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