1#ifndef __ARM_MMU_H 2#define __ARM_MMU_H 3 4#ifdef CONFIG_MMU 5 6typedef struct { 7#ifdef CONFIG_CPU_HAS_ASID 8 atomic64_t id; 9#else 10 int switch_pending; 11#endif 12 unsigned int vmalloc_seq; 13 unsigned long sigpage; 14} mm_context_t; 15 16#ifdef CONFIG_CPU_HAS_ASID 17#define ASID_BITS 8 18#define ASID_MASK ((~0ULL) << ASID_BITS) 19#define ASID(mm) ((unsigned int)((mm)->context.id.counter & ~ASID_MASK)) 20#else 21#define ASID(mm) (0) 22#endif 23 24#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 { 32 unsigned long end_brk; 33} mm_context_t; 34 35#endif 36 37#endif 38