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526 lines
12 KiB
526 lines
12 KiB
// 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 <[email protected]> |
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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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}; |
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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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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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/* FIXME update USBDEVFS_CONNECTINFO so it tells about high speed etc */ |
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fprintf(stderr, "%s speed\t%s\t%u\n", |
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speed(entry->speed), entry->name, entry->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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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 == 0 && !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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