1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * bitops.h: Bit string operations on the Sparc. 4 * 5 * Copyright 1995 David S. Miller (davem@caip.rutgers.edu) 6 * Copyright 1996 Eddie C. Dost (ecd@skynet.be) 7 * Copyright 2001 Anton Blanchard (anton@samba.org) 8 */ 9 10 #ifndef _SPARC_BITOPS_H 11 #define _SPARC_BITOPS_H 12 13 #include <linux/compiler.h> 14 #include <asm/byteorder.h> 15 16 #ifdef __KERNEL__ 17 18 #ifndef _LINUX_BITOPS_H 19 #error only <linux/bitops.h> can be included directly 20 #endif 21 22 unsigned long ___set_bit(unsigned long *addr, unsigned long mask); 23 unsigned long ___clear_bit(unsigned long *addr, unsigned long mask); 24 unsigned long ___change_bit(unsigned long *addr, unsigned long mask); 25 26 /* 27 * Set bit 'nr' in 32-bit quantity at address 'addr' where bit '0' 28 * is in the highest of the four bytes and bit '31' is the high bit 29 * within the first byte. Sparc is BIG-Endian. Unless noted otherwise 30 * all bit-ops return 0 if bit was previously clear and != 0 otherwise. 31 */ 32 static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *addr) 33 { 34 unsigned long *ADDR, mask; 35 36 ADDR = ((unsigned long *) addr) + (nr >> 5); 37 mask = 1 << (nr & 31); 38 39 return ___set_bit(ADDR, mask) != 0; 40 } 41 42 static inline void set_bit(unsigned long nr, volatile unsigned long *addr) 43 { 44 unsigned long *ADDR, mask; 45 46 ADDR = ((unsigned long *) addr) + (nr >> 5); 47 mask = 1 << (nr & 31); 48 49 (void) ___set_bit(ADDR, mask); 50 } 51 52 static inline int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr) 53 { 54 unsigned long *ADDR, mask; 55 56 ADDR = ((unsigned long *) addr) + (nr >> 5); 57 mask = 1 << (nr & 31); 58 59 return ___clear_bit(ADDR, mask) != 0; 60 } 61 62 static inline void clear_bit(unsigned long nr, volatile unsigned long *addr) 63 { 64 unsigned long *ADDR, mask; 65 66 ADDR = ((unsigned long *) addr) + (nr >> 5); 67 mask = 1 << (nr & 31); 68 69 (void) ___clear_bit(ADDR, mask); 70 } 71 72 static inline int test_and_change_bit(unsigned long nr, volatile unsigned long *addr) 73 { 74 unsigned long *ADDR, mask; 75 76 ADDR = ((unsigned long *) addr) + (nr >> 5); 77 mask = 1 << (nr & 31); 78 79 return ___change_bit(ADDR, mask) != 0; 80 } 81 82 static inline void change_bit(unsigned long nr, volatile unsigned long *addr) 83 { 84 unsigned long *ADDR, mask; 85 86 ADDR = ((unsigned long *) addr) + (nr >> 5); 87 mask = 1 << (nr & 31); 88 89 (void) ___change_bit(ADDR, mask); 90 } 91 92 #include <asm-generic/bitops/non-atomic.h> 93 94 #include <asm-generic/bitops/ffz.h> 95 #include <asm-generic/bitops/__ffs.h> 96 #include <asm-generic/bitops/sched.h> 97 #include <asm-generic/bitops/ffs.h> 98 #include <asm-generic/bitops/fls.h> 99 #include <asm-generic/bitops/__fls.h> 100 #include <asm-generic/bitops/fls64.h> 101 #include <asm-generic/bitops/hweight.h> 102 #include <asm-generic/bitops/lock.h> 103 #include <asm-generic/bitops/le.h> 104 #include <asm-generic/bitops/ext2-atomic.h> 105 106 #endif /* __KERNEL__ */ 107 108 #endif /* defined(_SPARC_BITOPS_H) */ 109