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c9f432b7ba
Update the OFED Infiniband core to the version supplied in Linux
version 3.7.
The update to OFED is nearly all additional defines and functions
with the exception of the addition of additional parameters to
ib_register_device() and the reg_user_mr callback.
In addition the ibcore (Infiniband core) and ipoib (IP over Infiniband)
have both been made into completely loadable modules to facilitate
testing of the OFED stack in FreeBSD.
Finally the Mellanox Infiniband drivers are now updated to the
latest version shipping with Linux 3.7.
Submitted by: Mellanox FreeBSD driver team:
Oded Shanoon (odeds mellanox.com),
Meny Yossefi (menyy mellanox.com),
Orit Moskovich (oritm mellanox.com)
Approved by: re
107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/*-
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* Copyright (c) 2010 Isilon Systems, Inc.
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* Copyright (c) 2010 iX Systems, Inc.
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* Copyright (c) 2010 Panasas, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _ASM_ATOMIC_H_
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#define _ASM_ATOMIC_H_
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <machine/atomic.h>
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#include <asm/atomic-long.h>
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typedef struct {
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volatile u_int counter;
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} atomic_t;
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#define atomic_add(i, v) atomic_add_return((i), (v))
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#define atomic_sub(i, v) atomic_sub_return((i), (v))
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#define atomic_inc_return(v) atomic_add_return(1, (v))
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#define atomic_add_negative(i, v) (atomic_add_return((i), (v)) < 0)
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#define atomic_sub_and_test(i, v) (atomic_sub_return((i), (v)) == 0)
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#define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0)
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#define atomic_inc_and_test(v) (atomic_add_return(1, (v)) == 0)
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#define atomic_dec_return(v) atomic_sub_return(1, (v))
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static inline int
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atomic_add_return(int i, atomic_t *v)
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{
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return i + atomic_fetchadd_int(&v->counter, i);
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}
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static inline int
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atomic_sub_return(int i, atomic_t *v)
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{
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return atomic_fetchadd_int(&v->counter, -i) - i;
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}
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static inline void
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atomic_set(atomic_t *v, int i)
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{
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atomic_store_rel_int(&v->counter, i);
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}
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static inline int
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atomic_read(atomic_t *v)
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{
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return atomic_load_acq_int(&v->counter);
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}
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static inline int
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atomic_inc(atomic_t *v)
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{
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return atomic_fetchadd_int(&v->counter, 1) + 1;
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}
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static inline int
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atomic_dec(atomic_t *v)
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{
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return atomic_fetchadd_int(&v->counter, -1) - 1;
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}
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static inline int atomic_add_unless(atomic_t *v, int a, int u)
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{
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int c, old;
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c = atomic_read(v);
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for (;;) {
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if (unlikely(c == (u)))
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break;
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// old = atomic_cmpxchg((v), c, c + (a)); /*Linux*/
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old = atomic_cmpset_int(&v->counter, c, c + (a));
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if (likely(old == c))
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break;
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c = old;
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}
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return c != (u);
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}
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#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
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#endif /* _ASM_ATOMIC_H_ */
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