/* $OpenBSD: param.h,v 1.37 2007/09/22 09:57:40 martin 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 $Hdr: param.h 1.18 94/12/16$ */ #include #include /* * Machine dependent constants for PA-RISC. */ #define _MACHINE hppa #define MACHINE "hppa" #define _MACHINE_ARCH hppa #define MACHINE_ARCH "hppa" #define MID_MACHINE MID_HPUX800 /* * Round p (pointer or byte index) up to a correctly-aligned value for all * data types (int, long, ...). The result is u_int and must be cast to * any desired pointer type. */ #define ALIGNBYTES 7 #define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ ALIGNBYTES) #define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0) #define PAGE_SIZE 4096 #define PAGE_MASK (PAGE_SIZE-1) #define PAGE_SHIFT 12 #define NBPG 4096 /* bytes/page */ #define PGOFSET (NBPG-1) /* byte offset into page */ #define PGSHIFT 12 /* LOG2(NBPG) */ #define KERNBASE 0x00000000 /* start of kernel virtual */ #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ #define DEV_BSIZE (1 << DEV_BSHIFT) #define BLKDEV_IOSIZE 2048 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ #define MACHINE_STACK_GROWS_UP 1 /* stack grows to higher addresses */ #define USPACE (4 * NBPG) /* pages for user struct and kstack */ #define USPACE_ALIGN (0) /* u-area alignment 0-none */ #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) #define NMBCLUSTERS 4096 /* map size, max cluster allocation */ /* * 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 ((128 * 1024 * 1024) >> PAGE_SHIFT) /* pages ("clicks") (4096 bytes) to disk blocks */ #define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) #define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) #define btodb(x) ((x) >> DEV_BSHIFT) #define dbtob(x) ((x) << DEV_BSHIFT) #ifdef _KERNEL #ifdef COMPAT_HPUX /* * Constants/macros for HPUX multiple mapping of user address space. * Pages in the first 256Mb are mapped in at every 256Mb segment. */ #define HPMMMASK 0xF0000000 #define ISHPMMADDR(v) 0 /* XXX ...jef */ #define HPMMBASEADDR(v) ((unsigned)(v) & ~HPMMMASK) #endif #endif #define __SWAP_BROKEN