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      1 /* $NetBSD: xenio3.h,v 1.4 2015/09/07 03:49:46 dholland Exp $ */
      2 /******************************************************************************
      3  * evtchn.h
      4  *
      5  * Interface to /dev/xen/evtchn.
      6  *
      7  * Copyright (c) 2003-2005, K A Fraser
      8  *
      9  * This file may be distributed separately from the Linux kernel, or
     10  * incorporated into other software packages, subject to the following license:
     11  *
     12  * Permission is hereby granted, free of charge, to any person obtaining a copy
     13  * of this source file (the "Software"), to deal in the Software without
     14  * restriction, including without limitation the rights to use, copy, modify,
     15  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
     16  * and to permit persons to whom the Software is furnished to do so, subject to
     17  * the following conditions:
     18  *
     19  * The above copyright notice and this permission notice shall be included in
     20  * all copies or substantial portions of the Software.
     21  *
     22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     23  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     25  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     26  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     27  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     28  * IN THE SOFTWARE.
     29  */
     30 
     31 #ifndef __XEN_XENIO3_H__
     32 #define __XEN_XENIO3_H__
     33 
     34 #include <sys/ioccom.h>
     35 
     36 /*
     37  * Bind a fresh port to VIRQ @virq.
     38  * Return allocated port.
     39  */
     40 #define IOCTL_EVTCHN_BIND_VIRQ				\
     41 	_IOWR('E', 4, struct ioctl_evtchn_bind_virq)
     42 struct ioctl_evtchn_bind_virq {
     43 	unsigned int virq;
     44 	unsigned int port;
     45 };
     46 
     47 /*
     48  * Bind a fresh port to remote <@remote_domain, @remote_port>.
     49  * Return allocated port.
     50  */
     51 #define IOCTL_EVTCHN_BIND_INTERDOMAIN			\
     52 	_IOWR('E', 5, struct ioctl_evtchn_bind_interdomain)
     53 struct ioctl_evtchn_bind_interdomain {
     54 	unsigned int remote_domain, remote_port;
     55 	unsigned int port;
     56 };
     57 
     58 /*
     59  * Allocate a fresh port for binding to @remote_domain.
     60  * Return allocated port.
     61  */
     62 #define IOCTL_EVTCHN_BIND_UNBOUND_PORT			\
     63 	_IOWR('E', 6, struct ioctl_evtchn_bind_unbound_port)
     64 struct ioctl_evtchn_bind_unbound_port {
     65 	unsigned int remote_domain;
     66 	unsigned int port;
     67 };
     68 
     69 /*
     70  * Unbind previously allocated @port.
     71  */
     72 #define IOCTL_EVTCHN_UNBIND				\
     73 	_IOW('E', 7, struct ioctl_evtchn_unbind)
     74 struct ioctl_evtchn_unbind {
     75 	unsigned int port;
     76 };
     77 
     78 /*
     79  * Send event to previously allocated @port.
     80  */
     81 #define IOCTL_EVTCHN_NOTIFY				\
     82 	_IOW('E', 8, struct ioctl_evtchn_notify)
     83 struct ioctl_evtchn_notify {
     84 	unsigned int port;
     85 };
     86 
     87 /* Clear and reinitialise the event buffer. Clear error condition. */
     88 #define IOCTL_EVTCHN_RESET				\
     89 	_IO('E', 9)
     90 
     91 #endif /* __XEN_XENIO3_H__ */
     92