pmap.h revision 1.20
1 /* $NetBSD: pmap.h,v 1.20 2011/01/18 01:02:55 matt Exp $ */ 2 3 /*- 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 6 * All rights reserved. 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. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef _POWERPC_OEA_PMAP_H_ 35 #define _POWERPC_OEA_PMAP_H_ 36 37 #ifdef _KERNEL_OPT 38 #include "opt_ppcarch.h" 39 #endif 40 #include <powerpc/oea/pte.h> 41 42 #ifndef _LOCORE 43 /* 44 * Pmap stuff 45 */ 46 struct pmap { 47 #ifdef PPC_OEA64 48 struct steg *pm_steg_table; /* segment table pointer */ 49 /* XXX need way to track exec pages */ 50 #endif 51 52 #if defined(PPC_OEA) || defined (PPC_OEA64_BRIDGE) 53 register_t pm_sr[16]; /* segments used in this pmap */ 54 int pm_exec[16]; /* counts of exec mappings */ 55 #endif 56 register_t pm_vsid; /* VSID bits */ 57 int pm_refs; /* ref count */ 58 struct pmap_statistics pm_stats; /* pmap statistics */ 59 unsigned int pm_evictions; /* pvo's not in page table */ 60 61 #ifdef PPC_OEA64 62 unsigned int pm_ste_evictions; 63 #endif 64 }; 65 66 struct pmap_ops { 67 int (*pmapop_pte_spill)(struct pmap *, vaddr_t, bool); 68 void (*pmapop_real_memory)(paddr_t *, psize_t *); 69 void (*pmapop_init)(void); 70 void (*pmapop_virtual_space)(vaddr_t *, vaddr_t *); 71 pmap_t (*pmapop_create)(void); 72 void (*pmapop_reference)(pmap_t); 73 void (*pmapop_destroy)(pmap_t); 74 void (*pmapop_copy)(pmap_t, pmap_t, vaddr_t, vsize_t, vaddr_t); 75 void (*pmapop_update)(pmap_t); 76 int (*pmapop_enter)(pmap_t, vaddr_t, paddr_t, vm_prot_t, u_int); 77 void (*pmapop_remove)(pmap_t, vaddr_t, vaddr_t); 78 void (*pmapop_kenter_pa)(vaddr_t, paddr_t, vm_prot_t, u_int); 79 void (*pmapop_kremove)(vaddr_t, vsize_t); 80 bool (*pmapop_extract)(pmap_t, vaddr_t, paddr_t *); 81 82 void (*pmapop_protect)(pmap_t, vaddr_t, vaddr_t, vm_prot_t); 83 void (*pmapop_unwire)(pmap_t, vaddr_t); 84 void (*pmapop_page_protect)(struct vm_page *, vm_prot_t); 85 bool (*pmapop_query_bit)(struct vm_page *, int); 86 bool (*pmapop_clear_bit)(struct vm_page *, int); 87 88 void (*pmapop_activate)(struct lwp *); 89 void (*pmapop_deactivate)(struct lwp *); 90 91 void (*pmapop_pinit)(pmap_t); 92 void (*pmapop_procwr)(struct proc *, vaddr_t, size_t); 93 94 void (*pmapop_pte_print)(volatile struct pte *); 95 void (*pmapop_pteg_check)(void); 96 void (*pmapop_print_mmuregs)(void); 97 void (*pmapop_print_pte)(pmap_t, vaddr_t); 98 void (*pmapop_pteg_dist)(void); 99 void (*pmapop_pvo_verify)(void); 100 vaddr_t (*pmapop_steal_memory)(vsize_t, vaddr_t *, vaddr_t *); 101 void (*pmapop_bootstrap)(paddr_t, paddr_t); 102 }; 103 104 #ifdef _KERNEL 105 #include <sys/cdefs.h> 106 __BEGIN_DECLS 107 #include <sys/param.h> 108 #include <sys/systm.h> 109 110 #if defined (PPC_OEA) || defined (PPC_OEA64_BRIDGE) 111 extern register_t iosrtable[]; 112 #endif 113 extern int pmap_use_altivec; 114 115 #define pmap_clear_modify(pg) (pmap_clear_bit((pg), PTE_CHG)) 116 #define pmap_clear_reference(pg) (pmap_clear_bit((pg), PTE_REF)) 117 #define pmap_is_modified(pg) (pmap_query_bit((pg), PTE_CHG)) 118 #define pmap_is_referenced(pg) (pmap_query_bit((pg), PTE_REF)) 119 120 #define pmap_phys_address(x) (x) 121 122 #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) 123 #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count) 124 125 /* ARGSUSED */ 126 static inline void 127 pmap_remove_all(struct pmap *pmap) 128 { 129 /* Nothing. */ 130 } 131 132 #if (defined(PPC_OEA) + defined(PPC_OEA64) + defined(PPC_OEA64_BRIDGE)) != 1 133 #define PMAP_EXCLUDE_DECLS 134 #endif 135 136 #ifndef PMAP_NOOPNAMES 137 138 #if !defined(PMAP_EXCLUDE_DECLS) 139 void pmap_bootstrap(vaddr_t, vaddr_t); 140 bool pmap_extract(pmap_t, vaddr_t, paddr_t *); 141 bool pmap_query_bit(struct vm_page *, int); 142 bool pmap_clear_bit(struct vm_page *, int); 143 void pmap_real_memory(paddr_t *, psize_t *); 144 void pmap_procwr(struct proc *, vaddr_t, size_t); 145 int pmap_pte_spill(pmap_t, vaddr_t, bool); 146 void pmap_pinit(pmap_t); 147 148 #else 149 #define PMAPOPNAME(name) (*pmapops->pmapop_##name) 150 extern const struct pmap_ops *pmapops; 151 #define pmap_pte_spill PMAPOPNAME(pte_spill) 152 #define pmap_real_memory PMAPOPNAME(real_memory) 153 #define pmap_init PMAPOPNAME(init) 154 #define pmap_virtual_space PMAPOPNAME(virtual_space) 155 #define pmap_create PMAPOPNAME(create) 156 #define pmap_reference PMAPOPNAME(reference) 157 #define pmap_destroy PMAPOPNAME(destroy) 158 #define pmap_copy PMAPOPNAME(copy) 159 #define pmap_update PMAPOPNAME(update) 160 #define pmap_enter PMAPOPNAME(enter) 161 #define pmap_remove PMAPOPNAME(remove) 162 #define pmap_kenter_pa PMAPOPNAME(kenter_pa) 163 #define pmap_kremove PMAPOPNAME(kremove) 164 #define pmap_extract PMAPOPNAME(extract) 165 #define pmap_protect PMAPOPNAME(protect) 166 #define pmap_unwire PMAPOPNAME(unwire) 167 #define pmap_page_protect PMAPOPNAME(page_protect) 168 #define pmap_query_bit PMAPOPNAME(query_bit) 169 #define pmap_clear_bit PMAPOPNAME(clear_bit) 170 171 #define pmap_activate PMAPOPNAME(activate) 172 #define pmap_deactivate PMAPOPNAME(deactivate) 173 174 #define pmap_pinit PMAPOPNAME(pinit) 175 #define pmap_procwr PMAPOPNAME(procwr) 176 177 #define pmap_pte_print PMAPOPNAME(pte_print) 178 #define pmap_pteg_check PMAPOPNAME(pteg_check) 179 #define pmap_print_mmuregs PMAPOPNAME(print_mmuregs) 180 #define pmap_print_pte PMAPOPNAME(print_pte) 181 #define pmap_pteg_dist PMAPOPNAME(pteg_dist) 182 #define pmap_pvo_verify PMAPOPNAME(pvo_verify) 183 #define pmap_steal_memory PMAPOPNAME(steal_memory) 184 #define pmap_bootstrap PMAPOPNAME(bootstrap) 185 #endif /* PMAP_EXCLUDE_DECLS */ 186 187 static inline paddr_t vtophys (vaddr_t); 188 189 /* 190 * Alternate mapping hooks for pool pages. Avoids thrashing the TLB. 191 * 192 * Note: This won't work if we have more memory than can be direct-mapped 193 * VA==PA all at once. But pmap_copy_page() and pmap_zero_page() will have 194 * this problem, too. 195 */ 196 #if !defined(PPC_OEA64) && !defined (PPC_OEA64_BRIDGE) 197 #define PMAP_MAP_POOLPAGE(pa) (pa) 198 #define PMAP_UNMAP_POOLPAGE(pa) (pa) 199 #define POOL_VTOPHYS(va) vtophys((vaddr_t) va) 200 #endif 201 202 static inline paddr_t 203 vtophys(vaddr_t va) 204 { 205 paddr_t pa; 206 207 if (pmap_extract(pmap_kernel(), va, &pa)) 208 return pa; 209 KASSERT(0); 210 return (paddr_t) -1; 211 } 212 213 extern const struct pmap_ops *pmapops; 214 extern const struct pmap_ops pmap32_ops; 215 extern const struct pmap_ops pmap64_ops; 216 extern const struct pmap_ops pmap64bridge_ops; 217 218 static inline void 219 pmap_setup32(void) 220 { 221 pmapops = &pmap32_ops; 222 } 223 224 static inline void 225 pmap_setup64(void) 226 { 227 pmapops = &pmap64_ops; 228 } 229 230 static inline void 231 pmap_setup64bridge(void) 232 { 233 pmapops = &pmap64bridge_ops; 234 } 235 236 #endif /* !PMAP_NOOPNAMES */ 237 238 bool pmap_pageidlezero (paddr_t); 239 void pmap_syncicache (paddr_t, psize_t); 240 #ifdef PPC_OEA64 241 vaddr_t pmap_setusr (vaddr_t); 242 vaddr_t pmap_unsetusr (void); 243 #endif 244 245 #ifdef PPC_OEA64_BRIDGE 246 int pmap_setup_segment0_map(int use_large_pages, ...); 247 #endif 248 249 #define PMAP_MD_NOCACHE 0x1000000 250 #define PMAP_STEAL_MEMORY 251 #define PMAP_NEED_PROCWR 252 253 void pmap_zero_page(paddr_t); 254 void pmap_copy_page(paddr_t, paddr_t); 255 256 LIST_HEAD(pvo_head, pvo_entry); 257 258 #define __HAVE_VM_PAGE_MD 259 260 struct vm_page_md { 261 struct pvo_head mdpg_pvoh; 262 unsigned int mdpg_attrs; 263 }; 264 265 #define VM_MDPAGE_INIT(pg) do { \ 266 LIST_INIT(&(pg)->mdpage.mdpg_pvoh); \ 267 (pg)->mdpage.mdpg_attrs = 0; \ 268 } while (/*CONSTCOND*/0) 269 270 __END_DECLS 271 #endif /* _KERNEL */ 272 #endif /* _LOCORE */ 273 274 #endif /* _POWERPC_OEA_PMAP_H_ */ 275
Indexes created Sun Sep 28 16:09:52 GMT 2025