1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * bitops.h: Bit string operations on the Sparc.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright 1995 David S. Miller (davem@caip.rutgers.edu)
6*4882a593Smuzhiyun * Copyright 1996 Eddie C. Dost (ecd@skynet.be)
7*4882a593Smuzhiyun * Copyright 2001 Anton Blanchard (anton@samba.org)
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #ifndef _SPARC_BITOPS_H
11*4882a593Smuzhiyun #define _SPARC_BITOPS_H
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include <linux/compiler.h>
14*4882a593Smuzhiyun #include <asm/byteorder.h>
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #ifdef __KERNEL__
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun #ifndef _LINUX_BITOPS_H
19*4882a593Smuzhiyun #error only <linux/bitops.h> can be included directly
20*4882a593Smuzhiyun #endif
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun unsigned long ___set_bit(unsigned long *addr, unsigned long mask);
23*4882a593Smuzhiyun unsigned long ___clear_bit(unsigned long *addr, unsigned long mask);
24*4882a593Smuzhiyun unsigned long ___change_bit(unsigned long *addr, unsigned long mask);
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun /*
27*4882a593Smuzhiyun * Set bit 'nr' in 32-bit quantity at address 'addr' where bit '0'
28*4882a593Smuzhiyun * is in the highest of the four bytes and bit '31' is the high bit
29*4882a593Smuzhiyun * within the first byte. Sparc is BIG-Endian. Unless noted otherwise
30*4882a593Smuzhiyun * all bit-ops return 0 if bit was previously clear and != 0 otherwise.
31*4882a593Smuzhiyun */
test_and_set_bit(unsigned long nr,volatile unsigned long * addr)32*4882a593Smuzhiyun static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *addr)
33*4882a593Smuzhiyun {
34*4882a593Smuzhiyun unsigned long *ADDR, mask;
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun ADDR = ((unsigned long *) addr) + (nr >> 5);
37*4882a593Smuzhiyun mask = 1 << (nr & 31);
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun return ___set_bit(ADDR, mask) != 0;
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun
set_bit(unsigned long nr,volatile unsigned long * addr)42*4882a593Smuzhiyun static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun unsigned long *ADDR, mask;
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun ADDR = ((unsigned long *) addr) + (nr >> 5);
47*4882a593Smuzhiyun mask = 1 << (nr & 31);
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun (void) ___set_bit(ADDR, mask);
50*4882a593Smuzhiyun }
51*4882a593Smuzhiyun
test_and_clear_bit(unsigned long nr,volatile unsigned long * addr)52*4882a593Smuzhiyun static inline int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
53*4882a593Smuzhiyun {
54*4882a593Smuzhiyun unsigned long *ADDR, mask;
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun ADDR = ((unsigned long *) addr) + (nr >> 5);
57*4882a593Smuzhiyun mask = 1 << (nr & 31);
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun return ___clear_bit(ADDR, mask) != 0;
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
clear_bit(unsigned long nr,volatile unsigned long * addr)62*4882a593Smuzhiyun static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
63*4882a593Smuzhiyun {
64*4882a593Smuzhiyun unsigned long *ADDR, mask;
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun ADDR = ((unsigned long *) addr) + (nr >> 5);
67*4882a593Smuzhiyun mask = 1 << (nr & 31);
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun (void) ___clear_bit(ADDR, mask);
70*4882a593Smuzhiyun }
71*4882a593Smuzhiyun
test_and_change_bit(unsigned long nr,volatile unsigned long * addr)72*4882a593Smuzhiyun static inline int test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
73*4882a593Smuzhiyun {
74*4882a593Smuzhiyun unsigned long *ADDR, mask;
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun ADDR = ((unsigned long *) addr) + (nr >> 5);
77*4882a593Smuzhiyun mask = 1 << (nr & 31);
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun return ___change_bit(ADDR, mask) != 0;
80*4882a593Smuzhiyun }
81*4882a593Smuzhiyun
change_bit(unsigned long nr,volatile unsigned long * addr)82*4882a593Smuzhiyun static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
83*4882a593Smuzhiyun {
84*4882a593Smuzhiyun unsigned long *ADDR, mask;
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun ADDR = ((unsigned long *) addr) + (nr >> 5);
87*4882a593Smuzhiyun mask = 1 << (nr & 31);
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun (void) ___change_bit(ADDR, mask);
90*4882a593Smuzhiyun }
91*4882a593Smuzhiyun
92*4882a593Smuzhiyun #include <asm-generic/bitops/non-atomic.h>
93*4882a593Smuzhiyun
94*4882a593Smuzhiyun #include <asm-generic/bitops/ffz.h>
95*4882a593Smuzhiyun #include <asm-generic/bitops/__ffs.h>
96*4882a593Smuzhiyun #include <asm-generic/bitops/sched.h>
97*4882a593Smuzhiyun #include <asm-generic/bitops/ffs.h>
98*4882a593Smuzhiyun #include <asm-generic/bitops/fls.h>
99*4882a593Smuzhiyun #include <asm-generic/bitops/__fls.h>
100*4882a593Smuzhiyun #include <asm-generic/bitops/fls64.h>
101*4882a593Smuzhiyun #include <asm-generic/bitops/hweight.h>
102*4882a593Smuzhiyun #include <asm-generic/bitops/lock.h>
103*4882a593Smuzhiyun #include <asm-generic/bitops/find.h>
104*4882a593Smuzhiyun #include <asm-generic/bitops/le.h>
105*4882a593Smuzhiyun #include <asm-generic/bitops/ext2-atomic.h>
106*4882a593Smuzhiyun
107*4882a593Smuzhiyun #endif /* __KERNEL__ */
108*4882a593Smuzhiyun
109*4882a593Smuzhiyun #endif /* defined(_SPARC_BITOPS_H) */
110