1 /* $NetBSD: vmparam.h,v 1.6 2002/09/14 15:54:02 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 _ARM32_VMPARAM_H_ 37 #define _ARM32_VMPARAM_H_ 38 39 #ifdef _KERNEL 40 41 #include <arm/arm32/vmparam.h> 42 43 /* 44 * Address space constants 45 */ 46 47 /* 48 * The line between user space and kernel space 49 * Mappings >= KERNEL_BASE are constant across all processes 50 */ 51 #define KERNEL_BASE 0xf0000000 52 53 /* Various constants used by the MD code */ 54 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00000000) 55 #define APTE_BASE (KERNEL_BASE + 0x00c00000) 56 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 57 58 /* 59 * The range 0xf1000000 - 0xf6ffffff is available for kernel VM space 60 * OFW sits at 0xf7000000 61 */ 62 #define KERNEL_VM_SIZE 0x06000000 63 64 /* 65 * Override the default pager_map size, there's not enough KVA. 66 */ 67 #define PAGER_MAP_SIZE (4 * 1024 * 1024) 68 69 /* 70 * Size of User Raw I/O map 71 */ 72 73 #define USRIOSIZE 300 74 75 /* XXX max. amount of KVM to be used by buffers. */ 76 #ifndef VM_MAX_KERNEL_BUF 77 #define VM_MAX_KERNEL_BUF \ 78 ((KERNEL_VM_SIZE) * 4 / 10) 79 #endif 80 81 /* virtual sizes (bytes) for various kernel submaps */ 82 83 #define VM_PHYS_SIZE (USRIOSIZE*NBPG) 84 85 /* 86 * max number of non-contig chunks of physical RAM you can have 87 */ 88 89 #define VM_PHYSSEG_MAX 32 90 91 /* 92 * when converting a physical address to a vm_page structure, we 93 * want to use a binary search on the chunks of physical memory 94 * to find our RAM 95 */ 96 97 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 98 99 /* 100 * this indicates that we can't add RAM to the VM system after the 101 * vm system is init'd. 102 */ 103 104 #define VM_PHYSSEG_NOADD 105 106 /* 107 * we support 2 free lists: 108 * 109 * - DEFAULT for all systems 110 * - ISADMA for the ISA DMA range on Sharks only 111 * - RPCDMA for the DMA range on RiscPC's + Kinetic cards 112 */ 113 114 #define VM_NFREELIST 2 115 #define VM_FREELIST_DEFAULT 0 116 #define VM_FREELIST_ISADMA 1 117 #define VM_FREELIST_RPCDMA 1 118 119 #endif /* _KERNEL */ 120 121 #endif /* _ARM32_VMPARAM_H_ */ 122