1 /* 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * The Mach Operating System project at Carnegie-Mellon University. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * from: @(#)pmap.h 8.1 (Berkeley) 6/11/93 33 * 34 * 35 * Copyright (c) 1987, 1990 Carnegie-Mellon University. 36 * All rights reserved. 37 * 38 * Author: Avadis Tevanian, Jr. 39 * 40 * Permission to use, copy, modify and distribute this software and 41 * its documentation is hereby granted, provided that both the copyright 42 * notice and this permission notice appear in all copies of the 43 * software, derivative works or modified versions, and any portions 44 * thereof, and that both notices appear in supporting documentation. 45 * 46 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 47 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 48 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 49 * 50 * Carnegie Mellon requests users of this software to return to 51 * 52 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 53 * School of Computer Science 54 * Carnegie Mellon University 55 * Pittsburgh PA 15213-3890 56 * 57 * any improvements or extensions that they make and grant Carnegie the 58 * rights to redistribute these changes. 59 * 60 * $FreeBSD: src/sys/vm/pmap.h,v 1.33.2.4 2002/03/06 22:44:24 silby Exp $ 61 */ 62 63 /* 64 * Machine address mapping definitions -- machine-independent 65 * section. [For machine-dependent section, see "machine/pmap.h".] 66 */ 67 68 #ifndef _VM_PMAP_H_ 69 #define _VM_PMAP_H_ 70 71 #ifndef _SYS_TYPES_H_ 72 #include <sys/types.h> 73 #endif 74 75 #ifndef _SYS_SPINLOCK_H_ 76 #include <sys/spinlock.h> 77 #endif 78 79 #ifndef _MACHINE_PMAP_H_ 80 #include <machine/pmap.h> 81 #endif 82 83 #ifdef _KERNEL 84 85 #ifndef _VM_VM_H_ 86 #include <vm/vm.h> 87 #endif 88 89 struct lwp; 90 struct proc; 91 struct thread; 92 struct vm_page; 93 struct vmspace; 94 struct vmspace_entry; 95 struct vm_map_entry; 96 97 struct pmap_pgscan_info { 98 struct pmap *pmap; 99 vm_offset_t beg_addr; 100 vm_offset_t end_addr; 101 vm_offset_t offset; 102 vm_pindex_t limit; 103 vm_pindex_t busycount; 104 vm_pindex_t cleancount; 105 vm_pindex_t actioncount; 106 int (*callback)(struct pmap_pgscan_info *, 107 vm_offset_t va, 108 struct vm_page *); 109 }; 110 111 /* 112 * Most of these variables represent parameters set up by low level MD kernel 113 * boot code to be used by higher level MI initialization code to identify 114 * the portions of kernel and physical memory which are free for allocation. 115 * 116 * KvaStart/KvaEnd/ - Reserved Kernel Virtual Memory address space. 117 * KvaSize This range represents the entire KVA space but 118 * might omit certain special mapping areas. It is 119 * used to determine what kernel memory userland has 120 * access to. 121 * 122 * virtual_{start,end} - KVA space available for allocation, not including 123 * KVA space reserved during MD startup. Used by 124 * the KMEM subsystem, used to initialize kernel_map. 125 * 126 * phys_avail[] - Array of {start,end} physical addresses, not 127 * including physical memory allocated by MD startup 128 * code. Used to initialize the VM subsystem. 129 */ 130 extern vm_offset_t KvaStart; 131 extern vm_offset_t KvaEnd; 132 extern vm_offset_t KvaSize; 133 extern vm_offset_t virtual_start; 134 extern vm_offset_t virtual_end; 135 extern vm_offset_t virtual2_start; 136 extern vm_offset_t virtual2_end; 137 extern vm_paddr_t phys_avail[]; 138 139 /* 140 * High-level pmap scan 141 */ 142 void pmap_pgscan(struct pmap_pgscan_info *info); 143 144 /* 145 * Return true if the passed address is in the kernel address space. 146 * This is mainly a check that the address is NOT in the user address space. 147 * 148 * For a vkernels all addresses are in the kernel address space. 149 */ 150 static inline int 151 kva_p(const void *addr) 152 { 153 #ifdef _KERNEL_VIRTUAL 154 return (addr != NULL); 155 #else 156 return ((unsigned long)KvaStart <= (unsigned long)addr) && 157 ((unsigned long)addr < (unsigned long)KvaEnd); 158 #endif 159 } 160 161 void pmap_change_wiring (pmap_t, vm_offset_t, boolean_t, 162 vm_map_entry_t); 163 void pmap_clear_modify (struct vm_page *m); 164 void pmap_clear_reference (struct vm_page *m); 165 void pmap_collect (void); 166 void pmap_copy (pmap_t, pmap_t, vm_offset_t, vm_size_t, 167 vm_offset_t); 168 void pmap_copy_page (vm_paddr_t, vm_paddr_t); 169 void pmap_copy_page_frag (vm_paddr_t, vm_paddr_t, size_t bytes); 170 void pmap_enter (pmap_t, vm_offset_t, struct vm_page *, 171 vm_prot_t, boolean_t, struct vm_map_entry *); 172 void pmap_enter_quick (pmap_t, vm_offset_t, struct vm_page *); 173 vm_page_t pmap_fault_page_quick(pmap_t, vm_offset_t, vm_prot_t); 174 vm_paddr_t pmap_extract (pmap_t pmap, vm_offset_t va); 175 void pmap_growkernel (vm_offset_t, vm_offset_t); 176 void pmap_init (void); 177 boolean_t pmap_is_modified (struct vm_page *m); 178 int pmap_ts_referenced (struct vm_page *m); 179 vm_offset_t pmap_map (vm_offset_t *, vm_paddr_t, vm_paddr_t, int); 180 void pmap_object_init_pt (pmap_t pmap, vm_offset_t addr, 181 vm_prot_t prot, vm_object_t object, vm_pindex_t pindex, 182 vm_offset_t size, int pagelimit); 183 boolean_t pmap_page_exists_quick (pmap_t pmap, struct vm_page *m); 184 void pmap_page_protect (struct vm_page *m, vm_prot_t prot); 185 void pmap_page_init (struct vm_page *m); 186 vm_paddr_t pmap_phys_address (vm_pindex_t); 187 void pmap_pinit (pmap_t); 188 void pmap_puninit (pmap_t); 189 void pmap_pinit0 (pmap_t); 190 void pmap_pinit2 (pmap_t); 191 void pmap_protect (pmap_t, vm_offset_t, vm_offset_t, vm_prot_t); 192 void pmap_remove_specific (pmap_t, vm_page_t); 193 void pmap_qenter (vm_offset_t, struct vm_page **, int); 194 void pmap_qremove (vm_offset_t, int); 195 void pmap_qremove_quick (vm_offset_t, int); 196 void pmap_qremove_noinval (vm_offset_t, int); 197 void pmap_kenter (vm_offset_t, vm_paddr_t); 198 int pmap_kenter_quick (vm_offset_t, vm_paddr_t); 199 int pmap_kenter_noinval (vm_offset_t, vm_paddr_t); 200 void pmap_kmodify_rw(vm_offset_t va); 201 void pmap_kmodify_nc(vm_offset_t va); 202 void pmap_kremove (vm_offset_t); 203 void pmap_kremove_quick (vm_offset_t); 204 void pmap_kremove_noinval (vm_offset_t); 205 void pmap_reference (pmap_t); 206 void pmap_remove (pmap_t, vm_offset_t, vm_offset_t); 207 void pmap_remove_pages (pmap_t, vm_offset_t, vm_offset_t); 208 void pmap_zero_page (vm_paddr_t); 209 void pmap_zero_page_area (vm_paddr_t, int off, int size); 210 int pmap_prefault_ok (pmap_t, vm_offset_t); 211 void pmap_change_attr(vm_offset_t va, vm_size_t count, int mode); 212 int pmap_mincore (pmap_t pmap, vm_offset_t addr); 213 void pmap_init_proc (struct proc *); 214 void pmap_init_thread (struct thread *td); 215 void pmap_replacevm (struct proc *, struct vmspace *, int); 216 void pmap_setlwpvm (struct lwp *, struct vmspace *); 217 vm_paddr_t pmap_kextract(vm_offset_t); 218 void pmap_invalidate_range(pmap_t, vm_offset_t, vm_offset_t); 219 220 vm_offset_t pmap_addr_hint (vm_object_t obj, vm_offset_t addr, vm_size_t size); 221 void *pmap_kenter_temporary (vm_paddr_t pa, long i); 222 void pmap_init2 (void); 223 struct vm_page *pmap_kvtom(vm_offset_t va); 224 void pmap_object_init(vm_object_t object); 225 void pmap_object_free(vm_object_t object); 226 227 228 #endif /* _KERNEL */ 229 230 #endif /* _VM_PMAP_H_ */ 231