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51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
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/*
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* linux/include/asm-arm/proc-armv/domain.h
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*
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* Copyright (C) 1999 Russell King.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_PROC_DOMAIN_H
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#define __ASM_PROC_DOMAIN_H
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/*
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* Domain numbers
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*
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* DOMAIN_IO - domain 2 includes all IO only
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* DOMAIN_KERNEL - domain 1 includes all kernel memory only
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* DOMAIN_USER - domain 0 includes all user memory only
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*/
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#define DOMAIN_USER 0
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#define DOMAIN_KERNEL 1
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#define DOMAIN_TABLE 1
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#define DOMAIN_IO 2
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/*
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* Domain types
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*/
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#define DOMAIN_NOACCESS 0
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#define DOMAIN_CLIENT 1
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#define DOMAIN_MANAGER 3
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#define domain_val(dom,type) ((type) << 2*(dom))
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#define set_domain(x) \
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do { \
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__asm__ __volatile__( \
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"mcr p15, 0, %0, c3, c0 @ set domain" \
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: : "r" (x)); \
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} while (0)
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#define modify_domain(dom,type) \
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do { \
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unsigned int domain = current->thread.domain; \
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domain &= ~domain_val(dom, DOMAIN_MANAGER); \
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domain |= domain_val(dom, type); \
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current->thread.domain = domain; \
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set_domain(current->thread.domain); \
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} while (0)
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#endif
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