/** @file | |
Machine dependent constants for Intel IA32 Architecture. | |
Copyright (c) 2010-2012, Intel Corporation. All rights reserved.<BR> | |
This program and the accompanying materials are licensed and made available under | |
the terms and conditions of the BSD License that accompanies this distribution. | |
The full text of the license may be found at | |
http://opensource.org/licenses/bsd-license. | |
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
* 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 | |
* $NetBSD: param.h,v 1.61 2006/08/28 13:43:35 yamt Exp | |
*/ | |
#ifndef _I386_PARAM_H_ | |
#define _I386_PARAM_H_ | |
#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) (((EFI_ULONG_T)(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))) | |
#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 */ | |
#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 | |
#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) ((((EFI_ULONG_T)(x)) + PDOFSET) & ~PDOFSET) | |
#define x86_trunc_pdr(x) ((EFI_ULONG_T)(x) & ~PDOFSET) | |
#define x86_btod(x) ((EFI_ULONG_T)(x) >> PDSHIFT) | |
#define x86_dtob(x) ((EFI_ULONG_T)(x) << PDSHIFT) | |
#define x86_round_page(x) ((((EFI_ULONG_T)(x)) + PGOFSET) & ~PGOFSET) | |
#define x86_trunc_page(x) ((EFI_ULONG_T)(x) & ~PGOFSET) | |
#define x86_btop(x) ((EFI_ULONG_T)(x) >> PGSHIFT) | |
#define x86_ptob(x) ((EFI_ULONG_T)(x) << PGSHIFT) | |
#endif /* _I386_PARAM_H_ */ |