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/*
* 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 0
#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.
*/
struct usb_device {
struct usb_device *next, *prev;
char filename[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[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 1
#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__ */
