FreeBSD/Linux Kernel Cross Reference
sys/vm/pmap.h
1 /*-
2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * The Mach Operating System project at Carnegie-Mellon University.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * from: @(#)pmap.h 8.1 (Berkeley) 6/11/93
33 *
34 *
35 * Copyright (c) 1987, 1990 Carnegie-Mellon University.
36 * All rights reserved.
37 *
38 * Author: Avadis Tevanian, Jr.
39 *
40 * Permission to use, copy, modify and distribute this software and
41 * its documentation is hereby granted, provided that both the copyright
42 * notice and this permission notice appear in all copies of the
43 * software, derivative works or modified versions, and any portions
44 * thereof, and that both notices appear in supporting documentation.
45 *
46 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
47 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
48 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
49 *
50 * Carnegie Mellon requests users of this software to return to
51 *
52 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
53 * School of Computer Science
54 * Carnegie Mellon University
55 * Pittsburgh PA 15213-3890
56 *
57 * any improvements or extensions that they make and grant Carnegie the
58 * rights to redistribute these changes.
59 *
60 * $FreeBSD$
61 */
62
63 /*
64 * Machine address mapping definitions -- machine-independent
65 * section. [For machine-dependent section, see "machine/pmap.h".]
66 */
67
68 #ifndef _PMAP_VM_
69 #define _PMAP_VM_
70 /*
71 * Each machine dependent implementation is expected to
72 * keep certain statistics. They may do this anyway they
73 * so choose, but are expected to return the statistics
74 * in the following structure.
75 */
76 struct pmap_statistics {
77 long resident_count; /* # of pages mapped (total) */
78 long wired_count; /* # of pages wired */
79 };
80 typedef struct pmap_statistics *pmap_statistics_t;
81
82 #include <machine/pmap.h>
83
84 #ifdef _KERNEL
85 struct proc;
86 struct thread;
87
88 /*
89 * Updates to kernel_vm_end are synchronized by the kernel_map's system mutex.
90 */
91 extern vm_offset_t kernel_vm_end;
92
93 void pmap_change_wiring(pmap_t, vm_offset_t, boolean_t);
94 void pmap_clear_modify(vm_page_t m);
95 void pmap_clear_reference(vm_page_t m);
96 void pmap_copy(pmap_t, pmap_t, vm_offset_t, vm_size_t, vm_offset_t);
97 void pmap_copy_page(vm_page_t, vm_page_t);
98 void pmap_enter(pmap_t, vm_offset_t, vm_page_t, vm_prot_t,
99 boolean_t);
100 void pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m,
101 vm_prot_t prot);
102 void pmap_enter_object(pmap_t pmap, vm_offset_t start,
103 vm_offset_t end, vm_page_t m_start, vm_prot_t prot);
104 vm_paddr_t pmap_extract(pmap_t pmap, vm_offset_t va);
105 vm_page_t pmap_extract_and_hold(pmap_t pmap, vm_offset_t va,
106 vm_prot_t prot);
107 void pmap_growkernel(vm_offset_t);
108 void pmap_init(void);
109 boolean_t pmap_is_modified(vm_page_t m);
110 boolean_t pmap_is_prefaultable(pmap_t pmap, vm_offset_t va);
111 boolean_t pmap_ts_referenced(vm_page_t m);
112 vm_offset_t pmap_map(vm_offset_t *, vm_paddr_t, vm_paddr_t, int);
113 void pmap_object_init_pt(pmap_t pmap, vm_offset_t addr,
114 vm_object_t object, vm_pindex_t pindex, vm_size_t size);
115 boolean_t pmap_page_exists_quick(pmap_t pmap, vm_page_t m);
116 void pmap_page_init(vm_page_t m);
117 int pmap_pinit(pmap_t);
118 void pmap_pinit0(pmap_t);
119 void pmap_protect(pmap_t, vm_offset_t, vm_offset_t, vm_prot_t);
120 void pmap_qenter(vm_offset_t, vm_page_t *, int);
121 void pmap_qremove(vm_offset_t, int);
122 void pmap_release(pmap_t);
123 void pmap_remove(pmap_t, vm_offset_t, vm_offset_t);
124 void pmap_remove_all(vm_page_t m);
125 void pmap_remove_pages(pmap_t);
126 void pmap_remove_write(vm_page_t m);
127 void pmap_zero_page(vm_page_t);
128 void pmap_zero_page_area(vm_page_t, int off, int size);
129 void pmap_zero_page_idle(vm_page_t);
130 int pmap_mincore(pmap_t pmap, vm_offset_t addr);
131 void pmap_activate(struct thread *td);
132 vm_offset_t pmap_addr_hint(vm_object_t obj, vm_offset_t addr, vm_size_t size);
133
134 #define pmap_resident_count(pm) ((pm)->pm_stats.resident_count)
135 #define pmap_wired_count(pm) ((pm)->pm_stats.wired_count)
136
137 #endif /* _KERNEL */
138 #endif /* _PMAP_VM_ */
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