1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* $(CROSS_COMPILE)cc -Wall -Wextra -g -lpthread -o testusb testusb.c */
5 * Copyright (c) 2002 by David Brownell
6 * Copyright (c) 2010 by Samsung Electronics
7 * Author: Michal Nazarewicz <mina86@mina86.com>
11 * This program issues ioctls to perform the tests implemented by the
12 * kernel driver. It can generate a variety of transfer patterns; you
13 * should make sure to test both regular streaming and mixes of
14 * transfer sizes (including short transfers).
16 * For more information on how this can be used and on USB testing
17 * refer to <URL:http://www.linux-usb.org/usbtest/>.
29 #include <sys/types.h>
33 #include <sys/ioctl.h>
34 #include <linux/usbdevice_fs.h>
36 /*-------------------------------------------------------------------------*/
40 // FIXME make these public somewhere; usbdevfs.h?
42 struct usbtest_param {
44 unsigned test_num; /* 0..(TEST_CASES-1) */
51 struct timeval duration;
53 #define USBTEST_REQUEST _IOWR('U', 100, struct usbtest_param)
55 /*-------------------------------------------------------------------------*/
57 /* #include <linux/usb_ch9.h> */
59 #define USB_DT_DEVICE 0x01
60 #define USB_DT_INTERFACE 0x04
62 #define USB_CLASS_PER_INTERFACE 0 /* for DeviceClass */
63 #define USB_CLASS_VENDOR_SPEC 0xff
66 struct usb_device_descriptor {
80 __u8 bNumConfigurations;
81 } __attribute__ ((packed));
83 struct usb_interface_descriptor {
87 __u8 bInterfaceNumber;
88 __u8 bAlternateSetting;
91 __u8 bInterfaceSubClass;
92 __u8 bInterfaceProtocol;
94 } __attribute__ ((packed));
96 enum usb_device_speed {
97 USB_SPEED_UNKNOWN = 0, /* enumerating */
98 USB_SPEED_LOW, USB_SPEED_FULL, /* usb 1.1 */
99 USB_SPEED_HIGH, /* usb 2.0 */
100 USB_SPEED_WIRELESS, /* wireless (usb 2.5) */
101 USB_SPEED_SUPER, /* usb 3.0 */
102 USB_SPEED_SUPER_PLUS, /* usb 3.1 */
105 /*-------------------------------------------------------------------------*/
107 static char *speed (enum usb_device_speed s)
110 case USB_SPEED_UNKNOWN: return "unknown";
111 case USB_SPEED_LOW: return "low";
112 case USB_SPEED_FULL: return "full";
113 case USB_SPEED_HIGH: return "high";
114 case USB_SPEED_WIRELESS: return "wireless";
115 case USB_SPEED_SUPER: return "super";
116 case USB_SPEED_SUPER_PLUS: return "super-plus";
117 default: return "??";
122 struct testdev *next;
125 enum usb_device_speed speed;
127 unsigned forever : 1;
130 struct usbtest_param param;
132 static struct testdev *testdevs;
134 static int testdev_ffs_ifnum(FILE *fd)
138 struct usb_interface_descriptor intf;
142 if (fread(u.buf, 1, 1, fd) != 1)
144 if (fread(u.buf + 1, (unsigned char)u.buf[0] - 1, 1, fd) != 1)
147 if (u.intf.bLength == sizeof u.intf
148 && u.intf.bDescriptorType == USB_DT_INTERFACE
149 && u.intf.bNumEndpoints == 2
150 && u.intf.bInterfaceClass == USB_CLASS_VENDOR_SPEC
151 && u.intf.bInterfaceSubClass == 0
152 && u.intf.bInterfaceProtocol == 0)
153 return (unsigned char)u.intf.bInterfaceNumber;
157 static int testdev_ifnum(FILE *fd)
159 struct usb_device_descriptor dev;
161 if (fread(&dev, sizeof dev, 1, fd) != 1)
164 if (dev.bLength != sizeof dev || dev.bDescriptorType != USB_DT_DEVICE)
167 /* FX2 with (tweaked) bulksrc firmware */
168 if (dev.idVendor == 0x0547 && dev.idProduct == 0x1002)
171 /*----------------------------------------------------*/
173 /* devices that start up using the EZ-USB default device and
174 * which we can use after loading simple firmware. hotplug
175 * can fxload it, and then run this test driver.
177 * we return false positives in two cases:
178 * - the device has a "real" driver (maybe usb-serial) that
179 * renumerates. the device should vanish quickly.
180 * - the device doesn't have the test firmware installed.
183 /* generic EZ-USB FX controller */
184 if (dev.idVendor == 0x0547 && dev.idProduct == 0x2235)
187 /* generic EZ-USB FX2 controller */
188 if (dev.idVendor == 0x04b4 && dev.idProduct == 0x8613)
191 /* CY3671 development board with EZ-USB FX */
192 if (dev.idVendor == 0x0547 && dev.idProduct == 0x0080)
195 /* Keyspan 19Qi uses an21xx (original EZ-USB) */
196 if (dev.idVendor == 0x06cd && dev.idProduct == 0x010b)
199 /*----------------------------------------------------*/
201 /* "gadget zero", Linux-USB test software */
202 if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4a0)
205 /* user mode subset of that */
206 if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4a4)
207 return testdev_ffs_ifnum(fd);
210 /* iso version of usermode code */
211 if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4a3)
214 /* some GPL'd test firmware uses these IDs */
216 if (dev.idVendor == 0xfff0 && dev.idProduct == 0xfff0)
219 /*----------------------------------------------------*/
221 /* iBOT2 high speed webcam */
222 if (dev.idVendor == 0x0b62 && dev.idProduct == 0x0059)
225 /*----------------------------------------------------*/
227 /* the FunctionFS gadget can have the source/sink interface
228 * anywhere. We look for an interface descriptor that match
229 * what we expect. We ignore configuratiens thou. */
231 if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4ac
232 && (dev.bDeviceClass == USB_CLASS_PER_INTERFACE
233 || dev.bDeviceClass == USB_CLASS_VENDOR_SPEC))
234 return testdev_ffs_ifnum(fd);
239 static int find_testdev(const char *name, const struct stat *sb, int flag)
243 struct testdev *entry;
245 (void)sb; /* unused */
250 fd = fopen(name, "rb");
256 ifnum = testdev_ifnum(fd);
261 entry = calloc(1, sizeof *entry);
265 entry->name = strdup(name);
273 entry->ifnum = ifnum;
274 entry->next = testdevs;
280 usbdev_ioctl (int fd, int ifno, unsigned request, void *param)
282 struct usbdevfs_ioctl wrapper;
285 wrapper.ioctl_code = request;
286 wrapper.data = param;
288 return ioctl (fd, USBDEVFS_IOCTL, &wrapper);
291 static void *handle_testdev (void *arg)
293 struct testdev *dev = arg;
297 if ((fd = open (dev->name, O_RDWR)) < 0) {
298 perror ("can't open dev file r/w");
302 status = ioctl(fd, USBDEVFS_GET_SPEED, NULL);
304 fprintf(stderr, "USBDEVFS_GET_SPEED failed %d\n", status);
307 fprintf(stderr, "%s speed\t%s\t%u\n",
308 speed(dev->speed), dev->name, dev->ifnum);
311 for (i = 0; i < TEST_CASES; i++) {
312 if (dev->test != -1 && dev->test != i)
314 dev->param.test_num = i;
316 status = usbdev_ioctl (fd, dev->ifnum,
317 USBTEST_REQUEST, &dev->param);
318 if (status < 0 && errno == EOPNOTSUPP)
321 /* FIXME need a "syslog it" option for background testing */
323 /* NOTE: each thread emits complete lines; no fragments! */
328 if (strerror_r (errno, buf, sizeof buf)) {
329 snprintf (buf, sizeof buf, "error %d", err);
332 printf ("%s test %d --> %d (%s)\n",
333 dev->name, i, errno, buf);
335 printf ("%s test %d, %4d.%.06d secs\n", dev->name, i,
336 (int) dev->param.duration.tv_sec,
337 (int) dev->param.duration.tv_usec);
348 static const char *usb_dir_find(void)
350 static char udev_usb_path[] = "/dev/bus/usb";
352 if (access(udev_usb_path, F_OK) == 0)
353 return udev_usb_path;
358 static int parse_num(unsigned *num, const char *str)
364 val = strtoul(str, &end, 0);
365 if (errno || *end || val > UINT_MAX)
371 int main (int argc, char **argv)
375 struct testdev *entry;
377 const char *usb_dir = NULL;
378 int all = 0, forever = 0, not = 0;
379 int test = -1 /* all */;
380 struct usbtest_param param;
382 /* pick defaults that works with all speeds, without short packets.
384 * Best per-frame data rates:
385 * super speed,bulk 1024 * 16 * 8 = 131072
386 * interrupt 1024 * 3 * 8 = 24576
387 * high speed, bulk 512 * 13 * 8 = 53248
388 * interrupt 1024 * 3 * 8 = 24576
389 * full speed, bulk/intr 64 * 19 = 1216
390 * interrupt 64 * 1 = 64
391 * low speed, interrupt 8 * 1 = 8
393 param.iterations = 1000;
398 /* for easy use when hotplugging */
399 device = getenv ("DEVICE");
401 while ((c = getopt (argc, argv, "D:aA:c:g:hlns:t:v:")) != EOF)
403 case 'D': /* device, if only one */
406 case 'A': /* use all devices with specified USB dir */
409 case 'a': /* use all devices */
413 case 'c': /* count iterations */
414 if (parse_num(¶m.iterations, optarg))
417 case 'g': /* scatter/gather entries */
418 if (parse_num(¶m.sglen, optarg))
421 case 'l': /* loop forever */
424 case 'n': /* no test running! */
427 case 's': /* size of packet */
428 if (parse_num(¶m.length, optarg))
431 case 't': /* run just one test */
432 test = atoi (optarg);
436 case 'v': /* vary packet size by ... */
437 if (parse_num(¶m.vary, optarg))
445 "usage: %s [options]\n"
447 "\t-D dev only test specific device\n"
449 "\t-a test all recognized devices\n"
450 "\t-l loop forever(for stress test)\n"
451 "\t-t testnum only run specified case\n"
452 "\t-n no test running, show devices to be tested\n"
454 "\t-c iterations default 1000\n"
455 "\t-s transfer length default 1024\n"
456 "\t-g sglen default 32\n"
457 "\t-v vary default 1024\n",
463 if (!all && !device) {
464 fprintf (stderr, "must specify '-a' or '-D dev', "
465 "or DEVICE=/dev/bus/usb/BBB/DDD in env\n");
469 /* Find usb device subdirectory */
471 usb_dir = usb_dir_find();
473 fputs ("USB device files are missing\n", stderr);
478 /* collect and list the test devices */
479 if (ftw (usb_dir, find_testdev, 3) != 0) {
480 fputs ("ftw failed; are USB device files missing?\n", stderr);
484 /* quit, run single test, or create test threads */
485 if (!testdevs && !device) {
486 fputs ("no test devices recognized\n", stderr);
491 if (testdevs && !testdevs->next && !device)
492 device = testdevs->name;
493 for (entry = testdevs; entry; entry = entry->next) {
496 entry->param = param;
497 entry->forever = forever;
501 if (strcmp (entry->name, device))
503 return handle_testdev (entry) != entry;
505 status = pthread_create (&entry->thread, 0, handle_testdev, entry);
507 perror ("pthread_create");
512 /* kernel can recognize test devices we don't */
513 fprintf (stderr, "%s: %s may see only control tests\n",
516 memset (&dev, 0, sizeof dev);
519 dev.forever = forever;
521 return handle_testdev (&dev) != &dev;
524 /* wait for tests to complete */
525 for (entry = testdevs; entry; entry = entry->next) {
528 if (pthread_join (entry->thread, &retval))
529 perror ("pthread_join");
530 /* testing errors discarded! */