1 /* $NetBSD: vmparam.h,v 1.7 2001/11/11 16:44:16 thorpej 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 #include <arm/arm32/vmparam.h> 43 44 #define USRTEXT VM_MIN_ADDRESS 45 #define USRSTACK VM_MAXUSER_ADDRESS 46 47 /* 48 * Note that MAXTSIZ mustn't be greater than 32M. Otherwise you'd have 49 * to change the compiler to not generate bl instructions 50 */ 51 #define MAXTSIZ (16*1024*1024) /* max text size */ 52 #ifndef DFLDSIZ 53 #define DFLDSIZ (128*1024*1024) /* initial data size limit */ 54 #endif 55 #ifndef MAXDSIZ 56 #define MAXDSIZ (512*1024*1024) /* max data size */ 57 #endif 58 #ifndef DFLSSIZ 59 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 60 #endif 61 #ifndef MAXSSIZ 62 #define MAXSSIZ (8*1024*1024) /* max stack size */ 63 #endif 64 65 /* 66 * Size of shared memory map 67 */ 68 #ifndef SHMMAXPGS 69 #define SHMMAXPGS 1024 70 #endif 71 72 /* 73 * The time for a process to be blocked before being very swappable. 74 * This is a number of seconds which the system takes as being a non-trivial 75 * amount of real time. You probably shouldn't change this; 76 * it is used in subtle ways (fractions and multiples of it are, that is, like 77 * half of a `long time'', almost a long time, etc.) 78 * It is related to human patience and other factors which don't really 79 * change over time. 80 */ 81 #define MAXSLP 20 82 83 /* 84 * Address space constants 85 */ 86 87 /* total number of page table entries to map 4GB * size of each entry*/ 88 #define PAGE_TABLE_SPACE ((1 << (32 - PGSHIFT)) * sizeof(pt_entry_t)) 89 90 #ifndef HPCARM 91 /* 92 * The line between user space and kernel space 93 * Mappings >= KERNEL_SPACE_START are constant across all processes 94 */ 95 #define KERNEL_SPACE_START 0xf0000000 96 97 /* Address where the page tables are mapped */ 98 #define PAGE_TABLE_SPACE_START (KERNEL_SPACE_START - PAGE_TABLE_SPACE) 99 100 /* Various constants used by the MD code*/ 101 #define KERNEL_BASE 0xf0000000 102 #define KERNEL_TEXT_BASE KERNEL_BASE 103 #define ALT_PAGE_TBLS_BASE 0xf0c00000 104 #define KERNEL_VM_BASE 0xf1000000 105 #else /* defined(HPCARM) */ 106 #define KERNEL_SPACE_START 0xc0000000 107 #define PAGE_TABLE_SPACE_START (KERNEL_SPACE_START - PAGE_TABLE_SPACE) 108 #define KERNEL_BASE 0xc0040000 109 #define KERNEL_TEXT_BASE KERNEL_BASE 110 #define ALT_PAGE_TBLS_BASE 0xc0800000 111 #define KERNEL_VM_BASE 0xc0c00000 112 #endif /* defined(HPCARM) */ 113 114 /* 115 * The Kernel VM Size varies depending on the machine depending on how 116 * much space is needed (and where) for other mappings. 117 * In some cases the chosen value may not be the maximum in order that 118 * we don't waste memory with kernel pages tables as we can't currently 119 * grow the kernel page tables after booting. 120 * You only need to increase these values if you find that the number of 121 * buffers is being limited due to lack of VA space. 122 */ 123 #ifdef HPCARM 124 #define KERNEL_VM_SIZE 0x03000000 125 #endif 126 127 #define PROCESS_PAGE_TBLS_BASE PAGE_TABLE_SPACE_START 128 129 /* 130 * Override the default pager_map size, there's not enough KVA. 131 */ 132 #define PAGER_MAP_SIZE (4 * 1024 * 1024) 133 134 /* 135 * Mach derived constants 136 */ 137 138 #define VM_MIN_ADDRESS ((vm_offset_t)0x00001000) 139 #define VM_MAXUSER_ADDRESS ((vm_offset_t)(PAGE_TABLE_SPACE_START - UPAGES * NBPG)) 140 #define VM_MAX_ADDRESS ((vm_offset_t)(PAGE_TABLE_SPACE_START + (KERNEL_SPACE_START >> PGSHIFT) * sizeof(pt_entry_t))) 141 142 #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_TEXT_BASE) 143 #define VM_MAXKERN_ADDRESS ((vm_offset_t)(KERNEL_VM_BASE + KERNEL_VM_SIZE)) 144 #define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)0xffffffff) 145 146 /* 147 * Size of User Raw I/O map 148 */ 149 150 #define USRIOSIZE 300 151 152 /* XXX max. amount of KVM to be used by buffers. */ 153 #ifndef VM_MAX_KERNEL_BUF 154 #define VM_MAX_KERNEL_BUF \ 155 ((VM_MAXKERN_ADDRESS - KERNEL_VM_BASE) * 4 / 10) 156 #endif 157 158 /* virtual sizes (bytes) for various kernel submaps */ 159 160 #define VM_PHYS_SIZE (USRIOSIZE*NBPG) 161 162 /* 163 * max number of non-contig chunks of physical RAM you can have 164 */ 165 166 #define VM_PHYSSEG_MAX 32 167 168 /* 169 * when converting a physical address to a vm_page structure, we 170 * want to use a binary search on the chunks of physical memory 171 * to find our RAM 172 */ 173 174 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 175 176 /* 177 * this indicates that we can't add RAM to the VM system after the 178 * vm system is init'd. 179 */ 180 181 #define VM_PHYSSEG_NOADD 182 183 /* 184 * we support 2 free lists: 185 * 186 * - DEFAULT for all systems 187 * - ISADMA for the ISA DMA range on Sharks only 188 */ 189 190 #define VM_NFREELIST 2 191 #define VM_FREELIST_DEFAULT 0 192 #define VM_FREELIST_ISADMA 1 193 194 /* 195 * define structure pmap_physseg: there is one of these structures 196 * for each chunk of noncontig RAM you have. 197 */ 198 199 #define __HAVE_PMAP_PHYSSEG 200 201 struct pmap_physseg { 202 struct pv_head *pvhead; /* pv_entry array */ 203 char *attrs; /* attrs array */ 204 }; 205 206 #endif /* _HPCARM_VMPARAM_H_ */ 207 208 /* End of vmparam.h */ 209