1/* 2 * Prototypes, structure definitions and macros. 3 * 4 * Copyright (c) 2000-2003 Johannes Erdfelt <johannes@erdfelt.com> 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 * 20 * This file (and only this file) may alternatively be licensed under the 21 * BSD license. See the LICENSE file shipped with the libusb-compat-0.1 source 22 * distribution for details. 23 */ 24 25#ifndef __USB_H__ 26#define __USB_H__ 27 28#include <unistd.h> 29#include <stdlib.h> 30#include <limits.h> 31 32#include <dirent.h> 33 34/* 35 * USB spec information 36 * 37 * This is all stuff grabbed from various USB specs and is pretty much 38 * not subject to change 39 */ 40 41/* 42 * Device and/or Interface Class codes 43 */ 44#define USB_CLASS_PER_INTERFACE 0 /* for DeviceClass */ 45#define USB_CLASS_AUDIO 1 46#define USB_CLASS_COMM 2 47#define USB_CLASS_HID 3 48#define USB_CLASS_PRINTER 7 49#define USB_CLASS_PTP 6 50#define USB_CLASS_MASS_STORAGE 8 51#define USB_CLASS_HUB 9 52#define USB_CLASS_DATA 10 53#define USB_CLASS_VENDOR_SPEC 0xff 54 55/* 56 * Descriptor types 57 */ 58#define USB_DT_DEVICE 0x01 59#define USB_DT_CONFIG 0x02 60#define USB_DT_STRING 0x03 61#define USB_DT_INTERFACE 0x04 62#define USB_DT_ENDPOINT 0x05 63 64#define USB_DT_HID 0x21 65#define USB_DT_REPORT 0x22 66#define USB_DT_PHYSICAL 0x23 67#define USB_DT_HUB 0x29 68 69/* 70 * Descriptor sizes per descriptor type 71 */ 72#define USB_DT_DEVICE_SIZE 18 73#define USB_DT_CONFIG_SIZE 9 74#define USB_DT_INTERFACE_SIZE 9 75#define USB_DT_ENDPOINT_SIZE 7 76#define USB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */ 77#define USB_DT_HUB_NONVAR_SIZE 7 78 79/* All standard descriptors have these 2 fields in common */ 80struct usb_descriptor_header { 81 u_int8_t bLength; 82 u_int8_t bDescriptorType; 83}; 84 85/* String descriptor */ 86struct usb_string_descriptor { 87 u_int8_t bLength; 88 u_int8_t bDescriptorType; 89 u_int16_t wData[1]; 90}; 91 92/* HID descriptor */ 93struct usb_hid_descriptor { 94 u_int8_t bLength; 95 u_int8_t bDescriptorType; 96 u_int16_t bcdHID; 97 u_int8_t bCountryCode; 98 u_int8_t bNumDescriptors; 99 /* u_int8_t bReportDescriptorType; */ 100 /* u_int16_t wDescriptorLength; */ 101 /* ... */ 102}; 103 104/* Endpoint descriptor */ 105#define USB_MAXENDPOINTS 32 106struct usb_endpoint_descriptor { 107 u_int8_t bLength; 108 u_int8_t bDescriptorType; 109 u_int8_t bEndpointAddress; 110 u_int8_t bmAttributes; 111 u_int16_t wMaxPacketSize; 112 u_int8_t bInterval; 113 u_int8_t bRefresh; 114 u_int8_t bSynchAddress; 115 116 unsigned char *extra; /* Extra descriptors */ 117 int extralen; 118}; 119 120#define USB_ENDPOINT_ADDRESS_MASK 0x0f /* in bEndpointAddress */ 121#define USB_ENDPOINT_DIR_MASK 0x80 122 123#define USB_ENDPOINT_TYPE_MASK 0x03 /* in bmAttributes */ 124#define USB_ENDPOINT_TYPE_CONTROL 0 125#define USB_ENDPOINT_TYPE_ISOCHRONOUS 1 126#define USB_ENDPOINT_TYPE_BULK 2 127#define USB_ENDPOINT_TYPE_INTERRUPT 3 128 129/* Interface descriptor */ 130#define USB_MAXINTERFACES 32 131struct usb_interface_descriptor { 132 u_int8_t bLength; 133 u_int8_t bDescriptorType; 134 u_int8_t bInterfaceNumber; 135 u_int8_t bAlternateSetting; 136 u_int8_t bNumEndpoints; 137 u_int8_t bInterfaceClass; 138 u_int8_t bInterfaceSubClass; 139 u_int8_t bInterfaceProtocol; 140 u_int8_t iInterface; 141 142 struct usb_endpoint_descriptor *endpoint; 143 144 unsigned char *extra; /* Extra descriptors */ 145 int extralen; 146}; 147 148#define USB_MAXALTSETTING 128 /* Hard limit */ 149struct usb_interface { 150 struct usb_interface_descriptor *altsetting; 151 152 int num_altsetting; 153}; 154 155/* Configuration descriptor information.. */ 156#define USB_MAXCONFIG 8 157struct usb_config_descriptor { 158 u_int8_t bLength; 159 u_int8_t bDescriptorType; 160 u_int16_t wTotalLength; 161 u_int8_t bNumInterfaces; 162 u_int8_t bConfigurationValue; 163 u_int8_t iConfiguration; 164 u_int8_t bmAttributes; 165 u_int8_t MaxPower; 166 167 struct usb_interface *interface; 168 169 unsigned char *extra; /* Extra descriptors */ 170 int extralen; 171}; 172 173/* Device descriptor */ 174struct usb_device_descriptor { 175 u_int8_t bLength; 176 u_int8_t bDescriptorType; 177 u_int16_t bcdUSB; 178 u_int8_t bDeviceClass; 179 u_int8_t bDeviceSubClass; 180 u_int8_t bDeviceProtocol; 181 u_int8_t bMaxPacketSize0; 182 u_int16_t idVendor; 183 u_int16_t idProduct; 184 u_int16_t bcdDevice; 185 u_int8_t iManufacturer; 186 u_int8_t iProduct; 187 u_int8_t iSerialNumber; 188 u_int8_t bNumConfigurations; 189}; 190 191struct usb_ctrl_setup { 192 u_int8_t bRequestType; 193 u_int8_t bRequest; 194 u_int16_t wValue; 195 u_int16_t wIndex; 196 u_int16_t wLength; 197}; 198 199/* 200 * Standard requests 201 */ 202#define USB_REQ_GET_STATUS 0x00 203#define USB_REQ_CLEAR_FEATURE 0x01 204/* 0x02 is reserved */ 205#define USB_REQ_SET_FEATURE 0x03 206/* 0x04 is reserved */ 207#define USB_REQ_SET_ADDRESS 0x05 208#define USB_REQ_GET_DESCRIPTOR 0x06 209#define USB_REQ_SET_DESCRIPTOR 0x07 210#define USB_REQ_GET_CONFIGURATION 0x08 211#define USB_REQ_SET_CONFIGURATION 0x09 212#define USB_REQ_GET_INTERFACE 0x0A 213#define USB_REQ_SET_INTERFACE 0x0B 214#define USB_REQ_SYNCH_FRAME 0x0C 215 216#define USB_TYPE_STANDARD (0x00 << 5) 217#define USB_TYPE_CLASS (0x01 << 5) 218#define USB_TYPE_VENDOR (0x02 << 5) 219#define USB_TYPE_RESERVED (0x03 << 5) 220 221#define USB_RECIP_DEVICE 0x00 222#define USB_RECIP_INTERFACE 0x01 223#define USB_RECIP_ENDPOINT 0x02 224#define USB_RECIP_OTHER 0x03 225 226/* 227 * Various libusb API related stuff 228 */ 229 230#define USB_ENDPOINT_IN 0x80 231#define USB_ENDPOINT_OUT 0x00 232 233/* Error codes */ 234#define USB_ERROR_BEGIN 500000 235 236/* Data types */ 237struct usb_device; 238struct usb_bus; 239 240/* 241 * To maintain compatibility with applications already built with libusb, 242 * we must only add entries to the end of this structure. NEVER delete or 243 * move members and only change types if you really know what you're doing. 244 */ 245struct usb_device { 246 struct usb_device *next, *prev; 247 248 char filename[PATH_MAX + 1]; 249 250 struct usb_bus *bus; 251 252 struct usb_device_descriptor descriptor; 253 struct usb_config_descriptor *config; 254 255 void *dev; /* Darwin support */ 256 257 u_int8_t devnum; 258 259 unsigned char num_children; 260 struct usb_device **children; 261}; 262 263struct usb_bus { 264 struct usb_bus *next, *prev; 265 266 char dirname[PATH_MAX + 1]; 267 268 struct usb_device *devices; 269 u_int32_t location; 270 271 struct usb_device *root_dev; 272}; 273 274struct usb_dev_handle; 275typedef struct usb_dev_handle usb_dev_handle; 276 277/* Variables */ 278extern struct usb_bus *usb_busses; 279 280#ifdef __cplusplus 281extern "C" { 282#endif 283 284/* Function prototypes */ 285 286/* usb.c */ 287usb_dev_handle *usb_open(struct usb_device *dev); 288int usb_close(usb_dev_handle *dev); 289int usb_get_string(usb_dev_handle *dev, int index, int langid, char *buf, 290 size_t buflen); 291int usb_get_string_simple(usb_dev_handle *dev, int index, char *buf, 292 size_t buflen); 293 294/* descriptors.c */ 295int usb_get_descriptor_by_endpoint(usb_dev_handle *udev, int ep, 296 unsigned char type, unsigned char index, void *buf, int size); 297int usb_get_descriptor(usb_dev_handle *udev, unsigned char type, 298 unsigned char index, void *buf, int size); 299 300/* <arch>.c */ 301int usb_bulk_write(usb_dev_handle *dev, int ep, char *bytes, int size, 302 int timeout); 303int usb_bulk_read(usb_dev_handle *dev, int ep, char *bytes, int size, 304 int timeout); 305int usb_interrupt_write(usb_dev_handle *dev, int ep, char *bytes, int size, 306 int timeout); 307int usb_interrupt_read(usb_dev_handle *dev, int ep, char *bytes, int size, 308 int timeout); 309int usb_control_msg(usb_dev_handle *dev, int requesttype, int request, 310 int value, int index, char *bytes, int size, int timeout); 311int usb_set_configuration(usb_dev_handle *dev, int configuration); 312int usb_claim_interface(usb_dev_handle *dev, int interface); 313int usb_release_interface(usb_dev_handle *dev, int interface); 314int usb_set_altinterface(usb_dev_handle *dev, int alternate); 315int usb_resetep(usb_dev_handle *dev, unsigned int ep); 316int usb_clear_halt(usb_dev_handle *dev, unsigned int ep); 317int usb_reset(usb_dev_handle *dev); 318 319#define LIBUSB_HAS_GET_DRIVER_NP 1 320int usb_get_driver_np(usb_dev_handle *dev, int interface, char *name, 321 unsigned int namelen); 322#define LIBUSB_HAS_DETACH_KERNEL_DRIVER_NP 1 323int usb_detach_kernel_driver_np(usb_dev_handle *dev, int interface); 324 325char *usb_strerror(void); 326 327void usb_init(void); 328void usb_set_debug(int level); 329int usb_find_busses(void); 330int usb_find_devices(void); 331struct usb_device *usb_device(usb_dev_handle *dev); 332struct usb_bus *usb_get_busses(void); 333 334#ifdef __cplusplus 335} 336#endif 337 338#endif /* __USB_H__ */ 339 340