pte.h (14336B) - Raw
1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 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 * $NetBSD: pte.h,v 1.2 1998/08/31 14:43:40 tsubai Exp $ 34 */ 35 36 #ifndef _MACHINE_PTE_H_ 37 #define _MACHINE_PTE_H_ 38 39 #if defined(AIM) 40 41 /* 42 * Page Table Entries 43 */ 44 #ifndef LOCORE 45 46 /* 32-bit PTE */ 47 struct pte { 48 u_int32_t pte_hi; 49 u_int32_t pte_lo; 50 }; 51 52 struct pteg { 53 struct pte pt[8]; 54 }; 55 56 /* 64-bit (long) PTE */ 57 struct lpte { 58 u_int64_t pte_hi; 59 u_int64_t pte_lo; 60 }; 61 62 struct lpteg { 63 struct lpte pt[8]; 64 }; 65 66 /* Partition table entry */ 67 struct pate { 68 u_int64_t pagetab; 69 u_int64_t proctab; 70 }; 71 72 /* Process table entry */ 73 struct prte { 74 u_int64_t proctab0; 75 u_int64_t proctab1; 76 }; 77 78 typedef struct pte pte_t; 79 typedef struct lpte lpte_t; 80 #endif /* LOCORE */ 81 82 /* 32-bit PTE definitions */ 83 84 /* High word: */ 85 #define PTE_VALID 0x80000000 86 #define PTE_VSID_SHFT 7 87 #define PTE_HID 0x00000040 88 #define PTE_API 0x0000003f 89 /* Low word: */ 90 #define PTE_RPGN 0xfffff000 91 #define PTE_REF 0x00000100 92 #define PTE_CHG 0x00000080 93 #define PTE_WIMG 0x00000078 94 #define PTE_W 0x00000040 95 #define PTE_I 0x00000020 96 #define PTE_M 0x00000010 97 #define PTE_G 0x00000008 98 #define PTE_PP 0x00000003 99 #define PTE_SO 0x00000000 /* Super. Only (U: XX, S: RW) */ 100 #define PTE_SW 0x00000001 /* Super. Write-Only (U: RO, S: RW) */ 101 #define PTE_BW 0x00000002 /* Supervisor (U: RW, S: RW) */ 102 #define PTE_BR 0x00000003 /* Both Read Only (U: RO, S: RO) */ 103 #define PTE_RW PTE_BW 104 #define PTE_RO PTE_BR 105 106 #define PTE_EXEC 0x00000200 /* pseudo bit in attrs; page is exec */ 107 108 /* 64-bit PTE definitions */ 109 110 /* High quadword: */ 111 #define LPTE_VSID_SHIFT 12 112 #define LPTE_AVPN_MASK 0xFFFFFFFFFFFFFF80ULL 113 #define LPTE_AVA_MASK 0x3FFFFFFFFFFFFF80ULL 114 #define LPTE_API 0x0000000000000F80ULL 115 #define LPTE_SWBITS 0x0000000000000078ULL 116 #define LPTE_WIRED 0x0000000000000010ULL 117 #define LPTE_LOCKED 0x0000000000000008ULL 118 #define LPTE_BIG 0x0000000000000004ULL /* 4kb/16Mb page */ 119 #define LPTE_HID 0x0000000000000002ULL 120 #define LPTE_VALID 0x0000000000000001ULL 121 122 /* Low quadword: */ 123 #define LP_4K_16M 0x38 /* 4KB base, 16MB actual page size */ 124 125 #define EXTEND_PTE(x) UINT64_C(x) /* make constants 64-bit */ 126 #define LPTE_RPGN 0xfffffffffffff000ULL 127 #define LPTE_LP_MASK 0x00000000000ff000ULL 128 #define LPTE_LP_SHIFT 12 129 #define LPTE_LP_4K_16M ((unsigned long long)(LP_4K_16M) << LPTE_LP_SHIFT) 130 #define LPTE_REF EXTEND_PTE( PTE_REF ) 131 #define LPTE_CHG EXTEND_PTE( PTE_CHG ) 132 #define LPTE_WIMG EXTEND_PTE( PTE_WIMG ) 133 #define LPTE_W EXTEND_PTE( PTE_W ) 134 #define LPTE_I EXTEND_PTE( PTE_I ) 135 #define LPTE_M EXTEND_PTE( PTE_M ) 136 #define LPTE_G EXTEND_PTE( PTE_G ) 137 #define LPTE_NOEXEC 0x0000000000000004ULL 138 #define LPTE_PP EXTEND_PTE( PTE_PP ) 139 140 #define LPTE_SO EXTEND_PTE( PTE_SO ) /* Super. Only */ 141 #define LPTE_SW EXTEND_PTE( PTE_SW ) /* Super. Write-Only */ 142 #define LPTE_BW EXTEND_PTE( PTE_BW ) /* Supervisor */ 143 #define LPTE_BR EXTEND_PTE( PTE_BR ) /* Both Read Only */ 144 #define LPTE_RW LPTE_BW 145 #define LPTE_RO LPTE_BR 146 147 /* HPT superpage definitions */ 148 #define HPT_SP_SHIFT (VM_LEVEL_0_ORDER + PAGE_SHIFT) 149 #define HPT_SP_SIZE (1 << HPT_SP_SHIFT) 150 #define HPT_SP_MASK (HPT_SP_SIZE - 1) 151 #define HPT_SP_PAGES (1 << VM_LEVEL_0_ORDER) 152 153 /* POWER ISA 3.0 Radix Table Definitions */ 154 #define RPTE_VALID 0x8000000000000000ULL 155 #define RPTE_LEAF 0x4000000000000000ULL /* is a PTE: always 1 */ 156 #define RPTE_SW0 0x2000000000000000ULL 157 #define RPTE_RPN_MASK 0x00FFFFFFFFFFF000ULL 158 #define RPTE_RPN_SHIFT 12 159 #define RPTE_SW1 0x0000000000000800ULL 160 #define RPTE_SW2 0x0000000000000400ULL 161 #define RPTE_SW3 0x0000000000000200ULL 162 #define RPTE_R 0x0000000000000100ULL 163 #define RPTE_C 0x0000000000000080ULL 164 165 #define RPTE_MANAGED RPTE_SW1 166 #define RPTE_WIRED RPTE_SW2 167 #define RPTE_PROMOTED RPTE_SW3 168 169 #define RPTE_ATTR_MASK 0x0000000000000030ULL 170 #define RPTE_ATTR_MEM 0x0000000000000000ULL /* PTE M */ 171 #define RPTE_ATTR_SAO 0x0000000000000010ULL /* PTE WIM */ 172 #define RPTE_ATTR_GUARDEDIO 0x0000000000000020ULL /* PTE IMG */ 173 #define RPTE_ATTR_UNGUARDEDIO 0x0000000000000030ULL /* PTE IM */ 174 175 #define RPTE_EAA_MASK 0x000000000000000FULL 176 #define RPTE_EAA_P 0x0000000000000008ULL /* Supervisor only */ 177 #define RPTE_EAA_R 0x0000000000000004ULL /* Read allowed */ 178 #define RPTE_EAA_W 0x0000000000000002ULL /* Write (+read) */ 179 #define RPTE_EAA_X 0x0000000000000001ULL /* Execute allowed */ 180 181 #define RPDE_VALID RPTE_VALID 182 #define RPDE_LEAF RPTE_LEAF /* is a PTE: always 0 */ 183 #define RPDE_NLB_MASK 0x00FFFFFFFFFFFF00ULL 184 #define RPDE_NLB_SHIFT 8 185 #define RPDE_NLS_MASK 0x000000000000001FULL 186 187 #define PG_FRAME (0x000ffffffffff000ul) 188 #define PG_PS_FRAME (0x000fffffffe00000ul) 189 /* 190 * Extract bits from address 191 */ 192 #define ADDR_SR_SHFT 28 193 #define ADDR_PIDX 0x0ffff000UL 194 #define ADDR_PIDX_SHFT 12 195 #define ADDR_API_SHFT 22 196 #define ADDR_API_SHFT64 16 197 #define ADDR_POFF 0x00000fffUL 198 199 /* 200 * Bits in DSISR: 201 */ 202 #define DSISR_DIRECT 0x80000000 203 #define DSISR_NOTFOUND 0x40000000 204 #define DSISR_PROTECT 0x08000000 205 #define DSISR_INVRX 0x04000000 206 #define DSISR_STORE 0x02000000 207 #define DSISR_DABR 0x00400000 208 #define DSISR_SEGMENT 0x00200000 209 #define DSISR_EAR 0x00100000 210 211 /* 212 * Bits in SRR1 on ISI: 213 */ 214 #define ISSRR1_NOTFOUND 0x40000000 215 #define ISSRR1_DIRECT 0x10000000 216 #define ISSRR1_PROTECT 0x08000000 217 #define ISSRR1_SEGMENT 0x00200000 218 219 #else /* BOOKE */ 220 221 #include <machine/tlb.h> 222 223 /* 224 * Flags for pte_remove() routine. 225 */ 226 #define PTBL_HOLD 0x00000001 /* do not unhold ptbl pages */ 227 #define PTBL_UNHOLD 0x00000002 /* unhold and attempt to free ptbl pages */ 228 229 #define PTBL_HOLD_FLAG(pmap) (((pmap) == kernel_pmap) ? PTBL_HOLD : PTBL_UNHOLD) 230 231 /* 232 * Page Table Entry definitions and macros. 233 * 234 * RPN need only be 32-bit because Book-E has 36-bit addresses, and the smallest 235 * page size is 4k (12-bit mask), so RPN can really fit into 24 bits. 236 */ 237 #ifndef LOCORE 238 typedef uint64_t pte_t; 239 #endif 240 241 /* RPN mask, TLB0 4K pages */ 242 #define PTE_PA_MASK PAGE_MASK 243 244 #if defined(BOOKE_E500) 245 246 /* PTE bits assigned to MAS2, MAS3 flags */ 247 #define PTE_MAS2_SHIFT 19 248 #define PTE_W (MAS2_W << PTE_MAS2_SHIFT) 249 #define PTE_I (MAS2_I << PTE_MAS2_SHIFT) 250 #define PTE_M (MAS2_M << PTE_MAS2_SHIFT) 251 #define PTE_G (MAS2_G << PTE_MAS2_SHIFT) 252 #define PTE_MAS2_MASK (MAS2_G | MAS2_M | MAS2_I | MAS2_W) 253 254 #define PTE_MAS3_SHIFT 2 255 #define PTE_UX (MAS3_UX << PTE_MAS3_SHIFT) 256 #define PTE_SX (MAS3_SX << PTE_MAS3_SHIFT) 257 #define PTE_UW (MAS3_UW << PTE_MAS3_SHIFT) 258 #define PTE_SW (MAS3_SW << PTE_MAS3_SHIFT) 259 #define PTE_UR (MAS3_UR << PTE_MAS3_SHIFT) 260 #define PTE_SR (MAS3_SR << PTE_MAS3_SHIFT) 261 #define PTE_MAS3_MASK ((MAS3_UX | MAS3_SX | MAS3_UW \ 262 | MAS3_SW | MAS3_UR | MAS3_SR) << PTE_MAS3_SHIFT) 263 264 #define PTE_PS_SHIFT 8 265 #define PTE_PS_4KB (2 << PTE_PS_SHIFT) 266 267 #endif 268 269 /* Other PTE flags */ 270 #define PTE_VALID 0x00000001 /* Valid */ 271 #define PTE_MODIFIED 0x00001000 /* Modified */ 272 #define PTE_WIRED 0x00002000 /* Wired */ 273 #define PTE_MANAGED 0x00000002 /* Managed */ 274 #define PTE_REFERENCED 0x00040000 /* Referenced */ 275 276 /* 277 * Page Table Entry definitions and macros. 278 * 279 * We use the hardware page table entry format: 280 * 281 * 63 24 23 19 18 17 14 13 12 11 8 7 6 5 4 3 2 1 0 282 * --------------------------------------------------------------- 283 * ARPN(12:51) WIMGE R U0:U3 SW0 C PSIZE UX SX UW SW UR SR SW1 V 284 * --------------------------------------------------------------- 285 */ 286 287 /* PTE fields. */ 288 #define PTE_TSIZE_SHIFT (63-54) 289 #define PTE_TSIZE_MASK 0x7 290 #define PTE_TSIZE_SHIFT_DIRECT (63-55) 291 #define PTE_TSIZE_MASK_DIRECT 0xf 292 #define PTE_PS_DIRECT(ps) (ps<<PTE_TSIZE_SHIFT_DIRECT) /* Direct Entry Page Size */ 293 #define PTE_PS(ps) (ps<<PTE_TSIZE_SHIFT) /* Page Size */ 294 295 /* Macro argument must of pte_t type. */ 296 #define PTE_TSIZE(pte) (int)((*pte >> PTE_TSIZE_SHIFT) & PTE_TSIZE_MASK) 297 #define PTE_TSIZE_DIRECT(pte) (int)((*pte >> PTE_TSIZE_SHIFT_DIRECT) & PTE_TSIZE_MASK_DIRECT) 298 299 /* Macro argument must of pte_t type. */ 300 #define PTE_ARPN_SHIFT 12 301 #define PTE_FLAGS_MASK 0x00ffffff 302 #define PTE_RPN_FROM_PA(pa) (((pa) & ~PAGE_MASK) << PTE_ARPN_SHIFT) 303 #define PTE_PA(pte) ((vm_paddr_t)(*pte >> PTE_ARPN_SHIFT) & ~PAGE_MASK) 304 #define PTE_ISVALID(pte) ((*pte) & PTE_VALID) 305 #define PTE_ISWIRED(pte) ((*pte) & PTE_WIRED) 306 #define PTE_ISMANAGED(pte) ((*pte) & PTE_MANAGED) 307 #define PTE_ISMODIFIED(pte) ((*pte) & PTE_MODIFIED) 308 #define PTE_ISREFERENCED(pte) ((*pte) & PTE_REFERENCED) 309 310 #endif /* BOOKE */ 311 312 /* Book-E page table format, broken out for the generic pmap.h. */ 313 #ifdef __powerpc64__ 314 315 #include <machine/tlb.h> 316 317 /* 318 * The virtual address is: 319 * 320 * 4K page size 321 * +-----+-----------+-------+-------------+-------------+----------------+ 322 * | - | pg_root |pdir_l1| dir# | pte# | off in 4K page | 323 * +-----+-----------+-------+-------------+-------------+----------------+ 324 * 63 52 51 39 38 30 29 ^ 21 20 ^ 12 11 0 325 * | | 326 * index in 1 page of pointers 327 * 328 * 1st level - Root page table 329 * 330 * pp2d consists of PG_ROOT_NENTRIES entries, each being a pointer to 331 * second level entity, i.e. the page table directory (pdir). 332 */ 333 #define PG_ROOT_H 51 334 #define PG_ROOT_L 39 335 #define PG_ROOT_SIZE (1UL << PG_ROOT_L) /* va range mapped by pp2d */ 336 #define PG_ROOT_SHIFT PG_ROOT_L 337 #define PG_ROOT_NUM (PG_ROOT_H - PG_ROOT_L + 1) 338 #define PG_ROOT_MASK ((1 << PG_ROOT_NUM) - 1) 339 #define PG_ROOT_IDX(va) ((va >> PG_ROOT_SHIFT) & PG_ROOT_MASK) 340 #define PG_ROOT_NENTRIES (1 << PG_ROOT_NUM) 341 #define PG_ROOT_ENTRY_SHIFT 3 /* log2 (sizeof(struct pte_entry **)) */ 342 343 /* 344 * 2nd level - page directory directory (pdir l1) 345 * 346 * pdir consists of PDIR_NENTRIES entries, each being a pointer to 347 * second level entity, i.e. the actual page table (ptbl). 348 */ 349 #define PDIR_L1_H (PG_ROOT_L-1) 350 #define PDIR_L1_L 30 351 #define PDIR_L1_NUM (PDIR_L1_H-PDIR_L1_L+1) 352 #define PDIR_L1_SIZE (1 << PDIR_L1_L) /* va range mapped by pdir */ 353 #define PDIR_L1_MASK ((1<<PDIR_L1_NUM)-1) 354 #define PDIR_L1_SHIFT PDIR_L1_L 355 #define PDIR_L1_NENTRIES (1<<PDIR_L1_NUM) 356 #define PDIR_L1_IDX(va) (((va) >> PDIR_L1_SHIFT) & PDIR_L1_MASK) 357 #define PDIR_L1_ENTRY_SHIFT 3 /* log2 (sizeof(struct pte_entry *)) */ 358 #define PDIR_L1_PAGES ((PDIR_L1_NENTRIES * (1<<PDIR_L1_ENTRY_SHIFT)) / PAGE_SIZE) 359 360 /* 361 * 3rd level - page table directory (pdir) 362 * 363 * pdir consists of PDIR_NENTRIES entries, each being a pointer to 364 * second level entity, i.e. the actual page table (ptbl). 365 */ 366 #define PDIR_H (PDIR_L1_L-1) 367 #define PDIR_L 21 368 #define PDIR_NUM (PDIR_H-PDIR_L+1) 369 #define PDIR_SIZE (1 << PDIR_L) /* va range mapped by pdir */ 370 #define PDIR_MASK ((1<<PDIR_NUM)-1) 371 #define PDIR_SHIFT PDIR_L 372 #define PDIR_NENTRIES (1<<PDIR_NUM) 373 #define PDIR_IDX(va) (((va) >> PDIR_SHIFT) & PDIR_MASK) 374 #define PDIR_ENTRY_SHIFT 3 /* log2 (sizeof(struct pte_entry *)) */ 375 #define PDIR_PAGES ((PDIR_NENTRIES * (1<<PDIR_ENTRY_SHIFT)) / PAGE_SIZE) 376 377 /* 378 * 4th level - page table (ptbl) 379 * 380 * Page table covers PTBL_NENTRIES page table entries. Page 381 * table entry (pte) is 64 bit wide and defines mapping 382 * for a single page. 383 */ 384 #define PTBL_H (PDIR_L-1) 385 #define PTBL_L PAGE_SHIFT 386 #define PTBL_NUM (PTBL_H-PTBL_L+1) 387 #define PTBL_MASK ((1<<PTBL_NUM)-1) 388 #define PTBL_SHIFT PTBL_L 389 #define PTBL_SIZE PAGE_SIZE /* va range mapped by ptbl entry */ 390 #define PTBL_NENTRIES (1<<PTBL_NUM) 391 #define PTBL_IDX(va) ((va >> PTBL_SHIFT) & PTBL_MASK) 392 #define PTBL_ENTRY_SHIFT 3 /* log2 (sizeof (struct pte_entry)) */ 393 #define PTBL_PAGES ((PTBL_NENTRIES * (1<<PTBL_ENTRY_SHIFT)) / PAGE_SIZE) 394 395 #else 396 /* 397 * 1st level - page table directory (pdir) 398 * 399 * pdir consists of 1024 entries, each being a pointer to 400 * second level entity, i.e. the actual page table (ptbl). 401 */ 402 #define PDIR_SHIFT 22 403 #define PDIR_SIZE (1 << PDIR_SHIFT) /* va range mapped by pdir */ 404 #define PDIR_MASK (~(PDIR_SIZE - 1)) 405 #define PDIR_NENTRIES 1024 /* number of page tables in pdir */ 406 407 /* Returns pdir entry number for given va */ 408 #define PDIR_IDX(va) ((va) >> PDIR_SHIFT) 409 410 #define PDIR_ENTRY_SHIFT 2 /* entry size is 2^2 = 4 bytes */ 411 412 /* 413 * 2nd level - page table (ptbl) 414 * 415 * Page table covers 1024 page table entries. Page 416 * table entry (pte) is 32 bit wide and defines mapping 417 * for a single page. 418 */ 419 #define PTBL_SHIFT PAGE_SHIFT 420 #define PTBL_SIZE PAGE_SIZE /* va range mapped by ptbl entry */ 421 #define PTBL_MASK ((PDIR_SIZE - 1) & ~((1 << PAGE_SHIFT) - 1)) 422 #define PTBL_NENTRIES 1024 /* number of pages mapped by ptbl */ 423 424 /* Returns ptbl entry number for given va */ 425 #define PTBL_IDX(va) (((va) & PTBL_MASK) >> PTBL_SHIFT) 426 427 /* Size of ptbl in pages, 1024 entries, each sizeof(struct pte_entry). */ 428 #define PTBL_PAGES 2 429 #define PTBL_ENTRY_SHIFT 3 /* entry size is 2^3 = 8 bytes */ 430 431 #endif 432 #endif /* _MACHINE_PTE_H_ */