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 | |