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/*
* Copyright (c) 1997, by Steve Passe
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. The name of the developer may NOT be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _MACHINE_LOCK_H_
#define _MACHINE_LOCK_H_
#ifdef LOCORE
#ifdef SMP
#define MPLOCKED lock ;
/*
* Protects the IO APIC and apic_imen as a critical region.
*/
#define IMASK_LOCK MTX_LOCK_SPIN(_imen_mtx, 0)
#define IMASK_UNLOCK MTX_UNLOCK_SPIN(_imen_mtx)
#else /* SMP */
#define MPLOCKED /* NOP */
#define IMASK_LOCK /* NOP */
#define IMASK_UNLOCK /* NOP */
#endif /* SMP */
#else /* LOCORE */
#ifdef SMP
#include <machine/smptests.h> /** xxx_LOCK */
/*
* sio/cy lock.
* XXX should rc (RISCom/8) use this?
*/
#ifdef USE_COMLOCK
#define COM_LOCK() mtx_lock_spin(&com_mtx)
#define COM_UNLOCK() mtx_unlock_spin(&com_mtx)
#else
#define COM_LOCK()
#define COM_UNLOCK()
#endif /* USE_COMLOCK */
#else /* SMP */
#define COM_LOCK()
#define COM_UNLOCK()
#endif /* SMP */
/* global data in mp_machdep.c */
extern struct mtx imen_mtx;
extern struct mtx com_mtx;
extern struct mtx mcount_mtx;
extern struct mtx panic_mtx;
#endif /* LOCORE */
#endif /* !_MACHINE_LOCK_H_ */
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