NetBSD/sys/arch/arc/include/param.h

138 lines
4.8 KiB
C

/* $NetBSD: param.h,v 1.14 2000/06/30 17:55:12 itojun Exp $ */
/* $OpenBSD: param.h,v 1.9 1997/04/30 09:54:15 niklas 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 _ARC_PARAM_H_
#define _ARC_PARAM_H_
/*
* Machine-dependent constants (VM, etc) common across MIPS cpus
*/
#include <mips/mips_param.h>
/*
* Machine dependent constants for ARC BIOS MIPS machines:
* Acer Labs PICA_61
* Deskstation rPC44
* Deskstation Tyne
* Etc
*/
#define _MACHINE_ARCH mipsel
#define MACHINE_ARCH "mipsel"
#define _MACHINE arc
#define MACHINE "arc"
#define MID_MACHINE MID_PMAX /* XXX Bogus, but needed for now... */
#define KERNBASE 0x80000000 /* 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
/* XXX Maxphys temporary changed to 32K while SCSI driver is fixed. */
#define MAXPHYS (32 * 1024) /* max raw I/O transfer size */
#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 256 /* size of an mbuf */
#define MCLSHIFT 11
#define MCLBYTES (1 << MCLSHIFT) /* enough for whole Ethernet packet */
#define MCLOFSET (MCLBYTES - 1)
#ifndef NMBCLUSTERS
#if defined(_KERNEL) && !defined(_LKM)
#include "opt_gateway.h"
#endif /* _KERNEL && ! _LKM */
#ifdef GATEWAY
#define NMBCLUSTERS 2048 /* map size, max cluster allocation */
#else
#define NMBCLUSTERS 1024 /* map size, max cluster allocation */
#endif
#endif
/* bytes to disk blocks */
#define btodb(x) ((x) >> DEV_BSHIFT)
#define dbtob(x) ((x) << DEV_BSHIFT)
#ifdef _KERNEL
#ifndef _LOCORE
extern int cpuspeed;
extern void delay __P((int n));
#if 0 /* XXX: should use mips_mcclock.c */
#define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); }
#else
/*
* Delay is based on an assumtion that each time in the loop
* takes 3 clocks. Three is for branch and subtract in the delay slot.
*/
#define DELAY(n) { register int N = cpuspeed * (n); while ((N -= 3) > 0); }
#endif
#include <machine/intr.h>
#endif /* _LOCORE */
#endif /* _KERNEL */
#endif /* _ARC_PARAM_H_ */