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lsusb.c
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/*****************************************************************************/
/*
* lsusb.c -- lspci like utility for the USB bus
*
* Copyright (C) 1999-2001, 2003
* Thomas Sailer ([email protected])
* Copyright (C) 2003-2005 David Brownell
*
* 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.
*/
/*****************************************************************************/
#include "config.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdarg.h>
#include <byteswap.h>
#include <libusb.h>
#include "names.h"
#include "devtree.h"
#include "usbmisc.h"
#include <getopt.h>
#if (__BYTE_ORDER == __LITTLE_ENDIAN)
#define le16_to_cpu(x) (x)
#elif (__BYTE_ORDER == __BIG_ENDIAN)
#define le16_to_cpu(x) bswap_16(x)
#else
#error missing BYTE_ORDER
#endif
/* from USB 2.0 spec and updates */
#define USB_DT_DEVICE_QUALIFIER 0x06
#define USB_DT_OTHER_SPEED_CONFIG 0x07
#define USB_DT_OTG 0x09
#define USB_DT_DEBUG 0x0a
#define USB_DT_INTERFACE_ASSOCIATION 0x0b
#define USB_DT_SECURITY 0x0c
#define USB_DT_KEY 0x0d
#define USB_DT_ENCRYPTION_TYPE 0x0e
#define USB_DT_BOS 0x0f
#define USB_DT_DEVICE_CAPABILITY 0x10
#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
#define USB_DT_WIRE_ADAPTER 0x21
#define USB_DT_RPIPE 0x22
#define USB_DT_RC_INTERFACE 0x23
#define USB_DT_SS_ENDPOINT_COMP 0x30
/* Conventional codes for class-specific descriptors. The convention is
* defined in the USB "Common Class" Spec (3.11). Individual class specs
* are authoritative for their usage, not the "common class" writeup.
*/
#define USB_DT_CS_DEVICE (LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_DT_DEVICE)
#define USB_DT_CS_CONFIG (LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_DT_CONFIG)
#define USB_DT_CS_STRING (LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_DT_STRING)
#define USB_DT_CS_INTERFACE (LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_DT_INTERFACE)
#define USB_DT_CS_ENDPOINT (LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_DT_ENDPOINT)
#ifndef USB_CLASS_CCID
#define USB_CLASS_CCID 0x0b
#endif
#ifndef USB_CLASS_VIDEO
#define USB_CLASS_VIDEO 0x0e
#endif
#ifndef USB_CLASS_APPLICATION
#define USB_CLASS_APPLICATION 0xfe
#endif
#define VERBLEVEL_DEFAULT 0 /* 0 gives lspci behaviour; 1, lsusb-0.9 */
#define CTRL_RETRIES 2
#define CTRL_TIMEOUT (5*1000) /* milliseconds */
#define HUB_STATUS_BYTELEN 3 /* max 3 bytes status = hub + 23 ports */
extern int lsusb_t(void);
static const char *procbususb = "/proc/bus/usb";
static unsigned int verblevel = VERBLEVEL_DEFAULT;
static int do_report_desc = 1;
static const char *encryption_type[] = { "UNSECURE", "WIRED", "CCM_1", "RSA_1", "RESERVED" };
static void dump_interface(struct libusb_device_handle *dev, struct libusb_interface *interface);
static void dump_endpoint(struct libusb_device_handle *dev, struct libusb_interface_descriptor *interface, struct libusb_endpoint_descriptor *endpoint);
static void dump_audiocontrol_interface(struct libusb_device_handle *dev, unsigned char *buf);
static void dump_audiostreaming_interface(unsigned char *buf);
static void dump_midistreaming_interface(struct libusb_device_handle *dev, unsigned char *buf);
static void dump_videocontrol_interface(struct libusb_device_handle *dev, unsigned char *buf);
static void dump_videostreaming_interface(unsigned char *buf);
static void dump_dfu_interface(unsigned char *buf);
static char *dump_comm_descriptor(struct libusb_device_handle *dev, unsigned char *buf, char *indent);
static void dump_hid_device(struct libusb_device_handle *dev, struct libusb_interface_descriptor *interface, unsigned char *buf);
static void dump_audiostreaming_endpoint(unsigned char *buf);
static void dump_midistreaming_endpoint(unsigned char *buf);
static void dump_hub(char *prefix, unsigned char *p, int has_tt);
static void dump_ccid_device(unsigned char *buf);
/* ---------------------------------------------------------------------- */
static unsigned int convert_le_u32 (const unsigned char *buf)
{
return buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
}
/* ---------------------------------------------------------------------- */
/* workaround libusb API goofs: "byte" should never be sign extended;
* using "char" is trouble. Likewise, sizes should never be negative.
*/
static inline int typesafe_control_msg(libusb_device_handle *dev,
unsigned char requesttype, unsigned char request,
int value, int idx,
unsigned char *bytes, int size, unsigned int timeout)
{
int r;
r = libusb_control_transfer(dev, requesttype & 0xff, request & 0xff, value & 0xffff, idx
& 0xffff, (unsigned char *) bytes, size & 0xffff, timeout);
return r;
}
#define usb_control_msg typesafe_control_msg
/* ---------------------------------------------------------------------- */
int lprintf(unsigned int vl, const char *format, ...)
{
va_list ap;
int r;
if (vl > verblevel)
return 0;
va_start(ap, format);
r = vfprintf(stderr, format, ap);
va_end(ap);
if (!vl)
exit(1);
return r;
}
/* ---------------------------------------------------------------------- */
static int get_string(struct libusb_device_handle *dev, char *buf, size_t size, u_int8_t id)
{
int ret;
if (!dev) {
buf[0] = 0;
return 0;
}
if (id) {
ret = libusb_get_string_descriptor_ascii(dev, id & 0xff, (unsigned char *) buf,
size);
if (ret <= 0) {
buf[0] = 0;
return 0;
} else
return ret;
} else {
buf[0] = 0;
return 0;
}
}
static int get_vendor_string(char *buf, size_t size, u_int16_t vid)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_vendor(vid)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static int get_product_string(char *buf, size_t size, u_int16_t vid, u_int16_t pid)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_product(vid, pid)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static int get_class_string(char *buf, size_t size, u_int8_t cls)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_class(cls)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static int get_subclass_string(char *buf, size_t size, u_int8_t cls, u_int8_t subcls)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_subclass(cls, subcls)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static int get_protocol_string(char *buf, size_t size, u_int8_t cls, u_int8_t subcls, u_int8_t proto)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_protocol(cls, subcls, proto)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static int get_audioterminal_string(char *buf, size_t size, u_int16_t termt)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_audioterminal(termt)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static int get_videoterminal_string(char *buf, size_t size, u_int16_t termt)
{
const char *cp;
if (size < 1)
return 0;
*buf = 0;
if (!(cp = names_videoterminal(termt)))
return 0;
return snprintf(buf, size, "%s", cp);
}
static const char *get_guid(unsigned char *buf)
{
static char guid[39];
/* NOTE: see RFC 4122 for more information about GUID/UUID
* structure. The first fields fields are historically big
* endian numbers, dating from Apollo mc68000 workstations.
*/
sprintf(guid, "{%02x%02x%02x%02x"
"-%02x%02x"
"-%02x%02x"
"-%02x%02x"
"-%02x%02x%02x%02x%02x%02x}",
buf[0], buf[1], buf[2], buf[3],
buf[4], buf[5],
buf[6], buf[7],
buf[8], buf[9],
buf[10], buf[11], buf[12], buf[13], buf[14], buf[15]);
return guid;
}
/* ---------------------------------------------------------------------- */
static void dump_bytes(unsigned char *buf, unsigned int len)
{
unsigned int i;
for (i = 0; i < len; i++)
printf(" %02x", buf[i]);
printf("\n");
}
static void dump_junk(unsigned char *buf, const char *indent, unsigned int len)
{
unsigned int i;
if (buf[0] <= len)
return;
printf("%sjunk at descriptor end:", indent);
for (i = len; i < buf[0]; i++)
printf(" %02x", buf[i]);
printf("\n");
}
/*
* General config descriptor dump
*/
static void dump_device(struct libusb_device_handle *dev, struct libusb_device_descriptor *descriptor)
{
char vendor[128], product[128];
char cls[128], subcls[128], proto[128];
char mfg[128], prod[128], serial[128];
get_vendor_string(vendor, sizeof(vendor), descriptor->idVendor);
get_product_string(product, sizeof(product),
descriptor->idVendor, descriptor->idProduct);
get_class_string(cls, sizeof(cls), descriptor->bDeviceClass);
get_subclass_string(subcls, sizeof(subcls),
descriptor->bDeviceClass, descriptor->bDeviceSubClass);
get_protocol_string(proto, sizeof(proto), descriptor->bDeviceClass,
descriptor->bDeviceSubClass, descriptor->bDeviceProtocol);
get_string(dev, mfg, sizeof(mfg), descriptor->iManufacturer);
get_string(dev, prod, sizeof(prod), descriptor->iProduct);
get_string(dev, serial, sizeof(serial), descriptor->iSerialNumber);
printf("Device Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bcdUSB %2x.%02x\n"
" bDeviceClass %5u %s\n"
" bDeviceSubClass %5u %s\n"
" bDeviceProtocol %5u %s\n"
" bMaxPacketSize0 %5u\n"
" idVendor 0x%04x %s\n"
" idProduct 0x%04x %s\n"
" bcdDevice %2x.%02x\n"
" iManufacturer %5u %s\n"
" iProduct %5u %s\n"
" iSerial %5u %s\n"
" bNumConfigurations %5u\n",
descriptor->bLength, descriptor->bDescriptorType,
descriptor->bcdUSB >> 8, descriptor->bcdUSB & 0xff,
descriptor->bDeviceClass, cls,
descriptor->bDeviceSubClass, subcls,
descriptor->bDeviceProtocol, proto,
descriptor->bMaxPacketSize0,
descriptor->idVendor, vendor, descriptor->idProduct, product,
descriptor->bcdDevice >> 8, descriptor->bcdDevice & 0xff,
descriptor->iManufacturer, mfg,
descriptor->iProduct, prod,
descriptor->iSerialNumber, serial,
descriptor->bNumConfigurations);
}
static void dump_wire_adapter(unsigned char *buf)
{
printf(" Wire Adapter Class Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bcdWAVersion %2x.%02x\n"
" bNumPorts %5u\n"
" bmAttributes %5u\n"
" wNumRPRipes %5u\n"
" wRPipeMaxBlock %5u\n"
" bRPipeBlockSize %5u\n"
" bPwrOn2PwrGood %5u\n"
" bNumMMCIEs %5u\n"
" DeviceRemovable %5u\n",
buf[0], buf[1], buf[3], buf[2], buf[4], buf[5],
(buf[6] | buf[7] << 8),
(buf[8] | buf[9] << 8),
buf[10], buf[11], buf[12], buf[13]);
}
static void dump_rc_interface(unsigned char *buf)
{
printf(" Radio Control Interface Class Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bcdRCIVersion %2x.%02x\n",
buf[0], buf[1], buf[3], buf[2]);
}
static void dump_security(unsigned char *buf)
{
printf(" Security Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" wTotalLength %5u\n"
" bNumEncryptionTypes %5u\n",
buf[0], buf[1], (buf[3] << 8 | buf[2]), buf[4]);
}
static void dump_encryption_type(unsigned char *buf)
{
int b_encryption_type = buf[2] & 0x4;
printf(" Encryption Type Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bEncryptionType %5u %s\n"
" bEncryptionValue %5u\n"
" bAuthKeyIndex %5u\n",
buf[0], buf[1], buf[2],
encryption_type[b_encryption_type], buf[3], buf[4]);
}
static void dump_association(struct libusb_device_handle *dev, unsigned char *buf)
{
char cls[128], subcls[128], proto[128];
char func[128];
get_class_string(cls, sizeof(cls), buf[4]);
get_subclass_string(subcls, sizeof(subcls), buf[4], buf[5]);
get_protocol_string(proto, sizeof(proto), buf[4], buf[5], buf[6]);
get_string(dev, func, sizeof(func), buf[7]);
printf(" Interface Association:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bFirstInterface %5u\n"
" bInterfaceCount %5u\n"
" bFunctionClass %5u %s\n"
" bFunctionSubClass %5u %s\n"
" bFunctionProtocol %5u %s\n"
" iFunction %5u %s\n",
buf[0], buf[1],
buf[2], buf[3],
buf[4], cls,
buf[5], subcls,
buf[6], proto,
buf[7], func);
}
static void dump_config(struct libusb_device_handle *dev, struct libusb_config_descriptor *config)
{
char cfg[128];
int i;
get_string(dev, cfg, sizeof(cfg), config->iConfiguration);
printf(" Configuration Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" wTotalLength %5u\n"
" bNumInterfaces %5u\n"
" bConfigurationValue %5u\n"
" iConfiguration %5u %s\n"
" bmAttributes 0x%02x\n",
config->bLength, config->bDescriptorType,
le16_to_cpu(config->wTotalLength),
config->bNumInterfaces, config->bConfigurationValue,
config->iConfiguration,
cfg, config->bmAttributes);
if (!(config->bmAttributes & 0x80))
printf(" (Missing must-be-set bit!)\n");
if (config->bmAttributes & 0x40)
printf(" Self Powered\n");
else
printf(" (Bus Powered)\n");
if (config->bmAttributes & 0x20)
printf(" Remote Wakeup\n");
if (config->bmAttributes & 0x10)
printf(" Battery Powered\n");
printf(" MaxPower %5umA\n", config->MaxPower * 2);
/* avoid re-ordering or hiding descriptors for display */
if (config->extra_length) {
int size = config->extra_length;
unsigned char *buf = (unsigned char *) config->extra;
while (size >= 2) {
if (buf[0] < 2) {
dump_junk(buf, " ", size);
break;
}
switch (buf[1]) {
case USB_DT_OTG:
/* handled separately */
break;
case USB_DT_INTERFACE_ASSOCIATION:
dump_association(dev, buf);
break;
case USB_DT_SECURITY:
dump_security(buf);
break;
case USB_DT_ENCRYPTION_TYPE:
dump_encryption_type(buf);
break;
default:
/* often a misplaced class descriptor */
printf(" ** UNRECOGNIZED: ");
dump_bytes(buf, buf[0]);
break;
}
size -= buf[0];
buf += buf[0];
}
}
for (i = 0 ; i < config->bNumInterfaces ; i++)
dump_interface(dev, (struct libusb_interface *) &config->interface[i]);
}
static void dump_altsetting(struct libusb_device_handle *dev, struct libusb_interface_descriptor *interface)
{
char cls[128], subcls[128], proto[128];
char ifstr[128];
unsigned char *buf;
unsigned size, i;
get_class_string(cls, sizeof(cls), interface->bInterfaceClass);
get_subclass_string(subcls, sizeof(subcls), interface->bInterfaceClass, interface->bInterfaceSubClass);
get_protocol_string(proto, sizeof(proto), interface->bInterfaceClass, interface->bInterfaceSubClass, interface->bInterfaceProtocol);
get_string(dev, ifstr, sizeof(ifstr), interface->iInterface);
printf(" Interface Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bInterfaceNumber %5u\n"
" bAlternateSetting %5u\n"
" bNumEndpoints %5u\n"
" bInterfaceClass %5u %s\n"
" bInterfaceSubClass %5u %s\n"
" bInterfaceProtocol %5u %s\n"
" iInterface %5u %s\n",
interface->bLength, interface->bDescriptorType, interface->bInterfaceNumber,
interface->bAlternateSetting, interface->bNumEndpoints, interface->bInterfaceClass, cls,
interface->bInterfaceSubClass, subcls, interface->bInterfaceProtocol, proto,
interface->iInterface, ifstr);
/* avoid re-ordering or hiding descriptors for display */
if (interface->extra_length) {
size = interface->extra_length;
buf = (unsigned char *) interface->extra;
while (size >= 2 * sizeof(u_int8_t)) {
if (buf[0] < 2) {
dump_junk(buf, " ", size);
break;
}
switch (buf[1]) {
/* This is the polite way to provide class specific
* descriptors: explicitly tagged, using common class
* spec conventions.
*/
case USB_DT_CS_DEVICE:
case USB_DT_CS_INTERFACE:
switch (interface->bInterfaceClass) {
case LIBUSB_CLASS_AUDIO:
switch (interface->bInterfaceSubClass) {
case 1:
dump_audiocontrol_interface(dev, buf);
break;
case 2:
dump_audiostreaming_interface(buf);
break;
case 3:
dump_midistreaming_interface(dev, buf);
break;
default:
goto dump;
}
break;
case LIBUSB_CLASS_COMM:
dump_comm_descriptor(dev, buf,
" ");
break;
case USB_CLASS_VIDEO:
switch (interface->bInterfaceSubClass) {
case 1:
dump_videocontrol_interface(dev, buf);
break;
case 2:
dump_videostreaming_interface(buf);
break;
default:
goto dump;
}
break;
case USB_CLASS_APPLICATION:
switch (interface->bInterfaceSubClass) {
case 1:
dump_dfu_interface(buf);
break;
default:
goto dump;
}
break;
case LIBUSB_CLASS_HID:
dump_hid_device(dev, interface, buf);
break;
case USB_CLASS_CCID:
dump_ccid_device(buf);
break;
default:
goto dump;
}
break;
/* This is the ugly way: implicitly tagged,
* each class could redefine the type IDs.
*/
default:
switch (interface->bInterfaceClass) {
case LIBUSB_CLASS_HID:
dump_hid_device(dev, interface, buf);
break;
case USB_CLASS_CCID:
dump_ccid_device(buf);
break;
case 0xe0: /* wireless */
switch (interface->bInterfaceSubClass) {
case 1:
switch (interface->bInterfaceProtocol) {
case 2:
dump_rc_interface(buf);
break;
default:
goto dump;
}
break;
case 2:
dump_wire_adapter(buf);
break;
default:
goto dump;
}
break;
default:
/* ... not everything is class-specific */
switch (buf[1]) {
case USB_DT_OTG:
/* handled separately */
break;
case USB_DT_INTERFACE_ASSOCIATION:
dump_association(dev, buf);
break;
default:
dump:
/* often a misplaced class descriptor */
printf(" ** UNRECOGNIZED: ");
dump_bytes(buf, buf[0]);
break;
}
}
}
size -= buf[0];
buf += buf[0];
}
}
for (i = 0 ; i < interface->bNumEndpoints ; i++)
dump_endpoint(dev, interface, (struct libusb_endpoint_descriptor *) &interface->endpoint[i]);
}
static void dump_interface(struct libusb_device_handle *dev, struct libusb_interface *interface)
{
int i;
for (i = 0; i < interface->num_altsetting; i++)
dump_altsetting(dev, (struct libusb_interface_descriptor *) &interface->altsetting[i]);
}
static void dump_endpoint(struct libusb_device_handle *dev, struct libusb_interface_descriptor *interface, struct libusb_endpoint_descriptor *endpoint)
{
static const char *typeattr[] = {
"Control",
"Isochronous",
"Bulk",
"Interrupt"
};
static const char *syncattr[] = {
"None",
"Asynchronous",
"Adaptive",
"Synchronous"
};
static const char *usage[] = {
"Data",
"Feedback",
"Implicit feedback Data",
"(reserved)"
};
static const char *hb[] = { "1x", "2x", "3x", "(?\?)" };
unsigned char *buf;
unsigned size;
unsigned wmax = le16_to_cpu(endpoint->wMaxPacketSize);
printf(" Endpoint Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bEndpointAddress 0x%02x EP %u %s\n"
" bmAttributes %5u\n"
" Transfer Type %s\n"
" Synch Type %s\n"
" Usage Type %s\n"
" wMaxPacketSize 0x%04x %s %d bytes\n"
" bInterval %5u\n",
endpoint->bLength,
endpoint->bDescriptorType,
endpoint->bEndpointAddress,
endpoint->bEndpointAddress & 0x0f,
(endpoint->bEndpointAddress & 0x80) ? "IN" : "OUT",
endpoint->bmAttributes,
typeattr[endpoint->bmAttributes & 3],
syncattr[(endpoint->bmAttributes >> 2) & 3],
usage[(endpoint->bmAttributes >> 4) & 3],
wmax, hb[(wmax >> 11) & 3], wmax & 0x7ff,
endpoint->bInterval);
/* only for audio endpoints */
if (endpoint->bLength == 9)
printf(" bRefresh %5u\n"
" bSynchAddress %5u\n",
endpoint->bRefresh, endpoint->bSynchAddress);
/* avoid re-ordering or hiding descriptors for display */
if (endpoint->extra_length) {
size = endpoint->extra_length;
buf = (unsigned char *) endpoint->extra;
while (size >= 2 * sizeof(u_int8_t)) {
if (buf[0] < 2) {
dump_junk(buf, " ", size);
break;
}
switch (buf[1]) {
case USB_DT_CS_ENDPOINT:
if (interface->bInterfaceClass == 1 && interface->bInterfaceSubClass == 2)
dump_audiostreaming_endpoint(buf);
else if (interface->bInterfaceClass == 1 && interface->bInterfaceSubClass == 3)
dump_midistreaming_endpoint(buf);
break;
case USB_DT_CS_INTERFACE:
/* MISPLACED DESCRIPTOR ... less indent */
switch (interface->bInterfaceClass) {
case LIBUSB_CLASS_COMM:
case LIBUSB_CLASS_DATA: /* comm data */
dump_comm_descriptor(dev, buf,
" ");
break;
default:
printf(" INTERFACE CLASS: ");
dump_bytes(buf, buf[0]);
}
break;
case USB_DT_OTG:
/* handled separately */
break;
case USB_DT_INTERFACE_ASSOCIATION:
dump_association(dev, buf);
break;
case USB_DT_SS_ENDPOINT_COMP:
printf(" bMaxBurst %15u\n", buf[2] + 1);
break;
default:
/* often a misplaced class descriptor */
printf(" ** UNRECOGNIZED: ");
dump_bytes(buf, buf[0]);
break;
}
size -= buf[0];
buf += buf[0];
}
}
}
static void dump_unit(unsigned int data, unsigned int len)
{
char *systems[5] = { "None", "SI Linear", "SI Rotation",
"English Linear", "English Rotation" };
char *units[5][8] = {
{ "None", "None", "None", "None", "None",
"None", "None", "None" },
{ "None", "Centimeter", "Gram", "Seconds", "Kelvin",
"Ampere", "Candela", "None" },
{ "None", "Radians", "Gram", "Seconds", "Kelvin",
"Ampere", "Candela", "None" },
{ "None", "Inch", "Slug", "Seconds", "Fahrenheit",
"Ampere", "Candela", "None" },
{ "None", "Degrees", "Slug", "Seconds", "Fahrenheit",
"Ampere", "Candela", "None" },
};
unsigned int i;
unsigned int sys;
int earlier_unit = 0;
/* First nibble tells us which system we're in. */
sys = data & 0xf;
data >>= 4;
if (sys > 4) {
if (sys == 0xf)
printf("System: Vendor defined, Unit: (unknown)\n");
else
printf("System: Reserved, Unit: (unknown)\n");
return;
} else {
printf("System: %s, Unit: ", systems[sys]);
}
for (i = 1 ; i < len * 2 ; i++) {
char nibble = data & 0xf;
data >>= 4;
if (nibble != 0) {
if (earlier_unit++ > 0)
printf("*");
printf("%s", units[sys][i]);
if (nibble != 1) {
/* This is a _signed_ nibble(!) */
int val = nibble & 0x7;
if (nibble & 0x08)
val = -((0x7 & ~val) + 1);
printf("^%d", val);
}
}
}
if (earlier_unit == 0)
printf("(None)");
printf("\n");
}
/* ---------------------------------------------------------------------- */
/*
* Audio Class descriptor dump
*/
static void dump_audiocontrol_interface(struct libusb_device_handle *dev, unsigned char *buf)
{
static const char *chconfig[] = {
"Left Front (L)", "Right Front (R)", "Center Front (C)", "Low Freqency Enhancement (LFE)",
"Left Surround (LS)", "Right Surround (RS)", "Left of Center (LC)", "Right of Center (RC)",
"Surround (S)", "Side Left (SL)", "Side Right (SR)", "Top (T)"
};
static const char *chftrcontrols[] = {
"Mute", "Volume", "Bass", "Mid", "Treble", "Graphic Equalizer", "Automatic Gain", "Delay", "Bass Boost", "Loudness"
};
unsigned int i, chcfg, j, k, N, termt;
char chnames[128], term[128], termts[128];
if (buf[1] != USB_DT_CS_INTERFACE)
printf(" Warning: Invalid descriptor\n");
else if (buf[0] < 3)
printf(" Warning: Descriptor too short\n");
printf(" AudioControl Interface Descriptor:\n"
" bLength %5u\n"
" bDescriptorType %5u\n"
" bDescriptorSubtype %5u ",
buf[0], buf[1], buf[2]);
switch (buf[2]) {
case 0x01: /* HEADER */
printf("(HEADER)\n");
if (buf[0] < 8+buf[7])
printf(" Warning: Descriptor too short\n");
printf(" bcdADC %2x.%02x\n"
" wTotalLength %5u\n"
" bInCollection %5u\n",
buf[4], buf[3], buf[5] | (buf[6] << 8), buf[7]);
for (i = 0; i < buf[7]; i++)
printf(" baInterfaceNr(%2u) %5u\n", i, buf[8+i]);
dump_junk(buf, " ", 8+buf[7]);
break;
case 0x02: /* INPUT_TERMINAL */
printf("(INPUT_TERMINAL)\n");
get_string(dev, chnames, sizeof(chnames), buf[10]);
get_string(dev, term, sizeof(term), buf[11]);
termt = buf[4] | (buf[5] << 8);
get_audioterminal_string(termts, sizeof(termts), termt);
if (buf[0] < 12)
printf(" Warning: Descriptor too short\n");
chcfg = buf[8] | (buf[9] << 8);
printf(" bTerminalID %5u\n"
" wTerminalType 0x%04x %s\n"
" bAssocTerminal %5u\n"
" bNrChannels %5u\n"
" wChannelConfig 0x%04x\n",
buf[3], termt, termts, buf[6], buf[7], chcfg);
for (i = 0; i < 12; i++)
if ((chcfg >> i) & 1)
printf(" %s\n", chconfig[i]);
printf(" iChannelNames %5u %s\n"
" iTerminal %5u %s\n",
buf[10], chnames, buf[11], term);
dump_junk(buf, " ", 12);
break;
case 0x03: /* OUTPUT_TERMINAL */
printf("(OUTPUT_TERMINAL)\n");
get_string(dev, term, sizeof(term), buf[8]);
termt = buf[4] | (buf[5] << 8);
get_audioterminal_string(termts, sizeof(termts), termt);
if (buf[0] < 9)
printf(" Warning: Descriptor too short\n");
printf(" bTerminalID %5u\n"
" wTerminalType 0x%04x %s\n"
" bAssocTerminal %5u\n"
" bSourceID %5u\n"
" iTerminal %5u %s\n",
buf[3], termt, termts, buf[6], buf[7], buf[8], term);
dump_junk(buf, " ", 9);
break;
case 0x04: /* MIXER_UNIT */
printf("(MIXER_UNIT)\n");
j = buf[4];
k = buf[j+5];
if (j == 0 || k == 0) {
printf(" Warning: mixer with %5u input and %5u output channels.\n", j, k);
N = 0;
} else {
N = 1+(j*k-1)/8;
}
get_string(dev, chnames, sizeof(chnames), buf[8+j]);
get_string(dev, term, sizeof(term), buf[9+j+N]);
if (buf[0] < 10+j+N)
printf(" Warning: Descriptor too short\n");
chcfg = buf[6+j] | (buf[7+j] << 8);
printf(" bUnitID %5u\n"
" bNrInPins %5u\n",
buf[3], buf[4]);
for (i = 0; i < j; i++)
printf(" baSourceID(%2u) %5u\n", i, buf[5+i]);
printf(" bNrChannels %5u\n"
" wChannelConfig 0x%04x\n",
buf[5+j], chcfg);
for (i = 0; i < 12; i++)
if ((chcfg >> i) & 1)
printf(" %s\n", chconfig[i]);
printf(" iChannelNames %5u %s\n",
buf[8+j], chnames);
for (i = 0; i < N; i++)
printf(" bmControls 0x%02x\n", buf[9+j+i]);
printf(" iMixer %5u %s\n", buf[9+j+N], term);
dump_junk(buf, " ", 10+j+N);
break;
case 0x05: /* SELECTOR_UNIT */
printf("(SELECTOR_UNIT)\n");
if (buf[0] < 6+buf[4])
printf(" Warning: Descriptor too short\n");
get_string(dev, term, sizeof(term), buf[5+buf[4]]);
printf(" bUnitID %5u\n"
" bNrInPins %5u\n",
buf[3], buf[4]);
for (i = 0; i < buf[4]; i++)
printf(" baSource(%2u) %5u\n", i, buf[5+i]);
printf(" iSelector %5u %s\n",
buf[5+buf[4]], term);
dump_junk(buf, " ", 6+buf[4]);
break;
case 0x06: /* FEATURE_UNIT */
printf("(FEATURE_UNIT)\n");
j = buf[5];
if (!j)
j = 1;
k = (buf[0] - 7) / j;
if (buf[0] < 7+buf[5]*k)
printf(" Warning: Descriptor too short\n");
get_string(dev, term, sizeof(term), buf[6+buf[5]*k]);
printf(" bUnitID %5u\n"
" bSourceID %5u\n"
" bControlSize %5u\n",
buf[3], buf[4], buf[5]);
for (i = 0; i < k; i++) {
chcfg = buf[6+buf[5]*i];
if (buf[5] > 1)
chcfg |= (buf[7+buf[5]*i] << 8);
for (j = 0; j < buf[5]; j++)
printf(" bmaControls(%2u) 0x%02x\n", i, buf[6+buf[5]*i+j]);
for (j = 0; j < 10; j++)
if ((chcfg >> j) & 1)
printf(" %s\n", chftrcontrols[j]);
}
printf(" iFeature %5u %s\n", buf[6+buf[5]*k], term);
dump_junk(buf, " ", 7+buf[5]*k);
break;
case 0x07: /* PROCESSING_UNIT */
printf("(PROCESSING_UNIT)\n");
j = buf[6];
k = buf[11+j];