1 /* $NetBSD: vmparam.h,v 1.5 2001/08/02 14:45:40 toshii Exp $ */ 2 3 /* 4 * Copyright (c) 1988 The Regents of the University of California. 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. 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 #ifndef _HPCARM_VMPARAM_H_ 37 #define _HPCARM_VMPARAM_H_ 38 39 /* for pt_entry_t definition */ 40 #include <machine/pte.h> 41 42 #define USRTEXT VM_MIN_ADDRESS 43 #define USRSTACK VM_MAXUSER_ADDRESS 44 45 /* 46 * Note that MAXTSIZ mustn't be greater than 32M. Otherwise you'd have 47 * to change the compiler to not generate bl instructions 48 */ 49 #define MAXTSIZ (16*1024*1024) /* max text size */ 50 #ifndef DFLDSIZ 51 #define DFLDSIZ (128*1024*1024) /* initial data size limit */ 52 #endif 53 #ifndef MAXDSIZ 54 #define MAXDSIZ (512*1024*1024) /* max data size */ 55 #endif 56 #ifndef DFLSSIZ 57 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 58 #endif 59 #ifndef MAXSSIZ 60 #define MAXSSIZ (8*1024*1024) /* max stack size */ 61 #endif 62 63 /* 64 * Size of shared memory map 65 */ 66 #ifndef SHMMAXPGS 67 #define SHMMAXPGS 1024 68 #endif 69 70 /* 71 * The time for a process to be blocked before being very swappable. 72 * This is a number of seconds which the system takes as being a non-trivial 73 * amount of real time. You probably shouldn't change this; 74 * it is used in subtle ways (fractions and multiples of it are, that is, like 75 * half of a `long time'', almost a long time, etc.) 76 * It is related to human patience and other factors which don't really 77 * change over time. 78 */ 79 #define MAXSLP 20 80 81 /* 82 * Address space constants 83 */ 84 85 /* total number of page table entries to map 4GB * size of each entry*/ 86 #define PAGE_TABLE_SPACE ((1 << (32 - PGSHIFT)) * sizeof(pt_entry_t)) 87 88 #ifndef HPCARM 89 /* 90 * The line between user space and kernel space 91 * Mappings >= KERNEL_SPACE_START are constant across all processes 92 */ 93 #define KERNEL_SPACE_START 0xf0000000 94 95 /* Address where the page tables are mapped */ 96 #define PAGE_TABLE_SPACE_START (KERNEL_SPACE_START - PAGE_TABLE_SPACE) 97 98 /* Various constants used by the MD code*/ 99 #define KERNEL_BASE 0xf0000000 100 #define KERNEL_TEXT_BASE KERNEL_BASE 101 #define ALT_PAGE_TBLS_BASE 0xf0c00000 102 #define KERNEL_VM_BASE 0xf1000000 103 #else /* defined(HPCARM) */ 104 #define KERNEL_SPACE_START 0xc0000000 105 #define PAGE_TABLE_SPACE_START (KERNEL_SPACE_START - PAGE_TABLE_SPACE) 106 #define KERNEL_BASE 0xc0040000 107 #define KERNEL_TEXT_BASE KERNEL_BASE 108 #define ALT_PAGE_TBLS_BASE 0xc0800000 109 #define KERNEL_VM_BASE 0xc0c00000 110 #endif /* defined(HPCARM) */ 111 112 /* 113 * The Kernel VM Size varies depending on the machine depending on how 114 * much space is needed (and where) for other mappings. 115 * In some cases the chosen value may not be the maximum in order that 116 * we don't waste memory with kernel pages tables as we can't currently 117 * grow the kernel page tables after booting. 118 * You only need to increase these values if you find that the number of 119 * buffers is being limited due to lack of VA space. 120 */ 121 #ifdef HPCARM 122 #define KERNEL_VM_SIZE 0x03000000 123 #endif 124 125 #define PROCESS_PAGE_TBLS_BASE PAGE_TABLE_SPACE_START 126 127 /* 128 * Override the default pager_map size, there's not enough KVA. 129 */ 130 #define PAGER_MAP_SIZE (4 * 1024 * 1024) 131 132 /* 133 * Mach derived constants 134 */ 135 136 #define VM_MIN_ADDRESS ((vm_offset_t)0x00001000) 137 #define VM_MAXUSER_ADDRESS ((vm_offset_t)(PAGE_TABLE_SPACE_START - UPAGES * NBPG)) 138 #define VM_MAX_ADDRESS ((vm_offset_t)(PAGE_TABLE_SPACE_START + (KERNEL_SPACE_START >> PGSHIFT) * sizeof(pt_entry_t))) 139 140 #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_TEXT_BASE) 141 #define VM_MAXKERN_ADDRESS ((vm_offset_t)(KERNEL_VM_BASE + KERNEL_VM_SIZE)) 142 #define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)0xffffffff) 143 144 /* 145 * Size of User Raw I/O map 146 */ 147 148 #define USRIOSIZE 300 149 150 /* XXX max. amount of KVM to be used by buffers. */ 151 #ifndef VM_MAX_KERNEL_BUF 152 #define VM_MAX_KERNEL_BUF \ 153 ((VM_MAXKERN_ADDRESS - KERNEL_VM_BASE) * 4 / 10) 154 #endif 155 156 /* virtual sizes (bytes) for various kernel submaps */ 157 158 #define VM_PHYS_SIZE (USRIOSIZE*NBPG) 159 160 /* 161 * max number of non-contig chunks of physical RAM you can have 162 */ 163 164 #define VM_PHYSSEG_MAX 32 165 166 /* 167 * when converting a physical address to a vm_page structure, we 168 * want to use a binary search on the chunks of physical memory 169 * to find our RAM 170 */ 171 172 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 173 174 /* 175 * this indicates that we can't add RAM to the VM system after the 176 * vm system is init'd. 177 */ 178 179 #define VM_PHYSSEG_NOADD 180 181 /* 182 * we support 2 free lists: 183 * 184 * - DEFAULT for all systems 185 * - ISADMA for the ISA DMA range on Sharks only 186 */ 187 188 #define VM_NFREELIST 2 189 #define VM_FREELIST_DEFAULT 0 190 #define VM_FREELIST_ISADMA 1 191 192 /* 193 * define structure pmap_physseg: there is one of these structures 194 * for each chunk of noncontig RAM you have. 195 */ 196 197 #define __HAVE_PMAP_PHYSSEG 198 199 struct pmap_physseg { 200 struct pv_entry *pvent; /* pv_entry array */ 201 char *attrs; /* attrs array */ 202 }; 203 204 #endif /* _HPCARM_VMPARAM_H_ */ 205 206 /* End of vmparam.h */ 207