| 1 | /* $NetBSD: vmparam.h,v 1.38 2016/11/19 09:22:03 maxv Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1990 The Regents of the University of California. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to Berkeley by |
| 8 | * William Jolitz. |
| 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 | * 3. Neither the name of the University nor the names of its contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | * |
| 34 | * @(#)vmparam.h 5.9 (Berkeley) 5/12/91 |
| 35 | */ |
| 36 | |
| 37 | #ifndef _X86_64_VMPARAM_H_ |
| 38 | #define _X86_64_VMPARAM_H_ |
| 39 | |
| 40 | #ifdef __x86_64__ |
| 41 | |
| 42 | #include <sys/mutex.h> |
| 43 | #ifdef _KERNEL_OPT |
| 44 | #include "opt_xen.h" |
| 45 | #endif |
| 46 | |
| 47 | /* |
| 48 | * Machine dependent constants for 386. |
| 49 | */ |
| 50 | |
| 51 | /* |
| 52 | * Page size on the amd64 s not variable in the traditional sense. |
| 53 | * We override the PAGE_* definitions to compile-time constants. |
| 54 | */ |
| 55 | #define PAGE_SHIFT 12 |
| 56 | #define PAGE_SIZE (1 << PAGE_SHIFT) |
| 57 | #define PAGE_MASK (PAGE_SIZE - 1) |
| 58 | |
| 59 | /* |
| 60 | * USRSTACK is the top (end) of the user stack. Immediately above the |
| 61 | * user stack resides the user structure, which is UPAGES long and contains |
| 62 | * the kernel stack. |
| 63 | * |
| 64 | * Immediately after the user structure is the page table map, and then |
| 65 | * kernel address space. |
| 66 | */ |
| 67 | #define USRSTACK VM_MAXUSER_ADDRESS |
| 68 | |
| 69 | #define USRSTACK32 VM_MAXUSER_ADDRESS32 |
| 70 | |
| 71 | /* |
| 72 | * Virtual memory related constants, all in bytes |
| 73 | */ |
| 74 | #define MAXTSIZ (256*1024*1024) /* max text size */ |
| 75 | #ifndef DFLDSIZ |
| 76 | #define DFLDSIZ (256*1024*1024) /* initial data size limit */ |
| 77 | #endif |
| 78 | #ifndef MAXDSIZ |
| 79 | #define MAXDSIZ (8L*1024*1024*1024) /* max data size */ |
| 80 | #endif |
| 81 | #ifndef DFLSSIZ |
| 82 | #define DFLSSIZ (4*1024*1024) /* initial stack size limit */ |
| 83 | #endif |
| 84 | #ifndef MAXSSIZ |
| 85 | #define MAXSSIZ (128*1024*1024) /* max stack size */ |
| 86 | #endif |
| 87 | |
| 88 | /* |
| 89 | * 32bit memory related constants. |
| 90 | */ |
| 91 | |
| 92 | #define MAXTSIZ32 (256*1024*1024) |
| 93 | #ifndef DFLDSIZ32 |
| 94 | #define DFLDSIZ32 (256*1024*1024) /* initial data size limit */ |
| 95 | #endif |
| 96 | #ifndef MAXDSIZ32 |
| 97 | #define MAXDSIZ32 (3U*1024*1024*1024) /* max data size */ |
| 98 | #endif |
| 99 | #ifndef DFLSSIZ32 |
| 100 | #define DFLSSIZ32 (2*1024*1024) /* initial stack size limit */ |
| 101 | #endif |
| 102 | #ifndef MAXSSIZ32 |
| 103 | #define MAXSSIZ32 (64*1024*1024) /* max stack size */ |
| 104 | #endif |
| 105 | |
| 106 | /* |
| 107 | * Size of User Raw I/O map |
| 108 | */ |
| 109 | #define USRIOSIZE 300 |
| 110 | |
| 111 | /* |
| 112 | * Mach derived constants |
| 113 | */ |
| 114 | |
| 115 | /* user/kernel map constants */ |
| 116 | #define VM_MIN_ADDRESS 0 |
| 117 | #define VM_MAXUSER_ADDRESS (0x00007f8000000000 - PAGE_SIZE) |
| 118 | #define VM_MAX_ADDRESS 0x00007fbfdfeff000 |
| 119 | #ifndef XEN |
| 120 | #define VM_MIN_KERNEL_ADDRESS 0xffff800000000000 |
| 121 | #else /* XEN */ |
| 122 | #define VM_MIN_KERNEL_ADDRESS 0xffffa00000000000 |
| 123 | #endif |
| 124 | #define VM_MAX_KERNEL_ADDRESS 0xfffffe8000000000 |
| 125 | |
| 126 | #define VM_MAXUSER_ADDRESS32 0xfffff000 |
| 127 | |
| 128 | /* |
| 129 | * The address to which unspecified mapping requests default |
| 130 | */ |
| 131 | #ifdef _KERNEL_OPT |
| 132 | #include "opt_uvm.h" |
| 133 | #endif |
| 134 | #define __USE_TOPDOWN_VM |
| 135 | |
| 136 | #define VM_DEFAULT_ADDRESS_TOPDOWN(da, sz) \ |
| 137 | trunc_page(USRSTACK - MAXSSIZ - (sz)) |
| 138 | #define VM_DEFAULT_ADDRESS_BOTTOMUP(da, sz) \ |
| 139 | round_page((vaddr_t)(da) + (vsize_t)maxdmap) |
| 140 | |
| 141 | #define VM_DEFAULT_ADDRESS32_TOPDOWN(da, sz) \ |
| 142 | trunc_page(USRSTACK32 - MAXSSIZ32 - (sz)) |
| 143 | #define VM_DEFAULT_ADDRESS32_BOTTOMUP(da, sz) \ |
| 144 | round_page((vaddr_t)(da) + (vsize_t)MAXDSIZ32) |
| 145 | |
| 146 | /* |
| 147 | * XXXfvdl we have plenty of KVM now, remove this. |
| 148 | */ |
| 149 | #ifndef VM_MAX_KERNEL_BUF |
| 150 | #define VM_MAX_KERNEL_BUF (384 * 1024 * 1024) |
| 151 | #endif |
| 152 | |
| 153 | /* virtual sizes (bytes) for various kernel submaps */ |
| 154 | #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) |
| 155 | |
| 156 | #define VM_PHYSSEG_MAX 32 /* 1 "hole" + 31 free lists */ |
| 157 | #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST |
| 158 | |
| 159 | #define VM_NFREELIST 6 |
| 160 | #define VM_FREELIST_DEFAULT 0 |
| 161 | #define VM_FREELIST_FIRST1T 1 |
| 162 | #define VM_FREELIST_FIRST64G 2 |
| 163 | #define VM_FREELIST_FIRST4G 3 |
| 164 | #define VM_FREELIST_FIRST1G 4 |
| 165 | #define VM_FREELIST_FIRST16 5 |
| 166 | |
| 167 | #else /* !__x86_64__ */ |
| 168 | |
| 169 | #include <i386/vmparam.h> |
| 170 | |
| 171 | #endif /* __x86_64__ */ |
| 172 | |
| 173 | #endif /* _X86_64_VMPARAM_H_ */ |
| 174 | |