2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * The Mach Operating System project at Carnegie-Mellon University.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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 * 3. 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.
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
32 * from: @(#)pmap.h 8.1 (Berkeley) 6/11/93
35 * Copyright (c) 1987, 1990 Carnegie-Mellon University.
36 * All rights reserved.
38 * Author: Avadis Tevanian, Jr.
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.
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.
50 * Carnegie Mellon requests users of this software to return to
52 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
53 * School of Computer Science
54 * Carnegie Mellon University
55 * Pittsburgh PA 15213-3890
57 * any improvements or extensions that they make and grant Carnegie the
58 * rights to redistribute these changes.
60 * $FreeBSD: src/sys/vm/pmap.h,v 1.33.2.4 2002/03/06 22:44:24 silby Exp $
64 * Machine address mapping definitions -- machine-independent
65 * section. [For machine-dependent section, see "machine/pmap.h".]
72 #include <sys/types.h>
75 #ifndef _SYS_SPINLOCK_H_
76 #include <sys/spinlock.h>
79 #ifndef _MACHINE_PMAP_H_
80 #include <machine/pmap.h>
97 struct pmap_pgscan_info
{
100 vm_offset_t end_addr
;
103 vm_pindex_t busycount
;
104 vm_pindex_t cleancount
;
105 vm_pindex_t actioncount
;
106 int (*callback
)(struct pmap_pgscan_info
*,
112 * Most of these variables represent parameters set up by low level MD kernel
113 * boot code to be used by higher level MI initialization code to identify
114 * the portions of kernel and physical memory which are free for allocation.
116 * KvaStart/KvaEnd/ - Reserved Kernel Virtual Memory address space.
117 * KvaSize This range represents the entire KVA space but
118 * might omit certain special mapping areas. It is
119 * used to determine what kernel memory userland has
122 * virtual_{start,end} - KVA space available for allocation, not including
123 * KVA space reserved during MD startup. Used by
124 * the KMEM subsystem, used to initialize kernel_map.
126 * phys_avail[] - Array of {start,end} physical addresses, not
127 * including physical memory allocated by MD startup
128 * code. Used to initialize the VM subsystem.
130 extern vm_offset_t KvaStart
;
131 extern vm_offset_t KvaEnd
;
132 extern vm_offset_t KvaSize
;
133 extern vm_offset_t virtual_start
;
134 extern vm_offset_t virtual_end
;
135 extern vm_offset_t virtual2_start
;
136 extern vm_offset_t virtual2_end
;
137 extern vm_paddr_t phys_avail
[];
140 * High-level pmap scan
142 void pmap_pgscan(struct pmap_pgscan_info
*info
);
145 * Return true if the passed address is in the kernel address space.
146 * This is mainly a check that the address is NOT in the user address space.
148 * For a vkernels all addresses are in the kernel address space.
151 kva_p(const void *addr
)
153 #ifdef _KERNEL_VIRTUAL
154 return (addr
!= NULL
);
156 return ((unsigned long)KvaStart
<= (unsigned long)addr
) &&
157 ((unsigned long)addr
< (unsigned long)KvaEnd
);
161 void pmap_change_wiring (pmap_t
, vm_offset_t
, boolean_t
,
163 void pmap_clear_modify (struct vm_page
*m
);
164 void pmap_clear_reference (struct vm_page
*m
);
165 void pmap_collect (void);
166 void pmap_copy (pmap_t
, pmap_t
, vm_offset_t
, vm_size_t
,
168 void pmap_copy_page (vm_paddr_t
, vm_paddr_t
);
169 void pmap_copy_page_frag (vm_paddr_t
, vm_paddr_t
, size_t bytes
);
170 void pmap_enter (pmap_t
, vm_offset_t
, struct vm_page
*,
171 vm_prot_t
, boolean_t
, struct vm_map_entry
*);
172 void pmap_enter_quick (pmap_t
, vm_offset_t
, struct vm_page
*);
173 vm_page_t
pmap_fault_page_quick(pmap_t
, vm_offset_t
, vm_prot_t
);
174 vm_paddr_t
pmap_extract (pmap_t pmap
, vm_offset_t va
);
175 void pmap_growkernel (vm_offset_t
, vm_offset_t
);
176 void pmap_init (void);
177 boolean_t
pmap_is_modified (struct vm_page
*m
);
178 int pmap_ts_referenced (struct vm_page
*m
);
179 vm_offset_t
pmap_map (vm_offset_t
*, vm_paddr_t
, vm_paddr_t
, int);
180 void pmap_object_init_pt (pmap_t pmap
, vm_offset_t addr
,
181 vm_prot_t prot
, vm_object_t object
, vm_pindex_t pindex
,
182 vm_offset_t size
, int pagelimit
);
183 boolean_t
pmap_page_exists_quick (pmap_t pmap
, struct vm_page
*m
);
184 void pmap_page_protect (struct vm_page
*m
, vm_prot_t prot
);
185 void pmap_page_init (struct vm_page
*m
);
186 vm_paddr_t
pmap_phys_address (vm_pindex_t
);
187 void pmap_pinit (pmap_t
);
188 void pmap_puninit (pmap_t
);
189 void pmap_pinit0 (pmap_t
);
190 void pmap_pinit2 (pmap_t
);
191 void pmap_protect (pmap_t
, vm_offset_t
, vm_offset_t
, vm_prot_t
);
192 void pmap_remove_specific (pmap_t
, vm_page_t
);
193 void pmap_qenter (vm_offset_t
, struct vm_page
**, int);
194 void pmap_qremove (vm_offset_t
, int);
195 void pmap_qremove_quick (vm_offset_t
, int);
196 void pmap_qremove_noinval (vm_offset_t
, int);
197 void pmap_kenter (vm_offset_t
, vm_paddr_t
);
198 int pmap_kenter_quick (vm_offset_t
, vm_paddr_t
);
199 int pmap_kenter_noinval (vm_offset_t
, vm_paddr_t
);
200 void pmap_kmodify_rw(vm_offset_t va
);
201 void pmap_kmodify_nc(vm_offset_t va
);
202 void pmap_kremove (vm_offset_t
);
203 void pmap_kremove_quick (vm_offset_t
);
204 void pmap_kremove_noinval (vm_offset_t
);
205 void pmap_reference (pmap_t
);
206 void pmap_remove (pmap_t
, vm_offset_t
, vm_offset_t
);
207 void pmap_remove_pages (pmap_t
, vm_offset_t
, vm_offset_t
);
208 void pmap_zero_page (vm_paddr_t
);
209 void pmap_zero_page_area (vm_paddr_t
, int off
, int size
);
210 int pmap_prefault_ok (pmap_t
, vm_offset_t
);
211 void pmap_change_attr(vm_offset_t va
, vm_size_t count
, int mode
);
212 int pmap_mincore (pmap_t pmap
, vm_offset_t addr
);
213 void pmap_init_proc (struct proc
*);
214 void pmap_init_thread (struct thread
*td
);
215 void pmap_replacevm (struct proc
*, struct vmspace
*, int);
216 void pmap_setlwpvm (struct lwp
*, struct vmspace
*);
217 vm_paddr_t
pmap_kextract(vm_offset_t
);
218 void pmap_invalidate_range(pmap_t
, vm_offset_t
, vm_offset_t
);
220 vm_offset_t
pmap_addr_hint (vm_object_t obj
, vm_offset_t addr
, vm_size_t size
);
221 void *pmap_kenter_temporary (vm_paddr_t pa
, long i
);
222 void pmap_init2 (void);
223 struct vm_page
*pmap_kvtom(vm_offset_t va
);
224 void pmap_object_init(vm_object_t object
);
225 void pmap_object_free(vm_object_t object
);
230 #endif /* _VM_PMAP_H_ */