1 /* $NetBSD: vmparam.h,v 1.41 2010/12/28 18:31:05 mhitch Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 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 * from: Utah $Hdr: vmparam.h 1.16 91/01/18$ 36 * 37 * @(#)vmparam.h 7.3 (Berkeley) 5/7/91 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 7.3 (Berkeley) 5/7/91 77 */ 78 #ifndef _MACHINE_VMPARAM_H_ 79 #define _MACHINE_VMPARAM_H_ 80 81 #include <machine/pte.h> 82 83 /* 84 * Machine dependent constants for amiga 85 */ 86 87 /* 88 * We use 8K pages on the Amiga. Override the PAGE_* definitions 89 * to be compie-time constants. 90 */ 91 #define PAGE_SHIFT PGSHIFT 92 #define PAGE_SIZE (1 << PAGE_SHIFT) 93 #define PAGE_MASK (PAGE_SIZE - 1) 94 95 /* 96 * USRSTACK is the top (end) of the user stack. 97 * 98 * These are a mixture of i386, sun3 and hp settings.. 99 */ 100 101 #ifndef USRSTACK 102 #define USRSTACK 0x1E000000 103 #endif 104 #define KUSER_AREA (-UPAGES*PAGE_SIZE) 105 /* 106 * Virtual memory related constants, all in bytes 107 */ 108 109 #ifndef MAXTSIZ 110 #define MAXTSIZ (6*1024*1024) /* max text size */ 111 #endif 112 #ifndef DFLDSIZ 113 #define DFLDSIZ (32*1024*1024) /* initial data size limit */ 114 #endif 115 #ifndef MAXDSIZ 116 #define MAXDSIZ (128*1024*1024) /* max data size */ 117 #endif 118 #ifndef DFLSSIZ 119 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 120 #endif 121 #ifndef MAXSSIZ 122 #define MAXSSIZ (32*1024*1024) /* max stack size */ 123 #endif 124 125 /* 126 * Sizes of the system and user portions of the system page table. 127 */ 128 /* SYSPTSIZE IS SILLY; IT SHOULD BE COMPUTED AT BOOT TIME */ 129 #define SYSPTSIZE (2 * NPTEPG) /* 16mb */ 130 #define USRPTSIZE (1 * NPTEPG) /* 16mb */ 131 132 /* 133 * PTEs for mapping user space into the kernel for phyio operations. 134 * One page is enough to handle 16Mb of simultaneous raw IO operations. 135 */ 136 #ifndef USRIOSIZE 137 #define USRIOSIZE (1 * NPTEPG) /* 16mb */ 138 #endif 139 140 /* 141 * user/kernel map constants 142 */ 143 #define VM_MIN_ADDRESS ((vaddr_t)0) /* user min */ 144 #define VM_MAX_ADDRESS ((vaddr_t)(USRSTACK)) /* user max */ 145 #define VM_MAXUSER_ADDRESS ((vaddr_t)(VM_MAX_ADDRESS)) /* same */ 146 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0) 147 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)-(NPTEPG * PAGE_SIZE)) 148 149 /* 150 * virtual sizes (bytes) for various kernel submaps 151 */ 152 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 153 154 /* 155 * Our bootloader currently passes up to 16 segments (but this is variable) 156 * Normally, the biggest of them is used for the kernel, and the kernel 157 * segment is given to VM first. 158 */ 159 #define VM_PHYSSEG_MAX (16) 160 #define VM_PHYSSEG_STRAT VM_PSTRAT_RANDOM 161 162 /* 163 * Allow supporting Zorro-II memory as lower priority: 164 * 165 * - DEFAULT for Zorro-III memory (presumably 32 bit) 166 * - ZORROII for Zorro-II memory (16 bit, Zorro-II DMA) 167 */ 168 169 #define VM_NFREELIST 2 170 #define VM_FREELIST_DEFAULT 0 171 #define VM_FREELIST_ZORROII 1 172 173 #define __HAVE_PMAP_PHYSSEG 174 175 /* 176 * pmap-specific data stored in the vm_physmem[] array. 177 */ 178 struct pmap_physseg { 179 struct pv_header *pvheader; /* pv table for this seg */ 180 }; 181 182 /* 183 * number of kernel PT pages (initial only, can grow dynamically) 184 */ 185 #define VM_KERNEL_PT_PAGES ((vm_size_t)8) /* XXX: SYSPTSIZE */ 186 #endif /* !_MACHINE_VMPARAM_H_ */ 187