1 /*- 2 * Copyright (c) 2002-2006 Rice University 3 * Copyright (c) 2007 Alan L. Cox <alc@cs.rice.edu> 4 * All rights reserved. 5 * 6 * This software was developed for the FreeBSD Project by Alan L. Cox, 7 * Olivier Crameri, Peter Druschel, Sitaram Iyer, and Juan Navarro. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 25 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY 28 * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $FreeBSD$ 32 */ 33 34 /* 35 * Physical memory system definitions 36 */ 37 38 #ifndef _VM_PHYS_H_ 39 #define _VM_PHYS_H_ 40 41 #ifdef _KERNEL 42 43 /* Domains must be dense (non-sparse) and zero-based. */ 44 struct mem_affinity { 45 vm_paddr_t start; 46 vm_paddr_t end; 47 int domain; 48 }; 49 50 struct vm_freelist { 51 struct pglist pl; 52 int lcnt; 53 }; 54 55 struct vm_phys_seg { 56 vm_paddr_t start; 57 vm_paddr_t end; 58 vm_page_t first_page; 59 int domain; 60 struct vm_freelist (*free_queues)[VM_NFREEPOOL][VM_NFREEORDER]; 61 }; 62 63 extern struct mem_affinity *mem_affinity; 64 extern int *mem_locality; 65 extern int vm_ndomains; 66 extern struct vm_phys_seg vm_phys_segs[]; 67 extern int vm_phys_nsegs; 68 69 /* 70 * The following functions are only to be used by the virtual memory system. 71 */ 72 void vm_phys_add_page(vm_paddr_t pa); 73 void vm_phys_add_seg(vm_paddr_t start, vm_paddr_t end); 74 vm_page_t vm_phys_alloc_contig(u_long npages, vm_paddr_t low, vm_paddr_t high, 75 u_long alignment, vm_paddr_t boundary); 76 vm_page_t vm_phys_alloc_freelist_pages(int freelist, int pool, int order); 77 vm_page_t vm_phys_alloc_pages(int pool, int order); 78 boolean_t vm_phys_domain_intersects(long mask, vm_paddr_t low, vm_paddr_t high); 79 int vm_phys_fictitious_reg_range(vm_paddr_t start, vm_paddr_t end, 80 vm_memattr_t memattr); 81 void vm_phys_fictitious_unreg_range(vm_paddr_t start, vm_paddr_t end); 82 vm_page_t vm_phys_fictitious_to_vm_page(vm_paddr_t pa); 83 void vm_phys_free_contig(vm_page_t m, u_long npages); 84 void vm_phys_free_pages(vm_page_t m, int order); 85 void vm_phys_init(void); 86 vm_page_t vm_phys_paddr_to_vm_page(vm_paddr_t pa); 87 vm_page_t vm_phys_scan_contig(u_long npages, vm_paddr_t low, vm_paddr_t high, 88 u_long alignment, vm_paddr_t boundary, int options); 89 void vm_phys_set_pool(int pool, vm_page_t m, int order); 90 boolean_t vm_phys_unfree_page(vm_page_t m); 91 int vm_phys_mem_affinity(int f, int t); 92 93 /* 94 * vm_phys_domain: 95 * 96 * Return the memory domain the page belongs to. 97 */ 98 static inline struct vm_domain * 99 vm_phys_domain(vm_page_t m) 100 { 101 #ifdef VM_NUMA_ALLOC 102 int domn, segind; 103 104 /* XXXKIB try to assert that the page is managed */ 105 segind = m->segind; 106 KASSERT(segind < vm_phys_nsegs, ("segind %d m %p", segind, m)); 107 domn = vm_phys_segs[segind].domain; 108 KASSERT(domn < vm_ndomains, ("domain %d m %p", domn, m)); 109 return (&vm_dom[domn]); 110 #else 111 return (&vm_dom[0]); 112 #endif 113 } 114 115 static inline void 116 vm_phys_freecnt_adj(vm_page_t m, int adj) 117 { 118 119 mtx_assert(&vm_page_queue_free_mtx, MA_OWNED); 120 vm_cnt.v_free_count += adj; 121 vm_phys_domain(m)->vmd_free_count += adj; 122 } 123 124 #endif /* _KERNEL */ 125 #endif /* !_VM_PHYS_H_ */ 126