pmap.h revision 1.135
1 /* $NetBSD: pmap.h,v 1.135 2014/07/31 08:04:57 skrll Exp $ */ 2 3 /* 4 * Copyright (c) 2002, 2003 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe & Steve C. Woodford for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Copyright (c) 1994,1995 Mark Brinicombe. 40 * All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by Mark Brinicombe 53 * 4. The name of the author may not be used to endorse or promote products 54 * derived from this software without specific prior written permission. 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 57 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 58 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 59 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 60 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 61 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 62 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 63 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 64 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 65 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 #ifndef _ARM32_PMAP_H_ 69 #define _ARM32_PMAP_H_ 70 71 #ifdef _KERNEL 72 73 #include <arm/cpuconf.h> 74 #include <arm/arm32/pte.h> 75 #ifndef _LOCORE 76 #if defined(_KERNEL_OPT) 77 #include "opt_arm32_pmap.h" 78 #endif 79 #include <arm/cpufunc.h> 80 #include <uvm/uvm_object.h> 81 #endif 82 83 #ifdef ARM_MMU_EXTENDED 84 #define PMAP_TLB_MAX 1 85 #define PMAP_TLB_HWPAGEWALKER 1 86 #if PMAP_TLB_MAX > 1 87 #define PMAP_NEED_TLB_SHOOTDOWN 1 88 #endif 89 #define PMAP_TLB_FLUSH_ASID_ON_RESET (arm_has_tlbiasid_p) 90 #define PMAP_TLB_NUM_PIDS 256 91 #define cpu_set_tlb_info(ci, ti) ((void)((ci)->ci_tlb_info = (ti))) 92 #if PMAP_TLB_MAX > 1 93 #define cpu_tlb_info(ci) ((ci)->ci_tlb_info) 94 #else 95 #define cpu_tlb_info(ci) (&pmap_tlb0_info) 96 #endif 97 #define pmap_md_tlb_asid_max() (PMAP_TLB_NUM_PIDS - 1) 98 #include <uvm/pmap/tlb.h> 99 #include <uvm/pmap/pmap_tlb.h> 100 101 /* 102 * If we have an EXTENDED MMU and the address space is split evenly between 103 * user and kernel, we can use the TTBR0/TTBR1 to have separate L1 tables for 104 * user and kernel address spaces. 105 */ 106 #if (KERNEL_BASE & 0x80000000) == 0 107 #error ARMv6 or later systems must have a KERNEL_BASE >= 0x80000000 108 #endif 109 #endif /* ARM_MMU_EXTENDED */ 110 111 /* 112 * a pmap describes a processes' 4GB virtual address space. this 113 * virtual address space can be broken up into 4096 1MB regions which 114 * are described by L1 PTEs in the L1 table. 115 * 116 * There is a line drawn at KERNEL_BASE. Everything below that line 117 * changes when the VM context is switched. Everything above that line 118 * is the same no matter which VM context is running. This is achieved 119 * by making the L1 PTEs for those slots above KERNEL_BASE reference 120 * kernel L2 tables. 121 * 122 * The basic layout of the virtual address space thus looks like this: 123 * 124 * 0xffffffff 125 * . 126 * . 127 * . 128 * KERNEL_BASE 129 * -------------------- 130 * . 131 * . 132 * . 133 * 0x00000000 134 */ 135 136 /* 137 * The number of L2 descriptor tables which can be tracked by an l2_dtable. 138 * A bucket size of 16 provides for 16MB of contiguous virtual address 139 * space per l2_dtable. Most processes will, therefore, require only two or 140 * three of these to map their whole working set. 141 */ 142 #define L2_BUCKET_XLOG2 (L1_S_SHIFT) 143 #define L2_BUCKET_XSIZE (1 << L2_BUCKET_XLOG2) 144 #define L2_BUCKET_LOG2 4 145 #define L2_BUCKET_SIZE (1 << L2_BUCKET_LOG2) 146 147 /* 148 * Given the above "L2-descriptors-per-l2_dtable" constant, the number 149 * of l2_dtable structures required to track all possible page descriptors 150 * mappable by an L1 translation table is given by the following constants: 151 */ 152 #define L2_LOG2 (32 - (L2_BUCKET_XLOG2 + L2_BUCKET_LOG2)) 153 #define L2_SIZE (1 << L2_LOG2) 154 155 /* 156 * tell MI code that the cache is virtually-indexed. 157 * ARMv6 is physically-tagged but all others are virtually-tagged. 158 */ 159 #if (ARM_MMU_V6 + ARM_MMU_V7) > 0 160 #define PMAP_CACHE_VIPT 161 #else 162 #define PMAP_CACHE_VIVT 163 #endif 164 165 #ifndef _LOCORE 166 167 #ifndef PMAP_MMU_EXTENDED 168 struct l1_ttable; 169 struct l2_dtable; 170 171 /* 172 * Track cache/tlb occupancy using the following structure 173 */ 174 union pmap_cache_state { 175 struct { 176 union { 177 uint8_t csu_cache_b[2]; 178 uint16_t csu_cache; 179 } cs_cache_u; 180 181 union { 182 uint8_t csu_tlb_b[2]; 183 uint16_t csu_tlb; 184 } cs_tlb_u; 185 } cs_s; 186 uint32_t cs_all; 187 }; 188 #define cs_cache_id cs_s.cs_cache_u.csu_cache_b[0] 189 #define cs_cache_d cs_s.cs_cache_u.csu_cache_b[1] 190 #define cs_cache cs_s.cs_cache_u.csu_cache 191 #define cs_tlb_id cs_s.cs_tlb_u.csu_tlb_b[0] 192 #define cs_tlb_d cs_s.cs_tlb_u.csu_tlb_b[1] 193 #define cs_tlb cs_s.cs_tlb_u.csu_tlb 194 195 /* 196 * Assigned to cs_all to force cacheops to work for a particular pmap 197 */ 198 #define PMAP_CACHE_STATE_ALL 0xffffffffu 199 #endif /* !ARM_MMU_EXTENDED */ 200 201 /* 202 * This structure is used by machine-dependent code to describe 203 * static mappings of devices, created at bootstrap time. 204 */ 205 struct pmap_devmap { 206 vaddr_t pd_va; /* virtual address */ 207 paddr_t pd_pa; /* physical address */ 208 psize_t pd_size; /* size of region */ 209 vm_prot_t pd_prot; /* protection code */ 210 int pd_cache; /* cache attributes */ 211 }; 212 213 /* 214 * The pmap structure itself 215 */ 216 struct pmap { 217 struct uvm_object pm_obj; 218 kmutex_t pm_obj_lock; 219 #define pm_lock pm_obj.vmobjlock 220 #ifndef ARM_HAS_VBAR 221 pd_entry_t *pm_pl1vec; 222 pd_entry_t pm_l1vec; 223 #endif 224 struct l2_dtable *pm_l2[L2_SIZE]; 225 struct pmap_statistics pm_stats; 226 LIST_ENTRY(pmap) pm_list; 227 #ifdef ARM_MMU_EXTENDED 228 pd_entry_t *pm_l1; 229 paddr_t pm_l1_pa; 230 bool pm_remove_all; 231 #ifdef MULTIPROCESSOR 232 kcpuset_t *pm_onproc; 233 kcpuset_t *pm_active; 234 #if PMAP_TLB_MAX > 1 235 u_int pm_shootdown_pending; 236 #endif 237 #endif 238 struct pmap_asid_info pm_pai[PMAP_TLB_MAX]; 239 #else 240 struct l1_ttable *pm_l1; 241 union pmap_cache_state pm_cstate; 242 uint8_t pm_domain; 243 bool pm_activated; 244 bool pm_remove_all; 245 #endif 246 }; 247 248 struct pmap_kernel { 249 struct pmap kernel_pmap; 250 }; 251 252 /* 253 * Physical / virtual address structure. In a number of places (particularly 254 * during bootstrapping) we need to keep track of the physical and virtual 255 * addresses of various pages 256 */ 257 typedef struct pv_addr { 258 SLIST_ENTRY(pv_addr) pv_list; 259 paddr_t pv_pa; 260 vaddr_t pv_va; 261 vsize_t pv_size; 262 uint8_t pv_cache; 263 uint8_t pv_prot; 264 } pv_addr_t; 265 typedef SLIST_HEAD(, pv_addr) pv_addrqh_t; 266 267 extern pv_addrqh_t pmap_freeq; 268 extern pv_addr_t kernelstack; 269 extern pv_addr_t abtstack; 270 extern pv_addr_t fiqstack; 271 extern pv_addr_t irqstack; 272 extern pv_addr_t undstack; 273 extern pv_addr_t idlestack; 274 extern pv_addr_t systempage; 275 extern pv_addr_t kernel_l1pt; 276 277 #ifdef ARM_MMU_EXTENDED 278 extern bool arm_has_tlbiasid_p; /* also in <arm/locore.h> */ 279 #endif 280 281 /* 282 * Determine various modes for PTEs (user vs. kernel, cacheable 283 * vs. non-cacheable). 284 */ 285 #define PTE_KERNEL 0 286 #define PTE_USER 1 287 #define PTE_NOCACHE 0 288 #define PTE_CACHE 1 289 #define PTE_PAGETABLE 2 290 291 /* 292 * Flags that indicate attributes of pages or mappings of pages. 293 * 294 * The PVF_MOD and PVF_REF flags are stored in the mdpage for each 295 * page. PVF_WIRED, PVF_WRITE, and PVF_NC are kept in individual 296 * pv_entry's for each page. They live in the same "namespace" so 297 * that we can clear multiple attributes at a time. 298 * 299 * Note the "non-cacheable" flag generally means the page has 300 * multiple mappings in a given address space. 301 */ 302 #define PVF_MOD 0x01 /* page is modified */ 303 #define PVF_REF 0x02 /* page is referenced */ 304 #define PVF_WIRED 0x04 /* mapping is wired */ 305 #define PVF_WRITE 0x08 /* mapping is writable */ 306 #define PVF_EXEC 0x10 /* mapping is executable */ 307 #ifdef PMAP_CACHE_VIVT 308 #define PVF_UNC 0x20 /* mapping is 'user' non-cacheable */ 309 #define PVF_KNC 0x40 /* mapping is 'kernel' non-cacheable */ 310 #define PVF_NC (PVF_UNC|PVF_KNC) 311 #endif 312 #ifdef PMAP_CACHE_VIPT 313 #define PVF_NC 0x20 /* mapping is 'kernel' non-cacheable */ 314 #define PVF_MULTCLR 0x40 /* mapping is multi-colored */ 315 #endif 316 #define PVF_COLORED 0x80 /* page has or had a color */ 317 #define PVF_KENTRY 0x0100 /* page entered via pmap_kenter_pa */ 318 #define PVF_KMPAGE 0x0200 /* page is used for kmem */ 319 #define PVF_DIRTY 0x0400 /* page may have dirty cache lines */ 320 #define PVF_KMOD 0x0800 /* unmanaged page is modified */ 321 #define PVF_KWRITE (PVF_KENTRY|PVF_WRITE) 322 #define PVF_DMOD (PVF_MOD|PVF_KMOD|PVF_KMPAGE) 323 324 /* 325 * Commonly referenced structures 326 */ 327 extern int pmap_debug_level; /* Only exists if PMAP_DEBUG */ 328 extern int arm_poolpage_vmfreelist; 329 330 /* 331 * Macros that we need to export 332 */ 333 #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) 334 #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count) 335 336 #define pmap_is_modified(pg) \ 337 (((pg)->mdpage.pvh_attrs & PVF_MOD) != 0) 338 #define pmap_is_referenced(pg) \ 339 (((pg)->mdpage.pvh_attrs & PVF_REF) != 0) 340 #define pmap_is_page_colored_p(md) \ 341 (((md)->pvh_attrs & PVF_COLORED) != 0) 342 343 #define pmap_copy(dp, sp, da, l, sa) /* nothing */ 344 345 #define pmap_phys_address(ppn) (arm_ptob((ppn))) 346 u_int arm32_mmap_flags(paddr_t); 347 #define ARM32_MMAP_WRITECOMBINE 0x40000000 348 #define ARM32_MMAP_CACHEABLE 0x20000000 349 #define pmap_mmap_flags(ppn) arm32_mmap_flags(ppn) 350 351 #define PMAP_PTE 0x10000000 /* kenter_pa */ 352 353 /* 354 * Functions that we need to export 355 */ 356 void pmap_procwr(struct proc *, vaddr_t, int); 357 void pmap_remove_all(pmap_t); 358 bool pmap_extract(pmap_t, vaddr_t, paddr_t *); 359 360 #define PMAP_NEED_PROCWR 361 #define PMAP_GROWKERNEL /* turn on pmap_growkernel interface */ 362 #define PMAP_ENABLE_PMAP_KMPAGE /* enable the PMAP_KMPAGE flag */ 363 364 #if (ARM_MMU_V6 + ARM_MMU_V7) > 0 365 #define PMAP_PREFER(hint, vap, sz, td) pmap_prefer((hint), (vap), (td)) 366 void pmap_prefer(vaddr_t, vaddr_t *, int); 367 #endif 368 369 void pmap_icache_sync_range(pmap_t, vaddr_t, vaddr_t); 370 371 /* Functions we use internally. */ 372 #ifdef PMAP_STEAL_MEMORY 373 void pmap_boot_pagealloc(psize_t, psize_t, psize_t, pv_addr_t *); 374 void pmap_boot_pageadd(pv_addr_t *); 375 vaddr_t pmap_steal_memory(vsize_t, vaddr_t *, vaddr_t *); 376 #endif 377 void pmap_bootstrap(vaddr_t, vaddr_t); 378 379 void pmap_do_remove(pmap_t, vaddr_t, vaddr_t, int); 380 int pmap_fault_fixup(pmap_t, vaddr_t, vm_prot_t, int); 381 int pmap_prefetchabt_fixup(void *); 382 bool pmap_get_pde_pte(pmap_t, vaddr_t, pd_entry_t **, pt_entry_t **); 383 bool pmap_get_pde(pmap_t, vaddr_t, pd_entry_t **); 384 struct pcb; 385 void pmap_set_pcb_pagedir(pmap_t, struct pcb *); 386 387 void pmap_debug(int); 388 void pmap_postinit(void); 389 390 void vector_page_setprot(int); 391 392 const struct pmap_devmap *pmap_devmap_find_pa(paddr_t, psize_t); 393 const struct pmap_devmap *pmap_devmap_find_va(vaddr_t, vsize_t); 394 395 /* Bootstrapping routines. */ 396 void pmap_map_section(vaddr_t, vaddr_t, paddr_t, int, int); 397 void pmap_map_entry(vaddr_t, vaddr_t, paddr_t, int, int); 398 vsize_t pmap_map_chunk(vaddr_t, vaddr_t, paddr_t, vsize_t, int, int); 399 void pmap_link_l2pt(vaddr_t, vaddr_t, pv_addr_t *); 400 void pmap_devmap_bootstrap(vaddr_t, const struct pmap_devmap *); 401 void pmap_devmap_register(const struct pmap_devmap *); 402 403 /* 404 * Special page zero routine for use by the idle loop (no cache cleans). 405 */ 406 bool pmap_pageidlezero(paddr_t); 407 #define PMAP_PAGEIDLEZERO(pa) pmap_pageidlezero((pa)) 408 409 #ifdef __HAVE_MM_MD_DIRECT_MAPPED_PHYS 410 /* 411 * For the pmap, this is a more useful way to map a direct mapped page. 412 * It returns either the direct-mapped VA or the VA supplied if it can't 413 * be direct mapped. 414 */ 415 vaddr_t pmap_direct_mapped_phys(paddr_t, bool *, vaddr_t); 416 #endif 417 418 /* 419 * used by dumpsys to record the PA of the L1 table 420 */ 421 uint32_t pmap_kernel_L1_addr(void); 422 /* 423 * The current top of kernel VM 424 */ 425 extern vaddr_t pmap_curmaxkvaddr; 426 427 #if defined(ARM_MMU_EXTENDED) && defined(__HAVE_MM_MD_DIRECT_MAPPED_PHYS) 428 /* 429 * Starting VA of direct mapped memory (usually KERNEL_BASE). 430 */ 431 extern vaddr_t pmap_directbase; 432 #endif 433 434 /* 435 * Useful macros and constants 436 */ 437 438 /* Virtual address to page table entry */ 439 static inline pt_entry_t * 440 vtopte(vaddr_t va) 441 { 442 pd_entry_t *pdep; 443 pt_entry_t *ptep; 444 445 KASSERT(trunc_page(va) == va); 446 447 if (pmap_get_pde_pte(pmap_kernel(), va, &pdep, &ptep) == false) 448 return (NULL); 449 return (ptep); 450 } 451 452 /* 453 * Virtual address to physical address 454 */ 455 static inline paddr_t 456 vtophys(vaddr_t va) 457 { 458 paddr_t pa; 459 460 if (pmap_extract(pmap_kernel(), va, &pa) == false) 461 return (0); /* XXXSCW: Panic? */ 462 463 return (pa); 464 } 465 466 /* 467 * The new pmap ensures that page-tables are always mapping Write-Thru. 468 * Thus, on some platforms we can run fast and loose and avoid syncing PTEs 469 * on every change. 470 * 471 * Unfortunately, not all CPUs have a write-through cache mode. So we 472 * define PMAP_NEEDS_PTE_SYNC for C code to conditionally do PTE syncs, 473 * and if there is the chance for PTE syncs to be needed, we define 474 * PMAP_INCLUDE_PTE_SYNC so e.g. assembly code can include (and run) 475 * the code. 476 */ 477 extern int pmap_needs_pte_sync; 478 #if defined(_KERNEL_OPT) 479 /* 480 * StrongARM SA-1 caches do not have a write-through mode. So, on these, 481 * we need to do PTE syncs. If only SA-1 is configured, then evaluate 482 * this at compile time. 483 */ 484 #if (ARM_MMU_SA1 + ARM_MMU_V6 != 0) && (ARM_NMMUS == 1) 485 #define PMAP_INCLUDE_PTE_SYNC 486 #if (ARM_MMU_V6 > 0) 487 #define PMAP_NEEDS_PTE_SYNC 1 488 #elif (ARM_MMU_SA1 == 0) 489 #define PMAP_NEEDS_PTE_SYNC 0 490 #endif 491 #endif 492 #endif /* _KERNEL_OPT */ 493 494 /* 495 * Provide a fallback in case we were not able to determine it at 496 * compile-time. 497 */ 498 #ifndef PMAP_NEEDS_PTE_SYNC 499 #define PMAP_NEEDS_PTE_SYNC pmap_needs_pte_sync 500 #define PMAP_INCLUDE_PTE_SYNC 501 #endif 502 503 static inline void 504 pmap_ptesync(pt_entry_t *ptep, size_t cnt) 505 { 506 if (PMAP_NEEDS_PTE_SYNC) { 507 cpu_dcache_wb_range((vaddr_t)ptep, cnt * sizeof(pt_entry_t)); 508 #ifdef SHEEVA_L2_CACHE 509 cpu_sdcache_wb_range((vaddr_t)ptep, -1, 510 cnt * sizeof(pt_entry_t)); 511 #endif 512 } 513 #if ARM_MMU_V7 > 0 514 __asm("dsb"); 515 #endif 516 } 517 518 #define PDE_SYNC(pdep) pmap_ptesync((pdep), 1) 519 #define PDE_SYNC_RANGE(pdep, cnt) pmap_ptesync((pdep), (cnt)) 520 #define PTE_SYNC(ptep) pmap_ptesync((ptep), PAGE_SIZE / L2_S_SIZE) 521 #define PTE_SYNC_RANGE(ptep, cnt) pmap_ptesync((ptep), (cnt)) 522 523 #define l1pte_valid_p(pde) ((pde) != 0) 524 #define l1pte_section_p(pde) (((pde) & L1_TYPE_MASK) == L1_TYPE_S) 525 #define l1pte_supersection_p(pde) (l1pte_section_p(pde) \ 526 && ((pde) & L1_S_V6_SUPER) != 0) 527 #define l1pte_page_p(pde) (((pde) & L1_TYPE_MASK) == L1_TYPE_C) 528 #define l1pte_fpage_p(pde) (((pde) & L1_TYPE_MASK) == L1_TYPE_F) 529 #define l1pte_pa(pde) ((pde) & L1_C_ADDR_MASK) 530 #define l1pte_index(v) ((vaddr_t)(v) >> L1_S_SHIFT) 531 #define l1pte_pgindex(v) l1pte_index((v) & L1_ADDR_BITS \ 532 & ~(PAGE_SIZE * PAGE_SIZE / sizeof(pt_entry_t) - 1)) 533 534 static inline void 535 l1pte_setone(pt_entry_t *pdep, pt_entry_t pde) 536 { 537 *pdep = pde; 538 } 539 540 static inline void 541 l1pte_set(pt_entry_t *pdep, pt_entry_t pde) 542 { 543 *pdep = pde; 544 if (l1pte_page_p(pde)) { 545 KASSERTMSG((((uintptr_t)pdep / sizeof(pde)) & (PAGE_SIZE / L2_T_SIZE - 1)) == 0, "%p", pdep); 546 for (size_t k = 1; k < PAGE_SIZE / L2_T_SIZE; k++) { 547 pde += L2_T_SIZE; 548 pdep[k] = pde; 549 } 550 } else if (l1pte_supersection_p(pde)) { 551 KASSERTMSG((((uintptr_t)pdep / sizeof(pde)) & (L1_SS_SIZE / L1_S_SIZE - 1)) == 0, "%p", pdep); 552 for (size_t k = 1; k < L1_SS_SIZE / L1_S_SIZE; k++) { 553 pdep[k] = pde; 554 } 555 } 556 } 557 558 #define l2pte_index(v) ((((v) & L2_ADDR_BITS) >> PGSHIFT) << (PGSHIFT-L2_S_SHIFT)) 559 #define l2pte_valid_p(pte) (((pte) & L2_TYPE_MASK) != L2_TYPE_INV) 560 #define l2pte_pa(pte) ((pte) & L2_S_FRAME) 561 #define l1pte_lpage_p(pte) (((pte) & L2_TYPE_MASK) == L2_TYPE_L) 562 #define l2pte_minidata_p(pte) (((pte) & \ 563 (L2_B | L2_C | L2_XS_T_TEX(TEX_XSCALE_X)))\ 564 == (L2_C | L2_XS_T_TEX(TEX_XSCALE_X))) 565 566 static inline void 567 l2pte_set(pt_entry_t *ptep, pt_entry_t pte, pt_entry_t opte) 568 { 569 if (l1pte_lpage_p(pte)) { 570 for (size_t k = 0; k < L2_L_SIZE / L2_S_SIZE; k++) { 571 *ptep++ = pte; 572 } 573 } else { 574 for (size_t k = 0; k < PAGE_SIZE / L2_S_SIZE; k++) { 575 KASSERTMSG(*ptep == opte, "%#x [*%p] != %#x", *ptep, ptep, opte); 576 *ptep++ = pte; 577 pte += L2_S_SIZE; 578 if (opte) 579 opte += L2_S_SIZE; 580 } 581 } 582 } 583 584 static inline void 585 l2pte_reset(pt_entry_t *ptep) 586 { 587 *ptep = 0; 588 for (vsize_t k = 1; k < PAGE_SIZE / L2_S_SIZE; k++) { 589 ptep[k] = 0; 590 } 591 } 592 593 /* L1 and L2 page table macros */ 594 #define pmap_pde_v(pde) l1pte_valid(*(pde)) 595 #define pmap_pde_section(pde) l1pte_section_p(*(pde)) 596 #define pmap_pde_supersection(pde) l1pte_supersection_p(*(pde)) 597 #define pmap_pde_page(pde) l1pte_page_p(*(pde)) 598 #define pmap_pde_fpage(pde) l1pte_fpage_p(*(pde)) 599 600 #define pmap_pte_v(pte) l2pte_valid_p(*(pte)) 601 #define pmap_pte_pa(pte) l2pte_pa(*(pte)) 602 603 /* Size of the kernel part of the L1 page table */ 604 #define KERNEL_PD_SIZE \ 605 (L1_TABLE_SIZE - (KERNEL_BASE >> L1_S_SHIFT) * sizeof(pd_entry_t)) 606 607 void bzero_page(vaddr_t); 608 void bcopy_page(vaddr_t, vaddr_t); 609 610 #ifdef FPU_VFP 611 void bzero_page_vfp(vaddr_t); 612 void bcopy_page_vfp(vaddr_t, vaddr_t); 613 #endif 614 615 /************************* ARM MMU configuration *****************************/ 616 617 #if (ARM_MMU_GENERIC + ARM_MMU_SA1 + ARM_MMU_V6 + ARM_MMU_V7) != 0 618 void pmap_copy_page_generic(paddr_t, paddr_t); 619 void pmap_zero_page_generic(paddr_t); 620 621 void pmap_pte_init_generic(void); 622 #if defined(CPU_ARM8) 623 void pmap_pte_init_arm8(void); 624 #endif 625 #if defined(CPU_ARM9) 626 void pmap_pte_init_arm9(void); 627 #endif /* CPU_ARM9 */ 628 #if defined(CPU_ARM10) 629 void pmap_pte_init_arm10(void); 630 #endif /* CPU_ARM10 */ 631 #if defined(CPU_ARM11) /* ARM_MMU_V6 */ 632 void pmap_pte_init_arm11(void); 633 #endif /* CPU_ARM11 */ 634 #if defined(CPU_ARM11MPCORE) /* ARM_MMU_V6 */ 635 void pmap_pte_init_arm11mpcore(void); 636 #endif 637 #if ARM_MMU_V7 == 1 638 void pmap_pte_init_armv7(void); 639 #endif /* ARM_MMU_V7 */ 640 #endif /* (ARM_MMU_GENERIC + ARM_MMU_SA1) != 0 */ 641 642 #if ARM_MMU_SA1 == 1 643 void pmap_pte_init_sa1(void); 644 #endif /* ARM_MMU_SA1 == 1 */ 645 646 #if ARM_MMU_XSCALE == 1 647 void pmap_copy_page_xscale(paddr_t, paddr_t); 648 void pmap_zero_page_xscale(paddr_t); 649 650 void pmap_pte_init_xscale(void); 651 652 void xscale_setup_minidata(vaddr_t, vaddr_t, paddr_t); 653 654 #define PMAP_UAREA(va) pmap_uarea(va) 655 void pmap_uarea(vaddr_t); 656 #endif /* ARM_MMU_XSCALE == 1 */ 657 658 extern pt_entry_t pte_l1_s_cache_mode; 659 extern pt_entry_t pte_l1_s_cache_mask; 660 661 extern pt_entry_t pte_l2_l_cache_mode; 662 extern pt_entry_t pte_l2_l_cache_mask; 663 664 extern pt_entry_t pte_l2_s_cache_mode; 665 extern pt_entry_t pte_l2_s_cache_mask; 666 667 extern pt_entry_t pte_l1_s_cache_mode_pt; 668 extern pt_entry_t pte_l2_l_cache_mode_pt; 669 extern pt_entry_t pte_l2_s_cache_mode_pt; 670 671 extern pt_entry_t pte_l1_s_wc_mode; 672 extern pt_entry_t pte_l2_l_wc_mode; 673 extern pt_entry_t pte_l2_s_wc_mode; 674 675 extern pt_entry_t pte_l1_s_prot_u; 676 extern pt_entry_t pte_l1_s_prot_w; 677 extern pt_entry_t pte_l1_s_prot_ro; 678 extern pt_entry_t pte_l1_s_prot_mask; 679 680 extern pt_entry_t pte_l2_s_prot_u; 681 extern pt_entry_t pte_l2_s_prot_w; 682 extern pt_entry_t pte_l2_s_prot_ro; 683 extern pt_entry_t pte_l2_s_prot_mask; 684 685 extern pt_entry_t pte_l2_l_prot_u; 686 extern pt_entry_t pte_l2_l_prot_w; 687 extern pt_entry_t pte_l2_l_prot_ro; 688 extern pt_entry_t pte_l2_l_prot_mask; 689 690 extern pt_entry_t pte_l1_ss_proto; 691 extern pt_entry_t pte_l1_s_proto; 692 extern pt_entry_t pte_l1_c_proto; 693 extern pt_entry_t pte_l2_s_proto; 694 695 extern void (*pmap_copy_page_func)(paddr_t, paddr_t); 696 extern void (*pmap_zero_page_func)(paddr_t); 697 698 #endif /* !_LOCORE */ 699 700 /*****************************************************************************/ 701 702 #define KERNEL_PID 0 /* The kernel uses ASID 0 */ 703 704 /* 705 * Definitions for MMU domains 706 */ 707 #define PMAP_DOMAINS 15 /* 15 'user' domains (1-15) */ 708 #define PMAP_DOMAIN_KERNEL 0 /* The kernel pmap uses domain #0 */ 709 #ifdef ARM_MMU_EXTENDED 710 #define PMAP_DOMAIN_USER 1 /* User pmaps use domain #1 */ 711 #endif 712 713 /* 714 * These macros define the various bit masks in the PTE. 715 * 716 * We use these macros since we use different bits on different processor 717 * models. 718 */ 719 #define L1_S_PROT_U_generic (L1_S_AP(AP_U)) 720 #define L1_S_PROT_W_generic (L1_S_AP(AP_W)) 721 #define L1_S_PROT_RO_generic (0) 722 #define L1_S_PROT_MASK_generic (L1_S_PROT_U|L1_S_PROT_W|L1_S_PROT_RO) 723 724 #define L1_S_PROT_U_xscale (L1_S_AP(AP_U)) 725 #define L1_S_PROT_W_xscale (L1_S_AP(AP_W)) 726 #define L1_S_PROT_RO_xscale (0) 727 #define L1_S_PROT_MASK_xscale (L1_S_PROT_U|L1_S_PROT_W|L1_S_PROT_RO) 728 729 #define L1_S_PROT_U_armv6 (L1_S_AP(AP_R) | L1_S_AP(AP_U)) 730 #define L1_S_PROT_W_armv6 (L1_S_AP(AP_W)) 731 #define L1_S_PROT_RO_armv6 (L1_S_AP(AP_R) | L1_S_AP(AP_RO)) 732 #define L1_S_PROT_MASK_armv6 (L1_S_PROT_U|L1_S_PROT_W|L1_S_PROT_RO) 733 734 #define L1_S_PROT_U_armv7 (L1_S_AP(AP_R) | L1_S_AP(AP_U)) 735 #define L1_S_PROT_W_armv7 (L1_S_AP(AP_W)) 736 #define L1_S_PROT_RO_armv7 (L1_S_AP(AP_R) | L1_S_AP(AP_RO)) 737 #define L1_S_PROT_MASK_armv7 (L1_S_PROT_U|L1_S_PROT_W|L1_S_PROT_RO) 738 739 #define L1_S_CACHE_MASK_generic (L1_S_B|L1_S_C) 740 #define L1_S_CACHE_MASK_xscale (L1_S_B|L1_S_C|L1_S_XS_TEX(TEX_XSCALE_X)) 741 #define L1_S_CACHE_MASK_armv6 (L1_S_B|L1_S_C|L1_S_XS_TEX(TEX_ARMV6_TEX)) 742 #define L1_S_CACHE_MASK_armv6n (L1_S_B|L1_S_C|L1_S_XS_TEX(TEX_ARMV6_TEX)|L1_S_V6_S) 743 #define L1_S_CACHE_MASK_armv7 (L1_S_B|L1_S_C|L1_S_XS_TEX(TEX_ARMV6_TEX)|L1_S_V6_S) 744 745 #define L2_L_PROT_U_generic (L2_AP(AP_U)) 746 #define L2_L_PROT_W_generic (L2_AP(AP_W)) 747 #define L2_L_PROT_RO_generic (0) 748 #define L2_L_PROT_MASK_generic (L2_L_PROT_U|L2_L_PROT_W|L2_L_PROT_RO) 749 750 #define L2_L_PROT_U_xscale (L2_AP(AP_U)) 751 #define L2_L_PROT_W_xscale (L2_AP(AP_W)) 752 #define L2_L_PROT_RO_xscale (0) 753 #define L2_L_PROT_MASK_xscale (L2_L_PROT_U|L2_L_PROT_W|L2_L_PROT_RO) 754 755 #define L2_L_PROT_U_armv6n (L2_AP0(AP_R) | L2_AP0(AP_U)) 756 #define L2_L_PROT_W_armv6n (L2_AP0(AP_W)) 757 #define L2_L_PROT_RO_armv6n (L2_AP0(AP_R) | L2_AP0(AP_RO)) 758 #define L2_L_PROT_MASK_armv6n (L2_L_PROT_U|L2_L_PROT_W|L2_L_PROT_RO) 759 760 #define L2_L_PROT_U_armv7 (L2_AP0(AP_R) | L2_AP0(AP_U)) 761 #define L2_L_PROT_W_armv7 (L2_AP0(AP_W)) 762 #define L2_L_PROT_RO_armv7 (L2_AP0(AP_R) | L2_AP0(AP_RO)) 763 #define L2_L_PROT_MASK_armv7 (L2_L_PROT_U|L2_L_PROT_W|L2_L_PROT_RO) 764 765 #define L2_L_CACHE_MASK_generic (L2_B|L2_C) 766 #define L2_L_CACHE_MASK_xscale (L2_B|L2_C|L2_XS_L_TEX(TEX_XSCALE_X)) 767 #define L2_L_CACHE_MASK_armv6 (L2_B|L2_C|L2_V6_L_TEX(TEX_ARMV6_TEX)) 768 #define L2_L_CACHE_MASK_armv6n (L2_B|L2_C|L2_V6_L_TEX(TEX_ARMV6_TEX)|L2_XS_S) 769 #define L2_L_CACHE_MASK_armv7 (L2_B|L2_C|L2_V6_L_TEX(TEX_ARMV6_TEX)|L2_XS_S) 770 771 #define L2_S_PROT_U_generic (L2_AP(AP_U)) 772 #define L2_S_PROT_W_generic (L2_AP(AP_W)) 773 #define L2_S_PROT_RO_generic (0) 774 #define L2_S_PROT_MASK_generic (L2_S_PROT_U|L2_S_PROT_W|L2_S_PROT_RO) 775 776 #define L2_S_PROT_U_xscale (L2_AP0(AP_U)) 777 #define L2_S_PROT_W_xscale (L2_AP0(AP_W)) 778 #define L2_S_PROT_RO_xscale (0) 779 #define L2_S_PROT_MASK_xscale (L2_S_PROT_U|L2_S_PROT_W|L2_S_PROT_RO) 780 781 #define L2_S_PROT_U_armv6n (L2_AP0(AP_R) | L2_AP0(AP_U)) 782 #define L2_S_PROT_W_armv6n (L2_AP0(AP_W)) 783 #define L2_S_PROT_RO_armv6n (L2_AP0(AP_R) | L2_AP0(AP_RO)) 784 #define L2_S_PROT_MASK_armv6n (L2_S_PROT_U|L2_S_PROT_W|L2_S_PROT_RO) 785 786 #define L2_S_PROT_U_armv7 (L2_AP0(AP_R) | L2_AP0(AP_U)) 787 #define L2_S_PROT_W_armv7 (L2_AP0(AP_W)) 788 #define L2_S_PROT_RO_armv7 (L2_AP0(AP_R) | L2_AP0(AP_RO)) 789 #define L2_S_PROT_MASK_armv7 (L2_S_PROT_U|L2_S_PROT_W|L2_S_PROT_RO) 790 791 #define L2_S_CACHE_MASK_generic (L2_B|L2_C) 792 #define L2_S_CACHE_MASK_xscale (L2_B|L2_C|L2_XS_T_TEX(TEX_XSCALE_X)) 793 #define L2_XS_CACHE_MASK_armv6 (L2_B|L2_C|L2_V6_XS_TEX(TEX_ARMV6_TEX)) 794 #define L2_S_CACHE_MASK_armv6n L2_XS_CACHE_MASK_armv6 795 #ifdef ARMV6_EXTENDED_SMALL_PAGE 796 #define L2_S_CACHE_MASK_armv6c L2_XS_CACHE_MASK_armv6 797 #else 798 #define L2_S_CACHE_MASK_armv6c L2_S_CACHE_MASK_generic 799 #endif 800 #define L2_S_CACHE_MASK_armv7 (L2_B|L2_C|L2_V6_XS_TEX(TEX_ARMV6_TEX)|L2_XS_S) 801 802 803 #define L1_S_PROTO_generic (L1_TYPE_S | L1_S_IMP) 804 #define L1_S_PROTO_xscale (L1_TYPE_S) 805 #define L1_S_PROTO_armv6 (L1_TYPE_S) 806 #define L1_S_PROTO_armv7 (L1_TYPE_S) 807 808 #define L1_SS_PROTO_generic 0 809 #define L1_SS_PROTO_xscale 0 810 #define L1_SS_PROTO_armv6 (L1_TYPE_S | L1_S_V6_SS) 811 #define L1_SS_PROTO_armv7 (L1_TYPE_S | L1_S_V6_SS) 812 813 #define L1_C_PROTO_generic (L1_TYPE_C | L1_C_IMP2) 814 #define L1_C_PROTO_xscale (L1_TYPE_C) 815 #define L1_C_PROTO_armv6 (L1_TYPE_C) 816 #define L1_C_PROTO_armv7 (L1_TYPE_C) 817 818 #define L2_L_PROTO (L2_TYPE_L) 819 820 #define L2_S_PROTO_generic (L2_TYPE_S) 821 #define L2_S_PROTO_xscale (L2_TYPE_XS) 822 #ifdef ARMV6_EXTENDED_SMALL_PAGE 823 #define L2_S_PROTO_armv6c (L2_TYPE_XS) /* XP=0, extended small page */ 824 #else 825 #define L2_S_PROTO_armv6c (L2_TYPE_S) /* XP=0, subpage APs */ 826 #endif 827 #ifdef ARM_MMU_EXTENDED 828 #define L2_S_PROTO_armv6n (L2_TYPE_S|L2_XS_XN) 829 #else 830 #define L2_S_PROTO_armv6n (L2_TYPE_S) /* with XP=1 */ 831 #endif 832 #ifdef ARM_MMU_EXTENDED 833 #define L2_S_PROTO_armv7 (L2_TYPE_S|L2_XS_XN) 834 #else 835 #define L2_S_PROTO_armv7 (L2_TYPE_S) 836 #endif 837 838 /* 839 * User-visible names for the ones that vary with MMU class. 840 */ 841 842 #if ARM_NMMUS > 1 843 /* More than one MMU class configured; use variables. */ 844 #define L1_S_PROT_U pte_l1_s_prot_u 845 #define L1_S_PROT_W pte_l1_s_prot_w 846 #define L1_S_PROT_RO pte_l1_s_prot_ro 847 #define L1_S_PROT_MASK pte_l1_s_prot_mask 848 849 #define L2_S_PROT_U pte_l2_s_prot_u 850 #define L2_S_PROT_W pte_l2_s_prot_w 851 #define L2_S_PROT_RO pte_l2_s_prot_ro 852 #define L2_S_PROT_MASK pte_l2_s_prot_mask 853 854 #define L2_L_PROT_U pte_l2_l_prot_u 855 #define L2_L_PROT_W pte_l2_l_prot_w 856 #define L2_L_PROT_RO pte_l2_l_prot_ro 857 #define L2_L_PROT_MASK pte_l2_l_prot_mask 858 859 #define L1_S_CACHE_MASK pte_l1_s_cache_mask 860 #define L2_L_CACHE_MASK pte_l2_l_cache_mask 861 #define L2_S_CACHE_MASK pte_l2_s_cache_mask 862 863 #define L1_SS_PROTO pte_l1_ss_proto 864 #define L1_S_PROTO pte_l1_s_proto 865 #define L1_C_PROTO pte_l1_c_proto 866 #define L2_S_PROTO pte_l2_s_proto 867 868 #define pmap_copy_page(s, d) (*pmap_copy_page_func)((s), (d)) 869 #define pmap_zero_page(d) (*pmap_zero_page_func)((d)) 870 #elif (ARM_MMU_GENERIC + ARM_MMU_SA1) != 0 871 #define L1_S_PROT_U L1_S_PROT_U_generic 872 #define L1_S_PROT_W L1_S_PROT_W_generic 873 #define L1_S_PROT_RO L1_S_PROT_RO_generic 874 #define L1_S_PROT_MASK L1_S_PROT_MASK_generic 875 876 #define L2_S_PROT_U L2_S_PROT_U_generic 877 #define L2_S_PROT_W L2_S_PROT_W_generic 878 #define L2_S_PROT_RO L2_S_PROT_RO_generic 879 #define L2_S_PROT_MASK L2_S_PROT_MASK_generic 880 881 #define L2_L_PROT_U L2_L_PROT_U_generic 882 #define L2_L_PROT_W L2_L_PROT_W_generic 883 #define L2_L_PROT_RO L2_L_PROT_RO_generic 884 #define L2_L_PROT_MASK L2_L_PROT_MASK_generic 885 886 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_generic 887 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_generic 888 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_generic 889 890 #define L1_SS_PROTO L1_SS_PROTO_generic 891 #define L1_S_PROTO L1_S_PROTO_generic 892 #define L1_C_PROTO L1_C_PROTO_generic 893 #define L2_S_PROTO L2_S_PROTO_generic 894 895 #define pmap_copy_page(s, d) pmap_copy_page_generic((s), (d)) 896 #define pmap_zero_page(d) pmap_zero_page_generic((d)) 897 #elif ARM_MMU_V6N != 0 898 #define L1_S_PROT_U L1_S_PROT_U_armv6 899 #define L1_S_PROT_W L1_S_PROT_W_armv6 900 #define L1_S_PROT_RO L1_S_PROT_RO_armv6 901 #define L1_S_PROT_MASK L1_S_PROT_MASK_armv6 902 903 #define L2_S_PROT_U L2_S_PROT_U_armv6n 904 #define L2_S_PROT_W L2_S_PROT_W_armv6n 905 #define L2_S_PROT_RO L2_S_PROT_RO_armv6n 906 #define L2_S_PROT_MASK L2_S_PROT_MASK_armv6n 907 908 #define L2_L_PROT_U L2_L_PROT_U_armv6n 909 #define L2_L_PROT_W L2_L_PROT_W_armv6n 910 #define L2_L_PROT_RO L2_L_PROT_RO_armv6n 911 #define L2_L_PROT_MASK L2_L_PROT_MASK_armv6n 912 913 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_armv6n 914 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_armv6n 915 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_armv6n 916 917 /* These prototypes make writeable mappings, while the other MMU types 918 * make read-only mappings. */ 919 #define L1_SS_PROTO L1_SS_PROTO_armv6 920 #define L1_S_PROTO L1_S_PROTO_armv6 921 #define L1_C_PROTO L1_C_PROTO_armv6 922 #define L2_S_PROTO L2_S_PROTO_armv6n 923 924 #define pmap_copy_page(s, d) pmap_copy_page_generic((s), (d)) 925 #define pmap_zero_page(d) pmap_zero_page_generic((d)) 926 #elif ARM_MMU_V6C != 0 927 #define L1_S_PROT_U L1_S_PROT_U_generic 928 #define L1_S_PROT_W L1_S_PROT_W_generic 929 #define L1_S_PROT_RO L1_S_PROT_RO_generic 930 #define L1_S_PROT_MASK L1_S_PROT_MASK_generic 931 932 #define L2_S_PROT_U L2_S_PROT_U_generic 933 #define L2_S_PROT_W L2_S_PROT_W_generic 934 #define L2_S_PROT_RO L2_S_PROT_RO_generic 935 #define L2_S_PROT_MASK L2_S_PROT_MASK_generic 936 937 #define L2_L_PROT_U L2_L_PROT_U_generic 938 #define L2_L_PROT_W L2_L_PROT_W_generic 939 #define L2_L_PROT_RO L2_L_PROT_RO_generic 940 #define L2_L_PROT_MASK L2_L_PROT_MASK_generic 941 942 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_generic 943 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_generic 944 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_generic 945 946 #define L1_SS_PROTO L1_SS_PROTO_armv6 947 #define L1_S_PROTO L1_S_PROTO_generic 948 #define L1_C_PROTO L1_C_PROTO_generic 949 #define L2_S_PROTO L2_S_PROTO_generic 950 951 #define pmap_copy_page(s, d) pmap_copy_page_generic((s), (d)) 952 #define pmap_zero_page(d) pmap_zero_page_generic((d)) 953 #elif ARM_MMU_XSCALE == 1 954 #define L1_S_PROT_U L1_S_PROT_U_generic 955 #define L1_S_PROT_W L1_S_PROT_W_generic 956 #define L1_S_PROT_RO L1_S_PROT_RO_generic 957 #define L1_S_PROT_MASK L1_S_PROT_MASK_generic 958 959 #define L2_S_PROT_U L2_S_PROT_U_xscale 960 #define L2_S_PROT_W L2_S_PROT_W_xscale 961 #define L2_S_PROT_RO L2_S_PROT_RO_xscale 962 #define L2_S_PROT_MASK L2_S_PROT_MASK_xscale 963 964 #define L2_L_PROT_U L2_L_PROT_U_generic 965 #define L2_L_PROT_W L2_L_PROT_W_generic 966 #define L2_L_PROT_RO L2_L_PROT_RO_generic 967 #define L2_L_PROT_MASK L2_L_PROT_MASK_generic 968 969 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_xscale 970 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_xscale 971 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_xscale 972 973 #define L1_SS_PROTO L1_SS_PROTO_xscale 974 #define L1_S_PROTO L1_S_PROTO_xscale 975 #define L1_C_PROTO L1_C_PROTO_xscale 976 #define L2_S_PROTO L2_S_PROTO_xscale 977 978 #define pmap_copy_page(s, d) pmap_copy_page_xscale((s), (d)) 979 #define pmap_zero_page(d) pmap_zero_page_xscale((d)) 980 #elif ARM_MMU_V7 == 1 981 #define L1_S_PROT_U L1_S_PROT_U_armv7 982 #define L1_S_PROT_W L1_S_PROT_W_armv7 983 #define L1_S_PROT_RO L1_S_PROT_RO_armv7 984 #define L1_S_PROT_MASK L1_S_PROT_MASK_armv7 985 986 #define L2_S_PROT_U L2_S_PROT_U_armv7 987 #define L2_S_PROT_W L2_S_PROT_W_armv7 988 #define L2_S_PROT_RO L2_S_PROT_RO_armv7 989 #define L2_S_PROT_MASK L2_S_PROT_MASK_armv7 990 991 #define L2_L_PROT_U L2_L_PROT_U_armv7 992 #define L2_L_PROT_W L2_L_PROT_W_armv7 993 #define L2_L_PROT_RO L2_L_PROT_RO_armv7 994 #define L2_L_PROT_MASK L2_L_PROT_MASK_armv7 995 996 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_armv7 997 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_armv7 998 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_armv7 999 1000 /* These prototypes make writeable mappings, while the other MMU types 1001 * make read-only mappings. */ 1002 #define L1_SS_PROTO L1_SS_PROTO_armv7 1003 #define L1_S_PROTO L1_S_PROTO_armv7 1004 #define L1_C_PROTO L1_C_PROTO_armv7 1005 #define L2_S_PROTO L2_S_PROTO_armv7 1006 1007 #define pmap_copy_page(s, d) pmap_copy_page_generic((s), (d)) 1008 #define pmap_zero_page(d) pmap_zero_page_generic((d)) 1009 #endif /* ARM_NMMUS > 1 */ 1010 1011 /* 1012 * Macros to set and query the write permission on page descriptors. 1013 */ 1014 #define l1pte_set_writable(pte) (((pte) & ~L1_S_PROT_RO) | L1_S_PROT_W) 1015 #define l1pte_set_readonly(pte) (((pte) & ~L1_S_PROT_W) | L1_S_PROT_RO) 1016 #define l2pte_set_writable(pte) (((pte) & ~L2_S_PROT_RO) | L2_S_PROT_W) 1017 #define l2pte_set_readonly(pte) (((pte) & ~L2_S_PROT_W) | L2_S_PROT_RO) 1018 1019 #define l2pte_writable_p(pte) (((pte) & L2_S_PROT_W) == L2_S_PROT_W && \ 1020 (L2_S_PROT_RO == 0 || \ 1021 ((pte) & L2_S_PROT_RO) != L2_S_PROT_RO)) 1022 1023 /* 1024 * These macros return various bits based on kernel/user and protection. 1025 * Note that the compiler will usually fold these at compile time. 1026 */ 1027 #define L1_S_PROT(ku, pr) ((((ku) == PTE_USER) ? L1_S_PROT_U : 0) | \ 1028 (((pr) & VM_PROT_WRITE) ? L1_S_PROT_W : L1_S_PROT_RO)) 1029 1030 #define L2_L_PROT(ku, pr) ((((ku) == PTE_USER) ? L2_L_PROT_U : 0) | \ 1031 (((pr) & VM_PROT_WRITE) ? L2_L_PROT_W : L2_L_PROT_RO)) 1032 1033 #define L2_S_PROT(ku, pr) ((((ku) == PTE_USER) ? L2_S_PROT_U : 0) | \ 1034 (((pr) & VM_PROT_WRITE) ? L2_S_PROT_W : L2_S_PROT_RO)) 1035 1036 /* 1037 * Macros to test if a mapping is mappable with an L1 SuperSection, 1038 * L1 Section, or an L2 Large Page mapping. 1039 */ 1040 #define L1_SS_MAPPABLE_P(va, pa, size) \ 1041 ((((va) | (pa)) & L1_SS_OFFSET) == 0 && (size) >= L1_SS_SIZE) 1042 1043 #define L1_S_MAPPABLE_P(va, pa, size) \ 1044 ((((va) | (pa)) & L1_S_OFFSET) == 0 && (size) >= L1_S_SIZE) 1045 1046 #define L2_L_MAPPABLE_P(va, pa, size) \ 1047 ((((va) | (pa)) & L2_L_OFFSET) == 0 && (size) >= L2_L_SIZE) 1048 1049 #ifndef _LOCORE 1050 /* 1051 * Hooks for the pool allocator. 1052 */ 1053 #define POOL_VTOPHYS(va) vtophys((vaddr_t) (va)) 1054 extern paddr_t physical_start, physical_end; 1055 #ifdef PMAP_NEED_ALLOC_POOLPAGE 1056 struct vm_page *arm_pmap_alloc_poolpage(int); 1057 #define PMAP_ALLOC_POOLPAGE arm_pmap_alloc_poolpage 1058 #endif 1059 #if defined(PMAP_NEED_ALLOC_POOLPAGE) || defined(__HAVE_MM_MD_DIRECT_MAPPED_PHYS) 1060 vaddr_t pmap_map_poolpage(paddr_t); 1061 paddr_t pmap_unmap_poolpage(vaddr_t); 1062 #define PMAP_MAP_POOLPAGE(pa) pmap_map_poolpage(pa) 1063 #define PMAP_UNMAP_POOLPAGE(va) pmap_unmap_poolpage(va) 1064 #endif 1065 1066 /* 1067 * pmap-specific data store in the vm_page structure. 1068 */ 1069 #define __HAVE_VM_PAGE_MD 1070 struct vm_page_md { 1071 SLIST_HEAD(,pv_entry) pvh_list; /* pv_entry list */ 1072 int pvh_attrs; /* page attributes */ 1073 u_int uro_mappings; 1074 u_int urw_mappings; 1075 union { 1076 u_short s_mappings[2]; /* Assume kernel count <= 65535 */ 1077 u_int i_mappings; 1078 } k_u; 1079 #define kro_mappings k_u.s_mappings[0] 1080 #define krw_mappings k_u.s_mappings[1] 1081 #define k_mappings k_u.i_mappings 1082 }; 1083 1084 /* 1085 * Set the default color of each page. 1086 */ 1087 #if ARM_MMU_V6 > 0 1088 #define VM_MDPAGE_PVH_ATTRS_INIT(pg) \ 1089 (pg)->mdpage.pvh_attrs = (pg)->phys_addr & arm_cache_prefer_mask 1090 #else 1091 #define VM_MDPAGE_PVH_ATTRS_INIT(pg) \ 1092 (pg)->mdpage.pvh_attrs = 0 1093 #endif 1094 1095 #define VM_MDPAGE_INIT(pg) \ 1096 do { \ 1097 SLIST_INIT(&(pg)->mdpage.pvh_list); \ 1098 VM_MDPAGE_PVH_ATTRS_INIT(pg); \ 1099 (pg)->mdpage.uro_mappings = 0; \ 1100 (pg)->mdpage.urw_mappings = 0; \ 1101 (pg)->mdpage.k_mappings = 0; \ 1102 } while (/*CONSTCOND*/0) 1103 1104 #endif /* !_LOCORE */ 1105 1106 #endif /* _KERNEL */ 1107 1108 #endif /* _ARM32_PMAP_H_ */ 1109
Indexes created Mon Sep 29 21:09:56 GMT 2025