drivers/bus/dpaa/dpaa_bus.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  *   Copyright 2017 NXP
   4  *
   5  */
   6 /* System headers */
   7 #include <stdio.h>
   8 #include <inttypes.h>
   9 #include <unistd.h>
  10 #include <limits.h>
  11 #include <sched.h>
  12 #include <signal.h>
  13 #include <pthread.h>
  14 #include <sys/types.h>
  15 #include <sys/syscall.h>
  16
  17 #include <rte_byteorder.h>
  18 #include <rte_common.h>
  19 #include <rte_interrupts.h>
  20 #include <rte_log.h>
  21 #include <rte_debug.h>
  22 #include <rte_pci.h>
  23 #include <rte_atomic.h>
  24 #include <rte_branch_prediction.h>
  25 #include <rte_memory.h>
  26 #include <rte_tailq.h>
  27 #include <rte_eal.h>
  28 #include <rte_alarm.h>
  29 #include <rte_ether.h>
  30 #include <rte_ethdev_driver.h>
  31 #include <rte_malloc.h>
  32 #include <rte_ring.h>
  33 #include <rte_bus.h>
  34 #include <rte_mbuf_pool_ops.h>
  35
  36 #include <rte_dpaa_bus.h>
  37 #include <rte_dpaa_logs.h>
  38
  39 #include <fsl_usd.h>
  40 #include <fsl_qman.h>
  41 #include <fsl_bman.h>
  42 #include <of.h>
  43 #include <netcfg.h>
  44
  45 int dpaa_logtype_bus;
  46 int dpaa_logtype_mempool;
  47 int dpaa_logtype_pmd;
  48 int dpaa_logtype_eventdev;
  49
  50 struct rte_dpaa_bus rte_dpaa_bus;
  51 struct netcfg_info *dpaa_netcfg;
  52
  53 /* define a variable to hold the portal_key, once created.*/
  54 pthread_key_t dpaa_portal_key;
  55
  56 unsigned int dpaa_svr_family;
  57
  58 RTE_DEFINE_PER_LCORE(bool, dpaa_io);
  59 RTE_DEFINE_PER_LCORE(struct dpaa_portal_dqrr, held_bufs);
  60
  61 static int
  62 compare_dpaa_devices(struct rte_dpaa_device *dev1,
  63                      struct rte_dpaa_device *dev2)
  64 {
  65         int comp = 0;
  66
  67         /* Segragating ETH from SEC devices */
  68         if (dev1->device_type > dev2->device_type)
  69                 comp = 1;
  70         else if (dev1->device_type < dev2->device_type)
  71                 comp = -1;
  72         else
  73                 comp = 0;
  74
  75         if ((comp != 0) || (dev1->device_type != FSL_DPAA_ETH))
  76                 return comp;
  77
  78         if (dev1->id.fman_id > dev2->id.fman_id) {
  79                 comp = 1;
  80         } else if (dev1->id.fman_id < dev2->id.fman_id) {
  81                 comp = -1;
  82         } else {
  83                 /* FMAN ids match, check for mac_id */
  84                 if (dev1->id.mac_id > dev2->id.mac_id)
  85                         comp = 1;
  86                 else if (dev1->id.mac_id < dev2->id.mac_id)
  87                         comp = -1;
  88                 else
  89                         comp = 0;
  90         }
  91
  92         return comp;
  93 }
  94
  95 static inline void
  96 dpaa_add_to_device_list(struct rte_dpaa_device *newdev)
  97 {
  98         int comp, inserted = 0;
  99         struct rte_dpaa_device *dev = NULL;
 100         struct rte_dpaa_device *tdev = NULL;
 101
 102         TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
 103                 comp = compare_dpaa_devices(newdev, dev);
 104                 if (comp < 0) {
 105                         TAILQ_INSERT_BEFORE(dev, newdev, next);
 106                         inserted = 1;
 107                         break;
 108                 }
 109         }
 110
 111         if (!inserted)
 112                 TAILQ_INSERT_TAIL(&rte_dpaa_bus.device_list, newdev, next);
 113 }
 114
 115 /*
 116  * Reads the SEC device from DTS
 117  * Returns -1 if SEC devices not available, 0 otherwise
 118  */
 119 static inline int
 120 dpaa_sec_available(void)
 121 {
 122         const struct device_node *caam_node;
 123
 124         for_each_compatible_node(caam_node, NULL, "fsl,sec-v4.0") {
 125                 return 0;
 126         }
 127
 128         return -1;
 129 }
 130
 131 static void dpaa_clean_device_list(void);
 132
 133 static int
 134 dpaa_create_device_list(void)
 135 {
 136         int i;
 137         int ret;
 138         struct rte_dpaa_device *dev;
 139         struct fm_eth_port_cfg *cfg;
 140         struct fman_if *fman_intf;
 141
 142         /* Creating Ethernet Devices */
 143         for (i = 0; i < dpaa_netcfg->num_ethports; i++) {
 144                 dev = calloc(1, sizeof(struct rte_dpaa_device));
 145                 if (!dev) {
 146                         DPAA_BUS_LOG(ERR, "Failed to allocate ETH devices");
 147                         ret = -ENOMEM;
 148                         goto cleanup;
 149                 }
 150
 151                 cfg = &dpaa_netcfg->port_cfg[i];
 152                 fman_intf = cfg->fman_if;
 153
 154                 /* Device identifiers */
 155                 dev->id.fman_id = fman_intf->fman_idx + 1;
 156                 dev->id.mac_id = fman_intf->mac_idx;
 157                 dev->device_type = FSL_DPAA_ETH;
 158                 dev->id.dev_id = i;
 159
 160                 /* Create device name */
 161                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 162                 sprintf(dev->name, "fm%d-mac%d", (fman_intf->fman_idx + 1),
 163                         fman_intf->mac_idx);
 164                 DPAA_BUS_LOG(DEBUG, "Device added: %s", dev->name);
 165                 dev->device.name = dev->name;
 166
 167                 dpaa_add_to_device_list(dev);
 168         }
 169
 170         rte_dpaa_bus.device_count = i;
 171
 172         /* Unlike case of ETH, RTE_LIBRTE_DPAA_MAX_CRYPTODEV SEC devices are
 173          * constantly created only if "sec" property is found in the device
 174          * tree. Logically there is no limit for number of devices (QI
 175          * interfaces) that can be created.
 176          */
 177
 178         if (dpaa_sec_available()) {
 179                 DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
 180                 return 0;
 181         }
 182
 183         /* Creating SEC Devices */
 184         for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
 185                 dev = calloc(1, sizeof(struct rte_dpaa_device));
 186                 if (!dev) {
 187                         DPAA_BUS_LOG(ERR, "Failed to allocate SEC devices");
 188                         ret = -1;
 189                         goto cleanup;
 190                 }
 191
 192                 dev->device_type = FSL_DPAA_CRYPTO;
 193                 dev->id.dev_id = rte_dpaa_bus.device_count + i;
 194
 195                 /* Even though RTE_CRYPTODEV_NAME_MAX_LEN is valid length of
 196                  * crypto PMD, using RTE_ETH_NAME_MAX_LEN as that is the size
 197                  * allocated for dev->name/
 198                  */
 199                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 200                 sprintf(dev->name, "dpaa-sec%d", i);
 201                 DPAA_BUS_LOG(DEBUG, "Device added: %s", dev->name);
 202
 203                 dpaa_add_to_device_list(dev);
 204         }
 205
 206         rte_dpaa_bus.device_count += i;
 207
 208         return 0;
 209
 210 cleanup:
 211         dpaa_clean_device_list();
 212         return ret;
 213 }
 214
 215 static void
 216 dpaa_clean_device_list(void)
 217 {
 218         struct rte_dpaa_device *dev = NULL;
 219         struct rte_dpaa_device *tdev = NULL;
 220
 221         TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
 222                 TAILQ_REMOVE(&rte_dpaa_bus.device_list, dev, next);
 223                 free(dev);
 224                 dev = NULL;
 225         }
 226 }
 227
 228 int rte_dpaa_portal_init(void *arg)
 229 {
 230         cpu_set_t cpuset;
 231         pthread_t id;
 232         uint32_t cpu = rte_lcore_id();
 233         int ret;
 234         struct dpaa_portal *dpaa_io_portal;
 235
 236         BUS_INIT_FUNC_TRACE();
 237
 238         if ((uint64_t)arg == 1 || cpu == LCORE_ID_ANY)
 239                 cpu = rte_get_master_lcore();
 240         /* if the core id is not supported */
 241         else
 242                 if (cpu >= RTE_MAX_LCORE)
 243                         return -1;
 244
 245         /* Set CPU affinity for this thread */
 246         CPU_ZERO(&cpuset);
 247         CPU_SET(cpu, &cpuset);
 248         id = pthread_self();
 249         ret = pthread_setaffinity_np(id, sizeof(cpu_set_t), &cpuset);
 250         if (ret) {
 251                 DPAA_BUS_LOG(ERR, "pthread_setaffinity_np failed on "
 252                         "core :%d with ret: %d", cpu, ret);
 253                 return ret;
 254         }
 255
 256         /* Initialise bman thread portals */
 257         ret = bman_thread_init();
 258         if (ret) {
 259                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on "
 260                         "core %d with ret: %d", cpu, ret);
 261                 return ret;
 262         }
 263
 264         DPAA_BUS_LOG(DEBUG, "BMAN thread initialized");
 265
 266         /* Initialise qman thread portals */
 267         ret = qman_thread_init();
 268         if (ret) {
 269                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on "
 270                         "core %d with ret: %d", cpu, ret);
 271                 bman_thread_finish();
 272                 return ret;
 273         }
 274
 275         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
 276
 277         dpaa_io_portal = rte_malloc(NULL, sizeof(struct dpaa_portal),
 278                                     RTE_CACHE_LINE_SIZE);
 279         if (!dpaa_io_portal) {
 280                 DPAA_BUS_LOG(ERR, "Unable to allocate memory");
 281                 bman_thread_finish();
 282                 qman_thread_finish();
 283                 return -ENOMEM;
 284         }
 285
 286         dpaa_io_portal->qman_idx = qman_get_portal_index();
 287         dpaa_io_portal->bman_idx = bman_get_portal_index();
 288         dpaa_io_portal->tid = syscall(SYS_gettid);
 289
 290         ret = pthread_setspecific(dpaa_portal_key, (void *)dpaa_io_portal);
 291         if (ret) {
 292                 DPAA_BUS_LOG(ERR, "pthread_setspecific failed on "
 293                             "core %d with ret: %d", cpu, ret);
 294                 dpaa_portal_finish(NULL);
 295
 296                 return ret;
 297         }
 298
 299         RTE_PER_LCORE(dpaa_io) = true;
 300
 301         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
 302
 303         return 0;
 304 }
 305
 306 int
 307 rte_dpaa_portal_fq_init(void *arg, struct qman_fq *fq)
 308 {
 309         /* Affine above created portal with channel*/
 310         u32 sdqcr;
 311         struct qman_portal *qp;
 312
 313         if (unlikely(!RTE_PER_LCORE(dpaa_io)))
 314                 rte_dpaa_portal_init(arg);
 315
 316         /* Initialise qman specific portals */
 317         qp = fsl_qman_portal_create();
 318         if (!qp) {
 319                 DPAA_BUS_LOG(ERR, "Unable to alloc fq portal");
 320                 return -1;
 321         }
 322         fq->qp = qp;
 323         sdqcr = QM_SDQCR_CHANNELS_POOL_CONV(fq->ch_id);
 324         qman_static_dequeue_add(sdqcr, qp);
 325
 326         return 0;
 327 }
 328
 329 int rte_dpaa_portal_fq_close(struct qman_fq *fq)
 330 {
 331         return fsl_qman_portal_destroy(fq->qp);
 332 }
 333
 334 void
 335 dpaa_portal_finish(void *arg)
 336 {
 337         struct dpaa_portal *dpaa_io_portal = (struct dpaa_portal *)arg;
 338
 339         if (!dpaa_io_portal) {
 340                 DPAA_BUS_LOG(DEBUG, "Portal already cleaned");
 341                 return;
 342         }
 343
 344         bman_thread_finish();
 345         qman_thread_finish();
 346
 347         pthread_setspecific(dpaa_portal_key, NULL);
 348
 349         rte_free(dpaa_io_portal);
 350         dpaa_io_portal = NULL;
 351
 352         RTE_PER_LCORE(dpaa_io) = false;
 353 }
 354
 355 #define DPAA_DEV_PATH1 "/sys/devices/platform/soc/soc:fsl,dpaa"
 356 #define DPAA_DEV_PATH2 "/sys/devices/platform/fsl,dpaa"
 357
 358 static int
 359 rte_dpaa_bus_scan(void)
 360 {
 361         int ret;
 362
 363         BUS_INIT_FUNC_TRACE();
 364
 365         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
 366             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
 367                 RTE_LOG(DEBUG, EAL, "DPAA Bus not present. Skipping.\n");
 368                 return 0;
 369         }
 370
 371         /* Load the device-tree driver */
 372         ret = of_init();
 373         if (ret) {
 374                 DPAA_BUS_LOG(ERR, "of_init failed with ret: %d", ret);
 375                 return -1;
 376         }
 377
 378         /* Get the interface configurations from device-tree */
 379         dpaa_netcfg = netcfg_acquire();
 380         if (!dpaa_netcfg) {
 381                 DPAA_BUS_LOG(ERR, "netcfg_acquire failed");
 382                 return -EINVAL;
 383         }
 384
 385         RTE_LOG(NOTICE, EAL, "DPAA Bus Detected\n");
 386
 387         if (!dpaa_netcfg->num_ethports) {
 388                 DPAA_BUS_LOG(INFO, "no network interfaces available");
 389                 /* This is not an error */
 390                 return 0;
 391         }
 392
 393         DPAA_BUS_LOG(DEBUG, "Bus: Address of netcfg=%p, Ethports=%d",
 394                      dpaa_netcfg, dpaa_netcfg->num_ethports);
 395
 396 #ifdef RTE_LIBRTE_DPAA_DEBUG_DRIVER
 397         dump_netcfg(dpaa_netcfg);
 398 #endif
 399
 400         DPAA_BUS_LOG(DEBUG, "Number of devices = %d\n",
 401                      dpaa_netcfg->num_ethports);
 402         ret = dpaa_create_device_list();
 403         if (ret) {
 404                 DPAA_BUS_LOG(ERR, "Unable to create device list. (%d)", ret);
 405                 return ret;
 406         }
 407
 408         /* create the key, supplying a function that'll be invoked
 409          * when a portal affined thread will be deleted.
 410          */
 411         ret = pthread_key_create(&dpaa_portal_key, dpaa_portal_finish);
 412         if (ret) {
 413                 DPAA_BUS_LOG(DEBUG, "Unable to create pthread key. (%d)", ret);
 414                 dpaa_clean_device_list();
 415                 return ret;
 416         }
 417
 418         DPAA_BUS_LOG(DEBUG, "dpaa_portal_key=%u, ret=%d\n",
 419                     (unsigned int)dpaa_portal_key, ret);
 420
 421         return 0;
 422 }
 423
 424 /* register a dpaa bus based dpaa driver */
 425 void
 426 rte_dpaa_driver_register(struct rte_dpaa_driver *driver)
 427 {
 428         RTE_VERIFY(driver);
 429
 430         BUS_INIT_FUNC_TRACE();
 431
 432         TAILQ_INSERT_TAIL(&rte_dpaa_bus.driver_list, driver, next);
 433         /* Update Bus references */
 434         driver->dpaa_bus = &rte_dpaa_bus;
 435 }
 436
 437 /* un-register a dpaa bus based dpaa driver */
 438 void
 439 rte_dpaa_driver_unregister(struct rte_dpaa_driver *driver)
 440 {
 441         struct rte_dpaa_bus *dpaa_bus;
 442
 443         BUS_INIT_FUNC_TRACE();
 444
 445         dpaa_bus = driver->dpaa_bus;
 446
 447         TAILQ_REMOVE(&dpaa_bus->driver_list, driver, next);
 448         /* Update Bus references */
 449         driver->dpaa_bus = NULL;
 450 }
 451
 452 static int
 453 rte_dpaa_device_match(struct rte_dpaa_driver *drv,
 454                       struct rte_dpaa_device *dev)
 455 {
 456         int ret = -1;
 457
 458         BUS_INIT_FUNC_TRACE();
 459
 460         if (!drv || !dev) {
 461                 DPAA_BUS_DEBUG("Invalid drv or dev received.");
 462                 return ret;
 463         }
 464
 465         if (drv->drv_type == dev->device_type) {
 466                 DPAA_BUS_INFO("Device: %s matches for driver: %s",
 467                               dev->name, drv->driver.name);
 468                 ret = 0; /* Found a match */
 469         }
 470
 471         return ret;
 472 }
 473
 474 static int
 475 rte_dpaa_bus_probe(void)
 476 {
 477         int ret = -1;
 478         struct rte_dpaa_device *dev;
 479         struct rte_dpaa_driver *drv;
 480         FILE *svr_file = NULL;
 481         unsigned int svr_ver;
 482
 483         BUS_INIT_FUNC_TRACE();
 484
 485         /* For each registered driver, and device, call the driver->probe */
 486         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
 487                 TAILQ_FOREACH(drv, &rte_dpaa_bus.driver_list, next) {
 488                         ret = rte_dpaa_device_match(drv, dev);
 489                         if (ret)
 490                                 continue;
 491
 492                         if (!drv->probe)
 493                                 continue;
 494
 495                         ret = drv->probe(drv, dev);
 496                         if (ret)
 497                                 DPAA_BUS_ERR("Unable to probe.\n");
 498
 499                         break;
 500                 }
 501         }
 502
 503         /* Register DPAA mempool ops only if any DPAA device has
 504          * been detected.
 505          */
 506         if (!TAILQ_EMPTY(&rte_dpaa_bus.device_list))
 507                 rte_mbuf_set_platform_mempool_ops(DPAA_MEMPOOL_OPS_NAME);
 508
 509         svr_file = fopen(DPAA_SOC_ID_FILE, "r");
 510         if (svr_file) {
 511                 if (fscanf(svr_file, "svr:%x", &svr_ver) > 0)
 512                         dpaa_svr_family = svr_ver & SVR_MASK;
 513                 fclose(svr_file);
 514         }
 515
 516         return 0;
 517 }
 518
 519 static struct rte_device *
 520 rte_dpaa_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
 521                      const void *data)
 522 {
 523         struct rte_dpaa_device *dev;
 524
 525         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
 526                 if (start && &dev->device == start) {
 527                         start = NULL;  /* starting point found */
 528                         continue;
 529                 }
 530
 531                 if (cmp(&dev->device, data) == 0)
 532                         return &dev->device;
 533         }
 534
 535         return NULL;
 536 }
 537
 538 /*
 539  * Get iommu class of DPAA2 devices on the bus.
 540  */
 541 static enum rte_iova_mode
 542 rte_dpaa_get_iommu_class(void)
 543 {
 544         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
 545             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
 546                 return RTE_IOVA_DC;
 547         }
 548         return RTE_IOVA_PA;
 549 }
 550
 551 struct rte_dpaa_bus rte_dpaa_bus = {
 552         .bus = {
 553                 .scan = rte_dpaa_bus_scan,
 554                 .probe = rte_dpaa_bus_probe,
 555                 .find_device = rte_dpaa_find_device,
 556                 .get_iommu_class = rte_dpaa_get_iommu_class,
 557         },
 558         .device_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.device_list),
 559         .driver_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.driver_list),
 560         .device_count = 0,
 561 };
 562
 563 RTE_REGISTER_BUS(FSL_DPAA_BUS_NAME, rte_dpaa_bus.bus);
 564
 565 RTE_INIT(dpaa_init_log);
 566 static void
 567 dpaa_init_log(void)
 568 {
 569         dpaa_logtype_bus = rte_log_register("bus.dpaa");
 570         if (dpaa_logtype_bus >= 0)
 571                 rte_log_set_level(dpaa_logtype_bus, RTE_LOG_NOTICE);
 572
 573         dpaa_logtype_mempool = rte_log_register("mempool.dpaa");
 574         if (dpaa_logtype_mempool >= 0)
 575                 rte_log_set_level(dpaa_logtype_mempool, RTE_LOG_NOTICE);
 576
 577         dpaa_logtype_pmd = rte_log_register("pmd.dpaa");
 578         if (dpaa_logtype_pmd >= 0)
 579                 rte_log_set_level(dpaa_logtype_pmd, RTE_LOG_NOTICE);
 580
 581         dpaa_logtype_eventdev = rte_log_register("eventdev.dpaa");
 582         if (dpaa_logtype_eventdev >= 0)
 583                 rte_log_set_level(dpaa_logtype_eventdev, RTE_LOG_NOTICE);
 584 }