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                 dev->device.bus = &rte_dpaa_bus.bus;
 169
 170                 cfg = &dpaa_netcfg->port_cfg[i];
 171                 fman_intf = cfg->fman_if;
 172
 173                 /* Device identifiers */
 174                 dev->id.fman_id = fman_intf->fman_idx + 1;
 175                 dev->id.mac_id = fman_intf->mac_idx;
 176                 dev->device_type = FSL_DPAA_ETH;
 177                 dev->id.dev_id = i;
 178
 179                 /* Create device name */
 180                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 181                 sprintf(dev->name, "fm%d-mac%d", (fman_intf->fman_idx + 1),
 182                         fman_intf->mac_idx);
 183                 DPAA_BUS_LOG(INFO, "%s netdev added", dev->name);
 184                 dev->device.name = dev->name;
 185                 dev->device.devargs = dpaa_devargs_lookup(dev);
 186
 187                 dpaa_add_to_device_list(dev);
 188         }
 189
 190         rte_dpaa_bus.device_count = i;
 191
 192         /* Unlike case of ETH, RTE_LIBRTE_DPAA_MAX_CRYPTODEV SEC devices are
 193          * constantly created only if "sec" property is found in the device
 194          * tree. Logically there is no limit for number of devices (QI
 195          * interfaces) that can be created.
 196          */
 197
 198         if (dpaa_sec_available()) {
 199                 DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
 200                 return 0;
 201         }
 202
 203         /* Creating SEC Devices */
 204         for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
 205                 dev = calloc(1, sizeof(struct rte_dpaa_device));
 206                 if (!dev) {
 207                         DPAA_BUS_LOG(ERR, "Failed to allocate SEC devices");
 208                         ret = -1;
 209                         goto cleanup;
 210                 }
 211
 212                 dev->device_type = FSL_DPAA_CRYPTO;
 213                 dev->id.dev_id = rte_dpaa_bus.device_count + i;
 214
 215                 /* Even though RTE_CRYPTODEV_NAME_MAX_LEN is valid length of
 216                  * crypto PMD, using RTE_ETH_NAME_MAX_LEN as that is the size
 217                  * allocated for dev->name/
 218                  */
 219                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 220                 sprintf(dev->name, "dpaa-sec%d", i);
 221                 DPAA_BUS_LOG(INFO, "%s cryptodev added", dev->name);
 222                 dev->device.name = dev->name;
 223                 dev->device.devargs = dpaa_devargs_lookup(dev);
 224
 225                 dpaa_add_to_device_list(dev);
 226         }
 227
 228         rte_dpaa_bus.device_count += i;
 229
 230         return 0;
 231
 232 cleanup:
 233         dpaa_clean_device_list();
 234         return ret;
 235 }
 236
 237 static void
 238 dpaa_clean_device_list(void)
 239 {
 240         struct rte_dpaa_device *dev = NULL;
 241         struct rte_dpaa_device *tdev = NULL;
 242
 243         TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
 244                 TAILQ_REMOVE(&rte_dpaa_bus.device_list, dev, next);
 245                 free(dev);
 246                 dev = NULL;
 247         }
 248 }
 249
 250 int rte_dpaa_portal_init(void *arg)
 251 {
 252         cpu_set_t cpuset;
 253         pthread_t id;
 254         uint32_t cpu = rte_lcore_id();
 255         int ret;
 256         struct dpaa_portal *dpaa_io_portal;
 257
 258         BUS_INIT_FUNC_TRACE();
 259
 260         if ((size_t)arg == 1 || cpu == LCORE_ID_ANY)
 261                 cpu = rte_get_master_lcore();
 262         /* if the core id is not supported */
 263         else
 264                 if (cpu >= RTE_MAX_LCORE)
 265                         return -1;
 266
 267         /* Set CPU affinity for this thread */
 268         CPU_ZERO(&cpuset);
 269         CPU_SET(cpu, &cpuset);
 270         id = pthread_self();
 271         ret = pthread_setaffinity_np(id, sizeof(cpu_set_t), &cpuset);
 272         if (ret) {
 273                 DPAA_BUS_LOG(ERR, "pthread_setaffinity_np failed on "
 274                         "core :%d with ret: %d", cpu, ret);
 275                 return ret;
 276         }
 277
 278         /* Initialise bman thread portals */
 279         ret = bman_thread_init();
 280         if (ret) {
 281                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on "
 282                         "core %d with ret: %d", cpu, ret);
 283                 return ret;
 284         }
 285
 286         DPAA_BUS_LOG(DEBUG, "BMAN thread initialized");
 287
 288         /* Initialise qman thread portals */
 289         ret = qman_thread_init();
 290         if (ret) {
 291                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on "
 292                         "core %d with ret: %d", cpu, ret);
 293                 bman_thread_finish();
 294                 return ret;
 295         }
 296
 297         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
 298
 299         dpaa_io_portal = rte_malloc(NULL, sizeof(struct dpaa_portal),
 300                                     RTE_CACHE_LINE_SIZE);
 301         if (!dpaa_io_portal) {
 302                 DPAA_BUS_LOG(ERR, "Unable to allocate memory");
 303                 bman_thread_finish();
 304                 qman_thread_finish();
 305                 return -ENOMEM;
 306         }
 307
 308         dpaa_io_portal->qman_idx = qman_get_portal_index();
 309         dpaa_io_portal->bman_idx = bman_get_portal_index();
 310         dpaa_io_portal->tid = syscall(SYS_gettid);
 311
 312         ret = pthread_setspecific(dpaa_portal_key, (void *)dpaa_io_portal);
 313         if (ret) {
 314                 DPAA_BUS_LOG(ERR, "pthread_setspecific failed on "
 315                             "core %d with ret: %d", cpu, ret);
 316                 dpaa_portal_finish(NULL);
 317
 318                 return ret;
 319         }
 320
 321         RTE_PER_LCORE(dpaa_io) = true;
 322
 323         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
 324
 325         return 0;
 326 }
 327
 328 int
 329 rte_dpaa_portal_fq_init(void *arg, struct qman_fq *fq)
 330 {
 331         /* Affine above created portal with channel*/
 332         u32 sdqcr;
 333         struct qman_portal *qp;
 334         int ret;
 335
 336         if (unlikely(!RTE_PER_LCORE(dpaa_io))) {
 337                 ret = rte_dpaa_portal_init(arg);
 338                 if (ret < 0) {
 339                         DPAA_BUS_LOG(ERR, "portal initialization failure");
 340                         return ret;
 341                 }
 342         }
 343
 344         /* Initialise qman specific portals */
 345         qp = fsl_qman_portal_create();
 346         if (!qp) {
 347                 DPAA_BUS_LOG(ERR, "Unable to alloc fq portal");
 348                 return -1;
 349         }
 350         fq->qp = qp;
 351         sdqcr = QM_SDQCR_CHANNELS_POOL_CONV(fq->ch_id);
 352         qman_static_dequeue_add(sdqcr, qp);
 353
 354         return 0;
 355 }
 356
 357 int rte_dpaa_portal_fq_close(struct qman_fq *fq)
 358 {
 359         return fsl_qman_portal_destroy(fq->qp);
 360 }
 361
 362 void
 363 dpaa_portal_finish(void *arg)
 364 {
 365         struct dpaa_portal *dpaa_io_portal = (struct dpaa_portal *)arg;
 366
 367         if (!dpaa_io_portal) {
 368                 DPAA_BUS_LOG(DEBUG, "Portal already cleaned");
 369                 return;
 370         }
 371
 372         bman_thread_finish();
 373         qman_thread_finish();
 374
 375         pthread_setspecific(dpaa_portal_key, NULL);
 376
 377         rte_free(dpaa_io_portal);
 378         dpaa_io_portal = NULL;
 379
 380         RTE_PER_LCORE(dpaa_io) = false;
 381 }
 382
 383 static int
 384 rte_dpaa_bus_parse(const char *name, void *out_name)
 385 {
 386         int i, j;
 387         int max_fman = 2, max_macs = 16;
 388         char *sep = strchr(name, ':');
 389
 390         if (strncmp(name, RTE_STR(FSL_DPAA_BUS_NAME),
 391                 strlen(RTE_STR(FSL_DPAA_BUS_NAME)))) {
 392                 return -EINVAL;
 393         }
 394
 395         if (!sep) {
 396                 DPAA_BUS_ERR("Incorrect device name observed");
 397                 return -EINVAL;
 398         }
 399
 400         sep = (char *) (sep + 1);
 401
 402         for (i = 0; i < max_fman; i++) {
 403                 for (j = 0; j < max_macs; j++) {
 404                         char fm_name[16];
 405                         snprintf(fm_name, 16, "fm%d-mac%d", i, j);
 406                         if (strcmp(fm_name, sep) == 0) {
 407                                 if (out_name)
 408                                         strcpy(out_name, sep);
 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);
 418                 if (strcmp(sec_name, sep) == 0) {
 419                         if (out_name)
 420                                 strcpy(out_name, sep);
 421                         return 0;
 422                 }
 423         }
 424
 425         return -EINVAL;
 426 }
 427
 428 #define DPAA_DEV_PATH1 "/sys/devices/platform/soc/soc:fsl,dpaa"
 429 #define DPAA_DEV_PATH2 "/sys/devices/platform/fsl,dpaa"
 430
 431 static int
 432 rte_dpaa_bus_scan(void)
 433 {
 434         int ret;
 435
 436         BUS_INIT_FUNC_TRACE();
 437
 438         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
 439             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
 440                 RTE_LOG(DEBUG, EAL, "DPAA Bus not present. Skipping.\n");
 441                 return 0;
 442         }
 443
 444         /* Load the device-tree driver */
 445         ret = of_init();
 446         if (ret) {
 447                 DPAA_BUS_LOG(ERR, "of_init failed with ret: %d", ret);
 448                 return -1;
 449         }
 450
 451         /* Get the interface configurations from device-tree */
 452         dpaa_netcfg = netcfg_acquire();
 453         if (!dpaa_netcfg) {
 454                 DPAA_BUS_LOG(ERR, "netcfg_acquire failed");
 455                 return -EINVAL;
 456         }
 457
 458         RTE_LOG(NOTICE, EAL, "DPAA Bus Detected\n");
 459
 460         if (!dpaa_netcfg->num_ethports) {
 461                 DPAA_BUS_LOG(INFO, "no network interfaces available");
 462                 /* This is not an error */
 463                 return 0;
 464         }
 465
 466 #ifdef RTE_LIBRTE_DPAA_DEBUG_DRIVER
 467         dump_netcfg(dpaa_netcfg);
 468 #endif
 469
 470         DPAA_BUS_LOG(DEBUG, "Number of ethernet devices = %d",
 471                      dpaa_netcfg->num_ethports);
 472         ret = dpaa_create_device_list();
 473         if (ret) {
 474                 DPAA_BUS_LOG(ERR, "Unable to create device list. (%d)", ret);
 475                 return ret;
 476         }
 477
 478         /* create the key, supplying a function that'll be invoked
 479          * when a portal affined thread will be deleted.
 480          */
 481         ret = pthread_key_create(&dpaa_portal_key, dpaa_portal_finish);
 482         if (ret) {
 483                 DPAA_BUS_LOG(DEBUG, "Unable to create pthread key. (%d)", ret);
 484                 dpaa_clean_device_list();
 485                 return ret;
 486         }
 487
 488         return 0;
 489 }
 490
 491 /* register a dpaa bus based dpaa driver */
 492 void
 493 rte_dpaa_driver_register(struct rte_dpaa_driver *driver)
 494 {
 495         RTE_VERIFY(driver);
 496
 497         BUS_INIT_FUNC_TRACE();
 498
 499         TAILQ_INSERT_TAIL(&rte_dpaa_bus.driver_list, driver, next);
 500         /* Update Bus references */
 501         driver->dpaa_bus = &rte_dpaa_bus;
 502 }
 503
 504 /* un-register a dpaa bus based dpaa driver */
 505 void
 506 rte_dpaa_driver_unregister(struct rte_dpaa_driver *driver)
 507 {
 508         struct rte_dpaa_bus *dpaa_bus;
 509
 510         BUS_INIT_FUNC_TRACE();
 511
 512         dpaa_bus = driver->dpaa_bus;
 513
 514         TAILQ_REMOVE(&dpaa_bus->driver_list, driver, next);
 515         /* Update Bus references */
 516         driver->dpaa_bus = NULL;
 517 }
 518
 519 static int
 520 rte_dpaa_device_match(struct rte_dpaa_driver *drv,
 521                       struct rte_dpaa_device *dev)
 522 {
 523         if (!drv || !dev) {
 524                 DPAA_BUS_DEBUG("Invalid drv or dev received.");
 525                 return -1;
 526         }
 527
 528         if (drv->drv_type == dev->device_type)
 529                 return 0;
 530
 531         return -1;
 532 }
 533
 534 static int
 535 rte_dpaa_bus_probe(void)
 536 {
 537         int ret = -1;
 538         struct rte_dpaa_device *dev;
 539         struct rte_dpaa_driver *drv;
 540         FILE *svr_file = NULL;
 541         unsigned int svr_ver;
 542         int probe_all = rte_dpaa_bus.bus.conf.scan_mode != RTE_BUS_SCAN_WHITELIST;
 543
 544         svr_file = fopen(DPAA_SOC_ID_FILE, "r");
 545         if (svr_file) {
 546                 if (fscanf(svr_file, "svr:%x", &svr_ver) > 0)
 547                         dpaa_svr_family = svr_ver & SVR_MASK;
 548                 fclose(svr_file);
 549         }
 550
 551         /* For each registered driver, and device, call the driver->probe */
 552         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
 553                 TAILQ_FOREACH(drv, &rte_dpaa_bus.driver_list, next) {
 554                         ret = rte_dpaa_device_match(drv, dev);
 555                         if (ret)
 556                                 continue;
 557
 558                         if (!drv->probe ||
 559                             (dev->device.devargs &&
 560                             dev->device.devargs->policy == RTE_DEV_BLACKLISTED))
 561                                 continue;
 562
 563                         if (probe_all ||
 564                             (dev->device.devargs &&
 565                             dev->device.devargs->policy ==
 566                             RTE_DEV_WHITELISTED)) {
 567                                 ret = drv->probe(drv, dev);
 568                                 if (ret) {
 569                                         DPAA_BUS_ERR("Unable to probe.\n");
 570                                 } else {
 571                                         dev->driver = drv;
 572                                         dev->device.driver = &drv->driver;
 573                                 }
 574                         }
 575                         break;
 576                 }
 577         }
 578
 579         /* Register DPAA mempool ops only if any DPAA device has
 580          * been detected.
 581          */
 582         if (!TAILQ_EMPTY(&rte_dpaa_bus.device_list))
 583                 rte_mbuf_set_platform_mempool_ops(DPAA_MEMPOOL_OPS_NAME);
 584
 585         return 0;
 586 }
 587
 588 static struct rte_device *
 589 rte_dpaa_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
 590                      const void *data)
 591 {
 592         struct rte_dpaa_device *dev;
 593
 594         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
 595                 if (start && &dev->device == start) {
 596                         start = NULL;  /* starting point found */
 597                         continue;
 598                 }
 599
 600                 if (cmp(&dev->device, data) == 0)
 601                         return &dev->device;
 602         }
 603
 604         return NULL;
 605 }
 606
 607 /*
 608  * Get iommu class of DPAA2 devices on the bus.
 609  */
 610 static enum rte_iova_mode
 611 rte_dpaa_get_iommu_class(void)
 612 {
 613         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
 614             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
 615                 return RTE_IOVA_DC;
 616         }
 617         return RTE_IOVA_PA;
 618 }
 619
 620 struct rte_dpaa_bus rte_dpaa_bus = {
 621         .bus = {
 622                 .scan = rte_dpaa_bus_scan,
 623                 .probe = rte_dpaa_bus_probe,
 624                 .parse = rte_dpaa_bus_parse,
 625                 .find_device = rte_dpaa_find_device,
 626                 .get_iommu_class = rte_dpaa_get_iommu_class,
 627         },
 628         .device_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.device_list),
 629         .driver_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.driver_list),
 630         .device_count = 0,
 631 };
 632
 633 RTE_REGISTER_BUS(FSL_DPAA_BUS_NAME, rte_dpaa_bus.bus);
 634
 635 RTE_INIT(dpaa_init_log)
 636 {
 637         dpaa_logtype_bus = rte_log_register("bus.dpaa");
 638         if (dpaa_logtype_bus >= 0)
 639                 rte_log_set_level(dpaa_logtype_bus, RTE_LOG_NOTICE);
 640
 641         dpaa_logtype_mempool = rte_log_register("mempool.dpaa");
 642         if (dpaa_logtype_mempool >= 0)
 643                 rte_log_set_level(dpaa_logtype_mempool, RTE_LOG_NOTICE);
 644
 645         dpaa_logtype_pmd = rte_log_register("pmd.net.dpaa");
 646         if (dpaa_logtype_pmd >= 0)
 647                 rte_log_set_level(dpaa_logtype_pmd, RTE_LOG_NOTICE);
 648
 649         dpaa_logtype_eventdev = rte_log_register("pmd.event.dpaa");
 650         if (dpaa_logtype_eventdev >= 0)
 651                 rte_log_set_level(dpaa_logtype_eventdev, RTE_LOG_NOTICE);
 652 }