18ec26aa21
execpt without quotes. meant to be __CONCAT()ted for easy #includes of machine-dependent headers for MI code (e.g. for the MI ISA/EISA/PCI/TC bus code).
149 lines
5.3 KiB
C
149 lines
5.3 KiB
C
/* $NetBSD: param.h,v 1.29 1996/03/04 05:04:26 cgd Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* William Jolitz.
|
|
*
|
|
* 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.
|
|
*
|
|
* @(#)param.h 5.8 (Berkeley) 6/28/91
|
|
*/
|
|
|
|
/*
|
|
* Machine dependent constants for Intel 386.
|
|
*/
|
|
|
|
#ifdef _KERNEL
|
|
#ifdef _LOCORE
|
|
#include <machine/psl.h>
|
|
#else
|
|
#include <machine/cpu.h>
|
|
#endif
|
|
#endif
|
|
|
|
#define _MACHINE i386
|
|
#define MACHINE "i386"
|
|
#define _MACHINE_ARCH i386
|
|
#define MACHINE_ARCH "i386"
|
|
#define MID_MACHINE MID_I386
|
|
|
|
/*
|
|
* Round p (pointer or byte index) up to a correctly-aligned value
|
|
* for all data types (int, long, ...). The result is u_int and
|
|
* must be cast to any desired pointer type.
|
|
*/
|
|
#define ALIGNBYTES (sizeof(int) - 1)
|
|
#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
|
|
|
|
#define PGSHIFT 12 /* LOG2(NBPG) */
|
|
#define NBPG (1 << PGSHIFT) /* bytes/page */
|
|
#define PGOFSET (NBPG-1) /* byte offset into page */
|
|
#define NPTEPG (NBPG/(sizeof (pt_entry_t)))
|
|
|
|
#define KERNBASE 0xf8000000 /* start of kernel virtual space */
|
|
#define KERNSIZE 0x01800000 /* size of kernel virtual space */
|
|
#define KERNTEXTOFF 0xf8100000 /* start of kernel text */
|
|
#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
|
|
|
|
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
|
|
#define DEV_BSIZE (1 << DEV_BSHIFT)
|
|
#define BLKDEV_IOSIZE 2048
|
|
#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
|
|
|
|
#define CLSIZELOG2 0
|
|
#define CLSIZE (1 << CLSIZELOG2)
|
|
|
|
/* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */
|
|
#define SSIZE 1 /* initial stack size/NBPG */
|
|
#define SINCR 1 /* increment of stack/NBPG */
|
|
#define UPAGES 2 /* pages of u-area */
|
|
#define USPACE (UPAGES * NBPG) /* total size of u-area */
|
|
|
|
/*
|
|
* 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 128 /* size of an mbuf */
|
|
#define MCLSHIFT 11 /* convert bytes to m_buf clusters */
|
|
#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */
|
|
#define MCLOFSET (MCLBYTES - 1) /* offset within a m_buf cluster */
|
|
|
|
#ifndef NMBCLUSTERS
|
|
#ifdef GATEWAY
|
|
#define NMBCLUSTERS 512 /* map size, max cluster allocation */
|
|
#else
|
|
#define NMBCLUSTERS 256 /* map size, max cluster allocation */
|
|
#endif
|
|
#endif
|
|
|
|
/*
|
|
* Size of kernel malloc arena in CLBYTES-sized logical pages
|
|
*/
|
|
#ifndef NKMEMCLUSTERS
|
|
#define NKMEMCLUSTERS (6 * 1024 * 1024 / CLBYTES)
|
|
#endif
|
|
|
|
/* pages ("clicks") to disk blocks */
|
|
#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
|
|
#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
|
|
|
|
/* bytes to pages */
|
|
#define ctob(x) ((x) << PGSHIFT)
|
|
#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
|
|
|
|
/* bytes to disk blocks */
|
|
#define dbtob(x) ((x) << DEV_BSHIFT)
|
|
#define btodb(x) ((x) >> DEV_BSHIFT)
|
|
|
|
/*
|
|
* Map a ``block device block'' to a file system block.
|
|
* This should be device dependent, and should use the bsize
|
|
* field from the disk label.
|
|
* For now though just use DEV_BSIZE.
|
|
*/
|
|
#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE / DEV_BSIZE))
|
|
|
|
/*
|
|
* Mach derived conversion macros
|
|
*/
|
|
#define i386_round_pdr(x) ((((unsigned)(x)) + PDOFSET) & ~PDOFSET)
|
|
#define i386_trunc_pdr(x) ((unsigned)(x) & ~PDOFSET)
|
|
#define i386_btod(x) ((unsigned)(x) >> PDSHIFT)
|
|
#define i386_dtob(x) ((unsigned)(x) << PDSHIFT)
|
|
#define i386_round_page(x) ((((unsigned)(x)) + PGOFSET) & ~PGOFSET)
|
|
#define i386_trunc_page(x) ((unsigned)(x) & ~PGOFSET)
|
|
#define i386_btop(x) ((unsigned)(x) >> PGSHIFT)
|
|
#define i386_ptob(x) ((unsigned)(x) << PGSHIFT)
|