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param.h revision 1.5.8.1
      1  1.5.8.1    yamt /*	$NetBSD: param.h,v 1.5.8.1 2006/09/14 12:31:12 yamt Exp $	*/
      2      1.1     wdk 
      3      1.1     wdk /*
      4      1.1     wdk  * Copyright (c) 1992, 1993
      5      1.1     wdk  *	The Regents of the University of California.  All rights reserved.
      6      1.4     agc  *
      7      1.4     agc  * This code is derived from software contributed to Berkeley by
      8      1.4     agc  * the Systems Programming Group of the University of Utah Computer
      9      1.4     agc  * Science Department and Ralph Campbell.
     10      1.4     agc  *
     11      1.4     agc  * Redistribution and use in source and binary forms, with or without
     12      1.4     agc  * modification, are permitted provided that the following conditions
     13      1.4     agc  * are met:
     14      1.4     agc  * 1. Redistributions of source code must retain the above copyright
     15      1.4     agc  *    notice, this list of conditions and the following disclaimer.
     16      1.4     agc  * 2. Redistributions in binary form must reproduce the above copyright
     17      1.4     agc  *    notice, this list of conditions and the following disclaimer in the
     18      1.4     agc  *    documentation and/or other materials provided with the distribution.
     19      1.4     agc  * 3. Neither the name of the University nor the names of its contributors
     20      1.4     agc  *    may be used to endorse or promote products derived from this software
     21      1.4     agc  *    without specific prior written permission.
     22      1.4     agc  *
     23      1.4     agc  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24      1.4     agc  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25      1.4     agc  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26      1.4     agc  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27      1.4     agc  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28      1.4     agc  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29      1.4     agc  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30      1.4     agc  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31      1.4     agc  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32      1.4     agc  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33      1.4     agc  * SUCH DAMAGE.
     34      1.4     agc  *
     35      1.4     agc  * from: Utah Hdr: machparam.h 1.11 89/08/14
     36      1.4     agc  *
     37      1.4     agc  *	@(#)param.h	8.1 (Berkeley) 6/10/93
     38      1.4     agc  */
     39      1.4     agc /*
     40      1.4     agc  * Copyright (c) 1988 University of Utah.
     41      1.1     wdk  *
     42      1.1     wdk  * This code is derived from software contributed to Berkeley by
     43      1.1     wdk  * the Systems Programming Group of the University of Utah Computer
     44      1.1     wdk  * Science Department and Ralph Campbell.
     45      1.1     wdk  *
     46      1.1     wdk  * Redistribution and use in source and binary forms, with or without
     47      1.1     wdk  * modification, are permitted provided that the following conditions
     48      1.1     wdk  * are met:
     49      1.1     wdk  * 1. Redistributions of source code must retain the above copyright
     50      1.1     wdk  *    notice, this list of conditions and the following disclaimer.
     51      1.1     wdk  * 2. Redistributions in binary form must reproduce the above copyright
     52      1.1     wdk  *    notice, this list of conditions and the following disclaimer in the
     53      1.1     wdk  *    documentation and/or other materials provided with the distribution.
     54      1.1     wdk  * 3. All advertising materials mentioning features or use of this software
     55      1.1     wdk  *    must display the following acknowledgement:
     56      1.1     wdk  *	This product includes software developed by the University of
     57      1.1     wdk  *	California, Berkeley and its contributors.
     58      1.1     wdk  * 4. Neither the name of the University nor the names of its contributors
     59      1.1     wdk  *    may be used to endorse or promote products derived from this software
     60      1.1     wdk  *    without specific prior written permission.
     61      1.1     wdk  *
     62      1.1     wdk  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     63      1.1     wdk  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     64      1.1     wdk  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     65      1.1     wdk  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     66      1.1     wdk  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     67      1.1     wdk  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     68      1.1     wdk  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     69      1.1     wdk  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     70      1.1     wdk  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     71      1.1     wdk  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     72      1.1     wdk  * SUCH DAMAGE.
     73      1.1     wdk  *
     74      1.1     wdk  * from: Utah Hdr: machparam.h 1.11 89/08/14
     75      1.1     wdk  *
     76      1.1     wdk  *	@(#)param.h	8.1 (Berkeley) 6/10/93
     77      1.1     wdk  */
     78      1.1     wdk 
     79      1.1     wdk /*
     80      1.1     wdk  * Machine-dependent constants (VM, etc) common across MIPS cpus
     81      1.1     wdk  */
     82      1.1     wdk 
     83      1.1     wdk #include <mips/mips_param.h>
     84      1.1     wdk 
     85      1.1     wdk /*
     86      1.1     wdk  * Machine dependent constants for Mips Corp. machines
     87      1.1     wdk  */
     88      1.1     wdk 
     89      1.1     wdk #define	_MACHINE_ARCH	mipseb
     90      1.1     wdk #define	MACHINE_ARCH	"mipseb"
     91      1.1     wdk #define	_MACHINE	mipsco
     92      1.1     wdk #define	MACHINE		"mipsco"
     93      1.1     wdk #define	MID_MACHINE	MID_MIPS
     94      1.1     wdk 
     95      1.1     wdk #define	KERNBASE	0x80000000	/* start of kernel virtual */
     96      1.1     wdk #define KERNTEXTOFF	0x80001000	/* start of kernel text for kvm_mkdb */
     97      1.1     wdk #define	BTOPKERNBASE	((u_long)KERNBASE >> PGSHIFT)
     98      1.1     wdk 
     99      1.1     wdk #define	DEV_BSIZE	512
    100      1.1     wdk #define	DEV_BSHIFT	9		/* log2(DEV_BSIZE) */
    101      1.1     wdk #define BLKDEV_IOSIZE	2048
    102      1.1     wdk #define	MAXPHYS		(64 * 1024)	/* max raw I/O transfer size */
    103      1.1     wdk 
    104      1.1     wdk /*
    105      1.1     wdk  * Constants related to network buffer management.
    106      1.3  simonb  * MCLBYTES must be no larger than NBPG (the software page size), and,
    107      1.1     wdk  * on machines that exchange pages of input or output buffers with mbuf
    108      1.1     wdk  * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
    109      1.1     wdk  * of the hardware page size.
    110      1.1     wdk  */
    111      1.3  simonb #define	MSIZE		256		/* size of an mbuf */
    112      1.1     wdk 
    113      1.1     wdk #ifndef MCLSHIFT
    114      1.3  simonb #define	MCLSHIFT	11		/* convert bytes to m_buf clusters */
    115      1.1     wdk 					/* 2K cluster can hold Ether frame */
    116      1.1     wdk #endif	/* MCLSHIFT */
    117      1.1     wdk 
    118      1.1     wdk #define	MCLBYTES	(1 << MCLSHIFT)	/* size of a m_buf cluster */
    119      1.1     wdk 
    120      1.1     wdk #ifndef NMBCLUSTERS
    121      1.2     mrg #if defined(_KERNEL_OPT)
    122      1.1     wdk #include "opt_gateway.h"
    123      1.2     mrg #endif
    124      1.1     wdk 
    125      1.1     wdk #ifdef GATEWAY
    126      1.1     wdk #define	NMBCLUSTERS	2048		/* map size, max cluster allocation */
    127      1.1     wdk #else
    128      1.1     wdk #define	NMBCLUSTERS	1024		/* map size, max cluster allocation */
    129      1.1     wdk #endif
    130      1.1     wdk #endif
    131      1.1     wdk 
    132      1.1     wdk #include <machine/intr.h>
    133      1.1     wdk 
    134      1.1     wdk #ifdef _KERNEL
    135      1.1     wdk #ifndef _LOCORE
    136      1.1     wdk 
    137      1.1     wdk extern void delay __P((int n));
    138      1.1     wdk extern int cpuspeed;
    139  1.5.8.1    yamt static __inline void __attribute__((__unused__))
    140  1.5.8.1    yamt DELAY(int n)
    141  1.5.8.1    yamt {
    142  1.5.8.1    yamt 	register int __N = cpuspeed * n;
    143  1.5.8.1    yamt 
    144  1.5.8.1    yamt 	do {
    145  1.5.8.1    yamt 		__asm("addiu %0,%1,-1" : "=r" (__N) : "0" (__N));
    146  1.5.8.1    yamt 	} while (__N > 0);
    147  1.5.8.1    yamt }
    148      1.1     wdk 
    149      1.1     wdk #endif	/* !_LOCORE */
    150      1.1     wdk #endif	/* _KERNEL */
    151