USED(port_id);
 228         port_conf->new_event_threshold = edev->max_num_events;
 229         port_conf->dequeue_depth = 1;
 230         port_conf->enqueue_depth = 1;
 231 }
 232
 233 static void
 234 ssovf_port_release(void *port)
 235 {
 236         rte_free(port);
 237 }
 238
 239 static int
 240 ssovf_port_setup(struct rte_eventdev *dev, uint8_t port_id,
 241                                 const struct rte_event_port_conf *port_conf)
 242 {
 243         struct ssows *ws;
 244         uint32_t reg_off;
 245         uint8_t q;
 246         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
 247
 248         ssovf_func_trace("port=%d", port_id);
 249         RTE_SET_USED(port_conf);
 250
 251         /* Free memory prior to re-allocation if needed */
 252         if (dev->data->ports[port_id] != NULL) {
 253                 ssovf_port_release(dev->data->ports[port_id]);
 254                 dev->data->ports[port_id] = NULL;
 255         }
 256
 257         /* Allocate event port memory */
 258         ws = rte_zmalloc_socket("eventdev ssows",
 259                         sizeof(struct ssows), RTE_CACHE_LINE_SIZE,
 260                         dev->data->socket_id);
 261         if (ws == NULL) {
 262                 ssovf_log_err("Failed to alloc memory for port=%d", port_id);
 263                 return -ENOMEM;
 264         }
 265
 266         ws->base = octeontx_ssovf_bar(OCTEONTX_SSO_HWS, port_id, 0);
 267         if (ws->base == NULL) {
 268                 rte_free(ws);
 269                 ssovf_log_err("Failed to get hws base addr port=%d", port_id);
 270                 return -EINVAL;
 271         }
 272
 273         reg_off = SSOW_VHWS_OP_GET_WORK0;
 274         reg_off |= 1 << 4; /* Index_ggrp_mask (Use maskset zero) */
 275         reg_off |= 1 << 16; /* Wait */
 276         ws->getwork = ws->base + reg_off;
 277         ws->port = port_id;
 278
 279         for (q = 0; q < edev->nb_event_queues; q++) {
 280                 ws->grps[q] = octeontx_ssovf_bar(OCTEONTX_SSO_GROUP, q, 2);
 281                 if (ws->grps[q] == NULL) {
 282                         rte_free(ws);
 283                         ssovf_log_err("Failed to get grp%d base addr", q);
 284                         return -EINVAL;
 285                 }
 286         }
 287
 288         dev->data->ports[port_id] = ws;
 289         ssovf_log_dbg("port=%d ws=%p", port_id, ws);
 290         return 0;
 291 }
 292
 293 static int
 294 ssovf_port_link(struct rte_eventdev *dev, void *port, const uint8_t queues[],
 295                 const uint8_t priorities[], uint16_t nb_links)
 296 {
 297         uint16_t link;
 298         uint64_t val;
 299         struct ssows *ws = port;
 300
 301         ssovf_func_trace("port=%d nb_links=%d", ws->port, nb_links);
 302         RTE_SET_USED(dev);
 303         RTE_SET_USED(priorities);
 304
 305         for (link = 0; link < nb_links; link++) {
 306                 val = queues[link];
 307                 val |= (1ULL << 24); /* Set membership */
 308                 ssovf_write64(val, ws->base + SSOW_VHWS_GRPMSK_CHGX(0));
 309         }
 310         return (int)nb_links;
 311 }
 312
 313 static int
 314 ssovf_port_unlink(struct rte_eventdev *dev, void *port, uint8_t queues[],
 315                         uint16_t nb_unlinks)
 316 {
 317         uint16_t unlink;
 318         uint64_t val;
 319         struct ssows *ws = port;
 320
 321         ssovf_func_trace("port=%d nb_links=%d", ws->port, nb_unlinks);
 322         RTE_SET_USED(dev);
 323
 324         for (unlink = 0; unlink < nb_unlinks; unlink++) {
 325                 val = queues[unlink];
 326                 val &= ~(1ULL << 24); /* Clear membership */
 327                 ssovf_write64(val, ws->base + SSOW_VHWS_GRPMSK_CHGX(0));
 328         }
 329         return (int)nb_unlinks;
 330 }
 331
 332 static int
 333 ssovf_timeout_ticks(struct rte_eventdev *dev, uint64_t ns, uint64_t *tmo_ticks)
 334 {
 335         RTE_SET_USED(dev);
 336
 337         return ssovf_mbox_timeout_ticks(ns, tmo_ticks);
 338 }
 339
 340 /* Initialize and register event driver with DPDK Application */
 341 static const struct rte_eventdev_ops ssovf_ops = {
 342         .dev_infos_get    = ssovf_info_get,
 343         .dev_configure    = ssovf_configure,
 344         .queue_def_conf   = ssovf_queue_def_conf,
 345         .queue_setup      = ssovf_queue_setup,
 346         .queue_release    = ssovf_queue_release,
 347         .port_def_conf    = ssovf_port_def_conf,
 348         .port_setup       = ssovf_port_setup,
 349         .port_release     = ssovf_port_release,
 350         .port_link        = ssovf_port_link,
 351         .port_unlink      = ssovf_port_unlink,
 352         .timeout_ticks    = ssovf_timeout_ticks,
 353 };
 354
 355 static int
 356 ssovf_vdev_probe(const char *name, const char *params)
 357 {
 358         struct octeontx_ssovf_info oinfo;
 359         struct ssovf_mbox_dev_info info;
 360         struct ssovf_evdev *edev;
 361         struct rte_eventdev *eventdev;
 362         static int ssovf_init_once;
 363         int ret;
 364
 365         RTE_SET_USED(params);
 366
 367         /* More than one instance is not supported */
 368         if (ssovf_init_once) {
 369                 ssovf_log_err("Request to create >1 %s instance", name);
 370                 return -EINVAL;
 371         }
 372
 373         eventdev = rte_event_pmd_vdev_init(name, sizeof(struct ssovf_evdev),
 374                                 rte_socket_id());
 375         if (eventdev == NULL) {
 376                 ssovf_log_err("Failed to create eventdev vdev %s", name);
 377                 return -ENOMEM;
 378         }
 379         eventdev->dev_ops = &ssovf_ops;
 380
 381         /* For secondary processes, the primary has done all the work */
 382         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 383                 return 0;
 384
 385         ret = octeontx_ssovf_info(&oinfo);
 386         if (ret) {
 387                 ssovf_log_err("Failed to probe and validate ssovfs %d", ret);
 388                 goto error;
 389         }
 390
 391         edev = ssovf_pmd_priv(eventdev);
 392         edev->max_event_ports = oinfo.total_ssowvfs;
 393         edev->max_event_queues = oinfo.total_ssovfs;
 394         edev->is_timeout_deq = 0;
 395
 396         ret = ssovf_mbox_dev_info(&info);
 397         if (ret < 0 || ret != sizeof(struct ssovf_mbox_dev_info)) {
 398                 ssovf_log_err("Failed to get mbox devinfo %d", ret);
 399                 goto error;
 400         }
 401
 402         edev->min_deq_timeout_ns = info.min_deq_timeout_ns;
 403         edev->max_deq_timeout_ns = info.max_deq_timeout_ns;
 404         edev->max_num_events =  info.max_num_events;
 405         ssovf_log_dbg("min_deq_tmo=%"PRId64" max_deq_tmo=%"PRId64" max_evts=%d",
 406                         info.min_deq_timeout_ns, info.max_deq_timeout_ns,
 407                         info.max_num_events);
 408
 409         if (!edev->max_event_ports || !edev->max_event_queues) {
 410                 ssovf_log_err("Not enough eventdev resource queues=%d ports=%d",
 411                         edev->max_event_queues, edev->max_event_ports);
 412                 ret = -ENODEV;
 413                 goto error;
 414         }
 415
 416         ssovf_log_info("Initializing %s domain=%d max_queues=%d max_ports=%d",
 417                         name, oinfo.domain, edev->max_event_queues,
 418                         edev->max_event_ports);
 419
 420         ssovf_init_once = 1;
 421         return 0;
 422
 423 error:
 424         rte_event_pmd_vdev_uninit(name);
 425         return ret;
 426 }
 427
 428 static int
 429 ssovf_vdev_remove(const char *name)
 430 {
 431         ssovf_log_info("Closing %s", name);
 432         return rte_event_pmd_vdev_uninit(name);
 433 }
 434
 435 static struct rte_vdev_driver vdev_ssovf_pmd = {
 436         .probe = ssovf_vdev_probe,
 437         .remove = ssovf_vdev_remove
 438 };
 439
 440 RTE_PMD_REGISTER_VDEV(EVENTDEV_NAME_OCTEONTX_PMD, vdev_ssovf_pmd);