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 #include <rte_mbuf_pool_ops.h>
  35
  36 #include <rte_dpaa_bus.h>
  37 #include <rte_dpaa_logs.h>
  38
  39 #include <fsl_usd.h>
  40 #include <fsl_qman.h>
  41 #include <fsl_bman.h>
  42 #include <of.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 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 pthread_key_t dpaa_portal_key;
  55
  56 unsigned int dpaa_svr_family;
  57
  58 RTE_DEFINE_PER_LCORE(bool, _dpaa_io);
  59 RTE_DEFINE_PER_LCORE(struct dpaa_portal_dqrr, held_bufs);
  60
  61 static inline void
  62 dpaa_add_to_device_list(struct rte_dpaa_device *dev)
  63 {
  64         TAILQ_INSERT_TAIL(&rte_dpaa_bus.device_list, dev, next);
  65 }
  66
  67 /*
  68  * Reads the SEC device from DTS
  69  * Returns -1 if SEC devices not available, 0 otherwise
  70  */
  71 static inline int
  72 dpaa_sec_available(void)
  73 {
  74         const struct device_node *caam_node;
  75
  76         for_each_compatible_node(caam_node, NULL, "fsl,sec-v4.0") {
  77                 return 0;
  78         }
  79
  80         return -1;
  81 }
  82
  83 static void dpaa_clean_device_list(void);
  84
  85 static int
  86 dpaa_create_device_list(void)
  87 {
  88         int i;
  89         int ret;
  90         struct rte_dpaa_device *dev;
  91         struct fm_eth_port_cfg *cfg;
  92         struct fman_if *fman_intf;
  93
  94         /* Creating Ethernet Devices */
  95         for (i = 0; i < dpaa_netcfg->num_ethports; i++) {
  96                 dev = calloc(1, sizeof(struct rte_dpaa_device));
  97                 if (!dev) {
  98                         DPAA_BUS_LOG(ERR, "Failed to allocate ETH devices");
  99                         ret = -ENOMEM;
 100                         goto cleanup;
 101                 }
 102
 103                 cfg = &dpaa_netcfg->port_cfg[i];
 104                 fman_intf = cfg->fman_if;
 105
 106                 /* Device identifiers */
 107                 dev->id.fman_id = fman_intf->fman_idx + 1;
 108                 dev->id.mac_id = fman_intf->mac_idx;
 109                 dev->device_type = FSL_DPAA_ETH;
 110                 dev->id.dev_id = i;
 111
 112                 /* Create device name */
 113                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 114                 sprintf(dev->name, "fm%d-mac%d", (fman_intf->fman_idx + 1),
 115                         fman_intf->mac_idx);
 116                 DPAA_BUS_LOG(DEBUG, "Device added: %s", dev->name);
 117                 dev->device.name = dev->name;
 118
 119                 dpaa_add_to_device_list(dev);
 120         }
 121
 122         rte_dpaa_bus.device_count = i;
 123
 124         /* Unlike case of ETH, RTE_LIBRTE_DPAA_MAX_CRYPTODEV SEC devices are
 125          * constantly created only if "sec" property is found in the device
 126          * tree. Logically there is no limit for number of devices (QI
 127          * interfaces) that can be created.
 128          */
 129
 130         if (dpaa_sec_available()) {
 131                 DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
 132                 return 0;
 133         }
 134
 135         /* Creating SEC Devices */
 136         for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
 137                 dev = calloc(1, sizeof(struct rte_dpaa_device));
 138                 if (!dev) {
 139                         DPAA_BUS_LOG(ERR, "Failed to allocate SEC devices");
 140                         ret = -1;
 141                         goto cleanup;
 142                 }
 143
 144                 dev->device_type = FSL_DPAA_CRYPTO;
 145                 dev->id.dev_id = rte_dpaa_bus.device_count + i;
 146
 147                 /* Even though RTE_CRYPTODEV_NAME_MAX_LEN is valid length of
 148                  * crypto PMD, using RTE_ETH_NAME_MAX_LEN as that is the size
 149                  * allocated for dev->name/
 150                  */
 151                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 152                 sprintf(dev->name, "dpaa-sec%d", i);
 153                 DPAA_BUS_LOG(DEBUG, "Device added: %s", dev->name);
 154
 155                 dpaa_add_to_device_list(dev);
 156         }
 157
 158         rte_dpaa_bus.device_count += i;
 159
 160         return 0;
 161
 162 cleanup:
 163         dpaa_clean_device_list();
 164         return ret;
 165 }
 166
 167 static void
 168 dpaa_clean_device_list(void)
 169 {
 170         struct rte_dpaa_device *dev = NULL;
 171         struct rte_dpaa_device *tdev = NULL;
 172
 173         TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
 174                 TAILQ_REMOVE(&rte_dpaa_bus.device_list, dev, next);
 175                 free(dev);
 176                 dev = NULL;
 177         }
 178 }
 179
 180 /** XXX move this function into a separate file */
 181 static int
 182 _dpaa_portal_init(void *arg)
 183 {
 184         cpu_set_t cpuset;
 185         pthread_t id;
 186         uint32_t cpu = rte_lcore_id();
 187         int ret;
 188         struct dpaa_portal *dpaa_io_portal;
 189
 190         BUS_INIT_FUNC_TRACE();
 191
 192         if ((uint64_t)arg == 1 || cpu == LCORE_ID_ANY)
 193                 cpu = rte_get_master_lcore();
 194         /* if the core id is not supported */
 195         else
 196                 if (cpu >= RTE_MAX_LCORE)
 197                         return -1;
 198
 199         /* Set CPU affinity for this thread */
 200         CPU_ZERO(&cpuset);
 201         CPU_SET(cpu, &cpuset);
 202         id = pthread_self();
 203         ret = pthread_setaffinity_np(id, sizeof(cpu_set_t), &cpuset);
 204         if (ret) {
 205                 DPAA_BUS_LOG(ERR, "pthread_setaffinity_np failed on "
 206                         "core :%d with ret: %d", cpu, ret);
 207                 return ret;
 208         }
 209
 210         /* Initialise bman thread portals */
 211         ret = bman_thread_init();
 212         if (ret) {
 213                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on "
 214                         "core %d with ret: %d", cpu, ret);
 215                 return ret;
 216         }
 217
 218         DPAA_BUS_LOG(DEBUG, "BMAN thread initialized");
 219
 220         /* Initialise qman thread portals */
 221         ret = qman_thread_init();
 222         if (ret) {
 223                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on "
 224                         "core %d with ret: %d", cpu, ret);
 225                 bman_thread_finish();
 226                 return ret;
 227         }
 228
 229         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
 230
 231         dpaa_io_portal = rte_malloc(NULL, sizeof(struct dpaa_portal),
 232                                     RTE_CACHE_LINE_SIZE);
 233         if (!dpaa_io_portal) {
 234                 DPAA_BUS_LOG(ERR, "Unable to allocate memory");
 235                 bman_thread_finish();
 236                 qman_thread_finish();
 237                 return -ENOMEM;
 238         }
 239
 240         dpaa_io_portal->qman_idx = qman_get_portal_index();
 241         dpaa_io_portal->bman_idx = bman_get_portal_index();
 242         dpaa_io_portal->tid = syscall(SYS_gettid);
 243
 244         ret = pthread_setspecific(dpaa_portal_key, (void *)dpaa_io_portal);
 245         if (ret) {
 246                 DPAA_BUS_LOG(ERR, "pthread_setspecific failed on "
 247                             "core %d with ret: %d", cpu, ret);
 248                 dpaa_portal_finish(NULL);
 249
 250                 return ret;
 251         }
 252
 253         RTE_PER_LCORE(_dpaa_io) = true;
 254
 255         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
 256
 257         return 0;
 258 }
 259
 260 /*
 261  * rte_dpaa_portal_init - Wrapper over _dpaa_portal_init with thread level check
 262  * XXX Complete this
 263  */
 264 int rte_dpaa_portal_init(void *arg)
 265 {
 266         if (unlikely(!RTE_PER_LCORE(_dpaa_io)))
 267                 return _dpaa_portal_init(arg);
 268
 269         return 0;
 270 }
 271
 272 int
 273 rte_dpaa_portal_fq_init(void *arg, struct qman_fq *fq)
 274 {
 275         /* Affine above created portal with channel*/
 276         u32 sdqcr;
 277         struct qman_portal *qp;
 278
 279         if (unlikely(!RTE_PER_LCORE(_dpaa_io)))
 280                 _dpaa_portal_init(arg);
 281
 282         /* Initialise qman specific portals */
 283         qp = fsl_qman_portal_create();
 284         if (!qp) {
 285                 DPAA_BUS_LOG(ERR, "Unable to alloc fq portal");
 286                 return -1;
 287         }
 288         fq->qp = qp;
 289         sdqcr = QM_SDQCR_CHANNELS_POOL_CONV(fq->ch_id);
 290         qman_static_dequeue_add(sdqcr, qp);
 291
 292         return 0;
 293 }
 294
 295 int rte_dpaa_portal_fq_close(struct qman_fq *fq)
 296 {
 297         return fsl_qman_portal_destroy(fq->qp);
 298 }
 299
 300 void
 301 dpaa_portal_finish(void *arg)
 302 {
 303         struct dpaa_portal *dpaa_io_portal = (struct dpaa_portal *)arg;
 304
 305         if (!dpaa_io_portal) {
 306                 DPAA_BUS_LOG(DEBUG, "Portal already cleaned");
 307                 return;
 308         }
 309
 310         bman_thread_finish();
 311         qman_thread_finish();
 312
 313         pthread_setspecific(dpaa_portal_key, NULL);
 314
 315         rte_free(dpaa_io_portal);
 316         dpaa_io_portal = NULL;
 317
 318         RTE_PER_LCORE(_dpaa_io) = false;
 319 }
 320
 321 #define DPAA_DEV_PATH1 "/sys/devices/platform/soc/soc:fsl,dpaa"
 322 #define DPAA_DEV_PATH2 "/sys/devices/platform/fsl,dpaa"
 323
 324 static int
 325 rte_dpaa_bus_scan(void)
 326 {
 327         int ret;
 328
 329         BUS_INIT_FUNC_TRACE();
 330
 331         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
 332             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
 333                 RTE_LOG(DEBUG, EAL, "DPAA Bus not present. Skipping.\n");
 334                 return 0;
 335         }
 336
 337         /* Load the device-tree driver */
 338         ret = of_init();
 339         if (ret) {
 340                 DPAA_BUS_LOG(ERR, "of_init failed with ret: %d", ret);
 341                 return -1;
 342         }
 343
 344         /* Get the interface configurations from device-tree */
 345         dpaa_netcfg = netcfg_acquire();
 346         if (!dpaa_netcfg) {
 347                 DPAA_BUS_LOG(ERR, "netcfg_acquire failed");
 348                 return -EINVAL;
 349         }
 350
 351         RTE_LOG(NOTICE, EAL, "DPAA Bus Detected\n");
 352
 353         if (!dpaa_netcfg->num_ethports) {
 354                 DPAA_BUS_LOG(INFO, "no network interfaces available");
 355                 /* This is not an error */
 356                 return 0;
 357         }
 358
 359         DPAA_BUS_LOG(DEBUG, "Bus: Address of netcfg=%p, Ethports=%d",
 360                      dpaa_netcfg, dpaa_netcfg->num_ethports);
 361
 362 #ifdef RTE_LIBRTE_DPAA_DEBUG_DRIVER
 363         dump_netcfg(dpaa_netcfg);
 364 #endif
 365
 366         DPAA_BUS_LOG(DEBUG, "Number of devices = %d\n",
 367                      dpaa_netcfg->num_ethports);
 368         ret = dpaa_create_device_list();
 369         if (ret) {
 370                 DPAA_BUS_LOG(ERR, "Unable to create device list. (%d)", ret);
 371                 return ret;
 372         }
 373
 374         /* create the key, supplying a function that'll be invoked
 375          * when a portal affined thread will be deleted.
 376          */
 377         ret = pthread_key_create(&dpaa_portal_key, dpaa_portal_finish);
 378         if (ret) {
 379                 DPAA_BUS_LOG(DEBUG, "Unable to create pthread key. (%d)", ret);
 380                 dpaa_clean_device_list();
 381                 return ret;
 382         }
 383
 384         DPAA_BUS_LOG(DEBUG, "dpaa_portal_key=%u, ret=%d\n",
 385                     (unsigned int)dpaa_portal_key, ret);
 386
 387         return 0;
 388 }
 389
 390 /* register a dpaa bus based dpaa driver */
 391 void
 392 rte_dpaa_driver_register(struct rte_dpaa_driver *driver)
 393 {
 394         RTE_VERIFY(driver);
 395
 396         BUS_INIT_FUNC_TRACE();
 397
 398         TAILQ_INSERT_TAIL(&rte_dpaa_bus.driver_list, driver, next);
 399         /* Update Bus references */
 400         driver->dpaa_bus = &rte_dpaa_bus;
 401 }
 402
 403 /* un-register a dpaa bus based dpaa driver */
 404 void
 405 rte_dpaa_driver_unregister(struct rte_dpaa_driver *driver)
 406 {
 407         struct rte_dpaa_bus *dpaa_bus;
 408
 409         BUS_INIT_FUNC_TRACE();
 410
 411         dpaa_bus = driver->dpaa_bus;
 412
 413         TAILQ_REMOVE(&dpaa_bus->driver_list, driver, next);
 414         /* Update Bus references */
 415         driver->dpaa_bus = NULL;
 416 }
 417
 418 static int
 419 rte_dpaa_device_match(struct rte_dpaa_driver *drv,
 420                       struct rte_dpaa_device *dev)
 421 {
 422         int ret = -1;
 423
 424         BUS_INIT_FUNC_TRACE();
 425
 426         if (!drv || !dev) {
 427                 DPAA_BUS_DEBUG("Invalid drv or dev received.");
 428                 return ret;
 429         }
 430
 431         if (drv->drv_type == dev->device_type) {
 432                 DPAA_BUS_INFO("Device: %s matches for driver: %s",
 433                               dev->name, drv->driver.name);
 434                 ret = 0; /* Found a match */
 435         }
 436
 437         return ret;
 438 }
 439
 440 static int
 441 rte_dpaa_bus_probe(void)
 442 {
 443         int ret = -1;
 444         struct rte_dpaa_device *dev;
 445         struct rte_dpaa_driver *drv;
 446         FILE *svr_file = NULL;
 447         unsigned int svr_ver;
 448
 449         BUS_INIT_FUNC_TRACE();
 450
 451         /* For each registered driver, and device, call the driver->probe */
 452         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
 453                 TAILQ_FOREACH(drv, &rte_dpaa_bus.driver_list, next) {
 454                         ret = rte_dpaa_device_match(drv, dev);
 455                         if (ret)
 456                                 continue;
 457
 458                         if (!drv->probe)
 459                                 continue;
 460
 461                         ret = drv->probe(drv, dev);
 462                         if (ret)
 463                                 DPAA_BUS_ERR("Unable to probe.\n");
 464                         break;
 465                 }
 466         }
 467         rte_mbuf_set_platform_mempool_ops(DPAA_MEMPOOL_OPS_NAME);
 468
 469         svr_file = fopen(DPAA_SOC_ID_FILE, "r");
 470         if (svr_file) {
 471                 if (fscanf(svr_file, "svr:%x", &svr_ver) > 0)
 472                         dpaa_svr_family = svr_ver & SVR_MASK;
 473                 fclose(svr_file);
 474         }
 475
 476         return 0;
 477 }
 478
 479 static struct rte_device *
 480 rte_dpaa_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
 481                      const void *data)
 482 {
 483         struct rte_dpaa_device *dev;
 484
 485         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
 486                 if (start && &dev->device == start) {
 487                         start = NULL;  /* starting point found */
 488                         continue;
 489                 }
 490
 491                 if (cmp(&dev->device, data) == 0)
 492                         return &dev->device;
 493         }
 494
 495         return NULL;
 496 }
 497
 498 /*
 499  * Get iommu class of DPAA2 devices on the bus.
 500  */
 501 static enum rte_iova_mode
 502 rte_dpaa_get_iommu_class(void)
 503 {
 504         return RTE_IOVA_PA;
 505 }
 506
 507 struct rte_dpaa_bus rte_dpaa_bus = {
 508         .bus = {
 509                 .scan = rte_dpaa_bus_scan,
 510                 .probe = rte_dpaa_bus_probe,
 511                 .find_device = rte_dpaa_find_device,
 512                 .get_iommu_class = rte_dpaa_get_iommu_class,
 513         },
 514         .device_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.device_list),
 515         .driver_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.driver_list),
 516         .device_count = 0,
 517 };
 518
 519 RTE_REGISTER_BUS(FSL_DPAA_BUS_NAME, rte_dpaa_bus.bus);
 520
 521 RTE_INIT(dpaa_init_log);
 522 static void
 523 dpaa_init_log(void)
 524 {
 525         dpaa_logtype_bus = rte_log_register("bus.dpaa");
 526         if (dpaa_logtype_bus >= 0)
 527                 rte_log_set_level(dpaa_logtype_bus, RTE_LOG_NOTICE);
 528
 529         dpaa_logtype_mempool = rte_log_register("mempool.dpaa");
 530         if (dpaa_logtype_mempool >= 0)
 531                 rte_log_set_level(dpaa_logtype_mempool, RTE_LOG_NOTICE);
 532
 533         dpaa_logtype_pmd = rte_log_register("pmd.dpaa");
 534         if (dpaa_logtype_pmd >= 0)
 535                 rte_log_set_level(dpaa_logtype_pmd, RTE_LOG_NOTICE);
 536
 537         dpaa_logtype_eventdev = rte_log_register("eventdev.dpaa");
 538         if (dpaa_logtype_eventdev >= 0)
 539                 rte_log_set_level(dpaa_logtype_eventdev, RTE_LOG_NOTICE);
 540 }