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/*
37 *	Physical memory system definitions
38 */
39
40#ifndef	_VM_PHYS_H_
41#define	_VM_PHYS_H_
42
43#ifdef _KERNEL
44
45extern vm_paddr_t phys_avail[];
46
47/* Domains must be dense (non-sparse) and zero-based. */
48struct mem_affinity {
49	vm_paddr_t start;
50	vm_paddr_t end;
51	int domain;
52};
53#ifdef NUMA
54extern struct mem_affinity *mem_affinity;
55extern int *mem_locality;
56#endif
57
58/*
59 * The following functions are only to be used by the virtual memory system.
60 */
61void vm_phys_add_seg(vm_paddr_t start, vm_paddr_t end);
62vm_page_t vm_phys_alloc_contig(int domain, u_long npages, vm_paddr_t low,
63    vm_paddr_t high, u_long alignment, vm_paddr_t boundary);
64vm_page_t vm_phys_alloc_freelist_pages(int domain, int freelist, int pool,
65    int order);
66int vm_phys_alloc_npages(int domain, int pool, int npages, vm_page_t ma[]);
67vm_page_t vm_phys_alloc_pages(int domain, int pool, int order);
68int vm_phys_domain_match(int prefer, vm_paddr_t low, vm_paddr_t high);
69void vm_phys_enqueue_contig(vm_page_t m, u_long npages);
70int vm_phys_fictitious_reg_range(vm_paddr_t start, vm_paddr_t end,
71    vm_memattr_t memattr);
72void vm_phys_fictitious_unreg_range(vm_paddr_t start, vm_paddr_t end);
73vm_page_t vm_phys_fictitious_to_vm_page(vm_paddr_t pa);
74void vm_phys_free_contig(vm_page_t m, u_long npages);
75void vm_phys_free_pages(vm_page_t m, int order);
76void vm_phys_init(void);
77vm_page_t vm_phys_paddr_to_vm_page(vm_paddr_t pa);
78void vm_phys_register_domains(int ndomains, struct mem_affinity *affinity,
79    int *locality);
80vm_page_t vm_phys_scan_contig(int domain, u_long npages, vm_paddr_t low,
81    vm_paddr_t high, u_long alignment, vm_paddr_t boundary, int options);
82void vm_phys_set_pool(int pool, vm_page_t m, int order);
83boolean_t vm_phys_unfree_page(vm_page_t m);
84int vm_phys_mem_affinity(int f, int t);
85void vm_phys_early_add_seg(vm_paddr_t start, vm_paddr_t end);
86vm_paddr_t vm_phys_early_alloc(int domain, size_t alloc_size);
87void vm_phys_early_startup(void);
88int vm_phys_avail_largest(void);
89vm_paddr_t vm_phys_avail_size(int i);
90
91static inline int
92vm_phys_domain(vm_paddr_t pa)
93{
94#ifdef NUMA
95	int i;
96
97	if (vm_ndomains == 1)
98		return (0);
99	for (i = 0; mem_affinity[i].end != 0; i++)
100		if (mem_affinity[i].start <= pa &&
101		    mem_affinity[i].end >= pa)
102			return (mem_affinity[i].domain);
103	return (-1);
104#else
105	return (0);
106#endif
107}
108
109#endif	/* _KERNEL */
110#endif	/* !_VM_PHYS_H_ */
111