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7c673cae FG |
1 | /* |
2 | * BSD LICENSE | |
3 | * | |
4 | * Copyright (C) IBM Corporation 2014. | |
5 | * | |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions | |
8 | * are met: | |
9 | * | |
10 | * * Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions and the following disclaimer. | |
12 | * * Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in | |
14 | * the documentation and/or other materials provided with the | |
15 | * distribution. | |
16 | * * Neither the name of IBM Corporation nor the names of its | |
17 | * contributors may be used to endorse or promote products derived | |
18 | * from this software without specific prior written permission. | |
19 | * | |
20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
21 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
24 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
25 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
26 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
30 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
31 | */ | |
32 | ||
33 | #ifndef _RTE_SPINLOCK_PPC_64_H_ | |
34 | #define _RTE_SPINLOCK_PPC_64_H_ | |
35 | ||
36 | #ifdef __cplusplus | |
37 | extern "C" { | |
38 | #endif | |
39 | ||
40 | #include <rte_common.h> | |
11fdf7f2 | 41 | #include <rte_pause.h> |
7c673cae FG |
42 | #include "generic/rte_spinlock.h" |
43 | ||
44 | /* Fixme: Use intrinsics to implement the spinlock on Power architecture */ | |
45 | ||
46 | #ifndef RTE_FORCE_INTRINSICS | |
47 | ||
48 | static inline void | |
49 | rte_spinlock_lock(rte_spinlock_t *sl) | |
50 | { | |
51 | while (__sync_lock_test_and_set(&sl->locked, 1)) | |
52 | while (sl->locked) | |
53 | rte_pause(); | |
54 | } | |
55 | ||
56 | static inline void | |
57 | rte_spinlock_unlock(rte_spinlock_t *sl) | |
58 | { | |
59 | __sync_lock_release(&sl->locked); | |
60 | } | |
61 | ||
62 | static inline int | |
63 | rte_spinlock_trylock(rte_spinlock_t *sl) | |
64 | { | |
65 | return __sync_lock_test_and_set(&sl->locked, 1) == 0; | |
66 | } | |
67 | ||
68 | #endif | |
69 | ||
70 | static inline int rte_tm_supported(void) | |
71 | { | |
72 | return 0; | |
73 | } | |
74 | ||
75 | static inline void | |
76 | rte_spinlock_lock_tm(rte_spinlock_t *sl) | |
77 | { | |
78 | rte_spinlock_lock(sl); /* fall-back */ | |
79 | } | |
80 | ||
81 | static inline int | |
82 | rte_spinlock_trylock_tm(rte_spinlock_t *sl) | |
83 | { | |
84 | return rte_spinlock_trylock(sl); | |
85 | } | |
86 | ||
87 | static inline void | |
88 | rte_spinlock_unlock_tm(rte_spinlock_t *sl) | |
89 | { | |
90 | rte_spinlock_unlock(sl); | |
91 | } | |
92 | ||
93 | static inline void | |
94 | rte_spinlock_recursive_lock_tm(rte_spinlock_recursive_t *slr) | |
95 | { | |
96 | rte_spinlock_recursive_lock(slr); /* fall-back */ | |
97 | } | |
98 | ||
99 | static inline void | |
100 | rte_spinlock_recursive_unlock_tm(rte_spinlock_recursive_t *slr) | |
101 | { | |
102 | rte_spinlock_recursive_unlock(slr); | |
103 | } | |
104 | ||
105 | static inline int | |
106 | rte_spinlock_recursive_trylock_tm(rte_spinlock_recursive_t *slr) | |
107 | { | |
108 | return rte_spinlock_recursive_trylock(slr); | |
109 | } | |
110 | ||
111 | #ifdef __cplusplus | |
112 | } | |
113 | #endif | |
114 | ||
115 | #endif /* _RTE_SPINLOCK_PPC_64_H_ */ |