/*      $NetBSD: bus_machdep.h,v 1.3 2008/04/28 20:23:21 martin Exp $   */

/*-
* Copyright (c) 1996, 1997, 1998, 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

#ifndef _HPCMIPS_BUS_MACHDEP_H_
#define _HPCMIPS_BUS_MACHDEP_H_

#ifdef BUS_SPACE_DEBUG
#include <sys/systm.h> /* for printf() prototype */
/*
* Macros for checking the aligned-ness of pointers passed to bus
* space ops.  Strict alignment is required by the MIPS architecture,
* and a trap will occur if unaligned access is performed.  These
* may aid in the debugging of a broken device driver by displaying
* useful information about the problem.
*/
#define __BUS_SPACE_ALIGNED_ADDRESS(p, t)                               \
       ((((u_long)(p)) & (sizeof(t)-1)) == 0)

#define __BUS_SPACE_ADDRESS_SANITY(p, t, d)                             \
({                                                                      \
       if (__BUS_SPACE_ALIGNED_ADDRESS((p), t) == 0) {                 \
               printf("%s 0x%lx not aligned to %d bytes %s:%d\n",      \
                   d, (u_long)(p), sizeof(t), __FILE__, __LINE__);     \
       }                                                               \
       (void) 0;                                                       \
})

#define BUS_SPACE_ALIGNED_POINTER(p, t) __BUS_SPACE_ALIGNED_ADDRESS(p, t)
#else
#define __BUS_SPACE_ADDRESS_SANITY(p,t,d)       (void) 0
#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
#endif /* BUS_SPACE_DEBUG */

#endif /* _HPCMIPS_BUS_MACHDEP_H_ */