pmap.h revision 1.22
1 /* $NetBSD: pmap.h,v 1.22 2011/02/15 19:39:12 macallan 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_resident_count(pmap) ((pmap)->pm_stats.resident_count) 121 #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count) 122 123 /* ARGSUSED */ 124 static inline void 125 pmap_remove_all(struct pmap *pmap) 126 { 127 /* Nothing. */ 128 } 129 130 #if (defined(PPC_OEA) + defined(PPC_OEA64) + defined(PPC_OEA64_BRIDGE)) != 1 131 #define PMAP_NEEDS_FIXUP 132 #endif 133 134 void pmap_bootstrap(vaddr_t, vaddr_t); 135 bool pmap_extract(pmap_t, vaddr_t, paddr_t *); 136 bool pmap_query_bit(struct vm_page *, int); 137 bool pmap_clear_bit(struct vm_page *, int); 138 void pmap_real_memory(paddr_t *, psize_t *); 139 void pmap_procwr(struct proc *, vaddr_t, size_t); 140 int pmap_pte_spill(pmap_t, vaddr_t, bool); 141 void pmap_pinit(pmap_t); 142 143 u_int powerpc_mmap_flags(paddr_t); 144 #define POWERPC_MMAP_FLAG_MASK 0xf 145 #define POWERPC_MMAP_FLAG_PREFETCHABLE 0x1 146 #define POWERPC_MMAP_FLAG_CACHEABLE 0x2 147 148 #define pmap_phys_address(ppn) (ppn & ~POWERPC_MMAP_FLAG_MASK) 149 #define pmap_mmap_flags(ppn) powerpc_mmap_flags(ppn) 150 151 static inline paddr_t vtophys (vaddr_t); 152 153 /* 154 * Alternate mapping hooks for pool pages. Avoids thrashing the TLB. 155 * 156 * Note: This won't work if we have more memory than can be direct-mapped 157 * VA==PA all at once. But pmap_copy_page() and pmap_zero_page() will have 158 * this problem, too. 159 */ 160 #if !defined(PPC_OEA64) && !defined (PPC_OEA64_BRIDGE) 161 #define PMAP_MAP_POOLPAGE(pa) (pa) 162 #define PMAP_UNMAP_POOLPAGE(pa) (pa) 163 #define POOL_VTOPHYS(va) vtophys((vaddr_t) va) 164 #endif 165 166 static inline paddr_t 167 vtophys(vaddr_t va) 168 { 169 paddr_t pa; 170 171 if (pmap_extract(pmap_kernel(), va, &pa)) 172 return pa; 173 KASSERTMSG(0, ("vtophys: pmap_extract of %#"PRIxVADDR" failed", va)); 174 return (paddr_t) -1; 175 } 176 177 178 #ifdef PMAP_NEEDS_FIXUP 179 extern const struct pmap_ops *pmapops; 180 extern const struct pmap_ops pmap32_ops; 181 extern const struct pmap_ops pmap64_ops; 182 extern const struct pmap_ops pmap64bridge_ops; 183 184 void pmap_fixup_stubs(const struct pmap_ops *); 185 186 static inline void 187 pmap_setup32(void) 188 { 189 pmap_fixup_stubs(&pmap32_ops); 190 } 191 192 static inline void 193 pmap_setup64(void) 194 { 195 pmap_fixup_stubs(&pmap64_ops); 196 } 197 198 static inline void 199 pmap_setup64bridge(void) 200 { 201 pmap_fixup_stubs(&pmap64bridge_ops); 202 } 203 #endif 204 205 bool pmap_pageidlezero (paddr_t); 206 void pmap_syncicache (paddr_t, psize_t); 207 #ifdef PPC_OEA64 208 vaddr_t pmap_setusr (vaddr_t); 209 vaddr_t pmap_unsetusr (void); 210 #endif 211 212 #ifdef PPC_OEA64_BRIDGE 213 int pmap_setup_segment0_map(int use_large_pages, ...); 214 #endif 215 216 #define PMAP_MD_NOCACHE 0x1000000 217 #define PMAP_MD_PREFETCHABLE 0x2000000 218 #define PMAP_STEAL_MEMORY 219 #define PMAP_NEED_PROCWR 220 221 void pmap_zero_page(paddr_t); 222 void pmap_copy_page(paddr_t, paddr_t); 223 224 LIST_HEAD(pvo_head, pvo_entry); 225 226 #define __HAVE_VM_PAGE_MD 227 228 struct vm_page_md { 229 struct pvo_head mdpg_pvoh; 230 unsigned int mdpg_attrs; 231 }; 232 233 #define VM_MDPAGE_INIT(pg) do { \ 234 LIST_INIT(&(pg)->mdpage.mdpg_pvoh); \ 235 (pg)->mdpage.mdpg_attrs = 0; \ 236 } while (/*CONSTCOND*/0) 237 238 __END_DECLS 239 #endif /* _KERNEL */ 240 #endif /* _LOCORE */ 241 242 #endif /* _POWERPC_OEA_PMAP_H_ */ 243
Indexes created Sun Sep 28 12:09:53 GMT 2025