FreeBSD compatibility for RTEMS <sys/param.h>
Update the RTEMS <machine/param.h> and <sys/param.h> to be compatible with the latest FreeBSD version. Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
This commit is contained in:
Sebastian Huber
Jeff Johnston
parent
15b59a15b4
commit
2efb117047
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@ -1,94 +1,85 @@
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/*
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* $Id$
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)param.h 5.8 (Berkeley) 6/28/91
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*/
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#ifndef _MACHINE_PARAM_H_
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#define _MACHINE_PARAM_H_
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/*
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* These aren't really machine-dependent for RTEMS.....
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* Machine dependent constants for RTEMS.
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*/
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/*
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#define MACHINE "i386"
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#define MID_MACHINE MID_I386
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*/
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#include <machine/_align.h>
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#define ALIGNBYTES _ALIGNBYTES
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#define ALIGN(p) _ALIGN(p)
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#define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */
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#define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */
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#define PAGE_MASK (PAGE_SIZE-1)
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#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
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#define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t)))
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#define PDRSHIFT 22 /* LOG2(NBPDR) */
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#define NBPDR (1<<PDRSHIFT) /* bytes/page dir */
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#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
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#define DEV_BSIZE (1<<DEV_BSHIFT)
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#if defined(__AVR__) || defined(__h8300__)
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#define BLKDEV_IOSIZE 1024
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#define MAXPHYS (1 * 1024) /* max raw I/O transfer size */
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#else
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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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#ifndef MAXCPU
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#define MAXCPU 32
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#endif
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#define UPAGES 2 /* pages of u-area */
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#ifndef MAXMEMDOM
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#define MAXMEMDOM 1
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#endif
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#define ALIGNBYTES _ALIGNBYTES
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#define ALIGN(p) _ALIGN(p)
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/*
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* ALIGNED_POINTER is a boolean macro that checks whether an address
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* is valid to fetch data elements of type t from on this architecture.
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* This does not reflect the optimal alignment, just the possibility
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* (within reasonable limits).
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*/
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#define ALIGNED_POINTER(p, t) ((((unsigned long)(p)) & (sizeof(t) - 1)) == 0)
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/*
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* Constants related to network buffer management.
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* MCLBYTES must be no larger than CLBYTES (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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* CACHE_LINE_SIZE is the compile-time maximum cache line size for an
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* architecture. It should be used with appropriate caution.
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*/
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#ifndef MSIZE
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#define MSIZE 128 /* size of an mbuf */
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#endif /* MSIZE */
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#ifndef CACHE_LINE_SHIFT
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#define CACHE_LINE_SHIFT 6
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#endif
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#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
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#ifndef MCLSHIFT
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#define MCLSHIFT 11 /* convert bytes to m_buf clusters */
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#endif /* MCLSHIFT */
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#define MCLBYTES (1 << MCLSHIFT) /* size of an m_buf cluster */
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#define MCLOFSET (MCLBYTES - 1) /* offset within an m_buf cluster */
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#define PAGE_SHIFT 12
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#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */
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#define PAGE_MASK (PAGE_SIZE - 1)
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/*
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* Some macros for units conversion
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*/
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/* clicks to bytes */
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#define ctob(x) ((x)<<PAGE_SHIFT)
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/* bytes to clicks */
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#define btoc(x) (((unsigned)(x)+PAGE_MASK)>>PAGE_SHIFT)
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/*
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* btodb() is messy and perhaps slow because `bytes' may be an off_t. We
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* want to shift an unsigned type to avoid sign extension and we don't
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* want to widen `bytes' unnecessarily. Assume that the result fits in
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* a daddr_t.
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*/
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#define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \
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(sizeof (bytes) > sizeof(long) \
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? (daddr_t)((unsigned long long)(bytes) >> DEV_BSHIFT) \
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: (daddr_t)((unsigned long)(bytes) >> DEV_BSHIFT))
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#define dbtob(db) /* calculates (db * DEV_BSIZE) */ \
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((off_t)(db) << DEV_BSHIFT)
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#define MAXPAGESIZES 1 /* maximum number of supported page sizes */
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/*
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* Mach derived conversion macros
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*/
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#define trunc_page(x) ((unsigned)(x) & ~PAGE_MASK)
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#define round_page(x) ((((unsigned)(x)) + PAGE_MASK) & ~PAGE_MASK)
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#define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK)
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#define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK)
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#define atop(x) ((unsigned)(x) >> PAGE_SHIFT)
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#define ptoa(x) ((unsigned)(x) << PAGE_SHIFT)
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#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
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#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
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#define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024))
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#endif /* !_MACHINE_PARAM_H_ */
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@ -15,7 +15,7 @@
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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@ -32,29 +32,16 @@
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* SUCH DAMAGE.
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*
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* @(#)param.h 8.3 (Berkeley) 4/4/95
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* $Id$
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* $FreeBSD: head/sys/sys/param.h 317383 2017-04-24 21:21:49Z brooks $
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*/
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#ifndef _SYS_PARAM_H_
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#define _SYS_PARAM_H_
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/* from newlib's <sys/param.h> */
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#include <sys/config.h>
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#include <machine/endian.h>
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# define PATHSIZE (1024)
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/* end of from newlib's <sys/param.h> */
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#define BSD 199506 /* System version (year & month). */
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#define BSD4_3 1
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#define BSD4_4 1
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#ifndef NULL
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#define NULL 0
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#endif
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#ifndef LOCORE
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#include <sys/types.h>
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#endif
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@ -78,32 +65,95 @@
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#define MAXHOSTNAMELEN 256 /* max hostname size */
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#define SPECNAMELEN 63 /* max length of devicename */
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/* More types and definitions used throughout the kernel. */
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#if defined(KERNEL) || defined(_KERNEL)
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#include <sys/cdefs.h>
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#include <sys/errno.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/uio.h>
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#include <sys/priority.h>
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#ifndef FALSE
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#define FALSE 0
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#endif
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#ifndef TRUE
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#define TRUE 1
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#endif
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#endif
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#ifndef _KERNEL
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/* Signals. */
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#include <sys/signal.h>
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#endif
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/* Machine type dependent parameters. */
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#include <machine/param.h>
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#include <machine/limits.h>
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#ifndef _KERNEL
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#include <limits.h>
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#endif
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#ifndef DEV_BSHIFT
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#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
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#endif
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#define DEV_BSIZE (1<<DEV_BSHIFT)
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#ifndef BLKDEV_IOSIZE
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#define BLKDEV_IOSIZE PAGE_SIZE /* default block device I/O size */
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#endif
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#ifndef DFLTPHYS
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#define DFLTPHYS (64 * 1024) /* default max raw I/O transfer size */
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#endif
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#ifndef MAXPHYS
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#define MAXPHYS (128 * 1024) /* max raw I/O transfer size */
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#endif
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#ifndef MAXDUMPPGS
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#define MAXDUMPPGS (DFLTPHYS/PAGE_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 PAGE_SIZE.
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*/
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#ifndef MSIZE
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#define MSIZE 128 /* size of an mbuf */
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#endif
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#ifndef MCLSHIFT
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#define MCLSHIFT 11 /* convert bytes to mbuf clusters */
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#endif /* MCLSHIFT */
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#define MCLBYTES (1 << MCLSHIFT) /* size of an mbuf cluster */
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#if PAGE_SIZE < 2048
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#define MJUMPAGESIZE MCLBYTES
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#elif PAGE_SIZE <= 8192
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#define MJUMPAGESIZE PAGE_SIZE
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#else
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#define MJUMPAGESIZE (8 * 1024)
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#endif
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#define MJUM9BYTES (9 * 1024) /* jumbo cluster 9k */
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#define MJUM16BYTES (16 * 1024) /* jumbo cluster 16k */
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/*
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* Some macros for units conversion
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*/
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/* clicks to bytes */
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#ifndef ctob
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#define ctob(x) ((x)<<PAGE_SHIFT)
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#endif
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/* bytes to clicks */
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#ifndef btoc
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#define btoc(x) (((vm_offset_t)(x)+PAGE_MASK)>>PAGE_SHIFT)
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#endif
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/*
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* btodb() is messy and perhaps slow because `bytes' may be an off_t. We
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* want to shift an unsigned type to avoid sign extension and we don't
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* want to widen `bytes' unnecessarily. Assume that the result fits in
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* a daddr_t.
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*/
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#ifndef btodb
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#define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \
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(sizeof (bytes) > sizeof(long) \
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? (daddr_t)((unsigned long long)(bytes) >> DEV_BSHIFT) \
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: (daddr_t)((unsigned long)(bytes) >> DEV_BSHIFT))
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#endif
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#ifndef dbtob
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#define dbtob(db) /* calculates (db * DEV_BSIZE) */ \
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((off_t)(db) << DEV_BSHIFT)
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#endif
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#define PRIMASK 0x0ff
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#define PCATCH 0x100 /* OR'd with pri for tsleep to check signals */
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#define PDROP 0x200 /* OR'd with pri to stop re-entry of interlock mutex */
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#define NZERO 0 /* default "nice" */
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@ -111,13 +161,8 @@
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#define NBPW sizeof(int) /* number of bytes per word (integer) */
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#define CMASK 022 /* default file mask: S_IWGRP|S_IWOTH */
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#define NODEV (dev_t)(-1) /* non-existent device */
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#define CBLOCK 128 /* Clist block size, must be a power of 2. */
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#define CBQSIZE (CBLOCK/NBBY) /* Quote bytes/cblock - can do better. */
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/* Data chars/clist. */
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#define CBSIZE (CBLOCK - sizeof(struct cblock *) - CBQSIZE)
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#define CROUND (CBLOCK - 1) /* Clist rounding. */
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#define NODEV (dev_t)(-1) /* non-existent device */
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/*
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* File system parameters and macros.
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@ -128,10 +173,19 @@
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* and may be made smaller at the risk of not being able to use
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* filesystems which require a block size exceeding MAXBSIZE.
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*
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* MAXBCACHEBUF - Maximum size of a buffer in the buffer cache. This must
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* be >= MAXBSIZE and can be set differently for different
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* architectures by defining it in <machine/param.h>.
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* Making this larger allows NFS to do larger reads/writes.
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*
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* BKVASIZE - Nominal buffer space per buffer, in bytes. BKVASIZE is the
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* minimum KVM memory reservation the kernel is willing to make.
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* Filesystems can of course request smaller chunks. Actual
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* backing memory uses a chunk size of a page (PAGE_SIZE).
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* The default value here can be overridden on a per-architecture
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* basis by defining it in <machine/param.h>. This should
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* probably be done to increase its value, when MAXBCACHEBUF is
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* defined as a larger value in <machine/param.h>.
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*
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* If you make BKVASIZE too small you risk seriously fragmenting
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* the buffer KVM map which may slow things down a bit. If you
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@ -143,7 +197,12 @@
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* normal UFS filesystem.
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*/
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#define MAXBSIZE 65536 /* must be power of 2 */
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#ifndef MAXBCACHEBUF
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#define MAXBCACHEBUF MAXBSIZE /* must be a power of 2 >= MAXBSIZE */
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#endif
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#ifndef BKVASIZE
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#define BKVASIZE 16384 /* must be power of 2 */
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#endif
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#define BKVAMASK (BKVASIZE-1)
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/*
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@ -170,34 +229,16 @@
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#ifndef howmany
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#define howmany(x, y) (((x)+((y)-1))/(y))
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#endif
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#define nitems(x) (sizeof((x)) / sizeof((x)[0]))
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#define rounddown(x, y) (((x)/(y))*(y))
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#define rounddown2(x, y) ((x)&(~((y)-1))) /* if y is power of two */
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#define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) /* to any y */
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#define roundup2(x, y) (((x)+((y)-1))&(~((y)-1))) /* if y is powers of two */
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#define powerof2(x) ((((x)-1)&(x))==0)
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/* Macros for min/max. */
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#if !(defined(KERNEL) || defined(_KERNEL))
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#define MIN(a,b) (((a)<(b))?(a):(b))
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#define MAX(a,b) (((a)>(b))?(a):(b))
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#endif
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/*
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* Constants for setting the parameters of the kernel memory allocator.
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*
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* 2 ** MINBUCKET is the smallest unit of memory that will be
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* allocated. It must be at least large enough to hold a pointer.
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*
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* Units of memory less or equal to MAXALLOCSAVE will permanently
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* allocate physical memory; requests for these size pieces of
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* memory are quite fast. Allocations greater than MAXALLOCSAVE must
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* always allocate and free physical memory; requests for these
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* size allocations should be done infrequently as they will be slow.
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*
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* Constraints: PAGE_SIZE <= MAXALLOCSAVE <= 2 ** (MINBUCKET + 14), and
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* MAXALLOCSIZE must be a power of two.
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*/
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#define MINBUCKET 4 /* 4 => min allocation of 16 bytes */
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#define MAXALLOCSAVE (2 * PAGE_SIZE)
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/*
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* Scale factor for scaled integers used to count %cpu time and load avgs.
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@ -213,4 +254,27 @@
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#define FSHIFT 11 /* bits to right of fixed binary point */
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#define FSCALE (1<<FSHIFT)
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#define dbtoc(db) /* calculates devblks to pages */ \
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((db + (ctodb(1) - 1)) >> (PAGE_SHIFT - DEV_BSHIFT))
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#define ctodb(db) /* calculates pages to devblks */ \
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((db) << (PAGE_SHIFT - DEV_BSHIFT))
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/*
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* Old spelling of __containerof().
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*/
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#define member2struct(s, m, x) \
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((struct s *)(void *)((char *)(x) - offsetof(struct s, m)))
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/*
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* Access a variable length array that has been declared as a fixed
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* length array.
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*/
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#define __PAST_END(array, offset) (((__typeof__(*(array)) *)(array))[offset])
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#ifdef _KERNEL
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/* Header file provided outside of Newlib */
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#include <machine/_kernel_param.h>
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#endif
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#endif /* _SYS_PARAM_H_ */
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