1 /* 2 * Copyright (c) 1993 Adam Glass 3 * Copyright (c) 1988 University of Utah. 4 * Copyright (c) 1982, 1986, 1990, 1993 5 * The Regents of the University of California. 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 1.16 92/12/20 40 * from: @(#)param.h 8.1 (Berkeley) 6/10/93 41 * $Id: param.h,v 1.17 1994/09/16 02:41:16 jtc Exp $ 42 */ 43 44 /* 45 * Machine dependent constants for HP9000 series 300. 46 */ 47 #define MACHINE "sun3" 48 #define MACHINE_ARCH "m68k" 49 #define MID_MACHINE MID_M68K 50 51 /* 52 * Round p (pointer or byte index) up to a correctly-aligned value 53 * for all data types (int, long, ...). The result is u_int and 54 * must be cast to any desired pointer type. 55 */ 56 #define ALIGNBYTES 3 57 #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) 58 59 #define NBPG 8192 /* bytes/page */ 60 #define PGOFSET (NBPG-1) /* byte offset into page */ 61 #define PGSHIFT 13 /* LOG2(NBPG) */ 62 63 #define NBSG 0x20000 /* bytes/segment */ 64 #define SEGOFSET (NBSG-1) /* byte offset into segment */ 65 #define SEGSHIFT 17 /* LOG2(NBSG) */ 66 67 #define KERNBASE 0x0E000000 /* start of kernel virtual */ 68 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 69 70 #define DEV_BSIZE 512 71 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 72 #define BLKDEV_IOSIZE 2048 73 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 74 75 #define CLSIZE 1 76 #define CLSIZELOG2 0 77 78 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 79 #define SSIZE 1 /* initial stack size/NBPG */ 80 #define SINCR 1 /* increment of stack/NBPG */ 81 82 #define UPAGES 3 /* pages of u-area */ 83 #define USPACE (UPAGES * NBPG) 84 85 #define CLOCK_VA (0x0FFE0000+(UPAGES*NBPG*2)) 86 #define INTERREG_VA (0x0FFE0000+(UPAGES*NBPG*2)+NBPG) 87 88 /* 89 * Constants related to network buffer management. 90 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 91 * on machines that exchange pages of input or output buffers with mbuf 92 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 93 * of the hardware page size. 94 */ 95 #define MSIZE 128 /* size of an mbuf */ 96 #define MCLBYTES 2048 /* large enough for ether MTU */ 97 #define MCLSHIFT 11 98 #define MCLOFSET (MCLBYTES - 1) 99 #ifndef NMBCLUSTERS 100 #ifdef GATEWAY 101 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 102 #else 103 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 104 #endif 105 #endif 106 107 /* 108 * Size of kernel malloc arena in CLBYTES-sized logical pages 109 */ 110 #ifndef NKMEMCLUSTERS 111 #define NKMEMCLUSTERS (2048*1024/CLBYTES) 112 #endif 113 114 /* pages ("clicks") (4096 bytes) to disk blocks */ 115 #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) 116 #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) 117 #define dtob(x) ((x)<<DEV_BSHIFT) 118 119 /* pages to bytes */ 120 #define ctob(x) ((x)<<PGSHIFT) 121 122 /* bytes to pages */ 123 #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT) 124 125 #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ 126 ((unsigned)(bytes) >> DEV_BSHIFT) 127 #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ 128 ((unsigned)(db) << DEV_BSHIFT) 129 130 /* 131 * Map a ``block device block'' to a file system block. 132 * This should be device dependent, and should use the bsize 133 * field from the disk label. 134 * For now though just use DEV_BSIZE. 135 */ 136 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 137 138 /* 139 * Mach derived conversion macros 140 */ 141 #define sun3_round_seg(x) ((((unsigned)(x)) + NBSG - 1) & ~(NBSG-1)) 142 #define sun3_trunc_seg(x) ((unsigned)(x) & ~(NBSG-1)) 143 #define sun3_round_up_seg(x) (sun3_trunc_seg(x) + NBSG) 144 #define sun3_btos(x) ((unsigned)(x) >> SEGSHIFT) 145 #define sun3_stob(x) ((unsigned)(x) << SEGSHIFT) 146 147 #define sun3_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) 148 #define sun3_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) 149 #define sun3_round_up_page(x) (sun3_round_page(x) + NBPG) 150 #define sun3_btop(x) ((unsigned)(x) >> PGSHIFT) 151 #define sun3_ptob(x) ((unsigned)(x) << PGSHIFT) 152 153 /* 154 * spl functions; all but spl0 are done in-line 155 */ 156 #include <machine/psl.h> 157 158 #ifdef __GNUC__ 159 #define _spl(s) \ 160 ({ \ 161 register int _spl_r; \ 162 \ 163 __asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 164 "&=d" (_spl_r) : "di" (s)); \ 165 _spl_r; \ 166 }) 167 #endif 168 /* spl0 requires checking for software interrupts */ 169 #define spl1() _spl(PSL_S|PSL_IPL1) 170 #define spl2() _spl(PSL_S|PSL_IPL2) 171 #define spl3() _spl(PSL_S|PSL_IPL3) 172 #define spl4() _spl(PSL_S|PSL_IPL4) 173 #define spl5() _spl(PSL_S|PSL_IPL5) 174 #define spl6() _spl(PSL_S|PSL_IPL6) 175 #define spl7() _spl(PSL_S|PSL_IPL7) 176 177 #define splsoftclock() spl1() 178 #define splnet() spl3() 179 #define splbio() spl2() 180 #define splimp() spl3() 181 #define spltty() spl2() 182 #define splzs() spl6() 183 #define splclock() spl5() 184 #define splstatclock() splclock() 185 #define splvm() splimp() 186 #define splhigh() spl7() 187 #define splsched() spl7() 188 189 /* watch out for side effects */ 190 #define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) 191 192 #ifdef KERNEL 193 #ifndef LOCORE 194 #define DELAY(n) delay(n) 195 #endif 196 197 #else 198 #define DELAY(n) { register int N = (n); while (--N > 0); } 199 #endif 200