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/* $NetBSD: param.h,v 1.16 1995/06/28 02:43:50 cgd Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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, Lawrence Berkeley Laboratory.
*
* 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 8.1 (Berkeley) 6/11/93
*/
/*
* Machine dependent constants for Sun-4c (SPARCstation)
*/
#define MACHINE "sparc"
#define MACHINE_ARCH "sparc"
#define MID_MACHINE MID_SPARC
#ifdef _KERNEL /* XXX */
#include <machine/cpu.h> /* XXX */
#endif /* XXX */
/*
* Round p (pointer or byte index) up to a correctly-aligned value for
* the machine's strictest data type. The result is u_int and must be
* cast to any desired pointer type.
*/
#define ALIGNBYTES 7
#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) & ~ALIGNBYTES)
#define SUN4_PGSHIFT 13 /* for a sun4 machine */
#define SUN4CM_PGSHIFT 12 /* for a sun4c or sun4m machine */
/*
* Three possible cases:
* sun4 only 8192 bytes/page
* sun4c/sun4m only 4096 bytes/page
* sun4/sun4c/sun4m either of the above
*
* In the later case NBPG, PGOFSET, and PGSHIFT are encoded in variables
* initialized early in locore.s. Since they are variables, rather than
* simple constants, the kernel will not perform slighly worse.
*/
#if defined(SUN4) && !defined(SUN4C) && !defined(SUN4M)
#define NBPG 8192 /* bytes/page */
#define PGOFSET (NBPG-1) /* byte offset into page */
#define PGSHIFT SUN4_PGSHIFT /* log2(NBPG) */
#endif
#if !defined(SUN4) && (defined(SUN4C) || defined(SUN4M))
#define NBPG 4096 /* bytes/page */
#define PGOFSET (NBPG-1) /* byte offset into page */
#define PGSHIFT SUN4CM_PGSHIFT /* log2(NBPG) */
#endif
#if defined(SUN4) && (defined(SUN4C) || defined(SUN4M))
#if defined(_KERNEL) && !defined(LOCORE)
extern int nbpg, pgofset, pgshift;
#endif
#define NBPG nbpg /* bytes/page */
#define PGOFSET pgofset /* byte offset into page */
#define PGSHIFT pgshift /* log2(NBPG) */
#endif
#define KERNBASE 0xf8000000 /* start of kernel virtual space */
#define KERNTEXTOFF 0xf8004000 /* start of kernel text */
#define DEV_BSIZE 512
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
#define BLKDEV_IOSIZE 2048
#define MAXPHYS (64 * 1024)
#define CLSIZE 1
#define CLSIZELOG2 0
/* NOTE: SSIZE must be multiple of CLSIZE */
#define SSIZE 1 /* initial stack size in pages */
#define USPACE 8192
/*
* 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 MCLBYTES 2048 /* enough for whole Ethernet packet */
#define MCLSHIFT 11 /* log2(MCLBYTES) */
#define MCLOFSET (MCLBYTES - 1)
#ifndef NMBCLUSTERS
#ifdef GATEWAY
#define NMBCLUSTERS 2048 /* map size, max cluster allocation */
#else
#define NMBCLUSTERS 1024 /* 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))
/* pages to bytes */
#define ctob(x) ((x) << PGSHIFT)
#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
/* bytes to disk blocks */
#define btodb(x) ((x) >> DEV_BSHIFT)
#define dbtob(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))
/*
* dvmamap manages a range of DVMA addresses intended to create double
* mappings of physical memory. In a way, `dvmamap' is a submap of the
* VM map `phys_map'. The difference is the use of the `resource map'
* routines to manage page allocation, allowing DVMA addresses to be
* allocated and freed from within interrupt routines.
*
* Note that `phys_map' can still be used to allocate memory-backed pages
* in DVMA space.
*/
#ifdef _KERNEL
#ifndef LOCORE
extern vm_offset_t dvma_base;
extern vm_offset_t dvma_end;
extern struct map *dvmamap;
#endif
/*
* The dvma resource map is defined in page units, which are numbered 1 to N.
* Use these macros to convert to/from virtual addresses.
*/
#define rctov(n) (ctob(((n)-1))+dvma_base)
#define vtorc(v) ((btoc((v)-dvma_base))+1)
extern caddr_t kdvma_mapin __P((caddr_t, int, int));
extern caddr_t dvma_malloc __P((size_t, void *, int));
extern void dvma_free __P((caddr_t, size_t, void *));
#endif
#ifdef _KERNEL
#ifndef LOCORE
#define DELAY(n) delay(n)
#endif
#endif
#ifdef _KERNEL
#ifndef LOCORE
extern int cputyp;
extern int cpumod;
#endif
#endif
/*
* Values for the cputyp variable.
*/
#define CPU_SUN4 0
#define CPU_SUN4C 1
#define CPU_SUN4M 2
/*
* Values for cpumod (cpu model) variable. XXX currently valid only for sun4
*/
#define SUN4_100 0x22
#define SUN4_200 0x21
#define SUN4_300 0x23
#define SUN4_400 0x24
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