move config.h to urcu/config.h and install it
[urcu.git] / urcu / arch_s390.h
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1#ifndef _ARCH_S390_H
2#define _ARCH_S390_H
3
4/*
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5 * Trivial definitions for the S390 architecture based on information from the
6 * Principles of Operation "CPU Serialization" (5-91), "BRANCH ON CONDITION"
7 * (7-25) and "STORE CLOCK" (7-169).
ac26f1a8 8 *
7039fa6f 9 * Copyright (c) 2009 Novell, Inc.
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10 * Author: Jan Blunck <jblunck@suse.de>
11 *
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12 * Permission is hereby granted, free of charge, to any person obtaining a copy
13 * of this software and associated documentation files (the "Software"), to
14 * deal in the Software without restriction, including without limitation the
15 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
16 * sell copies of the Software, and to permit persons to whom the Software is
17 * furnished to do so, subject to the following conditions:
ac26f1a8 18 *
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19 * The above copyright notice and this permission notice shall be included in
20 * all copies or substantial portions of the Software.
ac26f1a8 21 *
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22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
25 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
26 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
28 * IN THE SOFTWARE.
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29 */
30
31#include <compiler.h>
c96a3726 32#include <config/config.h>
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33
34#define CONFIG_HAVE_MEM_COHERENCY
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35
36#ifndef BITS_PER_LONG
37#define BITS_PER_LONG (__SIZEOF_LONG__ * 8)
38#endif
39
40#define mb() __asm__ __volatile__("bcr 15,0" : : : "memory")
41#define rmb() __asm__ __volatile__("bcr 15,0" : : : "memory");
42#define wmb() __asm__ __volatile__("bcr 15,0" : : : "memory");
43#define mc() barrier()
44#define rmc() barrier()
45#define wmc() barrier()
46
47#define smp_mb() mb()
48#define smp_rmb() rmb()
49#define smp_wmb() wmb()
50#define smp_mc() mc()
51#define smp_rmc() rmc()
52#define smp_wmc() wmc()
53
54/* Nop everywhere except on alpha. */
55#define smp_read_barrier_depends()
56
57static inline void cpu_relax(void)
58{
59 barrier();
60}
61
62static inline void sync_core()
63{
64 __asm__ __volatile__("bcr 15,0" : : : "memory");
65}
66
67typedef unsigned long long cycles_t;
68
69static inline cycles_t get_cycles (void)
70{
71 cycles_t cycles;
72
73 __asm__ __volatile__("stck %0" : "=m" (cycles) : : "cc", "memory" );
74
75 return cycles;
76}
77
78#endif /* _ARCH_S390_H */
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