1 /* $NetBSD: param.h,v 1.17 1994/10/26 07:26:30 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1986, 1990, 1993 6 * The Regents of the University of California. 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 $Hdr: machparam.h 1.16 92/12/20$ 41 * 42 * @(#)param.h 8.1 (Berkeley) 6/10/93 43 */ 44 45 /* 46 * Machine dependent constants for HP9000 series 300. 47 */ 48 #define MACHINE "hp300" 49 #define MACHINE_ARCH "m68k" 50 #define MID_MACHINE MID_M68K4K 51 52 /* 53 * Round p (pointer or byte index) up to a correctly-aligned value for all 54 * data types (int, long, ...). The result is u_int and must be cast to 55 * any desired pointer type. 56 */ 57 #define ALIGNBYTES 3 58 #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) 59 60 #define NBPG 4096 /* bytes/page */ 61 #define PGOFSET (NBPG-1) /* byte offset into page */ 62 #define PGSHIFT 12 /* LOG2(NBPG) */ 63 #define NPTEPG (NBPG / (sizeof (pt_entry_t))) 64 65 #define NBSEG 0x400000 /* bytes/segment */ 66 #define SEGOFSET (NBSEG-1) /* byte offset into segment */ 67 #define SEGSHIFT 22 /* LOG2(NBSEG) */ 68 69 #define KERNBASE 0x00000000 /* start of kernel virtual */ 70 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 71 72 #define DEV_BSIZE 512 73 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 74 #define BLKDEV_IOSIZE 2048 75 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 76 77 #define CLSIZE 1 78 #define CLSIZELOG2 0 79 80 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 81 #define SSIZE 1 /* initial stack size/NBPG */ 82 #define SINCR 1 /* increment of stack/NBPG */ 83 84 #define UPAGES 2 /* pages of u-area */ 85 #define USPACE (UPAGES * NBPG) /* total size 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 2048 /* large enough for ether MTU */ 96 #define MCLSHIFT 11 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 (2048*1024/CLBYTES) 111 #endif 112 113 /* pages ("clicks") (4096 bytes) to disk blocks */ 114 #define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) 115 #define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) 116 #define dtob(x) ((x) << DEV_BSHIFT) 117 118 /* pages to bytes */ 119 #define ctob(x) ((x) << PGSHIFT) 120 121 /* bytes to pages */ 122 #define btoc(x) (((unsigned)(x) + PGOFSET) >> PGSHIFT) 123 124 #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ 125 ((unsigned)(bytes) >> DEV_BSHIFT) 126 #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ 127 ((unsigned)(db) << DEV_BSHIFT) 128 129 /* 130 * Map a ``block device block'' to a file system block. 131 * This should be device dependent, and should use the bsize 132 * field from the disk label. 133 * For now though just use DEV_BSIZE. 134 */ 135 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE / DEV_BSIZE)) 136 137 /* 138 * Mach derived conversion macros 139 */ 140 #define hp300_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) 141 #define hp300_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) 142 #define hp300_btop(x) ((unsigned)(x) >> PGSHIFT) 143 #define hp300_ptob(x) ((unsigned)(x) << PGSHIFT) 144 145 /* 146 * spl functions; all but spl0 are done in-line 147 */ 148 #include <machine/psl.h> 149 150 #define _spl(s) \ 151 ({ \ 152 register int _spl_r; \ 153 \ 154 __asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 155 "&=d" (_spl_r) : "di" (s)); \ 156 _spl_r; \ 157 }) 158 159 /* spl0 requires checking for software interrupts */ 160 #define spl1() _spl(PSL_S|PSL_IPL1) 161 #define spl2() _spl(PSL_S|PSL_IPL2) 162 #define spl3() _spl(PSL_S|PSL_IPL3) 163 #define spl4() _spl(PSL_S|PSL_IPL4) 164 #define spl5() _spl(PSL_S|PSL_IPL5) 165 #define spl6() _spl(PSL_S|PSL_IPL6) 166 #define spl7() _spl(PSL_S|PSL_IPL7) 167 168 #define splsoftclock() spl1() 169 #define splnet() spl1() 170 #define splbio() spl5() 171 #define splimp() spl5() 172 #define spltty() spl5() 173 #define splclock() spl6() 174 #define splstatclock() spl6() 175 #define splvm() spl6() 176 #define splhigh() spl7() 177 #define splsched() spl7() 178 179 /* watch out for side effects */ 180 #define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) 181 182 #ifdef KERNEL 183 #ifndef LOCORE 184 int cpuspeed; 185 #define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); } 186 #endif 187 #else 188 #define DELAY(n) { register int N = (n); while (--N > 0); } 189 #endif 190 191 #ifdef COMPAT_HPUX 192 /* 193 * Constants/macros for HPUX multiple mapping of user address space. 194 * Pages in the first 256Mb are mapped in at every 256Mb segment. 195 */ 196 #define HPMMMASK 0xF0000000 197 #define ISHPMMADDR(v) \ 198 ((curproc->p_md.md_flags & MDP_HPUXMMAP) && \ 199 ((unsigned)(v) & HPMMMASK) && \ 200 ((unsigned)(v) & HPMMMASK) != HPMMMASK) 201 #define HPMMBASEADDR(v) \ 202 ((unsigned)(v) & ~HPMMMASK) 203 #endif 204