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Diffstat (limited to 'include/asm-arm/domain.h')
| -rw-r--r-- | include/asm-arm/domain.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/asm-arm/domain.h b/include/asm-arm/domain.h new file mode 100644 index 00000000000..da1d960387d --- /dev/null +++ b/include/asm-arm/domain.h @@ -0,0 +1,52 @@ +/* + * linux/include/asm-arm/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_USER - domain 1 includes all user memory only + * DOMAIN_KERNEL - domain 0 includes all kernel memory only + */ +#define DOMAIN_KERNEL 0 +#define DOMAIN_TABLE 0 +#define DOMAIN_USER 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))) + +#ifndef __ASSEMBLY__ +#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 { \ + struct thread_info *thread = current_thread_info(); \ + unsigned int domain = thread->cpu_domain; \ + domain &= ~domain_val(dom, DOMAIN_MANAGER); \ + thread->cpu_domain = domain | domain_val(dom, type); \ + set_domain(thread->cpu_domain); \ + } while (0) + +#endif +#endif /* !__ASSEMBLY__ */ |