1 /* $NetBSD: vmparam.h,v 1.10 2001/11/23 18:16:11 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 #ifdef _KERNEL 40 41 #include <arm/arm32/vmparam.h> 42 43 /* 44 * Address space constants 45 */ 46 47 #ifndef HPCARM 48 /* 49 * The line between user space and kernel space 50 * Mappings >= KERNEL_SPACE_START are constant across all processes 51 */ 52 #define KERNEL_SPACE_START 0xf0000000 53 54 /* Various constants used by the MD code*/ 55 #define KERNEL_BASE 0xf0000000 56 #define KERNEL_TEXT_BASE KERNEL_BASE 57 #define ALT_PAGE_TBLS_BASE 0xf0c00000 58 #define KERNEL_VM_BASE 0xf1000000 59 #else /* defined(HPCARM) */ 60 #define KERNEL_SPACE_START 0xc0000000 61 #define KERNEL_BASE 0xc0040000 62 #define KERNEL_TEXT_BASE KERNEL_BASE 63 #define ALT_PAGE_TBLS_BASE 0xc0800000 64 #define KERNEL_VM_BASE 0xc0c00000 65 #endif /* defined(HPCARM) */ 66 67 /* 68 * The Kernel VM Size varies depending on the machine depending on how 69 * much space is needed (and where) for other mappings. 70 * In some cases the chosen value may not be the maximum in order that 71 * we don't waste memory with kernel pages tables as we can't currently 72 * grow the kernel page tables after booting. 73 * You only need to increase these values if you find that the number of 74 * buffers is being limited due to lack of VA space. 75 */ 76 #ifdef HPCARM 77 #define KERNEL_VM_SIZE 0x03000000 78 #endif 79 80 #define PROCESS_PAGE_TBLS_BASE PAGE_TABLE_SPACE_START 81 82 /* 83 * Override the default pager_map size, there's not enough KVA. 84 */ 85 #define PAGER_MAP_SIZE (4 * 1024 * 1024) 86 87 /* 88 * Size of User Raw I/O map 89 */ 90 91 #define USRIOSIZE 300 92 93 /* XXX max. amount of KVM to be used by buffers. */ 94 #ifndef VM_MAX_KERNEL_BUF 95 #define VM_MAX_KERNEL_BUF \ 96 ((VM_MAXKERN_ADDRESS - KERNEL_VM_BASE) * 4 / 10) 97 #endif 98 99 /* virtual sizes (bytes) for various kernel submaps */ 100 101 #define VM_PHYS_SIZE (USRIOSIZE*NBPG) 102 103 /* 104 * max number of non-contig chunks of physical RAM you can have 105 */ 106 107 #define VM_PHYSSEG_MAX 32 108 109 /* 110 * when converting a physical address to a vm_page structure, we 111 * want to use a binary search on the chunks of physical memory 112 * to find our RAM 113 */ 114 115 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 116 117 /* 118 * this indicates that we can't add RAM to the VM system after the 119 * vm system is init'd. 120 */ 121 122 #define VM_PHYSSEG_NOADD 123 124 /* 125 * we support 2 free lists: 126 * 127 * - DEFAULT for all systems 128 * - ISADMA for the ISA DMA range on Sharks only 129 */ 130 131 #define VM_NFREELIST 2 132 #define VM_FREELIST_DEFAULT 0 133 #define VM_FREELIST_ISADMA 1 134 135 #endif /* _KERNEL */ 136 137 #endif /* _HPCARM_VMPARAM_H_ */ 138