drivers/bus/dpaa/dpaa_bus.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  *   Copyright 2017-2019 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_atomic.h>
  23 #include <rte_branch_prediction.h>
  24 #include <rte_memory.h>
  25 #include <rte_tailq.h>
  26 #include <rte_eal.h>
  27 #include <rte_alarm.h>
  28 #include <rte_ether.h>
  29 #include <rte_ethdev_driver.h>
  30 #include <rte_malloc.h>
  31 #include <rte_ring.h>
  32 #include <rte_bus.h>
  33 #include <rte_mbuf_pool_ops.h>
  34
  35 #include <dpaa_of.h>
  36 #include <rte_dpaa_bus.h>
  37 #include <rte_dpaa_logs.h>
  38 #include <dpaax_iova_table.h>
  39
  40 #include <fsl_usd.h>
  41 #include <fsl_qman.h>
  42 #include <fsl_bman.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 static 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 static pthread_key_t dpaa_portal_key;
  55
  56 unsigned int dpaa_svr_family;
  57
  58 #define FSL_DPAA_BUS_NAME       dpaa_bus
  59
  60 RTE_DEFINE_PER_LCORE(bool, dpaa_io);
  61 RTE_DEFINE_PER_LCORE(struct dpaa_portal_dqrr, held_bufs);
  62
  63 static int
  64 compare_dpaa_devices(struct rte_dpaa_device *dev1,
  65                      struct rte_dpaa_device *dev2)
  66 {
  67         int comp = 0;
  68
  69         /* Segragating ETH from SEC devices */
  70         if (dev1->device_type > dev2->device_type)
  71                 comp = 1;
  72         else if (dev1->device_type < dev2->device_type)
  73                 comp = -1;
  74         else
  75                 comp = 0;
  76
  77         if ((comp != 0) || (dev1->device_type != FSL_DPAA_ETH))
  78                 return comp;
  79
  80         if (dev1->id.fman_id > dev2->id.fman_id) {
  81                 comp = 1;
  82         } else if (dev1->id.fman_id < dev2->id.fman_id) {
  83                 comp = -1;
  84         } else {
  85                 /* FMAN ids match, check for mac_id */
  86                 if (dev1->id.mac_id > dev2->id.mac_id)
  87                         comp = 1;
  88                 else if (dev1->id.mac_id < dev2->id.mac_id)
  89                         comp = -1;
  90                 else
  91                         comp = 0;
  92         }
  93
  94         return comp;
  95 }
  96
  97 static inline void
  98 dpaa_add_to_device_list(struct rte_dpaa_device *newdev)
  99 {
 100         int comp, inserted = 0;
 101         struct rte_dpaa_device *dev = NULL;
 102         struct rte_dpaa_device *tdev = NULL;
 103
 104         TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
 105                 comp = compare_dpaa_devices(newdev, dev);
 106                 if (comp < 0) {
 107                         TAILQ_INSERT_BEFORE(dev, newdev, next);
 108                         inserted = 1;
 109                         break;
 110                 }
 111         }
 112
 113         if (!inserted)
 114                 TAILQ_INSERT_TAIL(&rte_dpaa_bus.device_list, newdev, next);
 115 }
 116
 117 /*
 118  * Reads the SEC device from DTS
 119  * Returns -1 if SEC devices not available, 0 otherwise
 120  */
 121 static inline int
 122 dpaa_sec_available(void)
 123 {
 124         const struct device_node *caam_node;
 125
 126         for_each_compatible_node(caam_node, NULL, "fsl,sec-v4.0") {
 127                 return 0;
 128         }
 129
 130         return -1;
 131 }
 132
 133 static void dpaa_clean_device_list(void);
 134
 135 static struct rte_devargs *
 136 dpaa_devargs_lookup(struct rte_dpaa_device *dev)
 137 {
 138         struct rte_devargs *devargs;
 139         char dev_name[32];
 140
 141         RTE_EAL_DEVARGS_FOREACH("dpaa_bus", devargs) {
 142                 devargs->bus->parse(devargs->name, &dev_name);
 143                 if (strcmp(dev_name, dev->device.name) == 0) {
 144                         DPAA_BUS_INFO("**Devargs matched %s", dev_name);
 145                         return devargs;
 146                 }
 147         }
 148         return NULL;
 149 }
 150
 151 static int
 152 dpaa_create_device_list(void)
 153 {
 154         int i;
 155         int ret;
 156         struct rte_dpaa_device *dev;
 157         struct fm_eth_port_cfg *cfg;
 158         struct fman_if *fman_intf;
 159
 160         /* Creating Ethernet Devices */
 161         for (i = 0; i < dpaa_netcfg->num_ethports; i++) {
 162                 dev = calloc(1, sizeof(struct rte_dpaa_device));
 163                 if (!dev) {
 164                         DPAA_BUS_LOG(ERR, "Failed to allocate ETH devices");
 165                         ret = -ENOMEM;
 166                         goto cleanup;
 167                 }
 168
 169                 dev->device.bus = &rte_dpaa_bus.bus;
 170
 171                 cfg = &dpaa_netcfg->port_cfg[i];
 172                 fman_intf = cfg->fman_if;
 173
 174                 /* Device identifiers */
 175                 dev->id.fman_id = fman_intf->fman_idx + 1;
 176                 dev->id.mac_id = fman_intf->mac_idx;
 177                 dev->device_type = FSL_DPAA_ETH;
 178                 dev->id.dev_id = i;
 179
 180                 /* Create device name */
 181                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 182                 sprintf(dev->name, "fm%d-mac%d", (fman_intf->fman_idx + 1),
 183                         fman_intf->mac_idx);
 184                 DPAA_BUS_LOG(INFO, "%s netdev added", dev->name);
 185                 dev->device.name = dev->name;
 186                 dev->device.devargs = dpaa_devargs_lookup(dev);
 187
 188                 dpaa_add_to_device_list(dev);
 189         }
 190
 191         rte_dpaa_bus.device_count = i;
 192
 193         /* Unlike case of ETH, RTE_LIBRTE_DPAA_MAX_CRYPTODEV SEC devices are
 194          * constantly created only if "sec" property is found in the device
 195          * tree. Logically there is no limit for number of devices (QI
 196          * interfaces) that can be created.
 197          */
 198
 199         if (dpaa_sec_available()) {
 200                 DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
 201                 return 0;
 202         }
 203
 204         /* Creating SEC Devices */
 205         for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
 206                 dev = calloc(1, sizeof(struct rte_dpaa_device));
 207                 if (!dev) {
 208                         DPAA_BUS_LOG(ERR, "Failed to allocate SEC devices");
 209                         ret = -1;
 210                         goto cleanup;
 211                 }
 212
 213                 dev->device_type = FSL_DPAA_CRYPTO;
 214                 dev->id.dev_id = rte_dpaa_bus.device_count + i;
 215
 216                 /* Even though RTE_CRYPTODEV_NAME_MAX_LEN is valid length of
 217                  * crypto PMD, using RTE_ETH_NAME_MAX_LEN as that is the size
 218                  * allocated for dev->name/
 219                  */
 220                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 221                 sprintf(dev->name, "dpaa_sec-%d", i+1);
 222                 DPAA_BUS_LOG(INFO, "%s cryptodev added", dev->name);
 223                 dev->device.name = dev->name;
 224                 dev->device.devargs = dpaa_devargs_lookup(dev);
 225
 226                 dpaa_add_to_device_list(dev);
 227         }
 228
 229         rte_dpaa_bus.device_count += i;
 230
 231         return 0;
 232
 233 cleanup:
 234         dpaa_clean_device_list();
 235         return ret;
 236 }
 237
 238 static void
 239 dpaa_clean_device_list(void)
 240 {
 241         struct rte_dpaa_device *dev = NULL;
 242         struct rte_dpaa_device *tdev = NULL;
 243
 244         TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
 245                 TAILQ_REMOVE(&rte_dpaa_bus.device_list, dev, next);
 246                 free(dev);
 247                 dev = NULL;
 248         }
 249 }
 250
 251 int rte_dpaa_portal_init(void *arg)
 252 {
 253         unsigned int cpu, lcore = rte_lcore_id();
 254         int ret;
 255         struct dpaa_portal *dpaa_io_portal;
 256
 257         BUS_INIT_FUNC_TRACE();
 258
 259         if ((size_t)arg == 1 || lcore == LCORE_ID_ANY)
 260                 lcore = rte_get_master_lcore();
 261         else
 262                 if (lcore >= RTE_MAX_LCORE)
 263                         return -1;
 264
 265         cpu = rte_lcore_to_cpu_id(lcore);
 266
 267         /* Initialise bman thread portals */
 268         ret = bman_thread_init();
 269         if (ret) {
 270                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on core %u"
 271                              " (lcore=%u) with ret: %d", cpu, lcore, ret);
 272                 return ret;
 273         }
 274
 275         DPAA_BUS_LOG(DEBUG, "BMAN thread initialized - CPU=%d lcore=%d",
 276                      cpu, lcore);
 277
 278         /* Initialise qman thread portals */
 279         ret = qman_thread_init();
 280         if (ret) {
 281                 DPAA_BUS_LOG(ERR, "qman_thread_init failed on core %u"
 282                             " (lcore=%u) with ret: %d", cpu, lcore, ret);
 283                 bman_thread_finish();
 284                 return ret;
 285         }
 286
 287         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized - CPU=%d lcore=%d",
 288                      cpu, lcore);
 289
 290         dpaa_io_portal = rte_malloc(NULL, sizeof(struct dpaa_portal),
 291                                     RTE_CACHE_LINE_SIZE);
 292         if (!dpaa_io_portal) {
 293                 DPAA_BUS_LOG(ERR, "Unable to allocate memory");
 294                 bman_thread_finish();
 295                 qman_thread_finish();
 296                 return -ENOMEM;
 297         }
 298
 299         dpaa_io_portal->qman_idx = qman_get_portal_index();
 300         dpaa_io_portal->bman_idx = bman_get_portal_index();
 301         dpaa_io_portal->tid = syscall(SYS_gettid);
 302
 303         ret = pthread_setspecific(dpaa_portal_key, (void *)dpaa_io_portal);
 304         if (ret) {
 305                 DPAA_BUS_LOG(ERR, "pthread_setspecific failed on core %u"
 306                              " (lcore=%u) with ret: %d", cpu, lcore, ret);
 307                 dpaa_portal_finish(NULL);
 308
 309                 return ret;
 310         }
 311
 312         RTE_PER_LCORE(dpaa_io) = true;
 313
 314         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
 315
 316         return 0;
 317 }
 318
 319 int
 320 rte_dpaa_portal_fq_init(void *arg, struct qman_fq *fq)
 321 {
 322         /* Affine above created portal with channel*/
 323         u32 sdqcr;
 324         int ret;
 325
 326         if (unlikely(!RTE_PER_LCORE(dpaa_io))) {
 327                 ret = rte_dpaa_portal_init(arg);
 328                 if (ret < 0) {
 329                         DPAA_BUS_LOG(ERR, "portal initialization failure");
 330                         return ret;
 331                 }
 332         }
 333
 334         /* Initialise qman specific portals */
 335         ret = fsl_qman_fq_portal_init(fq->qp);
 336         if (ret) {
 337                 DPAA_BUS_LOG(ERR, "Unable to init fq portal");
 338                 return -1;
 339         }
 340
 341         sdqcr = QM_SDQCR_CHANNELS_POOL_CONV(fq->ch_id);
 342         qman_static_dequeue_add(sdqcr, fq->qp);
 343
 344         return 0;
 345 }
 346
 347 int rte_dpaa_portal_fq_close(struct qman_fq *fq)
 348 {
 349         return fsl_qman_fq_portal_destroy(fq->qp);
 350 }
 351
 352 void
 353 dpaa_portal_finish(void *arg)
 354 {
 355         struct dpaa_portal *dpaa_io_portal = (struct dpaa_portal *)arg;
 356
 357         if (!dpaa_io_portal) {
 358                 DPAA_BUS_LOG(DEBUG, "Portal already cleaned");
 359                 return;
 360         }
 361
 362         bman_thread_finish();
 363         qman_thread_finish();
 364
 365         pthread_setspecific(dpaa_portal_key, NULL);
 366
 367         rte_free(dpaa_io_portal);
 368         dpaa_io_portal = NULL;
 369
 370         RTE_PER_LCORE(dpaa_io) = false;
 371 }
 372
 373 static int
 374 rte_dpaa_bus_parse(const char *name, void *out_name)
 375 {
 376         int i, j;
 377         int max_fman = 2, max_macs = 16;
 378         char *dup_name;
 379         char *sep = NULL;
 380
 381         /* There are two ways of passing device name, with and without
 382          * separator. "dpaa_bus:fm1-mac3" with separator, and "fm1-mac3"
 383          * without separator. Both need to be handled.
 384          * It is also possible that "name=fm1-mac3" is passed along.
 385          */
 386         DPAA_BUS_DEBUG("Parse device name (%s)", name);
 387
 388         /* Check for dpaa_bus:fm1-mac3 style */
 389         dup_name = strdup(name);
 390         sep = strchr(dup_name, ':');
 391         if (!sep)
 392                 /* If not, check for name=fm1-mac3 style */
 393                 sep = strchr(dup_name, '=');
 394
 395         if (sep)
 396                 /* jump over the seprator */
 397                 sep = (char *) (sep + 1);
 398         else
 399                 sep = dup_name;
 400
 401         for (i = 0; i < max_fman; i++) {
 402                 for (j = 0; j < max_macs; j++) {
 403                         char fm_name[16];
 404                         snprintf(fm_name, 16, "fm%d-mac%d", i, j);
 405                         if (strcmp(fm_name, sep) == 0) {
 406                                 if (out_name)
 407                                         strcpy(out_name, sep);
 408                                 free(dup_name);
 409                                 return 0;
 410                         }
 411                 }
 412         }
 413
 414         for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
 415                 char sec_name[16];
 416
 417                 snprintf(sec_name, 16, "dpaa_sec-%d", i+1);
 418                 if (strcmp(sec_name, sep) == 0) {
 419                         if (out_name)
 420                                 strcpy(out_name, sep);
 421                         free(dup_name);
 422                         return 0;
 423                 }
 424         }
 425
 426         free(dup_name);
 427         return -EINVAL;
 428 }
 429
 430 #define DPAA_DEV_PATH1 "/sys/devices/platform/soc/soc:fsl,dpaa"
 431 #define DPAA_DEV_PATH2 "/sys/devices/platform/fsl,dpaa"
 432
 433 static int
 434 rte_dpaa_bus_scan(void)
 435 {
 436         int ret;
 437
 438         BUS_INIT_FUNC_TRACE();
 439
 440         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
 441             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
 442                 RTE_LOG(DEBUG, EAL, "DPAA Bus not present. Skipping.\n");
 443                 return 0;
 444         }
 445
 446         if (rte_dpaa_bus.detected)
 447                 return 0;
 448
 449         rte_dpaa_bus.detected = 1;
 450
 451         /* create the key, supplying a function that'll be invoked
 452          * when a portal affined thread will be deleted.
 453          */
 454         ret = pthread_key_create(&dpaa_portal_key, dpaa_portal_finish);
 455         if (ret) {
 456                 DPAA_BUS_LOG(DEBUG, "Unable to create pthread key. (%d)", ret);
 457                 dpaa_clean_device_list();
 458                 return ret;
 459         }
 460
 461         return 0;
 462 }
 463
 464 /* register a dpaa bus based dpaa driver */
 465 void
 466 rte_dpaa_driver_register(struct rte_dpaa_driver *driver)
 467 {
 468         RTE_VERIFY(driver);
 469
 470         BUS_INIT_FUNC_TRACE();
 471
 472         TAILQ_INSERT_TAIL(&rte_dpaa_bus.driver_list, driver, next);
 473         /* Update Bus references */
 474         driver->dpaa_bus = &rte_dpaa_bus;
 475 }
 476
 477 /* un-register a dpaa bus based dpaa driver */
 478 void
 479 rte_dpaa_driver_unregister(struct rte_dpaa_driver *driver)
 480 {
 481         struct rte_dpaa_bus *dpaa_bus;
 482
 483         BUS_INIT_FUNC_TRACE();
 484
 485         dpaa_bus = driver->dpaa_bus;
 486
 487         TAILQ_REMOVE(&dpaa_bus->driver_list, driver, next);
 488         /* Update Bus references */
 489         driver->dpaa_bus = NULL;
 490 }
 491
 492 static int
 493 rte_dpaa_device_match(struct rte_dpaa_driver *drv,
 494                       struct rte_dpaa_device *dev)
 495 {
 496         if (!drv || !dev) {
 497                 DPAA_BUS_DEBUG("Invalid drv or dev received.");
 498                 return -1;
 499         }
 500
 501         if (drv->drv_type == dev->device_type)
 502                 return 0;
 503
 504         return -1;
 505 }
 506
 507 static int
 508 rte_dpaa_bus_dev_build(void)
 509 {
 510         int ret;
 511
 512         /* Load the device-tree driver */
 513         ret = of_init();
 514         if (ret) {
 515                 DPAA_BUS_LOG(ERR, "of_init failed with ret: %d", ret);
 516                 return -1;
 517         }
 518
 519         /* Get the interface configurations from device-tree */
 520         dpaa_netcfg = netcfg_acquire();
 521         if (!dpaa_netcfg) {
 522                 DPAA_BUS_LOG(ERR, "netcfg_acquire failed");
 523                 return -EINVAL;
 524         }
 525
 526         RTE_LOG(NOTICE, EAL, "DPAA Bus Detected\n");
 527
 528         if (!dpaa_netcfg->num_ethports) {
 529                 DPAA_BUS_LOG(INFO, "no network interfaces available");
 530                 /* This is not an error */
 531                 return 0;
 532         }
 533
 534 #ifdef RTE_LIBRTE_DPAA_DEBUG_DRIVER
 535         dump_netcfg(dpaa_netcfg);
 536 #endif
 537
 538         DPAA_BUS_LOG(DEBUG, "Number of ethernet devices = %d",
 539                      dpaa_netcfg->num_ethports);
 540         ret = dpaa_create_device_list();
 541         if (ret) {
 542                 DPAA_BUS_LOG(ERR, "Unable to create device list. (%d)", ret);
 543                 return ret;
 544         }
 545         return 0;
 546 }
 547
 548 static int
 549 rte_dpaa_bus_probe(void)
 550 {
 551         int ret = -1;
 552         struct rte_dpaa_device *dev;
 553         struct rte_dpaa_driver *drv;
 554         FILE *svr_file = NULL;
 555         unsigned int svr_ver;
 556         int probe_all = rte_dpaa_bus.bus.conf.scan_mode != RTE_BUS_SCAN_WHITELIST;
 557         static int process_once;
 558
 559         /* If DPAA bus is not present nothing needs to be done */
 560         if (!rte_dpaa_bus.detected)
 561                 return 0;
 562
 563         /* Device list creation is only done once */
 564         if (!process_once) {
 565                 rte_dpaa_bus_dev_build();
 566                 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 567                         /* One time load of Qman/Bman drivers */
 568                         ret = qman_global_init();
 569                         if (ret) {
 570                                 DPAA_PMD_ERR("QMAN initialization failed: %d",
 571                                              ret);
 572                                 return ret;
 573                         }
 574                         ret = bman_global_init();
 575                         if (ret) {
 576                                 DPAA_PMD_ERR("BMAN initialization failed: %d",
 577                                              ret);
 578                                 return ret;
 579                         }
 580                 }
 581         }
 582         process_once = 1;
 583
 584         /* If no device present on DPAA bus nothing needs to be done */
 585         if (TAILQ_EMPTY(&rte_dpaa_bus.device_list))
 586                 return 0;
 587
 588         svr_file = fopen(DPAA_SOC_ID_FILE, "r");
 589         if (svr_file) {
 590                 if (fscanf(svr_file, "svr:%x", &svr_ver) > 0)
 591                         dpaa_svr_family = svr_ver & SVR_MASK;
 592                 fclose(svr_file);
 593         }
 594
 595         /* And initialize the PA->VA translation table */
 596         dpaax_iova_table_populate();
 597
 598         /* For each registered driver, and device, call the driver->probe */
 599         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
 600                 TAILQ_FOREACH(drv, &rte_dpaa_bus.driver_list, next) {
 601                         ret = rte_dpaa_device_match(drv, dev);
 602                         if (ret)
 603                                 continue;
 604
 605                         if (rte_dev_is_probed(&dev->device))
 606                                 continue;
 607
 608                         if (!drv->probe ||
 609                             (dev->device.devargs &&
 610                             dev->device.devargs->policy == RTE_DEV_BLACKLISTED))
 611                                 continue;
 612
 613                         if (probe_all ||
 614                             (dev->device.devargs &&
 615                             dev->device.devargs->policy ==
 616                             RTE_DEV_WHITELISTED)) {
 617                                 ret = drv->probe(drv, dev);
 618                                 if (ret) {
 619                                         DPAA_BUS_ERR("unable to probe:%s",
 620                                                      dev->name);
 621                                 } else {
 622                                         dev->driver = drv;
 623                                         dev->device.driver = &drv->driver;
 624                                 }
 625                         }
 626                         break;
 627                 }
 628         }
 629
 630         /* Register DPAA mempool ops only if any DPAA device has
 631          * been detected.
 632          */
 633         rte_mbuf_set_platform_mempool_ops(DPAA_MEMPOOL_OPS_NAME);
 634
 635         return 0;
 636 }
 637
 638 static struct rte_device *
 639 rte_dpaa_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
 640                      const void *data)
 641 {
 642         struct rte_dpaa_device *dev;
 643         const struct rte_dpaa_device *dstart;
 644
 645         /* find_device is called with 'data' as an opaque object - just call
 646          * cmp with this and each device object on bus.
 647          */
 648
 649         if (start != NULL) {
 650                 dstart = RTE_DEV_TO_DPAA_CONST(start);
 651                 dev = TAILQ_NEXT(dstart, next);
 652         } else {
 653                 dev = TAILQ_FIRST(&rte_dpaa_bus.device_list);
 654         }
 655
 656         while (dev != NULL) {
 657                 if (cmp(&dev->device, data) == 0) {
 658                         DPAA_BUS_DEBUG("Found dev=(%s)\n", dev->device.name);
 659                         return &dev->device;
 660                 }
 661                 dev = TAILQ_NEXT(dev, next);
 662         }
 663
 664         DPAA_BUS_DEBUG("Unable to find any device\n");
 665         return NULL;
 666 }
 667
 668 /*
 669  * Get iommu class of DPAA2 devices on the bus.
 670  */
 671 static enum rte_iova_mode
 672 rte_dpaa_get_iommu_class(void)
 673 {
 674         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
 675             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
 676                 return RTE_IOVA_DC;
 677         }
 678         return RTE_IOVA_PA;
 679 }
 680
 681 static int
 682 dpaa_bus_plug(struct rte_device *dev __rte_unused)
 683 {
 684         /* No operation is performed while plugging the device */
 685         return 0;
 686 }
 687
 688 static int
 689 dpaa_bus_unplug(struct rte_device *dev __rte_unused)
 690 {
 691         /* No operation is performed while unplugging the device */
 692         return 0;
 693 }
 694
 695 static void *
 696 dpaa_bus_dev_iterate(const void *start, const char *str,
 697                      const struct rte_dev_iterator *it __rte_unused)
 698 {
 699         const struct rte_dpaa_device *dstart;
 700         struct rte_dpaa_device *dev;
 701         char *dup, *dev_name = NULL;
 702
 703         /* Expectation is that device would be name=device_name */
 704         if (strncmp(str, "name=", 5) != 0) {
 705                 DPAA_BUS_DEBUG("Invalid device string (%s)\n", str);
 706                 return NULL;
 707         }
 708
 709         /* Now that name=device_name format is available, split */
 710         dup = strdup(str);
 711         dev_name = dup + strlen("name=");
 712
 713         if (start != NULL) {
 714                 dstart = RTE_DEV_TO_DPAA_CONST(start);
 715                 dev = TAILQ_NEXT(dstart, next);
 716         } else {
 717                 dev = TAILQ_FIRST(&rte_dpaa_bus.device_list);
 718         }
 719
 720         while (dev != NULL) {
 721                 if (strcmp(dev->device.name, dev_name) == 0) {
 722                         free(dup);
 723                         return &dev->device;
 724                 }
 725                 dev = TAILQ_NEXT(dev, next);
 726         }
 727
 728         free(dup);
 729         return NULL;
 730 }
 731
 732 static struct rte_dpaa_bus rte_dpaa_bus = {
 733         .bus = {
 734                 .scan = rte_dpaa_bus_scan,
 735                 .probe = rte_dpaa_bus_probe,
 736                 .parse = rte_dpaa_bus_parse,
 737                 .find_device = rte_dpaa_find_device,
 738                 .get_iommu_class = rte_dpaa_get_iommu_class,
 739                 .plug = dpaa_bus_plug,
 740                 .unplug = dpaa_bus_unplug,
 741                 .dev_iterate = dpaa_bus_dev_iterate,
 742         },
 743         .device_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.device_list),
 744         .driver_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.driver_list),
 745         .device_count = 0,
 746 };
 747
 748 RTE_REGISTER_BUS(FSL_DPAA_BUS_NAME, rte_dpaa_bus.bus);
 749
 750 RTE_INIT(dpaa_init_log)
 751 {
 752         dpaa_logtype_bus = rte_log_register("bus.dpaa");
 753         if (dpaa_logtype_bus >= 0)
 754                 rte_log_set_level(dpaa_logtype_bus, RTE_LOG_NOTICE);
 755
 756         dpaa_logtype_mempool = rte_log_register("mempool.dpaa");
 757         if (dpaa_logtype_mempool >= 0)
 758                 rte_log_set_level(dpaa_logtype_mempool, RTE_LOG_NOTICE);
 759
 760         dpaa_logtype_pmd = rte_log_register("pmd.net.dpaa");
 761         if (dpaa_logtype_pmd >= 0)
 762                 rte_log_set_level(dpaa_logtype_pmd, RTE_LOG_NOTICE);
 763
 764         dpaa_logtype_eventdev = rte_log_register("pmd.event.dpaa");
 765         if (dpaa_logtype_eventdev >= 0)
 766                 rte_log_set_level(dpaa_logtype_eventdev, RTE_LOG_NOTICE);
 767 }