lib/eal/windows/eal.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2019 Intel Corporation
   3  */
   4
   5 #include <stdarg.h>
   6
   7 #include <fcntl.h>
   8 #include <io.h>
   9 #include <share.h>
  10 #include <sys/stat.h>
  11
  12 #include <rte_debug.h>
  13 #include <rte_eal.h>
  14 #include <eal_memcfg.h>
  15 #include <rte_errno.h>
  16 #include <rte_lcore.h>
  17 #include <eal_thread.h>
  18 #include <eal_internal_cfg.h>
  19 #include <eal_filesystem.h>
  20 #include <eal_options.h>
  21 #include <eal_private.h>
  22 #include <rte_service_component.h>
  23 #include <rte_vfio.h>
  24
  25 #include "eal_hugepages.h"
  26 #include "eal_trace.h"
  27 #include "eal_log.h"
  28 #include "eal_windows.h"
  29
  30 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)
  31
  32 /* define fd variable here, because file needs to be kept open for the
  33  * duration of the program, as we hold a write lock on it in the primary proc
  34  */
  35 static int mem_cfg_fd = -1;
  36
  37 /* internal configuration (per-core) */
  38 struct lcore_config lcore_config[RTE_MAX_LCORE];
  39
  40 /* Detect if we are a primary or a secondary process */
  41 enum rte_proc_type_t
  42 eal_proc_type_detect(void)
  43 {
  44         enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
  45         const char *pathname = eal_runtime_config_path();
  46         const struct rte_config *config = rte_eal_get_configuration();
  47
  48         /* if we can open the file but not get a write-lock we are a secondary
  49          * process. NOTE: if we get a file handle back, we keep that open
  50          * and don't close it to prevent a race condition between multiple opens
  51          */
  52         errno_t err = _sopen_s(&mem_cfg_fd, pathname,
  53                 _O_RDWR, _SH_DENYNO, _S_IREAD | _S_IWRITE);
  54         if (err == 0) {
  55                 OVERLAPPED soverlapped = { 0 };
  56                 soverlapped.Offset = sizeof(*config->mem_config);
  57                 soverlapped.OffsetHigh = 0;
  58
  59                 HANDLE hwinfilehandle = (HANDLE)_get_osfhandle(mem_cfg_fd);
  60
  61                 if (!LockFileEx(hwinfilehandle,
  62                         LOCKFILE_EXCLUSIVE_LOCK | LOCKFILE_FAIL_IMMEDIATELY, 0,
  63                         sizeof(*config->mem_config), 0, &soverlapped))
  64                         ptype = RTE_PROC_SECONDARY;
  65         }
  66
  67         RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
  68                 ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");
  69
  70         return ptype;
  71 }
  72
  73 bool
  74 rte_mp_disable(void)
  75 {
  76         return true;
  77 }
  78
  79 /* display usage */
  80 static void
  81 eal_usage(const char *prgname)
  82 {
  83         rte_usage_hook_t hook = eal_get_application_usage_hook();
  84
  85         printf("\nUsage: %s ", prgname);
  86         eal_common_usage();
  87         /* Allow the application to print its usage message too
  88          * if hook is set
  89          */
  90         if (hook) {
  91                 printf("===== Application Usage =====\n\n");
  92                 (hook)(prgname);
  93         }
  94 }
  95
  96 /* Parse the arguments for --log-level only */
  97 static void
  98 eal_log_level_parse(int argc, char **argv)
  99 {
 100         int opt;
 101         char **argvopt;
 102         int option_index;
 103         struct internal_config *internal_conf =
 104                 eal_get_internal_configuration();
 105
 106         argvopt = argv;
 107
 108         eal_reset_internal_config(internal_conf);
 109
 110         while ((opt = getopt_long(argc, argvopt, eal_short_options,
 111                 eal_long_options, &option_index)) != EOF) {
 112
 113                 int ret;
 114
 115                 /* getopt is not happy, stop right now */
 116                 if (opt == '?')
 117                         break;
 118
 119                 ret = (opt == OPT_LOG_LEVEL_NUM) ?
 120                         eal_parse_common_option(opt, optarg,
 121                                 internal_conf) : 0;
 122
 123                 /* common parser is not happy */
 124                 if (ret < 0)
 125                         break;
 126         }
 127
 128         optind = 0; /* reset getopt lib */
 129 }
 130
 131 /* Parse the argument given in the command line of the application */
 132 static int
 133 eal_parse_args(int argc, char **argv)
 134 {
 135         int opt, ret;
 136         char **argvopt;
 137         int option_index;
 138         char *prgname = argv[0];
 139         struct internal_config *internal_conf =
 140                 eal_get_internal_configuration();
 141
 142         argvopt = argv;
 143
 144         while ((opt = getopt_long(argc, argvopt, eal_short_options,
 145                 eal_long_options, &option_index)) != EOF) {
 146
 147                 int ret;
 148
 149                 /* getopt is not happy, stop right now */
 150                 if (opt == '?') {
 151                         eal_usage(prgname);
 152                         return -1;
 153                 }
 154
 155                 /* eal_log_level_parse() already handled this option */
 156                 if (opt == OPT_LOG_LEVEL_NUM)
 157                         continue;
 158
 159                 ret = eal_parse_common_option(opt, optarg, internal_conf);
 160                 /* common parser is not happy */
 161                 if (ret < 0) {
 162                         eal_usage(prgname);
 163                         return -1;
 164                 }
 165                 /* common parser handled this option */
 166                 if (ret == 0)
 167                         continue;
 168
 169                 switch (opt) {
 170                 case 'h':
 171                         eal_usage(prgname);
 172                         exit(EXIT_SUCCESS);
 173                 default:
 174                         if (opt < OPT_LONG_MIN_NUM && isprint(opt)) {
 175                                 RTE_LOG(ERR, EAL, "Option %c is not supported "
 176                                         "on Windows\n", opt);
 177                         } else if (opt >= OPT_LONG_MIN_NUM &&
 178                                 opt < OPT_LONG_MAX_NUM) {
 179                                 RTE_LOG(ERR, EAL, "Option %s is not supported "
 180                                         "on Windows\n",
 181                                         eal_long_options[option_index].name);
 182                         } else {
 183                                 RTE_LOG(ERR, EAL, "Option %d is not supported "
 184                                         "on Windows\n", opt);
 185                         }
 186                         eal_usage(prgname);
 187                         return -1;
 188                 }
 189         }
 190
 191         if (eal_adjust_config(internal_conf) != 0)
 192                 return -1;
 193
 194         /* sanity checks */
 195         if (eal_check_common_options(internal_conf) != 0) {
 196                 eal_usage(prgname);
 197                 return -1;
 198         }
 199
 200         if (optind >= 0)
 201                 argv[optind - 1] = prgname;
 202         ret = optind - 1;
 203         optind = 0; /* reset getopt lib */
 204         return ret;
 205 }
 206
 207 static int
 208 sync_func(void *arg __rte_unused)
 209 {
 210         return 0;
 211 }
 212
 213 static void
 214 rte_eal_init_alert(const char *msg)
 215 {
 216         fprintf(stderr, "EAL: FATAL: %s\n", msg);
 217         RTE_LOG(ERR, EAL, "%s\n", msg);
 218 }
 219
 220 /* Stubs to enable EAL trace point compilation
 221  * until eal_common_trace.c can be compiled.
 222  */
 223
 224 RTE_DEFINE_PER_LCORE(volatile int, trace_point_sz);
 225 RTE_DEFINE_PER_LCORE(void *, trace_mem);
 226
 227 void
 228 __rte_trace_mem_per_thread_alloc(void)
 229 {
 230 }
 231
 232 void
 233 trace_mem_per_thread_free(void)
 234 {
 235 }
 236
 237 void
 238 __rte_trace_point_emit_field(size_t sz, const char *field,
 239         const char *type)
 240 {
 241         RTE_SET_USED(sz);
 242         RTE_SET_USED(field);
 243         RTE_SET_USED(type);
 244 }
 245
 246 int
 247 __rte_trace_point_register(rte_trace_point_t *trace, const char *name,
 248         void (*register_fn)(void))
 249 {
 250         RTE_SET_USED(trace);
 251         RTE_SET_USED(name);
 252         RTE_SET_USED(register_fn);
 253         return -ENOTSUP;
 254 }
 255
 256 int
 257 rte_eal_cleanup(void)
 258 {
 259         struct internal_config *internal_conf =
 260                 eal_get_internal_configuration();
 261         /* after this point, any DPDK pointers will become dangling */
 262         rte_eal_memory_detach();
 263         eal_cleanup_config(internal_conf);
 264         return 0;
 265 }
 266
 267 /* Launch threads, called at application init(). */
 268 int
 269 rte_eal_init(int argc, char **argv)
 270 {
 271         int i, fctret, bscan;
 272         const struct rte_config *config = rte_eal_get_configuration();
 273         struct internal_config *internal_conf =
 274                 eal_get_internal_configuration();
 275         int ret;
 276
 277         eal_log_init(NULL, 0);
 278
 279         eal_log_level_parse(argc, argv);
 280
 281         if (eal_create_cpu_map() < 0) {
 282                 rte_eal_init_alert("Cannot discover CPU and NUMA.");
 283                 /* rte_errno is set */
 284                 return -1;
 285         }
 286
 287         if (rte_eal_cpu_init() < 0) {
 288                 rte_eal_init_alert("Cannot detect lcores.");
 289                 rte_errno = ENOTSUP;
 290                 return -1;
 291         }
 292
 293         fctret = eal_parse_args(argc, argv);
 294         if (fctret < 0)
 295                 exit(1);
 296
 297         if (eal_option_device_parse()) {
 298                 rte_errno = ENODEV;
 299                 return -1;
 300         }
 301
 302         /* Prevent creation of shared memory files. */
 303         if (internal_conf->in_memory == 0) {
 304                 RTE_LOG(WARNING, EAL, "Multi-process support is requested, "
 305                         "but not available.\n");
 306                 internal_conf->in_memory = 1;
 307                 internal_conf->no_shconf = 1;
 308         }
 309
 310         if (!internal_conf->no_hugetlbfs && (eal_hugepage_info_init() < 0)) {
 311                 rte_eal_init_alert("Cannot get hugepage information");
 312                 rte_errno = EACCES;
 313                 return -1;
 314         }
 315
 316         if (internal_conf->memory == 0 && !internal_conf->force_sockets) {
 317                 if (internal_conf->no_hugetlbfs)
 318                         internal_conf->memory = MEMSIZE_IF_NO_HUGE_PAGE;
 319         }
 320
 321         if (eal_mem_win32api_init() < 0) {
 322                 rte_eal_init_alert("Cannot access Win32 memory management");
 323                 rte_errno = ENOTSUP;
 324                 return -1;
 325         }
 326
 327         if (eal_mem_virt2iova_init() < 0) {
 328                 /* Non-fatal error if physical addresses are not required. */
 329                 RTE_LOG(WARNING, EAL, "Cannot access virt2phys driver, "
 330                         "PA will not be available\n");
 331         }
 332
 333         if (rte_eal_memzone_init() < 0) {
 334                 rte_eal_init_alert("Cannot init memzone");
 335                 rte_errno = ENODEV;
 336                 return -1;
 337         }
 338
 339         if (rte_eal_memory_init() < 0) {
 340                 rte_eal_init_alert("Cannot init memory");
 341                 rte_errno = ENOMEM;
 342                 return -1;
 343         }
 344
 345         if (rte_eal_malloc_heap_init() < 0) {
 346                 rte_eal_init_alert("Cannot init malloc heap");
 347                 rte_errno = ENODEV;
 348                 return -1;
 349         }
 350
 351         if (rte_eal_tailqs_init() < 0) {
 352                 rte_eal_init_alert("Cannot init tail queues for objects");
 353                 rte_errno = EFAULT;
 354                 return -1;
 355         }
 356
 357         if (rte_eal_intr_init() < 0) {
 358                 rte_eal_init_alert("Cannot init interrupt-handling thread");
 359                 return -1;
 360         }
 361
 362         if (rte_eal_timer_init() < 0) {
 363                 rte_eal_init_alert("Cannot init TSC timer");
 364                 rte_errno = EFAULT;
 365                 return -1;
 366         }
 367
 368         __rte_thread_init(config->main_lcore,
 369                 &lcore_config[config->main_lcore].cpuset);
 370
 371         bscan = rte_bus_scan();
 372         if (bscan < 0) {
 373                 rte_eal_init_alert("Cannot init PCI");
 374                 rte_errno = ENODEV;
 375                 return -1;
 376         }
 377
 378         RTE_LCORE_FOREACH_WORKER(i) {
 379
 380                 /*
 381                  * create communication pipes between main thread
 382                  * and children
 383                  */
 384                 if (_pipe(lcore_config[i].pipe_main2worker,
 385                         sizeof(char), _O_BINARY) < 0)
 386                         rte_panic("Cannot create pipe\n");
 387                 if (_pipe(lcore_config[i].pipe_worker2main,
 388                         sizeof(char), _O_BINARY) < 0)
 389                         rte_panic("Cannot create pipe\n");
 390
 391                 lcore_config[i].state = WAIT;
 392
 393                 /* create a thread for each lcore */
 394                 if (eal_thread_create(&lcore_config[i].thread_id) != 0)
 395                         rte_panic("Cannot create thread\n");
 396         }
 397
 398         /* Initialize services so drivers can register services during probe. */
 399         ret = rte_service_init();
 400         if (ret) {
 401                 rte_eal_init_alert("rte_service_init() failed");
 402                 rte_errno = -ret;
 403                 return -1;
 404         }
 405
 406         if (rte_bus_probe()) {
 407                 rte_eal_init_alert("Cannot probe devices");
 408                 rte_errno = ENOTSUP;
 409                 return -1;
 410         }
 411
 412         /*
 413          * Launch a dummy function on all worker lcores, so that main lcore
 414          * knows they are all ready when this function returns.
 415          */
 416         rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MAIN);
 417         rte_eal_mp_wait_lcore();
 418         return fctret;
 419 }
 420
 421 /* Don't use MinGW asprintf() to have identical code with all toolchains. */
 422 int
 423 eal_asprintf(char **buffer, const char *format, ...)
 424 {
 425         int size, ret;
 426         va_list arg;
 427
 428         va_start(arg, format);
 429         size = vsnprintf(NULL, 0, format, arg);
 430         va_end(arg);
 431         if (size < 0)
 432                 return -1;
 433         size++;
 434
 435         *buffer = malloc(size);
 436         if (*buffer == NULL)
 437                 return -1;
 438
 439         va_start(arg, format);
 440         ret = vsnprintf(*buffer, size, format, arg);
 441         va_end(arg);
 442         if (ret != size - 1) {
 443                 free(*buffer);
 444                 return -1;
 445         }
 446         return ret;
 447 }
 448
 449 int
 450 rte_vfio_container_dma_map(__rte_unused int container_fd,
 451                         __rte_unused uint64_t vaddr,
 452                         __rte_unused uint64_t iova,
 453                         __rte_unused uint64_t len)
 454 {
 455         return -1;
 456 }
 457
 458 int
 459 rte_vfio_container_dma_unmap(__rte_unused int container_fd,
 460                         __rte_unused uint64_t vaddr,
 461                         __rte_unused uint64_t iova,
 462                         __rte_unused uint64_t len)
 463 {
 464         return -1;
 465 }