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