xref: /freebsd/sys/amd64/include/vm.h (revision 59c8e88e72633afbc47a4ace0d2170d00d51f7dc)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2009 Hudson River Trading LLC
5  * Written by: John H. Baldwin <jhb@FreeBSD.org>
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  */
29 
30 #ifndef _MACHINE_VM_H_
31 #define	_MACHINE_VM_H_
32 
33 #include <machine/specialreg.h>
34 
35 /* Memory attributes. */
36 #define	VM_MEMATTR_UNCACHEABLE		((vm_memattr_t)PAT_UNCACHEABLE)
37 #define	VM_MEMATTR_WRITE_COMBINING	((vm_memattr_t)PAT_WRITE_COMBINING)
38 #define	VM_MEMATTR_WRITE_THROUGH	((vm_memattr_t)PAT_WRITE_THROUGH)
39 #define	VM_MEMATTR_WRITE_PROTECTED	((vm_memattr_t)PAT_WRITE_PROTECTED)
40 #define	VM_MEMATTR_WRITE_BACK		((vm_memattr_t)PAT_WRITE_BACK)
41 #define	VM_MEMATTR_WEAK_UNCACHEABLE	((vm_memattr_t)PAT_UNCACHED)
42 
43 #define	VM_MEMATTR_DEFAULT		VM_MEMATTR_WRITE_BACK
44 #define	VM_MEMATTR_DEVICE		VM_MEMATTR_UNCACHEABLE
45 
46 #endif /* !_MACHINE_VM_H_ */
47