xref: /freebsd/sys/vm/_vm_phys.h (revision a970610a3af63b3f4df5b69d91c6b4093a00ed8f)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
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 
34 #ifndef	__VM_PHYS_H_
35 #define	__VM_PHYS_H_
36 
37 #include <machine/vmparam.h>
38 
39 #ifndef VM_NFREEORDER_MAX
40 #define	VM_NFREEORDER_MAX	VM_NFREEORDER
41 #endif
42 
43 struct vm_page;
44 #ifndef VM_PAGE_HAVE_PGLIST
45 TAILQ_HEAD(pglist, vm_page);
46 #define VM_PAGE_HAVE_PGLIST
47 #endif
48 
49 struct vm_freelist {
50 	struct pglist pl;
51 	int lcnt;
52 };
53 
54 struct vm_phys_seg {
55 	vm_paddr_t	start;
56 	vm_paddr_t	end;
57 	vm_page_t	first_page;
58 #if VM_NRESERVLEVEL > 0
59 	vm_reserv_t	first_reserv;
60 #endif
61 #ifdef __aarch64__
62 	void		*md_first;
63 #endif
64 	int		domain;
65 	struct vm_freelist (*free_queues)[VM_NFREEPOOL][VM_NFREEORDER_MAX];
66 };
67 
68 extern struct vm_phys_seg vm_phys_segs[];
69 extern int vm_phys_nsegs;
70 
71 #endif /* !__VM_PHYS_H_ */
72