StdLib/Include/Ia32/machine/param.h - edk2 - Git at Google

 /*	$NetBSD: param.h,v 1.61 2006/08/28 13:43:35 yamt Exp $	*/

 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
  *
  * This code is derived from software contributed to Berkeley by
  * William Jolitz.
  *
  * 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. 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	5.8 (Berkeley) 6/28/91
  */

 #ifndef _I386_PARAM_H_
 #define _I386_PARAM_H_

 /*
  * Machine dependent constants for Intel 386.
  */

 #ifdef _KERNEL
 #ifdef _LOCORE
 #include <machine/psl.h>
 #else
 #include <machine/cpu.h>
 #endif
 #endif

 #define	_MACHINE	i386
 #define	MACHINE		"i386"
 #define	_MACHINE_ARCH	i386
 #define	MACHINE_ARCH	"i386"
 #define	MID_MACHINE	MID_I386

 /*
  * 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.
  *
  * ALIGNED_POINTER is a boolean macro that checks whether an address
  * is valid to fetch data elements of type t from on this architecture.
  * This does not reflect the optimal alignment, just the possibility
  * (within reasonable limits).
  *
  */
 #define ALIGNBYTES		(sizeof(int) - 1)
 #define ALIGN(p)		(((u_int)(u_long)(p) + ALIGNBYTES) &~ \
     ALIGNBYTES)
 #define ALIGNED_POINTER(p,t)	1

 #define	PGSHIFT		12		/* LOG2(NBPG) */
 #define	NBPG		(1 << PGSHIFT)	/* bytes/page */
 #define	PGOFSET		(NBPG-1)	/* byte offset into page */
 #define	NPTEPG		(NBPG/(sizeof (pt_entry_t)))

 #if defined(_KERNEL_OPT)
 #include "opt_kernbase.h"
 #endif /* defined(_KERNEL_OPT) */

 #ifdef KERNBASE_LOCORE
 #error "You should only re-define KERNBASE"
 #endif

 #ifndef	KERNBASE
 #define	KERNBASE	0xc0000000UL	/* start of kernel virtual space */
 #endif

 #define	KERNTEXTOFF	(KERNBASE + 0x100000) /* start of kernel text */
 #define	BTOPKERNBASE	(KERNBASE >> PGSHIFT)

 #define	DEV_BSHIFT	9		/* log2(DEV_BSIZE) */
 #define	DEV_BSIZE	(1 << DEV_BSHIFT)
 #define	BLKDEV_IOSIZE	2048
 #ifndef	MAXPHYS
 #define	MAXPHYS		(64 * 1024)	/* max raw I/O transfer size */
 #endif

 #define	SSIZE		1		/* initial stack size/NBPG */
 #define	SINCR		1		/* increment of stack/NBPG */

 #ifdef _KERNEL_OPT
 #include "opt_noredzone.h"
 #endif
 #ifndef UPAGES
 #ifdef NOREDZONE
 #define	UPAGES		2		/* pages of u-area */
 #else
 #define UPAGES		3
 #endif /*NOREDZONE */
 #endif /* !defined(UPAGES) */
 #define	USPACE		(UPAGES * NBPG)	/* total size of u-area */

 #ifndef MSGBUFSIZE
 #define MSGBUFSIZE	4*NBPG		/* default message buffer size */
 #endif

 /*
  * Constants related to network buffer management.
  * MCLBYTES must be no larger than NBPG (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 */

 #ifndef MCLSHIFT
 #define	MCLSHIFT	11		/* convert bytes to m_buf clusters */
 					/* 2K cluster can hold Ether frame */
 #endif	/* MCLSHIFT */

 #define	MCLBYTES	(1 << MCLSHIFT)	/* size of a m_buf cluster */

 #ifndef NMBCLUSTERS
 #if defined(_KERNEL_OPT)
 #include "opt_gateway.h"
 #endif

 #ifdef GATEWAY
 #define	NMBCLUSTERS	2048		/* map size, max cluster allocation */
 #else
 #define	NMBCLUSTERS	1024		/* map size, max cluster allocation */
 #endif
 #endif

 #ifndef NFS_RSIZE
 #define NFS_RSIZE	32768
 #endif
 #ifndef NFS_WSIZE
 #define NFS_WSIZE	32768
 #endif

 /*
  * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
  * logical pages.
  */
 #define	NKMEMPAGES_MIN_DEFAULT	((8 * 1024 * 1024) >> PAGE_SHIFT)
 #define	NKMEMPAGES_MAX_DEFAULT	((128 * 1024 * 1024) >> PAGE_SHIFT)

 /*
  * Mach derived conversion macros
  */
 #define	x86_round_pdr(x)	((((unsigned)(x)) + PDOFSET) & ~PDOFSET)
 #define	x86_trunc_pdr(x)	((unsigned)(x) & ~PDOFSET)
 #define	x86_btod(x)		((unsigned)(x) >> PDSHIFT)
 #define	x86_dtob(x)		((unsigned)(x) << PDSHIFT)
 #define	x86_round_page(x)	((((unsigned)(x)) + PGOFSET) & ~PGOFSET)
 #define	x86_trunc_page(x)	((unsigned)(x) & ~PGOFSET)
 #define	x86_btop(x)		((unsigned)(x) >> PGSHIFT)
 #define	x86_ptob(x)		((unsigned)(x) << PGSHIFT)

 #endif /* _I386_PARAM_H_ */
	/* $NetBSD: param.h,v 1.61 2006/08/28 13:43:35 yamt Exp $ */

	/*-
	* Copyright (c) 1990 The Regents of the University of California.
	* All rights reserved.
	*
	* This code is derived from software contributed to Berkeley by
	* William Jolitz.
	*
	* 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. 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 5.8 (Berkeley) 6/28/91
	*/

	#ifndef _I386_PARAM_H_
	#define _I386_PARAM_H_

	/*
	* Machine dependent constants for Intel 386.
	*/

	#ifdef _KERNEL
	#ifdef _LOCORE
	#include <machine/psl.h>
	#else
	#include <machine/cpu.h>
	#endif
	#endif

	#define _MACHINE i386
	#define MACHINE "i386"
	#define _MACHINE_ARCH i386
	#define MACHINE_ARCH "i386"
	#define MID_MACHINE MID_I386

	/*
	* 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.
	*
	* ALIGNED_POINTER is a boolean macro that checks whether an address
	* is valid to fetch data elements of type t from on this architecture.
	* This does not reflect the optimal alignment, just the possibility
	* (within reasonable limits).
	*
	*/
	#define ALIGNBYTES (sizeof(int) - 1)
	#define ALIGN(p) (((u_int)(u_long)(p) + ALIGNBYTES) &~ \
	ALIGNBYTES)
	#define ALIGNED_POINTER(p,t) 1

	#define PGSHIFT 12 /* LOG2(NBPG) */
	#define NBPG (1 << PGSHIFT) /* bytes/page */
	#define PGOFSET (NBPG-1) /* byte offset into page */
	#define NPTEPG (NBPG/(sizeof (pt_entry_t)))

	#if defined(_KERNEL_OPT)
	#include "opt_kernbase.h"
	#endif /* defined(_KERNEL_OPT) */

	#ifdef KERNBASE_LOCORE
	#error "You should only re-define KERNBASE"
	#endif

	#ifndef KERNBASE
	#define KERNBASE 0xc0000000UL /* start of kernel virtual space */
	#endif

	#define KERNTEXTOFF (KERNBASE + 0x100000) /* start of kernel text */
	#define BTOPKERNBASE (KERNBASE >> PGSHIFT)

	#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
	#define DEV_BSIZE (1 << DEV_BSHIFT)
	#define BLKDEV_IOSIZE 2048
	#ifndef MAXPHYS
	#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
	#endif

	#define SSIZE 1 /* initial stack size/NBPG */
	#define SINCR 1 /* increment of stack/NBPG */

	#ifdef _KERNEL_OPT
	#include "opt_noredzone.h"
	#endif
	#ifndef UPAGES
	#ifdef NOREDZONE
	#define UPAGES 2 /* pages of u-area */
	#else
	#define UPAGES 3
	#endif /NOREDZONE /
	#endif /* !defined(UPAGES) */
	#define USPACE (UPAGES * NBPG) /* total size of u-area */

	#ifndef MSGBUFSIZE
	#define MSGBUFSIZE 4NBPG / default message buffer size */
	#endif

	/*
	* Constants related to network buffer management.
	* MCLBYTES must be no larger than NBPG (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 */

	#ifndef MCLSHIFT
	#define MCLSHIFT 11 /* convert bytes to m_buf clusters */
	/* 2K cluster can hold Ether frame */
	#endif /* MCLSHIFT */

	#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */

	#ifndef NMBCLUSTERS
	#if defined(_KERNEL_OPT)
	#include "opt_gateway.h"
	#endif

	#ifdef GATEWAY
	#define NMBCLUSTERS 2048 /* map size, max cluster allocation */
	#else
	#define NMBCLUSTERS 1024 /* map size, max cluster allocation */
	#endif
	#endif

	#ifndef NFS_RSIZE
	#define NFS_RSIZE 32768
	#endif
	#ifndef NFS_WSIZE
	#define NFS_WSIZE 32768
	#endif

	/*
	* Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
	* logical pages.
	*/
	#define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT)
	#define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT)

	/*
	* Mach derived conversion macros
	*/
	#define x86_round_pdr(x) ((((unsigned)(x)) + PDOFSET) & ~PDOFSET)
	#define x86_trunc_pdr(x) ((unsigned)(x) & ~PDOFSET)
	#define x86_btod(x) ((unsigned)(x) >> PDSHIFT)
	#define x86_dtob(x) ((unsigned)(x) << PDSHIFT)
	#define x86_round_page(x) ((((unsigned)(x)) + PGOFSET) & ~PGOFSET)
	#define x86_trunc_page(x) ((unsigned)(x) & ~PGOFSET)
	#define x86_btop(x) ((unsigned)(x) >> PGSHIFT)
	#define x86_ptob(x) ((unsigned)(x) << PGSHIFT)

	#endif /* _I386_PARAM_H_ */