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