vmparam.h revision 1.7
1 /* $NetBSD: vmparam.h,v 1.7 2018/10/12 01:28:58 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 * Default pager_map of 16MB is small and we have plenty of VA to burn. 41 */ 42 #define PAGER_MAP_DEFAULT_SIZE (512 * 1024 * 1024) 43 44 /* 45 * AARCH64 supports 3 page sizes: 4KB, 16KB, 64KB. Each page table can 46 * even have its own page size. 47 */ 48 49 #ifdef AARCH64_PAGE_SHIFT 50 #if (1 << AARCH64_PAGE_SHIFT) & ~0x141000 51 #error AARCH64_PAGE_SHIFT contains an unsupported value. 52 #endif 53 #define PAGE_SHIFT AARCH64_PAGE_SHIFT 54 #else 55 #define PAGE_SHIFT 12 56 #endif 57 #define PAGE_SIZE (1 << PAGE_SHIFT) 58 #define PAGE_MASK (PAGE_SIZE - 1) 59 60 #if PAGE_SHIFT <= 14 61 #define USPACE 32768 62 #else 63 #define USPACE 65536 64 #endif 65 #define UPAGES (USPACE >> PAGE_SHIFT) 66 67 /* 68 * USRSTACK is the top (end) of the user stack. The user VA space is a 69 * 48-bit address space starting at 0. Place the stack at its top end. 70 */ 71 #define USRSTACK VM_MAXUSER_ADDRESS 72 73 #ifndef MAXTSIZ 74 #define MAXTSIZ (1L << 30) /* max text size (1GB) */ 75 #endif 76 77 #ifndef MAXDSIZ 78 #define MAXDSIZ (1L << 36) /* max data size (64GB) */ 79 #endif 80 81 #ifndef MAXSSIZ 82 #define MAXSSIZ (1L << 26) /* max stack size (64MB) */ 83 #endif 84 85 #ifndef DFLDSIZ 86 #define DFLDSIZ (1L << 32) /* default data size (4GB) */ 87 #endif 88 89 #ifndef DFLSSIZ 90 #define DFLSSIZ (1L << 23) /* default stack size (8MB) */ 91 #endif 92 93 #define USRSTACK32 VM_MAXUSER_ADDRESS32 94 95 #ifndef MAXTSIZ32 96 #define MAXTSIZ32 (1L << 26) /* 32bit max text size (64MB) */ 97 #endif 98 99 #ifndef MAXDSIZ32 100 #define MAXDSIZ32 (3U*1024*1024*1024) /* max data size */ 101 #endif 102 103 #ifndef MAXSSIZ32 104 #define MAXSSIZ32 (64*1024*1024) /* max stack size */ 105 #endif 106 107 #ifndef DFLDSIZ32 108 #define DFLDSIZ32 (1L << 27) /* 32bit default data size (128MB) */ 109 #endif 110 111 #ifndef DFLSSIZ32 112 #define DFLSSIZ32 (1L << 21) /* 32bit default stack size (2MB) */ 113 #endif 114 115 #define VM_MIN_ADDRESS ((vaddr_t) 0x0) 116 #define VM_MAXUSER_ADDRESS ((vaddr_t) (1L << 48) - PAGE_SIZE) 117 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 118 119 #define VM_MAXUSER_ADDRESS32 ((vaddr_t) 0xfffff000) 120 121 /* 122 * Give ourselves 64GB of mappable kernel space. That leaves the rest 123 * to be user for directly mapped (block addressable) addresses. 124 */ 125 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t) 0xffffffc000000000L) 126 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t) 0xffffffffffe00000L) 127 128 /* 129 * last 254MB of kernel vm area (0xfffffffff0000000-0xffffffffffe00000) 130 * may be used for devmap. address must be aligned 2MB (L2_SIZE) 131 * see also aarch64/pmap.c:pmap_devmap_* 132 */ 133 #define VM_KERNEL_IO_ADDRESS 0xfffffffff0000000L 134 #define VM_KERNEL_IO_SIZE (VM_MAX_KERNEL_ADDRESS - VM_KERNEL_IO_ADDRESS) 135 136 /* virtual sizes (bytes) for various kernel submaps */ 137 #define USRIOSIZE (PAGE_SIZE / 8) 138 #define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE) 139 140 #define VM_DEFAULT_ADDRESS32_TOPDOWN(da, sz) \ 141 trunc_page(USRSTACK32 - MAXSSIZ32 - (sz) - user_stack_guard_size) 142 #define VM_DEFAULT_ADDRESS32_BOTTOMUP(da, sz) \ 143 round_page((vaddr_t)(da) + (vsize_t)MAXDSIZ32) 144 145 /* 146 * Since we have the address space, we map all of physical memory (RAM) 147 * using block page table entries. 148 */ 149 #define AARCH64_KSEG_MASK ((vaddr_t) 0xffff000000000000L) 150 #define AARCH64_KSEG_SIZE (1UL << 39) /* 512GB */ 151 #define AARCH64_KSEG_START AARCH64_KSEG_MASK 152 #define AARCH64_KSEG_END (AARCH64_KSEG_START + AARCH64_KSEG_SIZE) 153 #define AARCH64_KMEMORY_BASE AARCH64_KSEG_MASK 154 #define AARCH64_KVA_P(va) (((vaddr_t) (va) & AARCH64_KSEG_MASK) != 0) 155 #define AARCH64_PA_TO_KVA(pa) ((vaddr_t) ((pa) | AARCH64_KSEG_START)) 156 #define AARCH64_KVA_TO_PA(va) ((paddr_t) ((va) & ~AARCH64_KSEG_MASK)) 157 158 /* */ 159 #define VM_PHYSSEG_MAX 64 /* XXX */ 160 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 161 162 #define VM_NFREELIST 3 163 #define VM_FREELIST_DEFAULT 0 164 #define VM_FREELIST_FIRST4GB 1 165 #define VM_FREELIST_HIGHMEM 2 166 167 #elif defined(__arm__) 168 169 #include <arm/vmparam.h> 170 171 #endif /* __aarch64__/__arm__ */ 172 173 #endif /* _AARCH64_VMPARAM_H_ */ 174
Indexes created Sun Sep 28 16:09:52 GMT 2025