| 1 | /*************************************************************************** |
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| 2 | * |
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| 3 | * Copyright (C) 2001 International Business Machines |
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| 4 | * All rights reserved. |
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| 5 | * |
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| 6 | * This file is part of the GPFS mmfslinux kernel module. |
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| 7 | * |
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| 8 | * Redistribution and use in source and binary forms, with or without |
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| 9 | * modification, are permitted provided that the following conditions |
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| 10 | * are met: |
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| 11 | * |
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| 12 | * 1. Redistributions of source code must retain the above copyright notice, |
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| 13 | * this list of conditions and the following disclaimer. |
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| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 15 | * notice, this list of conditions and the following disclaimer in the |
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| 16 | * documentation and/or other materials provided with the distribution. |
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| 17 | * 3. The name of the author may not be used to endorse or promote products |
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| 18 | * derived from this software without specific prior written |
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| 19 | * permission. |
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| 20 | * |
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 22 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 23 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 24 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 25 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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| 26 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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| 27 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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| 28 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
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| 29 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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| 30 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 31 | * |
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| 32 | *************************************************************************** */ |
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| 33 | /* @(#)97 1.6 src/avs/fs/mmfs/ts/kernext/ibm-kxi/cxiAtomic.h, mmfs, avs_rgpfs24, rgpfs240610b 7/28/05 22:51:53 */ |
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| 34 | |
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| 35 | /* |
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| 36 | * Support for platform independant SMP synchronization operations |
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| 37 | * |
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| 38 | */ |
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| 39 | |
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| 40 | #ifndef _h_cxiAtomic |
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| 41 | #define _h_cxiAtomic |
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| 42 | |
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| 43 | /* Include platform specific interfaces */ |
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| 44 | #include <cxiAtomic-plat.h> |
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| 45 | |
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| 46 | /* Platform independant interface */ |
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| 47 | |
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| 48 | /* 32-bit invariant atomic operations */ |
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| 49 | #define ATOMIC_ADD(_v,_i) fetch_and_add((atomic_p)(_v), (int)(_i)) |
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| 50 | #define ATOMIC_AND(_v,_i) fetch_and_and((atomic_p)(_v), (uint)(_i)) |
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| 51 | #define ATOMIC_OR(_v,_i) fetch_and_or((atomic_p)(_v), (uint)(_i)) |
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| 52 | #define ATOMIC_SWAP(_v, _p, _i) compare_and_swap((atomic_p)(_v), (int *)(_p), (int)(_i)) |
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| 53 | #ifdef _KERNEL |
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| 54 | #define ATOMIC_SET(_v,_i) test_and_set((atomic_p)(_v), (int)(_i)) |
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| 55 | #endif /* _KERNEL */ |
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| 56 | |
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| 57 | /* 32-bit invariant macros with "no addresses" required for args */ |
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| 58 | #define ATOMIC_ADD_NA(_v, _i) fetch_and_add((atomic_p)&(_v), (int)(_i)) |
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| 59 | |
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| 60 | /* Variable size atomic operations (32/64-bit) */ |
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| 61 | /* These should be used with longs and pointers, ie, the natural word width */ |
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| 62 | #ifdef __64BIT__ |
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| 63 | #define ATOMIC_ADDLP(_v,_i) fetch_and_addlp((atomic_l)(_v), (long)(_i)) |
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| 64 | #define ATOMIC_ANDLP(_v,_i) fetch_and_andlp((atomic_l)(_v), (ulong)(_i)) |
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| 65 | #define ATOMIC_ORLP(_v,_i) fetch_and_orlp((atomic_l)(_v), (ulong)(_i)) |
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| 66 | #define ATOMIC_SWAPLP(_v, _p, _i) compare_and_swaplp((atomic_l)(_v), (long *)(_p), (long)(_i)) |
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| 67 | #ifdef _KERNEL |
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| 68 | #define ATOMIC_SETLP(_v,_i) test_and_setlp((atomic_l)(_v), (long)(_i)) |
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| 69 | #endif /* _KERNEL */ |
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| 70 | #else /* _ILP32 */ |
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| 71 | #define ATOMIC_ADDLP(_v,_i) ATOMIC_ADD(_v, _i) |
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| 72 | #define ATOMIC_ANDLP(_v,_i) ATOMIC_AND(_v, _i) |
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| 73 | #define ATOMIC_ORLP(_v,_i) ATOMIC_OR(_v, _i) |
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| 74 | #define ATOMIC_SWAPLP(_v, _p, _i) ATOMIC_SWAP(_v, _p, _i) |
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| 75 | #ifdef _KERNEL |
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| 76 | #define ATOMIC_SETLP(_v,_i) ATOMIC_SET(_v, _i) |
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| 77 | #endif |
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| 78 | #endif /* __64BIT__ */ |
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| 79 | |
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| 80 | /* 64-bit invariant atomic operations */ |
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| 81 | #ifdef __64BIT__ |
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| 82 | #define ATOMIC_ADD64(_v,_i) ATOMIC_ADDLP(_v, _i) |
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| 83 | #define ATOMIC_AND64(_v,_i) ATOMIC_ANDLP(_v,_i) |
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| 84 | #define ATOMIC_OR64(_v,_i) ATOMIC_ORLP(_v,_i) |
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| 85 | #define ATOMIC_SWAP64(_v, _p, _i) ATOMIC_SWAPLP(_v, _p, _i) |
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| 86 | #ifdef _KERNEL |
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| 87 | #define ATOMIC_SET64(_v,_i) ATOMIC_SETLP(_v, _i) |
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| 88 | #endif /* _KERNEL */ |
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| 89 | #endif /* __64BIT__ */ |
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| 90 | |
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| 91 | /* Mutex lockword operations */ |
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| 92 | #ifdef __64BIT__ |
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| 93 | #define GPFS_CHECK_LOCK(_v, _i1, _i2) _check_locklp((atomic_l)(_v), (long)(_i1), (long)(_i2)) |
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| 94 | #define LOCKWORD_SWAP ATOMIC_SWAP64 |
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| 95 | #define LOCKWORD_OR ATOMIC_OR64 |
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| 96 | #define LOCKWORD_AND ATOMIC_AND64 |
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| 97 | #else |
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| 98 | #define GPFS_CHECK_LOCK(_v, _i1, _i2) _check_lock((atomic_p)(_v), (int)(_i1), (int)(_i2)) |
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| 99 | #define LOCKWORD_SWAP ATOMIC_SWAP |
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| 100 | #define LOCKWORD_OR ATOMIC_OR |
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| 101 | #define LOCKWORD_AND ATOMIC_AND |
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| 102 | #endif /* 64b */ |
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| 103 | |
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| 104 | #endif /* _h_cxiAtomic */ |
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