d9ab16ba2f
Be consistant in the way that MSIZE, MCLSHIFT, MCLBYTES and NMBCLUSTERS are defined. Remove old VM constants from cesfic port. Bump MSIZE to 256 on mipsco (the only one that wasn't already 256).
142 lines
4.9 KiB
C
142 lines
4.9 KiB
C
/* $NetBSD: param.h,v 1.16 2002/02/26 15:13:20 simonb Exp $ */
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/* $OpenBSD: param.h,v 1.9 1997/04/30 09:54:15 niklas Exp $ */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department and Ralph Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah Hdr: machparam.h 1.11 89/08/14
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* from: @(#)param.h 8.1 (Berkeley) 6/10/93
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*/
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#ifndef _ARC_PARAM_H_
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#define _ARC_PARAM_H_
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/*
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* Machine-dependent constants (VM, etc) common across MIPS cpus
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*/
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#include <mips/mips_param.h>
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/*
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* Machine dependent constants for ARC BIOS MIPS machines:
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* Acer Labs PICA_61
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* Deskstation rPC44
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* Deskstation Tyne
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* Etc
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*/
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#define _MACHINE_ARCH mipsel
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#define MACHINE_ARCH "mipsel"
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#define _MACHINE arc
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#define MACHINE "arc"
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#define MID_MACHINE MID_PMAX /* XXX Bogus, but needed for now... */
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#define KERNBASE 0x80000000 /* start of kernel virtual */
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#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
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#define DEV_BSIZE 512
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#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
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#define BLKDEV_IOSIZE 2048
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/* XXX Maxphys temporary changed to 32K while SCSI driver is fixed. */
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#define MAXPHYS (32 * 1024) /* max raw I/O transfer size */
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#define SSIZE 1 /* initial stack size/NBPG */
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#define SINCR 1 /* increment of stack/NBPG */
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#define UPAGES 2 /* pages of u-area */
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#if defined(_LOCORE) && defined(notyet)
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#define UADDR 0xffffffffffffc000 /* address of u */
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#else
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#define UADDR 0xffffc000 /* address of u */
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#endif
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#define USPACE (UPAGES*NBPG) /* size of u-area in bytes */
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#define UVPN (UADDR>>PGSHIFT)/* virtual page number of u */
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#define KERNELSTACK (UADDR+UPAGES*NBPG) /* top of kernel stack */
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/*
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* Constants related to network buffer management.
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* MCLBYTES must be no larger than NBPG (the software page size), and,
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* on machines that exchange pages of input or output buffers with mbuf
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* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
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* of the hardware page size.
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*/
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#define MSIZE 256 /* size of an mbuf */
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#ifndef MCLSHIFT
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#define MCLSHIFT 11 /* convert bytes to m_buf clusters */
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/* 2K cluster can hold Ether frame */
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#endif /* MCLSHIFT */
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#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */
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#ifndef NMBCLUSTERS
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#if defined(_KERNEL_OPT)
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#include "opt_gateway.h"
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#endif
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#ifdef GATEWAY
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#define NMBCLUSTERS 2048 /* map size, max cluster allocation */
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#else
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#define NMBCLUSTERS 1024 /* map size, max cluster allocation */
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#endif
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#endif
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/* bytes to disk blocks */
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#define btodb(x) ((x) >> DEV_BSHIFT)
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#define dbtob(x) ((x) << DEV_BSHIFT)
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#ifdef _KERNEL
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#ifndef _LOCORE
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extern int cpuspeed;
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extern void delay __P((int n));
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#if 0 /* XXX: should use mips_mcclock.c */
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#define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); }
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#else
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/*
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* Delay is based on an assumtion that each time in the loop
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* takes 3 clocks. Three is for branch and subtract in the delay slot.
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*/
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#define DELAY(n) { register int N = cpuspeed * (n); while ((N -= 3) > 0); }
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#endif
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#include <machine/intr.h>
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#endif /* _LOCORE */
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#endif /* _KERNEL */
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#endif /* _ARC_PARAM_H_ */
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