xref: /freebsd/sys/vm/pmap.h (revision 271c3a9060f2ee55607ebe146523f888e1db2654)
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_align_superpage(vm_object_t, vm_ooffset_t, vm_offset_t *,
94 		    vm_size_t);
95 void		 pmap_change_wiring(pmap_t, vm_offset_t, boolean_t);
96 void		 pmap_clear_modify(vm_page_t m);
97 void		 pmap_clear_reference(vm_page_t m);
98 void		 pmap_copy(pmap_t, pmap_t, vm_offset_t, vm_size_t, vm_offset_t);
99 void		 pmap_copy_page(vm_page_t, vm_page_t);
100 void		 pmap_enter(pmap_t, vm_offset_t, vm_prot_t, vm_page_t,
101 		    vm_prot_t, boolean_t);
102 void		 pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m,
103 		    vm_prot_t prot);
104 void		 pmap_enter_object(pmap_t pmap, vm_offset_t start,
105 		    vm_offset_t end, vm_page_t m_start, vm_prot_t prot);
106 vm_paddr_t	 pmap_extract(pmap_t pmap, vm_offset_t va);
107 vm_page_t	 pmap_extract_and_hold(pmap_t pmap, vm_offset_t va,
108 		    vm_prot_t prot);
109 void		 pmap_growkernel(vm_offset_t);
110 void		 pmap_init(void);
111 boolean_t	 pmap_is_modified(vm_page_t m);
112 boolean_t	 pmap_is_prefaultable(pmap_t pmap, vm_offset_t va);
113 boolean_t	 pmap_ts_referenced(vm_page_t m);
114 vm_offset_t	 pmap_map(vm_offset_t *, vm_paddr_t, vm_paddr_t, int);
115 void		 pmap_object_init_pt(pmap_t pmap, vm_offset_t addr,
116 		    vm_object_t object, vm_pindex_t pindex, vm_size_t size);
117 boolean_t	 pmap_page_exists_quick(pmap_t pmap, vm_page_t m);
118 void		 pmap_page_init(vm_page_t m);
119 int		 pmap_page_wired_mappings(vm_page_t m);
120 int		 pmap_pinit(pmap_t);
121 void		 pmap_pinit0(pmap_t);
122 void		 pmap_protect(pmap_t, vm_offset_t, vm_offset_t, vm_prot_t);
123 void		 pmap_qenter(vm_offset_t, vm_page_t *, int);
124 void		 pmap_qremove(vm_offset_t, int);
125 void		 pmap_release(pmap_t);
126 void		 pmap_remove(pmap_t, vm_offset_t, vm_offset_t);
127 void		 pmap_remove_all(vm_page_t m);
128 void		 pmap_remove_pages(pmap_t);
129 void		 pmap_remove_write(vm_page_t m);
130 void		 pmap_zero_page(vm_page_t);
131 void		 pmap_zero_page_area(vm_page_t, int off, int size);
132 void		 pmap_zero_page_idle(vm_page_t);
133 int		 pmap_mincore(pmap_t pmap, vm_offset_t addr);
134 void		 pmap_activate(struct thread *td);
135 
136 #define	pmap_resident_count(pm)	((pm)->pm_stats.resident_count)
137 #define	pmap_wired_count(pm)	((pm)->pm_stats.wired_count)
138 
139 #endif /* _KERNEL */
140 #endif /* _PMAP_VM_ */
141