1 /* $NetBSD: param3x.h,v 1.4 1997/02/27 18:12:40 gwr Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1986, 1990, 1993 6 * The Regents of the University of California. 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 1.16 92/12/20 41 * from: @(#)param.h 8.1 (Berkeley) 6/10/93 42 */ 43 44 #ifndef MACHINE 45 46 /* 47 * Machine dependent constants for the Sun3x series. 48 */ 49 #define _MACHINE sun3x 50 #define MACHINE "sun3x" 51 #define _MACHINE_ARCH m68k 52 #define MACHINE_ARCH "m68k" 53 #define MID_MACHINE MID_M68K 54 55 /* 56 * Round p (pointer or byte index) up to a correctly-aligned value 57 * for all data types (int, long, ...). The result is u_int and 58 * must be cast to any desired pointer type. 59 * 60 * ALIGNED_POINTER is a boolean macro that checks whether an address 61 * is valid to fetch data elements of type t from on this architecture. 62 * This does not reflect the optimal alignment, just the possibility 63 * (within reasonable limits). 64 * 65 */ 66 #define ALIGNBYTES 3 67 #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) 68 #define ALIGNED_POINTER(p,t) ((((u_long)(p)) & ALIGNBYTES) == 0) 69 70 #define NBPG 8192 /* bytes/page */ 71 #define PGOFSET (NBPG-1) /* byte offset into page */ 72 #define PGSHIFT 13 /* LOG2(NBPG) */ 73 74 #define NBSG 0x80000 /* bytes/segment */ 75 #define SEGOFSET (NBSG-1) /* byte offset into segment */ 76 #define SEGSHIFT 19 /* LOG2(NBSG) */ 77 78 #define KERNBASE 0xF8000000 /* start of kernel virtual */ 79 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 80 #define KERNTEXTOFF 0xF8004000 /* start of kernel text */ 81 #define KERN_END 0xFE000000 /* end of kernel virtual */ 82 83 #define DEV_BSIZE 512 84 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 85 #define BLKDEV_IOSIZE 2048 86 #define MAXPHYS 0x10000 /* max raw I/O transfer size */ 87 #define MAXBSIZE 0x8000 /* max FS block size - XXX */ 88 89 #define CLSIZE 1 90 #define CLSIZELOG2 0 91 92 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 93 #define SSIZE 1 /* initial stack size/NBPG */ 94 #define SINCR 1 /* increment of stack/NBPG */ 95 96 #define UPAGES 2 /* pages of u-area */ 97 #define USPACE (UPAGES << PGSHIFT) 98 99 /* 100 * Constants related to network buffer management. 101 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 102 * on machines that exchange pages of input or output buffers with mbuf 103 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 104 * of the hardware page size. 105 */ 106 #define MSIZE 128 /* size of an mbuf */ 107 108 #ifndef MCLSHIFT 109 # define MCLSHIFT 11 /* Makes MCLBYTES == 2048 */ 110 #endif /* MCLSHIFT */ 111 112 #define MCLBYTES (1 << MCLSHIFT) 113 #define MCLOFSET (MCLBYTES - 1) 114 115 #ifndef NMBCLUSTERS 116 #ifdef GATEWAY 117 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 118 #else 119 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 120 #endif 121 #endif 122 123 /* 124 * Size of kernel malloc arena in CLBYTES-sized logical pages 125 */ 126 #ifndef NKMEMCLUSTERS 127 #define NKMEMCLUSTERS (2048*1024/CLBYTES) 128 #endif 129 130 /* pages ("clicks") to disk blocks */ 131 #define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) 132 #define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) 133 134 /* pages to bytes */ 135 #define ctob(x) ((x) << PGSHIFT) 136 #define btoc(x) (((x) + PGOFSET) >> PGSHIFT) 137 138 /* bytes to disk blocks */ 139 #define btodb(x) ((x) >> DEV_BSHIFT) 140 #define dbtob(x) ((x) << DEV_BSHIFT) 141 142 /* 143 * Map a ``block device block'' to a file system block. 144 * This should be device dependent, and should use the bsize 145 * field from the disk label. 146 * For now though just use DEV_BSIZE. 147 */ 148 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 149 150 /* XXX - Does this really belong here? -gwr */ 151 #include <machine/psl.h> 152 153 #if defined(_KERNEL) && !defined(_LOCORE) 154 extern void _delay __P((unsigned)); 155 #define delay(us) _delay((us)<<8) 156 #define DELAY(n) delay(n) 157 #endif /* _KERNEL && !_LOCORE */ 158 159 #endif /* MACHINE */ 160