154 lines
5.3 KiB
C
154 lines
5.3 KiB
C
/* $NetBSD: param.h,v 1.7 2000/12/29 23:07:30 bjh21 Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994,1995 Mark Brinicombe.
|
|
* All rights reserved.
|
|
*
|
|
* 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 RiscBSD team.
|
|
* 4. The name "RiscBSD" nor the name of the author may be used to
|
|
* endorse or promote products derived from this software without specific
|
|
* prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY RISCBSD ``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 RISCBSD 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.
|
|
*/
|
|
|
|
#ifndef _ARM26_PARAM_H_
|
|
#define _ARM26_PARAM_H_
|
|
|
|
#ifdef _KERNEL
|
|
#include <machine/cpu.h> /* XXX why? */
|
|
#include <machine/intr.h> /* XXX for spl(9) */
|
|
#endif
|
|
|
|
#define _MACHINE arm26
|
|
#define MACHINE "arm26"
|
|
#define _MACHINE_ARCH arm26
|
|
#define MACHINE_ARCH "arm26"
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
* ALIGNED_POINTER is a boolean macro that checks whether an address
|
|
* is valid to fetch data elements of type t from on this architecture.
|
|
* This does not reflect the optimal alignment, just the possibility
|
|
* (within reasonable limits).
|
|
*
|
|
*/
|
|
#define ALIGNBYTES (sizeof(int) - 1)
|
|
#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
|
|
#define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
|
|
|
|
#define PGSHIFT 15 /* LOG2(NBPG) */
|
|
#define NBPG (1 << PGSHIFT) /* bytes/page */
|
|
#define PGOFSET (NBPG-1) /* byte offset into page */
|
|
|
|
#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 1 /* pages of u-area */
|
|
#define USPACE (UPAGES * NBPG) /* total size of u-area */
|
|
|
|
#ifndef MSGBUFSIZE
|
|
#define MSGBUFSIZE NBPG /* default message buffer size */
|
|
#endif
|
|
|
|
/*
|
|
* Constants related to network buffer management.
|
|
* MCLBYTES must be no larger than NBPG (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 /* 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
|
|
|
|
/*
|
|
* Defaults for lower- and upper-bounds for the kmem_map page count.
|
|
* Can be overridden by kernel config options.
|
|
*/
|
|
#define NKMEMPAGES_MIN_DEFAULT 0
|
|
#define NKMEMPAGES_MAX_DEFAULT 32
|
|
|
|
/*
|
|
* Reduce UBC KVM usage from its default (8Mb when I looked).
|
|
* Also make sure the window size is at least the page size.
|
|
*/
|
|
#ifndef UBC_WINSIZE
|
|
#define UBC_WINSIZE NBPG
|
|
#endif
|
|
#ifndef UBC_NWINS
|
|
#define UBC_NWINS 32
|
|
#endif
|
|
|
|
/* pages ("clicks") to disk blocks */
|
|
#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
|
|
#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
|
|
/*#define dtob(x) ((x) << DEV_BSHIFT)*/
|
|
|
|
#define ctob(x) ((x) << PGSHIFT)
|
|
|
|
/* bytes to pages */
|
|
#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
|
|
|
|
#define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \
|
|
((bytes) >> DEV_BSHIFT)
|
|
#define dbtob(db) /* calculates (db * DEV_BSIZE) */ \
|
|
((db) << 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))
|
|
|
|
#ifdef _KERNEL
|
|
#ifndef _LOCORE
|
|
void delay __P((unsigned));
|
|
#define DELAY(x) delay(x)
|
|
#endif
|
|
#endif
|
|
|
|
#endif /* _ARM_PARAM_H_ */
|