1/* $OpenBSD: param.h,v 1.11 1998/08/30 22:05:35 millert Exp $ */ 2 3/*- 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 * Copyright (c) 1988 University of Utah. 7 * Copyright (c) 1992, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * the Systems Programming Group of the University of Utah Computer 12 * Science Department and Ralph Campbell. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * from: Utah Hdr: machparam.h 1.11 89/08/14 39 * from: @(#)param.h 8.1 (Berkeley) 6/10/93 40 * JNPR: param.h,v 1.6.2.1 2007/09/10 07:49:36 girish 41 * $FreeBSD$ 42 */ 43 44#ifndef _MIPS_INCLUDE_PARAM_H_ 45#define _MIPS_INCLUDE_PARAM_H_ 46 47#include <machine/_align.h> 48 49#include <sys/cdefs.h> 50#ifdef _KERNEL 51#ifndef _LOCORE 52#include <machine/cpu.h> 53#endif 54#endif 55 56#define __PCI_REROUTE_INTERRUPT 57 58#if _BYTE_ORDER == _BIG_ENDIAN 59# define _EL_SUFFIX "" 60#else 61# define _EL_SUFFIX "el" 62#endif 63 64#ifdef __mips_n64 65# define _N64_SUFFIX "64" 66#elif defined(__mips_n32) 67# define _N64_SUFFIX "n32" 68#else 69# define _N64_SUFFIX "" 70#endif 71 72#ifdef __mips_hard_float 73# define _HF_SUFFIX "hf" 74#else 75# define _HF_SUFFIX "" 76#endif 77 78#ifndef MACHINE 79# define MACHINE "mips" 80#endif 81#ifndef MACHINE_ARCH 82# define MACHINE_ARCH "mips" _N64_SUFFIX _EL_SUFFIX _HF_SUFFIX 83#endif 84#ifdef __mips_n64 85# ifndef MACHINE_ARCH32 86# define MACHINE_ARCH32 "mips" _EL_SUFFIX _HF_SUFFIX 87# endif 88#endif 89 90/* 91 * OBJFORMAT_NAMES is a comma-separated list of the object formats 92 * that are supported on the architecture. 93 */ 94#define OBJFORMAT_NAMES "elf" 95#define OBJFORMAT_DEFAULT "elf" 96 97#define MID_MACHINE 0 /* None but has to be defined */ 98 99#ifdef SMP 100#define MAXSMPCPU 32 101#ifndef MAXCPU 102#define MAXCPU MAXSMPCPU 103#endif 104#else 105#define MAXSMPCPU 1 106#define MAXCPU 1 107#endif 108 109#ifndef MAXMEMDOM 110#define MAXMEMDOM 1 111#endif 112 113/* 114 * Round p (pointer or byte index) up to a correctly-aligned value for all 115 * data types (int, long, ...). The result is u_int and must be cast to 116 * any desired pointer type. 117 */ 118 119#define ALIGNBYTES _ALIGNBYTES 120#define ALIGN(p) _ALIGN(p) 121/* 122 * ALIGNED_POINTER is a boolean macro that checks whether an address 123 * is valid to fetch data elements of type t from on this architecture. 124 * This does not reflect the optimal alignment, just the possibility 125 * (within reasonable limits). 126 */ 127#define ALIGNED_POINTER(p, t) ((((unsigned long)(p)) & (sizeof (t) - 1)) == 0) 128 129/* 130 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 131 * architecture. It should be used with appropriate caution. 132 */ 133#define CACHE_LINE_SHIFT 6 134#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 135 136#define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */ 137#define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */ 138#define PAGE_MASK (PAGE_SIZE-1) 139 140#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 141#define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t))) 142 143#if defined(__mips_n32) || defined(__mips_n64) /* PHYSADDR_64_BIT */ 144#define NPTEPGSHIFT 9 /* LOG2(NPTEPG) */ 145#else 146#define NPTEPGSHIFT 10 /* LOG2(NPTEPG) */ 147#endif 148 149#ifdef __mips_n64 150#define NPDEPGSHIFT 9 /* LOG2(NPTEPG) */ 151#define SEGSHIFT (PAGE_SHIFT + NPTEPGSHIFT + NPDEPGSHIFT) 152#define NBSEG (1ul << SEGSHIFT) 153#define PDRSHIFT (PAGE_SHIFT + NPTEPGSHIFT) 154#define PDRSIZE (1ul << PDRSHIFT) 155#define PDRMASK ((1 << PDRSHIFT) - 1) 156#else 157#define NPDEPGSHIFT 10 /* LOG2(NPTEPG) */ 158#define SEGSHIFT (PAGE_SHIFT + NPTEPGSHIFT) 159#define NBSEG (1 << SEGSHIFT) /* bytes/segment */ 160#define PDRSHIFT SEGSHIFT /* alias for SEG in 32 bit */ 161#define PDRSIZE (1ul << PDRSHIFT) 162#define PDRMASK ((1 << PDRSHIFT) - 1) 163#endif 164#define NBPDR (1 << PDRSHIFT) /* bytes/pagedir */ 165#define SEGMASK (NBSEG - 1) /* byte offset into segment */ 166 167#define MAXPAGESIZES 1 /* max supported pagesizes */ 168 169#define MAXDUMPPGS 1 /* xxx: why is this only one? */ 170 171/* 172 * The kernel stack needs to be aligned on a (PAGE_SIZE * 2) boundary. 173 */ 174#define KSTACK_PAGES 2 /* kernel stack */ 175#define KSTACK_GUARD_PAGES 2 /* pages of kstack guard; 0 disables */ 176 177/* 178 * Mach derived conversion macros 179 */ 180#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 181#define trunc_page(x) ((x) & ~PAGE_MASK) 182 183#define atop(x) ((x) >> PAGE_SHIFT) 184#define ptoa(x) ((x) << PAGE_SHIFT) 185 186#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 187 188#endif /* !_MIPS_INCLUDE_PARAM_H_ */ 189