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39923942 SS |
1 | /*- |
2 | * Copyright (c) 1990 The Regents of the University of California. | |
39923942 | 3 | * Copyright (c) 1994 John S. Dyson |
39923942 | 4 | * Copyright (c) 2003 Peter Wemm |
c8fe38ae | 5 | * Copyright (c) 2008 The DragonFly Project. |
39923942 SS |
6 | * All rights reserved. |
7 | * | |
8 | * This code is derived from software contributed to Berkeley by | |
9 | * William Jolitz. | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. All advertising materials mentioning features or use of this software | |
20 | * must display the following acknowledgement: | |
21 | * This product includes software developed by the University of | |
22 | * California, Berkeley and its contributors. | |
23 | * 4. Neither the name of the University nor the names of its contributors | |
24 | * may be used to endorse or promote products derived from this software | |
25 | * without specific prior written permission. | |
26 | * | |
27 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
28 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
29 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
30 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
31 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
32 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
33 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
35 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
36 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
37 | * SUCH DAMAGE. | |
38 | * | |
39 | * from: @(#)vmparam.h 5.9 (Berkeley) 5/12/91 | |
40 | * $FreeBSD: src/sys/amd64/include/vmparam.h,v 1.44 2003/12/07 04:51:04 alc Exp $ | |
c8fe38ae | 41 | * $DragonFly: src/sys/platform/pc64/include/vmparam.h,v 1.2 2008/08/29 17:07:17 dillon Exp $ |
39923942 SS |
42 | */ |
43 | ||
44 | ||
45 | #ifndef _MACHINE_VMPARAM_H_ | |
46 | #define _MACHINE_VMPARAM_H_ | |
47 | ||
48 | /* | |
b2b3ffcd | 49 | * Machine dependent constants for x86_64. |
39923942 SS |
50 | */ |
51 | ||
52 | /* | |
53 | * Virtual memory related constants, all in bytes | |
54 | */ | |
55 | #define MAXTSIZ (128UL*1024*1024) /* max text size */ | |
56 | #ifndef DFLDSIZ | |
57 | #define DFLDSIZ (128UL*1024*1024) /* initial data size limit */ | |
58 | #endif | |
59 | #ifndef MAXDSIZ | |
a2a636cc | 60 | #define MAXDSIZ (32768UL*1024*1024) /* max data size */ |
39923942 SS |
61 | #endif |
62 | #ifndef DFLSSIZ | |
63 | #define DFLSSIZ (8UL*1024*1024) /* initial stack size limit */ | |
64 | #endif | |
65 | #ifndef MAXSSIZ | |
a2a636cc | 66 | #define MAXSSIZ (512UL*1024*1024) /* max stack size */ |
39923942 SS |
67 | #endif |
68 | #ifndef SGROWSIZ | |
69 | #define SGROWSIZ (128UL*1024) /* amount to grow stack */ | |
70 | #endif | |
71 | ||
72 | /* | |
73 | * The time for a process to be blocked before being very swappable. | |
74 | * This is a number of seconds which the system takes as being a non-trivial | |
75 | * amount of real time. You probably shouldn't change this; | |
76 | * it is used in subtle ways (fractions and multiples of it are, that is, like | |
77 | * half of a ``long time'', almost a long time, etc.) | |
78 | * It is related to human patience and other factors which don't really | |
79 | * change over time. | |
80 | */ | |
81 | #define MAXSLP 20 | |
82 | ||
83 | /* | |
84 | * We provide a machine specific single page allocator through the use | |
85 | * of the direct mapped segment. This uses 2MB pages for reduced | |
86 | * TLB pressure. | |
87 | */ | |
88 | #define UMA_MD_SMALL_ALLOC | |
89 | ||
c8fe38ae MD |
90 | /* |
91 | * The number of PHYSSEG entries must be one greater than the number | |
92 | * of phys_avail entries because the phys_avail entry that spans the | |
93 | * largest physical address that is accessible by ISA DMA is split | |
94 | * into two PHYSSEG entries. | |
95 | */ | |
96 | #define VM_PHYSSEG_MAX 31 | |
97 | ||
39923942 SS |
98 | /* |
99 | * Virtual addresses of things. Derived from the page directory and | |
100 | * page table indexes from pmap.h for precision. | |
101 | * Because of the page that is both a PD and PT, it looks a little | |
102 | * messy at times, but hey, we'll do anything to save a page :-) | |
791c6551 MD |
103 | * |
104 | * The kernel address space can be up to (I think) 511 page directory | |
105 | * pages. Each one represents 1G. NKPDPE defines the size of the kernel | |
ad54aa11 | 106 | * address space, curently set to 128G. |
da23a592 MD |
107 | * |
108 | * The ending address is non-inclusive of the per-cpu data array | |
109 | * which starts at MPPTDI (-16MB mark). MPPTDI is the page directory | |
110 | * index in the last PD of the kernel address space and is typically | |
111 | * set to (NPDEPG - 8) = (512 - 8). | |
39923942 | 112 | */ |
ad54aa11 | 113 | #define NKPDPE 128 |
da23a592 MD |
114 | #define VM_MIN_KERNEL_ADDRESS KVADDR(KPML4I, NPDPEPG - NKPDPE, 0, 0) |
115 | #define VM_MAX_KERNEL_ADDRESS KVADDR(KPML4I, NPDPEPG - 1, MPPTDI, NPTEPG - 1) | |
39923942 SS |
116 | |
117 | #define DMAP_MIN_ADDRESS KVADDR(DMPML4I, 0, 0, 0) | |
33fb3ba1 | 118 | #define DMAP_MAX_ADDRESS KVADDR(DMPML4I+NDMPML4E, 0, 0, 0) |
39923942 | 119 | |
67553e72 JG |
120 | #define KERNBASE KVADDR(KPML4I, KPDPI, 0, 0) |
121 | #define PTOV_OFFSET KERNBASE | |
c8fe38ae | 122 | |
67553e72 JG |
123 | #define UPT_MAX_ADDRESS KVADDR(PML4PML4I, PML4PML4I, PML4PML4I, PML4PML4I) |
124 | #define UPT_MIN_ADDRESS KVADDR(PML4PML4I, 0, 0, 0) | |
39923942 SS |
125 | |
126 | #define VM_MIN_USER_ADDRESS ((vm_offset_t)0) | |
701c977e | 127 | #define VM_MAX_USER_ADDRESS UVADDR(NUPDP_USER, 0, 0, 0) |
67553e72 JG |
128 | |
129 | #define USRSTACK VM_MAX_USER_ADDRESS | |
39923942 | 130 | |
bfc09ba0 MD |
131 | #define PHYS_TO_DMAP(x) ((vm_offset_t)(x) | DMAP_MIN_ADDRESS) |
132 | #define DMAP_TO_PHYS(x) ((vm_paddr_t)(x) & ~DMAP_MIN_ADDRESS) | |
39923942 | 133 | |
39923942 SS |
134 | /* initial pagein size of beginning of executable file */ |
135 | #ifndef VM_INITIAL_PAGEIN | |
136 | #define VM_INITIAL_PAGEIN 16 | |
137 | #endif | |
138 | ||
139 | #endif /* _MACHINE_VMPARAM_H_ */ |