sys/arch/xen/include/xen3-public/xen-compat.h

   1 /* $NetBSD: xen-compat.h,v 1.4 2008/05/04 19:56:28 cegger Exp $ */
   2 /******************************************************************************
   3  * xen-compat.h
   4  *
   5  * Guest OS interface to Xen.  Compatibility layer.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to
   9  * deal in the Software without restriction, including without limitation the
  10  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  11  * sell copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  *
  25  * Copyright (c) 2006, Christian Limpach
  26  */
  27
  28 #ifndef __XEN_PUBLIC_XEN_COMPAT_H__
  29 #define __XEN_PUBLIC_XEN_COMPAT_H__
  30
  31 #define __XEN_LATEST_INTERFACE_VERSION__ 0x00030209
  32
  33 #if defined(__XEN__) || defined(__XEN_TOOLS__)
  34 /* Xen is built with matching headers and implements the latest interface. */
  35 #define __XEN_INTERFACE_VERSION__ __XEN_LATEST_INTERFACE_VERSION__
  36 #elif !defined(__XEN_INTERFACE_VERSION__)
  37 /* Guests which do not specify a version get the legacy interface. */
  38 #define __XEN_INTERFACE_VERSION__ 0x00000000
  39 #endif
  40
  41 #if __XEN_INTERFACE_VERSION__ > __XEN_LATEST_INTERFACE_VERSION__
  42 #error "These header files do not support the requested interface version."
  43 #endif
  44
  45 #endif /* __XEN_PUBLIC_XEN_COMPAT_H__ */