1 /* $NetBSD: param.h,v 1.5 1997/06/10 20:20:06 veego 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 #ifndef _MACHINE_PARAM_H_ 46 #define _MACHINE_PARAM_H_ 47 48 /* 49 * Machine dependent constants for x68k 50 */ 51 #define _MACHINE x68k 52 #define MACHINE "x68k" 53 54 #define PGSHIFT 12 /* LOG2(NBPG) */ 55 #define KERNBASE 0x00000000 /* start of kernel virtual */ 56 57 #define SEGSHIFT 22 /* LOG2(NBSEG) */ 58 #define NBSEG (1 << SEGSHIFT) /* bytes/segment */ 59 #define SEGOFSET (NBSEG-1) /* byte offset into segment */ 60 61 #define UPAGES 3 /* pages of u-area */ 62 63 #include <m68k/param.h> 64 65 /* 66 * Size of kernel malloc arena in CLBYTES-sized logical pages 67 */ 68 #ifndef NKMEMCLUSTERS 69 # define NKMEMCLUSTERS (2048 * 1024 / CLBYTES) 70 #endif 71 72 /* 73 * spl functions; all but spl0 are done in-line 74 */ 75 #include <machine/psl.h> 76 77 #define _spl(s) \ 78 ({ \ 79 register int _spl_r; \ 80 \ 81 __asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ 82 "&=d" (_spl_r) : "di" (s)); \ 83 _spl_r; \ 84 }) 85 86 /* spl0 requires checking for software interrupts */ 87 void spl0(); 88 #define spl1() _spl(PSL_S|PSL_IPL1) 89 #define spl2() _spl(PSL_S|PSL_IPL2) 90 #define spl3() _spl(PSL_S|PSL_IPL3) 91 #define spl4() _spl(PSL_S|PSL_IPL4) 92 #define spl5() _spl(PSL_S|PSL_IPL5) 93 #define spl6() _spl(PSL_S|PSL_IPL6) 94 #define spl7() _spl(PSL_S|PSL_IPL7) 95 96 #define splnone() spl0() 97 #define splsoftclock() spl1() /* disallow softclock */ 98 #define splsoftnet() spl1() /* disallow softnet */ 99 #define splnet() spl4() /* disallow network */ 100 #define splbio() spl3() /* disallow block I/O */ 101 #define splimp() spl4() /* disallow imput */ 102 #define spltty() spl4() /* disallow tty interrupts */ 103 #define splzs() spl6() /* disallow serial interrupts */ 104 #define splclock() spl6() /* disallow clock interrupt */ 105 #define splstatclock() spl6() /* disallow clock interrupt */ 106 #define splvm() spl4() /* disallow virtual memory operations */ 107 #define splhigh() spl7() /* disallow everything */ 108 #define splsched() spl7() /* disallow scheduling */ 109 110 /* watch out for side effects */ 111 #define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) 112 113 #ifdef _KERNEL 114 #ifndef _LOCORE 115 int cpuspeed; 116 #define delay(n) do { register int N = cpuspeed * (n); while (--N > 0); } while(0) 117 #define DELAY(n) delay(n) 118 #endif 119 #endif 120 121 #ifdef COMPAT_HPUX 122 /* 123 * Constants/macros for HPUX multiple mapping of user address space. 124 * Pages in the first 256Mb are mapped in at every 256Mb segment. 125 */ 126 #define HPMMMASK 0xF0000000 127 #define ISHPMMADDR(v) \ 128 ((curproc->p_md.md_flags & MDP_HPUXMMAP) && \ 129 ((unsigned)(v) & HPMMMASK) && \ 130 ((unsigned)(v) & HPMMMASK) != HPMMMASK) 131 #define HPMMBASEADDR(v) \ 132 ((unsigned)(v) & ~HPMMMASK) 133 #endif 134 135 #endif /* !_MACHINE_PARAM_H_ */ 136