1/*-
 2 * SPDX-License-Identifier: BSD-2-Clause
 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
34/*
35 *	Superpage reservation management definitions
36 */
37
38#ifndef	_VM_RESERV_H_
39#define	_VM_RESERV_H_
40
41#ifdef _KERNEL
42
43#if VM_NRESERVLEVEL > 0
44
45/*
46 * The following functions are only to be used by the virtual memory system.
47 */
48vm_page_t	vm_reserv_alloc_contig(vm_object_t object, vm_pindex_t pindex,
49		    int domain, int req, vm_page_t mpred, u_long npages,
50		    vm_paddr_t low, vm_paddr_t high, u_long alignment,
51		    vm_paddr_t boundary);
52vm_page_t	vm_reserv_alloc_page(vm_object_t object, vm_pindex_t pindex,
53		    int domain, int req, vm_page_t mpred);
54void		vm_reserv_break_all(vm_object_t object);
55boolean_t	vm_reserv_free_page(vm_page_t m);
56void		vm_reserv_init(void);
57bool		vm_reserv_is_page_free(vm_page_t m);
58int		vm_reserv_level(vm_page_t m);
59int		vm_reserv_level_iffullpop(vm_page_t m);
60vm_page_t	vm_reserv_reclaim_contig(int domain, u_long npages,
61		    vm_paddr_t low, vm_paddr_t high, u_long alignment,
62		    vm_paddr_t boundary);
63bool		vm_reserv_reclaim_inactive(int domain);
64void		vm_reserv_rename(vm_page_t m, vm_object_t new_object,
65		    vm_object_t old_object, vm_pindex_t old_object_offset);
66int		vm_reserv_size(int level);
67vm_paddr_t	vm_reserv_startup(vm_offset_t *vaddr, vm_paddr_t end);
68vm_page_t	vm_reserv_to_superpage(vm_page_t m);
69
70#endif	/* VM_NRESERVLEVEL > 0 */
71#endif	/* _KERNEL */
72#endif	/* !_VM_RESERV_H_ */