1 /* 2 * Copyright (c) 1993 Adam Glass 3 * Copyright (c) 1988 University of Utah. 4 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * from: Utah $Hdr: machparam.h 1.11 89/08/14$ 40 * 41 * from: @(#)param.h 7.8 (Berkeley) 6/28/91 42 * param.h,v 1.2 1993/05/22 07:58:25 cgd Exp 43 */ 44 45 /* 46 * Machine dependent constants for HP9000 series 300. 47 */ 48 #define MACHINE "sun3" 49 #define MID_MACHINE MID_M68K 50 /* 51 * Round p (pointer or byte index) up to a correctly-aligned value 52 * for all data types (int, long, ...). The result is u_int and 53 * must be cast to any desired pointer type. 54 */ 55 #define ALIGN(p) (((u_int)(p) + (sizeof(int) - 1)) &~ (sizeof(int) - 1)) 56 57 #define NBPG 8192 /* bytes/page */ 58 #define PGOFSET (NBPG-1) /* byte offset into page */ 59 #define PGSHIFT 13 /* LOG2(NBPG) */ 60 #define SEGSHIFT 17 /* LOG2(NBSG) */ 61 #define SEGMAP_MASK (NSEGMAP-1) 62 #define VA_SEGNUM(x) ((x >> SEGSHIFT) & SEGMAP_MASK) 63 64 #define KERNBASE 0x0E000000 65 66 #define DEV_BSIZE 512 67 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 68 #define BLKDEV_IOSIZE 2048 69 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 70 71 #define CLSIZE 1 72 #define CLSIZELOG2 0 73 74 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 75 #define SSIZE 1 /* initial stack size/NBPG */ 76 #define SINCR 1 /* increment of stack/NBPG */ 77 78 #define UPAGES 3 /* pages of u-area */ 79 80 #define CLOCK_VA (0x0FFE0000+(UPAGES*NBPG*2)) 81 #define INTERREG_VA (0x0FFE0000+(UPAGES*NBPG*2)+NBPG) 82 83 /* 84 * Constants related to network buffer management. 85 * MCLBYTES must be no larger than CLBYTES (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 128 /* size of an mbuf */ 91 #define MCLBYTES 1024 92 #define MCLSHIFT 10 93 #define MCLOFSET (MCLBYTES - 1) 94 #ifndef NMBCLUSTERS 95 #ifdef GATEWAY 96 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 97 #else 98 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 99 #endif 100 #endif 101 102 /* 103 * Size of kernel malloc arena in CLBYTES-sized logical pages 104 */ 105 #ifndef NKMEMCLUSTERS 106 #define NKMEMCLUSTERS (2048*1024/CLBYTES) 107 #endif 108 109 /* pages ("clicks") (4096 bytes) to disk blocks */ 110 #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) 111 #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) 112 #define dtob(x) ((x)<<DEV_BSHIFT) 113 114 /* pages to bytes */ 115 #define ctob(x) ((x)<<PGSHIFT) 116 117 /* bytes to pages */ 118 #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT) 119 120 #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ 121 ((unsigned)(bytes) >> DEV_BSHIFT) 122 #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ 123 ((unsigned)(db) << DEV_BSHIFT) 124 125 /* 126 * Map a ``block device block'' to a file system block. 127 * This should be device dependent, and should use the bsize 128 * field from the disk label. 129 * For now though just use DEV_BSIZE. 130 */ 131 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 132 133 /* 134 * Mach derived conversion macros 135 */ 136 #define sun3_round_seg(x) ((((unsigned)(x)) + NBSG - 1) & ~(NBSG-1)) 137 #define sun3_trunc_seg(x) ((unsigned)(x) & ~(NBSG-1)) 138 #define sun3_round_up_seg(x) (sun3_trunc_seg(x) + NBSG) 139 #define sun3_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) 140 #define sun3_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) 141 #define sun3_round_up_page(x) (sun3_round_page(x) + NBPG) 142 #define sun3_btos(x) ((unsigned)(x) >> SEGSHIFT) 143 #define sun3_stob(x) ((unsigned)(x) << SEGSHIFT) 144 #define sun3_btop(x) ((unsigned)(x) >> PGSHIFT) 145 #define sun3_ptob(x) ((unsigned)(x) << PGSHIFT) 146 147 #include <machine/psl.h> 148 149 /* 150 * spl functions; all but spl0 are done in-line 151 */ 152 153 #ifdef __GNUC__ 154 #define _spl(s) \ 155 ({ \ 156 register int _spl_r; \ 157 \ 158 asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 159 "&=d" (_spl_r) : "di" (s)); \ 160 _spl_r; \ 161 }) 162 #endif 163 /* spl0 requires checking for software interrupts */ 164 #define spl1() _spl(PSL_S|PSL_IPL1) 165 #define spl2() _spl(PSL_S|PSL_IPL2) 166 #define spl3() _spl(PSL_S|PSL_IPL3) 167 #define spl4() _spl(PSL_S|PSL_IPL4) 168 #define spl5() _spl(PSL_S|PSL_IPL5) 169 #define spl6() _spl(PSL_S|PSL_IPL6) 170 #define spl7() _spl(PSL_S|PSL_IPL7) 171 172 #define splsoftclock() spl1() 173 #define splnet() spl3() 174 #define splbio() spl2() 175 #define splimp() spl6() 176 #define spltty() spl6() 177 #define splclock() spl5() 178 #define splstatclock() splclock() 179 #define splvm() spl2() 180 #define splhigh() spl7() 181 #define splsched() spl7() 182 183 #define splnone() spl0() 184 /* watch out for side effects */ 185 #define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) 186 187 #ifdef KERNEL 188 #ifndef LOCORE 189 int cpuspeed; 190 #define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); } 191 #endif 192 193 #else 194 #define DELAY(n) { register int N = (n); while (--N > 0); } 195 #endif 196