usr/src/uts/common/xen/sys/evtchn.h

   1 /******************************************************************************
   2  * evtchn.h
   3  *
   4  * Interface to /dev/xen/evtchn.
   5  *
   6  * Copyright (c) 2003-2005, K A Fraser
   7  *
   8  * This file may be distributed separately from the Linux kernel, or
   9  * incorporated into other software packages, subject to the following license:
  10  *
  11  * Permission is hereby granted, free of charge, to any person obtaining a copy
  12  * of this source file (the "Software"), to deal in the Software without
  13  * restriction, including without limitation the rights to use, copy, modify,
  14  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  15  * and to permit persons to whom the Software is furnished to do so, subject to
  16  * the following conditions:
  17  *
  18  * The above copyright notice and this permission notice shall be included in
  19  * all copies or substantial portions of the Software.
  20  *
  21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  22  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  23  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  24  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  25  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  26  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  27  * IN THE SOFTWARE.
  28  */
  29
  30 /*
  31  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  32  * Use is subject to license terms.
  33  */
  34
  35 #ifndef _XEN_SYS_EVTCHN_H
  36 #define _XEN_SYS_EVTCHN_H
  37
  38 #pragma ident   "%Z%%M% %I%     %E% SMI"
  39
  40 #define _IOC_NONE       0
  41 #define _IOC(flag, letter, inum, size)  ((letter) << 8 | (inum))
  42
  43 /*
  44  * Bind a fresh port to VIRQ @virq.
  45  * Return allocated port.
  46  */
  47 #define IOCTL_EVTCHN_BIND_VIRQ                          \
  48         _IOC(_IOC_NONE, 'E', 0, sizeof(struct ioctl_evtchn_bind_virq))
  49 struct ioctl_evtchn_bind_virq {
  50         unsigned int virq;
  51 };
  52
  53 /*
  54  * Bind a fresh port to remote <@remote_domain, @remote_port>.
  55  * Return allocated port.
  56  */
  57 #define IOCTL_EVTCHN_BIND_INTERDOMAIN                   \
  58         _IOC(_IOC_NONE, 'E', 1, sizeof(struct ioctl_evtchn_bind_interdomain))
  59 struct ioctl_evtchn_bind_interdomain {
  60         unsigned int remote_domain, remote_port;
  61 };
  62
  63 /*
  64  * Allocate a fresh port for binding to @remote_domain.
  65  * Return allocated port.
  66  */
  67 #define IOCTL_EVTCHN_BIND_UNBOUND_PORT                  \
  68         _IOC(_IOC_NONE, 'E', 2, sizeof(struct ioctl_evtchn_bind_unbound_port))
  69 struct ioctl_evtchn_bind_unbound_port {
  70         unsigned int remote_domain;
  71 };
  72
  73 /*
  74  * Unbind previously allocated @port.
  75  */
  76 #define IOCTL_EVTCHN_UNBIND                             \
  77         _IOC(_IOC_NONE, 'E', 3, sizeof(struct ioctl_evtchn_unbind))
  78 struct ioctl_evtchn_unbind {
  79         unsigned int port;
  80 };
  81
  82 /*
  83  * Notify the given @port.
  84  */
  85 #define IOCTL_EVTCHN_NOTIFY                             \
  86         _IOC(_IOC_NONE, 'E', 4, sizeof(struct ioctl_evtchn_notify))
  87 struct ioctl_evtchn_notify {
  88         unsigned int port;
  89 };
  90
  91 #endif /* _XEN_SYS_EVTCHN_H */
  92
  93 /*
  94  * Local variables:
  95  *  c-file-style: "solaris"
  96  *  indent-tabs-mode: t
  97  *  c-indent-level: 8
  98  *  c-basic-offset: 8
  99  *  tab-width: 8
 100  * End:
 101  */