1 /* $NetBSD: vmparam.h,v 1.33 2019/03/27 17:15:29 christos 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 _EVBARM_VMPARAM_H_ 33 #define _EVBARM_VMPARAM_H_ 34 35 #ifdef __aarch64__ 36 37 #include <aarch64/vmparam.h> 38 39 #else 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 #ifdef KERNEL_BASE_EXT 52 #define KERNEL_BASE KERNEL_BASE_EXT 53 #else 54 #define KERNEL_BASE 0x80000000 55 #endif 56 57 /* 58 * Size of User Raw I/O map 59 */ 60 61 #define USRIOSIZE 300 62 63 /* virtual sizes (bytes) for various kernel submaps */ 64 65 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 66 67 /* 68 * max number of non-contig chunks of physical RAM you can have 69 */ 70 71 #define VM_PHYSSEG_MAX 32 72 73 /* 74 * when converting a physical address to a vm_page structure, we 75 * want to use a binary search on the chunks of physical memory 76 * to find our RAM 77 */ 78 79 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 80 81 /* 82 * we support 3 free lists: 83 * 84 * - DEFAULT for all systems 85 * - ISADMA for the ISA DMA range (could be unused) 86 * - DIRECTMAP for systems with direct KVA mapped pages 87 */ 88 89 #define VM_NFREELIST 3 90 #define VM_FREELIST_DEFAULT 0 91 #define VM_FREELIST_ISADMA 1 92 #define VM_FREELIST_DIRECTMAP 2 93 94 #endif 95 96 #endif /* _EVBARM_VMPARAM_H_ */ 97