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/* $OpenBSD: param.h,v 1.3 1997/02/28 22:57:38 niklas Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1982, 1986, 1990 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 $Hdr: machparam.h 1.11 89/08/14$
*/
#ifndef _MACHINE_PARAM_H_
#define _MACHINE_PARAM_H_
/*
* Machine dependent constants for mvme88k
*/
#define MACHINE "mvme88k"
#define _MACHINE mvme88k
#define MACHINE_ARCH "m88k"
#define _MACHINE_ARCH m88k
#define MID_MACHINE MID_M88K
/*
* Round p (pointer or byte index) up to a correctly-aligned value
* for all data types (int, long, ...). The result is u_int and
* must be cast to any desired pointer type.
*/
#define ALIGNBYTES (sizeof(int) - 1)
#define ALIGN(p) (((u_int)(p) + (sizeof(int) - 1)) &~ (sizeof(int) - 1))
#ifndef NBPG
#define NBPG 4096 /* bytes/page */
#endif /* NBPG */
#define PGOFSET (NBPG-1) /* byte offset into page */
#define PGSHIFT 12 /* LOG2(NBPG) */
#define NPTEPG (NBPG/(sizeof(u_int)))
#define NBSEG (1<<22) /* bytes/segment */
#define SEGOFSET (NBSEG-1) /* byte offset into segment */
#define SEGSHIFT 22 /* LOG2(NBSEG) */
/*
* 187 Bug uses the bottom 64k. We allocate ptes to map this into the
* kernel. But when we link the kernel, we tell it to start linking
* past this 64k. How does this change KERNBASE? XXX
*/
#define KERNBASE 0x0 /* start of kernel virtual */
#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
#define DEV_BSIZE 512
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
#define BLKDEV_IOSIZE 2048 /* Should this be changed? XXX */
#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
#define CLSIZE 1
#define CLSIZELOG2 0
/* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */
#define SSIZE 1 /* initial stack size/NBPG */
#define SINCR 1 /* increment of stack/NBPG */
#define USPACE ctob(UPAGES)
#define UPAGES 3 /* pages of u-area */
#define UADDR 0xFFEE0000 /* address of u */
#define UVPN (UADDR>>PGSHIFT)/* virtual page number of u */
#define KERNELSTACK (UADDR+UPAGES*NBPG) /* top of kernel stack */
/*
* Constants related to network buffer management.
* MCLBYTES must be no larger than CLBYTES (the software page size), and,
* on machines that exchange pages of input or output buffers with mbuf
* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
* of the hardware page size.
*/
#define MSIZE 128 /* size of an mbuf */
#define MCLSHIFT 11
#define MCLBYTES (1 << MCLSHIFT)
#define MCLOFSET (MCLBYTES - 1)
#ifndef NMBCLUSTERS
#ifdef GATEWAY
#define NMBCLUSTERS 512 /* map size, max cluster allocation */
#else
#define NMBCLUSTERS 256 /* map size, max cluster allocation */
#endif
#endif
/*
* Size of kernel malloc arena in CLBYTES-sized logical pages
*/
#ifndef NKMEMCLUSTERS
#define NKMEMCLUSTERS (3072*1024/CLBYTES)
#endif
#define MAXPARTITIONS 16
/* pages ("clicks") to disk blocks */
#define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT))
#define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT))
#define dtob(x) ((x)<<DEV_BSHIFT)
/* pages to bytes */
#define ctob(x) ((x)<<PGSHIFT)
/* bytes to pages */
#define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT)
#define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \
((unsigned)(bytes) >> DEV_BSHIFT)
#define dbtob(db) /* calculates (db * DEV_BSIZE) */ \
((unsigned)(db) << DEV_BSHIFT)
/*
* Map a ``block device block'' to a file system block.
* This should be device dependent, and should use the bsize
* field from the disk label.
* For now though just use DEV_BSIZE.
*/
#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
#include <machine/psl.h>
#ifdef JUNK
/*
* Mach derived conversion macros
*/
#define m88k_round_seg(x) ((((unsigned)(x)) + NBSEG - 1) & ~(NBSEG-1))
#define m88k_trunc_seg(x) ((unsigned)(x) & ~(NBSEG-1))
#define m88k_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
#define m88k_trunc_page(x) ((unsigned)(x) & ~(NBPG-1))
#define m88k_btos(x) ((unsigned)(x) >> SEGSHIFT)
#define m88k_stob(x) ((unsigned)(x) << SEGSHIFT)
#define m88k_btop(x) ((unsigned)(x) >> PGSHIFT)
#define m88k_ptob(x) ((unsigned)(x) << PGSHIFT)
/*
* spl functions; all but spl0 are done in-line
*/
#include <machine/psl.h>
#define _debug_spl(s) \
({ \
register int _spl_r; \
\
asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
"&=d" (_spl_r) : "di" (s)); \
if ((_spl_r&PSL_IPL) > (s&PSL_IPL)) \
printf ("%s:%d:spl(%d) ==> spl(%d)!!\n",__FILE__,__LINE__, \
((PSL_IPL&_spl_r)>>8), ((PSL_IPL&s)>>8)); \
_spl_r; \
})
#define _spl_no_check(s) \
({ \
register int _spl_r; \
\
asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
"&=d" (_spl_r) : "di" (s)); \
_spl_r; \
})
#if defined (DEBUG)
#define _spl _debug_spl
#else
#define _spl _spl_no_check
#endif
/* spl0 requires checking for software interrupts */
#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()
#define splnet() spl1()
#define splbio() spl3()
#define splimp() spl3()
#define spltty() spl4()
#define splclock() spl6()
#define splstatclock() spl6()
#define splvm() spl6()
#define splhigh() spl7()
#define splsched() spl7()
#endif /* JUNK */
#ifdef _KERNEL
#define DELAY(x) delay(x)
#endif
#endif /* !_MACHINE_PARAM_H_ */
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