diff options
Diffstat (limited to 'arch/m68knommu/include/asm/atomic.h')
-rw-r--r-- | arch/m68knommu/include/asm/atomic.h | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/arch/m68knommu/include/asm/atomic.h b/arch/m68knommu/include/asm/atomic.h deleted file mode 100644 index 6bb674855a3f..000000000000 --- a/arch/m68knommu/include/asm/atomic.h +++ /dev/null | |||
@@ -1,155 +0,0 @@ | |||
1 | #ifndef __ARCH_M68KNOMMU_ATOMIC__ | ||
2 | #define __ARCH_M68KNOMMU_ATOMIC__ | ||
3 | |||
4 | #include <linux/types.h> | ||
5 | #include <asm/system.h> | ||
6 | |||
7 | /* | ||
8 | * Atomic operations that C can't guarantee us. Useful for | ||
9 | * resource counting etc.. | ||
10 | */ | ||
11 | |||
12 | /* | ||
13 | * We do not have SMP m68k systems, so we don't have to deal with that. | ||
14 | */ | ||
15 | |||
16 | #define ATOMIC_INIT(i) { (i) } | ||
17 | |||
18 | #define atomic_read(v) ((v)->counter) | ||
19 | #define atomic_set(v, i) (((v)->counter) = i) | ||
20 | |||
21 | static __inline__ void atomic_add(int i, atomic_t *v) | ||
22 | { | ||
23 | #ifdef CONFIG_COLDFIRE | ||
24 | __asm__ __volatile__("addl %1,%0" : "+m" (*v) : "d" (i)); | ||
25 | #else | ||
26 | __asm__ __volatile__("addl %1,%0" : "+m" (*v) : "di" (i)); | ||
27 | #endif | ||
28 | } | ||
29 | |||
30 | static __inline__ void atomic_sub(int i, atomic_t *v) | ||
31 | { | ||
32 | #ifdef CONFIG_COLDFIRE | ||
33 | __asm__ __volatile__("subl %1,%0" : "+m" (*v) : "d" (i)); | ||
34 | #else | ||
35 | __asm__ __volatile__("subl %1,%0" : "+m" (*v) : "di" (i)); | ||
36 | #endif | ||
37 | } | ||
38 | |||
39 | static __inline__ int atomic_sub_and_test(int i, atomic_t * v) | ||
40 | { | ||
41 | char c; | ||
42 | #ifdef CONFIG_COLDFIRE | ||
43 | __asm__ __volatile__("subl %2,%1; seq %0" | ||
44 | : "=d" (c), "+m" (*v) | ||
45 | : "d" (i)); | ||
46 | #else | ||
47 | __asm__ __volatile__("subl %2,%1; seq %0" | ||
48 | : "=d" (c), "+m" (*v) | ||
49 | : "di" (i)); | ||
50 | #endif | ||
51 | return c != 0; | ||
52 | } | ||
53 | |||
54 | static __inline__ void atomic_inc(volatile atomic_t *v) | ||
55 | { | ||
56 | __asm__ __volatile__("addql #1,%0" : "+m" (*v)); | ||
57 | } | ||
58 | |||
59 | /* | ||
60 | * atomic_inc_and_test - increment and test | ||
61 | * @v: pointer of type atomic_t | ||
62 | * | ||
63 | * Atomically increments @v by 1 | ||
64 | * and returns true if the result is zero, or false for all | ||
65 | * other cases. | ||
66 | */ | ||
67 | |||
68 | static __inline__ int atomic_inc_and_test(volatile atomic_t *v) | ||
69 | { | ||
70 | char c; | ||
71 | __asm__ __volatile__("addql #1,%1; seq %0" : "=d" (c), "+m" (*v)); | ||
72 | return c != 0; | ||
73 | } | ||
74 | |||
75 | static __inline__ void atomic_dec(volatile atomic_t *v) | ||
76 | { | ||
77 | __asm__ __volatile__("subql #1,%0" : "+m" (*v)); | ||
78 | } | ||
79 | |||
80 | static __inline__ int atomic_dec_and_test(volatile atomic_t *v) | ||
81 | { | ||
82 | char c; | ||
83 | __asm__ __volatile__("subql #1,%1; seq %0" : "=d" (c), "+m" (*v)); | ||
84 | return c != 0; | ||
85 | } | ||
86 | |||
87 | static __inline__ void atomic_clear_mask(unsigned long mask, unsigned long *v) | ||
88 | { | ||
89 | __asm__ __volatile__("andl %1,%0" : "+m" (*v) : "id" (~(mask))); | ||
90 | } | ||
91 | |||
92 | static __inline__ void atomic_set_mask(unsigned long mask, unsigned long *v) | ||
93 | { | ||
94 | __asm__ __volatile__("orl %1,%0" : "+m" (*v) : "id" (mask)); | ||
95 | } | ||
96 | |||
97 | /* Atomic operations are already serializing */ | ||
98 | #define smp_mb__before_atomic_dec() barrier() | ||
99 | #define smp_mb__after_atomic_dec() barrier() | ||
100 | #define smp_mb__before_atomic_inc() barrier() | ||
101 | #define smp_mb__after_atomic_inc() barrier() | ||
102 | |||
103 | static inline int atomic_add_return(int i, atomic_t * v) | ||
104 | { | ||
105 | unsigned long temp, flags; | ||
106 | |||
107 | local_irq_save(flags); | ||
108 | temp = *(long *)v; | ||
109 | temp += i; | ||
110 | *(long *)v = temp; | ||
111 | local_irq_restore(flags); | ||
112 | |||
113 | return temp; | ||
114 | } | ||
115 | |||
116 | #define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0) | ||
117 | |||
118 | static inline int atomic_sub_return(int i, atomic_t * v) | ||
119 | { | ||
120 | unsigned long temp, flags; | ||
121 | |||
122 | local_irq_save(flags); | ||
123 | temp = *(long *)v; | ||
124 | temp -= i; | ||
125 | *(long *)v = temp; | ||
126 | local_irq_restore(flags); | ||
127 | |||
128 | return temp; | ||
129 | } | ||
130 | |||
131 | #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n))) | ||
132 | #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) | ||
133 | |||
134 | static __inline__ int atomic_add_unless(atomic_t *v, int a, int u) | ||
135 | { | ||
136 | int c, old; | ||
137 | c = atomic_read(v); | ||
138 | for (;;) { | ||
139 | if (unlikely(c == (u))) | ||
140 | break; | ||
141 | old = atomic_cmpxchg((v), c, c + (a)); | ||
142 | if (likely(old == c)) | ||
143 | break; | ||
144 | c = old; | ||
145 | } | ||
146 | return c != (u); | ||
147 | } | ||
148 | |||
149 | #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) | ||
150 | |||
151 | #define atomic_dec_return(v) atomic_sub_return(1,(v)) | ||
152 | #define atomic_inc_return(v) atomic_add_return(1,(v)) | ||
153 | |||
154 | #include <asm-generic/atomic.h> | ||
155 | #endif /* __ARCH_M68KNOMMU_ATOMIC __ */ | ||