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Diffstat (limited to 'arch/microblaze/include/asm/system.h')
-rw-r--r-- | arch/microblaze/include/asm/system.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/arch/microblaze/include/asm/system.h b/arch/microblaze/include/asm/system.h new file mode 100644 index 00000000000..e6a2284571d --- /dev/null +++ b/arch/microblaze/include/asm/system.h | |||
@@ -0,0 +1,106 @@ | |||
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> | ||
15 | #include <asm/cache.h> | ||
16 | |||
17 | #include <asm-generic/cmpxchg.h> | ||
18 | #include <asm-generic/cmpxchg-local.h> | ||
19 | |||
20 | #define __ARCH_WANT_INTERRUPTS_ON_CTXSW | ||
21 | |||
22 | struct task_struct; | ||
23 | struct thread_info; | ||
24 | |||
25 | extern struct task_struct *_switch_to(struct thread_info *prev, | ||
26 | struct thread_info *next); | ||
27 | |||
28 | #define switch_to(prev, next, last) \ | ||
29 | do { \ | ||
30 | (last) = _switch_to(task_thread_info(prev), \ | ||
31 | task_thread_info(next)); \ | ||
32 | } while (0) | ||
33 | |||
34 | #define smp_read_barrier_depends() do {} while (0) | ||
35 | #define read_barrier_depends() do {} while (0) | ||
36 | |||
37 | #define nop() asm volatile ("nop") | ||
38 | #define mb() barrier() | ||
39 | #define rmb() mb() | ||
40 | #define wmb() mb() | ||
41 | #define set_mb(var, value) do { var = value; mb(); } while (0) | ||
42 | #define set_wmb(var, value) do { var = value; wmb(); } while (0) | ||
43 | |||
44 | #define smp_mb() mb() | ||
45 | #define smp_rmb() rmb() | ||
46 | #define smp_wmb() wmb() | ||
47 | |||
48 | void __bad_xchg(volatile void *ptr, int size); | ||
49 | |||
50 | static inline unsigned long __xchg(unsigned long x, volatile void *ptr, | ||
51 | int size) | ||
52 | { | ||
53 | unsigned long ret; | ||
54 | unsigned long flags; | ||
55 | |||
56 | switch (size) { | ||
57 | case 1: | ||
58 | local_irq_save(flags); | ||
59 | ret = *(volatile unsigned char *)ptr; | ||
60 | *(volatile unsigned char *)ptr = x; | ||
61 | local_irq_restore(flags); | ||
62 | break; | ||
63 | |||
64 | case 4: | ||
65 | local_irq_save(flags); | ||
66 | ret = *(volatile unsigned long *)ptr; | ||
67 | *(volatile unsigned long *)ptr = x; | ||
68 | local_irq_restore(flags); | ||
69 | break; | ||
70 | default: | ||
71 | __bad_xchg(ptr, size), ret = 0; | ||
72 | break; | ||
73 | } | ||
74 | |||
75 | return ret; | ||
76 | } | ||
77 | |||
78 | void disable_hlt(void); | ||
79 | void enable_hlt(void); | ||
80 | void default_idle(void); | ||
81 | |||
82 | #define xchg(ptr, x) \ | ||
83 | ((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr)))) | ||
84 | |||
85 | void free_init_pages(char *what, unsigned long begin, unsigned long end); | ||
86 | void free_initmem(void); | ||
87 | extern char *klimit; | ||
88 | extern void ret_from_fork(void); | ||
89 | |||
90 | extern void *alloc_maybe_bootmem(size_t size, gfp_t mask); | ||
91 | extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask); | ||
92 | |||
93 | #ifdef CONFIG_DEBUG_FS | ||
94 | extern struct dentry *of_debugfs_root; | ||
95 | #endif | ||
96 | |||
97 | #define arch_align_stack(x) (x) | ||
98 | |||
99 | /* | ||
100 | * MicroBlaze doesn't handle unaligned accesses in hardware. | ||
101 | * | ||
102 | * Based on this we force the IP header alignment in network drivers. | ||
103 | */ | ||
104 | #define NET_IP_ALIGN 2 | ||
105 | |||
106 | #endif /* _ASM_MICROBLAZE_SYSTEM_H */ | ||