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kernel/linux-rt-4.4.41/include/uapi/xen/evtchn.h 2.9 KB
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  /******************************************************************************
   * evtchn.h
   *
   * Interface to /dev/xen/evtchn.
   *
   * Copyright (c) 2003-2005, K A Fraser
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License version 2
   * as published by the Free Software Foundation; or, when distributed
   * separately from the Linux kernel or incorporated into other
   * software packages, subject to the following license:
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this source file (the "Software"), to deal in the Software without
   * restriction, including without limitation the rights to use, copy, modify,
   * merge, publish, distribute, sublicense, and/or sell copies of the Software,
   * and to permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
   * IN THE SOFTWARE.
   */
  
  #ifndef __LINUX_PUBLIC_EVTCHN_H__
  #define __LINUX_PUBLIC_EVTCHN_H__
  
  /*
   * Bind a fresh port to VIRQ @virq.
   * Return allocated port.
   */
  #define IOCTL_EVTCHN_BIND_VIRQ				\
  	_IOC(_IOC_NONE, 'E', 0, sizeof(struct ioctl_evtchn_bind_virq))
  struct ioctl_evtchn_bind_virq {
  	unsigned int virq;
  };
  
  /*
   * Bind a fresh port to remote <@remote_domain, @remote_port>.
   * Return allocated port.
   */
  #define IOCTL_EVTCHN_BIND_INTERDOMAIN			\
  	_IOC(_IOC_NONE, 'E', 1, sizeof(struct ioctl_evtchn_bind_interdomain))
  struct ioctl_evtchn_bind_interdomain {
  	unsigned int remote_domain, remote_port;
  };
  
  /*
   * Allocate a fresh port for binding to @remote_domain.
   * Return allocated port.
   */
  #define IOCTL_EVTCHN_BIND_UNBOUND_PORT			\
  	_IOC(_IOC_NONE, 'E', 2, sizeof(struct ioctl_evtchn_bind_unbound_port))
  struct ioctl_evtchn_bind_unbound_port {
  	unsigned int remote_domain;
  };
  
  /*
   * Unbind previously allocated @port.
   */
  #define IOCTL_EVTCHN_UNBIND				\
  	_IOC(_IOC_NONE, 'E', 3, sizeof(struct ioctl_evtchn_unbind))
  struct ioctl_evtchn_unbind {
  	unsigned int port;
  };
  
  /*
   * Unbind previously allocated @port.
   */
  #define IOCTL_EVTCHN_NOTIFY				\
  	_IOC(_IOC_NONE, 'E', 4, sizeof(struct ioctl_evtchn_notify))
  struct ioctl_evtchn_notify {
  	unsigned int port;
  };
  
  /* Clear and reinitialise the event buffer. Clear error condition. */
  #define IOCTL_EVTCHN_RESET				\
  	_IOC(_IOC_NONE, 'E', 5, 0)
  
  #endif /* __LINUX_PUBLIC_EVTCHN_H__ */