1/*
2 *  linux/include/asm-arm/proc-armv/domain.h
3 *
4 *  Copyright (C) 1999 Russell King.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#ifndef __ASM_PROC_DOMAIN_H
11#define __ASM_PROC_DOMAIN_H
12
13/*
14 * Domain numbers
15 *
16 *  DOMAIN_IO     - domain 2 includes all IO only
17 *  DOMAIN_KERNEL - domain 1 includes all kernel memory only
18 *  DOMAIN_USER   - domain 0 includes all user memory only
19 */
20#define DOMAIN_USER	0
21#define DOMAIN_KERNEL	1
22#define DOMAIN_TABLE	1
23#define DOMAIN_IO	2
24
25/*
26 * Domain types
27 */
28#define DOMAIN_NOACCESS	0
29#define DOMAIN_CLIENT	1
30#define DOMAIN_MANAGER	3
31
32#define domain_val(dom,type)	((type) << 2*(dom))
33
34#define set_domain(x)					\
35	do {						\
36	__asm__ __volatile__(				\
37	"mcr	p15, 0, %0, c3, c0	@ set domain"	\
38	  : : "r" (x));					\
39	} while (0)
40
41#define modify_domain(dom,type)				\
42	do {						\
43	unsigned int domain = current->thread.domain;	\
44	domain &= ~domain_val(dom, DOMAIN_MANAGER);	\
45	domain |= domain_val(dom, type);		\
46	current->thread.domain = domain;		\
47	set_domain(current->thread.domain);		\
48	} while (0)
49
50#endif
51