1*ce099b40Smartin /* $NetBSD: bus_machdep.h,v 1.3 2008/04/28 20:23:21 martin Exp $ */ 21d1d5c87Stakemura 31d1d5c87Stakemura /*- 41d1d5c87Stakemura * Copyright (c) 1996, 1997, 1998, 2001 The NetBSD Foundation, Inc. 51d1d5c87Stakemura * All rights reserved. 61d1d5c87Stakemura * 71d1d5c87Stakemura * This code is derived from software contributed to The NetBSD Foundation 81d1d5c87Stakemura * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 91d1d5c87Stakemura * NASA Ames Research Center. 101d1d5c87Stakemura * 111d1d5c87Stakemura * Redistribution and use in source and binary forms, with or without 121d1d5c87Stakemura * modification, are permitted provided that the following conditions 131d1d5c87Stakemura * are met: 141d1d5c87Stakemura * 1. Redistributions of source code must retain the above copyright 151d1d5c87Stakemura * notice, this list of conditions and the following disclaimer. 161d1d5c87Stakemura * 2. Redistributions in binary form must reproduce the above copyright 171d1d5c87Stakemura * notice, this list of conditions and the following disclaimer in the 181d1d5c87Stakemura * documentation and/or other materials provided with the distribution. 191d1d5c87Stakemura * 201d1d5c87Stakemura * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 211d1d5c87Stakemura * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 221d1d5c87Stakemura * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 231d1d5c87Stakemura * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 241d1d5c87Stakemura * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 251d1d5c87Stakemura * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 261d1d5c87Stakemura * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 271d1d5c87Stakemura * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 281d1d5c87Stakemura * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 291d1d5c87Stakemura * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 301d1d5c87Stakemura * POSSIBILITY OF SUCH DAMAGE. 311d1d5c87Stakemura */ 321d1d5c87Stakemura 33c71c45f6She #ifndef _HPCMIPS_BUS_MACHDEP_H_ 34c71c45f6She #define _HPCMIPS_BUS_MACHDEP_H_ 351d1d5c87Stakemura 361d1d5c87Stakemura #ifdef BUS_SPACE_DEBUG 371d1d5c87Stakemura #include <sys/systm.h> /* for printf() prototype */ 381d1d5c87Stakemura /* 391d1d5c87Stakemura * Macros for checking the aligned-ness of pointers passed to bus 401d1d5c87Stakemura * space ops. Strict alignment is required by the MIPS architecture, 411d1d5c87Stakemura * and a trap will occur if unaligned access is performed. These 421d1d5c87Stakemura * may aid in the debugging of a broken device driver by displaying 431d1d5c87Stakemura * useful information about the problem. 441d1d5c87Stakemura */ 451d1d5c87Stakemura #define __BUS_SPACE_ALIGNED_ADDRESS(p, t) \ 461d1d5c87Stakemura ((((u_long)(p)) & (sizeof(t)-1)) == 0) 471d1d5c87Stakemura 481d1d5c87Stakemura #define __BUS_SPACE_ADDRESS_SANITY(p, t, d) \ 491d1d5c87Stakemura ({ \ 501d1d5c87Stakemura if (__BUS_SPACE_ALIGNED_ADDRESS((p), t) == 0) { \ 511d1d5c87Stakemura printf("%s 0x%lx not aligned to %d bytes %s:%d\n", \ 521d1d5c87Stakemura d, (u_long)(p), sizeof(t), __FILE__, __LINE__); \ 531d1d5c87Stakemura } \ 541d1d5c87Stakemura (void) 0; \ 551d1d5c87Stakemura }) 561d1d5c87Stakemura 571d1d5c87Stakemura #define BUS_SPACE_ALIGNED_POINTER(p, t) __BUS_SPACE_ALIGNED_ADDRESS(p, t) 581d1d5c87Stakemura #else 591d1d5c87Stakemura #define __BUS_SPACE_ADDRESS_SANITY(p,t,d) (void) 0 601d1d5c87Stakemura #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t) 611d1d5c87Stakemura #endif /* BUS_SPACE_DEBUG */ 621d1d5c87Stakemura 63c71c45f6She #endif /* _HPCMIPS_BUS_MACHDEP_H_ */ 64