1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 
  27 #ifndef _SYS_BALLOON_H
  28 #define _SYS_BALLOON_H
  29 
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31 
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif
  35 
  36 #define BALLOON_DEV_NAME        "balloon"
  37 #define BALLOON_PATHNAME        "xen/" BALLOON_DEV_NAME
  38 
  39 #define BALLOON_DRIVER_NAME     "balloon"
  40 
  41 #define BLN_IOCTL_BASE          ('B' << 24) | ('A' << 16)
  42 
  43 /*
  44  * To return the desired value.  These defines are copied in balloon.py
  45  * in the hypervisor gate, so woe befall anyone who changes these.
  46  */
  47 #define BLN_IOCTL_CURRENT       (BLN_IOCTL_BASE | 0x1)
  48 #define BLN_IOCTL_TARGET        (BLN_IOCTL_BASE | 0x2)
  49 #define BLN_IOCTL_LOW           (BLN_IOCTL_BASE | 0x3)
  50 #define BLN_IOCTL_HIGH          (BLN_IOCTL_BASE | 0x4)
  51 #define BLN_IOCTL_LIMIT         (BLN_IOCTL_BASE | 0x5)
  52 
  53 #ifdef __cplusplus
  54 }
  55 #endif
  56 
  57 #endif /* _SYS_BALLOON_H */