vmparam.h revision 1.2.2.4
1 1.2.2.4 nathanw /* $NetBSD: vmparam.h,v 1.2.2.4 2002/04/17 00:02:06 nathanw Exp $ */ 2 1.2.2.2 nathanw 3 1.2.2.2 nathanw /* 4 1.2.2.2 nathanw * Copyright (c) 1988 The Regents of the University of California. 5 1.2.2.2 nathanw * All rights reserved. 6 1.2.2.2 nathanw * 7 1.2.2.2 nathanw * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 nathanw * modification, are permitted provided that the following conditions 9 1.2.2.2 nathanw * are met: 10 1.2.2.2 nathanw * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 nathanw * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 nathanw * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 nathanw * documentation and/or other materials provided with the distribution. 15 1.2.2.2 nathanw * 3. All advertising materials mentioning features or use of this software 16 1.2.2.2 nathanw * must display the following acknowledgement: 17 1.2.2.2 nathanw * This product includes software developed by the University of 18 1.2.2.2 nathanw * California, Berkeley and its contributors. 19 1.2.2.2 nathanw * 4. Neither the name of the University nor the names of its contributors 20 1.2.2.2 nathanw * may be used to endorse or promote products derived from this software 21 1.2.2.2 nathanw * without specific prior written permission. 22 1.2.2.2 nathanw * 23 1.2.2.2 nathanw * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 1.2.2.2 nathanw * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 1.2.2.2 nathanw * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 1.2.2.2 nathanw * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 1.2.2.2 nathanw * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 1.2.2.2 nathanw * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 1.2.2.2 nathanw * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 1.2.2.2 nathanw * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 1.2.2.2 nathanw * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 1.2.2.2 nathanw * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 1.2.2.2 nathanw * SUCH DAMAGE. 34 1.2.2.2 nathanw */ 35 1.2.2.2 nathanw 36 1.2.2.2 nathanw #ifndef _ARM32_VMPARAM_H_ 37 1.2.2.2 nathanw #define _ARM32_VMPARAM_H_ 38 1.2.2.2 nathanw 39 1.2.2.2 nathanw #ifdef _KERNEL 40 1.2.2.2 nathanw 41 1.2.2.2 nathanw #include <arm/arm32/vmparam.h> 42 1.2.2.2 nathanw 43 1.2.2.2 nathanw /* 44 1.2.2.2 nathanw * Address space constants 45 1.2.2.2 nathanw */ 46 1.2.2.2 nathanw 47 1.2.2.2 nathanw /* 48 1.2.2.2 nathanw * The line between user space and kernel space 49 1.2.2.3 nathanw * Mappings >= KERNEL_BASE are constant across all processes 50 1.2.2.2 nathanw */ 51 1.2.2.3 nathanw #define KERNEL_BASE 0xf0000000 52 1.2.2.2 nathanw 53 1.2.2.2 nathanw /* Various constants used by the MD code*/ 54 1.2.2.3 nathanw #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00000000) 55 1.2.2.3 nathanw #define APTE_BASE (KERNEL_BASE + 0x00c00000) 56 1.2.2.3 nathanw #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 57 1.2.2.2 nathanw /* 58 1.2.2.2 nathanw * The Kernel VM Size varies depending on the machine depending on how 59 1.2.2.2 nathanw * much space is needed (and where) for other mappings. 60 1.2.2.2 nathanw * In some cases the chosen value may not be the maximum in order that 61 1.2.2.2 nathanw * we don't waste memory with kernel pages tables as we can't currently 62 1.2.2.2 nathanw * grow the kernel page tables after booting. 63 1.2.2.2 nathanw * You only need to increase these values if you find that the number of 64 1.2.2.2 nathanw * buffers is being limited due to lack of VA space. 65 1.2.2.2 nathanw */ 66 1.2.2.2 nathanw /* 67 1.2.2.2 nathanw * The range 0xf1000000 - 0xf5ffffff is available for kernel VM space 68 1.2.2.2 nathanw * Fixed mappings exist from 0xf6000000 - 0xffffffff 69 1.2.2.2 nathanw */ 70 1.2.2.2 nathanw #define KERNEL_VM_SIZE 0x05000000 71 1.2.2.2 nathanw 72 1.2.2.2 nathanw /* 73 1.2.2.2 nathanw * Override the default pager_map size, there's not enough KVA. 74 1.2.2.2 nathanw */ 75 1.2.2.2 nathanw #define PAGER_MAP_SIZE (4 * 1024 * 1024) 76 1.2.2.2 nathanw 77 1.2.2.2 nathanw /* 78 1.2.2.2 nathanw * Size of User Raw I/O map 79 1.2.2.2 nathanw */ 80 1.2.2.2 nathanw 81 1.2.2.2 nathanw #define USRIOSIZE 300 82 1.2.2.2 nathanw 83 1.2.2.2 nathanw /* XXX max. amount of KVM to be used by buffers. */ 84 1.2.2.2 nathanw #ifndef VM_MAX_KERNEL_BUF 85 1.2.2.2 nathanw #define VM_MAX_KERNEL_BUF \ 86 1.2.2.3 nathanw ((KERNEL_VM_SIZE) * 4 / 10) 87 1.2.2.2 nathanw #endif 88 1.2.2.2 nathanw 89 1.2.2.2 nathanw /* virtual sizes (bytes) for various kernel submaps */ 90 1.2.2.2 nathanw 91 1.2.2.2 nathanw #define VM_PHYS_SIZE (USRIOSIZE*NBPG) 92 1.2.2.2 nathanw 93 1.2.2.2 nathanw /* 94 1.2.2.2 nathanw * max number of non-contig chunks of physical RAM you can have 95 1.2.2.2 nathanw */ 96 1.2.2.2 nathanw 97 1.2.2.2 nathanw #define VM_PHYSSEG_MAX 32 98 1.2.2.2 nathanw 99 1.2.2.2 nathanw /* 100 1.2.2.2 nathanw * when converting a physical address to a vm_page structure, we 101 1.2.2.2 nathanw * want to use a binary search on the chunks of physical memory 102 1.2.2.2 nathanw * to find our RAM 103 1.2.2.2 nathanw */ 104 1.2.2.2 nathanw 105 1.2.2.2 nathanw #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 106 1.2.2.2 nathanw 107 1.2.2.2 nathanw /* 108 1.2.2.2 nathanw * this indicates that we can't add RAM to the VM system after the 109 1.2.2.2 nathanw * vm system is init'd. 110 1.2.2.2 nathanw */ 111 1.2.2.2 nathanw 112 1.2.2.2 nathanw #define VM_PHYSSEG_NOADD 113 1.2.2.2 nathanw 114 1.2.2.2 nathanw /* 115 1.2.2.2 nathanw * we support 2 free lists: 116 1.2.2.2 nathanw * 117 1.2.2.2 nathanw * - DEFAULT for all systems 118 1.2.2.2 nathanw * - ISADMA for the ISA DMA range on Sharks only 119 1.2.2.2 nathanw * - RPCDMA for the DMA range on RiscPC's + Kinetic cards 120 1.2.2.2 nathanw */ 121 1.2.2.2 nathanw 122 1.2.2.2 nathanw #define VM_NFREELIST 2 123 1.2.2.2 nathanw #define VM_FREELIST_DEFAULT 0 124 1.2.2.2 nathanw #define VM_FREELIST_ISADMA 1 125 1.2.2.2 nathanw #define VM_FREELIST_RPCDMA 1 126 1.2.2.2 nathanw 127 1.2.2.2 nathanw #endif /* _KERNEL */ 128 1.2.2.2 nathanw 129 1.2.2.2 nathanw #endif /* _ARM32_VMPARAM_H_ */ 130
Indexes created Sun Oct 19 16:10:00 GMT 2025