2 * Internal header for libusb
3 * Copyright (C) 2007 Daniel Drake <dsd@gentoo.org>
4 * Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com>
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.
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.
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
28 #include <sys/ioctl.h>
34 #define USBFS_PATH "/dev/bus/usb"
35 #define DEVICE_DESC_LENGTH 18
37 #define USB_MAXENDPOINTS 32
38 #define USB_MAXINTERFACES 32
39 #define USB_MAXCONFIG 8
42 struct list_head *prev, *next;
45 /* Get an entry from the list
46 * ptr - the address of this list_head element in "type"
47 * type - the data type that contains "member"
48 * member - the list_head element in "type"
50 #define list_entry(ptr, type, member) \
51 ((type *)((char *)(ptr) - (unsigned long)(&((type *)0L)->member)))
53 /* Get each entry from a list
54 * pos - A structure pointer has a "member" element
56 * member - the list_head element in "pos"
58 #define list_for_each_entry(pos, head, member) \
59 for (pos = list_entry((head)->next, typeof(*pos), member); \
60 &pos->member != (head); \
61 pos = list_entry(pos->member.next, typeof(*pos), member))
63 #define list_for_each_entry_safe(pos, n, head, member) \
64 for (pos = list_entry((head)->next, typeof(*pos), member), \
65 n = list_entry(pos->member.next, typeof(*pos), member); \
66 &pos->member != (head); \
67 pos = n, n = list_entry(n->member.next, typeof(*n), member))
69 #define list_empty(entry) ((entry)->next == (entry))
71 static inline void list_init(struct list_head *entry)
73 entry->prev = entry->next = entry;
76 static inline void list_add(struct list_head *entry, struct list_head *head)
78 entry->next = head->next;
81 head->next->prev = entry;
85 static inline void list_add_tail(struct list_head *entry,
86 struct list_head *head)
89 entry->prev = head->prev;
91 head->prev->next = entry;
95 static inline void list_del(struct list_head *entry)
97 entry->next->prev = entry->prev;
98 entry->prev->next = entry->next;
101 #define container_of(ptr, type, member) ({ \
102 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
103 (type *)( (char *)__mptr - offsetof(type,member) );})
105 #define bswap16(x) (((x & 0xff) << 8) | (x >> 8))
106 #if __BYTE_ORDER == __LITTLE_ENDIAN
107 #define cpu_to_le16(x) (x)
108 #define le16_to_cpu(x) (x)
109 #elif __BYTE_ORDER == __BIG_ENDIAN
110 #define le16_to_cpu(x) bswap16(x)
111 #define cpu_to_le16(x) bswap16(x)
113 #error "Unrecognized endianness"
116 #define MIN(a, b) ((a) < (b) ? (a) : (b))
117 #define MAX(a, b) ((a) > (b) ? (a) : (b))
119 #define TIMESPEC_IS_SET(ts) ((ts)->tv_sec != 0 || (ts)->tv_nsec != 0)
121 enum usbi_log_level {
128 void usbi_log(enum usbi_log_level, const char *function, const char *format, ...);
130 #ifdef ENABLE_LOGGING
131 #define _usbi_log(level, fmt...) usbi_log(level, __FUNCTION__, fmt)
133 #define _usbi_log(level, fmt...)
136 #ifdef ENABLE_DEBUG_LOGGING
137 #define usbi_dbg(fmt...) _usbi_log(LOG_LEVEL_DEBUG, fmt)
139 #define usbi_dbg(fmt...)
142 #define usbi_info(fmt...) _usbi_log(LOG_LEVEL_INFO, fmt)
143 #define usbi_warn(fmt...) _usbi_log(LOG_LEVEL_WARNING, fmt)
144 #define usbi_err(fmt...) _usbi_log(LOG_LEVEL_ERROR, fmt)
147 struct list_head list;
149 struct libusb_dev_descriptor desc;
150 struct libusb_config_descriptor *config;
153 struct libusb_dev_handle {
154 struct list_head list;
155 struct libusb_dev *dev;
159 enum libusb_urb_type {
164 #define LIBUSB_URBH_DATA_BELONGS_TO_USER (1<<0)
165 #define LIBUSB_URBH_SYNC_CANCELLED (1<<1)
166 #define LIBUSB_URBH_TIMED_OUT (1<<2)
168 struct libusb_urb_handle {
169 struct libusb_dev_handle *devh;
171 struct list_head list;
172 struct timespec timeout;
174 unsigned char urb_type;
175 unsigned char endpoint;
178 unsigned char *buffer;
186 /* All standard descriptors have these 2 fields in common */
187 struct usb_descriptor_header {
189 uint8_t bDescriptorType;
192 /* shared data and functions */
194 extern struct list_head open_devs;
196 int usbi_io_init(int _signum);
197 void usbi_io_exit(void);
199 int usbi_parse_descriptor(unsigned char *source, char *descriptor, void *dest);
200 int usbi_parse_configuration(struct libusb_config_descriptor *config,
201 unsigned char *buffer);