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/*
* Internal header for libusb
* Copyright (C) 2007 Daniel Drake <dsd@gentoo.org>
* Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __LIBUSBI_H__
#define __LIBUSBI_H__
#include <config.h>
#include <endian.h>
#include <stddef.h>
#include <sys/ioctl.h>
#include <time.h>
#include <libusb.h>
#include <usbfs.h>
#define USBFS_PATH "/dev/bus/usb"
#define DEVICE_DESC_LENGTH 18
#define USB_MAXENDPOINTS 32
#define USB_MAXINTERFACES 32
#define USB_MAXCONFIG 8
struct list_head {
struct list_head *prev, *next;
};
/* Get an entry from the list
* ptr - the address of this list_head element in "type"
* type - the data type that contains "member"
* member - the list_head element in "type"
*/
#define list_entry(ptr, type, member) \
((type *)((char *)(ptr) - (unsigned long)(&((type *)0L)->member)))
/* Get each entry from a list
* pos - A structure pointer has a "member" element
* head - list head
* member - the list_head element in "pos"
*/
#define list_for_each_entry(pos, head, member) \
for (pos = list_entry((head)->next, typeof(*pos), member); \
&pos->member != (head); \
pos = list_entry(pos->member.next, typeof(*pos), member))
#define list_for_each_entry_safe(pos, n, head, member) \
for (pos = list_entry((head)->next, typeof(*pos), member), \
n = list_entry(pos->member.next, typeof(*pos), member); \
&pos->member != (head); \
pos = n, n = list_entry(n->member.next, typeof(*n), member))
#define list_empty(entry) ((entry)->next == (entry))
static inline void list_init(struct list_head *entry)
{
entry->prev = entry->next = entry;
}
static inline void list_add(struct list_head *entry, struct list_head *head)
{
entry->next = head->next;
entry->prev = head;
head->next->prev = entry;
head->next = entry;
}
static inline void list_add_tail(struct list_head *entry,
struct list_head *head)
{
entry->next = head;
entry->prev = head->prev;
head->prev->next = entry;
head->prev = entry;
}
static inline void list_del(struct list_head *entry)
{
entry->next->prev = entry->prev;
entry->prev->next = entry->next;
}
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
#define bswap16(x) (((x & 0xff) << 8) | (x >> 8))
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define cpu_to_le16(x) (x)
#define le16_to_cpu(x) (x)
#elif __BYTE_ORDER == __BIG_ENDIAN
#define le16_to_cpu(x) bswap16(x)
#define cpu_to_le16(x) bswap16(x)
#else
#error "Unrecognized endianness"
#endif
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define TIMESPEC_IS_SET(ts) ((ts)->tv_sec != 0 || (ts)->tv_nsec != 0)
enum usbi_log_level {
LOG_LEVEL_DEBUG,
LOG_LEVEL_INFO,
LOG_LEVEL_WARNING,
LOG_LEVEL_ERROR,
};
void usbi_log(enum usbi_log_level, const char *function, const char *format, ...);
#ifdef ENABLE_LOGGING
#define _usbi_log(level, fmt...) usbi_log(level, __FUNCTION__, fmt)
#else
#define _usbi_log(level, fmt...)
#endif
#ifdef ENABLE_DEBUG_LOGGING
#define usbi_dbg(fmt...) _usbi_log(LOG_LEVEL_DEBUG, fmt)
#else
#define usbi_dbg(fmt...)
#endif
#define usbi_info(fmt...) _usbi_log(LOG_LEVEL_INFO, fmt)
#define usbi_warn(fmt...) _usbi_log(LOG_LEVEL_WARNING, fmt)
#define usbi_err(fmt...) _usbi_log(LOG_LEVEL_ERROR, fmt)
struct libusb_dev {
struct list_head list;
char *nodepath;
struct libusb_dev_descriptor desc;
struct libusb_config_descriptor *config;
};
struct libusb_dev_handle {
struct list_head list;
struct libusb_dev *dev;
int fd;
};
enum libusb_urb_type {
LIBUSB_URB_CONTROL,
LIBUSB_URB_BULK,
};
#define LIBUSB_URBH_DATA_BELONGS_TO_USER (1<<0)
#define LIBUSB_URBH_SYNC_CANCELLED (1<<1)
#define LIBUSB_URBH_TIMED_OUT (1<<2)
struct libusb_urb_handle {
struct libusb_dev_handle *devh;
struct usb_urb urb;
struct list_head list;
struct timespec timeout;
timer_t timer;
unsigned char urb_type;
unsigned char endpoint;
int transfer_len;
int transferred;
unsigned char *buffer;
void *callback;
void *user_data;
uint8_t flags;
};
/* bus structures */
/* All standard descriptors have these 2 fields in common */
struct usb_descriptor_header {
uint8_t bLength;
uint8_t bDescriptorType;
};
/* shared data and functions */
extern struct list_head open_devs;
int usbi_io_init(int _signum);
void usbi_io_exit(void);
int usbi_parse_descriptor(unsigned char *source, char *descriptor, void *dest);
int usbi_parse_configuration(struct libusb_config_descriptor *config,
unsigned char *buffer);
#endif
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