diff options
Diffstat (limited to 'kernel/tools/usb/testusb.c')
| -rw-r--r-- | kernel/tools/usb/testusb.c | 537 |
1 files changed, 537 insertions, 0 deletions
diff --git a/kernel/tools/usb/testusb.c b/kernel/tools/usb/testusb.c new file mode 100644 index 000000000..879f9870a --- /dev/null +++ b/kernel/tools/usb/testusb.c @@ -0,0 +1,537 @@ +/* $(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; + + 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 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 *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: + * 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: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(¶m.iterations, optarg)) + goto usage; + continue; + case 'g': /* scatter/gather entries */ + if (parse_num(¶m.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(¶m.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(¶m.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 packetsize default 512\n" + "\t-g sglen default 32\n" + "\t-v vary default 512\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 == 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"); + } + 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; +} |