1 /* $NetBSD: param.h,v 1.26 1996/05/17 15:38:08 thorpej 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 "hp300" 50 #define _MACHINE_ARCH m68k 51 #define MACHINE_ARCH "m68k" 52 #define MID_MACHINE MID_M68K4K 53 54 /* 55 * Round p (pointer or byte index) up to a correctly-aligned value for all 56 * data types (int, long, ...). The result is u_int and must be cast to 57 * any desired pointer type. 58 */ 59 #define ALIGNBYTES (sizeof(int) - 1) 60 #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) 61 62 #define PGSHIFT 12 /* LOG2(NBPG) */ 63 #define NBPG (1 << PGSHIFT) /* bytes/page */ 64 #define PGOFSET (NBPG-1) /* byte offset into page */ 65 #define NPTEPG (NBPG/(sizeof (pt_entry_t))) 66 67 #define SEGSHIFT 22 /* LOG2(NBSEG) */ 68 #define NBSEG (1 << SEGSHIFT) /* bytes/segment */ 69 #define SEGOFSET (NBSEG-1) /* byte offset into segment */ 70 71 #define KERNBASE 0x00000000 /* start of kernel virtual */ 72 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 73 74 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 75 #define DEV_BSIZE (1 << DEV_BSHIFT) 76 #define BLKDEV_IOSIZE 2048 77 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 78 79 #define CLSIZELOG2 0 80 #define CLSIZE (1 << CLSIZELOG2) 81 82 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ 83 #define SSIZE 1 /* initial stack size/NBPG */ 84 #define SINCR 1 /* increment of stack/NBPG */ 85 #define UPAGES 2 /* pages of u-area */ 86 #define USPACE (UPAGES * NBPG) /* total size of u-area */ 87 88 /* 89 * Constants related to network buffer management. 90 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 91 * on machines that exchange pages of input or output buffers with mbuf 92 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 93 * of the hardware page size. 94 */ 95 #define MSIZE 128 /* size of an mbuf */ 96 #define MCLSHIFT 11 97 #define MCLBYTES (1 << MCLSHIFT) /* large enough for ether MTU */ 98 #define MCLOFSET (MCLBYTES - 1) 99 100 #ifndef NMBCLUSTERS 101 #ifdef GATEWAY 102 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 103 #else 104 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 105 #endif 106 #endif 107 108 /* 109 * Size of kernel malloc arena in CLBYTES-sized logical pages 110 */ 111 #ifndef NKMEMCLUSTERS 112 #define NKMEMCLUSTERS (2048 * 1024 / CLBYTES) 113 #endif 114 115 /* pages ("clicks") to disk blocks */ 116 #define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) 117 #define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) 118 119 /* pages to bytes */ 120 #define ctob(x) ((x) << PGSHIFT) 121 #define btoc(x) (((x) + PGOFSET) >> PGSHIFT) 122 123 /* bytes to disk blocks */ 124 #define dbtob(x) ((x) << DEV_BSHIFT) 125 #define btodb(x) ((x) >> DEV_BSHIFT) 126 127 /* 128 * Map a ``block device block'' to a file system block. 129 * This should be device dependent, and should use the bsize 130 * field from the disk label. 131 * For now though just use DEV_BSIZE. 132 */ 133 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE / DEV_BSIZE)) 134 135 /* 136 * Mach derived conversion macros 137 */ 138 #define hp300_round_page(x) ((((unsigned)(x)) + PGOFSET) & ~PGOFSET) 139 #define hp300_trunc_page(x) ((unsigned)(x) & ~PGOFSET) 140 #define hp300_btop(x) ((unsigned)(x) >> PGSHIFT) 141 #define hp300_ptob(x) ((unsigned)(x) << PGSHIFT) 142 143 /* 144 * spl functions; all but spl0 are done in-line 145 */ 146 #include <machine/psl.h> 147 148 #define _spl(s) \ 149 ({ \ 150 register int _spl_r; \ 151 \ 152 __asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 153 "&=d" (_spl_r) : "di" (s)); \ 154 _spl_r; \ 155 }) 156 157 /* spl0 requires checking for software interrupts */ 158 #define spl1() _spl(PSL_S|PSL_IPL1) 159 #define spl2() _spl(PSL_S|PSL_IPL2) 160 #define spl3() _spl(PSL_S|PSL_IPL3) 161 #define spl4() _spl(PSL_S|PSL_IPL4) 162 #define spl5() _spl(PSL_S|PSL_IPL5) 163 #define spl6() _spl(PSL_S|PSL_IPL6) 164 #define spl7() _spl(PSL_S|PSL_IPL7) 165 166 #define splsoftclock() spl1() 167 #define splsoftnet() spl1() 168 #define splbio() spl5() 169 #define splnet() spl5() 170 #define spltty() spl5() 171 #define splimp() spl5() 172 #define splclock() spl6() 173 #define splstatclock() 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 #if defined(_KERNEL) && !defined(_LOCORE) 182 extern void _delay __P((u_int)); 183 #define delay(us) _delay((us) << 8) 184 #define DELAY(us) delay(us) 185 #endif /* _KERNEL && !_LOCORE */ 186 187 #ifdef COMPAT_HPUX 188 /* 189 * Constants/macros for HPUX multiple mapping of user address space. 190 * Pages in the first 256Mb are mapped in at every 256Mb segment. 191 */ 192 #define HPMMMASK 0xF0000000 193 #define ISHPMMADDR(v) \ 194 ((curproc->p_md.md_flags & MDP_HPUXMMAP) && \ 195 ((unsigned)(v) & HPMMMASK) && \ 196 ((unsigned)(v) & HPMMMASK) != HPMMMASK) 197 #define HPMMBASEADDR(v) \ 198 ((unsigned)(v) & ~HPMMMASK) 199 #endif 200