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_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 <rte_dpaa_bus.h>
  36 #include <rte_dpaa_logs.h>
  37
  38 #include <fsl_usd.h>
  39 #include <fsl_qman.h>
  40 #include <fsl_bman.h>
  41 #include <of.h>
  42 #include <netcfg.h>
  43
  44 int dpaa_logtype_bus;
  45 int dpaa_logtype_mempool;
  46 int dpaa_logtype_pmd;
  47 int dpaa_logtype_eventdev;
  48
  49 struct rte_dpaa_bus rte_dpaa_bus;
  50 struct netcfg_info *dpaa_netcfg;
  51
  52 /* define a variable to hold the portal_key, once created.*/
  53 static pthread_key_t dpaa_portal_key;
  54
  55 unsigned int dpaa_svr_family;
  56
  57 #define FSL_DPAA_BUS_NAME       dpaa_bus
  58
  59 RTE_DEFINE_PER_LCORE(bool, dpaa_io);
  60 RTE_DEFINE_PER_LCORE(struct dpaa_portal_dqrr, held_bufs);
  61
  62 static int
  63 compare_dpaa_devices(struct rte_dpaa_device *dev1,
  64                      struct rte_dpaa_device *dev2)
  65 {
  66         int comp = 0;
  67
  68         /* Segragating ETH from SEC devices */
  69         if (dev1->device_type > dev2->device_type)
  70                 comp = 1;
  71         else if (dev1->device_type < dev2->device_type)
  72                 comp = -1;
  73         else
  74                 comp = 0;
  75
  76         if ((comp != 0) || (dev1->device_type != FSL_DPAA_ETH))
  77                 return comp;
  78
  79         if (dev1->id.fman_id > dev2->id.fman_id) {
  80                 comp = 1;
  81         } else if (dev1->id.fman_id < dev2->id.fman_id) {
  82                 comp = -1;
  83         } else {
  84                 /* FMAN ids match, check for mac_id */
  85                 if (dev1->id.mac_id > dev2->id.mac_id)
  86                         comp = 1;
  87                 else if (dev1->id.mac_id < dev2->id.mac_id)
  88                         comp = -1;
  89                 else
  90                         comp = 0;
  91         }
  92
  93         return comp;
  94 }
  95
  96 static inline void
  97 dpaa_add_to_device_list(struct rte_dpaa_device *newdev)
  98 {
  99         int comp, inserted = 0;
 100         struct rte_dpaa_device *dev = NULL;
 101         struct rte_dpaa_device *tdev = NULL;
 102
 103         TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
 104                 comp = compare_dpaa_devices(newdev, dev);
 105                 if (comp < 0) {
 106                         TAILQ_INSERT_BEFORE(dev, newdev, next);
 107                         inserted = 1;
 108                         break;
 109                 }
 110         }
 111
 112         if (!inserted)
 113                 TAILQ_INSERT_TAIL(&rte_dpaa_bus.device_list, newdev, next);
 114 }
 115
 116 /*
 117  * Reads the SEC device from DTS
 118  * Returns -1 if SEC devices not available, 0 otherwise
 119  */
 120 static inline int
 121 dpaa_sec_available(void)
 122 {
 123         const struct device_node *caam_node;
 124
 125         for_each_compatible_node(caam_node, NULL, "fsl,sec-v4.0") {
 126                 return 0;
 127         }
 128
 129         return -1;
 130 }
 131
 132 static void dpaa_clean_device_list(void);
 133
 134 static struct rte_devargs *
 135 dpaa_devargs_lookup(struct rte_dpaa_device *dev)
 136 {
 137         struct rte_devargs *devargs;
 138         char dev_name[32];
 139
 140         RTE_EAL_DEVARGS_FOREACH("dpaa_bus", devargs) {
 141                 devargs->bus->parse(devargs->name, &dev_name);
 142                 if (strcmp(dev_name, dev->device.name) == 0) {
 143                         DPAA_BUS_INFO("**Devargs matched %s", dev_name);
 144                         return devargs;
 145                 }
 146         }
 147         return NULL;
 148 }
 149
 150 static int
 151 dpaa_create_device_list(void)
 152 {
 153         int i;
 154         int ret;
 155         struct rte_dpaa_device *dev;
 156         struct fm_eth_port_cfg *cfg;
 157         struct fman_if *fman_intf;
 158
 159         /* Creating Ethernet Devices */
 160         for (i = 0; i < dpaa_netcfg->num_ethports; i++) {
 161                 dev = calloc(1, sizeof(struct rte_dpaa_device));
 162                 if (!dev) {
 163                         DPAA_BUS_LOG(ERR, "Failed to allocate ETH devices");
 164                         ret = -ENOMEM;
 165                         goto cleanup;
 166                 }
 167
 168                 cfg = &dpaa_netcfg->port_cfg[i];
 169                 fman_intf = cfg->fman_if;
 170
 171                 /* Device identifiers */
 172                 dev->id.fman_id = fman_intf->fman_idx + 1;
 173                 dev->id.mac_id = fman_intf->mac_idx;
 174                 dev->device_type = FSL_DPAA_ETH;
 175                 dev->id.dev_id = i;
 176
 177                 /* Create device name */
 178                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 179                 sprintf(dev->name, "fm%d-mac%d", (fman_intf->fman_idx + 1),
 180                         fman_intf->mac_idx);
 181                 DPAA_BUS_LOG(INFO, "%s netdev added", dev->name);
 182                 dev->device.name = dev->name;
 183                 dev->device.devargs = dpaa_devargs_lookup(dev);
 184
 185                 dpaa_add_to_device_list(dev);
 186         }
 187
 188         rte_dpaa_bus.device_count = i;
 189
 190         /* Unlike case of ETH, RTE_LIBRTE_DPAA_MAX_CRYPTODEV SEC devices are
 191          * constantly created only if "sec" property is found in the device
 192          * tree. Logically there is no limit for number of devices (QI
 193          * interfaces) that can be created.
 194          */
 195
 196         if (dpaa_sec_available()) {
 197                 DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
 198                 return 0;
 199         }
 200
 201         /* Creating SEC Devices */
 202         for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
 203                 dev = calloc(1, sizeof(struct rte_dpaa_device));
 204                 if (!dev) {
 205                         DPAA_BUS_LOG(ERR, "Failed to allocate SEC devices");
 206                         ret = -1;
 207                         goto cleanup;
 208                 }
 209
 210                 dev->device_type = FSL_DPAA_CRYPTO;
 211                 dev->id.dev_id = rte_dpaa_bus.device_count + i;
 212
 213                 /* Even though RTE_CRYPTODEV_NAME_MAX_LEN is valid length of
 214                  * crypto PMD, using RTE_ETH_NAME_MAX_LEN as that is the size
 215                  * allocated for dev->name/
 216                  */
 217                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 218                 sprintf(dev->name, "dpaa-sec%d", i);
 219                 DPAA_BUS_LOG(INFO, "%s cryptodev added", dev->name);
 220                 dev->device.name = dev->name;
 221                 dev->device.devargs = dpaa_devargs_lookup(dev);
 222
 223                 dpaa_add_to_device_list(dev);
 224         }
 225
 226         rte_dpaa_bus.device_count += i;
 227
 228         return 0;
 229
 230 cleanup:
 231         dpaa_clean_device_list();
 232         return ret;
 233 }
 234
 235 static void
 236 dpaa_clean_device_list(void)
 237 {
 238         struct rte_dpaa_device *dev = NULL;
 239         struct rte_dpaa_device *tdev = NULL;
 240
 241         TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
 242                 TAILQ_REMOVE(&rte_dpaa_bus.device_list, dev, next);
 243                 free(dev);
 244                 dev = NULL;
 245         }
 246 }
 247
 248 int rte_dpaa_portal_init(void *arg)
 249 {
 250         cpu_set_t cpuset;
 251         pthread_t id;
 252         uint32_t cpu = rte_lcore_id();
 253         int ret;
 254         struct dpaa_portal *dpaa_io_portal;
 255
 256         BUS_INIT_FUNC_TRACE();
 257
 258         if ((size_t)arg == 1 || cpu == LCORE_ID_ANY)
 259                 cpu = rte_get_master_lcore();
 260         /* if the core id is not supported */
 261         else
 262                 if (cpu >= RTE_MAX_LCORE)
 263                         return -1;
 264
 265         /* Set CPU affinity for this thread */
 266         CPU_ZERO(&cpuset);
 267         CPU_SET(cpu, &cpuset);
 268         id = pthread_self();
 269         ret = pthread_setaffinity_np(id, sizeof(cpu_set_t), &cpuset);
 270         if (ret) {
 271                 DPAA_BUS_LOG(ERR, "pthread_setaffinity_np failed on "
 272                         "core :%d with ret: %d", cpu, ret);
 273                 return ret;
 274         }
 275
 276         /* Initialise bman thread portals */
 277         ret = bman_thread_init();
 278         if (ret) {
 279                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on "
 280                         "core %d with ret: %d", cpu, ret);
 281                 return ret;
 282         }
 283
 284         DPAA_BUS_LOG(DEBUG, "BMAN thread initialized");
 285
 286         /* Initialise qman thread portals */
 287         ret = qman_thread_init();
 288         if (ret) {
 289                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on "
 290                         "core %d with ret: %d", cpu, ret);
 291                 bman_thread_finish();
 292                 return ret;
 293         }
 294
 295         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
 296
 297         dpaa_io_portal = rte_malloc(NULL, sizeof(struct dpaa_portal),
 298                                     RTE_CACHE_LINE_SIZE);
 299         if (!dpaa_io_portal) {
 300                 DPAA_BUS_LOG(ERR, "Unable to allocate memory");
 301                 bman_thread_finish();
 302                 qman_thread_finish();
 303                 return -ENOMEM;
 304         }
 305
 306         dpaa_io_portal->qman_idx = qman_get_portal_index();
 307         dpaa_io_portal->bman_idx = bman_get_portal_index();
 308         dpaa_io_portal->tid = syscall(SYS_gettid);
 309
 310         ret = pthread_setspecific(dpaa_portal_key, (void *)dpaa_io_portal);
 311         if (ret) {
 312                 DPAA_BUS_LOG(ERR, "pthread_setspecific failed on "
 313                             "core %d with ret: %d", cpu, ret);
 314                 dpaa_portal_finish(NULL);
 315
 316                 return ret;
 317         }
 318
 319         RTE_PER_LCORE(dpaa_io) = true;
 320
 321         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
 322
 323         return 0;
 324 }
 325
 326 int
 327 rte_dpaa_portal_fq_init(void *arg, struct qman_fq *fq)
 328 {
 329         /* Affine above created portal with channel*/
 330         u32 sdqcr;
 331         struct qman_portal *qp;
 332         int ret;
 333
 334         if (unlikely(!RTE_PER_LCORE(dpaa_io))) {
 335                 ret = rte_dpaa_portal_init(arg);
 336                 if (ret < 0) {
 337                         DPAA_BUS_LOG(ERR, "portal initialization failure");
 338                         return ret;
 339                 }
 340         }
 341
 342         /* Initialise qman specific portals */
 343         qp = fsl_qman_portal_create();
 344         if (!qp) {
 345                 DPAA_BUS_LOG(ERR, "Unable to alloc fq portal");
 346                 return -1;
 347         }
 348         fq->qp = qp;
 349         sdqcr = QM_SDQCR_CHANNELS_POOL_CONV(fq->ch_id);
 350         qman_static_dequeue_add(sdqcr, qp);
 351
 352         return 0;
 353 }
 354
 355 int rte_dpaa_portal_fq_close(struct qman_fq *fq)
 356 {
 357         return fsl_qman_portal_destroy(fq->qp);
 358 }
 359
 360 void
 361 dpaa_portal_finish(void *arg)
 362 {
 363         struct dpaa_portal *dpaa_io_portal = (struct dpaa_portal *)arg;
 364
 365         if (!dpaa_io_portal) {
 366                 DPAA_BUS_LOG(DEBUG, "Portal already cleaned");
 367                 return;
 368         }
 369
 370         bman_thread_finish();
 371         qman_thread_finish();
 372
 373         pthread_setspecific(dpaa_portal_key, NULL);
 374
 375         rte_free(dpaa_io_portal);
 376         dpaa_io_portal = NULL;
 377
 378         RTE_PER_LCORE(dpaa_io) = false;
 379 }
 380
 381 static int
 382 rte_dpaa_bus_parse(const char *name, void *out_name)
 383 {
 384         int i, j;
 385         int max_fman = 2, max_macs = 16;
 386         char *sep = strchr(name, ':');
 387
 388         if (strncmp(name, RTE_STR(FSL_DPAA_BUS_NAME),
 389                 strlen(RTE_STR(FSL_DPAA_BUS_NAME)))) {
 390                 return -EINVAL;
 391         }
 392
 393         if (!sep) {
 394                 DPAA_BUS_ERR("Incorrect device name observed");
 395                 return -EINVAL;
 396         }
 397
 398         sep = (char *) (sep + 1);
 399
 400         for (i = 0; i < max_fman; i++) {
 401                 for (j = 0; j < max_macs; j++) {
 402                         char fm_name[16];
 403                         snprintf(fm_name, 16, "fm%d-mac%d", i, j);
 404                         if (strcmp(fm_name, sep) == 0) {
 405                                 if (out_name)
 406                                         strcpy(out_name, sep);
 407                                 return 0;
 408                         }
 409                 }
 410         }
 411
 412         for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
 413                 char sec_name[16];
 414
 415                 snprintf(sec_name, 16, "dpaa-sec%d", i);
 416                 if (strcmp(sec_name, sep) == 0) {
 417                         if (out_name)
 418                                 strcpy(out_name, sep);
 419                         return 0;
 420                 }
 421         }
 422
 423         return -EINVAL;
 424 }
 425
 426 #define DPAA_DEV_PATH1 "/sys/devices/platform/soc/soc:fsl,dpaa"
 427 #define DPAA_DEV_PATH2 "/sys/devices/platform/fsl,dpaa"
 428
 429 static int
 430 rte_dpaa_bus_scan(void)
 431 {
 432         int ret;
 433
 434         BUS_INIT_FUNC_TRACE();
 435
 436         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
 437             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
 438                 RTE_LOG(DEBUG, EAL, "DPAA Bus not present. Skipping.\n");
 439                 return 0;
 440         }
 441
 442         /* Load the device-tree driver */
 443         ret = of_init();
 444         if (ret) {
 445                 DPAA_BUS_LOG(ERR, "of_init failed with ret: %d", ret);
 446                 return -1;
 447         }
 448
 449         /* Get the interface configurations from device-tree */
 450         dpaa_netcfg = netcfg_acquire();
 451         if (!dpaa_netcfg) {
 452                 DPAA_BUS_LOG(ERR, "netcfg_acquire failed");
 453                 return -EINVAL;
 454         }
 455
 456         RTE_LOG(NOTICE, EAL, "DPAA Bus Detected\n");
 457
 458         if (!dpaa_netcfg->num_ethports) {
 459                 DPAA_BUS_LOG(INFO, "no network interfaces available");
 460                 /* This is not an error */
 461                 return 0;
 462         }
 463
 464 #ifdef RTE_LIBRTE_DPAA_DEBUG_DRIVER
 465         dump_netcfg(dpaa_netcfg);
 466 #endif
 467
 468         DPAA_BUS_LOG(DEBUG, "Number of ethernet devices = %d",
 469                      dpaa_netcfg->num_ethports);
 470         ret = dpaa_create_device_list();
 471         if (ret) {
 472                 DPAA_BUS_LOG(ERR, "Unable to create device list. (%d)", ret);
 473                 return ret;
 474         }
 475
 476         /* create the key, supplying a function that'll be invoked
 477          * when a portal affined thread will be deleted.
 478          */
 479         ret = pthread_key_create(&dpaa_portal_key, dpaa_portal_finish);
 480         if (ret) {
 481                 DPAA_BUS_LOG(DEBUG, "Unable to create pthread key. (%d)", ret);
 482                 dpaa_clean_device_list();
 483                 return ret;
 484         }
 485
 486         return 0;
 487 }
 488
 489 /* register a dpaa bus based dpaa driver */
 490 void
 491 rte_dpaa_driver_register(struct rte_dpaa_driver *driver)
 492 {
 493         RTE_VERIFY(driver);
 494
 495         BUS_INIT_FUNC_TRACE();
 496
 497         TAILQ_INSERT_TAIL(&rte_dpaa_bus.driver_list, driver, next);
 498         /* Update Bus references */
 499         driver->dpaa_bus = &rte_dpaa_bus;
 500 }
 501
 502 /* un-register a dpaa bus based dpaa driver */
 503 void
 504 rte_dpaa_driver_unregister(struct rte_dpaa_driver *driver)
 505 {
 506         struct rte_dpaa_bus *dpaa_bus;
 507
 508         BUS_INIT_FUNC_TRACE();
 509
 510         dpaa_bus = driver->dpaa_bus;
 511
 512         TAILQ_REMOVE(&dpaa_bus->driver_list, driver, next);
 513         /* Update Bus references */
 514         driver->dpaa_bus = NULL;
 515 }
 516
 517 static int
 518 rte_dpaa_device_match(struct rte_dpaa_driver *drv,
 519                       struct rte_dpaa_device *dev)
 520 {
 521         if (!drv || !dev) {
 522                 DPAA_BUS_DEBUG("Invalid drv or dev received.");
 523                 return -1;
 524         }
 525
 526         if (drv->drv_type == dev->device_type)
 527                 return 0;
 528
 529         return -1;
 530 }
 531
 532 static int
 533 rte_dpaa_bus_probe(void)
 534 {
 535         int ret = -1;
 536         struct rte_dpaa_device *dev;
 537         struct rte_dpaa_driver *drv;
 538         FILE *svr_file = NULL;
 539         unsigned int svr_ver;
 540         int probe_all = rte_dpaa_bus.bus.conf.scan_mode != RTE_BUS_SCAN_WHITELIST;
 541
 542         svr_file = fopen(DPAA_SOC_ID_FILE, "r");
 543         if (svr_file) {
 544                 if (fscanf(svr_file, "svr:%x", &svr_ver) > 0)
 545                         dpaa_svr_family = svr_ver & SVR_MASK;
 546                 fclose(svr_file);
 547         }
 548
 549         /* For each registered driver, and device, call the driver->probe */
 550         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
 551                 TAILQ_FOREACH(drv, &rte_dpaa_bus.driver_list, next) {
 552                         ret = rte_dpaa_device_match(drv, dev);
 553                         if (ret)
 554                                 continue;
 555
 556                         if (!drv->probe ||
 557                             (dev->device.devargs &&
 558                             dev->device.devargs->policy == RTE_DEV_BLACKLISTED))
 559                                 continue;
 560
 561                         if (probe_all ||
 562                             (dev->device.devargs &&
 563                             dev->device.devargs->policy ==
 564                             RTE_DEV_WHITELISTED)) {
 565                                 ret = drv->probe(drv, dev);
 566                                 if (ret)
 567                                         DPAA_BUS_ERR("Unable to probe.\n");
 568                         }
 569                         break;
 570                 }
 571         }
 572
 573         /* Register DPAA mempool ops only if any DPAA device has
 574          * been detected.
 575          */
 576         if (!TAILQ_EMPTY(&rte_dpaa_bus.device_list))
 577                 rte_mbuf_set_platform_mempool_ops(DPAA_MEMPOOL_OPS_NAME);
 578
 579         return 0;
 580 }
 581
 582 static struct rte_device *
 583 rte_dpaa_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
 584                      const void *data)
 585 {
 586         struct rte_dpaa_device *dev;
 587
 588         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
 589                 if (start && &dev->device == start) {
 590                         start = NULL;  /* starting point found */
 591                         continue;
 592                 }
 593
 594                 if (cmp(&dev->device, data) == 0)
 595                         return &dev->device;
 596         }
 597
 598         return NULL;
 599 }
 600
 601 /*
 602  * Get iommu class of DPAA2 devices on the bus.
 603  */
 604 static enum rte_iova_mode
 605 rte_dpaa_get_iommu_class(void)
 606 {
 607         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
 608             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
 609                 return RTE_IOVA_DC;
 610         }
 611         return RTE_IOVA_PA;
 612 }
 613
 614 struct rte_dpaa_bus rte_dpaa_bus = {
 615         .bus = {
 616                 .scan = rte_dpaa_bus_scan,
 617                 .probe = rte_dpaa_bus_probe,
 618                 .parse = rte_dpaa_bus_parse,
 619                 .find_device = rte_dpaa_find_device,
 620                 .get_iommu_class = rte_dpaa_get_iommu_class,
 621         },
 622         .device_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.device_list),
 623         .driver_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.driver_list),
 624         .device_count = 0,
 625 };
 626
 627 RTE_REGISTER_BUS(FSL_DPAA_BUS_NAME, rte_dpaa_bus.bus);
 628
 629 RTE_INIT(dpaa_init_log)
 630 {
 631         dpaa_logtype_bus = rte_log_register("bus.dpaa");
 632         if (dpaa_logtype_bus >= 0)
 633                 rte_log_set_level(dpaa_logtype_bus, RTE_LOG_NOTICE);
 634
 635         dpaa_logtype_mempool = rte_log_register("mempool.dpaa");
 636         if (dpaa_logtype_mempool >= 0)
 637                 rte_log_set_level(dpaa_logtype_mempool, RTE_LOG_NOTICE);
 638
 639         dpaa_logtype_pmd = rte_log_register("pmd.net.dpaa");
 640         if (dpaa_logtype_pmd >= 0)
 641                 rte_log_set_level(dpaa_logtype_pmd, RTE_LOG_NOTICE);
 642
 643         dpaa_logtype_eventdev = rte_log_register("pmd.event.dpaa");
 644         if (dpaa_logtype_eventdev >= 0)
 645                 rte_log_set_level(dpaa_logtype_eventdev, RTE_LOG_NOTICE);
 646 }