vmparam.h revision 1.11
1/* $NetBSD: vmparam.h,v 1.11 2003/08/07 16:28:50 agc Exp $ */ 2 3/* 4 * Copyright (c) 1982, 1986, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 36 * 37 * @(#)vmparam.h 8.2 (Berkeley) 4/19/94 38 */ 39/* 40 * Copyright (c) 1988 University of Utah. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * the Systems Programming Group of the University of Utah Computer 44 * Science Department. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 75 * 76 * @(#)vmparam.h 8.2 (Berkeley) 4/19/94 77 */ 78 79#ifndef _NEWS68K_VMPARAM_H_ 80#define _NEWS68K_VMPARAM_H_ 81 82/* 83 * Machine dependent constants for news68k 84 */ 85 86/* 87 * We use 4K pages on the news68k. Override the PAGE_* definitions 88 * to be compile time constants. 89 */ 90#define PAGE_SHIFT 12 91#define PAGE_SIZE (1 << PAGE_SHIFT) 92#define PAGE_MASK (PAGE_SIZE - 1) 93 94/* 95 * USRSTACK is the top (end) of the user stack. 96 * 97 * NOTE: the ONLY reason that HIGHPAGES is 0x100 instead of UPAGES (3) 98 * is for HPUX compatibility. Why?? Because HPUX's debuggers 99 * have the user's stack hard-wired at FFF00000 for post-mortems, 100 * and we must be compatible... 101 */ 102#define USRSTACK (-HIGHPAGES*PAGE_SIZE) /* Start of user stack */ 103#define BTOPUSRSTACK (0x100000-HIGHPAGES) /* btop(USRSTACK) */ 104#define P1PAGES 0x100000 105#define HIGHPAGES (0x100000/PAGE_SIZE) 106 107/* 108 * Virtual memory related constants, all in bytes 109 */ 110#ifndef MAXTSIZ 111#define MAXTSIZ (8*1024*1024) /* max text size */ 112#endif 113#ifndef DFLDSIZ 114#define DFLDSIZ (16*1024*1024) /* initial data size limit */ 115#endif 116#ifndef MAXDSIZ 117#define MAXDSIZ (64*1024*1024) /* max data size */ 118#endif 119#ifndef DFLSSIZ 120#define DFLSSIZ (512*1024) /* initial stack size limit */ 121#endif 122#ifndef MAXSSIZ 123#define MAXSSIZ MAXDSIZ /* max stack size */ 124#endif 125 126/* 127 * Sizes of the system and user portions of the system page table. 128 */ 129/* SYSPTSIZE IS SILLY; IT SHOULD BE COMPUTED AT BOOT TIME */ 130#define SYSPTSIZE (2 * NPTEPG) /* 8mb */ 131#define USRPTSIZE (1 * NPTEPG) /* 4mb */ 132 133/* 134 * PTEs for mapping user space into the kernel for phyio operations. 135 * One page is enough to handle 4Mb of simultaneous raw IO operations. 136 */ 137#ifndef USRIOSIZE 138#define USRIOSIZE (1 * NPTEPG) /* 4mb */ 139#endif 140 141/* 142 * PTEs for system V style shared memory. 143 * This is basically slop for kmempt which we actually allocate (malloc) from. 144 */ 145#ifndef SHMMAXPGS 146#define SHMMAXPGS 1024 /* 4mb */ 147#endif 148 149/* 150 * Mach derived constants 151 */ 152 153/* user/kernel map constants */ 154#define VM_MIN_ADDRESS ((vaddr_t)0) 155#define VM_MAXUSER_ADDRESS ((vaddr_t)0xFFF00000) 156#define VM_MAX_ADDRESS ((vaddr_t)0xFFF00000) 157#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0) 158#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xFFFFF000) 159 160/* virtual sizes (bytes) for various kernel submaps */ 161#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 162 163/* # of kernel PT pages (initial only, can grow dynamically) */ 164#define VM_KERNEL_PT_PAGES ((vsize_t)2) /* XXX: SYSPTSIZE */ 165 166/* 167 * Constants which control the way the VM system deals with memory segments. 168 * The news68k only has one physical memory segment? 169 */ 170#define VM_PHYSSEG_MAX 1 171#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 172#define VM_PHYSSEG_NOADD 173 174#define VM_NFREELIST 1 175#define VM_FREELIST_DEFAULT 0 176 177#define __HAVE_PMAP_PHYSSEG 178 179/* 180 * pmap-specific data stored in the vm_physmem[] array. 181 */ 182struct pmap_physseg { 183 struct pv_entry *pvent; /* pv table for this seg */ 184 char *attrs; /* page attributes for this seg */ 185}; 186 187#endif /* _NEWS68K_VMPARAM_H_ */ 188