aboutsummaryrefslogtreecommitdiffstats
path: root/tools/usb/testusb.c
blob: 82d7c590c02601c17477fff14ce7643d8af69a22 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
/* $(CROSS_COMPILE)cc -Wall -Wextra -g -lpthread -o testusb testusb.c */

/*
 * Copyright (c) 2002 by David Brownell
 * Copyright (c) 2010 by Samsung Electronics
 * Author: Michal Nazarewicz <mina86@mina86.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*
 * This program issues ioctls to perform the tests implemented by the
 * kernel driver.  It can generate a variety of transfer patterns; you
 * should make sure to test both regular streaming and mixes of
 * transfer sizes (including short transfers).
 *
 * For more information on how this can be used and on USB testing
 * refer to <URL:http://www.linux-usb.org/usbtest/>.
 */

#include <stdio.h>
#include <string.h>
#include <ftw.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
#include <errno.h>
#include <limits.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#include <sys/ioctl.h>
#include <linux/usbdevice_fs.h>

/*-------------------------------------------------------------------------*/

#define	TEST_CASES	30

// FIXME make these public somewhere; usbdevfs.h?

struct usbtest_param {
	// inputs
	unsigned		test_num;	/* 0..(TEST_CASES-1) */
	unsigned		iterations;
	unsigned		length;
	unsigned		vary;
	unsigned		sglen;

	// outputs
	struct timeval		duration;
};
#define USBTEST_REQUEST	_IOWR('U', 100, struct usbtest_param)

/*-------------------------------------------------------------------------*/

/* #include <linux/usb_ch9.h> */

#define USB_DT_DEVICE			0x01
#define USB_DT_INTERFACE		0x04

#define USB_CLASS_PER_INTERFACE		0	/* for DeviceClass */
#define USB_CLASS_VENDOR_SPEC		0xff


struct usb_device_descriptor {
	__u8  bLength;
	__u8  bDescriptorType;
	__u16 bcdUSB;
	__u8  bDeviceClass;
	__u8  bDeviceSubClass;
	__u8  bDeviceProtocol;
	__u8  bMaxPacketSize0;
	__u16 idVendor;
	__u16 idProduct;
	__u16 bcdDevice;
	__u8  iManufacturer;
	__u8  iProduct;
	__u8  iSerialNumber;
	__u8  bNumConfigurations;
} __attribute__ ((packed));

struct usb_interface_descriptor {
	__u8  bLength;
	__u8  bDescriptorType;

	__u8  bInterfaceNumber;
	__u8  bAlternateSetting;
	__u8  bNumEndpoints;
	__u8  bInterfaceClass;
	__u8  bInterfaceSubClass;
	__u8  bInterfaceProtocol;
	__u8  iInterface;
} __attribute__ ((packed));

enum usb_device_speed {
	USB_SPEED_UNKNOWN = 0,			/* enumerating */
	USB_SPEED_LOW, USB_SPEED_FULL,		/* usb 1.1 */
	USB_SPEED_HIGH				/* usb 2.0 */
};

/*-------------------------------------------------------------------------*/

static char *speed (enum usb_device_speed s)
{
	switch (s) {
	case USB_SPEED_UNKNOWN:	return "unknown";
	case USB_SPEED_LOW:	return "low";
	case USB_SPEED_FULL:	return "full";
	case USB_SPEED_HIGH:	return "high";
	default:		return "??";
	}
}

struct testdev {
	struct testdev		*next;
	char			*name;
	pthread_t		thread;
	enum usb_device_speed	speed;
	unsigned		ifnum : 8;
	unsigned		forever : 1;
	int			test;

	struct usbtest_param	param;
};
static struct testdev		*testdevs;

static int testdev_ffs_ifnum(FILE *fd)
{
	union {
		char buf[255];
		struct usb_interface_descriptor intf;
	} u;

	for (;;) {
		if (fread(u.buf, 1, 1, fd) != 1)
			return -1;
		if (fread(u.buf + 1, (unsigned char)u.buf[0] - 1, 1, fd) != 1)
			return -1;

		if (u.intf.bLength == sizeof u.intf
		 && u.intf.bDescriptorType == USB_DT_INTERFACE
		 && u.intf.bNumEndpoints == 2
		 && u.intf.bInterfaceClass == USB_CLASS_VENDOR_SPEC
		 && u.intf.bInterfaceSubClass == 0
		 && u.intf.bInterfaceProtocol == 0)
			return (unsigned char)u.intf.bInterfaceNumber;
	}
}

static int testdev_ifnum(FILE *fd)
{
	struct usb_device_descriptor dev;

	if (fread(&dev, sizeof dev, 1, fd) != 1)
		return -1;

	if (dev.bLength != sizeof dev || dev.bDescriptorType != USB_DT_DEVICE)
		return -1;

	/* FX2 with (tweaked) bulksrc firmware */
	if (dev.idVendor == 0x0547 && dev.idProduct == 0x1002)
		return 0;

	/*----------------------------------------------------*/

	/* devices that start up using the EZ-USB default device and
	 * which we can use after loading simple firmware.  hotplug
	 * can fxload it, and then run this test driver.
	 *
	 * we return false positives in two cases:
	 * - the device has a "real" driver (maybe usb-serial) that
	 *   renumerates.  the device should vanish quickly.
	 * - the device doesn't have the test firmware installed.
	 */

	/* generic EZ-USB FX controller */
	if (dev.idVendor == 0x0547 && dev.idProduct == 0x2235)
		return 0;

	/* generic EZ-USB FX2 controller */
	if (dev.idVendor == 0x04b4 && dev.idProduct == 0x8613)
		return 0;

	/* CY3671 development board with EZ-USB FX */
	if (dev.idVendor == 0x0547 && dev.idProduct == 0x0080)
		return 0;

	/* Keyspan 19Qi uses an21xx (original EZ-USB) */
	if (dev.idVendor == 0x06cd && dev.idProduct == 0x010b)
		return 0;

	/*----------------------------------------------------*/

	/* "gadget zero", Linux-USB test software */
	if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4a0)
		return 0;

	/* user mode subset of that */
	if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4a4)
		return testdev_ffs_ifnum(fd);
		/* return 0; */

	/* iso version of usermode code */
	if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4a3)
		return 0;

	/* some GPL'd test firmware uses these IDs */

	if (dev.idVendor == 0xfff0 && dev.idProduct == 0xfff0)
		return 0;

	/*----------------------------------------------------*/

	/* iBOT2 high speed webcam */
	if (dev.idVendor == 0x0b62 && dev.idProduct == 0x0059)
		return 0;

	/*----------------------------------------------------*/

	/* the FunctionFS gadget can have the source/sink interface
	 * anywhere.  We look for an interface descriptor that match
	 * what we expect.  We ignore configuratiens thou. */

	if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4ac
	 && (dev.bDeviceClass == USB_CLASS_PER_INTERFACE
	  || dev.bDeviceClass == USB_CLASS_VENDOR_SPEC))
		return testdev_ffs_ifnum(fd);

	return -1;
}

static int find_testdev(const char *name, const struct stat *sb, int flag)
{
	FILE				*fd;
	int				ifnum;
	struct testdev			*entry;

	(void)sb; /* unused */

	if (flag != FTW_F)
		return 0;
	/* ignore /proc/bus/usb/{devices,drivers} */
	if (strrchr(name, '/')[1] == 'd')
		return 0;

	fd = fopen(name, "rb");
	if (!fd) {
		perror(name);
		return 0;
	}

	ifnum = testdev_ifnum(fd);
	fclose(fd);
	if (ifnum < 0)
		return 0;

	entry = calloc(1, sizeof *entry);
	if (!entry)
		goto nomem;

	entry->name = strdup(name);
	if (!entry->name) {
		free(entry);
nomem:
		perror("malloc");
		return 0;
	}

	entry->ifnum = ifnum;

	/* FIXME ask usbfs what speed; update USBDEVFS_CONNECTINFO so
	 * it tells about high speed etc */

	fprintf(stderr, "%s speed\t%s\t%u\n",
		speed(entry->speed), entry->name, entry->ifnum);

	entry->next = testdevs;
	testdevs = entry;
	return 0;
}

static int
usbdev_ioctl (int fd, int ifno, unsigned request, void *param)
{
	struct usbdevfs_ioctl	wrapper;

	wrapper.ifno = ifno;
	wrapper.ioctl_code = request;
	wrapper.data = param;

	return ioctl (fd, USBDEVFS_IOCTL, &wrapper);
}

static void *handle_testdev (void *arg)
{
	struct testdev		*dev = arg;
	int			fd, i;
	int			status;

	if ((fd = open (dev->name, O_RDWR)) < 0) {
		perror ("can't open dev file r/w");
		return 0;
	}

restart:
	for (i = 0; i < TEST_CASES; i++) {
		if (dev->test != -1 && dev->test != i)
			continue;
		dev->param.test_num = i;

		status = usbdev_ioctl (fd, dev->ifnum,
				USBTEST_REQUEST, &dev->param);
		if (status < 0 && errno == EOPNOTSUPP)
			continue;

		/* FIXME need a "syslog it" option for background testing */

		/* NOTE: each thread emits complete lines; no fragments! */
		if (status < 0) {
			char	buf [80];
			int	err = errno;

			if (strerror_r (errno, buf, sizeof buf)) {
				snprintf (buf, sizeof buf, "error %d", err);
				errno = err;
			}
			printf ("%s test %d --> %d (%s)\n",
				dev->name, i, errno, buf);
		} else
			printf ("%s test %d, %4d.%.06d secs\n", dev->name, i,
				(int) dev->param.duration.tv_sec,
				(int) dev->param.duration.tv_usec);

		fflush (stdout);
	}
	if (dev->forever)
		goto restart;

	close (fd);
	return arg;
}

static const char *usbfs_dir_find(void)
{
	static char usbfs_path_0[] = "/dev/usb/devices";
	static char usbfs_path_1[] = "/proc/bus/usb/devices";
	static char udev_usb_path[] = "/dev/bus/usb";

	static char *const usbfs_paths[] = {
		usbfs_path_0, usbfs_path_1
	};

	static char *const *
		end = usbfs_paths + sizeof usbfs_paths / sizeof *usbfs_paths;

	char *const *it = usbfs_paths;
	do {
		int fd = open(*it, O_RDONLY);
		close(fd);
		if (fd >= 0) {
			strrchr(*it, '/')[0] = '\0';
			return *it;
		}
	} while (++it != end);

	/* real device-nodes managed by udev */
	if (access(udev_usb_path, F_OK) == 0)
		return udev_usb_path;

	return NULL;
}

static int parse_num(unsigned *num, const char *str)
{
	unsigned long val;
	char *end;

	errno = 0;
	val = strtoul(str, &end, 0);
	if (errno || *end || val > UINT_MAX)
		return -1;
	*num = val;
	return 0;
}

int main (int argc, char **argv)
{

	int			c;
	struct testdev		*entry;
	char			*device;
	const char		*usbfs_dir = NULL;
	int			all = 0, forever = 0, not = 0;
	int			test = -1 /* all */;
	struct usbtest_param	param;

	/* pick defaults that works with all speeds, without short packets.
	 *
	 * Best per-frame data rates:
	 *     high speed, bulk       512 * 13 * 8 = 53248
	 *                 interrupt 1024 *  3 * 8 = 24576
	 *     full speed, bulk/intr   64 * 19     =  1216
	 *                 interrupt   64 *  1     =    64
	 *      low speed, interrupt    8 *  1     =     8
	 */
	param.iterations = 1000;
	param.length = 512;
	param.vary = 512;
	param.sglen = 32;

	/* for easy use when hotplugging */
	device = getenv ("DEVICE");

	while ((c = getopt (argc, argv, "D:aA:c:g:hns:t:v:")) != EOF)
	switch (c) {
	case 'D':	/* device, if only one */
		device = optarg;
		continue;
	case 'A':	/* use all devices with specified usbfs dir */
		usbfs_dir = optarg;
		/* FALL THROUGH */
	case 'a':	/* use all devices */
		device = NULL;
		all = 1;
		continue;
	case 'c':	/* count iterations */
		if (parse_num(&param.iterations, optarg))
			goto usage;
		continue;
	case 'g':	/* scatter/gather entries */
		if (parse_num(&param.sglen, optarg))
			goto usage;
		continue;
	case 'l':	/* loop forever */
		forever = 1;
		continue;
	case 'n':	/* no test running! */
		not = 1;
		continue;
	case 's':	/* size of packet */
		if (parse_num(&param.length, optarg))
			goto usage;
		continue;
	case 't':	/* run just one test */
		test = atoi (optarg);
		if (test < 0)
			goto usage;
		continue;
	case 'v':	/* vary packet size by ... */
		if (parse_num(&param.vary, optarg))
			goto usage;
		continue;
	case '?':
	case 'h':
	default:
usage:
		fprintf (stderr, "usage: %s [-n] [-D dev | -a | -A usbfs-dir]\n"
			"\t[-c iterations]  [-t testnum]\n"
			"\t[-s packetsize] [-g sglen] [-v vary]\n",
			argv [0]);
		return 1;
	}
	if (optind != argc)
		goto usage;
	if (!all && !device) {
		fprintf (stderr, "must specify '-a' or '-D dev', "
			"or DEVICE=/proc/bus/usb/BBB/DDD in env\n");
		goto usage;
	}

	/* Find usbfs mount point */
	if (!usbfs_dir) {
		usbfs_dir = usbfs_dir_find();
		if (!usbfs_dir) {
			fputs ("usbfs files are missing\n", stderr);
			return -1;
		}
	}

	/* collect and list the test devices */
	if (ftw (usbfs_dir, find_testdev, 3) != 0) {
		fputs ("ftw failed; is usbfs missing?\n", stderr);
		return -1;
	}

	/* quit, run single test, or create test threads */
	if (!testdevs && !device) {
		fputs ("no test devices recognized\n", stderr);
		return -1;
	}
	if (not)
		return 0;
	if (testdevs && testdevs->next == 0 && !device)
		device = testdevs->name;
	for (entry = testdevs; entry; entry = entry->next) {
		int	status;

		entry->param = param;
		entry->forever = forever;
		entry->test = test;

		if (device) {
			if (strcmp (entry->name, device))
				continue;
			return handle_testdev (entry) != entry;
		}
		status = pthread_create (&entry->thread, 0, handle_testdev, entry);
		if (status) {
			perror ("pthread_create");
			continue;
		}
	}
	if (device) {
		struct testdev		dev;

		/* kernel can recognize test devices we don't */
		fprintf (stderr, "%s: %s may see only control tests\n",
				argv [0], device);

		memset (&dev, 0, sizeof dev);
		dev.name = device;
		dev.param = param;
		dev.forever = forever;
		dev.test = test;
		return handle_testdev (&dev) != &dev;
	}

	/* wait for tests to complete */
	for (entry = testdevs; entry; entry = entry->next) {
		void	*retval;

		if (pthread_join (entry->thread, &retval))
			perror ("pthread_join");
		/* testing errors discarded! */
	}

	return 0;
}