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/* $NetBSD: param.h,v 1.26 1996/01/28 19:12:46 chopps 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 $Hdr: machparam.h 1.11 89/08/14$
*
* @(#)param.h 7.8 (Berkeley) 6/28/91
*/
#ifndef _MACHINE_PARAM_H_
#define _MACHINE_PARAM_H_
/*
* Machine dependent constants for amiga
*/
#define MACHINE "amiga"
#define MACHINE_ARCH "m68k"
#define MID_MACHINE MID_M68K
/*
* 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))
#define NBPG 8192 /* bytes/page */
#define PGOFSET (NBPG-1) /* byte offset into page */
#define PGSHIFT 13 /* LOG2(NBPG) */
#define NPTEPG (NBPG/(sizeof(u_int)))
#define NBSEG ((mmutype == MMU_68040) ? 32*NBPG : 2048*NBPG) /* bytes/segment */
#define SEGOFSET (NBSEG-1) /* byte offset into segment */
#define SEGSHIFT 24 /* LOG2(NBSEG) [68030 value] */
#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
#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 UPAGES 2 /* pages of u-area */
#define USPACE (UPAGES * NBPG)
/*
* 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 MCLBYTES 1024
#define MCLSHIFT 10
#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
/* pages ("clicks") to disk blocks */
#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
/* pages to bytes */
#define ctob(x) ((x) << PGSHIFT)
#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
/* bytes to disk blocks */
#define btodb(x) ((x) >> DEV_BSHIFT)
#define dbtob(x) ((x) << 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))
/*
* Mach derived conversion macros
*/
#define amiga_round_seg(x) ((((unsigned)(x)) + NBSEG - 1) & ~(NBSEG-1))
#define amiga_trunc_seg(x) ((unsigned)(x) & ~(NBSEG-1))
#define amiga_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
#define amiga_trunc_page(x) ((unsigned)(x) & ~(NBPG-1))
#define amiga_btop(x) ((unsigned)(x) >> PGSHIFT)
#define amiga_ptob(x) ((unsigned)(x) << PGSHIFT)
/*
* spl functions; all are normally done in-line
*/
#include <machine/psl.h>
#ifdef _KERNEL
static __inline int
splraise(npsl)
register int npsl;
{
register int opsl;
__asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : "&=d" (opsl) :
"di" (npsl));
return opsl;
}
#ifdef IPL_REMAP_1
extern int isr_exter_ipl;
extern void walk_ipls __P((int, int));
static __inline int
splx(npsl)
register int npsl;
{
register int opsl;
__asm __volatile ("clrl %0; movew sr,%0" : "=d" (opsl));
if ((isr_exter_ipl << 8) > (npsl & PSL_IPL))
walk_ipls(isr_exter_ipl, npsl);
__asm __volatile("movew %0,sr" : : "di" (npsl));
return opsl;
}
#endif
#ifndef IPL_REMAP_2
#define splx splraise
#else
extern int walk_ipls __P((int));
static __inline int
splx(npsl)
register int npsl;
{
register int opsl;
/* We should maybe have a flag telling if this is needed. */
opsl = walk_ipls(npsl);
__asm __volatile("movew %0,sr" : : "di" (npsl));
return opsl;
}
#endif
/*
* Shortcuts
*/
#define spl1() splraise(PSL_S|PSL_IPL1)
#define spl2() splraise(PSL_S|PSL_IPL2)
#define spl3() splraise(PSL_S|PSL_IPL3)
#define spl4() splraise(PSL_S|PSL_IPL4)
#define spl5() splraise(PSL_S|PSL_IPL5)
#define spl6() splraise(PSL_S|PSL_IPL6)
#define spl7() splraise(PSL_S|PSL_IPL7)
/*
* Hardware interrupt masks
*/
#define splbio() spl3()
#define splnet() spl3()
#define spltty() spl4()
#define splimp() spl4()
#if defined(LEV6_DEFER) || defined(IPL_REMAP_1) || defined(IPL_REMAP_2)
#define splclock() spl4()
#else
#define splclock() spl6()
#endif
#define splstatclock() splclock()
/*
* Software interrupt masks
*
* NOTE: splsoftclock() is used by hardclock() to lower the priority from
* clock to softclock before it calls softclock().
*/
#define splsoftclock() splx(PSL_S|PSL_IPL1)
#define splsoftnet() spl1()
#define splsofttty() spl1()
/*
* Miscellaneous
*/
#if defined(LEV6_DEFER) || defined(IPL_REMAP_1) || defined(IPL_REMAP_2)
#define splhigh() spl4()
#else
#define splhigh() spl7()
#endif
#define spl0() splx(PSL_S|PSL_IPL0)
void delay __P((int));
void DELAY __P((int));
#endif
#endif /* !_MACHINE_PARAM_H_ */
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