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: releng/8.0/sys/vm/pmap.h 195649 2009-07-12 23:31:20Z alc $
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 /*
83 * Each machine dependent implementation is expected to provide:
84 *
85 * vm_memattr_t pmap_page_get_memattr(vm_page_t);
86 * boolean_t pmap_page_is_mapped(vm_page_t);
87 * void pmap_page_set_memattr(vm_page_t, vm_memattr_t);
88 */
89 #include <machine/pmap.h>
90
91 #ifdef _KERNEL
92 struct thread;
93
94 /*
95 * Updates to kernel_vm_end are synchronized by the kernel_map's system mutex.
96 */
97 extern vm_offset_t kernel_vm_end;
98
99 void pmap_align_superpage(vm_object_t, vm_ooffset_t, vm_offset_t *,
100 vm_size_t);
101 void pmap_change_wiring(pmap_t, vm_offset_t, boolean_t);
102 void pmap_clear_modify(vm_page_t m);
103 void pmap_clear_reference(vm_page_t m);
104 void pmap_copy(pmap_t, pmap_t, vm_offset_t, vm_size_t, vm_offset_t);
105 void pmap_copy_page(vm_page_t, vm_page_t);
106 void pmap_enter(pmap_t, vm_offset_t, vm_prot_t, vm_page_t,
107 vm_prot_t, boolean_t);
108 void pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m,
109 vm_prot_t prot);
110 void pmap_enter_object(pmap_t pmap, vm_offset_t start,
111 vm_offset_t end, vm_page_t m_start, vm_prot_t prot);
112 vm_paddr_t pmap_extract(pmap_t pmap, vm_offset_t va);
113 vm_page_t pmap_extract_and_hold(pmap_t pmap, vm_offset_t va,
114 vm_prot_t prot);
115 void pmap_growkernel(vm_offset_t);
116 void pmap_init(void);
117 boolean_t pmap_is_modified(vm_page_t m);
118 boolean_t pmap_is_prefaultable(pmap_t pmap, vm_offset_t va);
119 boolean_t pmap_ts_referenced(vm_page_t m);
120 vm_offset_t pmap_map(vm_offset_t *, vm_paddr_t, vm_paddr_t, int);
121 void pmap_object_init_pt(pmap_t pmap, vm_offset_t addr,
122 vm_object_t object, vm_pindex_t pindex, vm_size_t size);
123 boolean_t pmap_page_exists_quick(pmap_t pmap, vm_page_t m);
124 void pmap_page_init(vm_page_t m);
125 int pmap_page_wired_mappings(vm_page_t m);
126 int pmap_pinit(pmap_t);
127 void pmap_pinit0(pmap_t);
128 void pmap_protect(pmap_t, vm_offset_t, vm_offset_t, vm_prot_t);
129 void pmap_qenter(vm_offset_t, vm_page_t *, int);
130 void pmap_qremove(vm_offset_t, int);
131 void pmap_release(pmap_t);
132 void pmap_remove(pmap_t, vm_offset_t, vm_offset_t);
133 void pmap_remove_all(vm_page_t m);
134 void pmap_remove_pages(pmap_t);
135 void pmap_remove_write(vm_page_t m);
136 void pmap_zero_page(vm_page_t);
137 void pmap_zero_page_area(vm_page_t, int off, int size);
138 void pmap_zero_page_idle(vm_page_t);
139 int pmap_mincore(pmap_t pmap, vm_offset_t addr);
140 void pmap_activate(struct thread *td);
141
142 #define pmap_resident_count(pm) ((pm)->pm_stats.resident_count)
143 #define pmap_wired_count(pm) ((pm)->pm_stats.wired_count)
144
145 #endif /* _KERNEL */
146 #endif /* _PMAP_VM_ */
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