89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/* $NetBSD: vmparam.h,v 1.36 2010/11/06 15:42:49 uebayasi Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SUN3_VMPARAM_H_
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#define _SUN3_VMPARAM_H_ 1
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/*
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* We use 8K pages on both the sun3 and sun3x. Override PAGE_*
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* to be compile-time constants.
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*/
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#define PAGE_SHIFT 13
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#define PAGE_SIZE (1 << PAGE_SHIFT)
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#define PAGE_MASK (PAGE_SIZE - 1)
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#define USRSTACK kernbase /* for modules */
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#define USRSTACK3 KERNBASE3 /* for asm not in modules */
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#define USRSTACK3X KERNBASE3X
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#ifdef _SUN3_
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#include <machine/vmparam3.h>
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#endif /* SUN3 */
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#ifdef _SUN3X_
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#include <machine/vmparam3x.h>
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#endif /* SUN3X */
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/* default for modules etc. */
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#if !defined(_SUN3_) && !defined(_SUN3X_)
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#include <machine/vmparam3.h>
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#endif
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/*
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* PTEs for mapping user space into the kernel for phyio operations.
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* The actual limitation for physio requests will be the DVMA space,
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* and that is fixed by hardware design at 1MB. We could make the
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* physio map larger than that, but it would not buy us much.
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*/
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#ifndef USRIOSIZE
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#define USRIOSIZE 128 /* 1 MB */
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#endif
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/* This is needed by some LKMs. */
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#define VM_PHYSSEG_MAX 4
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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 ((vaddr_t)0)
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#define VM_MAX_ADDRESS kernbase
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#define VM_MAXUSER_ADDRESS kernbase
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#define VM_MIN_KERNEL_ADDRESS kernbase
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#define VM_MAX_KERNEL_ADDRESS kern_end
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/* virtual sizes (bytes) for various kernel submaps */
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#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
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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 /* _SUN3_VMPARAM_H_ */
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