pmap.h revision 1.32
1 /* $NetBSD: pmap.h,v 1.32 2020/07/06 10:57:03 rin 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 /* 52 * Pmap stuff 53 */ 54 struct pmap { 55 #ifdef PPC_OEA64 56 struct steg *pm_steg_table; /* segment table pointer */ 57 /* XXX need way to track exec pages */ 58 #endif 59 60 #if defined(PPC_OEA) || defined (PPC_OEA64_BRIDGE) 61 register_t pm_sr[16]; /* segments used in this pmap */ 62 int pm_exec[16]; /* counts of exec mappings */ 63 #endif 64 register_t pm_vsid; /* VSID bits */ 65 int pm_refs; /* ref count */ 66 struct pmap_statistics pm_stats; /* pmap statistics */ 67 unsigned int pm_evictions; /* pvo's not in page table */ 68 69 #ifdef PPC_OEA64 70 unsigned int pm_ste_evictions; 71 #endif 72 }; 73 74 struct pmap_ops { 75 int (*pmapop_pte_spill)(struct pmap *, vaddr_t, bool); 76 void (*pmapop_real_memory)(paddr_t *, psize_t *); 77 void (*pmapop_init)(void); 78 void (*pmapop_virtual_space)(vaddr_t *, vaddr_t *); 79 pmap_t (*pmapop_create)(void); 80 void (*pmapop_reference)(pmap_t); 81 void (*pmapop_destroy)(pmap_t); 82 void (*pmapop_copy)(pmap_t, pmap_t, vaddr_t, vsize_t, vaddr_t); 83 void (*pmapop_update)(pmap_t); 84 int (*pmapop_enter)(pmap_t, vaddr_t, paddr_t, vm_prot_t, u_int); 85 void (*pmapop_remove)(pmap_t, vaddr_t, vaddr_t); 86 void (*pmapop_kenter_pa)(vaddr_t, paddr_t, vm_prot_t, u_int); 87 void (*pmapop_kremove)(vaddr_t, vsize_t); 88 bool (*pmapop_extract)(pmap_t, vaddr_t, paddr_t *); 89 90 void (*pmapop_protect)(pmap_t, vaddr_t, vaddr_t, vm_prot_t); 91 void (*pmapop_unwire)(pmap_t, vaddr_t); 92 void (*pmapop_page_protect)(struct vm_page *, vm_prot_t); 93 bool (*pmapop_query_bit)(struct vm_page *, int); 94 bool (*pmapop_clear_bit)(struct vm_page *, int); 95 96 void (*pmapop_activate)(struct lwp *); 97 void (*pmapop_deactivate)(struct lwp *); 98 99 void (*pmapop_pinit)(pmap_t); 100 void (*pmapop_procwr)(struct proc *, vaddr_t, size_t); 101 102 void (*pmapop_pte_print)(volatile struct pte *); 103 void (*pmapop_pteg_check)(void); 104 void (*pmapop_print_mmuregs)(void); 105 void (*pmapop_print_pte)(pmap_t, vaddr_t); 106 void (*pmapop_pteg_dist)(void); 107 void (*pmapop_pvo_verify)(void); 108 vaddr_t (*pmapop_steal_memory)(vsize_t, vaddr_t *, vaddr_t *); 109 void (*pmapop_bootstrap)(paddr_t, paddr_t); 110 }; 111 112 #ifdef _KERNEL 113 #include <sys/cdefs.h> 114 __BEGIN_DECLS 115 #include <sys/param.h> 116 #include <sys/systm.h> 117 118 #if defined (PPC_OEA) || defined (PPC_OEA64_BRIDGE) 119 extern register_t iosrtable[]; 120 #endif 121 extern int pmap_use_altivec; 122 123 #define pmap_clear_modify(pg) (pmap_clear_bit((pg), PTE_CHG)) 124 #define pmap_clear_reference(pg) (pmap_clear_bit((pg), PTE_REF)) 125 #define pmap_is_modified(pg) (pmap_query_bit((pg), PTE_CHG)) 126 #define pmap_is_referenced(pg) (pmap_query_bit((pg), PTE_REF)) 127 128 #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) 129 #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count) 130 131 /* ARGSUSED */ 132 static __inline bool 133 pmap_remove_all(struct pmap *pmap) 134 { 135 /* Nothing. */ 136 return false; 137 } 138 139 #if (defined(PPC_OEA) + defined(PPC_OEA64) + defined(PPC_OEA64_BRIDGE)) != 1 140 #define PMAP_NEEDS_FIXUP 141 #endif 142 143 extern volatile struct pteg *pmap_pteg_table; 144 extern unsigned int pmap_pteg_cnt; 145 extern unsigned int pmap_pteg_mask; 146 147 void pmap_bootstrap(vaddr_t, vaddr_t); 148 bool pmap_extract(pmap_t, vaddr_t, paddr_t *); 149 bool pmap_query_bit(struct vm_page *, int); 150 bool pmap_clear_bit(struct vm_page *, int); 151 void pmap_real_memory(paddr_t *, psize_t *); 152 void pmap_procwr(struct proc *, vaddr_t, size_t); 153 int pmap_pte_spill(pmap_t, vaddr_t, bool); 154 int pmap_ste_spill(pmap_t, vaddr_t, bool); 155 void pmap_pinit(pmap_t); 156 157 u_int powerpc_mmap_flags(paddr_t); 158 #define POWERPC_MMAP_FLAG_MASK 0xf 159 #define POWERPC_MMAP_FLAG_PREFETCHABLE 0x1 160 #define POWERPC_MMAP_FLAG_CACHEABLE 0x2 161 162 #define pmap_phys_address(ppn) (ppn & ~POWERPC_MMAP_FLAG_MASK) 163 #define pmap_mmap_flags(ppn) powerpc_mmap_flags(ppn) 164 165 static __inline paddr_t vtophys (vaddr_t); 166 167 /* 168 * Alternate mapping hooks for pool pages. Avoids thrashing the TLB. 169 * 170 * Note: This won't work if we have more memory than can be direct-mapped 171 * VA==PA all at once. But pmap_copy_page() and pmap_zero_page() will have 172 * this problem, too. 173 */ 174 #if !defined(PPC_OEA64) && !defined (PPC_OEA64_BRIDGE) 175 #define PMAP_MAP_POOLPAGE(pa) (pa) 176 #define PMAP_UNMAP_POOLPAGE(pa) (pa) 177 #define POOL_VTOPHYS(va) vtophys((vaddr_t) va) 178 #endif 179 180 static __inline paddr_t 181 vtophys(vaddr_t va) 182 { 183 paddr_t pa; 184 185 if (pmap_extract(pmap_kernel(), va, &pa)) 186 return pa; 187 KASSERTMSG(0, "vtophys: pmap_extract of %#"PRIxVADDR" failed", va); 188 return (paddr_t) -1; 189 } 190 191 192 #ifdef PMAP_NEEDS_FIXUP 193 extern const struct pmap_ops *pmapops; 194 extern const struct pmap_ops pmap32_ops; 195 extern const struct pmap_ops pmap64_ops; 196 extern const struct pmap_ops pmap64bridge_ops; 197 198 static __inline void 199 pmap_setup32(void) 200 { 201 pmapops = &pmap32_ops; 202 } 203 204 static __inline void 205 pmap_setup64(void) 206 { 207 pmapops = &pmap64_ops; 208 } 209 210 static __inline void 211 pmap_setup64bridge(void) 212 { 213 pmapops = &pmap64bridge_ops; 214 } 215 #endif 216 217 bool pmap_pageidlezero (paddr_t); 218 void pmap_syncicache (paddr_t, psize_t); 219 #ifdef PPC_OEA64 220 vaddr_t pmap_setusr (vaddr_t); 221 vaddr_t pmap_unsetusr (void); 222 #endif 223 224 #ifdef PPC_OEA64_BRIDGE 225 int pmap_setup_segment0_map(int use_large_pages, ...); 226 #endif 227 228 #define PMAP_MD_PREFETCHABLE 0x2000000 229 #define PMAP_STEAL_MEMORY 230 #define PMAP_NEED_PROCWR 231 232 void pmap_zero_page(paddr_t); 233 void pmap_copy_page(paddr_t, paddr_t); 234 235 LIST_HEAD(pvo_head, pvo_entry); 236 237 #define __HAVE_VM_PAGE_MD 238 239 struct vm_page_md { 240 unsigned int mdpg_attrs; 241 struct pvo_head mdpg_pvoh; 242 #ifdef MODULAR 243 uintptr_t mdpg_dummy[3]; 244 #endif 245 }; 246 247 #define VM_MDPAGE_INIT(pg) do { \ 248 (pg)->mdpage.mdpg_attrs = 0; \ 249 LIST_INIT(&(pg)->mdpage.mdpg_pvoh); \ 250 } while (/*CONSTCOND*/0) 251 252 __END_DECLS 253 #endif /* _KERNEL */ 254 255 #endif /* _POWERPC_OEA_PMAP_H_ */ 256
Indexes created Tue Sep 30 11:09:46 GMT 2025