projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> | |
| 41 | #include "generic/rte_spinlock.h" | |
| 42 | ||
| 43 | /* Fixme: Use intrinsics to implement the spinlock on Power architecture */ | |
| 44 | ||
| 45 | #ifndef RTE_FORCE_INTRINSICS | |
| 46 | ||
| 47 | static inline void | |
| 48 | rte_spinlock_lock(rte_spinlock_t *sl) | |
| 49 | { | |
| 50 | while (__sync_lock_test_and_set(&sl->locked, 1)) | |
| 51 | while (sl->locked) | |
| 52 | rte_pause(); | |
| 53 | } | |
| 54 | ||
| 55 | static inline void | |
| 56 | rte_spinlock_unlock(rte_spinlock_t *sl) | |
| 57 | { | |
| 58 | __sync_lock_release(&sl->locked); | |
| 59 | } | |
| 60 | ||
| 61 | static inline int | |
| 62 | rte_spinlock_trylock(rte_spinlock_t *sl) | |
| 63 | { | |
| 64 | return __sync_lock_test_and_set(&sl->locked, 1) == 0; | |
| 65 | } | |
| 66 | ||
| 67 | #endif | |
| 68 | ||
| 69 | static inline int rte_tm_supported(void) | |
| 70 | { | |
| 71 | return 0; | |
| 72 | } | |
| 73 | ||
| 74 | static inline void | |
| 75 | rte_spinlock_lock_tm(rte_spinlock_t *sl) | |
| 76 | { | |
| 77 | rte_spinlock_lock(sl); /* fall-back */ | |
| 78 | } | |
| 79 | ||
| 80 | static inline int | |
| 81 | rte_spinlock_trylock_tm(rte_spinlock_t *sl) | |
| 82 | { | |
| 83 | return rte_spinlock_trylock(sl); | |
| 84 | } | |
| 85 | ||
| 86 | static inline void | |
| 87 | rte_spinlock_unlock_tm(rte_spinlock_t *sl) | |
| 88 | { | |
| 89 | rte_spinlock_unlock(sl); | |
| 90 | } | |
| 91 | ||
| 92 | static inline void | |
| 93 | rte_spinlock_recursive_lock_tm(rte_spinlock_recursive_t *slr) | |
| 94 | { | |
| 95 | rte_spinlock_recursive_lock(slr); /* fall-back */ | |
| 96 | } | |
| 97 | ||
| 98 | static inline void | |
| 99 | rte_spinlock_recursive_unlock_tm(rte_spinlock_recursive_t *slr) | |
| 100 | { | |
| 101 | rte_spinlock_recursive_unlock(slr); | |
| 102 | } | |
| 103 | ||
| 104 | static inline int | |
| 105 | rte_spinlock_recursive_trylock_tm(rte_spinlock_recursive_t *slr) | |
| 106 | { | |
| 107 | return rte_spinlock_recursive_trylock(slr); | |
| 108 | } | |
| 109 | ||
| 110 | #ifdef __cplusplus | |
| 111 | } | |
| 112 | #endif | |
| 113 | ||
| 114 | #endif /* _RTE_SPINLOCK_PPC_64_H_ */ |