1 /* $(CROSS_COMPILE)cc -Wall -Wextra -g -lpthread -o testusb testusb.c */ 2 3 /* 4 * Copyright (c) 2002 by David Brownell 5 * Copyright (c) 2010 by Samsung Electronics 6 * Author: Michal Nazarewicz <mina86@mina86.com> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2 of the License, or (at your 11 * option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16 * for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software Foundation, 20 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 21 */ 22 23 /* 24 * This program issues ioctls to perform the tests implemented by the 25 * kernel driver. It can generate a variety of transfer patterns; you 26 * should make sure to test both regular streaming and mixes of 27 * transfer sizes (including short transfers). 28 * 29 * For more information on how this can be used and on USB testing 30 * refer to <URL:http://www.linux-usb.org/usbtest/>. 31 */ 32 33 #include <stdio.h> 34 #include <string.h> 35 #include <ftw.h> 36 #include <stdlib.h> 37 #include <pthread.h> 38 #include <unistd.h> 39 #include <errno.h> 40 #include <limits.h> 41 42 #include <sys/types.h> 43 #include <sys/stat.h> 44 #include <fcntl.h> 45 46 #include <sys/ioctl.h> 47 #include <linux/usbdevice_fs.h> 48 49 /*-------------------------------------------------------------------------*/ 50 51 #define TEST_CASES 30 52 53 // FIXME make these public somewhere; usbdevfs.h? 54 55 struct usbtest_param { 56 // inputs 57 unsigned test_num; /* 0..(TEST_CASES-1) */ 58 unsigned iterations; 59 unsigned length; 60 unsigned vary; 61 unsigned sglen; 62 63 // outputs 64 struct timeval duration; 65 }; 66 #define USBTEST_REQUEST _IOWR('U', 100, struct usbtest_param) 67 68 /*-------------------------------------------------------------------------*/ 69 70 /* #include <linux/usb_ch9.h> */ 71 72 #define USB_DT_DEVICE 0x01 73 #define USB_DT_INTERFACE 0x04 74 75 #define USB_CLASS_PER_INTERFACE 0 /* for DeviceClass */ 76 #define USB_CLASS_VENDOR_SPEC 0xff 77 78 79 struct usb_device_descriptor { 80 __u8 bLength; 81 __u8 bDescriptorType; 82 __u16 bcdUSB; 83 __u8 bDeviceClass; 84 __u8 bDeviceSubClass; 85 __u8 bDeviceProtocol; 86 __u8 bMaxPacketSize0; 87 __u16 idVendor; 88 __u16 idProduct; 89 __u16 bcdDevice; 90 __u8 iManufacturer; 91 __u8 iProduct; 92 __u8 iSerialNumber; 93 __u8 bNumConfigurations; 94 } __attribute__ ((packed)); 95 96 struct usb_interface_descriptor { 97 __u8 bLength; 98 __u8 bDescriptorType; 99 100 __u8 bInterfaceNumber; 101 __u8 bAlternateSetting; 102 __u8 bNumEndpoints; 103 __u8 bInterfaceClass; 104 __u8 bInterfaceSubClass; 105 __u8 bInterfaceProtocol; 106 __u8 iInterface; 107 } __attribute__ ((packed)); 108 109 enum usb_device_speed { 110 USB_SPEED_UNKNOWN = 0, /* enumerating */ 111 USB_SPEED_LOW, USB_SPEED_FULL, /* usb 1.1 */ 112 USB_SPEED_HIGH /* usb 2.0 */ 113 }; 114 115 /*-------------------------------------------------------------------------*/ 116 117 static char *speed (enum usb_device_speed s) 118 { 119 switch (s) { 120 case USB_SPEED_UNKNOWN: return "unknown"; 121 case USB_SPEED_LOW: return "low"; 122 case USB_SPEED_FULL: return "full"; 123 case USB_SPEED_HIGH: return "high"; 124 default: return "??"; 125 } 126 } 127 128 struct testdev { 129 struct testdev *next; 130 char *name; 131 pthread_t thread; 132 enum usb_device_speed speed; 133 unsigned ifnum : 8; 134 unsigned forever : 1; 135 int test; 136 137 struct usbtest_param param; 138 }; 139 static struct testdev *testdevs; 140 141 static int testdev_ffs_ifnum(FILE *fd) 142 { 143 union { 144 char buf[255]; 145 struct usb_interface_descriptor intf; 146 } u; 147 148 for (;;) { 149 if (fread(u.buf, 1, 1, fd) != 1) 150 return -1; 151 if (fread(u.buf + 1, (unsigned char)u.buf[0] - 1, 1, fd) != 1) 152 return -1; 153 154 if (u.intf.bLength == sizeof u.intf 155 && u.intf.bDescriptorType == USB_DT_INTERFACE 156 && u.intf.bNumEndpoints == 2 157 && u.intf.bInterfaceClass == USB_CLASS_VENDOR_SPEC 158 && u.intf.bInterfaceSubClass == 0 159 && u.intf.bInterfaceProtocol == 0) 160 return (unsigned char)u.intf.bInterfaceNumber; 161 } 162 } 163 164 static int testdev_ifnum(FILE *fd) 165 { 166 struct usb_device_descriptor dev; 167 168 if (fread(&dev, sizeof dev, 1, fd) != 1) 169 return -1; 170 171 if (dev.bLength != sizeof dev || dev.bDescriptorType != USB_DT_DEVICE) 172 return -1; 173 174 /* FX2 with (tweaked) bulksrc firmware */ 175 if (dev.idVendor == 0x0547 && dev.idProduct == 0x1002) 176 return 0; 177 178 /*----------------------------------------------------*/ 179 180 /* devices that start up using the EZ-USB default device and 181 * which we can use after loading simple firmware. hotplug 182 * can fxload it, and then run this test driver. 183 * 184 * we return false positives in two cases: 185 * - the device has a "real" driver (maybe usb-serial) that 186 * renumerates. the device should vanish quickly. 187 * - the device doesn't have the test firmware installed. 188 */ 189 190 /* generic EZ-USB FX controller */ 191 if (dev.idVendor == 0x0547 && dev.idProduct == 0x2235) 192 return 0; 193 194 /* generic EZ-USB FX2 controller */ 195 if (dev.idVendor == 0x04b4 && dev.idProduct == 0x8613) 196 return 0; 197 198 /* CY3671 development board with EZ-USB FX */ 199 if (dev.idVendor == 0x0547 && dev.idProduct == 0x0080) 200 return 0; 201 202 /* Keyspan 19Qi uses an21xx (original EZ-USB) */ 203 if (dev.idVendor == 0x06cd && dev.idProduct == 0x010b) 204 return 0; 205 206 /*----------------------------------------------------*/ 207 208 /* "gadget zero", Linux-USB test software */ 209 if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4a0) 210 return 0; 211 212 /* user mode subset of that */ 213 if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4a4) 214 return testdev_ffs_ifnum(fd); 215 /* return 0; */ 216 217 /* iso version of usermode code */ 218 if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4a3) 219 return 0; 220 221 /* some GPL'd test firmware uses these IDs */ 222 223 if (dev.idVendor == 0xfff0 && dev.idProduct == 0xfff0) 224 return 0; 225 226 /*----------------------------------------------------*/ 227 228 /* iBOT2 high speed webcam */ 229 if (dev.idVendor == 0x0b62 && dev.idProduct == 0x0059) 230 return 0; 231 232 /*----------------------------------------------------*/ 233 234 /* the FunctionFS gadget can have the source/sink interface 235 * anywhere. We look for an interface descriptor that match 236 * what we expect. We ignore configuratiens thou. */ 237 238 if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4ac 239 && (dev.bDeviceClass == USB_CLASS_PER_INTERFACE 240 || dev.bDeviceClass == USB_CLASS_VENDOR_SPEC)) 241 return testdev_ffs_ifnum(fd); 242 243 return -1; 244 } 245 246 static int find_testdev(const char *name, const struct stat *sb, int flag) 247 { 248 FILE *fd; 249 int ifnum; 250 struct testdev *entry; 251 252 (void)sb; /* unused */ 253 254 if (flag != FTW_F) 255 return 0; 256 257 fd = fopen(name, "rb"); 258 if (!fd) { 259 perror(name); 260 return 0; 261 } 262 263 ifnum = testdev_ifnum(fd); 264 fclose(fd); 265 if (ifnum < 0) 266 return 0; 267 268 entry = calloc(1, sizeof *entry); 269 if (!entry) 270 goto nomem; 271 272 entry->name = strdup(name); 273 if (!entry->name) { 274 free(entry); 275 nomem: 276 perror("malloc"); 277 return 0; 278 } 279 280 entry->ifnum = ifnum; 281 282 /* FIXME update USBDEVFS_CONNECTINFO so it tells about high speed etc */ 283 284 fprintf(stderr, "%s speed\t%s\t%u\n", 285 speed(entry->speed), entry->name, entry->ifnum); 286 287 entry->next = testdevs; 288 testdevs = entry; 289 return 0; 290 } 291 292 static int 293 usbdev_ioctl (int fd, int ifno, unsigned request, void *param) 294 { 295 struct usbdevfs_ioctl wrapper; 296 297 wrapper.ifno = ifno; 298 wrapper.ioctl_code = request; 299 wrapper.data = param; 300 301 return ioctl (fd, USBDEVFS_IOCTL, &wrapper); 302 } 303 304 static void *handle_testdev (void *arg) 305 { 306 struct testdev *dev = arg; 307 int fd, i; 308 int status; 309 310 if ((fd = open (dev->name, O_RDWR)) < 0) { 311 perror ("can't open dev file r/w"); 312 return 0; 313 } 314 315 restart: 316 for (i = 0; i < TEST_CASES; i++) { 317 if (dev->test != -1 && dev->test != i) 318 continue; 319 dev->param.test_num = i; 320 321 status = usbdev_ioctl (fd, dev->ifnum, 322 USBTEST_REQUEST, &dev->param); 323 if (status < 0 && errno == EOPNOTSUPP) 324 continue; 325 326 /* FIXME need a "syslog it" option for background testing */ 327 328 /* NOTE: each thread emits complete lines; no fragments! */ 329 if (status < 0) { 330 char buf [80]; 331 int err = errno; 332 333 if (strerror_r (errno, buf, sizeof buf)) { 334 snprintf (buf, sizeof buf, "error %d", err); 335 errno = err; 336 } 337 printf ("%s test %d --> %d (%s)\n", 338 dev->name, i, errno, buf); 339 } else 340 printf ("%s test %d, %4d.%.06d secs\n", dev->name, i, 341 (int) dev->param.duration.tv_sec, 342 (int) dev->param.duration.tv_usec); 343 344 fflush (stdout); 345 } 346 if (dev->forever) 347 goto restart; 348 349 close (fd); 350 return arg; 351 } 352 353 static const char *usb_dir_find(void) 354 { 355 static char udev_usb_path[] = "/dev/bus/usb"; 356 357 if (access(udev_usb_path, F_OK) == 0) 358 return udev_usb_path; 359 360 return NULL; 361 } 362 363 static int parse_num(unsigned *num, const char *str) 364 { 365 unsigned long val; 366 char *end; 367 368 errno = 0; 369 val = strtoul(str, &end, 0); 370 if (errno || *end || val > UINT_MAX) 371 return -1; 372 *num = val; 373 return 0; 374 } 375 376 int main (int argc, char **argv) 377 { 378 379 int c; 380 struct testdev *entry; 381 char *device; 382 const char *usb_dir = NULL; 383 int all = 0, forever = 0, not = 0; 384 int test = -1 /* all */; 385 struct usbtest_param param; 386 387 /* pick defaults that works with all speeds, without short packets. 388 * 389 * Best per-frame data rates: 390 * high speed, bulk 512 * 13 * 8 = 53248 391 * interrupt 1024 * 3 * 8 = 24576 392 * full speed, bulk/intr 64 * 19 = 1216 393 * interrupt 64 * 1 = 64 394 * low speed, interrupt 8 * 1 = 8 395 */ 396 param.iterations = 1000; 397 param.length = 1024; 398 param.vary = 512; 399 param.sglen = 32; 400 401 /* for easy use when hotplugging */ 402 device = getenv ("DEVICE"); 403 404 while ((c = getopt (argc, argv, "D:aA:c:g:hlns:t:v:")) != EOF) 405 switch (c) { 406 case 'D': /* device, if only one */ 407 device = optarg; 408 continue; 409 case 'A': /* use all devices with specified USB dir */ 410 usb_dir = optarg; 411 /* FALL THROUGH */ 412 case 'a': /* use all devices */ 413 device = NULL; 414 all = 1; 415 continue; 416 case 'c': /* count iterations */ 417 if (parse_num(¶m.iterations, optarg)) 418 goto usage; 419 continue; 420 case 'g': /* scatter/gather entries */ 421 if (parse_num(¶m.sglen, optarg)) 422 goto usage; 423 continue; 424 case 'l': /* loop forever */ 425 forever = 1; 426 continue; 427 case 'n': /* no test running! */ 428 not = 1; 429 continue; 430 case 's': /* size of packet */ 431 if (parse_num(¶m.length, optarg)) 432 goto usage; 433 continue; 434 case 't': /* run just one test */ 435 test = atoi (optarg); 436 if (test < 0) 437 goto usage; 438 continue; 439 case 'v': /* vary packet size by ... */ 440 if (parse_num(¶m.vary, optarg)) 441 goto usage; 442 continue; 443 case '?': 444 case 'h': 445 default: 446 usage: 447 fprintf (stderr, 448 "usage: %s [options]\n" 449 "Options:\n" 450 "\t-D dev only test specific device\n" 451 "\t-A usb-dir\n" 452 "\t-a test all recognized devices\n" 453 "\t-l loop forever(for stress test)\n" 454 "\t-t testnum only run specified case\n" 455 "\t-n no test running, show devices to be tested\n" 456 "Case arguments:\n" 457 "\t-c iterations default 1000\n" 458 "\t-s transfer length default 1024\n" 459 "\t-g sglen default 32\n" 460 "\t-v vary default 512\n", 461 argv[0]); 462 return 1; 463 } 464 if (optind != argc) 465 goto usage; 466 if (!all && !device) { 467 fprintf (stderr, "must specify '-a' or '-D dev', " 468 "or DEVICE=/dev/bus/usb/BBB/DDD in env\n"); 469 goto usage; 470 } 471 472 /* Find usb device subdirectory */ 473 if (!usb_dir) { 474 usb_dir = usb_dir_find(); 475 if (!usb_dir) { 476 fputs ("USB device files are missing\n", stderr); 477 return -1; 478 } 479 } 480 481 /* collect and list the test devices */ 482 if (ftw (usb_dir, find_testdev, 3) != 0) { 483 fputs ("ftw failed; are USB device files missing?\n", stderr); 484 return -1; 485 } 486 487 /* quit, run single test, or create test threads */ 488 if (!testdevs && !device) { 489 fputs ("no test devices recognized\n", stderr); 490 return -1; 491 } 492 if (not) 493 return 0; 494 if (testdevs && testdevs->next == 0 && !device) 495 device = testdevs->name; 496 for (entry = testdevs; entry; entry = entry->next) { 497 int status; 498 499 entry->param = param; 500 entry->forever = forever; 501 entry->test = test; 502 503 if (device) { 504 if (strcmp (entry->name, device)) 505 continue; 506 return handle_testdev (entry) != entry; 507 } 508 status = pthread_create (&entry->thread, 0, handle_testdev, entry); 509 if (status) 510 perror ("pthread_create"); 511 } 512 if (device) { 513 struct testdev dev; 514 515 /* kernel can recognize test devices we don't */ 516 fprintf (stderr, "%s: %s may see only control tests\n", 517 argv [0], device); 518 519 memset (&dev, 0, sizeof dev); 520 dev.name = device; 521 dev.param = param; 522 dev.forever = forever; 523 dev.test = test; 524 return handle_testdev (&dev) != &dev; 525 } 526 527 /* wait for tests to complete */ 528 for (entry = testdevs; entry; entry = entry->next) { 529 void *retval; 530 531 if (pthread_join (entry->thread, &retval)) 532 perror ("pthread_join"); 533 /* testing errors discarded! */ 534 } 535 536 return 0; 537 } 538