/*      $OpenBSD: param.h,v 1.11 1998/08/30 22:05:35 millert Exp $ *//* * Copyright (c) 1988 University of Utah. * Copyright (c) 1992, 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 and Ralph Campbell. * * 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 *	from: @(#)param.h	8.1 (Berkeley) 6/10/93 */#ifndef _MIPS_PARAM_H_#define _MIPS_PARAM_H_#ifdef _KERNEL    #ifdef _LOCORE#include <machine/psl.h>                                             #else                                                                #include <machine/cpu.h>#endif                                                              #endif                                                             #define MACHINE_ARCH	"mips"#define _MACHINE_ARCH	mips#define MID_MACHINE	0	/* None but has to be defined *//* * 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	7#define	ALIGN(p)	(((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)#define ALIGNED_POINTER(p, t)  ((((u_int32_t)(p)) & (sizeof (t) - 1)) == 0)#define	NBPG		4096		/* bytes/page */#define	PGOFSET		(NBPG-1)	/* byte offset into page */#define	PGSHIFT		12		/* LOG2(NBPG) */#define	NPTEPG		(NBPG/4)#define NBSEG		0x400000	/* bytes/segment */#define	SEGOFSET	(NBSEG-1)	/* byte offset into segment */#define	SEGSHIFT	22		/* LOG2(NBSEG) */#define	KERNBASE	0x80000000	/* start of kernel virtual */#define	BTOPKERNBASE	((u_long)KERNBASE >> PGSHIFT)#define	DEV_BSHIFT	9		/* log2(DEV_BSIZE) */#define	DEV_BSIZE	(1 << DEV_BSHIFT)#define BLKDEV_IOSIZE	2048/* XXX Maxphys temporary changed to 32K while SCSI driver is fixed. */#define	MAXPHYS		(32 * 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 */#if defined(_LOCORE) && defined(notyet)#define	UADDR		0xffffffffffffc000	/* address of u */#else#define	UADDR		0xffffc000	/* address of u */#endif#define USPACE		(UPAGES*NBPG)	/* size of u-area in bytes */#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)	/* enough for whole Ethernet packet */#define	MCLOFSET	(MCLBYTES - 1)#ifdef PMON#define	NMBCLUSTERS	256		/* map size, max cluster allocation */#endif#ifndef NMBCLUSTERS#ifdef GATEWAY#define	NMBCLUSTERS	2048		/* map size, max cluster allocation */#else#define	NMBCLUSTERS	1024		/* map size, max cluster allocation */#endif#endif#define	MSGBUFSIZE	8192/* * Size of kernel malloc arena in CLBYTES-sized logical pages */ #ifndef NKMEMCLUSTERS#ifdef PMON#define NKMEMCLUSTERS   (512 * 1024 / CLBYTES)	/* 0.5Mb */#else#define NKMEMCLUSTERS   (128 * 1024 * 1024 / CLBYTES)#endif#endif/* pages ("clicks") (4096 bytes) 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))/* * Conversion macros */#define mips_round_page(x)	((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))#define mips_trunc_page(x)	((unsigned)(x) & ~(NBPG-1))#define mips_btop(x)		((unsigned)(x) >> PGSHIFT)#define mips_ptob(x)		((unsigned)(x) << PGSHIFT)#ifdef _KERNEL#ifndef _LOCORE#define	DELAY(n)	delay(n)void delay __P((int));void nanodelay __P((int));#endif#else /* !_KERNEL */#define	DELAY(n)	{ register int N = (n); while (--N > 0); }void delay __P((int));#endif /* !_KERNEL */#endif /* !_MIPS_PARAM_H_ */