--- /dev/null
+/*
+ * 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_
+
+#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 /* _ARM_PARAM_H_ */
projects / apple / xnu.git / blobdiff