sys/arch/powerpc/include/oea/pmap.h

   1 /*      $NetBSD: pmap.h,v 1.17 2009/10/21 21:12:01 rmind 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_NC                 0x1000
 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 __END_DECLS
 257 #endif  /* _KERNEL */
 258 #endif  /* _LOCORE */
 259
 260 #endif  /* _POWERPC_OEA_PMAP_H_ */