diff options
author | David S. Miller <davem@davemloft.net> | 2008-09-08 19:59:05 -0400 |
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committer | David S. Miller <davem@davemloft.net> | 2008-09-08 19:59:05 -0400 |
commit | 17dce5dfe38ae2fb359b61e855f5d8a3a8b7892b (patch) | |
tree | 88bb1fcf84f9ebfa4299c9a8dcd9e6330b358446 /arch/blackfin/include/asm/bitops.h | |
parent | 712d6954e3998d0de2840d8130941e8042541246 (diff) | |
parent | 82a28c794f27aac17d7a3ebd7f14d731a11a5532 (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
net/mac80211/mlme.c
Diffstat (limited to 'arch/blackfin/include/asm/bitops.h')
-rw-r--r-- | arch/blackfin/include/asm/bitops.h | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/bitops.h b/arch/blackfin/include/asm/bitops.h new file mode 100644 index 000000000000..b39a175c79c1 --- /dev/null +++ b/arch/blackfin/include/asm/bitops.h | |||
@@ -0,0 +1,218 @@ | |||
1 | #ifndef _BLACKFIN_BITOPS_H | ||
2 | #define _BLACKFIN_BITOPS_H | ||
3 | |||
4 | /* | ||
5 | * Copyright 1992, Linus Torvalds. | ||
6 | */ | ||
7 | |||
8 | #include <linux/compiler.h> | ||
9 | #include <asm/byteorder.h> /* swab32 */ | ||
10 | #include <asm/system.h> /* save_flags */ | ||
11 | |||
12 | #ifdef __KERNEL__ | ||
13 | |||
14 | #ifndef _LINUX_BITOPS_H | ||
15 | #error only <linux/bitops.h> can be included directly | ||
16 | #endif | ||
17 | |||
18 | #include <asm-generic/bitops/ffs.h> | ||
19 | #include <asm-generic/bitops/__ffs.h> | ||
20 | #include <asm-generic/bitops/sched.h> | ||
21 | #include <asm-generic/bitops/ffz.h> | ||
22 | |||
23 | static __inline__ void set_bit(int nr, volatile unsigned long *addr) | ||
24 | { | ||
25 | int *a = (int *)addr; | ||
26 | int mask; | ||
27 | unsigned long flags; | ||
28 | |||
29 | a += nr >> 5; | ||
30 | mask = 1 << (nr & 0x1f); | ||
31 | local_irq_save(flags); | ||
32 | *a |= mask; | ||
33 | local_irq_restore(flags); | ||
34 | } | ||
35 | |||
36 | static __inline__ void __set_bit(int nr, volatile unsigned long *addr) | ||
37 | { | ||
38 | int *a = (int *)addr; | ||
39 | int mask; | ||
40 | |||
41 | a += nr >> 5; | ||
42 | mask = 1 << (nr & 0x1f); | ||
43 | *a |= mask; | ||
44 | } | ||
45 | |||
46 | /* | ||
47 | * clear_bit() doesn't provide any barrier for the compiler. | ||
48 | */ | ||
49 | #define smp_mb__before_clear_bit() barrier() | ||
50 | #define smp_mb__after_clear_bit() barrier() | ||
51 | |||
52 | static __inline__ void clear_bit(int nr, volatile unsigned long *addr) | ||
53 | { | ||
54 | int *a = (int *)addr; | ||
55 | int mask; | ||
56 | unsigned long flags; | ||
57 | a += nr >> 5; | ||
58 | mask = 1 << (nr & 0x1f); | ||
59 | local_irq_save(flags); | ||
60 | *a &= ~mask; | ||
61 | local_irq_restore(flags); | ||
62 | } | ||
63 | |||
64 | static __inline__ void __clear_bit(int nr, volatile unsigned long *addr) | ||
65 | { | ||
66 | int *a = (int *)addr; | ||
67 | int mask; | ||
68 | |||
69 | a += nr >> 5; | ||
70 | mask = 1 << (nr & 0x1f); | ||
71 | *a &= ~mask; | ||
72 | } | ||
73 | |||
74 | static __inline__ void change_bit(int nr, volatile unsigned long *addr) | ||
75 | { | ||
76 | int mask, flags; | ||
77 | unsigned long *ADDR = (unsigned long *)addr; | ||
78 | |||
79 | ADDR += nr >> 5; | ||
80 | mask = 1 << (nr & 31); | ||
81 | local_irq_save(flags); | ||
82 | *ADDR ^= mask; | ||
83 | local_irq_restore(flags); | ||
84 | } | ||
85 | |||
86 | static __inline__ void __change_bit(int nr, volatile unsigned long *addr) | ||
87 | { | ||
88 | int mask; | ||
89 | unsigned long *ADDR = (unsigned long *)addr; | ||
90 | |||
91 | ADDR += nr >> 5; | ||
92 | mask = 1 << (nr & 31); | ||
93 | *ADDR ^= mask; | ||
94 | } | ||
95 | |||
96 | static __inline__ int test_and_set_bit(int nr, void *addr) | ||
97 | { | ||
98 | int mask, retval; | ||
99 | volatile unsigned int *a = (volatile unsigned int *)addr; | ||
100 | unsigned long flags; | ||
101 | |||
102 | a += nr >> 5; | ||
103 | mask = 1 << (nr & 0x1f); | ||
104 | local_irq_save(flags); | ||
105 | retval = (mask & *a) != 0; | ||
106 | *a |= mask; | ||
107 | local_irq_restore(flags); | ||
108 | |||
109 | return retval; | ||
110 | } | ||
111 | |||
112 | static __inline__ int __test_and_set_bit(int nr, volatile unsigned long *addr) | ||
113 | { | ||
114 | int mask, retval; | ||
115 | volatile unsigned int *a = (volatile unsigned int *)addr; | ||
116 | |||
117 | a += nr >> 5; | ||
118 | mask = 1 << (nr & 0x1f); | ||
119 | retval = (mask & *a) != 0; | ||
120 | *a |= mask; | ||
121 | return retval; | ||
122 | } | ||
123 | |||
124 | static __inline__ int test_and_clear_bit(int nr, volatile unsigned long *addr) | ||
125 | { | ||
126 | int mask, retval; | ||
127 | volatile unsigned int *a = (volatile unsigned int *)addr; | ||
128 | unsigned long flags; | ||
129 | |||
130 | a += nr >> 5; | ||
131 | mask = 1 << (nr & 0x1f); | ||
132 | local_irq_save(flags); | ||
133 | retval = (mask & *a) != 0; | ||
134 | *a &= ~mask; | ||
135 | local_irq_restore(flags); | ||
136 | |||
137 | return retval; | ||
138 | } | ||
139 | |||
140 | static __inline__ int __test_and_clear_bit(int nr, volatile unsigned long *addr) | ||
141 | { | ||
142 | int mask, retval; | ||
143 | volatile unsigned int *a = (volatile unsigned int *)addr; | ||
144 | |||
145 | a += nr >> 5; | ||
146 | mask = 1 << (nr & 0x1f); | ||
147 | retval = (mask & *a) != 0; | ||
148 | *a &= ~mask; | ||
149 | return retval; | ||
150 | } | ||
151 | |||
152 | static __inline__ int test_and_change_bit(int nr, volatile unsigned long *addr) | ||
153 | { | ||
154 | int mask, retval; | ||
155 | volatile unsigned int *a = (volatile unsigned int *)addr; | ||
156 | unsigned long flags; | ||
157 | |||
158 | a += nr >> 5; | ||
159 | mask = 1 << (nr & 0x1f); | ||
160 | local_irq_save(flags); | ||
161 | retval = (mask & *a) != 0; | ||
162 | *a ^= mask; | ||
163 | local_irq_restore(flags); | ||
164 | return retval; | ||
165 | } | ||
166 | |||
167 | static __inline__ int __test_and_change_bit(int nr, | ||
168 | volatile unsigned long *addr) | ||
169 | { | ||
170 | int mask, retval; | ||
171 | volatile unsigned int *a = (volatile unsigned int *)addr; | ||
172 | |||
173 | a += nr >> 5; | ||
174 | mask = 1 << (nr & 0x1f); | ||
175 | retval = (mask & *a) != 0; | ||
176 | *a ^= mask; | ||
177 | return retval; | ||
178 | } | ||
179 | |||
180 | /* | ||
181 | * This routine doesn't need to be atomic. | ||
182 | */ | ||
183 | static __inline__ int __constant_test_bit(int nr, const void *addr) | ||
184 | { | ||
185 | return ((1UL << (nr & 31)) & | ||
186 | (((const volatile unsigned int *)addr)[nr >> 5])) != 0; | ||
187 | } | ||
188 | |||
189 | static __inline__ int __test_bit(int nr, const void *addr) | ||
190 | { | ||
191 | int *a = (int *)addr; | ||
192 | int mask; | ||
193 | |||
194 | a += nr >> 5; | ||
195 | mask = 1 << (nr & 0x1f); | ||
196 | return ((mask & *a) != 0); | ||
197 | } | ||
198 | |||
199 | #define test_bit(nr,addr) \ | ||
200 | (__builtin_constant_p(nr) ? \ | ||
201 | __constant_test_bit((nr),(addr)) : \ | ||
202 | __test_bit((nr),(addr))) | ||
203 | |||
204 | #include <asm-generic/bitops/find.h> | ||
205 | #include <asm-generic/bitops/hweight.h> | ||
206 | #include <asm-generic/bitops/lock.h> | ||
207 | |||
208 | #include <asm-generic/bitops/ext2-atomic.h> | ||
209 | #include <asm-generic/bitops/ext2-non-atomic.h> | ||
210 | |||
211 | #include <asm-generic/bitops/minix.h> | ||
212 | |||
213 | #endif /* __KERNEL__ */ | ||
214 | |||
215 | #include <asm-generic/bitops/fls.h> | ||
216 | #include <asm-generic/bitops/fls64.h> | ||
217 | |||
218 | #endif /* _BLACKFIN_BITOPS_H */ | ||