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/* $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 $Hdr: param.h 1.18 94/12/16$
*/
#include <machine/cpu.h>
#include <machine/intr.h>
/*
* 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 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 DEV_BSIZE 512
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
#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 SSIZE (1) /* initial stack size/NBPG */
#define SINCR (1) /* increment of stack/NBPG */
#define UADDR 0x7ffe6000 /* u-area lives here */
#define USHIFT (3) /* log2(UPAGES) */
#define UPAGES (1<<USHIFT) /* pages of u-area */
#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)
#ifndef NMBCLUSTERS
#define NMBCLUSTERS (2048) /* cl map size: 1MB */
#endif
/*
* Size of kernel malloc arena in logical pages
*/
#ifndef NKMEMCLUSTERS
#define NKMEMCLUSTERS (16 * 1024 * 1024 / PAGE_SIZE)
#endif
/* pages ("clicks") (4096 bytes) 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) (((unsigned)(x)+(NBPG-1))>>PGSHIFT)
#define btodb(bytes) ((unsigned)(bytes) >> DEV_BSHIFT)
#define dbtob(db) ((unsigned)(db) << 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))
/*
* Mach derived conversion macros
*/
#define hppa_round_page(x) ((((unsigned long)(x)) + NBPG - 1) & ~(NBPG-1))
#define hppa_trunc_page(x) ((unsigned long)(x) & ~(NBPG-1))
#define btop(x) ((unsigned long)(x) >> PGSHIFT)
#define ptob(x) ((unsigned long)(x) << PGSHIFT)
#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
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