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).
174 lines
5.7 KiB
C
174 lines
5.7 KiB
C
/* $NetBSD: param.h,v 1.48 2002/02/26 15:13:27 simonb Exp $ */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* 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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* William Jolitz.
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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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* @(#)param.h 5.8 (Berkeley) 6/28/91
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*/
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#ifndef _VAX_PARAM_H_
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#define _VAX_PARAM_H_
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/*
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* Machine dependent constants for VAX.
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*/
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#define _MACHINE vax
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#define MACHINE "vax"
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#define _MACHINE_ARCH vax
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#define MACHINE_ARCH "vax"
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#define MID_MACHINE MID_VAX
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/*
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* Round p (pointer or byte index) up to a correctly-aligned value
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* for all data types (int, long, ...). The result is u_int and
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* must be cast to any desired pointer type.
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*
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* ALIGNED_POINTER is a boolean macro that checks whether an address
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* is valid to fetch data elements of type t from on this architecture.
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* This does not reflect the optimal alignment, just the possibility
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* (within reasonable limits).
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*
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*/
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#define ALIGNBYTES (sizeof(int) - 1)
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#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
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#define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
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#define PGSHIFT 12 /* LOG2(NBPG) */
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#define NBPG (1 << PGSHIFT) /* (1 << PGSHIFT) bytes/page */
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#define PGOFSET (NBPG - 1) /* byte offset into page */
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#define VAX_PGSHIFT 9
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#define VAX_NBPG (1 << VAX_PGSHIFT)
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#define VAX_PGOFSET (VAX_NBPG - 1)
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#define VAX_NPTEPG (VAX_NBPG / 4)
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#define KERNBASE 0x80000000 /* start of kernel virtual */
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#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
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#define DEV_BSIZE (1 << DEV_BSHIFT)
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#define BLKDEV_IOSIZE 2048
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#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
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#define MAXBSIZE 0x4000 /* max FS block size - XXX */
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#define UPAGES 2 /* pages of u-area */
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#define USPACE (NBPG*UPAGES)
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#define REDZONEADDR (VAX_NBPG*3) /* Must be > sizeof(struct user) */
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#ifndef MSGBUFSIZE
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#define MSGBUFSIZE NBPG /* default message buffer size */
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#endif
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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 512 /* map size, max cluster allocation */
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#else
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#define NMBCLUSTERS 256 /* map size, max cluster allocation */
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#endif
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#endif
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/*
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* Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
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* logical pages.
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*/
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#define NKMEMPAGES_MIN_DEFAULT ((4 * 1024 * 1024) >> PAGE_SHIFT)
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#define NKMEMPAGES_MAX_DEFAULT ((4 * 1024 * 1024) >> PAGE_SHIFT)
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/*
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* Some macros for units conversion
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*/
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/* pages ("clicks") to disk blocks */
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#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
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#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
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/* clicks to bytes */
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#define ctob(x) ((x) << PGSHIFT)
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#define btoc(x) (((unsigned)(x) + PGOFSET) >> PGSHIFT)
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#define btop(x) (((unsigned)(x)) >> PGSHIFT)
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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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/* MD conversion macros */
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#define vax_btoc(x) (((unsigned)(x) + VAX_PGOFSET) >> VAX_PGSHIFT)
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#define vax_btop(x) (((unsigned)(x)) >> VAX_PGSHIFT)
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/*
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* Map a ``block device block'' to a file system block.
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* This should be device dependent, and will be if we
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* add an entry to cdevsw/bdevsw for that purpose.
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* For now though just use DEV_BSIZE.
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*/
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#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
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#ifdef _KERNEL
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#include <machine/intr.h>
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/* Prototype needed for delay() */
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#ifndef _LOCORE
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void delay __P((int));
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/* inline macros used inside kernel */
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#include <machine/macros.h>
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#endif
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#define DELAY(x) delay(x)
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#endif /* _KERNEL */
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#endif /* _VAX_PARAM_H_ */
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