projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 4511ec15 MS |
1 | /* |
| 2 | * Copyright (C) 2006 Atmark Techno, Inc. | |
| 3 | * | |
| 4 | * This file is subject to the terms and conditions of the GNU General Public | |
| 5 | * License. See the file "COPYING" in the main directory of this archive | |
| 6 | * for more details. | |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef _ASM_MICROBLAZE_SYSTEM_H | |
| 10 | #define _ASM_MICROBLAZE_SYSTEM_H | |
| 11 | ||
| 12 | #include <asm/registers.h> | |
| 13 | #include <asm/setup.h> | |
| 14 | #include <asm/irqflags.h> | |
| e44171f1 | 15 | #include <asm/cache.h> |
| 4511ec15 | 16 | |
| 0a584583 RLB |
17 | #include <asm-generic/cmpxchg.h> |
| 18 | #include <asm-generic/cmpxchg-local.h> | |
| 19 | ||
| 4511ec15 MS |
20 | struct task_struct; |
| 21 | struct thread_info; | |
| 22 | ||
| 23 | extern struct task_struct *_switch_to(struct thread_info *prev, | |
| 24 | struct thread_info *next); | |
| 25 | ||
| 26 | #define switch_to(prev, next, last) \ | |
| 27 | do { \ | |
| 28 | (last) = _switch_to(task_thread_info(prev), \ | |
| 29 | task_thread_info(next)); \ | |
| 30 | } while (0) | |
| 31 | ||
| 32 | #define smp_read_barrier_depends() do {} while (0) | |
| 33 | #define read_barrier_depends() do {} while (0) | |
| 34 | ||
| 35 | #define nop() asm volatile ("nop") | |
| 36 | #define mb() barrier() | |
| 37 | #define rmb() mb() | |
| 38 | #define wmb() mb() | |
| 39 | #define set_mb(var, value) do { var = value; mb(); } while (0) | |
| 40 | #define set_wmb(var, value) do { var = value; wmb(); } while (0) | |
| 41 | ||
| 42 | #define smp_mb() mb() | |
| 43 | #define smp_rmb() rmb() | |
| 44 | #define smp_wmb() wmb() | |
| 45 | ||
| 4511ec15 MS |
46 | void __bad_xchg(volatile void *ptr, int size); |
| 47 | ||
| 48 | static inline unsigned long __xchg(unsigned long x, volatile void *ptr, | |
| 49 | int size) | |
| 50 | { | |
| 51 | unsigned long ret; | |
| 52 | unsigned long flags; | |
| 53 | ||
| 54 | switch (size) { | |
| 55 | case 1: | |
| 56 | local_irq_save(flags); | |
| 57 | ret = *(volatile unsigned char *)ptr; | |
| 58 | *(volatile unsigned char *)ptr = x; | |
| 59 | local_irq_restore(flags); | |
| 60 | break; | |
| 61 | ||
| 62 | case 4: | |
| 63 | local_irq_save(flags); | |
| 64 | ret = *(volatile unsigned long *)ptr; | |
| 65 | *(volatile unsigned long *)ptr = x; | |
| 66 | local_irq_restore(flags); | |
| 67 | break; | |
| 68 | default: | |
| 69 | __bad_xchg(ptr, size), ret = 0; | |
| 70 | break; | |
| 71 | } | |
| 72 | ||
| 73 | return ret; | |
| 74 | } | |
| 75 | ||
| 76 | void disable_hlt(void); | |
| 77 | void enable_hlt(void); | |
| 78 | void default_idle(void); | |
| 79 | ||
| 80 | #define xchg(ptr, x) \ | |
| 81 | ((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr)))) | |
| 82 | ||
| 83 | void free_init_pages(char *what, unsigned long begin, unsigned long end); | |
| 84 | void free_initmem(void); | |
| 85 | extern char *klimit; | |
| 95b0f9ea | 86 | extern unsigned long kernel_tlb; |
| 4511ec15 MS |
87 | extern void ret_from_fork(void); |
| 88 | ||
| a84642a3 MS |
89 | extern void *alloc_maybe_bootmem(size_t size, gfp_t mask); |
| 90 | extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask); | |
| 91 | ||
| 4511ec15 MS |
92 | #ifdef CONFIG_DEBUG_FS |
| 93 | extern struct dentry *of_debugfs_root; | |
| 94 | #endif | |
| 95 | ||
| 96 | #define arch_align_stack(x) (x) | |
| 97 | ||
| 98 | #endif /* _ASM_MICROBLAZE_SYSTEM_H */ |