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 * @(#)param.h 7.8 (Berkeley) 6/28/91 41 * $Id: param.h,v 1.12 1994/06/04 11:59:26 chopps Exp $ 42 */ 43 #ifndef _MACHINE_PARAM_H_ 44 #define _MACHINE_PARAM_H_ 45 46 /* 47 * Machine dependent constants for amiga 48 */ 49 #define MACHINE "amiga" 50 #define MACHINE_ARCH "m68k" 51 #define MID_MACHINE MID_M68K 52 53 /* 54 * Round p (pointer or byte index) up to a correctly-aligned value 55 * for all data types (int, long, ...). The result is u_int and 56 * must be cast to any desired pointer type. 57 */ 58 #define ALIGNBYTES (sizeof(int) - 1) 59 #define ALIGN(p) (((u_int)(p) + (sizeof(int) - 1)) &~ (sizeof(int) - 1)) 60 61 #define NBPG 8192 /* bytes/page */ 62 #define PGOFSET (NBPG-1) /* byte offset into page */ 63 #define PGSHIFT 13 /* LOG2(NBPG) */ 64 #define NPTEPG (NBPG/(sizeof(u_int))) 65 66 #define NBSEG (cpu040 ? 32*NBPG : 2048*NBPG) /* bytes/segment */ 67 #define SEGOFSET (NBSEG-1) /* byte offset into segment */ 68 #define SEGSHIFT (cpu040 ? 18 : 24) /* LOG2(NBSEG) */ 69 70 #define KERNBASE 0x0 /* start of kernel virtual */ 71 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 72 73 #define DEV_BSIZE 512 74 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 75 #define BLKDEV_IOSIZE 2048 76 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 77 78 #define CLSIZE 1 79 #define CLSIZELOG2 0 80 81 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 82 #define SSIZE 1 /* initial stack size/NBPG */ 83 #define SINCR 1 /* increment of stack/NBPG */ 84 85 #define UPAGES 2 /* pages of u-area */ 86 87 /* 88 * Constants related to network buffer management. 89 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 90 * on machines that exchange pages of input or output buffers with mbuf 91 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 92 * of the hardware page size. 93 */ 94 #define MSIZE 128 /* size of an mbuf */ 95 #define MCLBYTES 1024 96 #define MCLSHIFT 10 97 #define MCLOFSET (MCLBYTES - 1) 98 #ifndef NMBCLUSTERS 99 #ifdef GATEWAY 100 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 101 #else 102 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 103 #endif 104 #endif 105 106 /* 107 * Size of kernel malloc arena in CLBYTES-sized logical pages 108 */ 109 #ifndef NKMEMCLUSTERS 110 #define NKMEMCLUSTERS (3072*1024/CLBYTES) 111 #endif 112 113 #define MAXPARTITIONS 16 114 115 /* pages ("clicks") to disk blocks */ 116 #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) 117 #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) 118 #define dtob(x) ((x)<<DEV_BSHIFT) 119 120 /* pages to bytes */ 121 #define ctob(x) ((x)<<PGSHIFT) 122 123 /* bytes to pages */ 124 #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT) 125 126 #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ 127 ((unsigned)(bytes) >> DEV_BSHIFT) 128 #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ 129 ((unsigned)(db) << DEV_BSHIFT) 130 131 /* 132 * Map a ``block device block'' to a file system block. 133 * This should be device dependent, and should use the bsize 134 * field from the disk label. 135 * For now though just use DEV_BSIZE. 136 */ 137 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 138 139 /* 140 * Mach derived conversion macros 141 */ 142 #define amiga_round_seg(x) ((((unsigned)(x)) + NBSEG - 1) & ~(NBSEG-1)) 143 #define amiga_trunc_seg(x) ((unsigned)(x) & ~(NBSEG-1)) 144 #define amiga_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) 145 #define amiga_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) 146 #define amiga_btos(x) ((unsigned)(x) >> SEGSHIFT) 147 #define amiga_stob(x) ((unsigned)(x) << SEGSHIFT) 148 #define amiga_btop(x) ((unsigned)(x) >> PGSHIFT) 149 #define amiga_ptob(x) ((unsigned)(x) << PGSHIFT) 150 151 /* 152 * spl functions; all but spl0 are done in-line 153 */ 154 #include <machine/psl.h> 155 156 #define _debug_spl(s) \ 157 ({ \ 158 register int _spl_r; \ 159 \ 160 asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 161 "&=d" (_spl_r) : "di" (s)); \ 162 if ((_spl_r&PSL_IPL) > (s&PSL_IPL)) \ 163 printf ("%s:%d:spl(%d) ==> spl(%d)!!\n",__FILE__,__LINE__, \ 164 ((PSL_IPL&_spl_r)>>8), ((PSL_IPL&s)>>8)); \ 165 _spl_r; \ 166 }) 167 168 #define _spl_no_check(s) \ 169 ({ \ 170 register int _spl_r; \ 171 \ 172 asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 173 "&=d" (_spl_r) : "di" (s)); \ 174 _spl_r; \ 175 }) 176 #if defined (DEBUG) 177 #define _spl _debug_spl 178 #else 179 #define _spl _spl_no_check 180 #endif 181 182 /* spl0 requires checking for software interrupts */ 183 #define spl1() _spl(PSL_S|PSL_IPL1) 184 #define spl2() _spl(PSL_S|PSL_IPL2) 185 #define spl3() _spl(PSL_S|PSL_IPL3) 186 #define spl4() _spl(PSL_S|PSL_IPL4) 187 #define spl5() _spl(PSL_S|PSL_IPL5) 188 #define spl6() _spl(PSL_S|PSL_IPL6) 189 #define spl7() _spl(PSL_S|PSL_IPL7) 190 191 #define splnone() spl0() 192 #define splsoftclock() spl1() 193 #define splnet() spl1() 194 #define splbio() spl3() 195 #define splimp() spl3() 196 /* 197 * lowered to spl4 to allow for serial input into 198 * private ringbuffer inspite of spltty 199 */ 200 #define spltty() spl4() 201 #define splclock() spl6() 202 #define splstatclock() spl6() 203 #define splvm() spl6() 204 #define splhigh() spl7() 205 #define splsched() spl7() 206 207 #define splx(s) (s & PSL_IPL ? _spl_no_check(s) : spl0()) 208 209 #ifdef KERNEL 210 int cpuspeed; 211 void delay __P((int)); 212 void DELAY __P((int)); 213 #else 214 #define DELAY(n) { register int N = (n); while (--N > 0); } 215 #endif 216 217 #endif /* !_MACHINE_PARAM_H_ */ 218