xref: /freebsd-11-stable/lib/libusb/libusb.h

/* $FreeBSD: head/lib/libusb/libusb.h 195560 2009-07-10 14:15:53Z thompsa $ */
/*-
 * Copyright (c) 2009 Sylvestre Gallon. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef __LIBUSB_H__
#define	__LIBUSB_H__

#include <sys/time.h>
#include <sys/types.h>
#include <sys/endian.h>
#include <sys/queue.h>

#include <stdint.h>
#include <time.h>
#include <string.h>
#include <pthread.h>


#ifdef __cplusplus
extern	"C" {
#endif
#if 0
}					/* indent fix */

#endif

/* libusb enums */

enum libusb_class_code {
	LIBUSB_CLASS_PER_INTERFACE = 0,
	LIBUSB_CLASS_AUDIO = 1,
	LIBUSB_CLASS_COMM = 2,
	LIBUSB_CLASS_HID = 3,
	LIBUSB_CLASS_PTP = 6,
	LIBUSB_CLASS_PRINTER = 7,
	LIBUSB_CLASS_MASS_STORAGE = 8,
	LIBUSB_CLASS_HUB = 9,
	LIBUSB_CLASS_DATA = 10,
	LIBUSB_CLASS_VENDOR_SPEC = 0xff,
};

enum libusb_descriptor_type {
	LIBUSB_DT_DEVICE = 0x01,
	LIBUSB_DT_CONFIG = 0x02,
	LIBUSB_DT_STRING = 0x03,
	LIBUSB_DT_INTERFACE = 0x04,
	LIBUSB_DT_ENDPOINT = 0x05,
	LIBUSB_DT_HID = 0x21,
	LIBUSB_DT_REPORT = 0x22,
	LIBUSB_DT_PHYSICAL = 0x23,
	LIBUSB_DT_HUB = 0x29,
};

#define	LIBUSB_DT_DEVICE_SIZE		18
#define	LIBUSB_DT_CONFIG_SIZE		9
#define	LIBUSB_DT_INTERFACE_SIZE	9
#define	LIBUSB_DT_ENDPOINT_SIZE		7
#define	LIBUSB_DT_ENDPOINT_AUDIO_SIZE	9
#define	LIBUSB_DT_HUB_NONVAR_SIZE	7

#define	LIBUSB_ENDPOINT_ADDRESS_MASK	0x0f
#define	LIBUSB_ENDPOINT_DIR_MASK	0x80

enum libusb_endpoint_direction {
	LIBUSB_ENDPOINT_IN = 0x80,
	LIBUSB_ENDPOINT_OUT = 0x00,
};

#define	LIBUSB_TRANSFER_TYPE_MASK	0x03

enum libusb_transfer_type {
	LIBUSB_TRANSFER_TYPE_CONTROL = 0,
	LIBUSB_TRANSFER_TYPE_ISOCHRONOUS = 1,
	LIBUSB_TRANSFER_TYPE_BULK = 2,
	LIBUSB_TRANSFER_TYPE_INTERRUPT = 3,
};

enum libusb_standard_request {
	LIBUSB_REQUEST_GET_STATUS = 0x00,
	LIBUSB_REQUEST_CLEAR_FEATURE = 0x01,
	LIBUSB_REQUEST_SET_FEATURE = 0x03,
	LIBUSB_REQUEST_SET_ADDRESS = 0x05,
	LIBUSB_REQUEST_GET_DESCRIPTOR = 0x06,
	LIBUSB_REQUEST_SET_DESCRIPTOR = 0x07,
	LIBUSB_REQUEST_GET_CONFIGURATION = 0x08,
	LIBUSB_REQUEST_SET_CONFIGURATION = 0x09,
	LIBUSB_REQUEST_GET_INTERFACE = 0x0A,
	LIBUSB_REQUEST_SET_INTERFACE = 0x0B,
	LIBUSB_REQUEST_SYNCH_FRAME = 0x0C,
};

enum libusb_request_type {
	LIBUSB_REQUEST_TYPE_STANDARD = (0x00 << 5),
	LIBUSB_REQUEST_TYPE_CLASS = (0x01 << 5),
	LIBUSB_REQUEST_TYPE_VENDOR = (0x02 << 5),
	LIBUSB_REQUEST_TYPE_RESERVED = (0x03 << 5),
};

enum libusb_request_recipient {
	LIBUSB_RECIPIENT_DEVICE = 0x00,
	LIBUSB_RECIPIENT_INTERFACE = 0x01,
	LIBUSB_RECIPIENT_ENDPOINT = 0x02,
	LIBUSB_RECIPIENT_OTHER = 0x03,
};

#define	LIBUSB_ISO_SYNC_TYPE_MASK	0x0C

enum libusb_iso_sync_type {
	LIBUSB_ISO_SYNC_TYPE_NONE = 0,
	LIBUSB_ISO_SYNC_TYPE_ASYNC = 1,
	LIBUSB_ISO_SYNC_TYPE_ADAPTIVE = 2,
	LIBUSB_ISO_SYNC_TYPE_SYNC = 3,
};

#define	LIBUSB_ISO_USAGE_TYPE_MASK 0x30

enum libusb_iso_usage_type {
	LIBUSB_ISO_USAGE_TYPE_DATA = 0,
	LIBUSB_ISO_USAGE_TYPE_FEEDBACK = 1,
	LIBUSB_ISO_USAGE_TYPE_IMPLICIT = 2,
};

enum libusb_error {
	LIBUSB_SUCCESS = 0,
	LIBUSB_ERROR_IO = -1,
	LIBUSB_ERROR_INVALID_PARAM = -2,
	LIBUSB_ERROR_ACCESS = -3,
	LIBUSB_ERROR_NO_DEVICE = -4,
	LIBUSB_ERROR_NOT_FOUND = -5,
	LIBUSB_ERROR_BUSY = -6,
	LIBUSB_ERROR_TIMEOUT = -7,
	LIBUSB_ERROR_OVERFLOW = -8,
	LIBUSB_ERROR_PIPE = -9,
	LIBUSB_ERROR_INTERRUPTED = -10,
	LIBUSB_ERROR_NO_MEM = -11,
	LIBUSB_ERROR_NOT_SUPPORTED = -12,
	LIBUSB_ERROR_OTHER = -99,
};

enum libusb_transfer_status {
	LIBUSB_TRANSFER_COMPLETED,
	LIBUSB_TRANSFER_ERROR,
	LIBUSB_TRANSFER_TIMED_OUT,
	LIBUSB_TRANSFER_CANCELLED,
	LIBUSB_TRANSFER_STALL,
	LIBUSB_TRANSFER_NO_DEVICE,
	LIBUSB_TRANSFER_OVERFLOW,
};

enum libusb_transfer_flags {
	LIBUSB_TRANSFER_SHORT_NOT_OK = 1 << 0,
	LIBUSB_TRANSFER_FREE_BUFFER = 1 << 1,
	LIBUSB_TRANSFER_FREE_TRANSFER = 1 << 2,
};

enum libusb_debug_level {
	LIBUSB_DEBUG_NO=0,
	LIBUSB_DEBUG_FUNCTION=1,
	LIBUSB_DEBUG_TRANSFER=2,
};

/* internal structures */

typedef struct libusb_pollfd {
	int	fd;
	short	events;
}	libusb_pollfd;

struct usb_pollfd {
	TAILQ_ENTRY(usb_pollfd) list;
	struct libusb_pollfd pollfd;
};

struct usb_transfer {
	TAILQ_ENTRY(usb_transfer) list;
	int num_iso_packets;
	struct timeval timeout;
	int transferred;
	uint8_t flags;
};

struct usb_ep_tr {
	TAILQ_ENTRY(usb_ep_tr) list;
	uint8_t addr;
	uint8_t idx;
	uint8_t flags;
	void *os_priv;
};
/* libusb structures */

typedef void (*libusb_pollfd_added_cb) (int fd, short events, void *user_data);
typedef void (*libusb_pollfd_removed_cb) (int fd, void *user_data);

typedef struct libusb_context {
	int	debug;
	int	debug_fixed;

	int	ctrl_pipe[2];

	TAILQ_HEAD(usb_devs_list, libusb_device) usb_devs;
	pthread_mutex_t usb_devs_lock;

	TAILQ_HEAD(open_devs_list, libusb_device_handle) open_devs;
	pthread_mutex_t open_devs_lock;

	TAILQ_HEAD(flying_transfers_list, usb_transfer) flying_transfers;
	pthread_mutex_t flying_transfers_lock;

	TAILQ_HEAD(pollfds_list, usb_pollfd) pollfds;
	pthread_mutex_t pollfds_lock;

	unsigned int pollfd_modify;
	pthread_mutex_t pollfd_modify_lock;

	libusb_pollfd_added_cb fd_added_cb;
	libusb_pollfd_removed_cb fd_removed_cb;
	void   *fd_cb_user_data;

	pthread_mutex_t events_lock;
	int	event_handler_active;

	pthread_mutex_t event_waiters_lock;
	pthread_cond_t event_waiters_cond;
}	libusb_context;

typedef struct libusb_device {
	pthread_mutex_t lock;
	int	refcnt;

	struct libusb_context *ctx;

	uint8_t	bus_number;
	uint8_t	device_address;
	uint8_t	num_configurations;

	TAILQ_ENTRY(libusb_device) list;
	unsigned long session_data;
	void   *os_priv;
}	libusb_device;

typedef struct libusb_device_handle {
	pthread_mutex_t lock;
	unsigned long claimed_interfaces;

	TAILQ_ENTRY(libusb_device_handle) list;
	struct libusb_device *dev;
	void   *os_priv;
	TAILQ_HEAD(ep_list, usb_ep_tr) ep_list;
}	libusb_device_handle;

typedef struct libusb_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;
}	libusb_device_descriptor;

typedef struct libusb_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;
	int	extra_length;
}	libusb_endpoint_descriptor __aligned(sizeof(void *));

typedef struct libusb_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 libusb_endpoint_descriptor *endpoint;
	unsigned char *extra;
	int	extra_length;
}	libusb_interface_descriptor __aligned(sizeof(void *));

typedef struct libusb_interface {
	struct libusb_interface_descriptor *altsetting;
	int	num_altsetting;
}	libusb_interface __aligned(sizeof(void *));

typedef struct libusb_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 libusb_interface *interface;
	unsigned char *extra;
	int	extra_length;
}	libusb_config_descriptor __aligned(sizeof(void *));

typedef struct libusb_control_setup {
	uint8_t	bmRequestType;
	uint8_t	bRequest;
	uint16_t wValue;
	uint16_t wIndex;
	uint16_t wLength;
}	libusb_control_setup;

typedef struct libusb_iso_packet_descriptor {
	unsigned int length;
	unsigned int actual_length;
	enum libusb_transfer_status status;
}	libusb_iso_packet_descriptor __aligned(sizeof(void *));

struct libusb_transfer;

typedef void (*libusb_transfer_cb_fn) (struct libusb_transfer *transfer);

typedef struct libusb_transfer {
	libusb_device_handle *dev_handle;
	uint8_t	flags;
	unsigned int endpoint;
	unsigned char type;
	unsigned int timeout;
	enum libusb_transfer_status status;
	int	length;
	int	actual_length;
	libusb_transfer_cb_fn callback;
	void   *user_data;
	unsigned char *buffer;
	void *os_priv;
	int	num_iso_packets;
	struct libusb_iso_packet_descriptor iso_packet_desc[0];
}	libusb_transfer __aligned(sizeof(void *));

/* Library initialisation */

void	libusb_set_debug(libusb_context * ctx, int level);
int	libusb_init(libusb_context ** context);
void	libusb_exit(struct libusb_context *ctx);

/* Device handling and enumeration */

ssize_t libusb_get_device_list(libusb_context * ctx, libusb_device *** list);
void	libusb_free_device_list(libusb_device ** list, int unref_devices);
uint8_t	libusb_get_bus_number(libusb_device * dev);
uint8_t	libusb_get_device_address(libusb_device * dev);
int	libusb_clear_halt(libusb_device_handle *devh, unsigned char endpoint);
int	libusb_get_max_packet_size(libusb_device * dev, unsigned char endpoint);
libusb_device *libusb_ref_device(libusb_device * dev);
void	libusb_unref_device(libusb_device * dev);
int	libusb_open(libusb_device * dev, libusb_device_handle ** devh);
libusb_device_handle *libusb_open_device_with_vid_pid(libusb_context * ctx, uint16_t vendor_id, uint16_t product_id);
void	libusb_close(libusb_device_handle * devh);
libusb_device *libusb_get_device(libusb_device_handle * devh);
int	libusb_get_configuration(libusb_device_handle * devh, int *config);
int	libusb_set_configuration(libusb_device_handle * devh, int configuration);
int	libusb_claim_interface(libusb_device_handle * devh, int interface_number);
int	libusb_release_interface(libusb_device_handle * devh, int interface_number);
int 	libusb_kernel_driver_active(libusb_device_handle * devh, int interface);
int 	libusb_detach_kernel_driver(libusb_device_handle * devh, int interface);
int 	libusb_attach_kernel_driver(libusb_device_handle * devh, int interface);
int	libusb_set_interface_alt_setting(libusb_device_handle * devh, int interface_number, int alternate_setting);

/* USB Descriptors */

int	libusb_get_device_descriptor(libusb_device * dev, struct libusb_device_descriptor *desc);
int	libusb_get_active_config_descriptor(libusb_device * dev, struct libusb_config_descriptor **config);
int	libusb_get_config_descriptor(libusb_device * dev, uint8_t config_index, struct libusb_config_descriptor **config);
int	libusb_get_config_descriptor_by_value(libusb_device * dev, uint8_t bConfigurationValue, struct libusb_config_descriptor **config);
void	libusb_free_config_descriptor(struct libusb_config_descriptor *config);
int	libusb_get_string_descriptor_ascii(libusb_device_handle * dev, uint8_t desc_index, unsigned char *data, int length);

/* Asynchronous device I/O*/

struct libusb_transfer *libusb_alloc_transfer(int iso_packets);
void	libusb_free_transfer(struct libusb_transfer *transfer);
int	libusb_submit_transfer(struct libusb_transfer *transfer);
int	libusb_cancel_transfer(struct libusb_transfer *transfer);
unsigned char *libusb_get_iso_packet_buffer_simple(struct libusb_transfer *transfer, unsigned int packet);

/* Polling and timing */

int	libusb_try_lock_events(libusb_context * ctx);
void	libusb_lock_events(libusb_context * ctx);
void	libusb_unlock_events(libusb_context * ctx);
int	libusb_event_handling_ok(libusb_context * ctx);
int	libusb_event_handler_active(libusb_context * ctx);
void	libusb_lock_event_waiters(libusb_context * ctx);
void	libusb_unlock_event_waiters(libusb_context * ctx);
int	libusb_wait_for_event(libusb_context * ctx, struct timeval *tv);
int	libusb_handle_events_timeout(libusb_context * ctx, struct timeval *tv);
int	libusb_handle_events(libusb_context * ctx);
int	libusb_handle_events_locked(libusb_context * ctx, struct timeval *tv);
int	libusb_get_next_timeout(libusb_context * ctx, struct timeval *tv);
void	libusb_set_pollfd_notifiers(libusb_context * ctx, libusb_pollfd_added_cb added_cb, libusb_pollfd_removed_cb removed_cb, void *user_data);
struct libusb_pollfd **libusb_get_pollfds(libusb_context * ctx);

/* Synchronous device I/O */

int	libusb_control_transfer(libusb_device_handle * devh, uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, unsigned char *data, uint16_t wLength, unsigned int timeout);
int	libusb_bulk_transfer(struct libusb_device_handle *devh, unsigned char endpoint, unsigned char *data, int length, int *transferred, unsigned int timeout);
int	libusb_interrupt_transfer(struct libusb_device_handle *devh, unsigned char endpoint, unsigned char *data, int length, int *transferred, unsigned int timeout);

#if 0
{					/* indent fix */
#endif
#ifdef __cplusplus
}

#endif

#endif					/* __LIBUSB_H__ */