1 /*- 2 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 3 * Copyright (C) 1995, 1996 TooLs GmbH. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by TooLs GmbH. 17 * 4. The name of TooLs GmbH may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $NetBSD: pte.h,v 1.2 1998/08/31 14:43:40 tsubai Exp $ 32 * $FreeBSD$ 33 */ 34 35 #ifndef _MACHINE_PTE_H_ 36 #define _MACHINE_PTE_H_ 37 38 #if defined(AIM) 39 40 /* 41 * Page Table Entries 42 */ 43 #ifndef LOCORE 44 45 /* 32-bit PTE */ 46 struct pte { 47 u_int32_t pte_hi; 48 u_int32_t pte_lo; 49 }; 50 51 struct pteg { 52 struct pte pt[8]; 53 }; 54 55 /* 64-bit (long) PTE */ 56 struct lpte { 57 u_int64_t pte_hi; 58 u_int64_t pte_lo; 59 }; 60 61 struct lpteg { 62 struct lpte pt[8]; 63 }; 64 65 #endif /* LOCORE */ 66 67 /* 32-bit PTE definitions */ 68 69 /* High word: */ 70 #define PTE_VALID 0x80000000 71 #define PTE_VSID_SHFT 7 72 #define PTE_HID 0x00000040 73 #define PTE_API 0x0000003f 74 /* Low word: */ 75 #define PTE_RPGN 0xfffff000 76 #define PTE_REF 0x00000100 77 #define PTE_CHG 0x00000080 78 #define PTE_WIMG 0x00000078 79 #define PTE_W 0x00000040 80 #define PTE_I 0x00000020 81 #define PTE_M 0x00000010 82 #define PTE_G 0x00000008 83 #define PTE_PP 0x00000003 84 #define PTE_SO 0x00000000 /* Super. Only (U: XX, S: RW) */ 85 #define PTE_SW 0x00000001 /* Super. Write-Only (U: RO, S: RW) */ 86 #define PTE_BW 0x00000002 /* Supervisor (U: RW, S: RW) */ 87 #define PTE_BR 0x00000003 /* Both Read Only (U: RO, S: RO) */ 88 #define PTE_RW PTE_BW 89 #define PTE_RO PTE_BR 90 91 #define PTE_EXEC 0x00000200 /* pseudo bit in attrs; page is exec */ 92 93 /* 64-bit PTE definitions */ 94 95 /* High quadword: */ 96 #define LPTE_VSID_SHIFT 12 97 #define LPTE_AVPN_MASK 0xFFFFFFFFFFFFFF80ULL 98 #define LPTE_API 0x0000000000000F80ULL 99 #define LPTE_LOCKED 0x0000000000000040ULL 100 #define LPTE_WIRED 0x0000000000000008ULL 101 #define LPTE_BIG 0x0000000000000004ULL /* 4kb/16Mb page */ 102 #define LPTE_HID 0x0000000000000002ULL 103 #define LPTE_VALID 0x0000000000000001ULL 104 105 /* Low quadword: */ 106 #define EXTEND_PTE(x) UINT64_C(x) /* make constants 64-bit */ 107 #define LPTE_RPGN 0xfffffffffffff000ULL 108 #define LPTE_REF EXTEND_PTE( PTE_REF ) 109 #define LPTE_CHG EXTEND_PTE( PTE_CHG ) 110 #define LPTE_WIMG EXTEND_PTE( PTE_WIMG ) 111 #define LPTE_W EXTEND_PTE( PTE_W ) 112 #define LPTE_I EXTEND_PTE( PTE_I ) 113 #define LPTE_M EXTEND_PTE( PTE_M ) 114 #define LPTE_G EXTEND_PTE( PTE_G ) 115 #define LPTE_NOEXEC 0x0000000000000004ULL 116 #define LPTE_PP EXTEND_PTE( PTE_PP ) 117 118 #define LPTE_SO EXTEND_PTE( PTE_SO ) /* Super. Only */ 119 #define LPTE_SW EXTEND_PTE( PTE_SW ) /* Super. Write-Only */ 120 #define LPTE_BW EXTEND_PTE( PTE_BW ) /* Supervisor */ 121 #define LPTE_BR EXTEND_PTE( PTE_BR ) /* Both Read Only */ 122 #define LPTE_RW LPTE_BW 123 #define LPTE_RO LPTE_BR 124 125 #ifndef LOCORE 126 typedef struct pte pte_t; 127 typedef struct lpte lpte_t; 128 #endif /* LOCORE */ 129 130 /* 131 * Extract bits from address 132 */ 133 #define ADDR_SR_SHFT 28 134 #define ADDR_PIDX 0x0ffff000UL 135 #define ADDR_PIDX_SHFT 12 136 #define ADDR_API_SHFT 22 137 #define ADDR_API_SHFT64 16 138 #define ADDR_POFF 0x00000fffUL 139 140 /* 141 * Bits in DSISR: 142 */ 143 #define DSISR_DIRECT 0x80000000 144 #define DSISR_NOTFOUND 0x40000000 145 #define DSISR_PROTECT 0x08000000 146 #define DSISR_INVRX 0x04000000 147 #define DSISR_STORE 0x02000000 148 #define DSISR_DABR 0x00400000 149 #define DSISR_SEGMENT 0x00200000 150 #define DSISR_EAR 0x00100000 151 152 /* 153 * Bits in SRR1 on ISI: 154 */ 155 #define ISSRR1_NOTFOUND 0x40000000 156 #define ISSRR1_DIRECT 0x10000000 157 #define ISSRR1_PROTECT 0x08000000 158 #define ISSRR1_SEGMENT 0x00200000 159 160 #ifdef _KERNEL 161 #ifndef LOCORE 162 extern u_int dsisr(void); 163 #endif /* _KERNEL */ 164 #endif /* LOCORE */ 165 166 #else 167 168 #include <machine/tlb.h> 169 170 /* 171 * 1st level - page table directory (pdir) 172 * 173 * pdir consists of 1024 entries, each being a pointer to 174 * second level entity, i.e. the actual page table (ptbl). 175 */ 176 #define PDIR_SHIFT 22 177 #define PDIR_SIZE (1 << PDIR_SHIFT) /* va range mapped by pdir */ 178 #define PDIR_MASK (~(PDIR_SIZE - 1)) 179 #define PDIR_NENTRIES 1024 /* number of page tables in pdir */ 180 181 /* Returns pdir entry number for given va */ 182 #define PDIR_IDX(va) ((va) >> PDIR_SHIFT) 183 184 #define PDIR_ENTRY_SHIFT 2 /* entry size is 2^2 = 4 bytes */ 185 186 /* 187 * 2nd level - page table (ptbl) 188 * 189 * Page table covers 1024 page table entries. Page 190 * table entry (pte) is 32 bit wide and defines mapping 191 * for a single page. 192 */ 193 #define PTBL_SHIFT PAGE_SHIFT 194 #define PTBL_SIZE PAGE_SIZE /* va range mapped by ptbl entry */ 195 #define PTBL_MASK ((PDIR_SIZE - 1) & ~((1 << PAGE_SHIFT) - 1)) 196 #define PTBL_NENTRIES 1024 /* number of pages mapped by ptbl */ 197 198 /* Returns ptbl entry number for given va */ 199 #define PTBL_IDX(va) (((va) & PTBL_MASK) >> PTBL_SHIFT) 200 201 /* Size of ptbl in pages, 1024 entries, each sizeof(struct pte_entry). */ 202 #define PTBL_PAGES 2 203 #define PTBL_ENTRY_SHIFT 3 /* entry size is 2^3 = 8 bytes */ 204 205 /* 206 * Flags for pte_remove() routine. 207 */ 208 #define PTBL_HOLD 0x00000001 /* do not unhold ptbl pages */ 209 #define PTBL_UNHOLD 0x00000002 /* unhold and attempt to free ptbl pages */ 210 211 #define PTBL_HOLD_FLAG(pmap) (((pmap) == kernel_pmap) ? PTBL_HOLD : PTBL_UNHOLD) 212 213 /* 214 * Page Table Entry definitions and macros. 215 */ 216 #ifndef LOCORE 217 struct pte { 218 vm_offset_t rpn; 219 uint32_t flags; 220 }; 221 typedef struct pte pte_t; 222 #endif 223 224 /* RPN mask, TLB0 4K pages */ 225 #define PTE_PA_MASK PAGE_MASK 226 227 /* PTE bits assigned to MAS2, MAS3 flags */ 228 #define PTE_W MAS2_W 229 #define PTE_I MAS2_I 230 #define PTE_M MAS2_M 231 #define PTE_G MAS2_G 232 #define PTE_MAS2_MASK (MAS2_G | MAS2_M | MAS2_I | MAS2_W) 233 234 #define PTE_MAS3_SHIFT 8 235 #define PTE_UX (MAS3_UX << PTE_MAS3_SHIFT) 236 #define PTE_SX (MAS3_SX << PTE_MAS3_SHIFT) 237 #define PTE_UW (MAS3_UW << PTE_MAS3_SHIFT) 238 #define PTE_SW (MAS3_SW << PTE_MAS3_SHIFT) 239 #define PTE_UR (MAS3_UR << PTE_MAS3_SHIFT) 240 #define PTE_SR (MAS3_SR << PTE_MAS3_SHIFT) 241 #define PTE_MAS3_MASK ((MAS3_UX | MAS3_SX | MAS3_UW \ 242 | MAS3_SW | MAS3_UR | MAS3_SR) << PTE_MAS3_SHIFT) 243 244 /* Other PTE flags */ 245 #define PTE_VALID 0x80000000 /* Valid */ 246 #define PTE_MODIFIED 0x40000000 /* Modified */ 247 #define PTE_WIRED 0x20000000 /* Wired */ 248 #define PTE_MANAGED 0x10000000 /* Managed */ 249 #define PTE_REFERENCED 0x04000000 /* Referenced */ 250 251 /* Macro argument must of pte_t type. */ 252 #define PTE_PA(pte) ((pte)->rpn & ~PTE_PA_MASK) 253 #define PTE_ISVALID(pte) ((pte)->flags & PTE_VALID) 254 #define PTE_ISWIRED(pte) ((pte)->flags & PTE_WIRED) 255 #define PTE_ISMANAGED(pte) ((pte)->flags & PTE_MANAGED) 256 #define PTE_ISMODIFIED(pte) ((pte)->flags & PTE_MODIFIED) 257 #define PTE_ISREFERENCED(pte) ((pte)->flags & PTE_REFERENCED) 258 259 #endif /* #elif defined(E500) */ 260 261 #endif /* _MACHINE_PTE_H_ */ 262