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 /* 98 * Most of these variables represent parameters set up by low level MD kernel 99 * boot code to be used by higher level MI initialization code to identify 100 * the portions of kernel and physical memory which are free for allocation. 101 * 102 * KvaStart/KvaEnd/ - Reserved Kernel Virtual Memory address space. 103 * KvaSize This range represents the entire KVA space but 104 * might omit certain special mapping areas. It is 105 * used to determine what kernel memory userland has 106 * access to. 107 * 108 * virtual_{start,end} - KVA space available for allocation, not including 109 * KVA space reserved during MD startup. Used by 110 * the KMEM subsystem, used to initialize kernel_map. 111 * 112 * phys_avail[] - Array of {start,end} physical addresses, not 113 * including physical memory allocated by MD startup 114 * code. Used to initialize the VM subsystem. 115 */ 116 extern vm_offset_t KvaStart; 117 extern vm_offset_t KvaEnd; 118 extern vm_offset_t KvaSize; 119 extern vm_offset_t virtual_start; 120 extern vm_offset_t virtual_end; 121 extern vm_offset_t virtual2_start; 122 extern vm_offset_t virtual2_end; 123 extern vm_paddr_t phys_avail[]; 124 125 /* 126 * Return true if the passed address is in the kernel address space. 127 * This is mainly a check that the address is NOT in the user address space. 128 * 129 * For a vkernels all addresses are in the kernel address space. 130 */ 131 static inline int 132 kva_p(const void *addr) 133 { 134 #ifdef _KERNEL_VIRTUAL 135 return (addr != NULL); 136 #else 137 return ((unsigned long)KvaStart <= (unsigned long)addr) && 138 ((unsigned long)addr < (unsigned long)KvaEnd); 139 #endif 140 } 141 142 void pmap_change_wiring (pmap_t, vm_offset_t, boolean_t, 143 vm_map_entry_t); 144 void pmap_clear_modify (struct vm_page *m); 145 void pmap_clear_reference (struct vm_page *m); 146 void pmap_collect (void); 147 void pmap_copy (pmap_t, pmap_t, vm_offset_t, vm_size_t, 148 vm_offset_t); 149 void pmap_copy_page (vm_paddr_t, vm_paddr_t); 150 void pmap_copy_page_frag (vm_paddr_t, vm_paddr_t, size_t bytes); 151 void pmap_enter (pmap_t, vm_offset_t, struct vm_page *, 152 vm_prot_t, boolean_t, struct vm_map_entry *); 153 void pmap_enter_quick (pmap_t, vm_offset_t, struct vm_page *); 154 vm_page_t pmap_fault_page_quick(pmap_t, vm_offset_t, vm_prot_t); 155 vm_paddr_t pmap_extract (pmap_t pmap, vm_offset_t va); 156 void pmap_growkernel (vm_offset_t, vm_offset_t); 157 void pmap_init (void); 158 boolean_t pmap_is_modified (struct vm_page *m); 159 int pmap_ts_referenced (struct vm_page *m); 160 vm_offset_t pmap_map (vm_offset_t *, vm_paddr_t, vm_paddr_t, int); 161 void pmap_object_init_pt (pmap_t pmap, vm_offset_t addr, 162 vm_prot_t prot, vm_object_t object, vm_pindex_t pindex, 163 vm_offset_t size, int pagelimit); 164 boolean_t pmap_page_exists_quick (pmap_t pmap, struct vm_page *m); 165 void pmap_page_protect (struct vm_page *m, vm_prot_t prot); 166 void pmap_page_init (struct vm_page *m); 167 vm_paddr_t pmap_phys_address (vm_pindex_t); 168 void pmap_pinit (pmap_t); 169 void pmap_puninit (pmap_t); 170 void pmap_pinit0 (pmap_t); 171 void pmap_pinit2 (pmap_t); 172 void pmap_protect (pmap_t, vm_offset_t, vm_offset_t, vm_prot_t); 173 void pmap_qenter (vm_offset_t, struct vm_page **, int); 174 void pmap_qremove (vm_offset_t, int); 175 void pmap_kenter (vm_offset_t, vm_paddr_t); 176 void pmap_kenter_quick (vm_offset_t, vm_paddr_t); 177 void pmap_kenter_sync (vm_offset_t); 178 void pmap_kenter_sync_quick (vm_offset_t); 179 void pmap_kmodify_rw(vm_offset_t va); 180 void pmap_kmodify_nc(vm_offset_t va); 181 void pmap_kremove (vm_offset_t); 182 void pmap_kremove_quick (vm_offset_t); 183 void pmap_reference (pmap_t); 184 void pmap_remove (pmap_t, vm_offset_t, vm_offset_t); 185 void pmap_remove_pages (pmap_t, vm_offset_t, vm_offset_t); 186 void pmap_zero_page (vm_paddr_t); 187 void pmap_page_assertzero (vm_paddr_t); 188 void pmap_zero_page_area (vm_paddr_t, int off, int size); 189 int pmap_prefault_ok (pmap_t, vm_offset_t); 190 void pmap_change_attr(vm_offset_t va, vm_size_t count, int mode); 191 int pmap_mincore (pmap_t pmap, vm_offset_t addr); 192 void pmap_init_proc (struct proc *); 193 void pmap_init_thread (struct thread *td); 194 void pmap_replacevm (struct proc *, struct vmspace *, int); 195 void pmap_setlwpvm (struct lwp *, struct vmspace *); 196 197 vm_offset_t pmap_addr_hint (vm_object_t obj, vm_offset_t addr, vm_size_t size); 198 void *pmap_kenter_temporary (vm_paddr_t pa, long i); 199 void pmap_init2 (void); 200 struct vm_page *pmap_kvtom(vm_offset_t va); 201 void pmap_object_init(vm_object_t object); 202 void pmap_object_free(vm_object_t object); 203 204 205 #endif /* _KERNEL */ 206 207 #endif /* _VM_PMAP_H_ */ 208