/* $NetBSD: param.h,v 1.37 1999/02/01 22:20:02 mrg 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 */ /* * Sun4M support by Aaron Brown, Harvard University. * Changes Copyright (c) 1995 The President and Fellows of Harvard College. * All rights reserved. */ #define _MACHINE sparc #define MACHINE "sparc" #define _MACHINE_ARCH sparc #define MACHINE_ARCH "sparc" #define MID_MACHINE MID_SPARC #ifdef _KERNEL /* XXX */ #ifndef _LOCORE /* XXX */ #include /* XXX */ #endif /* 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. * * 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 7 #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) & ~ALIGNBYTES) #define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0) #define SUN4_PGSHIFT 13 /* for a sun4 machine */ #define SUN4CM_PGSHIFT 12 /* for a sun4c or sun4m machine */ /* * The following variables are always defined and initialized (in locore) * so independently compiled modules (e.g. LKMs) can be used irrespective * of the `options SUN4?' combination a particular kernel was configured with. * See also the definitions of NBPG, PGOFSET and PGSHIFT below. */ #if defined(_KERNEL) && !defined(_LOCORE) extern int nbpg, pgofset, pgshift; #endif #define KERNBASE 0xf0000000 /* start of kernel virtual space */ #define KERNTEXTOFF (KERNBASE+0x4000) /* 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 #if defined(_KERNEL) && !defined(_LKM) #include "opt_gateway.h" #endif /* _KERNEL && ! _LKM */ #ifdef GATEWAY #define NMBCLUSTERS 512 /* map size, max cluster allocation */ #else #define NMBCLUSTERS 256 /* map size, max cluster allocation */ #endif #endif #define MSGBUFSIZE 4096 /* * 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 void delay __P((unsigned int)); #define DELAY(n) delay(n) extern int cputyp; #endif /* _LOCORE */ #endif /* _KERNEL */ /* * Values for the cputyp variable. */ #define CPU_SUN4 0 #define CPU_SUN4C 1 #define CPU_SUN4M 2 #define CPU_SUN4U 3 /* * Shorthand CPU-type macros. Enumerate all eight cases. * Let compiler optimize away code conditional on constants. * * On a sun4 machine, the page size is 8192, while on a sun4c and sun4m * it is 4096. Therefore, in the (SUN4 && (SUN4C || SUN4M)) cases below, * NBPG, PGOFSET and PGSHIFT are defined as variables which are initialized * early in locore.s after the machine type has been detected. * * Note that whenever the macros defined below evaluate to expressions * involving variables, the kernel will perform slighly worse due to the * extra memory references they'll generate. */ #if defined(SUN4M) && defined(SUN4C) && defined(SUN4) # define CPU_ISSUN4M (cputyp == CPU_SUN4M) # define CPU_ISSUN4C (cputyp == CPU_SUN4C) # define CPU_ISSUN4 (cputyp == CPU_SUN4) # define CPU_ISSUN4OR4C (cputyp == CPU_SUN4 || cputyp == CPU_SUN4C) # define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M) # define NBPG nbpg # define PGOFSET pgofset # define PGSHIFT pgshift #elif defined(SUN4M) && defined(SUN4C) && !defined(SUN4) # define CPU_ISSUN4M (cputyp == CPU_SUN4M) # define CPU_ISSUN4C (cputyp == CPU_SUN4C) # define CPU_ISSUN4 (0) # define CPU_ISSUN4OR4C (cputyp == CPU_SUN4C) # define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M) # define NBPG 4096 # define PGOFSET (NBPG-1) # define PGSHIFT SUN4CM_PGSHIFT #elif defined(SUN4M) && !defined(SUN4C) && defined(SUN4) # define CPU_ISSUN4M (cputyp == CPU_SUN4M) # define CPU_ISSUN4C (0) # define CPU_ISSUN4 (cputyp == CPU_SUN4) # define CPU_ISSUN4OR4C (cputyp == CPU_SUN4) # define CPU_ISSUN4COR4M (cputyp == CPU_SUN4M) # define NBPG nbpg # define PGOFSET pgofset # define PGSHIFT pgshift #elif defined(SUN4M) && !defined(SUN4C) && !defined(SUN4) # define CPU_ISSUN4M (1) # define CPU_ISSUN4C (0) # define CPU_ISSUN4 (0) # define CPU_ISSUN4OR4C (0) # define CPU_ISSUN4COR4M (1) # define NBPG 4096 # define PGOFSET (NBPG-1) # define PGSHIFT SUN4CM_PGSHIFT #elif !defined(SUN4M) && defined(SUN4C) && defined(SUN4) # define CPU_ISSUN4M (0) # define CPU_ISSUN4C (cputyp == CPU_SUN4C) # define CPU_ISSUN4 (cputyp == CPU_SUN4) # define CPU_ISSUN4OR4C (1) # define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C) # define NBPG nbpg # define PGOFSET pgofset # define PGSHIFT pgshift #elif !defined(SUN4M) && defined(SUN4C) && !defined(SUN4) # define CPU_ISSUN4M (0) # define CPU_ISSUN4C (1) # define CPU_ISSUN4 (0) # define CPU_ISSUN4OR4C (1) # define CPU_ISSUN4COR4M (1) # define NBPG 4096 # define PGOFSET (NBPG-1) # define PGSHIFT SUN4CM_PGSHIFT #elif !defined(SUN4M) && !defined(SUN4C) && defined(SUN4) # define CPU_ISSUN4M (0) # define CPU_ISSUN4C (0) # define CPU_ISSUN4 (1) # define CPU_ISSUN4OR4C (1) # define CPU_ISSUN4COR4M (0) # define NBPG 8192 # define PGOFSET (NBPG-1) # define PGSHIFT SUN4_PGSHIFT #elif !defined(SUN4M) && !defined(SUN4C) && !defined(SUN4) # define CPU_ISSUN4M (cputyp == CPU_SUN4M) # define CPU_ISSUN4C (cputyp == CPU_SUN4C) # define CPU_ISSUN4 (cputyp == CPU_SUN4) # define CPU_ISSUN4OR4C (cputyp == CPU_SUN4 || cputyp == CPU_SUN4C) # define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M) # define NBPG nbpg # define PGOFSET pgofset # define PGSHIFT pgshift #endif