9b4c0e34d2
x86-64. Since there's no hardware available yet, this port is only known to run on the Simics simulator for at the moment, and as such uses the PC devices that it simulates for now. It will be developed more (and cleaned up) as the hardware becomes available.
153 lines
4.8 KiB
C
153 lines
4.8 KiB
C
/* $NetBSD: vmparam.h,v 1.1 2001/06/19 00:20:13 fvdl Exp $ */
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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* 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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* @(#)vmparam.h 5.9 (Berkeley) 5/12/91
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*/
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#ifndef _VMPARAM_H_
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#define _VMPARAM_H_
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/*
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* Machine dependent constants for 386.
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*/
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/*
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* Page size on the x86-64 is not variable in the traditional sense.
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* We override the PAGE_* definitions to compile-time constants.
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*/
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#define PAGE_SHIFT 12
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#define PAGE_SIZE (1 << PAGE_SHIFT)
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#define PAGE_MASK (PAGE_SIZE - 1)
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/*
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* USRTEXT is the start of the user text/data space, while USRSTACK
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* is the top (end) of the user stack. Immediately above the user stack
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* resides the user structure, which is UPAGES long and contains the
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* kernel stack.
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*
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* Immediately after the user structure is the page table map, and then
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* kernal address space.
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*/
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#define USRTEXT NBPG
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#define USRSTACK VM_MAXUSER_ADDRESS
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#define USRSTACK32 VM_MAXUSER_ADDRESS32
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/*
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* Virtual memory related constants, all in bytes
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*/
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#define MAXTSIZ (64*1024*1024) /* max text size */
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#ifndef DFLDSIZ
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#define DFLDSIZ (128*1024*1024) /* initial data size limit */
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#endif
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#ifndef MAXDSIZ
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#define MAXDSIZ (1*1024*1024*1024) /* max data size */
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#endif
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#ifndef DFLSSIZ
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#define DFLSSIZ (2*1024*1024) /* initial stack size limit */
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#endif
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#ifndef MAXSSIZ
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#define MAXSSIZ (32*1024*1024) /* max stack size */
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#endif
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/*
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* Size of shared memory map
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*/
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#ifndef SHMMAXPGS
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#define SHMMAXPGS 2048
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#endif
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/*
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* Size of User Raw I/O map
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*/
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#define USRIOSIZE 300
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/*
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* The time for a process to be blocked before being very swappable.
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* This is a number of seconds which the system takes as being a non-trivial
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* amount of real time. You probably shouldn't change this;
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* it is used in subtle ways (fractions and multiples of it are, that is, like
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* half of a ``long time'', almost a long time, etc.)
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* It is related to human patience and other factors which don't really
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* change over time.
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*/
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#define MAXSLP 20
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/*
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* Mach derived constants
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*/
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/* user/kernel map constants */
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#define VM_MIN_ADDRESS 0
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#define VM_MAXUSER_ADDRESS 0x00007f7fffffc000
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#define VM_MAX_ADDRESS 0x00007fbfdfeff000
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#define VM_MIN_KERNEL_ADDRESS 0xffff800000000000
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#define VM_MAX_KERNEL_ADDRESS 0xffff800080000000
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#define VM_MAXUSER_ADDRESS32 0xffffc000
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/*
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* XXXfvdl we have plenty of KVM now, remove this.
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*/
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#ifndef VM_MAX_KERNEL_BUF
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#define VM_MAX_KERNEL_BUF \
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((VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS) / 1024 * 7 / 10 * 1024)
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#endif
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/* virtual sizes (bytes) for various kernel submaps */
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#define VM_PHYS_SIZE (USRIOSIZE*NBPG)
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#define VM_PHYSSEG_MAX 5 /* 1 "hole" + 4 free lists */
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#define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST
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#define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */
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#define VM_NFREELIST 2
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#define VM_FREELIST_DEFAULT 0
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#define VM_FREELIST_FIRST16 1
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#define __HAVE_PMAP_PHYSSEG
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/*
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* pmap specific data stored in the vm_physmem[] array
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*/
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struct pmap_physseg {
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struct pv_head *pvhead; /* pv_head array */
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char *attrs; /* attrs array */
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};
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#endif /* _VMPARAM_H_ */
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