xref: /freebsd/sys/vm/_vm_phys.h (revision 6be3386466ab79a84b48429ae66244f21526d3df)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2002-2006 Rice University
5  * Copyright (c) 2007 Alan L. Cox <alc@cs.rice.edu>
6  * All rights reserved.
7  *
8  * This software was developed for the FreeBSD Project by Alan L. Cox,
9  * Olivier Crameri, Peter Druschel, Sitaram Iyer, and Juan Navarro.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
24  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
27  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
28  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
30  * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31  * POSSIBILITY OF SUCH DAMAGE.
32  *
33  * $FreeBSD$
34  */
35 
36 #ifndef	__VM_PHYS_H_
37 #define	__VM_PHYS_H_
38 
39 #include <machine/vmparam.h>
40 
41 #ifndef VM_NFREEORDER_MAX
42 #define	VM_NFREEORDER_MAX	VM_NFREEORDER
43 #endif
44 
45 struct vm_page;
46 #ifndef VM_PAGE_HAVE_PGLIST
47 TAILQ_HEAD(pglist, vm_page);
48 #define VM_PAGE_HAVE_PGLIST
49 #endif
50 
51 struct vm_freelist {
52 	struct pglist pl;
53 	int lcnt;
54 };
55 
56 struct vm_phys_seg {
57 	vm_paddr_t	start;
58 	vm_paddr_t	end;
59 	vm_page_t	first_page;
60 #if VM_NRESERVLEVEL > 0
61 	vm_reserv_t	first_reserv;
62 #endif
63 #ifdef __aarch64__
64 	void		*md_first;
65 #endif
66 	int		domain;
67 	struct vm_freelist (*free_queues)[VM_NFREEPOOL][VM_NFREEORDER_MAX];
68 };
69 
70 extern struct vm_phys_seg vm_phys_segs[];
71 extern int vm_phys_nsegs;
72 
73 #endif /* !__VM_PHYS_H_ */
74