uvm_pmap.h revision 1.29
1 /* $NetBSD: uvm_pmap.h,v 1.29 2009/08/19 14:58:48 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * The Mach Operating System project at Carnegie-Mellon University. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)pmap.h 8.1 (Berkeley) 6/11/93 35 * 36 * 37 * Copyright (c) 1987, 1990 Carnegie-Mellon University. 38 * All rights reserved. 39 * 40 * Author: Avadis Tevanian, Jr. 41 * 42 * Permission to use, copy, modify and distribute this software and 43 * its documentation is hereby granted, provided that both the copyright 44 * notice and this permission notice appear in all copies of the 45 * software, derivative works or modified versions, and any portions 46 * thereof, and that both notices appear in supporting documentation. 47 * 48 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 49 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 50 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 51 * 52 * Carnegie Mellon requests users of this software to return to 53 * 54 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 55 * School of Computer Science 56 * Carnegie Mellon University 57 * Pittsburgh PA 15213-3890 58 * 59 * any improvements or extensions that they make and grant Carnegie the 60 * rights to redistribute these changes. 61 */ 62 63 /* 64 * Machine address mapping definitions -- machine-independent 65 * section. [For machine-dependent section, see "machine/pmap.h".] 66 */ 67 68 #ifndef _PMAP_VM_ 69 #define _PMAP_VM_ 70 71 struct lwp; /* for pmap_activate()/pmap_deactivate() proto */ 72 73 struct pmap; 74 typedef struct pmap *pmap_t; 75 76 extern struct pmap *const kernel_pmap_ptr; 77 #define pmap_kernel() kernel_pmap_ptr 78 79 /* 80 * Each machine dependent implementation is expected to 81 * keep certain statistics. They may do this anyway they 82 * so choose, but are expected to return the statistics 83 * in the following structure. 84 */ 85 struct pmap_statistics { 86 long resident_count; /* # of pages mapped (total)*/ 87 long wired_count; /* # of pages wired */ 88 }; 89 typedef struct pmap_statistics *pmap_statistics_t; 90 91 #ifdef _KERNEL 92 #include <machine/pmap.h> 93 #endif 94 95 /* 96 * Flags passed to pmap_enter(). Note the bottom 3 bits are VM_PROT_* 97 * bits, used to indicate the access type that was made (to seed modified 98 * and referenced information). 99 * 100 * Flags marked [PA] are for pmap_kenter_pa() only. Flags marked [BOTH] 101 * apply to pmap_kenter_pa() and pmap_enter(). All other flags are valid 102 * for pmap_enter() only. 103 */ 104 #define PMAP_WIRED 0x00000010 /* wired mapping */ 105 #define PMAP_CANFAIL 0x00000020 /* can fail if resource shortage */ 106 #define PMAP_KMPAGE 0x00000040 /* [PA] page used for kernel memory */ 107 108 #define PMAP_MD_MASK 0xff000000 /* Machine-dependent bits */ 109 110 #ifndef PMAP_EXCLUDE_DECLS /* Used in Sparc port to virtualize pmap mod */ 111 #ifdef _KERNEL 112 __BEGIN_DECLS 113 void pmap_activate(struct lwp *); 114 void pmap_deactivate(struct lwp *); 115 void pmap_unwire(pmap_t, vaddr_t); 116 117 #if !defined(pmap_clear_modify) 118 bool pmap_clear_modify(struct vm_page *); 119 #endif 120 #if !defined(pmap_clear_reference) 121 bool pmap_clear_reference(struct vm_page *); 122 #endif 123 124 #if !defined(pmap_collect) 125 void pmap_collect(pmap_t); 126 #endif 127 #if !defined(pmap_copy) 128 void pmap_copy(pmap_t, pmap_t, vaddr_t, vsize_t, vaddr_t); 129 #endif 130 #if !defined(pmap_copy_page) 131 void pmap_copy_page(paddr_t, paddr_t); 132 #endif 133 struct pmap *pmap_create(void); 134 void pmap_destroy(pmap_t); 135 int pmap_enter(pmap_t, vaddr_t, paddr_t, vm_prot_t, u_int); 136 bool pmap_extract(pmap_t, vaddr_t, paddr_t *); 137 #if defined(PMAP_GROWKERNEL) 138 vaddr_t pmap_growkernel(vaddr_t); 139 #endif 140 141 void pmap_init(void); 142 143 void pmap_kenter_pa(vaddr_t, paddr_t, vm_prot_t); 144 void pmap_kremove(vaddr_t, vsize_t); 145 #if !defined(pmap_is_modified) 146 bool pmap_is_modified(struct vm_page *); 147 #endif 148 #if !defined(pmap_is_referenced) 149 bool pmap_is_referenced(struct vm_page *); 150 #endif 151 152 void pmap_page_protect(struct vm_page *, vm_prot_t); 153 154 #if !defined(pmap_phys_address) 155 paddr_t pmap_phys_address(paddr_t); 156 #endif 157 void pmap_protect(pmap_t, vaddr_t, vaddr_t, vm_prot_t); 158 #if !defined(pmap_reference) 159 void pmap_reference(pmap_t); 160 #endif 161 #if !defined(pmap_remove) 162 void pmap_remove(pmap_t, vaddr_t, vaddr_t); 163 #endif 164 void pmap_remove_all(struct pmap *); 165 #if !defined(pmap_update) 166 void pmap_update(pmap_t); 167 #endif 168 #if !defined(pmap_resident_count) 169 long pmap_resident_count(pmap_t); 170 #endif 171 #if !defined(pmap_wired_count) 172 long pmap_wired_count(pmap_t); 173 #endif 174 #if !defined(pmap_zero_page) 175 void pmap_zero_page(paddr_t); 176 #endif 177 178 void pmap_virtual_space(vaddr_t *, vaddr_t *); 179 #if defined(PMAP_STEAL_MEMORY) 180 vaddr_t pmap_steal_memory(vsize_t, vaddr_t *, vaddr_t *); 181 #endif 182 183 #if defined(PMAP_FORK) 184 void pmap_fork(pmap_t, pmap_t); 185 #endif 186 __END_DECLS 187 #endif /* kernel*/ 188 #endif /* PMAP_EXCLUDE_DECLS */ 189 190 #endif /* _PMAP_VM_ */ 191
Indexes created Sun Sep 28 16:09:52 GMT 2025