1 /* $NetBSD: vmparam.h,v 1.25 2008/04/27 18:58:46 matt 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #ifndef _ARM32_VMPARAM_H_ 33 #define _ARM32_VMPARAM_H_ 34 35 #ifdef _KERNEL 36 37 #include <arm/arm32/vmparam.h> 38 39 /* 40 * Address space constants 41 */ 42 43 /* 44 * The line between user space and kernel space 45 * Mappings >= KERNEL_BASE are constant across all processes 46 */ 47 #ifdef KERNEL_BASE_EXT 48 #define KERNEL_BASE KERNEL_BASE_EXT 49 #else 50 #define KERNEL_BASE 0x80000000 51 #endif 52 53 /* 54 * Override the default pager_map size, there's not enough KVA. 55 */ 56 #define PAGER_MAP_DEFAULT_SIZE (4 * 1024 * 1024) 57 58 /* 59 * Size of User Raw I/O map 60 */ 61 62 #define USRIOSIZE 300 63 64 /* virtual sizes (bytes) for various kernel submaps */ 65 66 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 67 68 /* 69 * max number of non-contig chunks of physical RAM you can have 70 */ 71 72 #define VM_PHYSSEG_MAX 32 73 74 /* 75 * when converting a physical address to a vm_page structure, we 76 * want to use a binary search on the chunks of physical memory 77 * to find our RAM 78 */ 79 80 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 81 82 /* 83 * this indicates that we can't add RAM to the VM system after the 84 * vm system is init'd. 85 */ 86 87 #define VM_PHYSSEG_NOADD 88 89 /* 90 * we support 2 free lists: 91 * 92 * - DEFAULT for all systems 93 * - ISADMA for the ISA DMA range on Sharks only 94 */ 95 96 #define VM_NFREELIST 2 97 #define VM_FREELIST_DEFAULT 0 98 #define VM_FREELIST_ISADMA 1 99 100 #endif /* _KERNEL */ 101 102 #endif /* _ARM32_VMPARAM_H_ */ 103