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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __ARM_MMU_H
2#define __ARM_MMU_H
3
Russell King002547b2006-06-20 20:46:52 +01004#ifdef CONFIG_MMU
5
Linus Torvalds1da177e2005-04-16 15:20:36 -07006typedef struct {
Russell King516793c2007-05-17 10:19:23 +01007#ifdef CONFIG_CPU_HAS_ASID
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 unsigned int id;
Thomas Gleixnerbd31b852009-07-03 08:44:46 -05009 raw_spinlock_t id_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -070010#endif
Russell Kingff0daca2006-06-29 20:17:15 +010011 unsigned int kvm_seq;
Linus Torvalds1da177e2005-04-16 15:20:36 -070012} mm_context_t;
13
Russell King516793c2007-05-17 10:19:23 +010014#ifdef CONFIG_CPU_HAS_ASID
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#define ASID(mm) ((mm)->context.id & 255)
MyungJoo Ham28c22d72010-11-23 11:39:23 +010016
17/* init_mm.context.id_lock should be initialized. */
18#define INIT_MM_CONTEXT(name) \
Thomas Gleixnerbd31b852009-07-03 08:44:46 -050019 .context.id_lock = __RAW_SPIN_LOCK_UNLOCKED(name.context.id_lock),
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#else
21#define ASID(mm) (0)
22#endif
23
Russell King002547b2006-06-20 20:46:52 +010024#else
25
26/*
27 * From nommu.h:
28 * Copyright (C) 2002, David McCullough <davidm@snapgear.com>
29 * modified for 2.6 by Hyok S. Choi <hyok.choi@samsung.com>
30 */
31typedef struct {
Russell King002547b2006-06-20 20:46:52 +010032 unsigned long end_brk;
33} mm_context_t;
34
35#endif
36
Linus Torvalds1da177e2005-04-16 15:20:36 -070037#endif