pmap.h revision 1.2.4.3
1 1.2.4.3 nathanw /* $NetBSD: pmap.h,v 1.2.4.3 2002/10/18 02:39:31 nathanw Exp $ */ 2 1.2.4.2 nathanw 3 1.2.4.2 nathanw /* 4 1.2.4.2 nathanw * Copyright 2001 Wasabi Systems, Inc. 5 1.2.4.2 nathanw * All rights reserved. 6 1.2.4.2 nathanw * 7 1.2.4.2 nathanw * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc. 8 1.2.4.2 nathanw * 9 1.2.4.2 nathanw * Redistribution and use in source and binary forms, with or without 10 1.2.4.2 nathanw * modification, are permitted provided that the following conditions 11 1.2.4.2 nathanw * are met: 12 1.2.4.2 nathanw * 1. Redistributions of source code must retain the above copyright 13 1.2.4.2 nathanw * notice, this list of conditions and the following disclaimer. 14 1.2.4.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 15 1.2.4.2 nathanw * notice, this list of conditions and the following disclaimer in the 16 1.2.4.2 nathanw * documentation and/or other materials provided with the distribution. 17 1.2.4.2 nathanw * 3. All advertising materials mentioning features or use of this software 18 1.2.4.2 nathanw * must display the following acknowledgement: 19 1.2.4.2 nathanw * This product includes software developed for the NetBSD Project by 20 1.2.4.2 nathanw * Wasabi Systems, Inc. 21 1.2.4.2 nathanw * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 1.2.4.2 nathanw * or promote products derived from this software without specific prior 23 1.2.4.2 nathanw * written permission. 24 1.2.4.2 nathanw * 25 1.2.4.2 nathanw * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 1.2.4.2 nathanw * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.2.4.2 nathanw * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.2.4.2 nathanw * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 1.2.4.2 nathanw * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.2.4.2 nathanw * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.2.4.2 nathanw * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.2.4.2 nathanw * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.2.4.2 nathanw * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.2.4.2 nathanw * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.2.4.2 nathanw * POSSIBILITY OF SUCH DAMAGE. 36 1.2.4.2 nathanw */ 37 1.2.4.2 nathanw 38 1.2.4.2 nathanw /*- 39 1.2.4.2 nathanw * Copyright (C) 1995, 1996 Wolfgang Solfrank. 40 1.2.4.2 nathanw * Copyright (C) 1995, 1996 TooLs GmbH. 41 1.2.4.2 nathanw * All rights reserved. 42 1.2.4.2 nathanw * 43 1.2.4.2 nathanw * Redistribution and use in source and binary forms, with or without 44 1.2.4.2 nathanw * modification, are permitted provided that the following conditions 45 1.2.4.2 nathanw * are met: 46 1.2.4.2 nathanw * 1. Redistributions of source code must retain the above copyright 47 1.2.4.2 nathanw * notice, this list of conditions and the following disclaimer. 48 1.2.4.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 49 1.2.4.2 nathanw * notice, this list of conditions and the following disclaimer in the 50 1.2.4.2 nathanw * documentation and/or other materials provided with the distribution. 51 1.2.4.2 nathanw * 3. All advertising materials mentioning features or use of this software 52 1.2.4.2 nathanw * must display the following acknowledgement: 53 1.2.4.2 nathanw * This product includes software developed by TooLs GmbH. 54 1.2.4.2 nathanw * 4. The name of TooLs GmbH may not be used to endorse or promote products 55 1.2.4.2 nathanw * derived from this software without specific prior written permission. 56 1.2.4.2 nathanw * 57 1.2.4.2 nathanw * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 58 1.2.4.2 nathanw * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 1.2.4.2 nathanw * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 1.2.4.2 nathanw * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 61 1.2.4.2 nathanw * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 62 1.2.4.2 nathanw * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 63 1.2.4.2 nathanw * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 64 1.2.4.2 nathanw * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 65 1.2.4.2 nathanw * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 66 1.2.4.2 nathanw * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 1.2.4.2 nathanw */ 68 1.2.4.2 nathanw 69 1.2.4.2 nathanw #ifndef _IBM4XX_PMAP_H_ 70 1.2.4.2 nathanw #define _IBM4XX_PMAP_H_ 71 1.2.4.2 nathanw 72 1.2.4.2 nathanw #include <powerpc/ibm4xx/pte.h> 73 1.2.4.2 nathanw #include <powerpc/ibm4xx/tlb.h> 74 1.2.4.2 nathanw 75 1.2.4.2 nathanw #define KERNEL_PID 1 /* TLB PID to use for kernel translation */ 76 1.2.4.2 nathanw 77 1.2.4.2 nathanw /* 78 1.2.4.2 nathanw * A TTE is a 16KB or greater TLB entry w/size and endiannes bits 79 1.2.4.2 nathanw * stuffed in the (unused) low bits of the PA. 80 1.2.4.2 nathanw */ 81 1.2.4.2 nathanw #define TTE_PA_MASK 0xffffc000 82 1.2.4.2 nathanw #define TTE_RPN_MASK(sz) (~((1 << (10 + 2 * (sz))) - 1)) 83 1.2.4.2 nathanw #define TTE_ENDIAN 0x00002000 84 1.2.4.2 nathanw #define TTE_SZ_MASK 0x00001c00 85 1.2.4.2 nathanw #define TTE_SZ_SHIFT 10 86 1.2.4.2 nathanw 87 1.2.4.2 nathanw /* TTE_SZ_1K and TTE_SZ_4K are not allowed. */ 88 1.2.4.2 nathanw #define TTE_SZ_16K (TLB_SIZE_16K << TTE_SZ_SHIFT) 89 1.2.4.2 nathanw #define TTE_SZ_64K (TLB_SIZE_64K << TTE_SZ_SHIFT) 90 1.2.4.2 nathanw #define TTE_SZ_256K (TLB_SIZE_256K << TTE_SZ_SHIFT) 91 1.2.4.2 nathanw #define TTE_SZ_1M (TLB_SIZE_1M << TTE_SZ_SHIFT) 92 1.2.4.2 nathanw #define TTE_SZ_4M (TLB_SIZE_4M << TTE_SZ_SHIFT) 93 1.2.4.2 nathanw #define TTE_SZ_16M (TLB_SIZE_16M << TTE_SZ_SHIFT) 94 1.2.4.2 nathanw 95 1.2.4.2 nathanw #define TTE_EX TLB_EX 96 1.2.4.2 nathanw #define TTE_WR TLB_WR 97 1.2.4.2 nathanw #define TTE_ZSEL_MASK TLB_ZSEL_MASK 98 1.2.4.2 nathanw #define TTE_ZSEL_SHFT TLB_ZSEL_SHFT 99 1.2.4.2 nathanw #define TTE_W TLB_W 100 1.2.4.2 nathanw #define TTE_I TLB_I 101 1.2.4.2 nathanw #define TTE_M TLB_M 102 1.2.4.2 nathanw #define TTE_G TLB_G 103 1.2.4.2 nathanw 104 1.2.4.2 nathanw #define ZONE_PRIV 0 105 1.2.4.2 nathanw #define ZONE_USER 1 106 1.2.4.2 nathanw 107 1.2.4.2 nathanw #define TTE_PA(p) ((p)&TTE_PA_MASK) 108 1.2.4.2 nathanw #define TTE_ZONE(z) TLB_ZONE(z) 109 1.2.4.2 nathanw 110 1.2.4.2 nathanw #define MKTTE(pa,sz,zn,e,fl) (((pa)&TTE_PA_MASK)|((sz)&TTE_SZ_MASK)|\ 111 1.2.4.2 nathanw (TTE_ZONE(zn))|(fl)|((e)?TTE_ENDIAN:0) 112 1.2.4.2 nathanw 113 1.2.4.2 nathanw /* 114 1.2.4.2 nathanw * Definitions for sizes of 1st and 2nd level page tables. 115 1.2.4.2 nathanw * 116 1.2.4.2 nathanw */ 117 1.2.4.2 nathanw #define PTSZ (NBPG / 4) 118 1.2.4.2 nathanw #define PTMAP (PTSZ * NBPG) 119 1.2.4.2 nathanw #define PTMSK ((PTMAP - 1) & ~(PGOFSET)) 120 1.2.4.2 nathanw 121 1.2.4.2 nathanw #define PTIDX(v) (((v) & PTMSK) >> PGSHIFT) 122 1.2.4.2 nathanw 123 1.2.4.2 nathanw /* 2nd level tables map in any bits not mapped by 1st level tables. */ 124 1.2.4.2 nathanw #define STSZ ((0xffffffffU / (NBPG * PTSZ)) + 1) 125 1.2.4.2 nathanw #define STMAP (0xffffffffU) 126 1.2.4.2 nathanw #define STMSK (~(PTMAP - 1)) 127 1.2.4.2 nathanw 128 1.2.4.2 nathanw #define STIDX(v) ((v) >> (PGSHIFT + 12)) 129 1.2.4.2 nathanw 130 1.2.4.2 nathanw 131 1.2.4.2 nathanw /* 132 1.2.4.2 nathanw * Extra flags to pass to pmap_enter() -- make sure they don't conflict 133 1.2.4.2 nathanw * w/PMAP_CANFAIL or PMAP_WIRED 134 1.2.4.2 nathanw */ 135 1.2.4.2 nathanw #define PME_NOCACHE 0x100 136 1.2.4.2 nathanw #define PME_WRITETHROUG 0x200 137 1.2.4.2 nathanw 138 1.2.4.2 nathanw #ifndef _LOCORE 139 1.2.4.2 nathanw 140 1.2.4.2 nathanw /* 141 1.2.4.2 nathanw * Pmap stuff 142 1.2.4.2 nathanw */ 143 1.2.4.2 nathanw struct pmap { 144 1.2.4.2 nathanw volatile tlbpid_t pm_ctx; /* PID to identify PMAP's entries in TLB */ 145 1.2.4.2 nathanw int pm_refs; /* ref count */ 146 1.2.4.2 nathanw struct pmap_statistics pm_stats; /* pmap statistics */ 147 1.2.4.2 nathanw volatile u_int *pm_ptbl[STSZ]; /* Array of 64 pointers to page tables. */ 148 1.2.4.2 nathanw }; 149 1.2.4.2 nathanw 150 1.2.4.2 nathanw typedef struct pmap *pmap_t; 151 1.2.4.2 nathanw 152 1.2.4.2 nathanw #ifdef _KERNEL 153 1.2.4.2 nathanw #define PMAP_GROWKERNEL 154 1.2.4.2 nathanw extern struct pmap kernel_pmap_; 155 1.2.4.2 nathanw #define pmap_kernel() (&kernel_pmap_) 156 1.2.4.2 nathanw 157 1.2.4.2 nathanw #define pmap_clear_modify(pg) (check_attr((pg), PTE_HI_CHG, 1)) 158 1.2.4.2 nathanw #define pmap_clear_reference(pg) (check_attr((pg), PTE_HI_REF, 1)) 159 1.2.4.2 nathanw #define pmap_is_modified(pg) (check_attr((pg), PTE_HI_CHG, 0)) 160 1.2.4.2 nathanw #define pmap_is_referenced(pg) (check_attr((pg), PTE_HI_REF, 0)) 161 1.2.4.2 nathanw 162 1.2.4.2 nathanw #define pmap_phys_address(x) (x) 163 1.2.4.2 nathanw 164 1.2.4.2 nathanw #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) 165 1.2.4.2 nathanw 166 1.2.4.2 nathanw void pmap_unwire(struct pmap *pm, vaddr_t va); 167 1.2.4.2 nathanw void pmap_bootstrap(u_int kernelstart, u_int kernelend); 168 1.2.4.2 nathanw boolean_t pmap_extract(struct pmap *, vaddr_t, paddr_t *); 169 1.2.4.2 nathanw boolean_t check_attr(struct vm_page *, u_int, int); 170 1.2.4.2 nathanw int ptereadonly(struct vm_page *); 171 1.2.4.2 nathanw void pmap_real_memory(paddr_t *, psize_t *); 172 1.2.4.2 nathanw int pmap_tlbmiss(vaddr_t va, int ctx); 173 1.2.4.2 nathanw 174 1.2.4.3 nathanw static __inline void 175 1.2.4.3 nathanw pmap_remove_all(struct pmap *pmap) 176 1.2.4.3 nathanw { 177 1.2.4.3 nathanw /* Nothing. */ 178 1.2.4.3 nathanw } 179 1.2.4.3 nathanw 180 1.2.4.2 nathanw int ctx_alloc(struct pmap*); 181 1.2.4.2 nathanw void ctx_free(struct pmap*); 182 1.2.4.2 nathanw 183 1.2.4.2 nathanw #define PMAP_NEED_PROCWR 184 1.2.4.2 nathanw void pmap_procwr(struct proc *, vaddr_t, size_t); 185 1.2.4.2 nathanw 186 1.2.4.2 nathanw /* 187 1.2.4.2 nathanw * Alternate mapping hooks for pool pages. Avoids thrashing the TLB. 188 1.2.4.2 nathanw * 189 1.2.4.2 nathanw * Note: This won't work if we have more memory than can be direct-mapped 190 1.2.4.2 nathanw * VA==PA all at once. But pmap_copy_page() and pmap_zero_page() will have 191 1.2.4.2 nathanw * this problem, too. 192 1.2.4.2 nathanw */ 193 1.2.4.2 nathanw #define PMAP_MAP_POOLPAGE(pa) (pa) 194 1.2.4.2 nathanw #define PMAP_UNMAP_POOLPAGE(pa) (pa) 195 1.2.4.2 nathanw 196 1.2.4.2 nathanw static __inline paddr_t vtophys(vaddr_t); 197 1.2.4.2 nathanw 198 1.2.4.2 nathanw static __inline paddr_t 199 1.2.4.2 nathanw vtophys(vaddr_t va) 200 1.2.4.2 nathanw { 201 1.2.4.2 nathanw paddr_t pa; 202 1.2.4.2 nathanw 203 1.2.4.2 nathanw /* XXX should check battable */ 204 1.2.4.2 nathanw 205 1.2.4.2 nathanw if (pmap_extract(pmap_kernel(), va, &pa)) 206 1.2.4.2 nathanw return pa; 207 1.2.4.2 nathanw return va; 208 1.2.4.2 nathanw } 209 1.2.4.2 nathanw #endif /* _KERNEL */ 210 1.2.4.2 nathanw #endif /* _LOCORE */ 211 1.2.4.2 nathanw #endif /* _IBM4XX_PMAP_H_ */ 212
Indexes created Mon Oct 20 20:10:13 GMT 2025