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param.h revision 1.12.4.1 
      1 /*	$NetBSD: param.h,v 1.12.4.1 2011/03/05 20:51:12 rmind Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 University of Utah.
      5  * Copyright (c) 1992, 1993
      6  *	The Regents of the University of California.  All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * the Systems Programming Group of the University of Utah Computer
     10  * Science Department and Ralph Campbell.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  * from: Utah Hdr: machparam.h 1.11 89/08/14
     37  *
     38  *	@(#)param.h	8.1 (Berkeley) 6/10/93
     39  */
     40 
     41 /*
     42  * Machine-dependent constants (VM, etc) common across MIPS cpus
     43  */
     44 
     45 #ifndef	_MIPSCO_PARAM_H_
     46 #define	_MIPSCO_PARAM_H_
     47 
     48 #include <mips/mips_param.h>
     49 
     50 /*
     51  * Machine dependent constants for Mips Corp. machines
     52  */
     53 
     54 #define	_MACHINE	mipsco
     55 #define	MACHINE		"mipsco"
     56 
     57 #define	KERNBASE	0x80000000	/* start of kernel virtual */
     58 #define KERNTEXTOFF	0x80001000	/* start of kernel text for kvm_mkdb */
     59 #define	BTOPKERNBASE	((u_long)KERNBASE >> PGSHIFT)
     60 
     61 #define	DEV_BSIZE	512
     62 #define	DEV_BSHIFT	9		/* log2(DEV_BSIZE) */
     63 #define BLKDEV_IOSIZE	2048
     64 #define	MAXPHYS		(64 * 1024)	/* max raw I/O transfer size */
     65 
     66 #ifdef _KERNEL
     67 #ifndef _LOCORE
     68 
     69 #include <machine/intr.h>
     70 
     71 extern void delay(int n);
     72 extern int cpuspeed;
     73 static __inline void __attribute__((__unused__))
     74 DELAY(int n)
     75 {
     76 	register int __N = cpuspeed * n;
     77 
     78 	do {
     79 		__asm("addiu %0,%1,-1" : "=r" (__N) : "0" (__N));
     80 	} while (__N > 0);
     81 }
     82 
     83 #endif	/* !_LOCORE */
     84 #endif	/* _KERNEL */
     85 
     86 #endif	/* !_MIPSCO_PARAM_H_ */
     87