domain.h
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上传日期:2013-02-24
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- /*
- * linux/include/asm-arm/proc-armv/domain.h
- *
- * Copyright (C) 1999 Russell King.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
- #ifndef __ASM_PROC_DOMAIN_H
- #define __ASM_PROC_DOMAIN_H
- /*
- * Domain numbers
- *
- * DOMAIN_IO - domain 2 includes all IO only
- * DOMAIN_KERNEL - domain 1 includes all kernel memory only
- * DOMAIN_USER - domain 0 includes all user memory only
- */
- #define DOMAIN_USER 0
- #define DOMAIN_KERNEL 1
- #define DOMAIN_TABLE 1
- #define DOMAIN_IO 2
- /*
- * Domain types
- */
- #define DOMAIN_NOACCESS 0
- #define DOMAIN_CLIENT 1
- #define DOMAIN_MANAGER 3
- #define domain_val(dom,type) ((type) << 2*(dom))
- #define set_domain(x)
- do {
- __asm__ __volatile__(
- "mcr p15, 0, %0, c3, c0 @ set domain"
- : : "r" (x));
- } while (0)
- #define modify_domain(dom,type)
- do {
- unsigned int domain = current->thread.domain;
- domain &= ~domain_val(dom, DOMAIN_MANAGER);
- domain |= domain_val(dom, type);
- current->thread.domain = domain;
- set_domain(current->thread.domain);
- } while (0)
- #endif