1 /* 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * the Systems Programming Group of the University of Utah Computer 8 * Science Department. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * from: Utah $Hdr: machparam.h 1.11 89/08/14$ 39 * 40 * from: @(#)param.h 7.8 (Berkeley) 6/28/91 41 * param.h,v 1.2 1993/05/22 07:58:25 cgd Exp 42 */ 43 44 /* 45 * Machine dependent constants for HP9000 series 300. 46 */ 47 #define MACHINE "sun3" 48 #define MID_MACHINE MID_SUN020 49 /* 50 * Round p (pointer or byte index) up to a correctly-aligned value 51 * for all data types (int, long, ...). The result is u_int and 52 * must be cast to any desired pointer type. 53 */ 54 #define ALIGN(p) (((u_int)(p) + (sizeof(int) - 1)) &~ (sizeof(int) - 1)) 55 56 #define NBPG 8192 /* bytes/page */ 57 #define PGOFSET (NBPG-1) /* byte offset into page */ 58 #define PGSHIFT 13 /* LOG2(NBPG) */ 59 60 #define KERNBASE 0x0E000000 61 62 #define DEV_BSIZE 512 63 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 64 #define BLKDEV_IOSIZE 2048 65 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 66 67 #define CLSIZE 1 68 #define CLSIZELOG2 0 69 70 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 71 #define SSIZE 1 /* initial stack size/NBPG */ 72 #define SINCR 1 /* increment of stack/NBPG */ 73 74 #define UPAGES 3 /* pages of u-area */ 75 76 /* 77 * Constants related to network buffer management. 78 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 79 * on machines that exchange pages of input or output buffers with mbuf 80 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 81 * of the hardware page size. 82 */ 83 #define MSIZE 128 /* size of an mbuf */ 84 #define MCLBYTES 1024 85 #define MCLSHIFT 10 86 #define MCLOFSET (MCLBYTES - 1) 87 #ifndef NMBCLUSTERS 88 #ifdef GATEWAY 89 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 90 #else 91 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 92 #endif 93 #endif 94 95 /* 96 * Size of kernel malloc arena in CLBYTES-sized logical pages 97 */ 98 #ifndef NKMEMCLUSTERS 99 #define NKMEMCLUSTERS (2048*1024/CLBYTES) 100 #endif 101 102 /* pages ("clicks") (4096 bytes) to disk blocks */ 103 #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) 104 #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) 105 #define dtob(x) ((x)<<DEV_BSHIFT) 106 107 /* pages to bytes */ 108 #define ctob(x) ((x)<<PGSHIFT) 109 110 /* bytes to pages */ 111 #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT) 112 113 #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ 114 ((unsigned)(bytes) >> DEV_BSHIFT) 115 #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ 116 ((unsigned)(db) << DEV_BSHIFT) 117 118 /* 119 * Map a ``block device block'' to a file system block. 120 * This should be device dependent, and should use the bsize 121 * field from the disk label. 122 * For now though just use DEV_BSIZE. 123 */ 124 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 125 126 #include <machine/psl.h> 127 128 /* 129 * spl functions; all but spl0 are done in-line 130 */ 131 132 #ifdef __GNUC__ 133 #define _spl(s) \ 134 ({ \ 135 register int _spl_r; \ 136 \ 137 asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 138 "&=d" (_spl_r) : "di" (s)); \ 139 _spl_r; \ 140 }) 141 #endif 142 /* spl0 requires checking for software interrupts */ 143 #define spl1() _spl(PSL_S|PSL_IPL1) 144 #define spl2() _spl(PSL_S|PSL_IPL2) 145 #define spl3() _spl(PSL_S|PSL_IPL3) 146 #define spl4() _spl(PSL_S|PSL_IPL4) 147 #define spl5() _spl(PSL_S|PSL_IPL5) 148 #define spl6() _spl(PSL_S|PSL_IPL6) 149 #define spl7() _spl(PSL_S|PSL_IPL7) 150 151 #define splsoftclock() spl1() 152 #define splnet() spl1() 153 #define splbio() spl5() 154 #define splimp() spl5() 155 #define spltty() spl5() 156 #define splclock() spl6() 157 #define splvm() spl6() 158 #define splhigh() spl7() 159 #define splsched() spl7() 160 161 /* watch out for side effects */ 162 #define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) 163 164 #ifdef KERNEL 165 #ifndef LOCORE 166 int cpuspeed; 167 #define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); } 168 #endif 169 170 #else 171 #define DELAY(n) { register int N = (n); while (--N > 0); } 172 #endif 173