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124 lines
4.2 KiB
C
124 lines
4.2 KiB
C
/* $NetBSD: vmparam.h,v 1.43 2013/01/07 16:59:18 chs Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* 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, Lawrence Berkeley Laboratory.
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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. 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 8.1 (Berkeley) 6/11/93
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*/
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#ifndef _SPARC_VMPARAM_H_
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#define _SPARC_VMPARAM_H_
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#define __USE_TOPDOWN_VM
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/*
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* Machine dependent constants for SPARC
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*/
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#include <machine/cpuconf.h>
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/*
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* Sun4 systems have a 8K page size. All other platforms have a
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* 4K page size. We need to define these upper and lower limits
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* for machine-independent code. We also try to make PAGE_SIZE,
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* PAGE_SHIFT, and PAGE_MASK into compile-time constants, if we can.
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*
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* XXX Should garbage-collect the version of this from <machine/param.h>.
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*/
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#define PAGE_SHIFT_SUN4 13
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#define PAGE_SHIFT_SUN4CM 12
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#define MIN_PAGE_SIZE (1 << PAGE_SHIFT_SUN4CM)
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#define MAX_PAGE_SIZE (1 << PAGE_SHIFT_SUN4)
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#if CPU_NTYPES != 0 && !defined(SUN4)
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#define PAGE_SHIFT PAGE_SHIFT_SUN4CM
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#define PAGE_SIZE (1 << PAGE_SHIFT)
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#define PAGE_MASK (PAGE_SIZE - 1)
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#elif CPU_NTYPES == 1 && defined(SUN4)
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#define PAGE_SHIFT PAGE_SHIFT_SUN4
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#define PAGE_SIZE (1 << PAGE_SHIFT)
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#define PAGE_MASK (PAGE_SIZE - 1)
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#endif
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/*
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* USRSTACK is the top (end) of the user stack.
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*/
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#define USRSTACK KERNBASE /* Start of user stack */
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/*
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* Virtual memory related constants, all in bytes
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*/
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#ifndef MAXTSIZ
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#define MAXTSIZ (64*1024*1024) /* max text size */
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#endif
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#ifndef DFLDSIZ
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#define DFLDSIZ (64*1024*1024) /* initial data size limit */
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#endif
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#ifndef MAXDSIZ
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#define MAXDSIZ (512*1024*1024) /* max data size */
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#endif
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#ifndef DFLSSIZ
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#define DFLSSIZ (8*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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* Mach derived constants
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*/
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/*
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* User/kernel map constants. Note that sparc/vaddrs.h defines the
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* IO space virtual base, which must be the same as VM_MAX_KERNEL_ADDRESS:
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* tread with care.
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*/
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#define VM_MIN_ADDRESS ((vaddr_t)0)
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#define VM_MAX_ADDRESS ((vaddr_t)KERNBASE)
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#define VM_MAXUSER_ADDRESS ((vaddr_t)KERNBASE)
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#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE)
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#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)KERNEND)
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#define VM_PHYSSEG_MAX 32 /* up to 32 segments */
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#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
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#define VM_NFREELIST 1
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#define VM_FREELIST_DEFAULT 0
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#endif /* _SPARC_VMPARAM_H_ */
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