1/* $NetBSD$ */ 2 3/*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#ifndef _SUN3_VMPARAM_H_ 30#define _SUN3_VMPARAM_H_ 1 31 32/* 33 * We use 8K pages on both the sun3 and sun3x. Override PAGE_* 34 * to be compile-time constants. 35 */ 36#define PAGE_SHIFT 13 37#define PAGE_SIZE (1 << PAGE_SHIFT) 38#define PAGE_MASK (PAGE_SIZE - 1) 39 40#define USRSTACK kernbase /* for modules */ 41#define USRSTACK3 KERNBASE3 /* for asm not in modules */ 42#define USRSTACK3X KERNBASE3X 43 44#ifdef _SUN3_ 45#include <machine/vmparam3.h> 46#endif /* SUN3 */ 47#ifdef _SUN3X_ 48#include <machine/vmparam3x.h> 49#endif /* SUN3X */ 50 51/* default for modules etc. */ 52#if !defined(_SUN3_) && !defined(_SUN3X_) 53#include <machine/vmparam3.h> 54#endif 55 56/* 57 * PTEs for mapping user space into the kernel for phyio operations. 58 * The actual limitation for physio requests will be the DVMA space, 59 * and that is fixed by hardware design at 1MB. We could make the 60 * physio map larger than that, but it would not buy us much. 61 */ 62#ifndef USRIOSIZE 63#define USRIOSIZE 128 /* 1 MB */ 64#endif 65 66/* This is needed by some LKMs. */ 67#define VM_PHYSSEG_MAX 4 68 69/* 70 * Mach-derived constants: 71 */ 72 73/* user/kernel map constants */ 74#define VM_MIN_ADDRESS ((vaddr_t)0) 75#define VM_MAX_ADDRESS kernbase 76#define VM_MAXUSER_ADDRESS kernbase 77#define VM_MIN_KERNEL_ADDRESS kernbase 78#define VM_MAX_KERNEL_ADDRESS kern_end 79 80/* virtual sizes (bytes) for various kernel submaps */ 81#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 82 83#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 84 85#define VM_NFREELIST 1 86#define VM_FREELIST_DEFAULT 0 87 88#endif /* _SUN3_VMPARAM_H_ */ 89