1/* $OpenBSD: param.h,v 1.11 1998/08/30 22:05:35 millert Exp $ */ 2 3/*- 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department and Ralph Campbell. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah Hdr: machparam.h 1.11 89/08/14 37 * from: @(#)param.h 8.1 (Berkeley) 6/10/93 38 * JNPR: param.h,v 1.6.2.1 2007/09/10 07:49:36 girish 39 * $FreeBSD$ 40 */ 41 42#ifndef _MIPS_INCLUDE_PARAM_H_ 43#define _MIPS_INCLUDE_PARAM_H_ 44 45#include <machine/_align.h> 46 47#include <sys/cdefs.h> 48#ifdef _KERNEL 49#ifndef _LOCORE 50#include <machine/cpu.h> 51#endif 52#endif 53 54#define __PCI_REROUTE_INTERRUPT 55 56#ifndef MACHINE 57#define MACHINE "mips" 58#endif 59#ifndef MACHINE_ARCH 60#if _BYTE_ORDER == _BIG_ENDIAN 61#ifdef __mips_n64 62#define MACHINE_ARCH "mips64" 63#ifndef MACHINE_ARCH32 64#define MACHINE_ARCH32 "mips" 65#endif 66#elif defined(__mips_n32) 67#define MACHINE_ARCH "mipsn32" 68#else 69#define MACHINE_ARCH "mips" 70#endif 71#else 72#ifdef __mips_n64 73#define MACHINE_ARCH "mips64el" 74#ifndef MACHINE_ARCH32 75#define MACHINE_ARCH32 "mipsel" 76#endif 77#elif defined(__mips_n32) 78#define MACHINE_ARCH "mipsn32el" 79#else 80#define MACHINE_ARCH "mipsel" 81#endif 82#endif 83#endif 84 85/* 86 * OBJFORMAT_NAMES is a comma-separated list of the object formats 87 * that are supported on the architecture. 88 */ 89#define OBJFORMAT_NAMES "elf" 90#define OBJFORMAT_DEFAULT "elf" 91 92#define MID_MACHINE 0 /* None but has to be defined */ 93 94#ifdef SMP 95#define MAXSMPCPU 32 96#ifndef MAXCPU 97#define MAXCPU MAXSMPCPU 98#endif 99#else 100#define MAXSMPCPU 1 101#define MAXCPU 1 102#endif 103 104#ifndef MAXMEMDOM 105#define MAXMEMDOM 1 106#endif 107 108/* 109 * Round p (pointer or byte index) up to a correctly-aligned value for all 110 * data types (int, long, ...). The result is u_int and must be cast to 111 * any desired pointer type. 112 */ 113 114#define ALIGNBYTES _ALIGNBYTES 115#define ALIGN(p) _ALIGN(p) 116/* 117 * ALIGNED_POINTER is a boolean macro that checks whether an address 118 * is valid to fetch data elements of type t from on this architecture. 119 * This does not reflect the optimal alignment, just the possibility 120 * (within reasonable limits). 121 */ 122#define ALIGNED_POINTER(p, t) ((((unsigned long)(p)) & (sizeof (t) - 1)) == 0) 123 124/* 125 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 126 * architecture. It should be used with appropriate caution. 127 */ 128#define CACHE_LINE_SHIFT 6 129#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 130 131#define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */ 132#define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */ 133#define PAGE_MASK (PAGE_SIZE-1) 134 135#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 136#define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t))) 137 138#if defined(__mips_n32) || defined(__mips_n64) /* PHYSADDR_64_BIT */ 139#define NPTEPGSHIFT 9 /* LOG2(NPTEPG) */ 140#else 141#define NPTEPGSHIFT 10 /* LOG2(NPTEPG) */ 142#endif 143 144#ifdef __mips_n64 145#define NPDEPGSHIFT 9 /* LOG2(NPTEPG) */ 146#define SEGSHIFT (PAGE_SHIFT + NPTEPGSHIFT + NPDEPGSHIFT) 147#define NBSEG (1ul << SEGSHIFT) 148#define PDRSHIFT (PAGE_SHIFT + NPTEPGSHIFT) 149#define PDRSIZE (1ul << PDRSHIFT) 150#define PDRMASK ((1 << PDRSHIFT) - 1) 151#else 152#define NPDEPGSHIFT 10 /* LOG2(NPTEPG) */ 153#define SEGSHIFT (PAGE_SHIFT + NPTEPGSHIFT) 154#define NBSEG (1 << SEGSHIFT) /* bytes/segment */ 155#define PDRSHIFT SEGSHIFT /* alias for SEG in 32 bit */ 156#define PDRSIZE (1ul << PDRSHIFT) 157#define PDRMASK ((1 << PDRSHIFT) - 1) 158#endif 159#define NBPDR (1 << PDRSHIFT) /* bytes/pagedir */ 160#define SEGMASK (NBSEG - 1) /* byte offset into segment */ 161 162#define MAXPAGESIZES 1 /* max supported pagesizes */ 163 164#define MAXDUMPPGS 1 /* xxx: why is this only one? */ 165 166/* 167 * The kernel stack needs to be aligned on a (PAGE_SIZE * 2) boundary. 168 */ 169#define KSTACK_PAGES 2 /* kernel stack */ 170#define KSTACK_GUARD_PAGES 2 /* pages of kstack guard; 0 disables */ 171 172/* 173 * Mach derived conversion macros 174 */ 175#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 176#define trunc_page(x) ((x) & ~PAGE_MASK) 177 178#define atop(x) ((x) >> PAGE_SHIFT) 179#define ptoa(x) ((x) << PAGE_SHIFT) 180 181#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 182 183#ifdef _KERNEL 184#define NO_FUEWORD 1 185#endif 186 187#endif /* !_MIPS_INCLUDE_PARAM_H_ */ 188