param.h revision 1.30
1/* $NetBSD: param.h,v 1.30 1996/09/28 15:54:04 mhitch Exp $ */ 2 3/* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 6 * 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. 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 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: machparam.h 1.11 89/08/14$ 41 * 42 * @(#)param.h 7.8 (Berkeley) 6/28/91 43 */ 44#ifndef _MACHINE_PARAM_H_ 45#define _MACHINE_PARAM_H_ 46 47/* 48 * Machine dependent constants for amiga 49 */ 50#define _MACHINE amiga 51#define MACHINE "amiga" 52#define _MACHINE_ARCH m68k 53#define MACHINE_ARCH "m68k" 54#define MID_MACHINE MID_M68K 55 56/* 57 * Round p (pointer or byte index) up to a correctly-aligned value 58 * for all data types (int, long, ...). The result is u_int and 59 * must be cast to any desired pointer type. 60 */ 61#define ALIGNBYTES (sizeof(int) - 1) 62#define ALIGN(p) (((u_int)(p) + (sizeof(int) - 1)) &~ (sizeof(int) - 1)) 63 64#define NBPG 8192 /* bytes/page */ 65#define PGOFSET (NBPG-1) /* byte offset into page */ 66#define PGSHIFT 13 /* LOG2(NBPG) */ 67#define NPTEPG (NBPG/(sizeof(u_int))) 68 69#define NBSEG ((mmutype == MMU_68040) ? 32*NBPG : 2048*NBPG) /* bytes/segment */ 70#define SEGOFSET (NBSEG-1) /* byte offset into segment */ 71#define SEGSHIFT 24 /* LOG2(NBSEG) [68030 value] */ 72 73#define KERNBASE 0x0 /* start of kernel virtual */ 74#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 75 76#define DEV_BSIZE 512 77#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 78#define BLKDEV_IOSIZE 2048 79#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 80 81#define CLSIZE 1 82#define CLSIZELOG2 0 83 84/* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 85#define SSIZE 1 /* initial stack size/NBPG */ 86#define SINCR 1 /* increment of stack/NBPG */ 87 88#define UPAGES 2 /* pages of u-area */ 89#define USPACE (UPAGES * NBPG) 90 91/* 92 * Constants related to network buffer management. 93 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 94 * on machines that exchange pages of input or output buffers with mbuf 95 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 96 * of the hardware page size. 97 */ 98#define MSIZE 128 /* size of an mbuf */ 99#define MCLSHIFT 11 100#define MCLBYTES (1 << MCLSHIFT) 101#define MCLOFSET (MCLBYTES - 1) 102#ifndef NMBCLUSTERS 103#ifdef GATEWAY 104#define NMBCLUSTERS 512 /* map size, max cluster allocation */ 105#else 106#define NMBCLUSTERS 256 /* map size, max cluster allocation */ 107#endif 108#endif 109 110/* 111 * Size of kernel malloc arena in CLBYTES-sized logical pages 112 */ 113#ifndef NKMEMCLUSTERS 114#define NKMEMCLUSTERS (3072*1024/CLBYTES) 115#endif 116 117/* pages ("clicks") to disk blocks */ 118#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) 119#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) 120 121/* pages to bytes */ 122#define ctob(x) ((x) << PGSHIFT) 123#define btoc(x) (((x) + PGOFSET) >> PGSHIFT) 124 125/* bytes to disk blocks */ 126#define btodb(x) ((x) >> DEV_BSHIFT) 127#define dbtob(x) ((x) << DEV_BSHIFT) 128 129/* 130 * Map a ``block device block'' to a file system block. 131 * This should be device dependent, and should use the bsize 132 * field from the disk label. 133 * For now though just use DEV_BSIZE. 134 */ 135#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 136 137/* 138 * Mach derived conversion macros 139 */ 140#define amiga_round_seg(x) ((((unsigned)(x)) + NBSEG - 1) & ~(NBSEG-1)) 141#define amiga_trunc_seg(x) ((unsigned)(x) & ~(NBSEG-1)) 142#define amiga_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) 143#define amiga_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) 144#define amiga_btop(x) ((unsigned)(x) >> PGSHIFT) 145#define amiga_ptob(x) ((unsigned)(x) << PGSHIFT) 146 147/* 148 * spl functions; all are normally done in-line 149 */ 150#include <machine/psl.h> 151 152#ifdef _KERNEL 153/* 154 * point to the custom.intenar and custom.intenaw respectively. 155 */ 156extern volatile unsigned short *amiga_intena_read, *amiga_intena_write; 157 158#ifndef _LOCORE 159void delay __P((int)); 160void DELAY __P((int)); 161#endif 162#endif 163 164#endif /* !_MACHINE_PARAM_H_ */ 165