/* $NetBSD: param.h,v 1.64 2021/05/31 14:38:56 simonb 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. 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 */ #ifndef _VAX_PARAM_H_ #define _VAX_PARAM_H_ #ifdef _KERNEL_OPT #include "opt_param.h" #endif /* * Machine dependent constants for VAX. */ #define _MACHINE vax #define MACHINE "vax" #define _MACHINE_ARCH vax #define MACHINE_ARCH "vax" #define MID_MACHINE MID_VAX #define PGSHIFT 12 /* LOG2(NBPG) */ #define NBPG (1 << PGSHIFT) /* (1 << PGSHIFT) bytes/page */ #define PGOFSET (NBPG - 1) /* byte offset into page */ #define VAX_PGSHIFT 9 #define VAX_NBPG (1 << VAX_PGSHIFT) #define VAX_PGOFSET (VAX_NBPG - 1) #define VAX_NPTEPG (VAX_NBPG / 4) #define KERNBASE 0x80000000 /* start of kernel virtual */ #define UPAGES 2 /* pages of u-area */ #define USPACE (NBPG*UPAGES) #define REDZONEADDR (VAX_NBPG*3) /* Must be > sizeof(struct pcb) */ #ifndef MSGBUFSIZE #define MSGBUFSIZE NBPG /* default message buffer size */ #endif /* * KVA is very tight on vax, reduce the amount of KVA used by pipe * "direct" write code to reasonably low value. */ #ifndef PIPE_DIRECT_CHUNK #define PIPE_DIRECT_CHUNK 65536 #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 */ #ifndef MCLSHIFT #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ /* 2K cluster can hold Ether frame */ #endif /* MCLSHIFT */ #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ /* * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized * logical pages. */ #define NKMEMPAGES_MIN_DEFAULT ((4 * 1024 * 1024) >> PAGE_SHIFT) #define NKMEMPAGES_MAX_DEFAULT ((4 * 1024 * 1024) >> PAGE_SHIFT) /* * Some macros for units conversion */ #define btop(x) ((x) >> PGSHIFT) /* MD conversion macros */ #define vax_btoc(x) (((unsigned)(x) + VAX_PGOFSET) >> VAX_PGSHIFT) #define vax_btop(x) (((unsigned)(x)) >> VAX_PGSHIFT) #ifdef _KERNEL #include <machine/intr.h> /* Prototype needed for delay() */ #ifndef _LOCORE void delay(int); /* inline macros used inside kernel */ #include <machine/macros.h> #endif #define DELAY(x) delay(x) #define MAXEXEC 1 /* Default audio blocksize in msec. See sys/dev/audio/audio.c */ #define __AUDIO_BLK_MS (40) #endif /* _KERNEL */ #endif /* _VAX_PARAM_H_ */
