pmap.h revision 1.29
1 /* $NetBSD: pmap.h,v 1.29 2018/04/19 21:50:07 christos 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 #if defined(_LKM) || defined(_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 #endif 48 #include <powerpc/oea/pte.h> 49 50 /* 51 * Pmap stuff 52 */ 53 struct pmap { 54 #ifdef PPC_OEA64 55 struct steg *pm_steg_table; /* segment table pointer */ 56 /* XXX need way to track exec pages */ 57 #endif 58 59 #if defined(PPC_OEA) || defined (PPC_OEA64_BRIDGE) 60 register_t pm_sr[16]; /* segments used in this pmap */ 61 int pm_exec[16]; /* counts of exec mappings */ 62 #endif 63 register_t pm_vsid; /* VSID bits */ 64 int pm_refs; /* ref count */ 65 struct pmap_statistics pm_stats; /* pmap statistics */ 66 unsigned int pm_evictions; /* pvo's not in page table */ 67 68 #ifdef PPC_OEA64 69 unsigned int pm_ste_evictions; 70 #endif 71 }; 72 73 struct pmap_ops { 74 int (*pmapop_pte_spill)(struct pmap *, vaddr_t, bool); 75 void (*pmapop_real_memory)(paddr_t *, psize_t *); 76 void (*pmapop_init)(void); 77 void (*pmapop_virtual_space)(vaddr_t *, vaddr_t *); 78 pmap_t (*pmapop_create)(void); 79 void (*pmapop_reference)(pmap_t); 80 void (*pmapop_destroy)(pmap_t); 81 void (*pmapop_copy)(pmap_t, pmap_t, vaddr_t, vsize_t, vaddr_t); 82 void (*pmapop_update)(pmap_t); 83 int (*pmapop_enter)(pmap_t, vaddr_t, paddr_t, vm_prot_t, u_int); 84 void (*pmapop_remove)(pmap_t, vaddr_t, vaddr_t); 85 void (*pmapop_kenter_pa)(vaddr_t, paddr_t, vm_prot_t, u_int); 86 void (*pmapop_kremove)(vaddr_t, vsize_t); 87 bool (*pmapop_extract)(pmap_t, vaddr_t, paddr_t *); 88 89 void (*pmapop_protect)(pmap_t, vaddr_t, vaddr_t, vm_prot_t); 90 void (*pmapop_unwire)(pmap_t, vaddr_t); 91 void (*pmapop_page_protect)(struct vm_page *, vm_prot_t); 92 bool (*pmapop_query_bit)(struct vm_page *, int); 93 bool (*pmapop_clear_bit)(struct vm_page *, int); 94 95 void (*pmapop_activate)(struct lwp *); 96 void (*pmapop_deactivate)(struct lwp *); 97 98 void (*pmapop_pinit)(pmap_t); 99 void (*pmapop_procwr)(struct proc *, vaddr_t, size_t); 100 101 void (*pmapop_pte_print)(volatile struct pte *); 102 void (*pmapop_pteg_check)(void); 103 void (*pmapop_print_mmuregs)(void); 104 void (*pmapop_print_pte)(pmap_t, vaddr_t); 105 void (*pmapop_pteg_dist)(void); 106 void (*pmapop_pvo_verify)(void); 107 vaddr_t (*pmapop_steal_memory)(vsize_t, vaddr_t *, vaddr_t *); 108 void (*pmapop_bootstrap)(paddr_t, paddr_t); 109 }; 110 111 #ifdef _KERNEL 112 #include <sys/cdefs.h> 113 __BEGIN_DECLS 114 #include <sys/param.h> 115 #include <sys/systm.h> 116 117 #if defined (PPC_OEA) || defined (PPC_OEA64_BRIDGE) 118 extern register_t iosrtable[]; 119 #endif 120 extern int pmap_use_altivec; 121 122 #define pmap_clear_modify(pg) (pmap_clear_bit((pg), PTE_CHG)) 123 #define pmap_clear_reference(pg) (pmap_clear_bit((pg), PTE_REF)) 124 #define pmap_is_modified(pg) (pmap_query_bit((pg), PTE_CHG)) 125 #define pmap_is_referenced(pg) (pmap_query_bit((pg), PTE_REF)) 126 127 #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) 128 #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count) 129 130 /* ARGSUSED */ 131 static __inline void 132 pmap_remove_all(struct pmap *pmap) 133 { 134 /* Nothing. */ 135 } 136 137 #if (defined(PPC_OEA) + defined(PPC_OEA64) + defined(PPC_OEA64_BRIDGE)) != 1 138 #define PMAP_NEEDS_FIXUP 139 #endif 140 141 extern volatile struct pteg *pmap_pteg_table; 142 extern unsigned int pmap_pteg_cnt; 143 extern unsigned int pmap_pteg_mask; 144 145 void pmap_bootstrap(vaddr_t, vaddr_t); 146 bool pmap_extract(pmap_t, vaddr_t, paddr_t *); 147 bool pmap_query_bit(struct vm_page *, int); 148 bool pmap_clear_bit(struct vm_page *, int); 149 void pmap_real_memory(paddr_t *, psize_t *); 150 void pmap_procwr(struct proc *, vaddr_t, size_t); 151 int pmap_pte_spill(pmap_t, vaddr_t, bool); 152 int pmap_ste_spill(pmap_t, vaddr_t, bool); 153 void pmap_pinit(pmap_t); 154 155 u_int powerpc_mmap_flags(paddr_t); 156 #define POWERPC_MMAP_FLAG_MASK 0xf 157 #define POWERPC_MMAP_FLAG_PREFETCHABLE 0x1 158 #define POWERPC_MMAP_FLAG_CACHEABLE 0x2 159 160 #define pmap_phys_address(ppn) (ppn & ~POWERPC_MMAP_FLAG_MASK) 161 #define pmap_mmap_flags(ppn) powerpc_mmap_flags(ppn) 162 163 static __inline paddr_t vtophys (vaddr_t); 164 165 /* 166 * Alternate mapping hooks for pool pages. Avoids thrashing the TLB. 167 * 168 * Note: This won't work if we have more memory than can be direct-mapped 169 * VA==PA all at once. But pmap_copy_page() and pmap_zero_page() will have 170 * this problem, too. 171 */ 172 #if !defined(PPC_OEA64) && !defined (PPC_OEA64_BRIDGE) 173 #define PMAP_MAP_POOLPAGE(pa) (pa) 174 #define PMAP_UNMAP_POOLPAGE(pa) (pa) 175 #define POOL_VTOPHYS(va) vtophys((vaddr_t) va) 176 #endif 177 178 static __inline paddr_t 179 vtophys(vaddr_t va) 180 { 181 paddr_t pa; 182 183 if (pmap_extract(pmap_kernel(), va, &pa)) 184 return pa; 185 KASSERTMSG(0, "vtophys: pmap_extract of %#"PRIxVADDR" failed", va); 186 return (paddr_t) -1; 187 } 188 189 190 #ifdef PMAP_NEEDS_FIXUP 191 extern const struct pmap_ops *pmapops; 192 extern const struct pmap_ops pmap32_ops; 193 extern const struct pmap_ops pmap64_ops; 194 extern const struct pmap_ops pmap64bridge_ops; 195 196 static __inline void 197 pmap_setup32(void) 198 { 199 pmapops = &pmap32_ops; 200 } 201 202 static __inline void 203 pmap_setup64(void) 204 { 205 pmapops = &pmap64_ops; 206 } 207 208 static __inline void 209 pmap_setup64bridge(void) 210 { 211 pmapops = &pmap64bridge_ops; 212 } 213 #endif 214 215 bool pmap_pageidlezero (paddr_t); 216 void pmap_syncicache (paddr_t, psize_t); 217 #ifdef PPC_OEA64 218 vaddr_t pmap_setusr (vaddr_t); 219 vaddr_t pmap_unsetusr (void); 220 #endif 221 222 #ifdef PPC_OEA64_BRIDGE 223 int pmap_setup_segment0_map(int use_large_pages, ...); 224 #endif 225 226 #define PMAP_MD_PREFETCHABLE 0x2000000 227 #define PMAP_STEAL_MEMORY 228 #define PMAP_NEED_PROCWR 229 230 void pmap_zero_page(paddr_t); 231 void pmap_copy_page(paddr_t, paddr_t); 232 233 LIST_HEAD(pvo_head, pvo_entry); 234 235 #define __HAVE_VM_PAGE_MD 236 237 struct vm_page_md { 238 unsigned int mdpg_attrs; 239 struct pvo_head mdpg_pvoh; 240 #ifdef MODULAR 241 uintptr_t mdpg_dummy[3]; 242 #endif 243 }; 244 245 #define VM_MDPAGE_INIT(pg) do { \ 246 (pg)->mdpage.mdpg_attrs = 0; \ 247 LIST_INIT(&(pg)->mdpage.mdpg_pvoh); \ 248 } while (/*CONSTCOND*/0) 249 250 __END_DECLS 251 #endif /* _KERNEL */ 252 253 #endif /* _POWERPC_OEA_PMAP_H_ */ 254
Indexes created Mon Sep 29 21:09:56 GMT 2025