NetBSD/sys/arch/x68k/include/param.h

142 lines
4.9 KiB
C

/* $NetBSD: param.h,v 1.8 1997/10/09 12:58:31 oki Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1982, 1986, 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: Utah $Hdr: machparam.h 1.16 92/12/20$
*
* @(#)param.h 8.1 (Berkeley) 6/10/93
*/
#ifndef _MACHINE_PARAM_H_
#define _MACHINE_PARAM_H_
/*
* Machine dependent constants for x68k
*/
#define _MACHINE x68k
#define MACHINE "x68k"
#define PGSHIFT 12 /* LOG2(NBPG) */
#define KERNBASE 0x00000000 /* start of kernel virtual */
#define SEGSHIFT 22 /* LOG2(NBSEG) */
#define NBSEG (1 << SEGSHIFT) /* bytes/segment */
#define SEGOFSET (NBSEG-1) /* byte offset into segment */
#define UPAGES 3 /* pages of u-area */
#include <m68k/param.h>
#define NPTEPG (NBPG/(sizeof (pt_entry_t)))
#ifndef MSGBUFSIZE
#define MSGBUFSIZE NBPG /* default message buffer size */
#endif
/*
* Size of kernel malloc arena in CLBYTES-sized logical pages
*/
#ifndef NKMEMCLUSTERS
# define NKMEMCLUSTERS (2048 * 1024 / CLBYTES)
#endif
/*
* spl functions; all but spl0 are done in-line
*/
#include <machine/psl.h>
#define _spl(s) \
({ \
register int _spl_r; \
\
__asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
"&=d" (_spl_r) : "di" (s)); \
_spl_r; \
})
/* spl0 requires checking for software interrupts */
void spl0 __P((void));
#define spl1() _spl(PSL_S|PSL_IPL1)
#define spl2() _spl(PSL_S|PSL_IPL2)
#define spl3() _spl(PSL_S|PSL_IPL3)
#define spl4() _spl(PSL_S|PSL_IPL4)
#define spl5() _spl(PSL_S|PSL_IPL5)
#define spl6() _spl(PSL_S|PSL_IPL6)
#define spl7() _spl(PSL_S|PSL_IPL7)
#define splnone() spl0()
#define splsoftclock() spl1() /* disallow softclock */
#define splsoftnet() spl1() /* disallow softnet */
#define splnet() spl4() /* disallow network */
#define splbio() spl3() /* disallow block I/O */
#define splimp() spl4() /* disallow imput */
#define spltty() spl4() /* disallow tty interrupts */
#define splzs() spl6() /* disallow serial interrupts */
#define splclock() spl6() /* disallow clock interrupt */
#define splstatclock() spl6() /* disallow clock interrupt */
#define splvm() spl4() /* disallow virtual memory operations */
#define splhigh() spl7() /* disallow everything */
#define splsched() spl7() /* disallow scheduling */
/* watch out for side effects */
#define splx(s) ((s) & PSL_IPL ? _spl(s) : spl0())
#ifdef _KERNEL
#ifndef _LOCORE
int cpuspeed;
#define delay(n) do { register int N = cpuspeed * (n); while (--N > 0); } while(0)
#define DELAY(n) delay(n)
#endif
#endif
#ifdef COMPAT_HPUX
/*
* Constants/macros for HPUX multiple mapping of user address space.
* Pages in the first 256Mb are mapped in at every 256Mb segment.
*/
#define HPMMMASK 0xF0000000
#define ISHPMMADDR(v) \
((curproc->p_md.md_flags & MDP_HPUXMMAP) && \
((unsigned)(v) & HPMMMASK) && \
((unsigned)(v) & HPMMMASK) != HPMMMASK)
#define HPMMBASEADDR(v) \
((unsigned)(v) & ~HPMMMASK)
#endif
#endif /* !_MACHINE_PARAM_H_ */