Merge branch 'pending' of master.kernel.org:/pub/scm/linux/kernel/git/vxy/lksctp-dev
[linux-2.6] / include / asm-sh / irqflags.h
1 #ifndef __ASM_SH_IRQFLAGS_H
2 #define __ASM_SH_IRQFLAGS_H
3
4 static inline void raw_local_irq_enable(void)
5 {
6         unsigned long __dummy0, __dummy1;
7
8         __asm__ __volatile__ (
9                 "stc    sr, %0\n\t"
10                 "and    %1, %0\n\t"
11 #ifdef CONFIG_CPU_HAS_SR_RB
12                 "stc    r6_bank, %1\n\t"
13                 "or     %1, %0\n\t"
14 #endif
15                 "ldc    %0, sr\n\t"
16                 : "=&r" (__dummy0), "=r" (__dummy1)
17                 : "1" (~0x000000f0)
18                 : "memory"
19         );
20 }
21
22 static inline void raw_local_irq_disable(void)
23 {
24         unsigned long flags;
25
26         __asm__ __volatile__ (
27                 "stc    sr, %0\n\t"
28                 "or     #0xf0, %0\n\t"
29                 "ldc    %0, sr\n\t"
30                 : "=&z" (flags)
31                 : /* no inputs */
32                 : "memory"
33         );
34 }
35
36 static inline void set_bl_bit(void)
37 {
38         unsigned long __dummy0, __dummy1;
39
40         __asm__ __volatile__ (
41                 "stc    sr, %0\n\t"
42                 "or     %2, %0\n\t"
43                 "and    %3, %0\n\t"
44                 "ldc    %0, sr\n\t"
45                 : "=&r" (__dummy0), "=r" (__dummy1)
46                 : "r" (0x10000000), "r" (0xffffff0f)
47                 : "memory"
48         );
49 }
50
51 static inline void clear_bl_bit(void)
52 {
53         unsigned long __dummy0, __dummy1;
54
55         __asm__ __volatile__ (
56                 "stc    sr, %0\n\t"
57                 "and    %2, %0\n\t"
58                 "ldc    %0, sr\n\t"
59                 : "=&r" (__dummy0), "=r" (__dummy1)
60                 : "1" (~0x10000000)
61                 : "memory"
62         );
63 }
64
65 static inline unsigned long __raw_local_save_flags(void)
66 {
67         unsigned long flags;
68
69         __asm__ __volatile__ (
70                 "stc    sr, %0\n\t"
71                 "and    #0xf0, %0\n\t"
72                 : "=&z" (flags)
73                 : /* no inputs */
74                 : "memory"
75         );
76
77         return flags;
78 }
79
80 #define raw_local_save_flags(flags) \
81                 do { (flags) = __raw_local_save_flags(); } while (0)
82
83 static inline int raw_irqs_disabled_flags(unsigned long flags)
84 {
85         return (flags != 0);
86 }
87
88 static inline int raw_irqs_disabled(void)
89 {
90         unsigned long flags = __raw_local_save_flags();
91
92         return raw_irqs_disabled_flags(flags);
93 }
94
95 static inline unsigned long __raw_local_irq_save(void)
96 {
97         unsigned long flags, __dummy;
98
99         __asm__ __volatile__ (
100                 "stc    sr, %1\n\t"
101                 "mov    %1, %0\n\t"
102                 "or     #0xf0, %0\n\t"
103                 "ldc    %0, sr\n\t"
104                 "mov    %1, %0\n\t"
105                 "and    #0xf0, %0\n\t"
106                 : "=&z" (flags), "=&r" (__dummy)
107                 : /* no inputs */
108                 : "memory"
109         );
110
111         return flags;
112 }
113
114 #define raw_local_irq_save(flags) \
115                 do { (flags) = __raw_local_irq_save(); } while (0)
116
117 static inline void raw_local_irq_restore(unsigned long flags)
118 {
119         if ((flags & 0xf0) != 0xf0)
120                 raw_local_irq_enable();
121 }
122
123 #endif /* __ASM_SH_IRQFLAGS_H */