param.h revision 210846
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: head/sys/mips/include/param.h 210846 2010-08-04 14:12:09Z jchandra $ 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 60178172Simp#define MACHINE_ARCH "mips" 61178172Simp#endif 62178172Simp 63178172Simp/* 64178172Simp * OBJFORMAT_NAMES is a comma-separated list of the object formats 65178172Simp * that are supported on the architecture. 66178172Simp */ 67178172Simp#define OBJFORMAT_NAMES "elf" 68178172Simp#define OBJFORMAT_DEFAULT "elf" 69178172Simp 70178172Simp#define MID_MACHINE 0 /* None but has to be defined */ 71178172Simp 72178172Simp#ifdef SMP 73208165Srrs#define MAXSMPCPU 32 74178172Simp#define MAXCPU MAXSMPCPU 75178172Simp#else 76178172Simp#define MAXSMPCPU 1 77178172Simp#define MAXCPU 1 78178172Simp#endif 79178172Simp 80178172Simp/* 81178172Simp * Round p (pointer or byte index) up to a correctly-aligned value for all 82178172Simp * data types (int, long, ...). The result is u_int and must be cast to 83178172Simp * any desired pointer type. 84178172Simp */ 85178172Simp 86178172Simp#define ALIGNBYTES _ALIGNBYTES 87178172Simp#define ALIGN(p) _ALIGN(p) 88195376Ssam/* 89195376Ssam * ALIGNED_POINTER is a boolean macro that checks whether an address 90195376Ssam * is valid to fetch data elements of type t from on this architecture. 91195376Ssam * This does not reflect the optimal alignment, just the possibility 92195376Ssam * (within reasonable limits). 93195376Ssam */ 94202031Simp#define ALIGNED_POINTER(p, t) ((((unsigned long)(p)) & (sizeof (t) - 1)) == 0) 95178172Simp 96191278Srwatson/* 97191278Srwatson * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 98191278Srwatson * architecture. It should be used with appropriate caution. 99191278Srwatson */ 100191276Srwatson#define CACHE_LINE_SHIFT 6 101191276Srwatson#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 102191276Srwatson 103178172Simp#define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */ 104178172Simp#define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */ 105178172Simp#define PAGE_MASK (PAGE_SIZE-1) 106210627Sjchandra 107178172Simp#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 108206746Sjmallett#define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t))) 109178172Simp 110210846Sjchandra#if defined(__mips_n64) 111210846Sjchandra#define SEGSHIFT 31 /* LOG2(NBSEG) */ 112210846Sjchandra#define NBSEG (1ul << SEGSHIFT) /* bytes/segment */ 113210846Sjchandra#define PDRSHIFT 22 /* second level */ 114210846Sjchandra#define PDRMASK ((1 << PDRSHIFT) - 1) 115210846Sjchandra#else 116210627Sjchandra#define SEGSHIFT 22 /* LOG2(NBSEG) */ 117210627Sjchandra#define NBSEG (1 << SEGSHIFT) /* bytes/segment */ 118210846Sjchandra#define PDRSHIFT SEGSHIFT /* alias for SEG in 32 bit */ 119210846Sjchandra#define PDRMASK ((1 << PDRSHIFT) - 1) 120210846Sjchandra#endif 121210846Sjchandra#define NBPDR (1 << PDRSHIFT) /* bytes/pagedir */ 122210627Sjchandra#define SEGMASK (NBSEG-1) /* byte offset into segment */ 123210627Sjchandra 124197316Salc#define MAXPAGESIZES 1 /* maximum number of supported page sizes */ 125197316Salc 126183441Simp#define BLKDEV_IOSIZE 2048 /* xxx: Why is this 1/2 page? */ 127183441Simp#define MAXDUMPPGS 1 /* xxx: why is this only one? */ 128178172Simp 129178172Simp/* 130205072Sneel * The kernel stack needs to be aligned on a (PAGE_SIZE * 2) boundary. 131178172Simp */ 132210846Sjchandra#define KSTACK_PAGES 2 /* kernel stack */ 133206819Sjmallett#define KSTACK_GUARD_PAGES 2 /* pages of kstack guard; 0 disables */ 134178172Simp 135178172Simp#define UPAGES 2 136178172Simp 137178172Simp/* pages ("clicks") (4096 bytes) to disk blocks */ 138206746Sjmallett#define ctod(x) ((x) << (PAGE_SHIFT - DEV_BSHIFT)) 139206746Sjmallett#define dtoc(x) ((x) >> (PAGE_SHIFT - DEV_BSHIFT)) 140178172Simp 141178172Simp/* 142178172Simp * Map a ``block device block'' to a file system block. 143178172Simp * This should be device dependent, and should use the bsize 144178172Simp * field from the disk label. 145178172Simp * For now though just use DEV_BSIZE. 146178172Simp */ 147178172Simp#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 148178172Simp 149178172Simp/* 150206746Sjmallett * Mach derived conversion macros 151178172Simp */ 152206746Sjmallett#define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK) 153206746Sjmallett#define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK) 154178172Simp 155206746Sjmallett#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 156206746Sjmallett#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 157178172Simp 158206746Sjmallett#define mips_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 159206746Sjmallett#define mips_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 160206746Sjmallett 161206746Sjmallett#define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024)) 162206746Sjmallett 163178172Simp#ifndef _KERNEL 164178172Simp#define DELAY(n) { register int N = (n); while (--N > 0); } 165178172Simp#endif /* !_KERNEL */ 166178172Simp 167196994Sphk#endif /* !_MIPS_INCLUDE_PARAM_H_ */ 168