142 lines
4.7 KiB
C
142 lines
4.7 KiB
C
/* $NetBSD: param.h,v 1.1 2002/06/05 01:04:22 fredette Exp $ */
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/* $OpenBSD: param.h,v 1.12 2001/07/06 02:07:41 provos Exp $ */
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/*
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* Copyright (c) 1988-1994, The University of Utah and
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* the Computer Systems Laboratory at the University of Utah (CSL).
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* All rights reserved.
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*
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* Permission to use, copy, modify and distribute this software is hereby
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* granted provided that (1) source code retains these copyright, permission,
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* and disclaimer notices, and (2) redistributions including binaries
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* reproduce the notices in supporting documentation, and (3) all advertising
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* materials mentioning features or use of this software display the following
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* acknowledgement: ``This product includes software developed by the
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* Computer Systems Laboratory at the University of Utah.''
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*
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* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
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* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
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* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* CSL requests users of this software to return to csl-dist@cs.utah.edu any
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* improvements that they make and grant CSL redistribution rights.
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*
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* Utah $Hdr: param.h 1.18 94/12/16$
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*/
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#if !defined(_POSIX_SOURCE) && !defined(_XOPEN_SOURCE)
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#include <machine/cpu.h>
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#endif
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/*
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* Machine dependent constants for PA-RISC.
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*/
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#define _MACHINE_ARCH hppa
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#define MACHINE_ARCH "hppa"
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#define MID_MACHINE MID_HPUX800
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/*
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* Round p (pointer or byte index) up to a correctly-aligned value for all
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* data types (int, long, ...). The result is u_int and must be cast to
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* any desired pointer type.
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*/
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#define ALIGNBYTES 7
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#define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ ALIGNBYTES)
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#define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0)
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#define PAGE_SIZE 4096
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#define PAGE_MASK (PAGE_SIZE-1)
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#define PAGE_SHIFT 12
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#define NBPG 4096 /* bytes/page */
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#define PGOFSET (NBPG-1) /* byte offset into page */
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#define PGSHIFT 12 /* LOG2(NBPG) */
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#define SEGSHIFT (PGSHIFT + (PGSHIFT-PTESHIFT)) /* LOG2(NBSEG) */
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#define NBSEG (1 << SEGSHIFT) /* bytes/segment (quadrant) */
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#define SEGOFSET (NBSEG-1) /* byte offset into segment */
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#define KERNBASE 0x00000000 /* start of kernel virtual */
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#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
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#define DEV_BSIZE 512
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#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
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#define BLKDEV_IOSIZE 2048
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#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
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#define SSIZE (1) /* initial stack size/NBPG */
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#define SINCR (1) /* increment of stack/NBPG */
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#define UADDR 0x7ffe6000 /* u-area lives here */
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#define USHIFT (3) /* log2(UPAGES) */
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#define UPAGES (1<<USHIFT) /* pages of u-area */
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#define USPACE (UPAGES * NBPG) /* pages for user struct and kstack */
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#ifndef MSGBUFSIZE
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#define MSGBUFSIZE 2*NBPG /* default message buffer size */
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#endif
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/*
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* Constants related to network buffer management.
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* MCLBYTES must be no larger than the software page size, and,
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* on machines that exchange pages of input or output buffers with mbuf
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* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
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* of the hardware page size.
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*/
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#define MSIZE 256 /* size of an mbuf */
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#define MCLSHIFT 11
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#define MCLBYTES (1 << MCLSHIFT) /* large enough for ether MTU */
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#define MCLOFSET (MCLBYTES - 1)
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#ifndef NMBCLUSTERS
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#define NMBCLUSTERS (2048) /* cl map size: 1MB */
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#endif
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/*
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* Size of kernel malloc arena in logical pages
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*/
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#define NKMEMPAGES_MIN_DEFAULT ((16 * 1024 * 1024) >> PAGE_SHIFT)
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#define NKMEMPAGES_MAX_DEFAULT ((16 * 1024 * 1024) >> PAGE_SHIFT)
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/* pages ("clicks") (4096 bytes) to disk blocks */
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#define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT))
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#define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT))
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/* pages to bytes */
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#define ctob(x) ((x)<<PGSHIFT)
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#define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT)
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#define btodb(bytes) ((unsigned)(bytes) >> DEV_BSHIFT)
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#define dbtob(db) ((unsigned)(db) << DEV_BSHIFT)
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/*
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* Map a ``block device block'' to a file system block.
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* This should be device dependent, and should use the bsize
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* field from the disk label.
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* For now though just use DEV_BSIZE.
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*/
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#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
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/*
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* Mach derived conversion macros
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*/
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#define hppa_round_page(x) ((((unsigned long)(x)) + NBPG - 1) & ~(NBPG-1))
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#define hppa_trunc_page(x) ((unsigned long)(x) & ~(NBPG-1))
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#define btop(x) ((unsigned long)(x) >> PGSHIFT)
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#define ptob(x) ((unsigned long)(x) << PGSHIFT)
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#ifdef _KERNEL
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#ifdef COMPAT_HPUX
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/*
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* Constants/macros for HPUX multiple mapping of user address space.
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* Pages in the first 256Mb are mapped in at every 256Mb segment.
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*/
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#define HPMMMASK 0xF0000000
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#define ISHPMMADDR(v) 0 /* XXX ...jef */
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#define HPMMBASEADDR(v) ((unsigned)(v) & ~HPMMMASK)
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#endif
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#endif
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