1 /* $NetBSD: param.h,v 1.6 2002/05/28 19:09:38 bjh21 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 45 #ifndef _MACHINE_PARAM_H_ 46 #define _MACHINE_PARAM_H_ 47 48 #ifdef _KERNEL 49 #ifndef _LOCORE 50 #include <machine/cpu.h> 51 #endif /* _LOCORE */ 52 #endif 53 54 /* 55 * Machine dependent constants for Amiga PowerPC (32-bit only currently) 56 */ 57 #define MACHINE "amigappc" 58 #define MACHINE_ARCH "powerpc" 59 #define MID_MACHINE MID_POWERPC 60 61 #define ALIGNBYTES (sizeof(double) - 1) 62 #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) & ~ALIGNBYTES) 63 #define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0) 64 65 #define PGSHIFT 12 66 #define NBPG (1 << PGSHIFT) /* Page size */ 67 #define PGOFSET (NBPG - 1) 68 69 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 70 #define DEV_BSIZE (1 << DEV_BSHIFT) 71 #define BLKDEV_IOSIZE NBPG 72 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 73 74 #define UPAGES 4 75 #define USPACE (UPAGES * NBPG) 76 77 #ifndef MSGBUFSIZE 78 #define MSGBUFSIZE NBPG /* default message buffer size */ 79 #endif 80 81 #define KERNBASE 0x00000000 /* start of kernel virtual */ 82 83 /* 84 * Constants related to network buffer management. 85 * MCLBYTES must be no larger than NBPG (the software page size), and, 86 * on machines that exchange pages of input or output buffers with mbuf 87 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 88 * of the hardware page size. 89 */ 90 #define MSIZE 256 /* size of an mbuf */ 91 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 92 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 93 94 #ifndef NMBCLUSTERS 95 96 #if defined(_KERNEL_OPT) 97 #include "opt_gateway.h" 98 #endif 99 100 #ifdef GATEWAY 101 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 102 #else 103 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 104 #endif 105 #endif 106 107 /* 108 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized 109 * logical pages. 110 */ 111 #define NKMEMPAGES_MIN_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT) 112 #define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT) 113 114 /* 115 * pages ("clicks") to disk blocks 116 */ 117 #define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) 118 #define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) 119 /* 120 * bytes to pages 121 */ 122 #define ctob(x) ((x) << PGSHIFT) 123 #define btoc(x) (((x) + PGOFSET) >> PGSHIFT) 124 125 /* 126 * bytes to disk blocks 127 */ 128 #define dbtob(x) ((x) << DEV_BSHIFT) 129 #define btodb(x) ((x) >> DEV_BSHIFT) 130 131 /* 132 * Segment handling stuff 133 */ 134 #define SEGMENT_LENGTH 0x10000000 135 #define SEGMENT_MASK 0xf0000000 136 137 /* 138 * Fixed segments 139 */ 140 #define USER_SR 13 141 #define KERNEL_SR 14 142 #define KERNEL_SEGMENT (0xf0000 + KERNEL_SR) 143 #define EMPTY_SEGMENT 0xfffff0 144 #define USER_ADDR ((void *)(USER_SR << ADDR_SR_SHFT)) 145 146 /* 147 * Some system constants 148 */ 149 #ifndef NPMAPS 150 #define NPMAPS 32768 /* Number of pmaps in system */ 151 #endif 152 153 #ifdef _KERNEL 154 /* 155 * point to the custom.intenar and custom.intenaw respectively. 156 extern volatile unsigned short *amiga_intena_read, *amiga_intena_write; 157 */ 158 159 /* ADAM: redefiniton of cpu.h */ 160 #if 0 161 #ifndef _LOCORE 162 void delay __P((int)); 163 void DELAY __P((int)); 164 #endif /* !_LOCORE */ 165 #endif /* 0 */ 166 #endif /* _KERNEL */ 167 168 #endif /* def _MACHINE_PARAM_H_ */ 169