1 /* $NetBSD: pmap.h,v 1.40 2026/06/30 17:21:18 rkujawa 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 _LOCORE 38 #error use assym.h instead 39 #endif 40 41 #ifdef _MODULE 42 #error this file should not be included by loadable kernel modules 43 #endif 44 45 #ifdef _KERNEL_OPT 46 #include "opt_ppcarch.h" 47 #include "opt_modular.h" 48 #endif 49 #include <powerpc/oea/pte.h> 50 51 #define __HAVE_PMAP_PV_TRACK 52 #include <uvm/pmap/pmap_pvt.h> 53 54 /* 55 * Pmap stuff 56 */ 57 struct pmap { 58 #ifdef PPC_OEA64 59 struct steg *pm_steg_table; /* segment table pointer */ 60 /* XXX need way to track exec pages */ 61 #endif 62 63 #if defined(PPC_OEA) || defined (PPC_OEA64_BRIDGE) 64 register_t pm_sr[16]; /* segments used in this pmap */ 65 int pm_exec[16]; /* counts of exec mappings */ 66 #endif 67 register_t pm_vsid; /* VSID bits */ 68 int pm_refs; /* ref count */ 69 struct pmap_statistics pm_stats; /* pmap statistics */ 70 unsigned int pm_evictions; /* pvo's not in page table */ 71 72 #ifdef PPC_OEA64 73 unsigned int pm_ste_evictions; 74 #endif 75 }; 76 77 struct pmap_ops { 78 int (*pmapop_pte_spill)(struct pmap *, vaddr_t, bool); 79 void (*pmapop_real_memory)(paddr_t *, psize_t *); 80 void (*pmapop_init)(void); 81 void (*pmapop_virtual_space)(vaddr_t *, vaddr_t *); 82 pmap_t (*pmapop_create)(void); 83 void (*pmapop_reference)(pmap_t); 84 void (*pmapop_destroy)(pmap_t); 85 void (*pmapop_copy)(pmap_t, pmap_t, vaddr_t, vsize_t, vaddr_t); 86 void (*pmapop_update)(pmap_t); 87 int (*pmapop_enter)(pmap_t, vaddr_t, paddr_t, vm_prot_t, u_int); 88 void (*pmapop_remove)(pmap_t, vaddr_t, vaddr_t); 89 void (*pmapop_kenter_pa)(vaddr_t, paddr_t, vm_prot_t, u_int); 90 void (*pmapop_kremove)(vaddr_t, vsize_t); 91 bool (*pmapop_extract)(pmap_t, vaddr_t, paddr_t *); 92 93 void (*pmapop_protect)(pmap_t, vaddr_t, vaddr_t, vm_prot_t); 94 void (*pmapop_unwire)(pmap_t, vaddr_t); 95 void (*pmapop_page_protect)(struct vm_page *, vm_prot_t); 96 void (*pmapop_pv_protect)(paddr_t, vm_prot_t); 97 bool (*pmapop_query_bit)(struct vm_page *, int); 98 bool (*pmapop_clear_bit)(struct vm_page *, int); 99 100 void (*pmapop_activate)(struct lwp *); 101 void (*pmapop_deactivate)(struct lwp *); 102 103 void (*pmapop_pinit)(pmap_t); 104 void (*pmapop_procwr)(struct proc *, vaddr_t, size_t); 105 106 void (*pmapop_pte_print)(volatile struct pte *); 107 void (*pmapop_pteg_check)(void); 108 void (*pmapop_print_mmuregs)(void); 109 void (*pmapop_print_pte)(pmap_t, vaddr_t); 110 void (*pmapop_pteg_dist)(void); 111 void (*pmapop_pvo_verify)(void); 112 vaddr_t (*pmapop_steal_memory)(vsize_t, vaddr_t *, vaddr_t *); 113 void (*pmapop_bootstrap)(paddr_t, paddr_t); 114 void (*pmapop_bootstrap1)(paddr_t, paddr_t); 115 void (*pmapop_bootstrap2)(void); 116 }; 117 118 #ifdef _KERNEL 119 #include <sys/cdefs.h> 120 __BEGIN_DECLS 121 #include <sys/param.h> 122 #include <sys/systm.h> 123 124 /* 125 * Physical memory below PMAP_DIRECT_MAPPED_LEN is direct-mapped 126 * (pa == va). Direct region covers the segments below BOTH 127 * the user copyin window (USER_SR) and the kernel HTAB window 128 * (KERNEL_SR), so it can never overlap. 129 */ 130 #if defined(PPC_OEA) || defined(PPC_OEA64_BRIDGE) 131 #define PMAP_DIRECT_MAPPED_SR (MIN(USER_SR, KERNEL_SR) - 1) 132 #define PMAP_DIRECT_MAPPED_LEN \ 133 ((vaddr_t)SEGMENT_LENGTH * (PMAP_DIRECT_MAPPED_SR + 1)) 134 #endif 135 136 #if defined (PPC_OEA) || defined (PPC_OEA64_BRIDGE) 137 extern register_t iosrtable[]; 138 #endif 139 extern int pmap_use_altivec; 140 141 #define pmap_clear_modify(pg) (pmap_clear_bit((pg), PTE_CHG)) 142 #define pmap_clear_reference(pg) (pmap_clear_bit((pg), PTE_REF)) 143 #define pmap_is_modified(pg) (pmap_query_bit((pg), PTE_CHG)) 144 #define pmap_is_referenced(pg) (pmap_query_bit((pg), PTE_REF)) 145 146 #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) 147 #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count) 148 149 /* ARGSUSED */ 150 static __inline bool 151 pmap_remove_all(struct pmap *pmap) 152 { 153 /* Nothing. */ 154 return false; 155 } 156 157 #if (defined(PPC_OEA) + defined(PPC_OEA64) + defined(PPC_OEA64_BRIDGE)) != 1 158 #define PMAP_NEEDS_FIXUP 159 #endif 160 161 extern volatile struct pteg *pmap_pteg_table; 162 extern unsigned int pmap_pteg_cnt; 163 extern unsigned int pmap_pteg_mask; 164 165 void pmap_bootstrap(vaddr_t, vaddr_t); 166 void pmap_bootstrap1(vaddr_t, vaddr_t); 167 void pmap_bootstrap2(void); 168 bool pmap_extract(pmap_t, vaddr_t, paddr_t *); 169 bool pmap_query_bit(struct vm_page *, int); 170 bool pmap_clear_bit(struct vm_page *, int); 171 void pmap_real_memory(paddr_t *, psize_t *); 172 void pmap_procwr(struct proc *, vaddr_t, size_t); 173 int pmap_pte_spill(pmap_t, vaddr_t, bool); 174 int pmap_ste_spill(pmap_t, vaddr_t, bool); 175 void pmap_pinit(pmap_t); 176 177 #ifdef PPC_OEA601 178 bool pmap_extract_ioseg601(vaddr_t, paddr_t *); 179 #endif /* PPC_OEA601 */ 180 #ifdef PPC_OEA 181 bool pmap_extract_battable(vaddr_t, paddr_t *); 182 #endif /* PPC_OEA */ 183 184 u_int powerpc_mmap_flags(paddr_t); 185 #define POWERPC_MMAP_FLAG_MASK 0xf 186 #define POWERPC_MMAP_FLAG_PREFETCHABLE 0x1 187 #define POWERPC_MMAP_FLAG_CACHEABLE 0x2 188 189 #define pmap_phys_address(ppn) (ppn & ~POWERPC_MMAP_FLAG_MASK) 190 #define pmap_mmap_flags(ppn) powerpc_mmap_flags(ppn) 191 192 static __inline paddr_t vtophys (vaddr_t); 193 194 /* 195 * Alternate mapping hooks for pool pages. Avoids thrashing the TLB. 196 * 197 * Note: This won't work if we have more memory than can be direct-mapped 198 * VA==PA all at once. But pmap_copy_page() and pmap_zero_page() will have 199 * this problem, too. 200 */ 201 #if !defined(PPC_OEA64) 202 #define PMAP_MAP_POOLPAGE(pa) (pa) 203 #define PMAP_UNMAP_POOLPAGE(pa) (pa) 204 #define POOL_VTOPHYS(va) vtophys((vaddr_t) va) 205 206 #define PMAP_ALLOC_POOLPAGE(flags) pmap_alloc_poolpage(flags) 207 struct vm_page *pmap_alloc_poolpage(int); 208 #endif 209 210 static __inline paddr_t 211 vtophys(vaddr_t va) 212 { 213 paddr_t pa; 214 215 if (pmap_extract(pmap_kernel(), va, &pa)) 216 return pa; 217 KASSERTMSG(0, "vtophys: pmap_extract of %#"PRIxVADDR" failed", va); 218 return (paddr_t) -1; 219 } 220 221 222 #ifdef PMAP_NEEDS_FIXUP 223 extern const struct pmap_ops *pmapops; 224 extern const struct pmap_ops pmap32_ops; 225 extern const struct pmap_ops pmap64_ops; 226 extern const struct pmap_ops pmap64bridge_ops; 227 228 static __inline void 229 pmap_setup32(void) 230 { 231 pmapops = &pmap32_ops; 232 } 233 234 static __inline void 235 pmap_setup64(void) 236 { 237 pmapops = &pmap64_ops; 238 } 239 240 static __inline void 241 pmap_setup64bridge(void) 242 { 243 pmapops = &pmap64bridge_ops; 244 } 245 #endif 246 247 bool pmap_pageidlezero (paddr_t); 248 void pmap_syncicache (paddr_t, psize_t); 249 #ifdef PPC_OEA64 250 vaddr_t pmap_setusr (vaddr_t); 251 vaddr_t pmap_unsetusr (void); 252 #endif 253 254 #ifdef PPC_OEA64_BRIDGE 255 int pmap_setup_segment0_map(int use_large_pages, ...); 256 #endif 257 258 #define PMAP_MD_PREFETCHABLE 0x2000000 259 #define PMAP_STEAL_MEMORY 260 #define PMAP_NEED_PROCWR 261 262 void pmap_zero_page(paddr_t); 263 void pmap_copy_page(paddr_t, paddr_t); 264 265 LIST_HEAD(pvo_head, pvo_entry); 266 267 #define __HAVE_VM_PAGE_MD 268 269 struct pmap_page { 270 unsigned int pp_attrs; 271 struct pvo_head pp_pvoh; 272 #ifdef MODULAR 273 uintptr_t pp_dummy[3]; 274 #endif 275 }; 276 277 struct vm_page_md { 278 struct pmap_page mdpg_pp; 279 #define mdpg_attrs mdpg_pp.pp_attrs 280 #define mdpg_pvoh mdpg_pp.pp_pvoh 281 #ifdef MODULAR 282 #define mdpg_dummy mdpg_pp.pp_dummy 283 #endif 284 }; 285 286 #define VM_MDPAGE_INIT(pg) do { \ 287 (pg)->mdpage.mdpg_attrs = 0; \ 288 LIST_INIT(&(pg)->mdpage.mdpg_pvoh); \ 289 } while (/*CONSTCOND*/0) 290 291 __END_DECLS 292 #endif /* _KERNEL */ 293 294 #endif /* _POWERPC_OEA_PMAP_H_ */ 295
Indexes created Tue Jul 07 00:25:39 UTC 2026