param.h revision 1.18.2.2
1 1.18.2.2 gwr /* 2 1.18.2.2 gwr * Copyright (c) 1994 Gordon W. Ross 3 1.18.2.2 gwr * Copyright (c) 1993 Adam Glass 4 1.18.2.2 gwr * Copyright (c) 1988 University of Utah. 5 1.18.2.2 gwr * Copyright (c) 1982, 1986, 1990, 1993 6 1.18.2.2 gwr * The Regents of the University of California. All rights reserved. 7 1.18.2.2 gwr * 8 1.18.2.2 gwr * This code is derived from software contributed to Berkeley by 9 1.18.2.2 gwr * the Systems Programming Group of the University of Utah Computer 10 1.18.2.2 gwr * Science Department. 11 1.18.2.2 gwr * 12 1.18.2.2 gwr * Redistribution and use in source and binary forms, with or without 13 1.18.2.2 gwr * modification, are permitted provided that the following conditions 14 1.18.2.2 gwr * are met: 15 1.18.2.2 gwr * 1. Redistributions of source code must retain the above copyright 16 1.18.2.2 gwr * notice, this list of conditions and the following disclaimer. 17 1.18.2.2 gwr * 2. Redistributions in binary form must reproduce the above copyright 18 1.18.2.2 gwr * notice, this list of conditions and the following disclaimer in the 19 1.18.2.2 gwr * documentation and/or other materials provided with the distribution. 20 1.18.2.2 gwr * 3. All advertising materials mentioning features or use of this software 21 1.18.2.2 gwr * must display the following acknowledgement: 22 1.18.2.2 gwr * This product includes software developed by the University of 23 1.18.2.2 gwr * California, Berkeley and its contributors. 24 1.18.2.2 gwr * 4. Neither the name of the University nor the names of its contributors 25 1.18.2.2 gwr * may be used to endorse or promote products derived from this software 26 1.18.2.2 gwr * without specific prior written permission. 27 1.18.2.2 gwr * 28 1.18.2.2 gwr * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 1.18.2.2 gwr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 1.18.2.2 gwr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 1.18.2.2 gwr * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 1.18.2.2 gwr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 1.18.2.2 gwr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 1.18.2.2 gwr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 1.18.2.2 gwr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 1.18.2.2 gwr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 1.18.2.2 gwr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 1.18.2.2 gwr * SUCH DAMAGE. 39 1.18.2.2 gwr * 40 1.18.2.2 gwr * from: Utah Hdr: machparam.h 1.16 92/12/20 41 1.18.2.2 gwr * from: @(#)param.h 8.1 (Berkeley) 6/10/93 42 1.18.2.2 gwr * $Id: param.h,v 1.18.2.2 1994/09/20 16:31:04 gwr Exp $ 43 1.18.2.2 gwr */ 44 1.18.2.2 gwr 45 1.18.2.2 gwr #ifndef MACHINE 46 1.18.2.2 gwr 47 1.18.2.2 gwr /* 48 1.18.2.2 gwr * Machine dependent constants for the Sun3 series. 49 1.18.2.2 gwr */ 50 1.18.2.2 gwr #define MACHINE "sun3" 51 1.18.2.2 gwr #define MACHINE_ARCH "m68k" 52 1.18.2.2 gwr #define MID_MACHINE MID_M68K 53 1.18.2.2 gwr 54 1.18.2.2 gwr /* 55 1.18.2.2 gwr * Round p (pointer or byte index) up to a correctly-aligned value 56 1.18.2.2 gwr * for all data types (int, long, ...). The result is u_int and 57 1.18.2.2 gwr * must be cast to any desired pointer type. 58 1.18.2.2 gwr */ 59 1.18.2.2 gwr #define ALIGNBYTES 3 60 1.18.2.2 gwr #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) 61 1.18.2.2 gwr 62 1.18.2.2 gwr #define NBPG 8192 /* bytes/page */ 63 1.18.2.2 gwr #define PGOFSET (NBPG-1) /* byte offset into page */ 64 1.18.2.2 gwr #define PGSHIFT 13 /* LOG2(NBPG) */ 65 1.18.2.2 gwr 66 1.18.2.2 gwr #define NBSG 0x20000 /* bytes/segment */ 67 1.18.2.2 gwr #define SEGOFSET (NBSG-1) /* byte offset into segment */ 68 1.18.2.2 gwr #define SEGSHIFT 17 /* LOG2(NBSG) */ 69 1.18.2.2 gwr 70 1.18.2.2 gwr #define KERNBASE 0x0E000000 /* start of kernel virtual */ 71 1.18.2.2 gwr #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 72 1.18.2.2 gwr 73 1.18.2.2 gwr #define DEV_BSIZE 512 74 1.18.2.2 gwr #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 75 1.18.2.2 gwr #define BLKDEV_IOSIZE 2048 76 1.18.2.2 gwr #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 77 1.18.2.2 gwr 78 1.18.2.2 gwr #define CLSIZE 1 79 1.18.2.2 gwr #define CLSIZELOG2 0 80 1.18.2.2 gwr 81 1.18.2.2 gwr /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 82 1.18.2.2 gwr #define SSIZE 1 /* initial stack size/NBPG */ 83 1.18.2.2 gwr #define SINCR 1 /* increment of stack/NBPG */ 84 1.18.2.2 gwr 85 1.18.2.2 gwr #define UPAGES 3 /* pages of u-area */ 86 1.18.2.2 gwr 87 1.18.2.2 gwr /* 88 1.18.2.2 gwr * Constants related to network buffer management. 89 1.18.2.2 gwr * MCLBYTES must be no larger than CLBYTES (the software page size), and, 90 1.18.2.2 gwr * on machines that exchange pages of input or output buffers with mbuf 91 1.18.2.2 gwr * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 92 1.18.2.2 gwr * of the hardware page size. 93 1.18.2.2 gwr */ 94 1.18.2.2 gwr #define MSIZE 128 /* size of an mbuf */ 95 1.18.2.2 gwr #define MCLBYTES 2048 /* large enough for ether MTU */ 96 1.18.2.2 gwr #define MCLSHIFT 11 97 1.18.2.2 gwr #define MCLOFSET (MCLBYTES - 1) 98 1.18.2.2 gwr #ifndef NMBCLUSTERS 99 1.18.2.2 gwr #ifdef GATEWAY 100 1.18.2.2 gwr #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 101 1.18.2.2 gwr #else 102 1.18.2.2 gwr #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 103 1.18.2.2 gwr #endif 104 1.18.2.2 gwr #endif 105 1.18.2.2 gwr 106 1.18.2.2 gwr /* 107 1.18.2.2 gwr * Size of kernel malloc arena in CLBYTES-sized logical pages 108 1.18.2.2 gwr */ 109 1.18.2.2 gwr #ifndef NKMEMCLUSTERS 110 1.18.2.2 gwr #define NKMEMCLUSTERS (2048*1024/CLBYTES) 111 1.18.2.2 gwr #endif 112 1.18.2.2 gwr 113 1.18.2.2 gwr /* pages ("clicks") (4096 bytes) to disk blocks */ 114 1.18.2.2 gwr #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) 115 1.18.2.2 gwr #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) 116 1.18.2.2 gwr #define dtob(x) ((x)<<DEV_BSHIFT) 117 1.18.2.2 gwr 118 1.18.2.2 gwr /* pages to bytes */ 119 1.18.2.2 gwr #define ctob(x) ((x)<<PGSHIFT) 120 1.18.2.2 gwr 121 1.18.2.2 gwr /* bytes to pages */ 122 1.18.2.2 gwr #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT) 123 1.18.2.2 gwr 124 1.18.2.2 gwr #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ 125 1.18.2.2 gwr ((unsigned)(bytes) >> DEV_BSHIFT) 126 1.18.2.2 gwr #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ 127 1.18.2.2 gwr ((unsigned)(db) << DEV_BSHIFT) 128 1.18.2.2 gwr 129 1.18.2.2 gwr /* 130 1.18.2.2 gwr * Map a ``block device block'' to a file system block. 131 1.18.2.2 gwr * This should be device dependent, and should use the bsize 132 1.18.2.2 gwr * field from the disk label. 133 1.18.2.2 gwr * For now though just use DEV_BSIZE. 134 1.18.2.2 gwr */ 135 1.18.2.2 gwr #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 136 1.18.2.2 gwr 137 1.18.2.2 gwr /* 138 1.18.2.2 gwr * Mach derived conversion macros 139 1.18.2.2 gwr */ 140 1.18.2.2 gwr #define sun3_round_seg(x) ((((unsigned)(x)) + NBSG - 1) & ~(NBSG-1)) 141 1.18.2.2 gwr #define sun3_trunc_seg(x) ((unsigned)(x) & ~(NBSG-1)) 142 1.18.2.2 gwr #define sun3_round_up_seg(x) (sun3_trunc_seg(x) + NBSG) 143 1.18.2.2 gwr #define sun3_btos(x) ((unsigned)(x) >> SEGSHIFT) 144 1.18.2.2 gwr #define sun3_stob(x) ((unsigned)(x) << SEGSHIFT) 145 1.18.2.2 gwr 146 1.18.2.2 gwr #define sun3_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) 147 1.18.2.2 gwr #define sun3_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) 148 1.18.2.2 gwr #define sun3_round_up_page(x) (sun3_round_page(x) + NBPG) 149 1.18.2.2 gwr #define sun3_btop(x) ((unsigned)(x) >> PGSHIFT) 150 1.18.2.2 gwr #define sun3_ptob(x) ((unsigned)(x) << PGSHIFT) 151 1.18.2.2 gwr 152 1.18.2.2 gwr /* 153 1.18.2.2 gwr * Suns have a REAL interrupt register, so spl0() and splx(s) 154 1.18.2.2 gwr * have no need to check for any simulated interrupts, etc. 155 1.18.2.2 gwr * All are done in-line (if optimization turned on). 156 1.18.2.2 gwr */ 157 1.18.2.2 gwr #include <machine/psl.h> 158 1.18.2.2 gwr 159 1.18.2.2 gwr #ifdef __GNUC__ 160 1.18.2.2 gwr /* 161 1.18.2.2 gwr * This is as close to a macro as one can get. 162 1.18.2.2 gwr * (See the GCC extensions info document.) 163 1.18.2.2 gwr */ 164 1.18.2.2 gwr extern __inline__ int _spl(int new) 165 1.18.2.2 gwr { 166 1.18.2.2 gwr register int old; 167 1.18.2.2 gwr __asm__ __volatile ("clrl %0; movw sr,%0; movw %1,sr" : 168 1.18.2.2 gwr "&=d" (old) : "di" (new)); 169 1.18.2.2 gwr return (old); 170 1.18.2.2 gwr } 171 1.18.2.2 gwr #endif /* GNUC */ 172 1.18.2.2 gwr 173 1.18.2.2 gwr #define spl0() _spl(PSL_S|PSL_IPL0) 174 1.18.2.2 gwr #define spl1() _spl(PSL_S|PSL_IPL1) 175 1.18.2.2 gwr #define spl2() _spl(PSL_S|PSL_IPL2) 176 1.18.2.2 gwr #define spl3() _spl(PSL_S|PSL_IPL3) 177 1.18.2.2 gwr #define spl4() _spl(PSL_S|PSL_IPL4) 178 1.18.2.2 gwr #define spl5() _spl(PSL_S|PSL_IPL5) 179 1.18.2.2 gwr #define spl6() _spl(PSL_S|PSL_IPL6) 180 1.18.2.2 gwr #define spl7() _spl(PSL_S|PSL_IPL7) 181 1.18.2.2 gwr #define splx(x) _spl(x) 182 1.18.2.2 gwr 183 1.18.2.2 gwr #define splsoftclock() spl1() 184 1.18.2.2 gwr #define splnet() spl3() 185 1.18.2.2 gwr #define splbio() spl2() 186 1.18.2.2 gwr #define splimp() spl3() 187 1.18.2.2 gwr #define spltty() spl2() 188 1.18.2.2 gwr #define splzs() spl6() 189 1.18.2.2 gwr #define splclock() spl5() 190 1.18.2.2 gwr #define splstatclock() splclock() 191 1.18.2.2 gwr #define splvm() splimp() 192 1.18.2.2 gwr #define splhigh() spl7() 193 1.18.2.2 gwr #define splsched() spl7() 194 1.18.2.2 gwr 195 1.18.2.2 gwr #ifdef KERNEL 196 1.18.2.2 gwr #ifndef LOCORE 197 1.18.2.2 gwr #define DELAY(n) delay(n) 198 1.18.2.2 gwr #endif 199 1.18.2.2 gwr 200 1.18.2.2 gwr #else 201 1.18.2.2 gwr #define DELAY(n) { register int N = (n); while (--N > 0); } 202 1.18.2.2 gwr #endif 203 1.18.2.2 gwr 204 1.18.2.2 gwr #endif /* MACHINE */ 205
Indexes created Mon Oct 20 11:09:49 GMT 2025