1 /* $NetBSD: param.h,v 1.29 1997/04/13 05:12:42 scottr Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 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 /*- 41 * Copyright (C) 1993 Allen K. Briggs, Chris P. Caputo, 42 * Michael L. Finch, Bradley A. Grantham, and 43 * Lawrence A. Kesteloot 44 * All rights reserved. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the Alice Group. 57 * 4. The names of the Alice Group or any of its members may not be used 58 * to endorse or promote products derived from this software without 59 * specific prior written permission. 60 * 61 * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR 62 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 63 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 64 * IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT, 65 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 66 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 67 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 68 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 69 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 70 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 71 * 72 */ 73 /* 74 * from: Utah $Hdr: machparam.h 1.11 89/08/14$ 75 * 76 * @(#)param.h 7.8 (Berkeley) 6/28/91 77 */ 78 79 #ifndef _PARAM_MACHINE_ 80 #define _PARAM_MACHINE_ 81 82 /* 83 * Machine dependent constants for Macintosh II-and-similar series. 84 */ 85 #define _MACHINE mac68k 86 #define MACHINE "mac68k" 87 #define _MACHINE_ARCH m68k 88 #define MACHINE_ARCH "m68k" 89 #define MID_MACHINE MID_M68K 90 91 /* 92 * Get interrupt glue. 93 */ 94 #include <machine/intr.h> 95 96 /* 97 * Round p (pointer or byte index) up to a correctly-aligned value 98 * for all data types (int, long, ...). The result is u_int and 99 * must be cast to any desired pointer type. 100 * 101 * ALIGNED_POINTER is a boolean macro that checks whether an address 102 * is valid to fetch data elements of type t from on this architecture. 103 * This does not reflect the optimal alignment, just the possibility 104 * (within reasonable limits). 105 * 106 */ 107 #define ALIGNBYTES (sizeof(int) - 1) 108 #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) 109 #define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0) 110 111 #define PGSHIFT 12 /* LOG2(NBPG) */ 112 #define NBPG (1 << PGSHIFT) /* bytes/page */ 113 #define PGOFSET (NBPG-1) /* byte offset into page */ 114 #define NPTEPG (NBPG/(sizeof (pt_entry_t))) 115 116 #define SEGSHIFT 22 /* LOG2(NBSEG) */ 117 #define NBSEG (1 << SEGSHIFT) /* bytes/segment */ 118 #define SEGOFSET (NBSEG-1) /* byte offset into segment */ 119 120 #define KERNBASE 0x00000000 /* start of kernel virtual */ 121 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 122 123 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 124 #define DEV_BSIZE (1 << DEV_BSHIFT) 125 #define BLKDEV_IOSIZE 2048 126 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 127 128 #define CLSIZELOG2 0 129 #define CLSIZE (1 << CLSIZELOG2) 130 131 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 132 #define SSIZE 1 /* initial stack size/NBPG */ 133 #define SINCR 1 /* increment of stack/NBPG */ 134 #define UPAGES 3 /* pages of u-area */ 135 #define USPACE (UPAGES * NBPG) /* total size of u-area */ 136 137 /* 138 * Constants related to network buffer management. 139 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 140 * on machines that exchange pages of input or output buffers with mbuf 141 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 142 * of the hardware page size. 143 */ 144 #define MSIZE 128 /* size of an mbuf */ 145 #ifndef MCLSHIFT 146 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 147 #endif /* MCLSHIFT */ 148 #define MCLBYTES (1 << MCLSHIFT) /* size of an m_buf cluster */ 149 #define MCLOFSET (MCLBYTES - 1) /* offset within an m_buf cluster */ 150 151 #ifndef NMBCLUSTERS 152 #ifdef GATEWAY 153 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 154 #else 155 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 156 #endif 157 #endif 158 159 /* 160 * Size of kernel malloc arena in CLBYTES-sized logical pages 161 */ 162 #ifndef NKMEMCLUSTERS 163 #define NKMEMCLUSTERS (2048 * 1024 / CLBYTES) 164 #endif 165 166 /* pages ("clicks") to disk blocks */ 167 #define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) 168 #define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) 169 170 /* pages to bytes */ 171 #define ctob(x) ((x) << PGSHIFT) 172 #define btoc(x) (((x) + PGOFSET) >> PGSHIFT) 173 174 /* bytes to disk blocks */ 175 #define btodb(x) ((x) >> DEV_BSHIFT) 176 #define dbtob(x) ((x) << DEV_BSHIFT) 177 178 /* 179 * Map a ``block device block'' to a file system block. 180 * This should be device dependent, and should use the bsize 181 * field from the disk label. 182 * For now though just use DEV_BSIZE. 183 */ 184 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE / DEV_BSIZE)) 185 186 /* 187 * Mach derived conversion macros 188 */ 189 #define mac68k_round_page(x) ((((unsigned)(x)) + PGOFSET) & ~PGOFSET) 190 #define mac68k_trunc_page(x) ((unsigned)(x) & ~PGOFSET) 191 #define mac68k_btop(x) ((unsigned)(x) >> PGSHIFT) 192 #define mac68k_ptob(x) ((unsigned)(x) << PGSHIFT) 193 194 #include <machine/psl.h> 195 196 #if defined(_KERNEL) && !defined(_LOCORE) 197 void delay __P((unsigned)); 198 #define DELAY(ms) delay(ms) 199 #endif /* _KERNEL && !_LOCORE */ 200 201 #endif /* _PARAM_MACHINE_ */ 202