param.h revision 139790
166458Sdfr/* $FreeBSD: head/sys/ia64/include/param.h 139790 2005-01-06 22:18:23Z imp $ */ 266458Sdfr/* From: NetBSD: param.h,v 1.20 1997/09/19 13:52:53 leo Exp */ 366458Sdfr 4139790Simp/*- 566458Sdfr * Copyright (c) 1988 University of Utah. 666458Sdfr * Copyright (c) 1992, 1993 766458Sdfr * The Regents of the University of California. All rights reserved. 866458Sdfr * 966458Sdfr * This code is derived from software contributed to Berkeley by 1066458Sdfr * the Systems Programming Group of the University of Utah Computer 1166458Sdfr * Science Department and Ralph Campbell. 1266458Sdfr * 1366458Sdfr * Redistribution and use in source and binary forms, with or without 1466458Sdfr * modification, are permitted provided that the following conditions 1566458Sdfr * are met: 1666458Sdfr * 1. Redistributions of source code must retain the above copyright 1766458Sdfr * notice, this list of conditions and the following disclaimer. 1866458Sdfr * 2. Redistributions in binary form must reproduce the above copyright 1966458Sdfr * notice, this list of conditions and the following disclaimer in the 2066458Sdfr * documentation and/or other materials provided with the distribution. 2166458Sdfr * 4. Neither the name of the University nor the names of its contributors 2266458Sdfr * may be used to endorse or promote products derived from this software 2366458Sdfr * without specific prior written permission. 2466458Sdfr * 2566458Sdfr * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2666458Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2766458Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2866458Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2966458Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 3066458Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3166458Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3266458Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3366458Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3466458Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3566458Sdfr * SUCH DAMAGE. 3666458Sdfr * 3766458Sdfr * from: Utah $Hdr: machparam.h 1.11 89/08/14$ 3866458Sdfr * 3966458Sdfr * @(#)param.h 8.1 (Berkeley) 6/10/93 4066458Sdfr */ 4166458Sdfr 4266458Sdfr/* 4366458Sdfr * Machine dependent constants for the IA64. 4466458Sdfr */ 4570508Sdfr/* 4670508Sdfr * Round p (pointer or byte index) up to a correctly-aligned value for all 4770508Sdfr * data types (int, long, ...). The result is u_long and must be cast to 4870508Sdfr * any desired pointer type. 4970508Sdfr * 5070508Sdfr * ALIGNED_POINTER is a boolean macro that checks whether an address 5170508Sdfr * is valid to fetch data elements of type t from on this architecture. 5270508Sdfr * This does not reflect the optimal alignment, just the possibility 5370508Sdfr * (within reasonable limits). 5470508Sdfr * 5570508Sdfr */ 5670508Sdfr#ifndef _ALIGNBYTES 57111031Smarcel#define _ALIGNBYTES 15 5870508Sdfr#endif 5970508Sdfr#ifndef _ALIGN 6070508Sdfr#define _ALIGN(p) (((u_long)(p) + _ALIGNBYTES) &~ _ALIGNBYTES) 6170508Sdfr#endif 6270508Sdfr#ifndef _ALIGNED_POINTER 6370508Sdfr#define _ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0) 6470508Sdfr#endif 6570508Sdfr 6666458Sdfr#ifndef _MACHINE 6766458Sdfr#define _MACHINE ia64 6866458Sdfr#endif 6996912Smarcel#ifndef _MACHINE_ARCH 7096912Smarcel#define _MACHINE_ARCH ia64 7196912Smarcel#endif 7296912Smarcel 7396912Smarcel#ifndef _NO_NAMESPACE_POLLUTION 7496912Smarcel 7596912Smarcel#ifndef _MACHINE_PARAM_H_ 7696912Smarcel#define _MACHINE_PARAM_H_ 7796912Smarcel 7866458Sdfr#ifndef MACHINE 7966458Sdfr#define MACHINE "ia64" 8066458Sdfr#endif 8166458Sdfr#ifndef MACHINE_ARCH 8266458Sdfr#define MACHINE_ARCH "ia64" 8366458Sdfr#endif 8466458Sdfr 8574733Sjhb#ifdef SMP 8674733Sjhb#define MAXCPU 16 8774733Sjhb#else 8874733Sjhb#define MAXCPU 1 8974733Sjhb#endif 9066458Sdfr 9166458Sdfr/* 9266458Sdfr * Round p (pointer or byte index) up to a correctly-aligned value for all 9366458Sdfr * data types (int, long, ...). The result is u_long and must be cast to 9466458Sdfr * any desired pointer type. 9566458Sdfr * 9666458Sdfr * ALIGNED_POINTER is a boolean macro that checks whether an address 9766458Sdfr * is valid to fetch data elements of type t from on this architecture. 9866458Sdfr * This does not reflect the optimal alignment, just the possibility 9966458Sdfr * (within reasonable limits). 10066458Sdfr * 10166458Sdfr */ 10270508Sdfr#define ALIGNBYTES _ALIGNBYTES 10370508Sdfr#define ALIGN(p) _ALIGN(p) 10470508Sdfr#define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t) 10566458Sdfr 106119347Smarcel#ifndef LOG2_PAGE_SIZE 107119347Smarcel#define LOG2_PAGE_SIZE 13 /* 8K pages by default. */ 10883198Sdfr#endif 109119347Smarcel#define PAGE_SHIFT (LOG2_PAGE_SIZE) 110119347Smarcel#define PAGE_SIZE (1<<(LOG2_PAGE_SIZE)) 11166458Sdfr#define PAGE_MASK (PAGE_SIZE-1) 11266458Sdfr#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 11366458Sdfr 11466458Sdfr#define CLSIZE 1 11566458Sdfr#define CLSIZELOG2 0 11666458Sdfr 11766458Sdfr/* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 11866458Sdfr#define SSIZE 1 /* initial stack size/NBPG */ 11966458Sdfr#define SINCR 1 /* increment of stack/NBPG */ 12066458Sdfr 121118239Speter#ifndef KSTACK_PAGES 12283366Sjulian#define KSTACK_PAGES 4 /* pages of kernel stack */ 123118239Speter#endif 124116355Salc#define KSTACK_GUARD_PAGES 0 /* pages of kstack guard; 0 disables */ 12566458Sdfr 12666458Sdfr/* 12766458Sdfr * Mach derived conversion macros 12866458Sdfr */ 12966458Sdfr#define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK)) 13066458Sdfr#define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK)) 13166458Sdfr 13266458Sdfr#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 13366458Sdfr#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 13466458Sdfr 13566458Sdfr#define ia64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 13666458Sdfr#define ia64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 13766458Sdfr 13866458Sdfr#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 13996912Smarcel 14096912Smarcel#endif /* !_MACHINE_PARAM_H_ */ 14196912Smarcel#endif /* !_NO_NAMESPACE_POLLUTION */ 142