1 /* 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1982, 1986, 1990, 1993 4 * The Regents of the University of California. 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 $Hdr: machparam.h 1.16 92/12/20$ 39 * 40 * from: @(#)param.h 8.1 (Berkeley) 6/10/93 41 * $Id: param.h,v 1.15 1994/09/16 02:39:58 jtc Exp $ 42 */ 43 44 /* 45 * Machine dependent constants for HP9000 series 300. 46 */ 47 #define MACHINE "hp300" 48 #define MACHINE_ARCH "m68k" 49 #define MID_MACHINE MID_M68K4K 50 51 /* 52 * Round p (pointer or byte index) up to a correctly-aligned value for all 53 * data types (int, long, ...). The result is u_int and must be cast to 54 * any desired pointer type. 55 */ 56 #define ALIGNBYTES 3 57 #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) 58 59 #define NBPG 4096 /* bytes/page */ 60 #define PGOFSET (NBPG-1) /* byte offset into page */ 61 #define PGSHIFT 12 /* LOG2(NBPG) */ 62 #define NPTEPG (NBPG / (sizeof (pt_entry_t))) 63 64 #define NBSEG 0x400000 /* bytes/segment */ 65 #define SEGOFSET (NBSEG-1) /* byte offset into segment */ 66 #define SEGSHIFT 22 /* LOG2(NBSEG) */ 67 68 #define KERNBASE 0x00000000 /* start of kernel virtual */ 69 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 70 71 #define DEV_BSIZE 512 72 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 73 #define BLKDEV_IOSIZE 2048 74 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 75 76 #define CLSIZE 1 77 #define CLSIZELOG2 0 78 79 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 80 #define SSIZE 1 /* initial stack size/NBPG */ 81 #define SINCR 1 /* increment of stack/NBPG */ 82 83 #define UPAGES 2 /* pages of u-area */ 84 #define USPACE (UPAGES * NBPG) /* total size of u-area */ 85 86 /* 87 * Constants related to network buffer management. 88 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 89 * on machines that exchange pages of input or output buffers with mbuf 90 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 91 * of the hardware page size. 92 */ 93 #define MSIZE 128 /* size of an mbuf */ 94 #define MCLBYTES 2048 /* large enough for ether MTU */ 95 #define MCLSHIFT 11 96 #define MCLOFSET (MCLBYTES - 1) 97 #ifndef NMBCLUSTERS 98 #ifdef GATEWAY 99 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 100 #else 101 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 102 #endif 103 #endif 104 105 /* 106 * Size of kernel malloc arena in CLBYTES-sized logical pages 107 */ 108 #ifndef NKMEMCLUSTERS 109 #define NKMEMCLUSTERS (2048*1024/CLBYTES) 110 #endif 111 112 /* pages ("clicks") (4096 bytes) to disk blocks */ 113 #define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) 114 #define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) 115 #define dtob(x) ((x) << DEV_BSHIFT) 116 117 /* pages to bytes */ 118 #define ctob(x) ((x) << PGSHIFT) 119 120 /* bytes to pages */ 121 #define btoc(x) (((unsigned)(x) + PGOFSET) >> PGSHIFT) 122 123 #ifndef LABELSECTOR 124 #define LABELSECTOR (1024 / DEV_BSIZE) 125 #endif 126 #ifndef LABELOFFSET 127 #define LABELOFFSET 0 128 #endif 129 130 #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ 131 ((unsigned)(bytes) >> DEV_BSHIFT) 132 #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ 133 ((unsigned)(db) << DEV_BSHIFT) 134 135 /* 136 * Map a ``block device block'' to a file system block. 137 * This should be device dependent, and should use the bsize 138 * field from the disk label. 139 * For now though just use DEV_BSIZE. 140 */ 141 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE / DEV_BSIZE)) 142 143 /* 144 * Mach derived conversion macros 145 */ 146 #define hp300_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) 147 #define hp300_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) 148 #define hp300_btop(x) ((unsigned)(x) >> PGSHIFT) 149 #define hp300_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 _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 _spl_r; \ 163 }) 164 165 /* spl0 requires checking for software interrupts */ 166 #define spl1() _spl(PSL_S|PSL_IPL1) 167 #define spl2() _spl(PSL_S|PSL_IPL2) 168 #define spl3() _spl(PSL_S|PSL_IPL3) 169 #define spl4() _spl(PSL_S|PSL_IPL4) 170 #define spl5() _spl(PSL_S|PSL_IPL5) 171 #define spl6() _spl(PSL_S|PSL_IPL6) 172 #define spl7() _spl(PSL_S|PSL_IPL7) 173 174 #define splsoftclock() spl1() 175 #define splnet() spl1() 176 #define splbio() spl5() 177 #define splimp() spl5() 178 #define spltty() spl5() 179 #define splclock() spl6() 180 #define splstatclock() spl6() 181 #define splvm() spl6() 182 #define splhigh() spl7() 183 #define splsched() spl7() 184 185 /* watch out for side effects */ 186 #define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) 187 188 #ifdef KERNEL 189 #ifndef LOCORE 190 int cpuspeed; 191 #define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); } 192 #endif 193 #else 194 #define DELAY(n) { register int N = (n); while (--N > 0); } 195 #endif 196 197 #ifdef COMPAT_HPUX 198 /* 199 * Constants/macros for HPUX multiple mapping of user address space. 200 * Pages in the first 256Mb are mapped in at every 256Mb segment. 201 */ 202 #define HPMMMASK 0xF0000000 203 #define ISHPMMADDR(v) \ 204 ((curproc->p_md.md_flags & MDP_HPUXMMAP) && \ 205 ((unsigned)(v) & HPMMMASK) && \ 206 ((unsigned)(v) & HPMMMASK) != HPMMMASK) 207 #define HPMMBASEADDR(v) \ 208 ((unsigned)(v) & ~HPMMMASK) 209 #endif 210