1178172Simp/* $OpenBSD: param.h,v 1.11 1998/08/30 22:05:35 millert Exp $ */ 2178172Simp 3178172Simp/*- 4178172Simp * Copyright (c) 1988 University of Utah. 5178172Simp * Copyright (c) 1992, 1993 6178172Simp * The Regents of the University of California. All rights reserved. 7178172Simp * 8178172Simp * This code is derived from software contributed to Berkeley by 9178172Simp * the Systems Programming Group of the University of Utah Computer 10178172Simp * Science Department and Ralph Campbell. 11178172Simp * 12178172Simp * Redistribution and use in source and binary forms, with or without 13178172Simp * modification, are permitted provided that the following conditions 14178172Simp * are met: 15178172Simp * 1. Redistributions of source code must retain the above copyright 16178172Simp * notice, this list of conditions and the following disclaimer. 17178172Simp * 2. Redistributions in binary form must reproduce the above copyright 18178172Simp * notice, this list of conditions and the following disclaimer in the 19178172Simp * documentation and/or other materials provided with the distribution. 20178172Simp * 4. Neither the name of the University nor the names of its contributors 21178172Simp * may be used to endorse or promote products derived from this software 22178172Simp * without specific prior written permission. 23178172Simp * 24178172Simp * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25178172Simp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26178172Simp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27178172Simp * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28178172Simp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29178172Simp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30178172Simp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31178172Simp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32178172Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33178172Simp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34178172Simp * SUCH DAMAGE. 35178172Simp * 36178172Simp * from: Utah Hdr: machparam.h 1.11 89/08/14 37178172Simp * from: @(#)param.h 8.1 (Berkeley) 6/10/93 38178172Simp * JNPR: param.h,v 1.6.2.1 2007/09/10 07:49:36 girish 39178172Simp * $FreeBSD$ 40178172Simp */ 41178172Simp 42196994Sphk#ifndef _MIPS_INCLUDE_PARAM_H_ 43196994Sphk#define _MIPS_INCLUDE_PARAM_H_ 44178172Simp 45196994Sphk#include <machine/_align.h> 46196994Sphk 47178172Simp#include <sys/cdefs.h> 48178172Simp#ifdef _KERNEL 49206717Sjmallett#ifndef _LOCORE 50178172Simp#include <machine/cpu.h> 51178172Simp#endif 52178172Simp#endif 53178172Simp 54178172Simp#define __PCI_REROUTE_INTERRUPT 55178172Simp 56178172Simp#ifndef MACHINE 57178172Simp#define MACHINE "mips" 58178172Simp#endif 59178172Simp#ifndef MACHINE_ARCH 60215971Sjmallett#if _BYTE_ORDER == _BIG_ENDIAN 61215971Sjmallett#ifdef __mips_n64 62233644Sjmallett#define MACHINE_ARCH "mips64" 63232449Sjmallett#ifndef MACHINE_ARCH32 64233644Sjmallett#define MACHINE_ARCH32 "mips" 65232449Sjmallett#endif 66215971Sjmallett#elif defined(__mips_n32) 67233644Sjmallett#define MACHINE_ARCH "mipsn32" 68215971Sjmallett#else 69233644Sjmallett#define MACHINE_ARCH "mips" 70178172Simp#endif 71215971Sjmallett#else 72215971Sjmallett#ifdef __mips_n64 73215971Sjmallett#define MACHINE_ARCH "mips64el" 74232449Sjmallett#ifndef MACHINE_ARCH32 75232449Sjmallett#define MACHINE_ARCH32 "mipsel" 76232449Sjmallett#endif 77215971Sjmallett#elif defined(__mips_n32) 78215971Sjmallett#define MACHINE_ARCH "mipsn32el" 79215971Sjmallett#else 80215971Sjmallett#define MACHINE_ARCH "mipsel" 81215971Sjmallett#endif 82215971Sjmallett#endif 83215971Sjmallett#endif 84178172Simp 85178172Simp/* 86178172Simp * OBJFORMAT_NAMES is a comma-separated list of the object formats 87178172Simp * that are supported on the architecture. 88178172Simp */ 89178172Simp#define OBJFORMAT_NAMES "elf" 90178172Simp#define OBJFORMAT_DEFAULT "elf" 91178172Simp 92178172Simp#define MID_MACHINE 0 /* None but has to be defined */ 93178172Simp 94178172Simp#ifdef SMP 95208165Srrs#define MAXSMPCPU 32 96224207Sattilio#ifndef MAXCPU 97178172Simp#define MAXCPU MAXSMPCPU 98224207Sattilio#endif 99178172Simp#else 100178172Simp#define MAXSMPCPU 1 101178172Simp#define MAXCPU 1 102178172Simp#endif 103178172Simp 104250338Sattilio#ifndef MAXMEMDOM 105250338Sattilio#define MAXMEMDOM 1 106250338Sattilio#endif 107250338Sattilio 108178172Simp/* 109178172Simp * Round p (pointer or byte index) up to a correctly-aligned value for all 110178172Simp * data types (int, long, ...). The result is u_int and must be cast to 111178172Simp * any desired pointer type. 112178172Simp */ 113178172Simp 114178172Simp#define ALIGNBYTES _ALIGNBYTES 115178172Simp#define ALIGN(p) _ALIGN(p) 116195376Ssam/* 117195376Ssam * ALIGNED_POINTER is a boolean macro that checks whether an address 118195376Ssam * is valid to fetch data elements of type t from on this architecture. 119195376Ssam * This does not reflect the optimal alignment, just the possibility 120195376Ssam * (within reasonable limits). 121195376Ssam */ 122202031Simp#define ALIGNED_POINTER(p, t) ((((unsigned long)(p)) & (sizeof (t) - 1)) == 0) 123178172Simp 124191278Srwatson/* 125191278Srwatson * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 126191278Srwatson * architecture. It should be used with appropriate caution. 127191278Srwatson */ 128191276Srwatson#define CACHE_LINE_SHIFT 6 129191276Srwatson#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 130191276Srwatson 131217354Sjchandra#define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */ 132217354Sjchandra#define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */ 133217354Sjchandra#define PAGE_MASK (PAGE_SIZE-1) 134210627Sjchandra 135217354Sjchandra#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 136217354Sjchandra#define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t))) 137178172Simp 138217354Sjchandra#if defined(__mips_n32) || defined(__mips_n64) /* PHYSADDR_64_BIT */ 139217354Sjchandra#define NPTEPGSHIFT 9 /* LOG2(NPTEPG) */ 140210846Sjchandra#else 141217354Sjchandra#define NPTEPGSHIFT 10 /* LOG2(NPTEPG) */ 142210846Sjchandra#endif 143210627Sjchandra 144217354Sjchandra#ifdef __mips_n64 145217354Sjchandra#define NPDEPGSHIFT 9 /* LOG2(NPTEPG) */ 146217354Sjchandra#define SEGSHIFT (PAGE_SHIFT + NPTEPGSHIFT + NPDEPGSHIFT) 147217354Sjchandra#define NBSEG (1ul << SEGSHIFT) 148217354Sjchandra#define PDRSHIFT (PAGE_SHIFT + NPTEPGSHIFT) 149217354Sjchandra#define PDRMASK ((1 << PDRSHIFT) - 1) 150217354Sjchandra#else 151217354Sjchandra#define NPDEPGSHIFT 10 /* LOG2(NPTEPG) */ 152217354Sjchandra#define SEGSHIFT (PAGE_SHIFT + NPTEPGSHIFT) 153217354Sjchandra#define NBSEG (1 << SEGSHIFT) /* bytes/segment */ 154217354Sjchandra#define PDRSHIFT SEGSHIFT /* alias for SEG in 32 bit */ 155217354Sjchandra#define PDRMASK ((1 << PDRSHIFT) - 1) 156217354Sjchandra#endif 157217354Sjchandra#define NBPDR (1 << PDRSHIFT) /* bytes/pagedir */ 158217354Sjchandra#define SEGMASK (NBSEG - 1) /* byte offset into segment */ 159197316Salc 160217354Sjchandra#define MAXPAGESIZES 1 /* max supported pagesizes */ 161178172Simp 162217354Sjchandra#define MAXDUMPPGS 1 /* xxx: why is this only one? */ 163217354Sjchandra 164178172Simp/* 165205072Sneel * The kernel stack needs to be aligned on a (PAGE_SIZE * 2) boundary. 166178172Simp */ 167210846Sjchandra#define KSTACK_PAGES 2 /* kernel stack */ 168206819Sjmallett#define KSTACK_GUARD_PAGES 2 /* pages of kstack guard; 0 disables */ 169178172Simp 170178172Simp/* 171206746Sjmallett * Mach derived conversion macros 172178172Simp */ 173217354Sjchandra#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 174217354Sjchandra#define trunc_page(x) ((x) & ~PAGE_MASK) 175178172Simp 176217354Sjchandra#define atop(x) ((x) >> PAGE_SHIFT) 177217354Sjchandra#define ptoa(x) ((x) << PAGE_SHIFT) 178178172Simp 179217354Sjchandra#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 180206746Sjmallett 181274648Skib#ifdef _KERNEL 182274648Skib#define NO_FUEWORD 1 183274648Skib#endif 184274648Skib 185196994Sphk#endif /* !_MIPS_INCLUDE_PARAM_H_ */ 186