2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2002-2006 Rice University
5 * Copyright (c) 2007 Alan L. Cox <alc@cs.rice.edu>
8 * This software was developed for the FreeBSD Project by Alan L. Cox,
9 * Olivier Crameri, Peter Druschel, Sitaram Iyer, and Juan Navarro.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
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.
37 * Physical memory system definitions
45 /* Domains must be dense (non-sparse) and zero-based. */
62 struct vm_freelist (*free_queues)[VM_NFREEPOOL][VM_NFREEORDER];
65 extern struct mem_affinity *mem_affinity;
66 extern int *mem_locality;
67 extern int vm_ndomains;
68 extern struct vm_phys_seg vm_phys_segs[];
69 extern int vm_phys_nsegs;
72 * The following functions are only to be used by the virtual memory system.
74 void vm_phys_add_seg(vm_paddr_t start, vm_paddr_t end);
75 vm_page_t vm_phys_alloc_contig(int domain, u_long npages, vm_paddr_t low,
76 vm_paddr_t high, u_long alignment, vm_paddr_t boundary);
77 vm_page_t vm_phys_alloc_freelist_pages(int domain, int freelist, int pool,
79 vm_page_t vm_phys_alloc_pages(int domain, int pool, int order);
80 boolean_t vm_phys_domain_intersects(long mask, vm_paddr_t low, vm_paddr_t high);
81 int vm_phys_fictitious_reg_range(vm_paddr_t start, vm_paddr_t end,
82 vm_memattr_t memattr);
83 void vm_phys_fictitious_unreg_range(vm_paddr_t start, vm_paddr_t end);
84 vm_page_t vm_phys_fictitious_to_vm_page(vm_paddr_t pa);
85 void vm_phys_free_contig(vm_page_t m, u_long npages);
86 void vm_phys_free_pages(vm_page_t m, int order);
87 void vm_phys_init(void);
88 vm_page_t vm_phys_paddr_to_vm_page(vm_paddr_t pa);
89 vm_page_t vm_phys_scan_contig(u_long npages, vm_paddr_t low, vm_paddr_t high,
90 u_long alignment, vm_paddr_t boundary, int options);
91 void vm_phys_set_pool(int pool, vm_page_t m, int order);
92 boolean_t vm_phys_unfree_page(vm_page_t m);
93 int vm_phys_mem_affinity(int f, int t);
99 * Return the index of the domain the page belongs to.
102 vm_phys_domidx(vm_page_t m)
107 /* XXXKIB try to assert that the page is managed */
109 KASSERT(segind < vm_phys_nsegs, ("segind %d m %p", segind, m));
110 domn = vm_phys_segs[segind].domain;
111 KASSERT(domn < vm_ndomains, ("domain %d m %p", domn, m));
121 * Return the memory domain the page belongs to.
123 static inline struct vm_domain *
124 vm_phys_domain(vm_page_t m)
127 return (&vm_dom[vm_phys_domidx(m)]);
131 vm_phys_freecnt_adj(vm_page_t m, int adj)
134 mtx_assert(&vm_page_queue_free_mtx, MA_OWNED);
135 vm_phys_domain(m)->vmd_free_count += adj;
136 return (vm_cnt.v_free_count += adj);
140 #endif /* !_VM_PHYS_H_ */