param.h revision 1.27
1/* $NetBSD: param.h,v 1.27 1996/03/01 23:30:08 cgd 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_ARCH "m68k" 52#define MID_MACHINE MID_M68K 53 54/* 55 * Round p (pointer or byte index) up to a correctly-aligned value 56 * for all data types (int, long, ...). The result is u_int and 57 * must be cast to any desired pointer type. 58 */ 59#define ALIGNBYTES (sizeof(int) - 1) 60#define ALIGN(p) (((u_int)(p) + (sizeof(int) - 1)) &~ (sizeof(int) - 1)) 61 62#define NBPG 8192 /* bytes/page */ 63#define PGOFSET (NBPG-1) /* byte offset into page */ 64#define PGSHIFT 13 /* LOG2(NBPG) */ 65#define NPTEPG (NBPG/(sizeof(u_int))) 66 67#define NBSEG ((mmutype == MMU_68040) ? 32*NBPG : 2048*NBPG) /* bytes/segment */ 68#define SEGOFSET (NBSEG-1) /* byte offset into segment */ 69#define SEGSHIFT 24 /* LOG2(NBSEG) [68030 value] */ 70 71#define KERNBASE 0x0 /* start of kernel virtual */ 72#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 73 74#define DEV_BSIZE 512 75#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 76#define BLKDEV_IOSIZE 2048 77#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 78 79#define CLSIZE 1 80#define CLSIZELOG2 0 81 82/* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 83#define SSIZE 1 /* initial stack size/NBPG */ 84#define SINCR 1 /* increment of stack/NBPG */ 85 86#define UPAGES 2 /* pages of u-area */ 87#define USPACE (UPAGES * NBPG) 88 89/* 90 * Constants related to network buffer management. 91 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 92 * on machines that exchange pages of input or output buffers with mbuf 93 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 94 * of the hardware page size. 95 */ 96#define MSIZE 128 /* size of an mbuf */ 97#define MCLBYTES 1024 98#define MCLSHIFT 10 99#define MCLOFSET (MCLBYTES - 1) 100#ifndef NMBCLUSTERS 101#ifdef GATEWAY 102#define NMBCLUSTERS 512 /* map size, max cluster allocation */ 103#else 104#define NMBCLUSTERS 256 /* map size, max cluster allocation */ 105#endif 106#endif 107 108/* 109 * Size of kernel malloc arena in CLBYTES-sized logical pages 110 */ 111#ifndef NKMEMCLUSTERS 112#define NKMEMCLUSTERS (3072*1024/CLBYTES) 113#endif 114 115/* pages ("clicks") to disk blocks */ 116#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) 117#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) 118 119/* pages to bytes */ 120#define ctob(x) ((x) << PGSHIFT) 121#define btoc(x) (((x) + PGOFSET) >> PGSHIFT) 122 123/* bytes to disk blocks */ 124#define btodb(x) ((x) >> DEV_BSHIFT) 125#define dbtob(x) ((x) << DEV_BSHIFT) 126 127/* 128 * Map a ``block device block'' to a file system block. 129 * This should be device dependent, and should use the bsize 130 * field from the disk label. 131 * For now though just use DEV_BSIZE. 132 */ 133#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 134 135/* 136 * Mach derived conversion macros 137 */ 138#define amiga_round_seg(x) ((((unsigned)(x)) + NBSEG - 1) & ~(NBSEG-1)) 139#define amiga_trunc_seg(x) ((unsigned)(x) & ~(NBSEG-1)) 140#define amiga_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) 141#define amiga_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) 142#define amiga_btop(x) ((unsigned)(x) >> PGSHIFT) 143#define amiga_ptob(x) ((unsigned)(x) << PGSHIFT) 144 145/* 146 * spl functions; all are normally done in-line 147 */ 148#include <machine/psl.h> 149 150/* 151 * point to the custom.intenar and custom.intenaw respectively. 152 */ 153extern volatile unsigned short *amiga_intena_read, *amiga_intena_write; 154 155#if 0 156#define _debug_spl(s) \ 157({ \ 158 register int _spl_r; \ 159\ 160 __asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 161 "&=d" (_spl_r) : "di" (s)); \ 162 if ((_spl_r&PSL_IPL) > ((s)&PSL_IPL)&&((s)&PSL_IPL)!=PSL_IPL1) \ 163 printf ("%s:%d:spl(%d) ==> spl(%d)!!\n",__FILE__,__LINE__, \ 164 ((PSL_IPL&_spl_r)>>8), ((PSL_IPL&(s))>>8)); \ 165 _spl_r; \ 166}) 167#else 168/* 169 * Don't lower IPL below current IPL (unless new IPL is 6) 170 */ 171#define _debug_spl(s) \ 172({ \ 173 register int _spl_r; \ 174\ 175 __asm __volatile ("clrl %0; movew sr,%0" : \ 176 "&=d" (_spl_r)); \ 177 if ((((s)&PSL_IPL) >= PSL_IPL6) || (_spl_r&PSL_IPL) < ((s)&PSL_IPL) || ((s)&PSL_IPL) <= PSL_IPL1) \ 178 __asm __volatile ("movew %0,sr" : : "di" (s)); \ 179 _spl_r; \ 180}) 181#endif 182 183#define _spl_no_check(s) \ 184({ \ 185 register int _spl_r; \ 186\ 187 __asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 188 "&=d" (_spl_r) : "di" (s)); \ 189 _spl_r; \ 190}) 191#if defined (DEBUGXX) /* No workee */ 192#define _spl _debug_spl 193#else 194#define _spl _spl_no_check 195#endif 196 197#define spl0() _spl(PSL_S|PSL_IPL0) 198#define spl1() _spl(PSL_S|PSL_IPL1) 199#define spl2() _spl(PSL_S|PSL_IPL2) 200#define spl3() _spl(PSL_S|PSL_IPL3) 201#define spl4() _spl(PSL_S|PSL_IPL4) 202#define spl5() _spl(PSL_S|PSL_IPL5) 203#define spl6() _spl(PSL_S|PSL_IPL6) 204#define spl7() _spl(PSL_S|PSL_IPL7) 205 206#define splnone() spl0() 207#define splsoftclock() spl1() 208#define splsoftnet() spl1() 209#define splbio() spl3() 210#define splnet() spl3() 211#define spltty() spl4() 212#define splimp() spl4() 213#ifndef LEV6_DEFER 214#define splclock() spl6() 215#define splstatclock() spl6() 216#define splvm() spl6() 217#define splhigh() spl7() 218#define splsched() spl7() 219#else 220#define splclock() spl4() 221#define splstatclock() spl4() 222#define splvm() spl4() 223#define splhigh() spl4() 224#define splsched() spl4() 225#endif 226 227#define splx(s) _spl_no_check(s) 228 229#ifdef _KERNEL 230void delay __P((int)); 231void DELAY __P((int)); 232#endif 233 234#endif /* !_MACHINE_PARAM_H_ */ 235