// SPDX-License-Identifier: GPL-2.0-or-later/* $(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 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 */	USB_SPEED_WIRELESS,			/* wireless (usb 2.5) */	USB_SPEED_SUPER,			/* usb 3.0 */	USB_SPEED_SUPER_PLUS,			/* usb 3.1 */}; /*-------------------------------------------------------------------------*/ 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";	case USB_SPEED_WIRELESS:	return "wireless";	case USB_SPEED_SUPER:		return "super";	case USB_SPEED_SUPER_PLUS:	return "super-plus";	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; 	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;	entry->next = testdevs;	testdevs = entry;	return 0;} static intusbdev_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;	} 	status  =  ioctl(fd, USBDEVFS_GET_SPEED, NULL);	if (status < 0)		fprintf(stderr, "USBDEVFS_GET_SPEED failed %d\n", status);	else		dev->speed = status;	fprintf(stderr, "%s speed\t%s\t%u\n",			speed(dev->speed), dev->name, dev->ifnum); 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 *usb_dir_find(void){	static char udev_usb_path[] = "/dev/bus/usb"; 	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		*usb_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:	 *     super speed,bulk      1024 * 16 * 8 = 131072	 *                 interrupt 1024 *  3 * 8 =  24576	 *     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 = 1024;	param.vary = 1024;	param.sglen = 32; 	/* for easy use when hotplugging */	device = getenv ("DEVICE"); 	while ((c = getopt (argc, argv, "D:aA:c:g:hlns:t:v:")) != EOF)	switch (c) {	case 'D':	/* device, if only one */		device = optarg;		continue;	case 'A':	/* use all devices with specified USB dir */		usb_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 [options]\n"			"Options:\n"			"\t-D dev		only test specific device\n"			"\t-A usb-dir\n"			"\t-a		test all recognized devices\n"			"\t-l		loop forever(for stress test)\n"			"\t-t testnum	only run specified case\n"			"\t-n		no test running, show devices to be tested\n"			"Case arguments:\n"			"\t-c iterations		default 1000\n"			"\t-s transfer length	default 1024\n"			"\t-g sglen		default 32\n"			"\t-v vary			default 1024\n",			argv[0]);		return 1;	}	if (optind != argc)		goto usage;	if (!all && !device) {		fprintf (stderr, "must specify '-a' or '-D dev', "			"or DEVICE=/dev/bus/usb/BBB/DDD in env\n");		goto usage;	} 	/* Find usb device subdirectory */	if (!usb_dir) {		usb_dir = usb_dir_find();		if (!usb_dir) {			fputs ("USB device files are missing\n", stderr);			return -1;		}	} 	/* collect and list the test devices */	if (ftw (usb_dir, find_testdev, 3) != 0) {		fputs ("ftw failed; are USB device files 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 && !device)		device = testdevs->name;	for (entry = testdevs; entry; entry = entry->next) {		int	status; 		entry->param = param;		entry->forever = forever;		entry->test = test; 		if (device) {

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