/* $NetBSD: param.h,v 1.23.4.1 2020/05/18 18:12:25 martin Exp $ */ /* $OpenBSD: param.h,v 1.12 2001/07/06 02:07:41 provos Exp $ */ /* * Copyright (c) 1988-1994, The University of Utah and * the Computer Systems Laboratory at the University of Utah (CSL). * All rights reserved. * * Permission to use, copy, modify and distribute this software is hereby * granted provided that (1) source code retains these copyright, permission, * and disclaimer notices, and (2) redistributions including binaries * reproduce the notices in supporting documentation, and (3) all advertising * materials mentioning features or use of this software display the following * acknowledgement: ``This product includes software developed by the * Computer Systems Laboratory at the University of Utah.'' * * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * CSL requests users of this software to return to csl-dist@cs.utah.edu any * improvements that they make and grant CSL redistribution rights. * * Utah $Hdr: param.h 1.18 94/12/16$ */ #ifdef _KERNEL #include #endif /* * Machine dependent constants for PA-RISC. */ #define _MACHINE hppa #define MACHINE "hppa" #define _MACHINE_ARCH hppa #define MACHINE_ARCH "hppa" #define MID_MACHINE MID_HPPA #define PGSHIFT 12 /* LOG2(NBPG) */ #define NBPG (1 << PGSHIFT) /* bytes/page */ #define PGOFSET (NBPG-1) /* byte offset into page */ #define SEGSHIFT (PGSHIFT + (PGSHIFT-PTESHIFT)) /* LOG2(NBSEG) */ #define NBSEG (1 << SEGSHIFT) /* bytes/segment (quadrant) */ #define SEGOFSET (NBSEG-1) /* byte offset into segment */ #define KERNBASE 0x00000000 /* start of kernel virtual */ #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) #define SSIZE (1) /* initial stack size/NBPG */ #define SINCR (1) /* increment of stack/NBPG */ #ifdef DIAGNOSTIC #define UPAGES 5 /* pages of u-area + redzone */ #else #define UPAGES 4 /* pages of u-area */ #endif #define USPACE (UPAGES * NBPG) /* pages for user struct and kstack */ #ifndef MSGBUFSIZE #define MSGBUFSIZE (2*NBPG) /* default message buffer size */ #endif /* * Constants related to network buffer management. * MCLBYTES must be no larger than 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 #define MCLBYTES (1 << MCLSHIFT) /* large enough for ether MTU */ #define MCLOFSET (MCLBYTES - 1) /* * Size of kernel malloc arena in logical pages */ #define NKMEMPAGES_MIN_DEFAULT ((16 * 1024 * 1024) >> PAGE_SHIFT) #define NKMEMPAGES_MAX_DEFAULT ((256 * 1024 * 1024) >> PAGE_SHIFT) /* * Mach derived conversion macros */ #define btop(x) ((unsigned long)(x) >> PGSHIFT) #define ptob(x) ((unsigned long)(x) << PGSHIFT) /* Default audio blocksize in msec. See sys/dev/audio/audio.c */ #if defined(_KERNEL) #define __AUDIO_BLK_MS (40) #endif