1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * linux/include/asm-arm/proc-armv/domain.h 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Copyright (C) 1999 Russell King. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * This program is free software; you can redistribute it and/or modify 7*4882a593Smuzhiyun * it under the terms of the GNU General Public License version 2 as 8*4882a593Smuzhiyun * published by the Free Software Foundation. 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun #ifndef __ASM_PROC_DOMAIN_H 11*4882a593Smuzhiyun #define __ASM_PROC_DOMAIN_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun /* 14*4882a593Smuzhiyun * Domain numbers 15*4882a593Smuzhiyun * 16*4882a593Smuzhiyun * DOMAIN_IO - domain 2 includes all IO only 17*4882a593Smuzhiyun * DOMAIN_KERNEL - domain 1 includes all kernel memory only 18*4882a593Smuzhiyun * DOMAIN_USER - domain 0 includes all user memory only 19*4882a593Smuzhiyun */ 20*4882a593Smuzhiyun #define DOMAIN_USER 0 21*4882a593Smuzhiyun #define DOMAIN_KERNEL 1 22*4882a593Smuzhiyun #define DOMAIN_TABLE 1 23*4882a593Smuzhiyun #define DOMAIN_IO 2 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun /* 26*4882a593Smuzhiyun * Domain types 27*4882a593Smuzhiyun */ 28*4882a593Smuzhiyun #define DOMAIN_NOACCESS 0 29*4882a593Smuzhiyun #define DOMAIN_CLIENT 1 30*4882a593Smuzhiyun #define DOMAIN_MANAGER 3 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun #define domain_val(dom,type) ((type) << 2*(dom)) 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun #define set_domain(x) \ 35*4882a593Smuzhiyun do { \ 36*4882a593Smuzhiyun __asm__ __volatile__( \ 37*4882a593Smuzhiyun "mcr p15, 0, %0, c3, c0 @ set domain" \ 38*4882a593Smuzhiyun : : "r" (x)); \ 39*4882a593Smuzhiyun } while (0) 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun #define modify_domain(dom,type) \ 42*4882a593Smuzhiyun do { \ 43*4882a593Smuzhiyun unsigned int domain = current->thread.domain; \ 44*4882a593Smuzhiyun domain &= ~domain_val(dom, DOMAIN_MANAGER); \ 45*4882a593Smuzhiyun domain |= domain_val(dom, type); \ 46*4882a593Smuzhiyun current->thread.domain = domain; \ 47*4882a593Smuzhiyun set_domain(current->thread.domain); \ 48*4882a593Smuzhiyun } while (0) 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun #endif 51