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-rw-r--r--include/asm-frv/bitops.h83
1 files changed, 81 insertions, 2 deletions
diff --git a/include/asm-frv/bitops.h b/include/asm-frv/bitops.h
index 5f86b876b298..39456ba0ec17 100644
--- a/include/asm-frv/bitops.h
+++ b/include/asm-frv/bitops.h
@@ -16,8 +16,6 @@
16 16
17#include <linux/compiler.h> 17#include <linux/compiler.h>
18#include <asm/byteorder.h> 18#include <asm/byteorder.h>
19#include <asm/system.h>
20#include <asm/atomic.h>
21 19
22#ifdef __KERNEL__ 20#ifdef __KERNEL__
23 21
@@ -33,6 +31,87 @@
33#define smp_mb__before_clear_bit() barrier() 31#define smp_mb__before_clear_bit() barrier()
34#define smp_mb__after_clear_bit() barrier() 32#define smp_mb__after_clear_bit() barrier()
35 33
34#ifndef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
35static inline
36unsigned long atomic_test_and_ANDNOT_mask(unsigned long mask, volatile unsigned long *v)
37{
38 unsigned long old, tmp;
39
40 asm volatile(
41 "0: \n"
42 " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
43 " ckeq icc3,cc7 \n"
44 " ld.p %M0,%1 \n" /* LD.P/ORCR are atomic */
45 " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
46 " and%I3 %1,%3,%2 \n"
47 " cst.p %2,%M0 ,cc3,#1 \n" /* if store happens... */
48 " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* ... clear ICC3.Z */
49 " beq icc3,#0,0b \n"
50 : "+U"(*v), "=&r"(old), "=r"(tmp)
51 : "NPr"(~mask)
52 : "memory", "cc7", "cc3", "icc3"
53 );
54
55 return old;
56}
57
58static inline
59unsigned long atomic_test_and_OR_mask(unsigned long mask, volatile unsigned long *v)
60{
61 unsigned long old, tmp;
62
63 asm volatile(
64 "0: \n"
65 " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
66 " ckeq icc3,cc7 \n"
67 " ld.p %M0,%1 \n" /* LD.P/ORCR are atomic */
68 " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
69 " or%I3 %1,%3,%2 \n"
70 " cst.p %2,%M0 ,cc3,#1 \n" /* if store happens... */
71 " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* ... clear ICC3.Z */
72 " beq icc3,#0,0b \n"
73 : "+U"(*v), "=&r"(old), "=r"(tmp)
74 : "NPr"(mask)
75 : "memory", "cc7", "cc3", "icc3"
76 );
77
78 return old;
79}
80
81static inline
82unsigned long atomic_test_and_XOR_mask(unsigned long mask, volatile unsigned long *v)
83{
84 unsigned long old, tmp;
85
86 asm volatile(
87 "0: \n"
88 " orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
89 " ckeq icc3,cc7 \n"
90 " ld.p %M0,%1 \n" /* LD.P/ORCR are atomic */
91 " orcr cc7,cc7,cc3 \n" /* set CC3 to true */
92 " xor%I3 %1,%3,%2 \n"
93 " cst.p %2,%M0 ,cc3,#1 \n" /* if store happens... */
94 " corcc gr29,gr29,gr0 ,cc3,#1 \n" /* ... clear ICC3.Z */
95 " beq icc3,#0,0b \n"
96 : "+U"(*v), "=&r"(old), "=r"(tmp)
97 : "NPr"(mask)
98 : "memory", "cc7", "cc3", "icc3"
99 );
100
101 return old;
102}
103
104#else
105
106extern unsigned long atomic_test_and_ANDNOT_mask(unsigned long mask, volatile unsigned long *v);
107extern unsigned long atomic_test_and_OR_mask(unsigned long mask, volatile unsigned long *v);
108extern unsigned long atomic_test_and_XOR_mask(unsigned long mask, volatile unsigned long *v);
109
110#endif
111
112#define atomic_clear_mask(mask, v) atomic_test_and_ANDNOT_mask((mask), (v))
113#define atomic_set_mask(mask, v) atomic_test_and_OR_mask((mask), (v))
114
36static inline int test_and_clear_bit(int nr, volatile void *addr) 115static inline int test_and_clear_bit(int nr, volatile void *addr)
37{ 116{
38 volatile unsigned long *ptr = addr; 117 volatile unsigned long *ptr = addr;