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