* Copyright (c) 1988 University of Utah.
* Copyright (c) 1992 OMRON Corporation.
* Copyright (c) 1982, 1986, 1990, 1992 The Regents of the University of California.
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* %sccs.include.redist.c%
* from: Utah $Hdr: machparam.h 1.11 89/08/14$
* OMRON: $Id: param.h,v 1.3 92/06/14 06:28:28 moti Exp $
* from: hp300/include/param.h 7.12 (Berkeley) 7/8/92
* @(#)param.h 7.2 (Berkeley) %G%
* Machine dependent constants for LUNA taken from:
* Param.h for HP9000 series 300.
#define MACHINE "luna68k"
* 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 ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
#define NBPG 4096 /* bytes/page */
#define PGOFSET (NBPG-1) /* byte offset into page */
#define PGSHIFT 12 /* LOG2(NBPG) */
#define NPTEPG (NBPG/(sizeof (struct pte)))
#define NBSEG 0x400000 /* bytes/segment */
#define SEGOFSET (NBSEG-1) /* byte offset into segment */
#define SEGSHIFT 22 /* LOG2(NBSEG) */
#define KERNBASE 0x00000000 /* start of kernel virtual */
#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
#define BLKDEV_IOSIZE 2048
#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
/* 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 3 /* pages of u-area */
* 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 MCLOFSET (MCLBYTES - 1)
#define NMBCLUSTERS 512 /* map size, max cluster allocation */
#define NMBCLUSTERS 256 /* map size, max cluster allocation */
* Size of kernel malloc arena in CLBYTES-sized logical pages
#define NKMEMCLUSTERS (2048*1024/CLBYTES)
/* pages ("clicks") (4096 bytes) to disk blocks */
#define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT))
#define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT))
#define dtob(x) ((x)<<DEV_BSHIFT)
#define ctob(x) ((x)<<PGSHIFT)
#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))
* Mach derived conversion macros
#define luna_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
#define luna_trunc_page(x) ((unsigned)(x) & ~(NBPG-1))
#define luna_btop(x) ((unsigned)(x) >> PGSHIFT)
#define luna_ptob(x) ((unsigned)(x) << PGSHIFT)
* spl functions; all but spl0 are done in-line
asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
"&=d" (_spl_r) : "di" (s)); \
/* 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 splsoftclock() spl1()
#define splclock() spl5()
#define splstatclock() spl5()
#define splsched() spl7()
/* watch out for side effects */
#define splx(s) (s & PSL_IPL ? _spl(s) : spl0())
#define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); }
#define DELAY(n) { register int N = (n); while (--N > 0); }