1 /*- 2 * Copyright (c) 2009 Alan L. Cox <alc@cs.rice.edu> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _MACHINE_VM_H_ 30 #define _MACHINE_VM_H_ 31 32 /* Memory attribute configuration. */ 33 #define VM_MEMATTR_DEVICE_nGnRnE 0 34 #define VM_MEMATTR_UNCACHEABLE 1 35 #define VM_MEMATTR_WRITE_BACK 2 36 #define VM_MEMATTR_WRITE_THROUGH 3 37 #define VM_MEMATTR_DEVICE_nGnRE 4 38 39 #define VM_MEMATTR_DEVICE VM_MEMATTR_DEVICE_nGnRE 40 #define VM_MEMATTR_DEVICE_NP VM_MEMATTR_DEVICE_nGnRnE 41 42 #ifdef _KERNEL 43 /* If defined vmstat will try to use both of these in a switch statement */ 44 #define VM_MEMATTR_WRITE_COMBINING VM_MEMATTR_WRITE_THROUGH 45 #endif 46 47 #define VM_MEMATTR_DEFAULT VM_MEMATTR_WRITE_BACK 48 49 #endif /* !_MACHINE_VM_H_ */ 50