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 45 extern vm_paddr_t phys_avail[]; 46 47 /* Domains must be dense (non-sparse) and zero-based. */ 48 struct mem_affinity { 49 vm_paddr_t start; 50 vm_paddr_t end; 51 int domain; 52 }; 53 #ifdef NUMA 54 extern struct mem_affinity *mem_affinity; 55 extern int *mem_locality; 56 #endif 57 58 /* 59 * The following functions are only to be used by the virtual memory system. 60 */ 61 void vm_phys_add_seg(vm_paddr_t start, vm_paddr_t end); 62 vm_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); 64 vm_page_t vm_phys_alloc_freelist_pages(int domain, int freelist, int pool, 65 int order); 66 int vm_phys_alloc_npages(int domain, int pool, int npages, vm_page_t ma[]); 67 vm_page_t vm_phys_alloc_pages(int domain, int pool, int order); 68 int vm_phys_domain_match(int prefer, vm_paddr_t low, vm_paddr_t high); 69 void vm_phys_enqueue_contig(vm_page_t m, u_long npages); 70 int vm_phys_fictitious_reg_range(vm_paddr_t start, vm_paddr_t end, 71 vm_memattr_t memattr); 72 void vm_phys_fictitious_unreg_range(vm_paddr_t start, vm_paddr_t end); 73 vm_page_t vm_phys_fictitious_to_vm_page(vm_paddr_t pa); 74 void vm_phys_free_contig(vm_page_t m, u_long npages); 75 void vm_phys_free_pages(vm_page_t m, int order); 76 void vm_phys_init(void); 77 vm_page_t vm_phys_paddr_to_vm_page(vm_paddr_t pa); 78 void vm_phys_register_domains(int ndomains, struct mem_affinity *affinity, 79 int *locality); 80 vm_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); 82 void vm_phys_set_pool(int pool, vm_page_t m, int order); 83 boolean_t vm_phys_unfree_page(vm_page_t m); 84 int vm_phys_mem_affinity(int f, int t); 85 void vm_phys_early_add_seg(vm_paddr_t start, vm_paddr_t end); 86 vm_paddr_t vm_phys_early_alloc(int domain, size_t alloc_size); 87 void vm_phys_early_startup(void); 88 int vm_phys_avail_largest(void); 89 vm_paddr_t vm_phys_avail_size(int i); 90 91 static inline int 92 vm_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