/* $NetBSD: param.h,v 1.12 1995/03/18 07:23:49 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 /* 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 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") (4096 bytes) to disk blocks */ #define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) #define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) #define dtob(x) ((x) << DEV_BSHIFT) /* pages to bytes */ #define ctob(x) ((x) << PGSHIFT) /* bytes to pages */ #define btoc(x) (((unsigned)(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 #define DELAY(n) delay(n) #endif #else #define DELAY(n) { register volatile int N = (n); while (--N > 0); } #endif #ifdef KERNEL extern int cputyp; extern int cpumod; #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