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 #define SEGSHIFT 17 /* LOG2(NBSG) */ 60 #define SEGMAP_MASK (NSEGMAP-1) 61 #define VA_SEGNUM(x) ((x >> SEGSHIFT) & SEGMAP_MASK) 62 63 #define KERNBASE 0x0E000000 64 65 #define DEV_BSIZE 512 66 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 67 #define BLKDEV_IOSIZE 2048 68 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 69 70 #define CLSIZE 1 71 #define CLSIZELOG2 0 72 73 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 74 #define SSIZE 1 /* initial stack size/NBPG */ 75 #define SINCR 1 /* increment of stack/NBPG */ 76 77 #define UPAGES 3 /* pages of u-area */ 78 79 /* 80 * Constants related to network buffer management. 81 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 82 * on machines that exchange pages of input or output buffers with mbuf 83 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 84 * of the hardware page size. 85 */ 86 #define MSIZE 128 /* size of an mbuf */ 87 #define MCLBYTES 1024 88 #define MCLSHIFT 10 89 #define MCLOFSET (MCLBYTES - 1) 90 #ifndef NMBCLUSTERS 91 #ifdef GATEWAY 92 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 93 #else 94 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 95 #endif 96 #endif 97 98 /* 99 * Size of kernel malloc arena in CLBYTES-sized logical pages 100 */ 101 #ifndef NKMEMCLUSTERS 102 #define NKMEMCLUSTERS (2048*1024/CLBYTES) 103 #endif 104 105 /* pages ("clicks") (4096 bytes) to disk blocks */ 106 #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) 107 #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) 108 #define dtob(x) ((x)<<DEV_BSHIFT) 109 110 /* pages to bytes */ 111 #define ctob(x) ((x)<<PGSHIFT) 112 113 /* bytes to pages */ 114 #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT) 115 116 #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ 117 ((unsigned)(bytes) >> DEV_BSHIFT) 118 #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ 119 ((unsigned)(db) << DEV_BSHIFT) 120 121 /* 122 * Map a ``block device block'' to a file system block. 123 * This should be device dependent, and should use the bsize 124 * field from the disk label. 125 * For now though just use DEV_BSIZE. 126 */ 127 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 128 129 /* 130 * Mach derived conversion macros 131 */ 132 #define sun3_round_seg(x) ((((unsigned)(x)) + NBSG - 1) & ~(NBSG-1)) 133 #define sun3_trunc_seg(x) ((unsigned)(x) & ~(NBSG-1)) 134 #define sun3_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) 135 #define sun3_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) 136 #define sun3_btos(x) ((unsigned)(x) >> SEGSHIFT) 137 #define sun3_stob(x) ((unsigned)(x) << SEGSHIFT) 138 #define sun3_btop(x) ((unsigned)(x) >> PGSHIFT) 139 #define sun3_ptob(x) ((unsigned)(x) << PGSHIFT) 140 #include <machine/psl.h> 141 142 /* 143 * spl functions; all but spl0 are done in-line 144 */ 145 146 #ifdef __GNUC__ 147 #define _spl(s) \ 148 ({ \ 149 register int _spl_r; \ 150 \ 151 asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 152 "&=d" (_spl_r) : "di" (s)); \ 153 _spl_r; \ 154 }) 155 #endif 156 /* spl0 requires checking for software interrupts */ 157 #define spl1() _spl(PSL_S|PSL_IPL1) 158 #define spl2() _spl(PSL_S|PSL_IPL2) 159 #define spl3() _spl(PSL_S|PSL_IPL3) 160 #define spl4() _spl(PSL_S|PSL_IPL4) 161 #define spl5() _spl(PSL_S|PSL_IPL5) 162 #define spl6() _spl(PSL_S|PSL_IPL6) 163 #define spl7() _spl(PSL_S|PSL_IPL7) 164 165 #define splsoftclock() spl1() 166 #define splnet() spl1() 167 #define splbio() spl5() 168 #define splimp() spl5() 169 #define spltty() spl5() 170 #define splclock() spl6() 171 #define splvm() spl6() 172 #define splhigh() spl7() 173 #define splsched() spl7() 174 175 /* watch out for side effects */ 176 #define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) 177 178 #ifdef KERNEL 179 #ifndef LOCORE 180 int cpuspeed; 181 #define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); } 182 #endif 183 184 #else 185 #define DELAY(n) { register int N = (n); while (--N > 0); } 186 #endif 187