Annotation of sys/arch/sparc64/include/vmparam.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: vmparam.h,v 1.16 2007/04/21 13:43:38 art Exp $ */
2: /* $NetBSD: vmparam.h,v 1.18 2001/05/01 02:19:19 thorpej Exp $ */
3:
4: /*
5: * Copyright (c) 1992, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This software was developed by the Computer Systems Engineering group
9: * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
10: * contributed to Berkeley.
11: *
12: * All advertising materials mentioning features or use of this software
13: * must display the following acknowledgement:
14: * This product includes software developed by the University of
15: * California, Lawrence Berkeley Laboratory.
16: *
17: * Redistribution and use in source and binary forms, with or without
18: * modification, are permitted provided that the following conditions
19: * are met:
20: * 1. Redistributions of source code must retain the above copyright
21: * notice, this list of conditions and the following disclaimer.
22: * 2. Redistributions in binary form must reproduce the above copyright
23: * notice, this list of conditions and the following disclaimer in the
24: * documentation and/or other materials provided with the distribution.
25: * 3. Neither the name of the University nor the names of its contributors
26: * may be used to endorse or promote products derived from this software
27: * without specific prior written permission.
28: *
29: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39: * SUCH DAMAGE.
40: *
41: * @(#)vmparam.h 8.1 (Berkeley) 6/11/93
42: */
43:
44: /*
45: * Machine dependent constants for Sun-4c SPARC
46: */
47:
48: #ifndef VMPARAM_H
49: #define VMPARAM_H
50:
51: /*
52: * USRTEXT is the start of the user text/data space, while USRSTACK
53: * is the top (end) of the user stack.
54: */
55: #define USRTEXT 0x2000 /* Start of user text */
56: #define USRSTACK 0xffffffffffffe000L
57:
58: /*
59: * Virtual memory related constants, all in bytes
60: */
61: /* #ifdef __arch64__ */
62: #if 0
63: /*
64: * 64-bit limits:
65: *
66: * Since the compiler generates `call' instructions we can't
67: * have more than 4GB in a single text segment.
68: *
69: * And since we only have a 40-bit adderss space, allow half
70: * of that for data and the other half for stack.
71: */
72: #ifndef MAXTSIZ
73: #define MAXTSIZ (4L*1024*1024*1024) /* max text size */
74: #endif
75: #ifndef DFLDSIZ
76: #define DFLDSIZ (128L*1024*1024) /* initial data size limit */
77: #endif
78: #ifndef MAXDSIZ
79: #define MAXDSIZ (512L*1024*1024*1024) /* max data size */
80: #endif
81: #ifndef DFLSSIZ
82: #define DFLSSIZ (1024*1024) /* initial stack size limit */
83: #endif
84: #ifndef MAXSSIZ
85: #define MAXSSIZ MAXDSIZ /* max stack size */
86: #endif
87: #else
88: /*
89: * 32-bit limits:
90: *
91: * We only have 4GB to play with. Limit stack, data, and text
92: * each to half of that.
93: *
94: * This is silly. Apparently if we go above these numbers
95: * integer overflows in other parts of the kernel cause hangs.
96: */
97: #ifndef MAXTSIZ
98: #define MAXTSIZ (1*1024*1024*1024) /* max text size */
99: #endif
100: #ifndef DFLDSIZ
101: #define DFLDSIZ (128*1024*1024) /* initial data size limit */
102: #endif
103: #ifndef MAXDSIZ
104: #define MAXDSIZ (1*1024*1024*1024) /* max data size */
105: #endif
106: #ifndef DFLSSIZ
107: #define DFLSSIZ (1024*1024) /* initial stack size limit */
108: #endif
109: #ifndef MAXSSIZ
110: #define MAXSSIZ (8*1024*1024) /* max stack size */
111: #endif
112: #endif
113:
114: #define STACKGAP_RANDOM 256*1024
115:
116: /*
117: * Size of shared memory map
118: */
119: #ifndef SHMMAXPGS
120: #define SHMMAXPGS 4096 /* 32mb */
121: #endif
122:
123: /*
124: * Mach derived constants
125: */
126:
127: /*
128: * User/kernel map constants.
129: */
130: #define VM_MIN_ADDRESS ((vaddr_t)0)
131: #define VM_MAX_ADDRESS ((vaddr_t)-1)
132: #define VM_MAXUSER_ADDRESS ((vaddr_t)-1)
133:
134: #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE)
135: #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0x000007ffffffffffL)
136:
137: #define VM_PHYSSEG_MAX 32 /* up to 32 segments */
138: #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
139: #define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */
140:
141: #define VM_NFREELIST 1
142: #define VM_FREELIST_DEFAULT 0
143:
144: #define __HAVE_VM_PAGE_MD
145: /*
146: * For each struct vm_page, there is a list of all currently valid virtual
147: * mappings of that page. An entry is a pv_entry_t, the list is pv_table.
148: *
149: * XXX - this doesn't belong here, but for now we have to keep it here
150: * because of include ordering issues.
151: */
152: typedef struct pv_entry {
153: struct pv_entry *pv_next; /* next pv_entry */
154: struct pmap *pv_pmap; /* pmap where mapping lies */
155: vaddr_t pv_va; /* virtual address for mapping */
156: } *pv_entry_t;
157: /* PV flags encoded in the low bits of the VA of the first pv_entry */
158:
159: struct vm_page_md {
160: struct pv_entry pvent;
161: };
162:
163: #define VM_MDPAGE_INIT(pg) do { \
164: (pg)->mdpage.pvent.pv_next = NULL; \
165: (pg)->mdpage.pvent.pv_pmap = NULL; \
166: (pg)->mdpage.pvent.pv_va = 0; \
167: } while (0)
168:
169: #if defined (_KERNEL) && !defined(_LOCORE)
170: struct vm_map;
171: vaddr_t dvma_mapin(struct vm_map *, vaddr_t, int, int);
172: void dvma_mapout(vaddr_t, vaddr_t, int);
173: #endif
174: #endif
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