535 lines
12 KiB
C
535 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* $(CROSS_COMPILE)cc -Wall -Wextra -g -lpthread -o testusb testusb.c */
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/*
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* Copyright (c) 2002 by David Brownell
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* Copyright (c) 2010 by Samsung Electronics
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* Author: Michal Nazarewicz <mina86@mina86.com>
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*/
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/*
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* This program issues ioctls to perform the tests implemented by the
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* kernel driver. It can generate a variety of transfer patterns; you
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* should make sure to test both regular streaming and mixes of
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* transfer sizes (including short transfers).
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*
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* For more information on how this can be used and on USB testing
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* refer to <URL:http://www.linux-usb.org/usbtest/>.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <ftw.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include <unistd.h>
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#include <errno.h>
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#include <limits.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <linux/usbdevice_fs.h>
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/*-------------------------------------------------------------------------*/
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#define TEST_CASES 30
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// FIXME make these public somewhere; usbdevfs.h?
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struct usbtest_param {
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// inputs
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unsigned test_num; /* 0..(TEST_CASES-1) */
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unsigned iterations;
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unsigned length;
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unsigned vary;
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unsigned sglen;
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// outputs
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struct timeval duration;
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};
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#define USBTEST_REQUEST _IOWR('U', 100, struct usbtest_param)
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/*-------------------------------------------------------------------------*/
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/* #include <linux/usb_ch9.h> */
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#define USB_DT_DEVICE 0x01
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#define USB_DT_INTERFACE 0x04
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#define USB_CLASS_PER_INTERFACE 0 /* for DeviceClass */
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#define USB_CLASS_VENDOR_SPEC 0xff
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struct usb_device_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u16 bcdUSB;
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__u8 bDeviceClass;
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__u8 bDeviceSubClass;
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__u8 bDeviceProtocol;
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__u8 bMaxPacketSize0;
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__u16 idVendor;
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__u16 idProduct;
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__u16 bcdDevice;
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__u8 iManufacturer;
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__u8 iProduct;
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__u8 iSerialNumber;
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__u8 bNumConfigurations;
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} __attribute__ ((packed));
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struct usb_interface_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bInterfaceNumber;
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__u8 bAlternateSetting;
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__u8 bNumEndpoints;
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__u8 bInterfaceClass;
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__u8 bInterfaceSubClass;
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__u8 bInterfaceProtocol;
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__u8 iInterface;
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} __attribute__ ((packed));
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enum usb_device_speed {
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USB_SPEED_UNKNOWN = 0, /* enumerating */
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USB_SPEED_LOW, USB_SPEED_FULL, /* usb 1.1 */
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USB_SPEED_HIGH, /* usb 2.0 */
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USB_SPEED_WIRELESS, /* wireless (usb 2.5) */
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USB_SPEED_SUPER, /* usb 3.0 */
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USB_SPEED_SUPER_PLUS, /* usb 3.1 */
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};
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/*-------------------------------------------------------------------------*/
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static char *speed (enum usb_device_speed s)
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{
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switch (s) {
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case USB_SPEED_UNKNOWN: return "unknown";
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case USB_SPEED_LOW: return "low";
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case USB_SPEED_FULL: return "full";
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case USB_SPEED_HIGH: return "high";
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case USB_SPEED_WIRELESS: return "wireless";
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case USB_SPEED_SUPER: return "super";
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case USB_SPEED_SUPER_PLUS: return "super-plus";
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default: return "??";
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}
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}
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struct testdev {
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struct testdev *next;
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char *name;
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pthread_t thread;
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enum usb_device_speed speed;
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unsigned ifnum : 8;
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unsigned forever : 1;
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int test;
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struct usbtest_param param;
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};
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static struct testdev *testdevs;
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static int testdev_ffs_ifnum(FILE *fd)
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{
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union {
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char buf[255];
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struct usb_interface_descriptor intf;
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} u;
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for (;;) {
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if (fread(u.buf, 1, 1, fd) != 1)
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return -1;
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if (fread(u.buf + 1, (unsigned char)u.buf[0] - 1, 1, fd) != 1)
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return -1;
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if (u.intf.bLength == sizeof u.intf
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&& u.intf.bDescriptorType == USB_DT_INTERFACE
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&& u.intf.bNumEndpoints == 2
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&& u.intf.bInterfaceClass == USB_CLASS_VENDOR_SPEC
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&& u.intf.bInterfaceSubClass == 0
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&& u.intf.bInterfaceProtocol == 0)
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return (unsigned char)u.intf.bInterfaceNumber;
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}
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}
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static int testdev_ifnum(FILE *fd)
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{
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struct usb_device_descriptor dev;
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if (fread(&dev, sizeof dev, 1, fd) != 1)
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return -1;
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if (dev.bLength != sizeof dev || dev.bDescriptorType != USB_DT_DEVICE)
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return -1;
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/* FX2 with (tweaked) bulksrc firmware */
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if (dev.idVendor == 0x0547 && dev.idProduct == 0x1002)
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return 0;
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/*----------------------------------------------------*/
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/* devices that start up using the EZ-USB default device and
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* which we can use after loading simple firmware. hotplug
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* can fxload it, and then run this test driver.
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*
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* we return false positives in two cases:
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* - the device has a "real" driver (maybe usb-serial) that
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* renumerates. the device should vanish quickly.
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* - the device doesn't have the test firmware installed.
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*/
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/* generic EZ-USB FX controller */
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if (dev.idVendor == 0x0547 && dev.idProduct == 0x2235)
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return 0;
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/* generic EZ-USB FX2 controller */
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if (dev.idVendor == 0x04b4 && dev.idProduct == 0x8613)
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return 0;
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/* CY3671 development board with EZ-USB FX */
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if (dev.idVendor == 0x0547 && dev.idProduct == 0x0080)
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return 0;
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/* Keyspan 19Qi uses an21xx (original EZ-USB) */
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if (dev.idVendor == 0x06cd && dev.idProduct == 0x010b)
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return 0;
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/*----------------------------------------------------*/
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/* "gadget zero", Linux-USB test software */
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if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4a0)
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return 0;
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/* user mode subset of that */
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if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4a4)
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return testdev_ffs_ifnum(fd);
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/* return 0; */
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/* iso version of usermode code */
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if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4a3)
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return 0;
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/* some GPL'd test firmware uses these IDs */
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if (dev.idVendor == 0xfff0 && dev.idProduct == 0xfff0)
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return 0;
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/*----------------------------------------------------*/
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/* iBOT2 high speed webcam */
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if (dev.idVendor == 0x0b62 && dev.idProduct == 0x0059)
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return 0;
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/*----------------------------------------------------*/
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/* the FunctionFS gadget can have the source/sink interface
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* anywhere. We look for an interface descriptor that match
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* what we expect. We ignore configuratiens thou. */
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if (dev.idVendor == 0x0525 && dev.idProduct == 0xa4ac
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&& (dev.bDeviceClass == USB_CLASS_PER_INTERFACE
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|| dev.bDeviceClass == USB_CLASS_VENDOR_SPEC))
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return testdev_ffs_ifnum(fd);
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return -1;
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}
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static int find_testdev(const char *name, const struct stat *sb, int flag)
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{
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FILE *fd;
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int ifnum;
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struct testdev *entry;
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(void)sb; /* unused */
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if (flag != FTW_F)
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return 0;
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fd = fopen(name, "rb");
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if (!fd) {
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perror(name);
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return 0;
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}
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ifnum = testdev_ifnum(fd);
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fclose(fd);
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if (ifnum < 0)
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return 0;
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entry = calloc(1, sizeof *entry);
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if (!entry)
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goto nomem;
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entry->name = strdup(name);
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if (!entry->name) {
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free(entry);
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nomem:
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perror("malloc");
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return 0;
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}
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entry->ifnum = ifnum;
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entry->next = testdevs;
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testdevs = entry;
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return 0;
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}
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static int
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usbdev_ioctl (int fd, int ifno, unsigned request, void *param)
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{
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struct usbdevfs_ioctl wrapper;
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wrapper.ifno = ifno;
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wrapper.ioctl_code = request;
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wrapper.data = param;
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return ioctl (fd, USBDEVFS_IOCTL, &wrapper);
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}
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static void *handle_testdev (void *arg)
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{
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struct testdev *dev = arg;
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int fd, i;
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int status;
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if ((fd = open (dev->name, O_RDWR)) < 0) {
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perror ("can't open dev file r/w");
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return 0;
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}
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status = ioctl(fd, USBDEVFS_GET_SPEED, NULL);
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if (status < 0)
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fprintf(stderr, "USBDEVFS_GET_SPEED failed %d\n", status);
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else
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dev->speed = status;
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fprintf(stderr, "%s speed\t%s\t%u\n",
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speed(dev->speed), dev->name, dev->ifnum);
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restart:
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for (i = 0; i < TEST_CASES; i++) {
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if (dev->test != -1 && dev->test != i)
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continue;
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dev->param.test_num = i;
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status = usbdev_ioctl (fd, dev->ifnum,
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USBTEST_REQUEST, &dev->param);
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if (status < 0 && errno == EOPNOTSUPP)
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continue;
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/* FIXME need a "syslog it" option for background testing */
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/* NOTE: each thread emits complete lines; no fragments! */
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if (status < 0) {
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char buf [80];
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int err = errno;
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if (strerror_r (errno, buf, sizeof buf)) {
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snprintf (buf, sizeof buf, "error %d", err);
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errno = err;
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}
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printf ("%s test %d --> %d (%s)\n",
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dev->name, i, errno, buf);
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} else
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printf ("%s test %d, %4d.%.06d secs\n", dev->name, i,
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(int) dev->param.duration.tv_sec,
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(int) dev->param.duration.tv_usec);
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fflush (stdout);
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}
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if (dev->forever)
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goto restart;
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close (fd);
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return arg;
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}
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static const char *usb_dir_find(void)
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{
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static char udev_usb_path[] = "/dev/bus/usb";
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if (access(udev_usb_path, F_OK) == 0)
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return udev_usb_path;
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return NULL;
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}
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static int parse_num(unsigned *num, const char *str)
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{
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unsigned long val;
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char *end;
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errno = 0;
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val = strtoul(str, &end, 0);
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if (errno || *end || val > UINT_MAX)
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return -1;
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*num = val;
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return 0;
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}
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int main (int argc, char **argv)
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{
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int c;
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struct testdev *entry;
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char *device;
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const char *usb_dir = NULL;
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int all = 0, forever = 0, not = 0;
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int test = -1 /* all */;
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struct usbtest_param param;
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/* pick defaults that works with all speeds, without short packets.
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*
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* Best per-frame data rates:
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* super speed,bulk 1024 * 16 * 8 = 131072
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* interrupt 1024 * 3 * 8 = 24576
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* high speed, bulk 512 * 13 * 8 = 53248
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* interrupt 1024 * 3 * 8 = 24576
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* full speed, bulk/intr 64 * 19 = 1216
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* interrupt 64 * 1 = 64
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* low speed, interrupt 8 * 1 = 8
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*/
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param.iterations = 1000;
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param.length = 1024;
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param.vary = 1024;
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param.sglen = 32;
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/* for easy use when hotplugging */
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device = getenv ("DEVICE");
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while ((c = getopt (argc, argv, "D:aA:c:g:hlns:t:v:")) != EOF)
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switch (c) {
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case 'D': /* device, if only one */
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device = optarg;
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continue;
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case 'A': /* use all devices with specified USB dir */
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usb_dir = optarg;
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/* FALL THROUGH */
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case 'a': /* use all devices */
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device = NULL;
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all = 1;
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continue;
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case 'c': /* count iterations */
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if (parse_num(¶m.iterations, optarg))
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goto usage;
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continue;
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case 'g': /* scatter/gather entries */
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if (parse_num(¶m.sglen, optarg))
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goto usage;
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continue;
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case 'l': /* loop forever */
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forever = 1;
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continue;
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case 'n': /* no test running! */
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not = 1;
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continue;
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case 's': /* size of packet */
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if (parse_num(¶m.length, optarg))
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goto usage;
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continue;
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case 't': /* run just one test */
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test = atoi (optarg);
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if (test < 0)
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goto usage;
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continue;
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case 'v': /* vary packet size by ... */
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if (parse_num(¶m.vary, optarg))
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goto usage;
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continue;
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case '?':
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case 'h':
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default:
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usage:
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fprintf (stderr,
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"usage: %s [options]\n"
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"Options:\n"
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"\t-D dev only test specific device\n"
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"\t-A usb-dir\n"
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"\t-a test all recognized devices\n"
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"\t-l loop forever(for stress test)\n"
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"\t-t testnum only run specified case\n"
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"\t-n no test running, show devices to be tested\n"
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"Case arguments:\n"
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"\t-c iterations default 1000\n"
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"\t-s transfer length default 1024\n"
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"\t-g sglen default 32\n"
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"\t-v vary default 1024\n",
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argv[0]);
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return 1;
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}
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if (optind != argc)
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goto usage;
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if (!all && !device) {
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fprintf (stderr, "must specify '-a' or '-D dev', "
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"or DEVICE=/dev/bus/usb/BBB/DDD in env\n");
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goto usage;
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}
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/* Find usb device subdirectory */
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if (!usb_dir) {
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usb_dir = usb_dir_find();
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if (!usb_dir) {
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fputs ("USB device files are missing\n", stderr);
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return -1;
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}
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}
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/* collect and list the test devices */
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if (ftw (usb_dir, find_testdev, 3) != 0) {
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fputs ("ftw failed; are USB device files missing?\n", stderr);
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return -1;
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}
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/* quit, run single test, or create test threads */
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if (!testdevs && !device) {
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fputs ("no test devices recognized\n", stderr);
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return -1;
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}
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if (not)
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return 0;
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if (testdevs && !testdevs->next && !device)
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device = testdevs->name;
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for (entry = testdevs; entry; entry = entry->next) {
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int status;
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entry->param = param;
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entry->forever = forever;
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entry->test = test;
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if (device) {
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if (strcmp (entry->name, device))
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continue;
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return handle_testdev (entry) != entry;
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}
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status = pthread_create (&entry->thread, 0, handle_testdev, entry);
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if (status)
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perror ("pthread_create");
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}
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if (device) {
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struct testdev dev;
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/* kernel can recognize test devices we don't */
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fprintf (stderr, "%s: %s may see only control tests\n",
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argv [0], device);
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memset (&dev, 0, sizeof dev);
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dev.name = device;
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dev.param = param;
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dev.forever = forever;
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dev.test = test;
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return handle_testdev (&dev) != &dev;
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}
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/* wait for tests to complete */
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for (entry = testdevs; entry; entry = entry->next) {
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void *retval;
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if (pthread_join (entry->thread, &retval))
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perror ("pthread_join");
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/* testing errors discarded! */
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}
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return 0;
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}
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