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/*
* Copyright (c) 2000-2010 Apple Inc. All rights reserved.
*/
/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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 8.1 (Berkeley) 4/4/95
*/
/*
* Machine dependent constants for ARM
*/
#ifndef _ARM_PARAM_H_
#define _ARM_PARAM_H_
#if defined (__arm__) || defined (__arm64__)
#include <arm/_param.h>
/*
* Round p (pointer or byte index) up to a correctly-aligned value for all
* data types (int, long, ...). The result is unsigned int and must be
* cast to any desired pointer type.
*/
#define ALIGNBYTES __DARWIN_ALIGNBYTES
#define ALIGN(p) __DARWIN_ALIGN(p)
#define NBPG 4096 /* bytes/page */
#define PGOFSET (NBPG-1) /* byte offset into page */
#define PGSHIFT 12 /* LOG2(NBPG) */
#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 CLSIZE 1
#define CLSIZELOG2 0
/*
* Constants related to network buffer management.
* MCLBYTES must be no larger than CLBYTES (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 MSIZESHIFT 8 /* 256 */
#define MSIZE (1 << MSIZESHIFT) /* size of an mbuf */
#define MCLSHIFT 11 /* 2048 */
#define MCLBYTES (1 << MCLSHIFT) /* size of an mbuf cluster */
#define MBIGCLSHIFT 12 /* 4096 */
#define MBIGCLBYTES (1 << MBIGCLSHIFT) /* size of a big cluster */
#define M16KCLSHIFT 14 /* 16384 */
#define M16KCLBYTES (1 << M16KCLSHIFT) /* size of a jumbo cluster */
#define MCLOFSET (MCLBYTES - 1)
#ifndef NMBCLUSTERS
#define NMBCLUSTERS CONFIG_NMBCLUSTERS /* cl map size */
#endif
/*
* Some macros for units conversion
*/
/* Core clicks (NeXT_page_size bytes) to segments and vice versa */
#define ctos(x) (x)
#define stoc(x) (x)
/* Core clicks (4096 bytes) to disk blocks */
#define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT))
#define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT))
#define dtob(x) ((x)<<DEV_BSHIFT)
/* clicks to bytes */
#define ctob(x) ((x)<<PGSHIFT)
/* bytes to clicks */
#define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT)
#ifdef __APPLE__
#define btodb(bytes, devBlockSize) \
((unsigned)(bytes) / devBlockSize)
#define dbtob(db, devBlockSize) \
((unsigned)(db) * devBlockSize)
#else
#define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \
((unsigned)(bytes) >> DEV_BSHIFT)
#define dbtob(db) /* calculates (db * DEV_BSIZE) */ \
((unsigned)(db) << DEV_BSHIFT)
#endif
/*
* Map a ``block device block'' to a file system block.
* This should be device dependent, and will be if we
* add an entry to cdevsw/bdevsw for that purpose.
* For now though just use DEV_BSIZE.
*/
#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
/*
* Macros to decode (and encode) processor status word.
*/
#define STATUS_WORD(rpl, ipl) (((ipl) << 8) | (rpl))
#define USERMODE(x) (((x) & 3) == 3)
#define BASEPRI(x) (((x) & (255 << 8)) == 0)
#if defined(KERNEL) || defined(STANDALONE)
#define DELAY(n) delay(n)
#else /* defined(KERNEL) || defined(STANDALONE) */
#define DELAY(n) { int N = (n); while (--N > 0); }
#endif /* defined(KERNEL) || defined(STANDALONE) */
#endif /* defined (__arm__) || defined (__arm64__) */
#endif /* _ARM_PARAM_H_ */
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