param.h revision 1.2.2.2
1 1.2.2.2 ragge /*- 2 1.2.2.2 ragge * Copyright (c) 1990 The Regents of the University of California. 3 1.2.2.2 ragge * All rights reserved. 4 1.2.2.2 ragge * 5 1.2.2.2 ragge * Modified for VAX 940213/Ragge 6 1.2.2.2 ragge * 7 1.2.2.2 ragge * This code is derived from software contributed to Berkeley by 8 1.2.2.2 ragge * William Jolitz. 9 1.2.2.2 ragge * 10 1.2.2.2 ragge * Redistribution and use in source and binary forms, with or without 11 1.2.2.2 ragge * modification, are permitted provided that the following conditions 12 1.2.2.2 ragge * are met: 13 1.2.2.2 ragge * 1. Redistributions of source code must retain the above copyright 14 1.2.2.2 ragge * notice, this list of conditions and the following disclaimer. 15 1.2.2.2 ragge * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.2.2 ragge * notice, this list of conditions and the following disclaimer in the 17 1.2.2.2 ragge * documentation and/or other materials provided with the distribution. 18 1.2.2.2 ragge * 3. All advertising materials mentioning features or use of this software 19 1.2.2.2 ragge * must display the following acknowledgement: 20 1.2.2.2 ragge * This product includes software developed by the University of 21 1.2.2.2 ragge * California, Berkeley and its contributors. 22 1.2.2.2 ragge * 4. Neither the name of the University nor the names of its contributors 23 1.2.2.2 ragge * may be used to endorse or promote products derived from this software 24 1.2.2.2 ragge * without specific prior written permission. 25 1.2.2.2 ragge * 26 1.2.2.2 ragge * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 1.2.2.2 ragge * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 1.2.2.2 ragge * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 1.2.2.2 ragge * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 1.2.2.2 ragge * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 1.2.2.2 ragge * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 1.2.2.2 ragge * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 1.2.2.2 ragge * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 1.2.2.2 ragge * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 1.2.2.2 ragge * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 1.2.2.2 ragge * SUCH DAMAGE. 37 1.2.2.2 ragge * 38 1.2.2.2 ragge * from: @(#)param.h 5.8 (Berkeley) 6/28/91 39 1.2.2.2 ragge * $Id: param.h,v 1.2.2.2 1994/08/16 23:41:55 ragge Exp $ 40 1.2.2.2 ragge */ 41 1.2.2.2 ragge 42 1.2.2.2 ragge #ifndef PARAM_H 43 1.2.2.2 ragge #define PARAM_H 44 1.2.2.2 ragge 45 1.2.2.2 ragge #include "psl.h" 46 1.2.2.2 ragge 47 1.2.2.2 ragge /* 48 1.2.2.2 ragge * Machine dependent constants for VAX. 49 1.2.2.2 ragge */ 50 1.2.2.2 ragge 51 1.2.2.2 ragge #define MACHINE "vax" 52 1.2.2.2 ragge #define MID_MACHINE MID_VAX 53 1.2.2.2 ragge #define UNIX "vmunix" 54 1.2.2.2 ragge 55 1.2.2.2 ragge /* 56 1.2.2.2 ragge * Round p (pointer or byte index) up to a correctly-aligned value 57 1.2.2.2 ragge * for all data types (int, long, ...). The result is u_int and 58 1.2.2.2 ragge * must be cast to any desired pointer type. 59 1.2.2.2 ragge */ 60 1.2.2.2 ragge 61 1.2.2.2 ragge #define ALIGNBYTES (sizeof(int) - 1) 62 1.2.2.2 ragge #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) 63 1.2.2.2 ragge 64 1.2.2.2 ragge #define PGSHIFT 9 /* LOG2(NBPG) */ 65 1.2.2.2 ragge #define NBPG (1<<PGSHIFT) /* (1 << PGSHIFT) bytes/page */ 66 1.2.2.2 ragge #define PGOFSET (NBPG-1) /* byte offset into page */ 67 1.2.2.2 ragge #define NPTEPG (NBPG/(sizeof (struct pte))) 68 1.2.2.2 ragge 69 1.2.2.2 ragge #define KERNBASE 0x80000000 /* start of kernel virtual */ 70 1.2.2.2 ragge #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 71 1.2.2.2 ragge 72 1.2.2.2 ragge #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 73 1.2.2.2 ragge #define DEV_BSIZE (1 << DEV_BSHIFT) 74 1.2.2.2 ragge 75 1.2.2.2 ragge #define BLKDEV_IOSIZE 2048 76 1.2.2.2 ragge #define MAXPHYS (63 * 1024) /* max raw I/O transfer size */ 77 1.2.2.2 ragge 78 1.2.2.2 ragge #define CLSIZELOG2 1 79 1.2.2.2 ragge #define CLSIZE 2 80 1.2.2.2 ragge 81 1.2.2.2 ragge /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 82 1.2.2.2 ragge #define SSIZE 4 /* initial stack size/NBPG */ 83 1.2.2.2 ragge #define SINCR 4 /* increment of stack/NBPG */ 84 1.2.2.2 ragge 85 1.2.2.2 ragge #define UPAGES 16 /* pages of u-area */ 86 1.2.2.2 ragge 87 1.2.2.2 ragge /* 88 1.2.2.2 ragge * Constants related to network buffer management. 89 1.2.2.2 ragge * MCLBYTES must be no larger than CLBYTES (the software page size), and, 90 1.2.2.2 ragge * on machines that exchange pages of input or output buffers with mbuf 91 1.2.2.2 ragge * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 92 1.2.2.2 ragge * of the hardware page size. 93 1.2.2.2 ragge */ 94 1.2.2.2 ragge 95 1.2.2.2 ragge #ifndef MSIZE 96 1.2.2.2 ragge #define MSIZE 128 /* size of an mbuf */ 97 1.2.2.2 ragge #endif /* MSIZE */ 98 1.2.2.2 ragge 99 1.2.2.2 ragge #ifndef MCLSHIFT 100 1.2.2.2 ragge #define MCLSHIFT 10 /* convert bytes to m_buf clusters */ 101 1.2.2.2 ragge #endif /* MCLSHIFT */ 102 1.2.2.2 ragge #define MCLBYTES (1 << MCLSHIFT) /* size of an m_buf cluster */ 103 1.2.2.2 ragge #define MCLOFSET (MCLBYTES - 1) /* offset within an m_buf cluster */ 104 1.2.2.2 ragge 105 1.2.2.2 ragge #ifndef NMBCLUSTERS 106 1.2.2.2 ragge #ifdef GATEWAY 107 1.2.2.2 ragge #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 108 1.2.2.2 ragge #else 109 1.2.2.2 ragge #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 110 1.2.2.2 ragge #endif /* GATEWAY */ 111 1.2.2.2 ragge #endif /* NMBCLUSTERS */ 112 1.2.2.2 ragge 113 1.2.2.2 ragge /* 114 1.2.2.2 ragge * Size of kernel malloc arena in CLBYTES-sized logical pages 115 1.2.2.2 ragge */ 116 1.2.2.2 ragge 117 1.2.2.2 ragge #ifndef NKMEMCLUSTERS 118 1.2.2.2 ragge #define NKMEMCLUSTERS (512*1024/CLBYTES) 119 1.2.2.2 ragge #endif 120 1.2.2.2 ragge 121 1.2.2.2 ragge /* 122 1.2.2.2 ragge * Some macros for units conversion 123 1.2.2.2 ragge */ 124 1.2.2.2 ragge 125 1.2.2.2 ragge /* Core clicks (512 bytes) to segments and vice versa */ 126 1.2.2.2 ragge 127 1.2.2.2 ragge #define ctos(x) (x) 128 1.2.2.2 ragge #define stoc(x) (x) 129 1.2.2.2 ragge 130 1.2.2.2 ragge /* Core clicks (512 bytes) to disk blocks */ 131 1.2.2.2 ragge 132 1.2.2.2 ragge #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) 133 1.2.2.2 ragge #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) 134 1.2.2.2 ragge #define dtob(x) ((x)<<DEV_BSHIFT) 135 1.2.2.2 ragge 136 1.2.2.2 ragge /* clicks to bytes */ 137 1.2.2.2 ragge 138 1.2.2.2 ragge #define ctob(x) ((x)<<PGSHIFT) 139 1.2.2.2 ragge 140 1.2.2.2 ragge /* bytes to clicks */ 141 1.2.2.2 ragge 142 1.2.2.2 ragge #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT) 143 1.2.2.2 ragge 144 1.2.2.2 ragge #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ 145 1.2.2.2 ragge ((unsigned)(bytes) >> DEV_BSHIFT) 146 1.2.2.2 ragge #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ 147 1.2.2.2 ragge ((unsigned)(db) << DEV_BSHIFT) 148 1.2.2.2 ragge 149 1.2.2.2 ragge /* 150 1.2.2.2 ragge * Map a ``block device block'' to a file system block. 151 1.2.2.2 ragge * This should be device dependent, and will be if we 152 1.2.2.2 ragge * add an entry to cdevsw/bdevsw for that purpose. 153 1.2.2.2 ragge * For now though just use DEV_BSIZE. 154 1.2.2.2 ragge */ 155 1.2.2.2 ragge 156 1.2.2.2 ragge #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 157 1.2.2.2 ragge 158 1.2.2.2 ragge /* 159 1.2.2.2 ragge * Mach derived conversion macros 160 1.2.2.2 ragge */ 161 1.2.2.2 ragge 162 1.2.2.2 ragge #define vax_round_pdr(x) ((((unsigned)(x)) + NBPDR - 1) & ~(NBPDR-1)) 163 1.2.2.2 ragge #define vax_trunc_pdr(x) ((unsigned)(x) & ~(NBPDR-1)) 164 1.2.2.2 ragge #define vax_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) 165 1.2.2.2 ragge #define vax_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) 166 1.2.2.2 ragge #define vax_btod(x) ((unsigned)(x) >> PDRSHIFT) 167 1.2.2.2 ragge #define vax_dtob(x) ((unsigned)(x) << PDRSHIFT) 168 1.2.2.2 ragge #define vax_btop(x) ((unsigned)(x) >> PGSHIFT) 169 1.2.2.2 ragge #define vax_ptob(x) ((unsigned)(x) << PGSHIFT) 170 1.2.2.2 ragge 171 1.2.2.2 ragge #define DELAY(x) kern_delay(x) 172 1.2.2.2 ragge 173 1.2.2.2 ragge /* 174 1.2.2.2 ragge #define _spl(s) \ 175 1.2.2.2 ragge ({ \ 176 1.2.2.2 ragge register int _spl_r; \ 177 1.2.2.2 ragge \ 178 1.2.2.2 ragge asm __volatile ("mfpr $18,%0; mtpr $%1,$18; " : \ 179 1.2.2.2 ragge "&=r" (_spl_r) : "ir" (s)); \ 180 1.2.2.2 ragge _spl_r; \ 181 1.2.2.2 ragge }) 182 1.2.2.2 ragge */ 183 1.2.2.2 ragge 184 1.2.2.2 ragge /* spl0 requires checking for software interrupts */ 185 1.2.2.2 ragge 186 1.2.2.2 ragge 187 1.2.2.2 ragge #define splsoftclock() _spl(PSL2IPL(PSL_IPL08)) 188 1.2.2.2 ragge #define splnet() _spl(PSL2IPL(PSL_IPL0C)) 189 1.2.2.2 ragge #define spl4() _spl(PSL2IPL(PSL_IPL14)) 190 1.2.2.2 ragge #define spltty() _spl(PSL2IPL(PSL_IPL15)) 191 1.2.2.2 ragge #define splbio() _spl(PSL2IPL(PSL_IPL15)) 192 1.2.2.2 ragge #define splimp() _spl(PSL2IPL(PSL_IPL16)) 193 1.2.2.2 ragge #define splclock() _spl(PSL2IPL(PSL_IPL18)) 194 1.2.2.2 ragge #define splhigh() _spl(PSL2IPL(PSL_IPL1F)) 195 1.2.2.2 ragge #define splstatclock() splclock() 196 1.2.2.2 ragge /* 197 1.2.2.2 ragge #define splvm() _spl(PSL2IPL(PSL_IPL14)) 198 1.2.2.2 ragge #define splsched() _spl(PSL2IPL(PSL_IPL14)) 199 1.2.2.2 ragge */ 200 1.2.2.2 ragge 201 1.2.2.2 ragge /* watch out for side effects */ 202 1.2.2.2 ragge #define splx(s) (s ? _spl(s) : spl0()) 203 1.2.2.2 ragge 204 1.2.2.2 ragge #define ovbcopy(x,y,z) bcopy(x,y,z) /* This should work i hope... */ 205 1.2.2.2 ragge 206 1.2.2.2 ragge #endif 207
Indexes created Mon Oct 13 21:09:55 GMT 2025