| wdenk | b783eda | 2003-06-25 22:26:29 +0000 | [diff] [blame] | 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 |