text: /*
   * usbfs header structures
   * Copyright © 2007 Daniel Drake <dsd@gentoo.org>
   * Copyright © 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 LIBUSB_USBFS_H
  #define LIBUSB_USBFS_H
  
  #include <linux/magic.h>
  #include <linux/types.h>
  
  #define SYSFS_MOUNT_PATH	"/sys"
  #define SYSFS_DEVICE_PATH	SYSFS_MOUNT_PATH "/bus/usb/devices"
  
  struct usbfs_ctrltransfer {
  	/* keep in sync with usbdevice_fs.h:usbdevfs_ctrltransfer */
  	__u8 bmRequestType;
  	__u8 bRequest;
  	__u16 wValue;
  	__u16 wIndex;
  	__u16 wLength;
  	__u32 timeout;	/* in milliseconds */
  
  	/* pointer to data */
  	void *data;
  };
  
  struct usbfs_setinterface {
  	/* keep in sync with usbdevice_fs.h:usbdevfs_setinterface */
  	unsigned int interface;
  	unsigned int altsetting;
  };
  
  #define USBFS_MAXDRIVERNAME		255
  
  struct usbfs_getdriver {
  	unsigned int interface;
  	char driver[USBFS_MAXDRIVERNAME + 1];
  };
  
  #define USBFS_URB_SHORT_NOT_OK		0x01
  #define USBFS_URB_ISO_ASAP		0x02
  #define USBFS_URB_BULK_CONTINUATION	0x04
  #define USBFS_URB_QUEUE_BULK		0x10
  #define USBFS_URB_ZERO_PACKET		0x40
  
  #define USBFS_URB_TYPE_ISO		0
  #define USBFS_URB_TYPE_INTERRUPT	1
  #define USBFS_URB_TYPE_CONTROL		2
  #define USBFS_URB_TYPE_BULK		3
  
  struct usbfs_iso_packet_desc {
  	unsigned int length;
  	unsigned int actual_length;
  	unsigned int status;
  };
  
  #define MAX_BULK_BUFFER_LENGTH		16384
  #define MAX_CTRL_BUFFER_LENGTH		4096
  
  #define MAX_ISO_PACKETS_PER_URB		128
  
  struct usbfs_urb {
  	unsigned char type;
  	unsigned char endpoint;
  	int status;
  	unsigned int flags;
  	void *buffer;
  	int buffer_length;
  	int actual_length;
  	int start_frame;
  	union {
  		int number_of_packets;	/* Only used for isoc urbs */
  		unsigned int stream_id;	/* Only used with bulk streams */
  	};
  	int error_count;
  	unsigned int signr;
  	void *usercontext;
  	struct usbfs_iso_packet_desc iso_frame_desc[0];
  };
  
  struct usbfs_connectinfo {
  	unsigned int devnum;
  	unsigned char slow;
  };
  
  struct usbfs_ioctl {
  	int ifno;	/* interface 0..N ; negative numbers reserved */
  	int ioctl_code;	/* MUST encode size + direction of data so the
  			 * macros in <asm/ioctl.h> give correct values */
  	void *data;	/* param buffer (in, or out) */
  };
  
  #define USBFS_CAP_ZERO_PACKET			0x01
  #define USBFS_CAP_BULK_CONTINUATION		0x02
  #define USBFS_CAP_NO_PACKET_SIZE_LIM		0x04
  #define USBFS_CAP_BULK_SCATTER_GATHER		0x08
  #define USBFS_CAP_REAP_AFTER_DISCONNECT		0x10
  
  #define USBFS_DISCONNECT_CLAIM_IF_DRIVER	0x01
  #define USBFS_DISCONNECT_CLAIM_EXCEPT_DRIVER	0x02
  
  struct usbfs_disconnect_claim {
  	unsigned int interface;
  	unsigned int flags;
  	char driver[USBFS_MAXDRIVERNAME + 1];
  };
  
  struct usbfs_streams {
  	unsigned int num_streams; /* Not used by USBDEVFS_FREE_STREAMS */
  	unsigned int num_eps;
  	unsigned char eps[0];
  };
  
  #define IOCTL_USBFS_CONTROL		_IOWR('U', 0, struct usbfs_ctrltransfer)
  #define IOCTL_USBFS_SETINTERFACE	_IOR('U', 4, struct usbfs_setinterface)
  #define IOCTL_USBFS_SETCONFIGURATION	_IOR('U', 5, unsigned int)
  #define IOCTL_USBFS_GETDRIVER		_IOW('U', 8, struct usbfs_getdriver)
  #define IOCTL_USBFS_SUBMITURB		_IOR('U', 10, struct usbfs_urb)
  #define IOCTL_USBFS_DISCARDURB		_IO('U', 11)
  #define IOCTL_USBFS_REAPURBNDELAY	_IOW('U', 13, void *)
  #define IOCTL_USBFS_CLAIMINTERFACE	_IOR('U', 15, unsigned int)
  #define IOCTL_USBFS_RELEASEINTERFACE	_IOR('U', 16, unsigned int)
  #define IOCTL_USBFS_CONNECTINFO		_IOW('U', 17, struct usbfs_connectinfo)
  #define IOCTL_USBFS_IOCTL		_IOWR('U', 18, struct usbfs_ioctl)
  #define IOCTL_USBFS_RESET		_IO('U', 20)
  #define IOCTL_USBFS_CLEAR_HALT		_IOR('U', 21, unsigned int)
  #define IOCTL_USBFS_DISCONNECT		_IO('U', 22)
  #define IOCTL_USBFS_CONNECT		_IO('U', 23)
  #define IOCTL_USBFS_GET_CAPABILITIES	_IOR('U', 26, __u32)
  #define IOCTL_USBFS_DISCONNECT_CLAIM	_IOR('U', 27, struct usbfs_disconnect_claim)
  #define IOCTL_USBFS_ALLOC_STREAMS	_IOR('U', 28, struct usbfs_streams)
  #define IOCTL_USBFS_FREE_STREAMS	_IOR('U', 29, struct usbfs_streams)
  
  extern usbi_mutex_static_t linux_hotplug_lock;
  
  #ifdef HAVE_LIBUDEV
  int linux_udev_start_event_monitor(void);
  int linux_udev_stop_event_monitor(void);
  int linux_udev_scan_devices(struct libusb_context *ctx);
  void linux_udev_hotplug_poll(void);
  #else
  int linux_netlink_start_event_monitor(void);
  int linux_netlink_stop_event_monitor(void);
  void linux_netlink_hotplug_poll(void);
  #endif
  
  static inline int linux_start_event_monitor(void)
  {
  #if defined(HAVE_LIBUDEV)
  	return linux_udev_start_event_monitor();
  #elif !defined(__ANDROID__)
  	return linux_netlink_start_event_monitor();
  #else
  	return LIBUSB_SUCCESS;
  #endif
  }
  
  static inline void linux_stop_event_monitor(void)
  {
  #if defined(HAVE_LIBUDEV)
  	linux_udev_stop_event_monitor();
  #elif !defined(__ANDROID__)
  	linux_netlink_stop_event_monitor();
  #endif
  }
  
  static inline void linux_hotplug_poll(void)
  {
  #if defined(HAVE_LIBUDEV)
  	linux_udev_hotplug_poll();
  #elif !defined(__ANDROID__)
  	linux_netlink_hotplug_poll();
  #endif
  }
  
  void linux_hotplug_enumerate(uint8_t busnum, uint8_t devaddr, const char *sys_name);
  void linux_device_disconnected(uint8_t busnum, uint8_t devaddr);
  
  int linux_get_device_address(struct libusb_context *ctx, int detached,
  	uint8_t *busnum, uint8_t *devaddr, const char *dev_node,
  	const char *sys_name, int fd);
  int linux_enumerate_device(struct libusb_context *ctx,
  	uint8_t busnum, uint8_t devaddr, const char *sysfs_dir);
  
  #endif
  