1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2002-2006 Rice University
5 * Copyright (c) 2007-2008 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/*
37 *	Superpage reservation management definitions
38 */
39
40#ifndef	_VM_RESERV_H_
41#define	_VM_RESERV_H_
42
43#ifdef _KERNEL
44
45#if VM_NRESERVLEVEL > 0
46
47/*
48 * The following functions are only to be used by the virtual memory system.
49 */
50vm_page_t	vm_reserv_alloc_contig(vm_object_t object, vm_pindex_t pindex,
51		    int domain, int req, vm_page_t mpred, u_long npages,
52		    vm_paddr_t low, vm_paddr_t high, u_long alignment,
53		    vm_paddr_t boundary);
54vm_page_t	vm_reserv_alloc_page(vm_object_t object, vm_pindex_t pindex,
55		    int domain, int req, vm_page_t mpred);
56void		vm_reserv_break_all(vm_object_t object);
57boolean_t	vm_reserv_free_page(vm_page_t m);
58void		vm_reserv_init(void);
59bool		vm_reserv_is_page_free(vm_page_t m);
60int		vm_reserv_level(vm_page_t m);
61int		vm_reserv_level_iffullpop(vm_page_t m);
62bool		vm_reserv_reclaim_contig(int domain, u_long npages,
63		    vm_paddr_t low, vm_paddr_t high, u_long alignment,
64		    vm_paddr_t boundary);
65bool		vm_reserv_reclaim_inactive(int domain);
66void		vm_reserv_rename(vm_page_t m, vm_object_t new_object,
67		    vm_object_t old_object, vm_pindex_t old_object_offset);
68int		vm_reserv_size(int level);
69vm_paddr_t	vm_reserv_startup(vm_offset_t *vaddr, vm_paddr_t end);
70vm_page_t	vm_reserv_to_superpage(vm_page_t m);
71
72#endif	/* VM_NRESERVLEVEL > 0 */
73#endif	/* _KERNEL */
74#endif	/* !_VM_RESERV_H_ */
75