1 /* $NetBSD: param.h,v 1.17 1995/02/12 19:19:38 chopps Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: machparam.h 1.11 89/08/14$ 41 * 42 * @(#)param.h 7.8 (Berkeley) 6/28/91 43 */ 44 #ifndef _MACHINE_PARAM_H_ 45 #define _MACHINE_PARAM_H_ 46 47 /* 48 * Machine dependent constants for amiga 49 */ 50 #define MACHINE "amiga" 51 #define MACHINE_ARCH "m68k" 52 #define MID_MACHINE MID_M68K 53 54 /* 55 * Round p (pointer or byte index) up to a correctly-aligned value 56 * for all data types (int, long, ...). The result is u_int and 57 * must be cast to any desired pointer type. 58 */ 59 #define ALIGNBYTES (sizeof(int) - 1) 60 #define ALIGN(p) (((u_int)(p) + (sizeof(int) - 1)) &~ (sizeof(int) - 1)) 61 62 #define NBPG 8192 /* bytes/page */ 63 #define PGOFSET (NBPG-1) /* byte offset into page */ 64 #define PGSHIFT 13 /* LOG2(NBPG) */ 65 #define NPTEPG (NBPG/(sizeof(u_int))) 66 67 #define NBSEG (cpu040 ? 32*NBPG : 2048*NBPG) /* bytes/segment */ 68 #define SEGOFSET (NBSEG-1) /* byte offset into segment */ 69 #define SEGSHIFT (cpu040 ? 18 : 24) /* LOG2(NBSEG) */ 70 71 #define KERNBASE 0x0 /* start of kernel virtual */ 72 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 73 74 #define DEV_BSIZE 512 75 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 76 #define BLKDEV_IOSIZE 2048 77 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 78 79 #define CLSIZE 1 80 #define CLSIZELOG2 0 81 82 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 83 #define SSIZE 1 /* initial stack size/NBPG */ 84 #define SINCR 1 /* increment of stack/NBPG */ 85 86 #define UPAGES 2 /* pages of u-area */ 87 #define USPACE (UPAGES * NBPG) 88 89 /* 90 * Constants related to network buffer management. 91 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 92 * on machines that exchange pages of input or output buffers with mbuf 93 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 94 * of the hardware page size. 95 */ 96 #define MSIZE 128 /* size of an mbuf */ 97 #define MCLBYTES 1024 98 #define MCLSHIFT 10 99 #define MCLOFSET (MCLBYTES - 1) 100 #ifndef NMBCLUSTERS 101 #ifdef GATEWAY 102 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 103 #else 104 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 105 #endif 106 #endif 107 108 /* 109 * Size of kernel malloc arena in CLBYTES-sized logical pages 110 */ 111 #ifndef NKMEMCLUSTERS 112 #define NKMEMCLUSTERS (3072*1024/CLBYTES) 113 #endif 114 115 #define MAXPARTITIONS 16 116 117 /* pages ("clicks") to disk blocks */ 118 #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) 119 #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) 120 #define dtob(x) ((x)<<DEV_BSHIFT) 121 122 /* pages to bytes */ 123 #define ctob(x) ((x)<<PGSHIFT) 124 125 /* bytes to pages */ 126 #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT) 127 128 #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ 129 ((unsigned)(bytes) >> DEV_BSHIFT) 130 #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ 131 ((unsigned)(db) << DEV_BSHIFT) 132 133 /* 134 * Map a ``block device block'' to a file system block. 135 * This should be device dependent, and should use the bsize 136 * field from the disk label. 137 * For now though just use DEV_BSIZE. 138 */ 139 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 140 141 /* 142 * Mach derived conversion macros 143 */ 144 #define amiga_round_seg(x) ((((unsigned)(x)) + NBSEG - 1) & ~(NBSEG-1)) 145 #define amiga_trunc_seg(x) ((unsigned)(x) & ~(NBSEG-1)) 146 #define amiga_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) 147 #define amiga_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) 148 #define amiga_btos(x) ((unsigned)(x) >> SEGSHIFT) 149 #define amiga_stob(x) ((unsigned)(x) << SEGSHIFT) 150 #define amiga_btop(x) ((unsigned)(x) >> PGSHIFT) 151 #define amiga_ptob(x) ((unsigned)(x) << PGSHIFT) 152 153 /* 154 * spl functions; all are normally done in-line 155 */ 156 #include <machine/psl.h> 157 158 /* 159 * point to the custom.intenar and custom.intenaw respectively. 160 */ 161 extern volatile unsigned short *amiga_intena_read, *amiga_intena_write; 162 163 #if 0 164 #define _debug_spl(s) \ 165 ({ \ 166 register int _spl_r; \ 167 \ 168 __asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 169 "&=d" (_spl_r) : "di" (s)); \ 170 if ((_spl_r&PSL_IPL) > ((s)&PSL_IPL)&&((s)&PSL_IPL)!=PSL_IPL1) \ 171 printf ("%s:%d:spl(%d) ==> spl(%d)!!\n",__FILE__,__LINE__, \ 172 ((PSL_IPL&_spl_r)>>8), ((PSL_IPL&(s))>>8)); \ 173 _spl_r; \ 174 }) 175 #else 176 /* 177 * Don't lower IPL below current IPL (unless new IPL is 6) 178 */ 179 #define _debug_spl(s) \ 180 ({ \ 181 register int _spl_r; \ 182 \ 183 __asm __volatile ("clrl %0; movew sr,%0" : \ 184 "&=d" (_spl_r)); \ 185 if ((((s)&PSL_IPL) >= PSL_IPL6) || (_spl_r&PSL_IPL) < ((s)&PSL_IPL) || ((s)&PSL_IPL) <= PSL_IPL1) \ 186 __asm __volatile ("movew %0,sr" : : "di" (s)); \ 187 _spl_r; \ 188 }) 189 #endif 190 191 #define _spl_no_check(s) \ 192 ({ \ 193 register int _spl_r; \ 194 \ 195 __asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 196 "&=d" (_spl_r) : "di" (s)); \ 197 _spl_r; \ 198 }) 199 #if defined (DEBUGXX) /* No workee */ 200 #define _spl _debug_spl 201 #else 202 #define _spl _spl_no_check 203 #endif 204 205 #define spl0() _spl(PSL_S|PSL_IPL0) 206 #define spl1() _spl(PSL_S|PSL_IPL1) 207 #define spl2() _spl(PSL_S|PSL_IPL2) 208 #define spl3() _spl(PSL_S|PSL_IPL3) 209 #define spl4() _spl(PSL_S|PSL_IPL4) 210 #define spl5() _spl(PSL_S|PSL_IPL5) 211 #define spl6() _spl(PSL_S|PSL_IPL6) 212 #define spl7() _spl(PSL_S|PSL_IPL7) 213 214 #define splnone() spl0() 215 #define splsoftclock() spl1() 216 #define splnet() spl1() 217 #define splbio() spl3() 218 #define splimp() spl3() 219 #define spltty() spl4() 220 #ifndef LEV6_DEFER 221 #define splclock() spl6() 222 #define splstatclock() spl6() 223 #define splvm() spl6() 224 #define splhigh() spl7() 225 #define splsched() spl7() 226 #else 227 #define splclock() spl4() 228 #define splstatclock() spl4() 229 #define splvm() spl4() 230 #define splhigh() spl4() 231 #define splsched() spl4() 232 #endif 233 234 #define splx(s) _spl_no_check(s) 235 236 #ifdef KERNEL 237 int cpuspeed; 238 void delay __P((int)); 239 void DELAY __P((int)); 240 #else 241 #define DELAY(n) { register int N = (n); while (--N > 0); } 242 #endif 243 244 #endif /* !_MACHINE_PARAM_H_ */ 245