1 /* $NetBSD: vmparam.h,v 1.41 2010/11/06 15:42:46 uebayasi Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1990 The Regents of the University of California. 5 * 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 /* 36 * Copyright (c) 1988 University of Utah. 37 * 38 * This code is derived from software contributed to Berkeley by 39 * the Systems Programming Group of the University of Utah Computer 40 * Science Department. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 /*- 71 * Copyright (C) 1993 Allen K. Briggs, Chris P. Caputo, 72 * Michael L. Finch, Bradley A. Grantham, and 73 * Lawrence A. Kesteloot 74 * All rights reserved. 75 * 76 * Redistribution and use in source and binary forms, with or without 77 * modification, are permitted provided that the following conditions 78 * are met: 79 * 1. Redistributions of source code must retain the above copyright 80 * notice, this list of conditions and the following disclaimer. 81 * 2. Redistributions in binary form must reproduce the above copyright 82 * notice, this list of conditions and the following disclaimer in the 83 * documentation and/or other materials provided with the distribution. 84 * 3. All advertising materials mentioning features or use of this software 85 * must display the following acknowledgement: 86 * This product includes software developed by the Alice Group. 87 * 4. The names of the Alice Group or any of its members may not be used 88 * to endorse or promote products derived from this software without 89 * specific prior written permission. 90 * 91 * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR 92 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 93 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 94 * IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT, 95 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 96 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 97 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 98 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 99 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 100 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 101 * 102 */ 103 /* 104 * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 105 * 106 * @(#)vmparam.h 7.3 (Berkeley) 5/7/91 107 */ 108 109 #ifndef _MAC68K_VMPARAM_H_ 110 #define _MAC68K_VMPARAM_H_ 111 112 /* 113 * Machine dependent constants for mac68k -- mostly derived from hp300. 114 */ 115 116 /* 117 * We use 4K pages on the mac68k. Override the PAGE_* definitions 118 * to be compile-time constants. 119 */ 120 #define PAGE_SHIFT PGSHIFT 121 #define PAGE_SIZE (1 << PAGE_SHIFT) 122 #define PAGE_MASK (PAGE_SIZE - 1) 123 124 /* 125 * USRSTACK is the top (end) of the user stack. 126 * 127 * NOTE: HP300 uses HIGHPAGES == (0x100000/PAGE_SIZE) for HP/UX compatibility. 128 * Do we care? Obviously not at the moment. 129 */ 130 #define USRSTACK (-HIGHPAGES*PAGE_SIZE) /* Start of user stack */ 131 #define BTOPUSRSTACK (0x100000-HIGHPAGES) /* btop(USRSTACK) */ 132 #define P1PAGES 0x100000 133 #define HIGHPAGES 3 /* UPAGES */ 134 135 /* 136 * Virtual memory related constants, all in bytes 137 */ 138 #ifndef MAXTSIZ 139 #define MAXTSIZ (8*1024*1024) /* max text size */ 140 #endif 141 #ifndef DFLDSIZ 142 #define DFLDSIZ (32*1024*1024) /* initial data size limit */ 143 #endif 144 #ifndef MAXDSIZ 145 #define MAXDSIZ (64*1024*1024) /* max data size */ 146 #endif 147 #ifndef DFLSSIZ 148 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 149 #endif 150 #ifndef MAXSSIZ 151 #define MAXSSIZ (32*1024*1024) /* max stack size */ 152 #endif 153 154 /* 155 * Sizes of the system and user portions of the system page table. 156 */ 157 /* SYSPTSIZE IS SILLY; IT SHOULD BE COMPUTED AT BOOT TIME */ 158 #define SYSPTSIZE (2 * NPTEPG) /* 8mb */ 159 #define USRPTSIZE (1 * NPTEPG) /* 4mb */ 160 161 /* 162 * PTEs for mapping user space into the kernel for phyio operations. 163 * One page is enough to handle 4Mb of simultaneous raw IO operations. 164 */ 165 #ifndef USRIOSIZE 166 #define USRIOSIZE (1 * NPTEPG) /* 4mb */ 167 #endif 168 169 /* 170 * Mach derived constants 171 */ 172 173 /* user/kernel map constants */ 174 #define VM_MIN_ADDRESS ((vaddr_t)0) 175 #define VM_MAXUSER_ADDRESS ((vaddr_t)(USRSTACK)) 176 #define VM_MAX_ADDRESS ((vaddr_t)(0-(UPAGES*PAGE_SIZE))) 177 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0) 178 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)(0-PAGE_SIZE*NPTEPG)) 179 180 /* virtual sizes (bytes) for various kernel submaps */ 181 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 182 183 /* # of kernel PT pages (initial only, can grow dynamically) */ 184 #define VM_KERNEL_PT_PAGES ((vsize_t)2) /* XXX: SYSPTSIZE */ 185 186 /* 187 * Constants which control the way the VM system deals with memory segments. 188 * Most mac68k systems have only 1 physical memory segment, but some have 2. 189 * 190 * On the systems that have multiple segments, specifically the IIsi and 191 * IIci, the optimal configuration is to put the higher-density SIMMs in 192 * bank B. This is because the on-board video uses main memory in bank A 193 * for the framebuffer, and a memory controller prevents access during 194 * video refresh cycles. Even if both banks contain the same amount of 195 * RAM, a minimum of ~320KB will be subtracted from the amount in bank A 196 * for the framebuffer (if on-board video is in use). 197 */ 198 #define VM_PHYSSEG_MAX 2 199 #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST 200 201 #define VM_NFREELIST 1 202 #define VM_FREELIST_DEFAULT 0 203 204 #define __HAVE_PMAP_PHYSSEG 205 206 /* 207 * pmap-specific data stored in the vm_physmem[] array. 208 */ 209 struct pmap_physseg { 210 struct pv_header *pvheader; /* pv table for this seg */ 211 }; 212 213 #endif /* _MAC68K_VMPARAM_H_ */ 214