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