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.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
  48 struct rte_dpaa_bus rte_dpaa_bus;
  49 struct netcfg_info *dpaa_netcfg;
  50
  51 /* define a variable to hold the portal_key, once created.*/
  52 pthread_key_t dpaa_portal_key;
  53
  54 unsigned int dpaa_svr_family;
  55
  56 RTE_DEFINE_PER_LCORE(bool, _dpaa_io);
  57 RTE_DEFINE_PER_LCORE(struct dpaa_portal_dqrr, held_bufs);
  58
  59 static inline void
  60 dpaa_add_to_device_list(struct rte_dpaa_device *dev)
  61 {
  62         TAILQ_INSERT_TAIL(&rte_dpaa_bus.device_list, dev, next);
  63 }
  64
  65 static inline void
  66 dpaa_remove_from_device_list(struct rte_dpaa_device *dev)
  67 {
  68         TAILQ_INSERT_TAIL(&rte_dpaa_bus.device_list, dev, next);
  69 }
  70
  71 /*
  72  * Reads the SEC device from DTS
  73  * Returns -1 if SEC devices not available, 0 otherwise
  74  */
  75 static inline int
  76 dpaa_sec_available(void)
  77 {
  78         const struct device_node *caam_node;
  79
  80         for_each_compatible_node(caam_node, NULL, "fsl,sec-v4.0") {
  81                 return 0;
  82         }
  83
  84         return -1;
  85 }
  86
  87 static void dpaa_clean_device_list(void);
  88
  89 static int
  90 dpaa_create_device_list(void)
  91 {
  92         int i;
  93         int ret;
  94         struct rte_dpaa_device *dev;
  95         struct fm_eth_port_cfg *cfg;
  96         struct fman_if *fman_intf;
  97
  98         /* Creating Ethernet Devices */
  99         for (i = 0; i < dpaa_netcfg->num_ethports; i++) {
 100                 dev = calloc(1, sizeof(struct rte_dpaa_device));
 101                 if (!dev) {
 102                         DPAA_BUS_LOG(ERR, "Failed to allocate ETH devices");
 103                         ret = -ENOMEM;
 104                         goto cleanup;
 105                 }
 106
 107                 cfg = &dpaa_netcfg->port_cfg[i];
 108                 fman_intf = cfg->fman_if;
 109
 110                 /* Device identifiers */
 111                 dev->id.fman_id = fman_intf->fman_idx + 1;
 112                 dev->id.mac_id = fman_intf->mac_idx;
 113                 dev->device_type = FSL_DPAA_ETH;
 114                 dev->id.dev_id = i;
 115
 116                 /* Create device name */
 117                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 118                 sprintf(dev->name, "fm%d-mac%d", (fman_intf->fman_idx + 1),
 119                         fman_intf->mac_idx);
 120                 DPAA_BUS_LOG(DEBUG, "Device added: %s", dev->name);
 121                 dev->device.name = dev->name;
 122
 123                 dpaa_add_to_device_list(dev);
 124         }
 125
 126         rte_dpaa_bus.device_count = i;
 127
 128         /* Unlike case of ETH, RTE_LIBRTE_DPAA_MAX_CRYPTODEV SEC devices are
 129          * constantly created only if "sec" property is found in the device
 130          * tree. Logically there is no limit for number of devices (QI
 131          * interfaces) that can be created.
 132          */
 133
 134         if (dpaa_sec_available()) {
 135                 DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
 136                 return 0;
 137         }
 138
 139         /* Creating SEC Devices */
 140         for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
 141                 dev = calloc(1, sizeof(struct rte_dpaa_device));
 142                 if (!dev) {
 143                         DPAA_BUS_LOG(ERR, "Failed to allocate SEC devices");
 144                         ret = -1;
 145                         goto cleanup;
 146                 }
 147
 148                 dev->device_type = FSL_DPAA_CRYPTO;
 149                 dev->id.dev_id = rte_dpaa_bus.device_count + i;
 150
 151                 /* Even though RTE_CRYPTODEV_NAME_MAX_LEN is valid length of
 152                  * crypto PMD, using RTE_ETH_NAME_MAX_LEN as that is the size
 153                  * allocated for dev->name/
 154                  */
 155                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 156                 sprintf(dev->name, "dpaa-sec%d", i);
 157                 DPAA_BUS_LOG(DEBUG, "Device added: %s", dev->name);
 158
 159                 dpaa_add_to_device_list(dev);
 160         }
 161
 162         rte_dpaa_bus.device_count += i;
 163
 164         return 0;
 165
 166 cleanup:
 167         dpaa_clean_device_list();
 168         return ret;
 169 }
 170
 171 static void
 172 dpaa_clean_device_list(void)
 173 {
 174         struct rte_dpaa_device *dev = NULL;
 175         struct rte_dpaa_device *tdev = NULL;
 176
 177         TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
 178                 TAILQ_REMOVE(&rte_dpaa_bus.device_list, dev, next);
 179                 free(dev);
 180                 dev = NULL;
 181         }
 182 }
 183
 184 /** XXX move this function into a separate file */
 185 static int
 186 _dpaa_portal_init(void *arg)
 187 {
 188         cpu_set_t cpuset;
 189         pthread_t id;
 190         uint32_t cpu = rte_lcore_id();
 191         int ret;
 192         struct dpaa_portal *dpaa_io_portal;
 193
 194         BUS_INIT_FUNC_TRACE();
 195
 196         if ((uint64_t)arg == 1 || cpu == LCORE_ID_ANY)
 197                 cpu = rte_get_master_lcore();
 198         /* if the core id is not supported */
 199         else
 200                 if (cpu >= RTE_MAX_LCORE)
 201                         return -1;
 202
 203         /* Set CPU affinity for this thread */
 204         CPU_ZERO(&cpuset);
 205         CPU_SET(cpu, &cpuset);
 206         id = pthread_self();
 207         ret = pthread_setaffinity_np(id, sizeof(cpu_set_t), &cpuset);
 208         if (ret) {
 209                 DPAA_BUS_LOG(ERR, "pthread_setaffinity_np failed on "
 210                         "core :%d with ret: %d", cpu, ret);
 211                 return ret;
 212         }
 213
 214         /* Initialise bman thread portals */
 215         ret = bman_thread_init();
 216         if (ret) {
 217                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on "
 218                         "core %d with ret: %d", cpu, ret);
 219                 return ret;
 220         }
 221
 222         DPAA_BUS_LOG(DEBUG, "BMAN thread initialized");
 223
 224         /* Initialise qman thread portals */
 225         ret = qman_thread_init();
 226         if (ret) {
 227                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on "
 228                         "core %d with ret: %d", cpu, ret);
 229                 bman_thread_finish();
 230                 return ret;
 231         }
 232
 233         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
 234
 235         dpaa_io_portal = rte_malloc(NULL, sizeof(struct dpaa_portal),
 236                                     RTE_CACHE_LINE_SIZE);
 237         if (!dpaa_io_portal) {
 238                 DPAA_BUS_LOG(ERR, "Unable to allocate memory");
 239                 bman_thread_finish();
 240                 qman_thread_finish();
 241                 return -ENOMEM;
 242         }
 243
 244         dpaa_io_portal->qman_idx = qman_get_portal_index();
 245         dpaa_io_portal->bman_idx = bman_get_portal_index();
 246         dpaa_io_portal->tid = syscall(SYS_gettid);
 247
 248         ret = pthread_setspecific(dpaa_portal_key, (void *)dpaa_io_portal);
 249         if (ret) {
 250                 DPAA_BUS_LOG(ERR, "pthread_setspecific failed on "
 251                             "core %d with ret: %d", cpu, ret);
 252                 dpaa_portal_finish(NULL);
 253
 254                 return ret;
 255         }
 256
 257         RTE_PER_LCORE(_dpaa_io) = true;
 258
 259         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
 260
 261         return 0;
 262 }
 263
 264 /*
 265  * rte_dpaa_portal_init - Wrapper over _dpaa_portal_init with thread level check
 266  * XXX Complete this
 267  */
 268 int rte_dpaa_portal_init(void *arg)
 269 {
 270         if (unlikely(!RTE_PER_LCORE(_dpaa_io)))
 271                 return _dpaa_portal_init(arg);
 272
 273         return 0;
 274 }
 275
 276 int
 277 rte_dpaa_portal_fq_init(void *arg, struct qman_fq *fq)
 278 {
 279         /* Affine above created portal with channel*/
 280         u32 sdqcr;
 281         struct qman_portal *qp;
 282
 283         if (unlikely(!RTE_PER_LCORE(_dpaa_io)))
 284                 _dpaa_portal_init(arg);
 285
 286         /* Initialise qman specific portals */
 287         qp = fsl_qman_portal_create();
 288         if (!qp) {
 289                 DPAA_BUS_LOG(ERR, "Unable to alloc fq portal");
 290                 return -1;
 291         }
 292         fq->qp = qp;
 293         sdqcr = QM_SDQCR_CHANNELS_POOL_CONV(fq->ch_id);
 294         qman_static_dequeue_add(sdqcr, qp);
 295
 296         return 0;
 297 }
 298
 299 int rte_dpaa_portal_fq_close(struct qman_fq *fq)
 300 {
 301         return fsl_qman_portal_destroy(fq->qp);
 302 }
 303
 304 void
 305 dpaa_portal_finish(void *arg)
 306 {
 307         struct dpaa_portal *dpaa_io_portal = (struct dpaa_portal *)arg;
 308
 309         if (!dpaa_io_portal) {
 310                 DPAA_BUS_LOG(DEBUG, "Portal already cleaned");
 311                 return;
 312         }
 313
 314         bman_thread_finish();
 315         qman_thread_finish();
 316
 317         pthread_setspecific(dpaa_portal_key, NULL);
 318
 319         rte_free(dpaa_io_portal);
 320         dpaa_io_portal = NULL;
 321
 322         RTE_PER_LCORE(_dpaa_io) = false;
 323 }
 324
 325 #define DPAA_DEV_PATH1 "/sys/devices/platform/soc/soc:fsl,dpaa"
 326 #define DPAA_DEV_PATH2 "/sys/devices/platform/fsl,dpaa"
 327
 328 static int
 329 rte_dpaa_bus_scan(void)
 330 {
 331         int ret;
 332
 333         BUS_INIT_FUNC_TRACE();
 334
 335         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
 336             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
 337                 RTE_LOG(DEBUG, EAL, "DPAA Bus not present. Skipping.\n");
 338                 return 0;
 339         }
 340
 341         /* Load the device-tree driver */
 342         ret = of_init();
 343         if (ret) {
 344                 DPAA_BUS_LOG(ERR, "of_init failed with ret: %d", ret);
 345                 return -1;
 346         }
 347
 348         /* Get the interface configurations from device-tree */
 349         dpaa_netcfg = netcfg_acquire();
 350         if (!dpaa_netcfg) {
 351                 DPAA_BUS_LOG(ERR, "netcfg_acquire failed");
 352                 return -EINVAL;
 353         }
 354
 355         RTE_LOG(NOTICE, EAL, "DPAA Bus Detected\n");
 356
 357         if (!dpaa_netcfg->num_ethports) {
 358                 DPAA_BUS_LOG(INFO, "no network interfaces available");
 359                 /* This is not an error */
 360                 return 0;
 361         }
 362
 363         DPAA_BUS_LOG(DEBUG, "Bus: Address of netcfg=%p, Ethports=%d",
 364                      dpaa_netcfg, dpaa_netcfg->num_ethports);
 365
 366 #ifdef RTE_LIBRTE_DPAA_DEBUG_DRIVER
 367         dump_netcfg(dpaa_netcfg);
 368 #endif
 369
 370         DPAA_BUS_LOG(DEBUG, "Number of devices = %d\n",
 371                      dpaa_netcfg->num_ethports);
 372         ret = dpaa_create_device_list();
 373         if (ret) {
 374                 DPAA_BUS_LOG(ERR, "Unable to create device list. (%d)", ret);
 375                 return ret;
 376         }
 377
 378         /* create the key, supplying a function that'll be invoked
 379          * when a portal affined thread will be deleted.
 380          */
 381         ret = pthread_key_create(&dpaa_portal_key, dpaa_portal_finish);
 382         if (ret) {
 383                 DPAA_BUS_LOG(DEBUG, "Unable to create pthread key. (%d)", ret);
 384                 dpaa_clean_device_list();
 385                 return ret;
 386         }
 387
 388         DPAA_BUS_LOG(DEBUG, "dpaa_portal_key=%u, ret=%d\n",
 389                     (unsigned int)dpaa_portal_key, ret);
 390
 391         return 0;
 392 }
 393
 394 /* register a dpaa bus based dpaa driver */
 395 void
 396 rte_dpaa_driver_register(struct rte_dpaa_driver *driver)
 397 {
 398         RTE_VERIFY(driver);
 399
 400         BUS_INIT_FUNC_TRACE();
 401
 402         TAILQ_INSERT_TAIL(&rte_dpaa_bus.driver_list, driver, next);
 403         /* Update Bus references */
 404         driver->dpaa_bus = &rte_dpaa_bus;
 405 }
 406
 407 /* un-register a dpaa bus based dpaa driver */
 408 void
 409 rte_dpaa_driver_unregister(struct rte_dpaa_driver *driver)
 410 {
 411         struct rte_dpaa_bus *dpaa_bus;
 412
 413         BUS_INIT_FUNC_TRACE();
 414
 415         dpaa_bus = driver->dpaa_bus;
 416
 417         TAILQ_REMOVE(&dpaa_bus->driver_list, driver, next);
 418         /* Update Bus references */
 419         driver->dpaa_bus = NULL;
 420 }
 421
 422 static int
 423 rte_dpaa_device_match(struct rte_dpaa_driver *drv,
 424                       struct rte_dpaa_device *dev)
 425 {
 426         int ret = -1;
 427
 428         BUS_INIT_FUNC_TRACE();
 429
 430         if (!drv || !dev) {
 431                 DPAA_BUS_DEBUG("Invalid drv or dev received.");
 432                 return ret;
 433         }
 434
 435         if (drv->drv_type == dev->device_type) {
 436                 DPAA_BUS_INFO("Device: %s matches for driver: %s",
 437                               dev->name, drv->driver.name);
 438                 ret = 0; /* Found a match */
 439         }
 440
 441         return ret;
 442 }
 443
 444 static int
 445 rte_dpaa_bus_probe(void)
 446 {
 447         int ret = -1;
 448         struct rte_dpaa_device *dev;
 449         struct rte_dpaa_driver *drv;
 450         FILE *svr_file = NULL;
 451         unsigned int svr_ver;
 452
 453         BUS_INIT_FUNC_TRACE();
 454
 455         /* For each registered driver, and device, call the driver->probe */
 456         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
 457                 TAILQ_FOREACH(drv, &rte_dpaa_bus.driver_list, next) {
 458                         ret = rte_dpaa_device_match(drv, dev);
 459                         if (ret)
 460                                 continue;
 461
 462                         if (!drv->probe)
 463                                 continue;
 464
 465                         ret = drv->probe(drv, dev);
 466                         if (ret)
 467                                 DPAA_BUS_ERR("Unable to probe.\n");
 468                         break;
 469                 }
 470         }
 471
 472         svr_file = fopen(DPAA_SOC_ID_FILE, "r");
 473         if (svr_file) {
 474                 if (fscanf(svr_file, "svr:%x", &svr_ver) > 0)
 475                         dpaa_svr_family = svr_ver & SVR_MASK;
 476                 fclose(svr_file);
 477         }
 478
 479         return 0;
 480 }
 481
 482 static struct rte_device *
 483 rte_dpaa_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
 484                      const void *data)
 485 {
 486         struct rte_dpaa_device *dev;
 487
 488         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
 489                 if (start && &dev->device == start) {
 490                         start = NULL;  /* starting point found */
 491                         continue;
 492                 }
 493
 494                 if (cmp(&dev->device, data) == 0)
 495                         return &dev->device;
 496         }
 497
 498         return NULL;
 499 }
 500
 501 /*
 502  * Get iommu class of DPAA2 devices on the bus.
 503  */
 504 static enum rte_iova_mode
 505 rte_dpaa_get_iommu_class(void)
 506 {
 507         return RTE_IOVA_PA;
 508 }
 509
 510 struct rte_dpaa_bus rte_dpaa_bus = {
 511         .bus = {
 512                 .scan = rte_dpaa_bus_scan,
 513                 .probe = rte_dpaa_bus_probe,
 514                 .find_device = rte_dpaa_find_device,
 515                 .get_iommu_class = rte_dpaa_get_iommu_class,
 516         },
 517         .device_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.device_list),
 518         .driver_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.driver_list),
 519         .device_count = 0,
 520 };
 521
 522 RTE_REGISTER_BUS(FSL_DPAA_BUS_NAME, rte_dpaa_bus.bus);
 523
 524 RTE_INIT(dpaa_init_log);
 525 static void
 526 dpaa_init_log(void)
 527 {
 528         dpaa_logtype_bus = rte_log_register("bus.dpaa");
 529         if (dpaa_logtype_bus >= 0)
 530                 rte_log_set_level(dpaa_logtype_bus, RTE_LOG_NOTICE);
 531
 532         dpaa_logtype_mempool = rte_log_register("mempool.dpaa");
 533         if (dpaa_logtype_mempool >= 0)
 534                 rte_log_set_level(dpaa_logtype_mempool, RTE_LOG_NOTICE);
 535
 536         dpaa_logtype_pmd = rte_log_register("pmd.dpaa");
 537         if (dpaa_logtype_pmd >= 0)
 538                 rte_log_set_level(dpaa_logtype_pmd, RTE_LOG_NOTICE);
 539 }