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153 jermar 1
/*
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 * Copyright (c) 2005 Jakub Jermar
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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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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - 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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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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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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/** @addtogroup ia64   
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 * @{
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 */
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/** @file
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 */
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#ifndef KERN_ia64_BARRIER_H_
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#define KERN_ia64_BARRIER_H_
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/*
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 * TODO: Implement true IA-64 memory barriers for macros below.
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 */
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#define CS_ENTER_BARRIER()  memory_barrier()
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#define CS_LEAVE_BARRIER()  memory_barrier()
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#define memory_barrier()    asm volatile ("mf\n" ::: "memory")
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#define read_barrier()      memory_barrier()
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#define write_barrier()     memory_barrier()
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#define srlz_i()        \
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    asm volatile (";; srlz.i ;;\n" ::: "memory")
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#define srlz_d()        \
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    asm volatile (";; srlz.d\n" ::: "memory")
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#define fc_i(a)         \
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    asm volatile ("fc.i %0\n" : "r" ((a)) :: "memory")  
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#define sync_i()        \
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    asm volatile (";; sync.i\n" ::: "memory")
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#define smc_coherence(a)    \
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{               \
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    fc_i((a));      \
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    sync_i();       \
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    srlz_i();       \
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}
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#define FC_INVAL_MIN        32
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#define smc_coherence_block(a, l)       \
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{                       \
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    unsigned long i;            \
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    for (i = 0; i < (l); i += FC_INVAL_MIN) \
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        fc_i((void *)(a) + i);      \
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    sync_i();               \
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    srlz_i();               \
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}
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#endif
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/** @}
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 */