vmparam.h revision 1.3
1 /* $NetBSD: vmparam.h,v 1.3 2018/04/01 04:35:03 ryo Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _AARCH64_VMPARAM_H_ 33 #define _AARCH64_VMPARAM_H_ 34 35 #ifdef __aarch64__ 36 37 #define __USE_TOPDOWN_VM 38 39 /* 40 * AARCH64 supports 3 page sizes: 4KB, 16KB, 64KB. Each page table can 41 * even have its own page size. 42 */ 43 44 #ifdef AARCH64_PAGE_SHIFT 45 #if (1 << AARCH64_PAGE_SHIFT) & ~0x141000 46 #error AARCH64_PAGE_SHIFT contains an unsupported value. 47 #endif 48 #define PAGE_SHIFT AARCH64_PAGE_SHIFT 49 #else 50 #define PAGE_SHIFT 12 51 #endif 52 #define PAGE_SIZE (1 << PAGE_SHIFT) 53 #define PAGE_MASK (PAGE_SIZE - 1) 54 55 #if PAGE_SHIFT <= 14 56 #define USPACE 32768 57 #else 58 #define USPACE 65536 59 #endif 60 #define UPAGES (USPACE >> PAGE_SHIFT) 61 62 /* 63 * USRSTACK is the top (end) of the user stack. The user VA space is a 64 * 48-bit address space starting at 0. Place the stack at its top end. 65 */ 66 #define USRSTACK VM_MAXUSER_ADDRESS 67 68 #ifndef MAXTSIZ 69 #define MAXTSIZ (1L << 30) /* max text size (1GB) */ 70 #endif 71 72 #ifndef MAXDSIZ 73 #define MAXDSIZ (1L << 36) /* max data size (64GB) */ 74 #endif 75 76 #ifndef MAXSSIZ 77 #define MAXSSIZ (1L << 26) /* max stack size (64MB) */ 78 #endif 79 80 #ifndef DFLDSIZ 81 #define DFLDSIZ (1L << 32) /* default data size (4GB) */ 82 #endif 83 84 #ifndef DFLSSIZ 85 #define DFLSSIZ (1L << 23) /* default stack size (8MB) */ 86 #endif 87 88 #define USRSTACK32 VM_MAXUSER_ADDRESS32 89 90 #ifndef MAXTSIZ32 91 #define MAXTSIZ32 (1L << 26) /* 32bit max text size (64MB) */ 92 #endif 93 94 #ifndef MAXDSIZ32 95 #define MAXDSIZ32 (1536*1024*1024) /* max data size */ 96 #endif 97 98 #ifndef MAXSSIZ32 99 #define MAXSSIZ32 (64*1024*1024) /* max stack size */ 100 #endif 101 102 #ifndef DFLDSIZ32 103 #define DFLDSIZ32 (1L << 27) /* 32bit default data size (128MB) */ 104 #endif 105 106 #ifndef DFLSSIZ32 107 #define DFLSSIZ32 (1L << 21) /* 32bit default stack size (2MB) */ 108 #endif 109 110 #define VM_MIN_ADDRESS ((vaddr_t) 0x0) 111 #define VM_MAXUSER_ADDRESS ((vaddr_t) (1L << 48) - PAGE_SIZE) 112 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 113 114 #define VM_MAXUSER_ADDRESS32 ((vaddr_t) 0x7ffff000) 115 116 /* 117 * Give ourselves 64GB of mappable kernel space. That leaves the rest 118 * to be user for directly mapped (block addressable) addresses. 119 */ 120 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t) 0xffffffc000000000L) 121 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t) 0xffffffffffe00000L) 122 123 /* 124 * last 254MB of kernel vm area (0xfffffffff0000000-0xffffffffffe00000) 125 * may be used for devmap. address must be aligned 2MB (L2_SIZE) 126 * see also aarch64/pmap.c:pmap_devmap_* 127 */ 128 #define VM_KERNEL_IO_ADDRESS 0xfffffffff0000000L 129 130 /* virtual sizes (bytes) for various kernel submaps */ 131 #define USRIOSIZE (PAGE_SIZE / 8) 132 #define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE) 133 134 /* 135 * Since we have the address space, we map all of physical memory (RAM) 136 * using block page table entries. 137 */ 138 #define AARCH64_KSEG_MASK ((vaddr_t) 0xffff000000000000L) 139 #define AARCH64_KSEG_SIZE (1UL << 39) /* 512GB */ 140 #define AARCH64_KSEG_START AARCH64_KSEG_MASK 141 #define AARCH64_KSEG_END (AARCH64_KSEG_START + AARCH64_KSEG_SIZE) 142 #define AARCH64_KMEMORY_BASE AARCH64_KSEG_MASK 143 #define AARCH64_KVA_P(va) (((vaddr_t) (va) & AARCH64_KSEG_MASK) != 0) 144 #define AARCH64_PA_TO_KVA(pa) ((vaddr_t) ((pa) | AARCH64_KSEG_START)) 145 #define AARCH64_KVA_TO_PA(va) ((paddr_t) ((va) & ~AARCH64_KSEG_MASK)) 146 147 /* */ 148 #define VM_PHYSSEG_MAX 16 /* XXX */ 149 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 150 151 #define VM_NFREELIST 3 152 #define VM_FREELIST_DEFAULT 0 153 #define VM_FREELIST_FIRST4GB 1 154 #define VM_FREELIST_HIGHMEM 2 155 156 #elif defined(__arm__) 157 158 #include <arm/vmparam.h> 159 160 #endif /* __aarch64__/__arm__ */ 161 162 #endif /* _AARCH64_VMPARAM_H_ */ 163
Indexes created Mon Sep 29 21:09:56 GMT 2025