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 static void
 193 ssovf_port_def_conf(struct rte_eventdev *dev, uint8_t port_id,
 194                                  struct rte_event_port_conf *port_conf)
 195 {
 196         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
 197
 198         RTE_SET_USED(port_id);
 199         port_conf->new_event_threshold = edev->max_num_events;
 200         port_conf->dequeue_depth = 1;
 201         port_conf->enqueue_depth = 1;
 202 }
 203
 204 static void
 205 ssovf_port_release(void *port)
 206 {
 207         rte_free(port);
 208 }
 209
 210 static int
 211 ssovf_port_setup(struct rte_eventdev *dev, uint8_t port_id,
 212                                 const struct rte_event_port_conf *port_conf)
 213 {
 214         struct ssows *ws;
 215         uint32_t reg_off;
 216         uint8_t q;
 217         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
 218
 219         ssovf_func_trace("port=%d", port_id);
 220         RTE_SET_USED(port_conf);
 221
 222         /* Free memory prior to re-allocation if needed */
 223         if (dev->data->ports[port_id] != NULL) {
 224                 ssovf_port_release(dev->data->ports[port_id]);
 225                 dev->data->ports[port_id] = NULL;
 226         }
 227
 228         /* Allocate event port memory */
 229         ws = rte_zmalloc_socket("eventdev ssows",
 230                         sizeof(struct ssows), RTE_CACHE_LINE_SIZE,
 231                         dev->data->socket_id);
 232         if (ws == NULL) {
 233                 ssovf_log_err("Failed to alloc memory for port=%d", port_id);
 234                 return -ENOMEM;
 235         }
 236
 237         ws->base = octeontx_ssovf_bar(OCTEONTX_SSO_HWS, port_id, 0);
 238         if (ws->base == NULL) {
 239                 rte_free(ws);
 240                 ssovf_log_err("Failed to get hws base addr port=%d", port_id);
 241                 return -EINVAL;
 242         }
 243
 244         reg_off = SSOW_VHWS_OP_GET_WORK0;
 245         reg_off |= 1 << 4; /* Index_ggrp_mask (Use maskset zero) */
 246         reg_off |= 1 << 16; /* Wait */
 247         ws->getwork = ws->base + reg_off;
 248         ws->port = port_id;
 249
 250         for (q = 0; q < edev->nb_event_queues; q++) {
 251                 ws->grps[q] = octeontx_ssovf_bar(OCTEONTX_SSO_GROUP, q, 2);
 252                 if (ws->grps[q] == NULL) {
 253                         rte_free(ws);
 254                         ssovf_log_err("Failed to get grp%d base addr", q);
 255                         return -EINVAL;
 256                 }
 257         }
 258
 259         dev->data->ports[port_id] = ws;
 260         ssovf_log_dbg("port=%d ws=%p", port_id, ws);
 261         return 0;
 262 }
 263
 264 static int
 265 ssovf_port_link(struct rte_eventdev *dev, void *port, const uint8_t queues[],
 266                 const uint8_t priorities[], uint16_t nb_links)
 267 {
 268         uint16_t link;
 269         uint64_t val;
 270         struct ssows *ws = port;
 271
 272         ssovf_func_trace("port=%d nb_links=%d", ws->port, nb_links);
 273         RTE_SET_USED(dev);
 274         RTE_SET_USED(priorities);
 275
 276         for (link = 0; link < nb_links; link++) {
 277                 val = queues[link];
 278                 val |= (1ULL << 24); /* Set membership */
 279                 ssovf_write64(val, ws->base + SSOW_VHWS_GRPMSK_CHGX(0));
 280         }
 281         return (int)nb_links;
 282 }
 283
 284 static int
 285 ssovf_port_unlink(struct rte_eventdev *dev, void *port, uint8_t queues[],
 286                         uint16_t nb_unlinks)
 287 {
 288         uint16_t unlink;
 289         uint64_t val;
 290         struct ssows *ws = port;
 291
 292         ssovf_func_trace("port=%d nb_links=%d", ws->port, nb_unlinks);
 293         RTE_SET_USED(dev);
 294
 295         for (unlink = 0; unlink < nb_unlinks; unlink++) {
 296                 val = queues[unlink];
 297                 val &= ~(1ULL << 24); /* Clear membership */
 298                 ssovf_write64(val, ws->base + SSOW_VHWS_GRPMSK_CHGX(0));
 299         }
 300         return (int)nb_unlinks;
 301 }
 302
 303 /* Initialize and register event driver with DPDK Application */
 304 static const struct rte_eventdev_ops ssovf_ops = {
 305         .dev_infos_get    = ssovf_info_get,
 306         .dev_configure    = ssovf_configure,
 307         .queue_def_conf   = ssovf_queue_def_conf,
 308         .queue_setup      = ssovf_queue_setup,
 309         .queue_release    = ssovf_queue_release,
 310         .port_def_conf    = ssovf_port_def_conf,
 311         .port_setup       = ssovf_port_setup,
 312         .port_release     = ssovf_port_release,
 313         .port_link        = ssovf_port_link,
 314         .port_unlink      = ssovf_port_unlink,
 315 };
 316
 317 static int
 318 ssovf_vdev_probe(const char *name, const char *params)
 319 {
 320         struct octeontx_ssovf_info oinfo;
 321         struct ssovf_mbox_dev_info info;
 322         struct ssovf_evdev *edev;
 323         struct rte_eventdev *eventdev;
 324         static int ssovf_init_once;
 325         int ret;
 326
 327         RTE_SET_USED(params);
 328
 329         /* More than one instance is not supported */
 330         if (ssovf_init_once) {
 331                 ssovf_log_err("Request to create >1 %s instance", name);
 332                 return -EINVAL;
 333         }
 334
 335         eventdev = rte_event_pmd_vdev_init(name, sizeof(struct ssovf_evdev),
 336                                 rte_socket_id());
 337         if (eventdev == NULL) {
 338                 ssovf_log_err("Failed to create eventdev vdev %s", name);
 339                 return -ENOMEM;
 340         }
 341         eventdev->dev_ops = &ssovf_ops;
 342
 343         /* For secondary processes, the primary has done all the work */
 344         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 345                 return 0;
 346
 347         ret = octeontx_ssovf_info(&oinfo);
 348         if (ret) {
 349                 ssovf_log_err("Failed to probe and validate ssovfs %d", ret);
 350                 goto error;
 351         }
 352
 353         edev = ssovf_pmd_priv(eventdev);
 354         edev->max_event_ports = oinfo.total_ssowvfs;
 355         edev->max_event_queues = oinfo.total_ssovfs;
 356         edev->is_timeout_deq = 0;
 357
 358         ret = ssovf_mbox_dev_info(&info);
 359         if (ret < 0 || ret != sizeof(struct ssovf_mbox_dev_info)) {
 360                 ssovf_log_err("Failed to get mbox devinfo %d", ret);
 361                 goto error;
 362         }
 363
 364         edev->min_deq_timeout_ns = info.min_deq_timeout_ns;
 365         edev->max_deq_timeout_ns = info.max_deq_timeout_ns;
 366         edev->max_num_events =  info.max_num_events;
 367         ssovf_log_dbg("min_deq_tmo=%"PRId64" max_deq_tmo=%"PRId64" max_evts=%d",
 368                         info.min_deq_timeout_ns, info.max_deq_timeout_ns,
 369                         info.max_num_events);
 370
 371         if (!edev->max_event_ports || !edev->max_event_queues) {
 372                 ssovf_log_err("Not enough eventdev resource queues=%d ports=%d",
 373                         edev->max_event_queues, edev->max_event_ports);
 374                 ret = -ENODEV;
 375                 goto error;
 376         }
 377
 378         ssovf_log_info("Initializing %s domain=%d max_queues=%d max_ports=%d",
 379                         name, oinfo.domain, edev->max_event_queues,
 380                         edev->max_event_ports);
 381
 382         ssovf_init_once = 1;
 383         return 0;
 384
 385 error:
 386         rte_event_pmd_vdev_uninit(name);
 387         return ret;
 388 }
 389
 390 static int
 391 ssovf_vdev_remove(const char *name)
 392 {
 393         ssovf_log_info("Closing %s", name);
 394         return rte_event_pmd_vdev_uninit(name);
 395 }
 396
 397 static struct rte_vdev_driver vdev_ssovf_pmd = {
 398         .probe = ssovf_vdev_probe,
 399         .remove = ssovf_vdev_remove
 400 };
 401
 402 RTE_PMD_REGISTER_VDEV(EVENTDEV_NAME_OCTEONTX_PMD, vdev_ssovf_pmd);