diff options
author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-22 17:12:37 +1000 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-22 17:12:37 +1000 |
commit | 8725f25acc656c1522d48a6746055099efdaca4c (patch) | |
tree | e241424fa58178ed6c2a95a4eb931ea83dbea33c /include/asm-sparc/bitops_32.h | |
parent | c69cccc95fe4b90dde5fe33e6a3b77880b534fa4 (diff) | |
parent | 93ded9b8fd42abe2c3607097963d8de6ad9117eb (diff) |
Merge commit 'origin/master'
Manually fixed up:
drivers/net/fs_enet/fs_enet-main.c
Diffstat (limited to 'include/asm-sparc/bitops_32.h')
-rw-r--r-- | include/asm-sparc/bitops_32.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/include/asm-sparc/bitops_32.h b/include/asm-sparc/bitops_32.h new file mode 100644 index 00000000000..68b98a7e645 --- /dev/null +++ b/include/asm-sparc/bitops_32.h @@ -0,0 +1,111 @@ +/* + * bitops.h: Bit string operations on the Sparc. + * + * Copyright 1995 David S. Miller (davem@caip.rutgers.edu) + * Copyright 1996 Eddie C. Dost (ecd@skynet.be) + * Copyright 2001 Anton Blanchard (anton@samba.org) + */ + +#ifndef _SPARC_BITOPS_H +#define _SPARC_BITOPS_H + +#include <linux/compiler.h> +#include <asm/byteorder.h> + +#ifdef __KERNEL__ + +#ifndef _LINUX_BITOPS_H +#error only <linux/bitops.h> can be included directly +#endif + +extern unsigned long ___set_bit(unsigned long *addr, unsigned long mask); +extern unsigned long ___clear_bit(unsigned long *addr, unsigned long mask); +extern unsigned long ___change_bit(unsigned long *addr, unsigned long mask); + +/* + * Set bit 'nr' in 32-bit quantity at address 'addr' where bit '0' + * is in the highest of the four bytes and bit '31' is the high bit + * within the first byte. Sparc is BIG-Endian. Unless noted otherwise + * all bit-ops return 0 if bit was previously clear and != 0 otherwise. + */ +static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *addr) +{ + unsigned long *ADDR, mask; + + ADDR = ((unsigned long *) addr) + (nr >> 5); + mask = 1 << (nr & 31); + + return ___set_bit(ADDR, mask) != 0; +} + +static inline void set_bit(unsigned long nr, volatile unsigned long *addr) +{ + unsigned long *ADDR, mask; + + ADDR = ((unsigned long *) addr) + (nr >> 5); + mask = 1 << (nr & 31); + + (void) ___set_bit(ADDR, mask); +} + +static inline int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr) +{ + unsigned long *ADDR, mask; + + ADDR = ((unsigned long *) addr) + (nr >> 5); + mask = 1 << (nr & 31); + + return ___clear_bit(ADDR, mask) != 0; +} + +static inline void clear_bit(unsigned long nr, volatile unsigned long *addr) +{ + unsigned long *ADDR, mask; + + ADDR = ((unsigned long *) addr) + (nr >> 5); + mask = 1 << (nr & 31); + + (void) ___clear_bit(ADDR, mask); +} + +static inline int test_and_change_bit(unsigned long nr, volatile unsigned long *addr) +{ + unsigned long *ADDR, mask; + + ADDR = ((unsigned long *) addr) + (nr >> 5); + mask = 1 << (nr & 31); + + return ___change_bit(ADDR, mask) != 0; +} + +static inline void change_bit(unsigned long nr, volatile unsigned long *addr) +{ + unsigned long *ADDR, mask; + + ADDR = ((unsigned long *) addr) + (nr >> 5); + mask = 1 << (nr & 31); + + (void) ___change_bit(ADDR, mask); +} + +#include <asm-generic/bitops/non-atomic.h> + +#define smp_mb__before_clear_bit() do { } while(0) +#define smp_mb__after_clear_bit() do { } while(0) + +#include <asm-generic/bitops/ffz.h> +#include <asm-generic/bitops/__ffs.h> +#include <asm-generic/bitops/sched.h> +#include <asm-generic/bitops/ffs.h> +#include <asm-generic/bitops/fls.h> +#include <asm-generic/bitops/fls64.h> +#include <asm-generic/bitops/hweight.h> +#include <asm-generic/bitops/lock.h> +#include <asm-generic/bitops/find.h> +#include <asm-generic/bitops/ext2-non-atomic.h> +#include <asm-generic/bitops/ext2-atomic.h> +#include <asm-generic/bitops/minix.h> + +#endif /* __KERNEL__ */ + +#endif /* defined(_SPARC_BITOPS_H) */ |