1/* $FreeBSD$ */ 2/* From: NetBSD: param.h,v 1.20 1997/09/19 13:52:53 leo Exp */ 3 4/*- 5 * Copyright (c) 1988 University of Utah. 6 * Copyright (c) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * the Systems Programming Group of the University of Utah Computer 11 * Science Department and Ralph Campbell. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: Utah $Hdr: machparam.h 1.11 89/08/14$ 38 * 39 * @(#)param.h 8.1 (Berkeley) 6/10/93 40 */ 41 42#ifndef _IA64_INCLUDE_PARAM_H_ 43#define _IA64_INCLUDE_PARAM_H_ 44 45/* 46 * Machine dependent constants for the IA64. 47 */ 48 49#include <machine/_align.h> 50 51#define __HAVE_ACPI 52#define __PCI_REROUTE_INTERRUPT 53 54#ifndef MACHINE 55#define MACHINE "ia64" 56#endif 57#ifndef MACHINE_ARCH 58#define MACHINE_ARCH "ia64" 59#endif 60#ifndef MACHINE_ARCH32 61#define MACHINE_ARCH32 "i386" 62#endif 63 64#if defined(SMP) || defined(KLD_MODULE) 65#ifndef MAXCPU 66#define MAXCPU 64 67#endif 68#else 69#define MAXCPU 1 70#endif 71 72#ifndef MAXMEMDOM 73#define MAXMEMDOM 1 74#endif 75 76#define ALIGNBYTES _ALIGNBYTES 77#define ALIGN(p) _ALIGN(p) 78/* 79 * ALIGNED_POINTER is a boolean macro that checks whether an address 80 * is valid to fetch data elements of type t from on this architecture. 81 * This does not reflect the optimal alignment, just the possibility 82 * (within reasonable limits). 83 */ 84#define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0) 85 86/* 87 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 88 * architecture. It should be used with appropriate caution. 89 */ 90#define CACHE_LINE_SHIFT 7 91#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 92 93#ifndef LOG2_PAGE_SIZE 94#define LOG2_PAGE_SIZE 13 /* 8K pages by default. */ 95#endif 96#define PAGE_SHIFT (LOG2_PAGE_SIZE) 97#define PAGE_SIZE (1<<(LOG2_PAGE_SIZE)) 98#define PAGE_MASK (PAGE_SIZE-1) 99#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 100 101#define MAXPAGESIZES 1 /* maximum number of supported page sizes */ 102 103#ifndef KSTACK_PAGES 104#define KSTACK_PAGES 4 /* pages of kernel stack */ 105#endif 106#define KSTACK_GUARD_PAGES 0 /* pages of kstack guard; 0 disables */ 107 108/* The default size of identity mappings in region 6 & 7. */ 109#ifndef LOG2_ID_PAGE_SIZE 110#define LOG2_ID_PAGE_SIZE 16 111#endif 112 113/* 114 * Mach derived conversion macros 115 */ 116#define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK)) 117#define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK)) 118 119#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 120#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 121 122#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 123 124#endif /* !_IA64_INCLUDE_PARAM_H_ */ 125