File: usb.h.in

package info (click to toggle)
libusb 2%3A0.1.12-25
  • links: PTS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 2,312 kB
  • ctags: 1,345
  • sloc: sh: 8,374; ansic: 3,271; cpp: 960; makefile: 226
file content (344 lines) | stat: -rw-r--r-- 8,594 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
/*
 * Prototypes, structure definitions and macros.
 *
 * Copyright (c) 2000-2003 Johannes Erdfelt <johannes@erdfelt.com>
 *
 * This library is covered by the LGPL, read LICENSE for details.
 *
 * This file (and only this file) may alternatively be licensed under the
 * BSD license as well, read LICENSE for details.
 */
#ifndef __USB_H__
#define __USB_H__

#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <limits.h>

#include <sys/param.h>
#include <dirent.h>

/*
 * USB spec information
 *
 * This is all stuff grabbed from various USB specs and is pretty much
 * not subject to change
 */

/*
 * Device and/or Interface Class codes
 */
#define USB_CLASS_PER_INTERFACE		0	/* for DeviceClass */
#define USB_CLASS_AUDIO			1
#define USB_CLASS_COMM			2
#define USB_CLASS_HID			3
#define USB_CLASS_PRINTER		7
#define USB_CLASS_PTP			6
#define USB_CLASS_MASS_STORAGE		8
#define USB_CLASS_HUB			9
#define USB_CLASS_DATA			10
#define USB_CLASS_VENDOR_SPEC		0xff

/*
 * Descriptor types
 */
#define USB_DT_DEVICE			0x01
#define USB_DT_CONFIG			0x02
#define USB_DT_STRING			0x03
#define USB_DT_INTERFACE		0x04
#define USB_DT_ENDPOINT			0x05

#define USB_DT_HID			0x21
#define USB_DT_REPORT			0x22
#define USB_DT_PHYSICAL			0x23
#define USB_DT_HUB			0x29

/*
 * Descriptor sizes per descriptor type
 */
#define USB_DT_DEVICE_SIZE		18
#define USB_DT_CONFIG_SIZE		9
#define USB_DT_INTERFACE_SIZE		9
#define USB_DT_ENDPOINT_SIZE		7
#define USB_DT_ENDPOINT_AUDIO_SIZE	9	/* Audio extension */
#define USB_DT_HUB_NONVAR_SIZE		7

/* All standard descriptors have these 2 fields in common */
struct usb_descriptor_header {
	uint8_t  bLength;
	uint8_t  bDescriptorType;
} __attribute__ ((packed));

/* String descriptor */
struct usb_string_descriptor {
	uint8_t  bLength;
	uint8_t  bDescriptorType;
	uint16_t wData[1];
} __attribute__ ((packed));

/* HID descriptor */
struct usb_hid_descriptor {
	uint8_t  bLength;
	uint8_t  bDescriptorType;
	uint16_t bcdHID;
	uint8_t  bCountryCode;
	uint8_t  bNumDescriptors;
	/* uint8_t  bReportDescriptorType; */
	/* uint16_t wDescriptorLength; */
	/* ... */
} __attribute__ ((packed));

/* Endpoint descriptor */
#define USB_MAXENDPOINTS	32
struct usb_endpoint_descriptor {
	uint8_t  bLength;
	uint8_t  bDescriptorType;
	uint8_t  bEndpointAddress;
	uint8_t  bmAttributes;
	uint16_t wMaxPacketSize;
	uint8_t  bInterval;
	uint8_t  bRefresh;
	uint8_t  bSynchAddress;

	unsigned char *extra;	/* Extra descriptors */
	int extralen;
};

#define USB_ENDPOINT_ADDRESS_MASK	0x0f    /* in bEndpointAddress */
#define USB_ENDPOINT_DIR_MASK		0x80

#define USB_ENDPOINT_TYPE_MASK		0x03    /* in bmAttributes */
#define USB_ENDPOINT_TYPE_CONTROL	0
#define USB_ENDPOINT_TYPE_ISOCHRONOUS	1
#define USB_ENDPOINT_TYPE_BULK		2
#define USB_ENDPOINT_TYPE_INTERRUPT	3

/* Interface descriptor */
#define USB_MAXINTERFACES	32
struct usb_interface_descriptor {
	uint8_t  bLength;
	uint8_t  bDescriptorType;
	uint8_t  bInterfaceNumber;
	uint8_t  bAlternateSetting;
	uint8_t  bNumEndpoints;
	uint8_t  bInterfaceClass;
	uint8_t  bInterfaceSubClass;
	uint8_t  bInterfaceProtocol;
	uint8_t  iInterface;

	struct usb_endpoint_descriptor *endpoint;

	unsigned char *extra;	/* Extra descriptors */
	int extralen;
};

#define USB_MAXALTSETTING	128	/* Hard limit */
struct usb_interface {
	struct usb_interface_descriptor *altsetting;

	int num_altsetting;
};

/* Configuration descriptor information.. */
#define USB_MAXCONFIG		8
struct usb_config_descriptor {
	uint8_t  bLength;
	uint8_t  bDescriptorType;
	uint16_t wTotalLength;
	uint8_t  bNumInterfaces;
	uint8_t  bConfigurationValue;
	uint8_t  iConfiguration;
	uint8_t  bmAttributes;
	uint8_t  MaxPower;

	struct usb_interface *interface;

	unsigned char *extra;	/* Extra descriptors */
	int extralen;
};

/* Device descriptor */
struct usb_device_descriptor {
	uint8_t  bLength;
	uint8_t  bDescriptorType;
	uint16_t bcdUSB;
	uint8_t  bDeviceClass;
	uint8_t  bDeviceSubClass;
	uint8_t  bDeviceProtocol;
	uint8_t  bMaxPacketSize0;
	uint16_t idVendor;
	uint16_t idProduct;
	uint16_t bcdDevice;
	uint8_t  iManufacturer;
	uint8_t  iProduct;
	uint8_t  iSerialNumber;
	uint8_t  bNumConfigurations;
} __attribute__ ((packed));

struct usb_ctrl_setup {
	uint8_t  bRequestType;
	uint8_t  bRequest;
	uint16_t wValue;
	uint16_t wIndex;
	uint16_t wLength;
} __attribute__ ((packed));

/*
 * Standard requests
 */
#define USB_REQ_GET_STATUS		0x00
#define USB_REQ_CLEAR_FEATURE		0x01
/* 0x02 is reserved */
#define USB_REQ_SET_FEATURE		0x03
/* 0x04 is reserved */
#define USB_REQ_SET_ADDRESS		0x05
#define USB_REQ_GET_DESCRIPTOR		0x06
#define USB_REQ_SET_DESCRIPTOR		0x07
#define USB_REQ_GET_CONFIGURATION	0x08
#define USB_REQ_SET_CONFIGURATION	0x09
#define USB_REQ_GET_INTERFACE		0x0A
#define USB_REQ_SET_INTERFACE		0x0B
#define USB_REQ_SYNCH_FRAME		0x0C

#define USB_TYPE_STANDARD		(0x00 << 5)
#define USB_TYPE_CLASS			(0x01 << 5)
#define USB_TYPE_VENDOR			(0x02 << 5)
#define USB_TYPE_RESERVED		(0x03 << 5)

#define USB_RECIP_DEVICE		0x00
#define USB_RECIP_INTERFACE		0x01
#define USB_RECIP_ENDPOINT		0x02
#define USB_RECIP_OTHER			0x03

/*
 * Various libusb API related stuff
 */

#define USB_ENDPOINT_IN			0x80
#define USB_ENDPOINT_OUT		0x00

/* Error codes */
#define USB_ERROR_BEGIN			500000

/*
 * This is supposed to look weird. This file is generated from autoconf
 * and I didn't want to make this too complicated.
 */
#if @BIGENDIAN@
#define USB_LE16_TO_CPU(x) do { x = ((x & 0xff) << 8) | ((x & 0xff00) >> 8); } while(0)
#else
#define USB_LE16_TO_CPU(x)
#endif

/* Data types */
struct usb_device;
struct usb_bus;

/*
 * To maintain compatibility with applications already built with libusb,
 * we must only add entries to the end of this structure. NEVER delete or
 * move members and only change types if you really know what you're doing.
 */
#ifdef PATH_MAX
#define LIBUSB_PATH_MAX PATH_MAX
#else
#define LIBUSB_PATH_MAX 4096
#endif
struct usb_device {
  struct usb_device *next, *prev;

  char filename[LIBUSB_PATH_MAX + 1];

  struct usb_bus *bus;

  struct usb_device_descriptor descriptor;
  struct usb_config_descriptor *config;

  void *dev;		/* Darwin support */

  uint8_t devnum;

  unsigned char num_children;
  struct usb_device **children;
};

struct usb_bus {
  struct usb_bus *next, *prev;

  char dirname[LIBUSB_PATH_MAX + 1];

  struct usb_device *devices;
  uint32_t location;

  struct usb_device *root_dev;
};

struct usb_dev_handle;
typedef struct usb_dev_handle usb_dev_handle;

/* Variables */
extern struct usb_bus *usb_busses;

#ifdef __cplusplus
extern "C" {
#endif

/* Function prototypes */

/* usb.c */
usb_dev_handle *usb_open(struct usb_device *dev);
int usb_close(usb_dev_handle *dev);
int usb_get_string(usb_dev_handle *dev, int index, int langid, char *buf,
	size_t buflen);
int usb_get_string_simple(usb_dev_handle *dev, int index, char *buf,
	size_t buflen);

/* descriptors.c */
int usb_get_descriptor_by_endpoint(usb_dev_handle *udev, int ep,
	unsigned char type, unsigned char index, void *buf, int size);
int usb_get_descriptor(usb_dev_handle *udev, unsigned char type,
	unsigned char index, void *buf, int size);

/* <arch>.c */
int usb_bulk_write(usb_dev_handle *dev, int ep, const char *bytes, int size,
	int timeout);
int usb_bulk_read(usb_dev_handle *dev, int ep, char *bytes, int size,
	int timeout);
int usb_interrupt_write(usb_dev_handle *dev, int ep, const char *bytes, int size,
        int timeout);
int usb_interrupt_read(usb_dev_handle *dev, int ep, char *bytes, int size,
        int timeout);
int usb_control_msg(usb_dev_handle *dev, int requesttype, int request,
	int value, int index, char *bytes, int size, int timeout);
int usb_set_configuration(usb_dev_handle *dev, int configuration);
int usb_claim_interface(usb_dev_handle *dev, int interface);
int usb_release_interface(usb_dev_handle *dev, int interface);
int usb_set_altinterface(usb_dev_handle *dev, int alternate);
int usb_resetep(usb_dev_handle *dev, unsigned int ep);
int usb_clear_halt(usb_dev_handle *dev, unsigned int ep);
int usb_reset(usb_dev_handle *dev);

#if @LINUX_API@
#define LIBUSB_HAS_GET_DRIVER_NP 1
int usb_get_driver_np(usb_dev_handle *dev, int interface, char *name,
	unsigned int namelen);
#define LIBUSB_HAS_DETACH_KERNEL_DRIVER_NP 1
int usb_detach_kernel_driver_np(usb_dev_handle *dev, int interface);
#endif

char *usb_strerror(void);

void usb_init(void);
void usb_set_debug(int level);
int usb_find_busses(void);
int usb_find_devices(void);
struct usb_device *usb_device(usb_dev_handle *dev);
struct usb_bus *usb_get_busses(void);

#ifdef __cplusplus
}
#endif

#endif /* __USB_H__ */