1 /* 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 4 * 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 1.11 89/08/14 39 * from: @(#)param.h 7.8 (Berkeley) 6/28/91 40 * $Id: param.h,v 1.6 1993/08/14 02:46:00 mycroft Exp $ 41 */ 42 43 /* 44 * Machine dependent constants for HP9000 series 300. 45 */ 46 #define MACHINE "hp300" 47 #define MID_MACHINE MID_M68K4K 48 49 /* 50 * Round p (pointer or byte index) up to a correctly-aligned value 51 * for all data types (int, long, ...). The result is u_int and 52 * must be cast to any desired pointer type. 53 */ 54 #define ALIGNBYTES (sizeof(int) - 1) 55 #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) 56 57 #define NBPG 4096 /* bytes/page */ 58 #define PGOFSET (NBPG-1) /* byte offset into page */ 59 #define PGSHIFT 12 /* LOG2(NBPG) */ 60 #define NPTEPG (NBPG/(sizeof (struct pte))) 61 62 #define NBSEG (1024*NBPG) /* bytes/segment */ 63 #define SEGOFSET (NBSEG-1) /* byte offset into segment */ 64 #define SEGSHIFT 22 /* LOG2(NBSEG) */ 65 66 #define KERNBASE 0x00000000 /* start of kernel virtual */ 67 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 68 69 #define DEV_BSIZE 512 70 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 71 #define BLKDEV_IOSIZE 2048 72 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 73 74 #define CLSIZE 1 75 #define CLSIZELOG2 0 76 77 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 78 #define SSIZE 1 /* initial stack size/NBPG */ 79 #define SINCR 1 /* increment of stack/NBPG */ 80 81 #define UPAGES 3 /* pages of u-area */ 82 83 /* 84 * Constants related to network buffer management. 85 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 86 * on machines that exchange pages of input or output buffers with mbuf 87 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 88 * of the hardware page size. 89 */ 90 #define MSIZE 128 /* size of an mbuf */ 91 #define MCLBYTES 1024 92 #define MCLSHIFT 10 93 #define MCLOFSET (MCLBYTES - 1) 94 #ifndef NMBCLUSTERS 95 #ifdef GATEWAY 96 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 97 #else 98 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 99 #endif 100 #endif 101 102 /* 103 * Size of kernel malloc arena in CLBYTES-sized logical pages 104 */ 105 #ifndef NKMEMCLUSTERS 106 #define NKMEMCLUSTERS (2048*1024/CLBYTES) 107 #endif 108 109 /* pages ("clicks") (4096 bytes) to disk blocks */ 110 #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) 111 #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) 112 #define dtob(x) ((x)<<DEV_BSHIFT) 113 114 /* pages to bytes */ 115 #define ctob(x) ((x)<<PGSHIFT) 116 117 /* bytes to pages */ 118 #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT) 119 120 #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ 121 ((unsigned)(bytes) >> DEV_BSHIFT) 122 #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ 123 ((unsigned)(db) << DEV_BSHIFT) 124 125 /* 126 * Map a ``block device block'' to a file system block. 127 * This should be device dependent, and should use the bsize 128 * field from the disk label. 129 * For now though just use DEV_BSIZE. 130 */ 131 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) 132 133 /* 134 * Mach derived conversion macros 135 */ 136 #define hp300_round_seg(x) ((((unsigned)(x)) + NBSEG - 1) & ~(NBSEG-1)) 137 #define hp300_trunc_seg(x) ((unsigned)(x) & ~(NBSEG-1)) 138 #define hp300_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) 139 #define hp300_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) 140 #define hp300_btos(x) ((unsigned)(x) >> SEGSHIFT) 141 #define hp300_stob(x) ((unsigned)(x) << SEGSHIFT) 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 splvm() spl6() 175 #define splhigh() spl7() 176 #define splsched() spl7() 177 178 /* watch out for side effects */ 179 #define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) 180 181 #ifdef KERNEL 182 #ifndef LOCORE 183 int cpuspeed; 184 #define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); } 185 #endif 186 187 #else 188 #define DELAY(n) { register int N = (n); while (--N > 0); } 189 #endif 190 191 #ifdef HPUXCOMPAT 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_addr->u_pcb.pcb_flags&PCB_HPUXMMAP) && ((unsigned)(v)&HPMMMASK) != HPMMMASK) 199 #define HPMMBASEADDR(v) ((unsigned)(v) & ~HPMMMASK) 200 #endif 201