pmap.h revision 1.123
1 /* $NetBSD: pmap.h,v 1.123 2014/02/26 01:03:03 matt 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 /* 84 * a pmap describes a processes' 4GB virtual address space. this 85 * virtual address space can be broken up into 4096 1MB regions which 86 * are described by L1 PTEs in the L1 table. 87 * 88 * There is a line drawn at KERNEL_BASE. Everything below that line 89 * changes when the VM context is switched. Everything above that line 90 * is the same no matter which VM context is running. This is achieved 91 * by making the L1 PTEs for those slots above KERNEL_BASE reference 92 * kernel L2 tables. 93 * 94 * The basic layout of the virtual address space thus looks like this: 95 * 96 * 0xffffffff 97 * . 98 * . 99 * . 100 * KERNEL_BASE 101 * -------------------- 102 * . 103 * . 104 * . 105 * 0x00000000 106 */ 107 108 /* 109 * The number of L2 descriptor tables which can be tracked by an l2_dtable. 110 * A bucket size of 16 provides for 16MB of contiguous virtual address 111 * space per l2_dtable. Most processes will, therefore, require only two or 112 * three of these to map their whole working set. 113 */ 114 #define L2_BUCKET_LOG2 4 115 #define L2_BUCKET_SIZE (1 << L2_BUCKET_LOG2) 116 117 /* 118 * Given the above "L2-descriptors-per-l2_dtable" constant, the number 119 * of l2_dtable structures required to track all possible page descriptors 120 * mappable by an L1 translation table is given by the following constants: 121 */ 122 #define L2_LOG2 ((32 - L1_S_SHIFT) - L2_BUCKET_LOG2) 123 #define L2_SIZE (1 << L2_LOG2) 124 125 /* 126 * tell MI code that the cache is virtually-indexed. 127 * ARMv6 is physically-tagged but all others are virtually-tagged. 128 */ 129 #if (ARM_MMU_V6 + ARM_MMU_V7) > 0 130 #define PMAP_CACHE_VIPT 131 #else 132 #define PMAP_CACHE_VIVT 133 #endif 134 135 #ifndef _LOCORE 136 137 struct l1_ttable; 138 struct l2_dtable; 139 140 /* 141 * Track cache/tlb occupancy using the following structure 142 */ 143 union pmap_cache_state { 144 struct { 145 union { 146 uint8_t csu_cache_b[2]; 147 uint16_t csu_cache; 148 } cs_cache_u; 149 150 union { 151 uint8_t csu_tlb_b[2]; 152 uint16_t csu_tlb; 153 } cs_tlb_u; 154 } cs_s; 155 uint32_t cs_all; 156 }; 157 #define cs_cache_id cs_s.cs_cache_u.csu_cache_b[0] 158 #define cs_cache_d cs_s.cs_cache_u.csu_cache_b[1] 159 #define cs_cache cs_s.cs_cache_u.csu_cache 160 #define cs_tlb_id cs_s.cs_tlb_u.csu_tlb_b[0] 161 #define cs_tlb_d cs_s.cs_tlb_u.csu_tlb_b[1] 162 #define cs_tlb cs_s.cs_tlb_u.csu_tlb 163 164 /* 165 * Assigned to cs_all to force cacheops to work for a particular pmap 166 */ 167 #define PMAP_CACHE_STATE_ALL 0xffffffffu 168 169 /* 170 * This structure is used by machine-dependent code to describe 171 * static mappings of devices, created at bootstrap time. 172 */ 173 struct pmap_devmap { 174 vaddr_t pd_va; /* virtual address */ 175 paddr_t pd_pa; /* physical address */ 176 psize_t pd_size; /* size of region */ 177 vm_prot_t pd_prot; /* protection code */ 178 int pd_cache; /* cache attributes */ 179 }; 180 181 /* 182 * The pmap structure itself 183 */ 184 struct pmap { 185 uint8_t pm_domain; 186 bool pm_remove_all; 187 bool pm_activated; 188 struct l1_ttable *pm_l1; 189 #ifndef ARM_HAS_VBAR 190 pd_entry_t *pm_pl1vec; 191 #endif 192 pd_entry_t pm_l1vec; 193 union pmap_cache_state pm_cstate; 194 struct uvm_object pm_obj; 195 kmutex_t pm_obj_lock; 196 #define pm_lock pm_obj.vmobjlock 197 struct l2_dtable *pm_l2[L2_SIZE]; 198 struct pmap_statistics pm_stats; 199 LIST_ENTRY(pmap) pm_list; 200 }; 201 202 /* 203 * Physical / virtual address structure. In a number of places (particularly 204 * during bootstrapping) we need to keep track of the physical and virtual 205 * addresses of various pages 206 */ 207 typedef struct pv_addr { 208 SLIST_ENTRY(pv_addr) pv_list; 209 paddr_t pv_pa; 210 vaddr_t pv_va; 211 vsize_t pv_size; 212 uint8_t pv_cache; 213 uint8_t pv_prot; 214 } pv_addr_t; 215 typedef SLIST_HEAD(, pv_addr) pv_addrqh_t; 216 217 extern pv_addrqh_t pmap_freeq; 218 extern pv_addr_t kernelstack; 219 extern pv_addr_t abtstack; 220 extern pv_addr_t fiqstack; 221 extern pv_addr_t irqstack; 222 extern pv_addr_t undstack; 223 extern pv_addr_t idlestack; 224 extern pv_addr_t systempage; 225 extern pv_addr_t kernel_l1pt; 226 227 /* 228 * Determine various modes for PTEs (user vs. kernel, cacheable 229 * vs. non-cacheable). 230 */ 231 #define PTE_KERNEL 0 232 #define PTE_USER 1 233 #define PTE_NOCACHE 0 234 #define PTE_CACHE 1 235 #define PTE_PAGETABLE 2 236 237 /* 238 * Flags that indicate attributes of pages or mappings of pages. 239 * 240 * The PVF_MOD and PVF_REF flags are stored in the mdpage for each 241 * page. PVF_WIRED, PVF_WRITE, and PVF_NC are kept in individual 242 * pv_entry's for each page. They live in the same "namespace" so 243 * that we can clear multiple attributes at a time. 244 * 245 * Note the "non-cacheable" flag generally means the page has 246 * multiple mappings in a given address space. 247 */ 248 #define PVF_MOD 0x01 /* page is modified */ 249 #define PVF_REF 0x02 /* page is referenced */ 250 #define PVF_WIRED 0x04 /* mapping is wired */ 251 #define PVF_WRITE 0x08 /* mapping is writable */ 252 #define PVF_EXEC 0x10 /* mapping is executable */ 253 #ifdef PMAP_CACHE_VIVT 254 #define PVF_UNC 0x20 /* mapping is 'user' non-cacheable */ 255 #define PVF_KNC 0x40 /* mapping is 'kernel' non-cacheable */ 256 #define PVF_NC (PVF_UNC|PVF_KNC) 257 #endif 258 #ifdef PMAP_CACHE_VIPT 259 #define PVF_NC 0x20 /* mapping is 'kernel' non-cacheable */ 260 #define PVF_MULTCLR 0x40 /* mapping is multi-colored */ 261 #endif 262 #define PVF_COLORED 0x80 /* page has or had a color */ 263 #define PVF_KENTRY 0x0100 /* page entered via pmap_kenter_pa */ 264 #define PVF_KMPAGE 0x0200 /* page is used for kmem */ 265 #define PVF_DIRTY 0x0400 /* page may have dirty cache lines */ 266 #define PVF_KMOD 0x0800 /* unmanaged page is modified */ 267 #define PVF_KWRITE (PVF_KENTRY|PVF_WRITE) 268 #define PVF_DMOD (PVF_MOD|PVF_KMOD|PVF_KMPAGE) 269 270 /* 271 * Commonly referenced structures 272 */ 273 extern int pmap_debug_level; /* Only exists if PMAP_DEBUG */ 274 extern int arm_poolpage_vmfreelist; 275 276 /* 277 * Macros that we need to export 278 */ 279 #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) 280 #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count) 281 282 #define pmap_is_modified(pg) \ 283 (((pg)->mdpage.pvh_attrs & PVF_MOD) != 0) 284 #define pmap_is_referenced(pg) \ 285 (((pg)->mdpage.pvh_attrs & PVF_REF) != 0) 286 #define pmap_is_page_colored_p(md) \ 287 (((md)->pvh_attrs & PVF_COLORED) != 0) 288 289 #define pmap_copy(dp, sp, da, l, sa) /* nothing */ 290 291 #define pmap_phys_address(ppn) (arm_ptob((ppn))) 292 u_int arm32_mmap_flags(paddr_t); 293 #define ARM32_MMAP_WRITECOMBINE 0x40000000 294 #define ARM32_MMAP_CACHEABLE 0x20000000 295 #define pmap_mmap_flags(ppn) arm32_mmap_flags(ppn) 296 297 #define PMAP_PTE 0x10000000 /* kenter_pa */ 298 299 /* 300 * Functions that we need to export 301 */ 302 void pmap_procwr(struct proc *, vaddr_t, int); 303 void pmap_remove_all(pmap_t); 304 bool pmap_extract(pmap_t, vaddr_t, paddr_t *); 305 306 #define PMAP_NEED_PROCWR 307 #define PMAP_GROWKERNEL /* turn on pmap_growkernel interface */ 308 #define PMAP_ENABLE_PMAP_KMPAGE /* enable the PMAP_KMPAGE flag */ 309 310 #if (ARM_MMU_V6 + ARM_MMU_V7) > 0 311 #define PMAP_PREFER(hint, vap, sz, td) pmap_prefer((hint), (vap), (td)) 312 void pmap_prefer(vaddr_t, vaddr_t *, int); 313 #endif 314 315 void pmap_icache_sync_range(pmap_t, vaddr_t, vaddr_t); 316 317 /* Functions we use internally. */ 318 #ifdef PMAP_STEAL_MEMORY 319 void pmap_boot_pagealloc(psize_t, psize_t, psize_t, pv_addr_t *); 320 void pmap_boot_pageadd(pv_addr_t *); 321 vaddr_t pmap_steal_memory(vsize_t, vaddr_t *, vaddr_t *); 322 #endif 323 void pmap_bootstrap(vaddr_t, vaddr_t); 324 325 void pmap_do_remove(pmap_t, vaddr_t, vaddr_t, int); 326 int pmap_fault_fixup(pmap_t, vaddr_t, vm_prot_t, int); 327 bool pmap_get_pde_pte(pmap_t, vaddr_t, pd_entry_t **, pt_entry_t **); 328 bool pmap_get_pde(pmap_t, vaddr_t, pd_entry_t **); 329 struct pcb; 330 void pmap_set_pcb_pagedir(pmap_t, struct pcb *); 331 332 void pmap_debug(int); 333 void pmap_postinit(void); 334 335 void vector_page_setprot(int); 336 337 const struct pmap_devmap *pmap_devmap_find_pa(paddr_t, psize_t); 338 const struct pmap_devmap *pmap_devmap_find_va(vaddr_t, vsize_t); 339 340 /* Bootstrapping routines. */ 341 void pmap_map_section(vaddr_t, vaddr_t, paddr_t, int, int); 342 void pmap_map_entry(vaddr_t, vaddr_t, paddr_t, int, int); 343 vsize_t pmap_map_chunk(vaddr_t, vaddr_t, paddr_t, vsize_t, int, int); 344 void pmap_link_l2pt(vaddr_t, vaddr_t, pv_addr_t *); 345 void pmap_devmap_bootstrap(vaddr_t, const struct pmap_devmap *); 346 void pmap_devmap_register(const struct pmap_devmap *); 347 348 /* 349 * Special page zero routine for use by the idle loop (no cache cleans). 350 */ 351 bool pmap_pageidlezero(paddr_t); 352 #define PMAP_PAGEIDLEZERO(pa) pmap_pageidlezero((pa)) 353 354 /* 355 * used by dumpsys to record the PA of the L1 table 356 */ 357 uint32_t pmap_kernel_L1_addr(void); 358 /* 359 * The current top of kernel VM 360 */ 361 extern vaddr_t pmap_curmaxkvaddr; 362 363 /* 364 * Useful macros and constants 365 */ 366 367 /* Virtual address to page table entry */ 368 static inline pt_entry_t * 369 vtopte(vaddr_t va) 370 { 371 pd_entry_t *pdep; 372 pt_entry_t *ptep; 373 374 if (pmap_get_pde_pte(pmap_kernel(), va, &pdep, &ptep) == false) 375 return (NULL); 376 return (ptep); 377 } 378 379 /* 380 * Virtual address to physical address 381 */ 382 static inline paddr_t 383 vtophys(vaddr_t va) 384 { 385 paddr_t pa; 386 387 if (pmap_extract(pmap_kernel(), va, &pa) == false) 388 return (0); /* XXXSCW: Panic? */ 389 390 return (pa); 391 } 392 393 /* 394 * The new pmap ensures that page-tables are always mapping Write-Thru. 395 * Thus, on some platforms we can run fast and loose and avoid syncing PTEs 396 * on every change. 397 * 398 * Unfortunately, not all CPUs have a write-through cache mode. So we 399 * define PMAP_NEEDS_PTE_SYNC for C code to conditionally do PTE syncs, 400 * and if there is the chance for PTE syncs to be needed, we define 401 * PMAP_INCLUDE_PTE_SYNC so e.g. assembly code can include (and run) 402 * the code. 403 */ 404 extern int pmap_needs_pte_sync; 405 #if defined(_KERNEL_OPT) 406 /* 407 * StrongARM SA-1 caches do not have a write-through mode. So, on these, 408 * we need to do PTE syncs. If only SA-1 is configured, then evaluate 409 * this at compile time. 410 */ 411 #if (ARM_MMU_SA1 + ARM_MMU_V6 != 0) && (ARM_NMMUS == 1) 412 #define PMAP_INCLUDE_PTE_SYNC 413 #if (ARM_MMU_V6 > 0) 414 #define PMAP_NEEDS_PTE_SYNC 1 415 #elif (ARM_MMU_SA1 == 0) 416 #define PMAP_NEEDS_PTE_SYNC 0 417 #endif 418 #endif 419 #endif /* _KERNEL_OPT */ 420 421 /* 422 * Provide a fallback in case we were not able to determine it at 423 * compile-time. 424 */ 425 #ifndef PMAP_NEEDS_PTE_SYNC 426 #define PMAP_NEEDS_PTE_SYNC pmap_needs_pte_sync 427 #define PMAP_INCLUDE_PTE_SYNC 428 #endif 429 430 static inline void 431 pmap_ptesync(pt_entry_t *ptep, size_t cnt) 432 { 433 if (PMAP_NEEDS_PTE_SYNC) 434 cpu_dcache_wb_range((vaddr_t)ptep, cnt * sizeof(pt_entry_t)); 435 #if ARM_MMU_V7 > 0 436 __asm("dsb"); 437 #endif 438 } 439 440 #define PTE_SYNC(ptep) pmap_ptesync((ptep), 1) 441 #define PTE_SYNC_RANGE(ptep, cnt) pmap_ptesync((ptep), (cnt)) 442 443 #define l1pte_valid(pde) ((pde) != 0) 444 #define l1pte_section_p(pde) (((pde) & L1_TYPE_MASK) == L1_TYPE_S) 445 #define l1pte_supersection_p(pde) (l1pte_section_p(pde) \ 446 && ((pde) & L1_S_V6_SUPER) != 0) 447 #define l1pte_page_p(pde) (((pde) & L1_TYPE_MASK) == L1_TYPE_C) 448 #define l1pte_fpage_p(pde) (((pde) & L1_TYPE_MASK) == L1_TYPE_F) 449 450 #define l2pte_index(v) (((v) & L2_ADDR_BITS) >> L2_S_SHIFT) 451 #define l2pte_valid(pte) (((pte) & L2_TYPE_MASK) != L2_TYPE_INV) 452 #define l2pte_pa(pte) ((pte) & L2_S_FRAME) 453 #define l2pte_minidata(pte) (((pte) & \ 454 (L2_B | L2_C | L2_XS_T_TEX(TEX_XSCALE_X)))\ 455 == (L2_C | L2_XS_T_TEX(TEX_XSCALE_X))) 456 457 static inline void 458 l2pte_set(pt_entry_t *ptep, pt_entry_t pte, pt_entry_t opte) 459 { 460 KASSERT(*ptep == opte); 461 *ptep = pte; 462 for (vsize_t k = 1; k < PAGE_SIZE / L2_S_SIZE; k++) { 463 KASSERT(ptep[k] == opte ? opte + k * L2_S_SIZE : 0); 464 pte += L2_S_SIZE; 465 ptep[k] = pte; 466 } 467 } 468 469 static inline void 470 l2pte_reset(pt_entry_t *ptep) 471 { 472 *ptep = 0; 473 for (vsize_t k = 1; k < PAGE_SIZE / L2_S_SIZE; k++) { 474 ptep[k] = 0; 475 } 476 } 477 478 /* L1 and L2 page table macros */ 479 #define pmap_pde_v(pde) l1pte_valid(*(pde)) 480 #define pmap_pde_section(pde) l1pte_section_p(*(pde)) 481 #define pmap_pde_supersection(pde) l1pte_supersection_p(*(pde)) 482 #define pmap_pde_page(pde) l1pte_page_p(*(pde)) 483 #define pmap_pde_fpage(pde) l1pte_fpage_p(*(pde)) 484 485 #define pmap_pte_v(pte) l2pte_valid(*(pte)) 486 #define pmap_pte_pa(pte) l2pte_pa(*(pte)) 487 488 /* Size of the kernel part of the L1 page table */ 489 #define KERNEL_PD_SIZE \ 490 (L1_TABLE_SIZE - (KERNEL_BASE >> L1_S_SHIFT) * sizeof(pd_entry_t)) 491 492 void bzero_page(vaddr_t); 493 void bcopy_page(vaddr_t, vaddr_t); 494 495 #ifdef FPU_VFP 496 void bzero_page_vfp(vaddr_t); 497 void bcopy_page_vfp(vaddr_t, vaddr_t); 498 #endif 499 500 /************************* ARM MMU configuration *****************************/ 501 502 #if (ARM_MMU_GENERIC + ARM_MMU_SA1 + ARM_MMU_V6 + ARM_MMU_V7) != 0 503 void pmap_copy_page_generic(paddr_t, paddr_t); 504 void pmap_zero_page_generic(paddr_t); 505 506 void pmap_pte_init_generic(void); 507 #if defined(CPU_ARM8) 508 void pmap_pte_init_arm8(void); 509 #endif 510 #if defined(CPU_ARM9) 511 void pmap_pte_init_arm9(void); 512 #endif /* CPU_ARM9 */ 513 #if defined(CPU_ARM10) 514 void pmap_pte_init_arm10(void); 515 #endif /* CPU_ARM10 */ 516 #if defined(CPU_ARM11) /* ARM_MMU_V6 */ 517 void pmap_pte_init_arm11(void); 518 #endif /* CPU_ARM11 */ 519 #if defined(CPU_ARM11MPCORE) /* ARM_MMU_V6 */ 520 void pmap_pte_init_arm11mpcore(void); 521 #endif 522 #if ARM_MMU_V7 == 1 523 void pmap_pte_init_armv7(void); 524 #endif /* ARM_MMU_V7 */ 525 #endif /* (ARM_MMU_GENERIC + ARM_MMU_SA1) != 0 */ 526 527 #if ARM_MMU_SA1 == 1 528 void pmap_pte_init_sa1(void); 529 #endif /* ARM_MMU_SA1 == 1 */ 530 531 #if ARM_MMU_XSCALE == 1 532 void pmap_copy_page_xscale(paddr_t, paddr_t); 533 void pmap_zero_page_xscale(paddr_t); 534 535 void pmap_pte_init_xscale(void); 536 537 void xscale_setup_minidata(vaddr_t, vaddr_t, paddr_t); 538 539 #define PMAP_UAREA(va) pmap_uarea(va) 540 void pmap_uarea(vaddr_t); 541 #endif /* ARM_MMU_XSCALE == 1 */ 542 543 extern pt_entry_t pte_l1_s_cache_mode; 544 extern pt_entry_t pte_l1_s_cache_mask; 545 546 extern pt_entry_t pte_l2_l_cache_mode; 547 extern pt_entry_t pte_l2_l_cache_mask; 548 549 extern pt_entry_t pte_l2_s_cache_mode; 550 extern pt_entry_t pte_l2_s_cache_mask; 551 552 extern pt_entry_t pte_l1_s_cache_mode_pt; 553 extern pt_entry_t pte_l2_l_cache_mode_pt; 554 extern pt_entry_t pte_l2_s_cache_mode_pt; 555 556 extern pt_entry_t pte_l1_s_wc_mode; 557 extern pt_entry_t pte_l2_l_wc_mode; 558 extern pt_entry_t pte_l2_s_wc_mode; 559 560 extern pt_entry_t pte_l1_s_prot_u; 561 extern pt_entry_t pte_l1_s_prot_w; 562 extern pt_entry_t pte_l1_s_prot_ro; 563 extern pt_entry_t pte_l1_s_prot_mask; 564 565 extern pt_entry_t pte_l2_s_prot_u; 566 extern pt_entry_t pte_l2_s_prot_w; 567 extern pt_entry_t pte_l2_s_prot_ro; 568 extern pt_entry_t pte_l2_s_prot_mask; 569 570 extern pt_entry_t pte_l2_l_prot_u; 571 extern pt_entry_t pte_l2_l_prot_w; 572 extern pt_entry_t pte_l2_l_prot_ro; 573 extern pt_entry_t pte_l2_l_prot_mask; 574 575 extern pt_entry_t pte_l1_ss_proto; 576 extern pt_entry_t pte_l1_s_proto; 577 extern pt_entry_t pte_l1_c_proto; 578 extern pt_entry_t pte_l2_s_proto; 579 580 extern void (*pmap_copy_page_func)(paddr_t, paddr_t); 581 extern void (*pmap_zero_page_func)(paddr_t); 582 583 #endif /* !_LOCORE */ 584 585 /*****************************************************************************/ 586 587 /* 588 * Definitions for MMU domains 589 */ 590 #define PMAP_DOMAINS 15 /* 15 'user' domains (1-15) */ 591 #define PMAP_DOMAIN_KERNEL 0 /* The kernel uses domain #0 */ 592 593 /* 594 * These macros define the various bit masks in the PTE. 595 * 596 * We use these macros since we use different bits on different processor 597 * models. 598 */ 599 #define L1_S_PROT_U_generic (L1_S_AP(AP_U)) 600 #define L1_S_PROT_W_generic (L1_S_AP(AP_W)) 601 #define L1_S_PROT_RO_generic (0) 602 #define L1_S_PROT_MASK_generic (L1_S_PROT_U|L1_S_PROT_W|L1_S_PROT_RO) 603 604 #define L1_S_PROT_U_xscale (L1_S_AP(AP_U)) 605 #define L1_S_PROT_W_xscale (L1_S_AP(AP_W)) 606 #define L1_S_PROT_RO_xscale (0) 607 #define L1_S_PROT_MASK_xscale (L1_S_PROT_U|L1_S_PROT_W|L1_S_PROT_RO) 608 609 #define L1_S_PROT_U_armv6 (L1_S_AP(AP_R) | L1_S_AP(AP_U)) 610 #define L1_S_PROT_W_armv6 (L1_S_AP(AP_W)) 611 #define L1_S_PROT_RO_armv6 (L1_S_AP(AP_R) | L1_S_AP(AP_RO)) 612 #define L1_S_PROT_MASK_armv6 (L1_S_PROT_U|L1_S_PROT_W|L1_S_PROT_RO) 613 614 #define L1_S_PROT_U_armv7 (L1_S_AP(AP_R) | L1_S_AP(AP_U)) 615 #define L1_S_PROT_W_armv7 (L1_S_AP(AP_W)) 616 #define L1_S_PROT_RO_armv7 (L1_S_AP(AP_R) | L1_S_AP(AP_RO)) 617 #define L1_S_PROT_MASK_armv7 (L1_S_PROT_U|L1_S_PROT_W|L1_S_PROT_RO) 618 619 #define L1_S_CACHE_MASK_generic (L1_S_B|L1_S_C) 620 #define L1_S_CACHE_MASK_xscale (L1_S_B|L1_S_C|L1_S_XS_TEX(TEX_XSCALE_X)) 621 #define L1_S_CACHE_MASK_armv6 (L1_S_B|L1_S_C|L1_S_XS_TEX(TEX_ARMV6_TEX)) 622 #define L1_S_CACHE_MASK_armv7 (L1_S_B|L1_S_C|L1_S_XS_TEX(TEX_ARMV6_TEX)|L1_S_V6_S) 623 624 #define L2_L_PROT_U_generic (L2_AP(AP_U)) 625 #define L2_L_PROT_W_generic (L2_AP(AP_W)) 626 #define L2_L_PROT_RO_generic (0) 627 #define L2_L_PROT_MASK_generic (L2_L_PROT_U|L2_L_PROT_W|L2_L_PROT_RO) 628 629 #define L2_L_PROT_U_xscale (L2_AP(AP_U)) 630 #define L2_L_PROT_W_xscale (L2_AP(AP_W)) 631 #define L2_L_PROT_RO_xscale (0) 632 #define L2_L_PROT_MASK_xscale (L2_L_PROT_U|L2_L_PROT_W|L2_L_PROT_RO) 633 634 #define L2_L_PROT_U_armv6n (L2_AP0(AP_R) | L2_AP0(AP_U)) 635 #define L2_L_PROT_W_armv6n (L2_AP0(AP_W)) 636 #define L2_L_PROT_RO_armv6n (L2_AP0(AP_R) | L2_AP0(AP_RO)) 637 #define L2_L_PROT_MASK_armv6n (L2_L_PROT_U|L2_L_PROT_W|L2_L_PROT_RO) 638 639 #define L2_L_PROT_U_armv7 (L2_AP0(AP_R) | L2_AP0(AP_U)) 640 #define L2_L_PROT_W_armv7 (L2_AP0(AP_W)) 641 #define L2_L_PROT_RO_armv7 (L2_AP0(AP_R) | L2_AP0(AP_RO)) 642 #define L2_L_PROT_MASK_armv7 (L2_L_PROT_U|L2_L_PROT_W|L2_L_PROT_RO) 643 644 #define L2_L_CACHE_MASK_generic (L2_B|L2_C) 645 #define L2_L_CACHE_MASK_xscale (L2_B|L2_C|L2_XS_L_TEX(TEX_XSCALE_X)) 646 #define L2_L_CACHE_MASK_armv6 (L2_B|L2_C|L2_V6_L_TEX(TEX_ARMV6_TEX)) 647 #define L2_L_CACHE_MASK_armv7 (L2_B|L2_C|L2_V6_L_TEX(TEX_ARMV6_TEX)|L2_XS_S) 648 649 #define L2_S_PROT_U_generic (L2_AP(AP_U)) 650 #define L2_S_PROT_W_generic (L2_AP(AP_W)) 651 #define L2_S_PROT_RO_generic (0) 652 #define L2_S_PROT_MASK_generic (L2_S_PROT_U|L2_S_PROT_W|L2_S_PROT_RO) 653 654 #define L2_S_PROT_U_xscale (L2_AP0(AP_U)) 655 #define L2_S_PROT_W_xscale (L2_AP0(AP_W)) 656 #define L2_S_PROT_RO_xscale (0) 657 #define L2_S_PROT_MASK_xscale (L2_S_PROT_U|L2_S_PROT_W|L2_S_PROT_RO) 658 659 #define L2_S_PROT_U_armv6n (L2_AP0(AP_R) | L2_AP0(AP_U)) 660 #define L2_S_PROT_W_armv6n (L2_AP0(AP_W)) 661 #define L2_S_PROT_RO_armv6n (L2_AP0(AP_R) | L2_AP0(AP_RO)) 662 #define L2_S_PROT_MASK_armv6n (L2_S_PROT_U|L2_S_PROT_W|L2_S_PROT_RO) 663 664 #define L2_S_PROT_U_armv7 (L2_AP0(AP_R) | L2_AP0(AP_U)) 665 #define L2_S_PROT_W_armv7 (L2_AP0(AP_W)) 666 #define L2_S_PROT_RO_armv7 (L2_AP0(AP_R) | L2_AP0(AP_RO)) 667 #define L2_S_PROT_MASK_armv7 (L2_S_PROT_U|L2_S_PROT_W|L2_S_PROT_RO) 668 669 #define L2_S_CACHE_MASK_generic (L2_B|L2_C) 670 #define L2_S_CACHE_MASK_xscale (L2_B|L2_C|L2_XS_T_TEX(TEX_XSCALE_X)) 671 #define L2_XS_CACHE_MASK_armv6 (L2_B|L2_C|L2_V6_XS_TEX(TEX_ARMV6_TEX)) 672 #define L2_S_CACHE_MASK_armv6n L2_XS_CACHE_MASK_armv6 673 #ifdef ARMV6_EXTENDED_SMALL_PAGE 674 #define L2_S_CACHE_MASK_armv6c L2_XS_CACHE_MASK_armv6 675 #else 676 #define L2_S_CACHE_MASK_armv6c L2_S_CACHE_MASK_generic 677 #endif 678 #define L2_S_CACHE_MASK_armv7 (L2_B|L2_C|L2_V6_XS_TEX(TEX_ARMV6_TEX)|L2_XS_S) 679 680 681 #define L1_S_PROTO_generic (L1_TYPE_S | L1_S_IMP) 682 #define L1_S_PROTO_xscale (L1_TYPE_S) 683 #define L1_S_PROTO_armv6 (L1_TYPE_S) 684 #define L1_S_PROTO_armv7 (L1_TYPE_S) 685 686 #define L1_SS_PROTO_generic 0 687 #define L1_SS_PROTO_xscale 0 688 #define L1_SS_PROTO_armv6 (L1_TYPE_S | L1_S_V6_SS) 689 #define L1_SS_PROTO_armv7 (L1_TYPE_S | L1_S_V6_SS) 690 691 #define L1_C_PROTO_generic (L1_TYPE_C | L1_C_IMP2) 692 #define L1_C_PROTO_xscale (L1_TYPE_C) 693 #define L1_C_PROTO_armv6 (L1_TYPE_C) 694 #define L1_C_PROTO_armv7 (L1_TYPE_C) 695 696 #define L2_L_PROTO (L2_TYPE_L) 697 698 #define L2_S_PROTO_generic (L2_TYPE_S) 699 #define L2_S_PROTO_xscale (L2_TYPE_XS) 700 #ifdef ARMV6_EXTENDED_SMALL_PAGE 701 #define L2_S_PROTO_armv6c (L2_TYPE_XS) /* XP=0, extended small page */ 702 #else 703 #define L2_S_PROTO_armv6c (L2_TYPE_S) /* XP=0, subpage APs */ 704 #endif 705 #define L2_S_PROTO_armv6n (L2_TYPE_S) /* with XP=1 */ 706 #define L2_S_PROTO_armv7 (L2_TYPE_S) 707 708 /* 709 * User-visible names for the ones that vary with MMU class. 710 */ 711 712 #if ARM_NMMUS > 1 713 /* More than one MMU class configured; use variables. */ 714 #define L1_S_PROT_U pte_l1_s_prot_u 715 #define L1_S_PROT_W pte_l1_s_prot_w 716 #define L1_S_PROT_RO pte_l1_s_prot_ro 717 #define L1_S_PROT_MASK pte_l1_s_prot_mask 718 719 #define L2_S_PROT_U pte_l2_s_prot_u 720 #define L2_S_PROT_W pte_l2_s_prot_w 721 #define L2_S_PROT_RO pte_l2_s_prot_ro 722 #define L2_S_PROT_MASK pte_l2_s_prot_mask 723 724 #define L2_L_PROT_U pte_l2_l_prot_u 725 #define L2_L_PROT_W pte_l2_l_prot_w 726 #define L2_L_PROT_RO pte_l2_l_prot_ro 727 #define L2_L_PROT_MASK pte_l2_l_prot_mask 728 729 #define L1_S_CACHE_MASK pte_l1_s_cache_mask 730 #define L2_L_CACHE_MASK pte_l2_l_cache_mask 731 #define L2_S_CACHE_MASK pte_l2_s_cache_mask 732 733 #define L1_SS_PROTO pte_l1_ss_proto 734 #define L1_S_PROTO pte_l1_s_proto 735 #define L1_C_PROTO pte_l1_c_proto 736 #define L2_S_PROTO pte_l2_s_proto 737 738 #define pmap_copy_page(s, d) (*pmap_copy_page_func)((s), (d)) 739 #define pmap_zero_page(d) (*pmap_zero_page_func)((d)) 740 #elif (ARM_MMU_GENERIC + ARM_MMU_SA1) != 0 741 #define L1_S_PROT_U L1_S_PROT_U_generic 742 #define L1_S_PROT_W L1_S_PROT_W_generic 743 #define L1_S_PROT_RO L1_S_PROT_RO_generic 744 #define L1_S_PROT_MASK L1_S_PROT_MASK_generic 745 746 #define L2_S_PROT_U L2_S_PROT_U_generic 747 #define L2_S_PROT_W L2_S_PROT_W_generic 748 #define L2_S_PROT_RO L2_S_PROT_RO_generic 749 #define L2_S_PROT_MASK L2_S_PROT_MASK_generic 750 751 #define L2_L_PROT_U L2_L_PROT_U_generic 752 #define L2_L_PROT_W L2_L_PROT_W_generic 753 #define L2_L_PROT_RO L2_L_PROT_RO_generic 754 #define L2_L_PROT_MASK L2_L_PROT_MASK_generic 755 756 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_generic 757 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_generic 758 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_generic 759 760 #define L1_SS_PROTO L1_SS_PROTO_generic 761 #define L1_S_PROTO L1_S_PROTO_generic 762 #define L1_C_PROTO L1_C_PROTO_generic 763 #define L2_S_PROTO L2_S_PROTO_generic 764 765 #define pmap_copy_page(s, d) pmap_copy_page_generic((s), (d)) 766 #define pmap_zero_page(d) pmap_zero_page_generic((d)) 767 #elif ARM_MMU_V6N != 0 768 #define L1_S_PROT_U L1_S_PROT_U_armv6 769 #define L1_S_PROT_W L1_S_PROT_W_armv6 770 #define L1_S_PROT_RO L1_S_PROT_RO_armv6 771 #define L1_S_PROT_MASK L1_S_PROT_MASK_armv6 772 773 #define L2_S_PROT_U L2_S_PROT_U_armv6n 774 #define L2_S_PROT_W L2_S_PROT_W_armv6n 775 #define L2_S_PROT_RO L2_S_PROT_RO_armv6n 776 #define L2_S_PROT_MASK L2_S_PROT_MASK_armv6n 777 778 #define L2_L_PROT_U L2_L_PROT_U_armv6n 779 #define L2_L_PROT_W L2_L_PROT_W_armv6n 780 #define L2_L_PROT_RO L2_L_PROT_RO_armv6n 781 #define L2_L_PROT_MASK L2_L_PROT_MASK_armv6n 782 783 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_armv6 784 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_armv6 785 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_armv6n 786 787 /* These prototypes make writeable mappings, while the other MMU types 788 * make read-only mappings. */ 789 #define L1_SS_PROTO L1_SS_PROTO_armv6 790 #define L1_S_PROTO L1_S_PROTO_armv6 791 #define L1_C_PROTO L1_C_PROTO_armv6 792 #define L2_S_PROTO L2_S_PROTO_armv6n 793 794 #define pmap_copy_page(s, d) pmap_copy_page_generic((s), (d)) 795 #define pmap_zero_page(d) pmap_zero_page_generic((d)) 796 #elif ARM_MMU_V6C != 0 797 #define L1_S_PROT_U L1_S_PROT_U_generic 798 #define L1_S_PROT_W L1_S_PROT_W_generic 799 #define L1_S_PROT_RO L1_S_PROT_RO_generic 800 #define L1_S_PROT_MASK L1_S_PROT_MASK_generic 801 802 #define L2_S_PROT_U L2_S_PROT_U_generic 803 #define L2_S_PROT_W L2_S_PROT_W_generic 804 #define L2_S_PROT_RO L2_S_PROT_RO_generic 805 #define L2_S_PROT_MASK L2_S_PROT_MASK_generic 806 807 #define L2_L_PROT_U L2_L_PROT_U_generic 808 #define L2_L_PROT_W L2_L_PROT_W_generic 809 #define L2_L_PROT_RO L2_L_PROT_RO_generic 810 #define L2_L_PROT_MASK L2_L_PROT_MASK_generic 811 812 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_generic 813 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_generic 814 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_generic 815 816 #define L1_SS_PROTO L1_SS_PROTO_generic 817 #define L1_S_PROTO L1_S_PROTO_generic 818 #define L1_C_PROTO L1_C_PROTO_generic 819 #define L2_S_PROTO L2_S_PROTO_generic 820 821 #define pmap_copy_page(s, d) pmap_copy_page_generic((s), (d)) 822 #define pmap_zero_page(d) pmap_zero_page_generic((d)) 823 #elif ARM_MMU_XSCALE == 1 824 #define L1_S_PROT_U L1_S_PROT_U_generic 825 #define L1_S_PROT_W L1_S_PROT_W_generic 826 #define L1_S_PROT_RO L1_S_PROT_RO_generic 827 #define L1_S_PROT_MASK L1_S_PROT_MASK_generic 828 829 #define L2_S_PROT_U L2_S_PROT_U_xscale 830 #define L2_S_PROT_W L2_S_PROT_W_xscale 831 #define L2_S_PROT_RO L2_S_PROT_RO_xscale 832 #define L2_S_PROT_MASK L2_S_PROT_MASK_xscale 833 834 #define L2_L_PROT_U L2_L_PROT_U_generic 835 #define L2_L_PROT_W L2_L_PROT_W_generic 836 #define L2_L_PROT_RO L2_L_PROT_RO_generic 837 #define L2_L_PROT_MASK L2_L_PROT_MASK_generic 838 839 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_xscale 840 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_xscale 841 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_xscale 842 843 #define L1_SS_PROTO L1_SS_PROTO_xscale 844 #define L1_S_PROTO L1_S_PROTO_xscale 845 #define L1_C_PROTO L1_C_PROTO_xscale 846 #define L2_S_PROTO L2_S_PROTO_xscale 847 848 #define pmap_copy_page(s, d) pmap_copy_page_xscale((s), (d)) 849 #define pmap_zero_page(d) pmap_zero_page_xscale((d)) 850 #elif ARM_MMU_V7 == 1 851 #define L1_S_PROT_U L1_S_PROT_U_armv7 852 #define L1_S_PROT_W L1_S_PROT_W_armv7 853 #define L1_S_PROT_RO L1_S_PROT_RO_armv7 854 #define L1_S_PROT_MASK L1_S_PROT_MASK_armv7 855 856 #define L2_S_PROT_U L2_S_PROT_U_armv7 857 #define L2_S_PROT_W L2_S_PROT_W_armv7 858 #define L2_S_PROT_RO L2_S_PROT_RO_armv7 859 #define L2_S_PROT_MASK L2_S_PROT_MASK_armv7 860 861 #define L2_L_PROT_U L2_L_PROT_U_armv7 862 #define L2_L_PROT_W L2_L_PROT_W_armv7 863 #define L2_L_PROT_RO L2_L_PROT_RO_armv7 864 #define L2_L_PROT_MASK L2_L_PROT_MASK_armv7 865 866 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_armv7 867 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_armv7 868 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_armv7 869 870 /* These prototypes make writeable mappings, while the other MMU types 871 * make read-only mappings. */ 872 #define L1_SS_PROTO L1_SS_PROTO_armv7 873 #define L1_S_PROTO L1_S_PROTO_armv7 874 #define L1_C_PROTO L1_C_PROTO_armv7 875 #define L2_S_PROTO L2_S_PROTO_armv7 876 877 #define pmap_copy_page(s, d) pmap_copy_page_generic((s), (d)) 878 #define pmap_zero_page(d) pmap_zero_page_generic((d)) 879 #endif /* ARM_NMMUS > 1 */ 880 881 /* 882 * Macros to set and query the write permission on page descriptors. 883 */ 884 #define l1pte_set_writable(pte) (((pte) & ~L1_S_PROT_RO) | L1_S_PROT_W) 885 #define l1pte_set_readonly(pte) (((pte) & ~L1_S_PROT_W) | L1_S_PROT_RO) 886 #define l2pte_set_writable(pte) (((pte) & ~L2_S_PROT_RO) | L2_S_PROT_W) 887 #define l2pte_set_readonly(pte) (((pte) & ~L2_S_PROT_W) | L2_S_PROT_RO) 888 889 #define l2pte_writable_p(pte) (((pte) & L2_S_PROT_W) == L2_S_PROT_W && \ 890 (L2_S_PROT_RO == 0 || \ 891 ((pte) & L2_S_PROT_RO) != L2_S_PROT_RO)) 892 893 /* 894 * These macros return various bits based on kernel/user and protection. 895 * Note that the compiler will usually fold these at compile time. 896 */ 897 #define L1_S_PROT(ku, pr) ((((ku) == PTE_USER) ? L1_S_PROT_U : 0) | \ 898 (((pr) & VM_PROT_WRITE) ? L1_S_PROT_W : L1_S_PROT_RO)) 899 900 #define L2_L_PROT(ku, pr) ((((ku) == PTE_USER) ? L2_L_PROT_U : 0) | \ 901 (((pr) & VM_PROT_WRITE) ? L2_L_PROT_W : L2_L_PROT_RO)) 902 903 #define L2_S_PROT(ku, pr) ((((ku) == PTE_USER) ? L2_S_PROT_U : 0) | \ 904 (((pr) & VM_PROT_WRITE) ? L2_S_PROT_W : L2_S_PROT_RO)) 905 906 /* 907 * Macros to test if a mapping is mappable with an L1 SuperSection, 908 * L1 Section, or an L2 Large Page mapping. 909 */ 910 #define L1_SS_MAPPABLE_P(va, pa, size) \ 911 ((((va) | (pa)) & L1_SS_OFFSET) == 0 && (size) >= L1_SS_SIZE) 912 913 #define L1_S_MAPPABLE_P(va, pa, size) \ 914 ((((va) | (pa)) & L1_S_OFFSET) == 0 && (size) >= L1_S_SIZE) 915 916 #define L2_L_MAPPABLE_P(va, pa, size) \ 917 ((((va) | (pa)) & L2_L_OFFSET) == 0 && (size) >= L2_L_SIZE) 918 919 #ifndef _LOCORE 920 /* 921 * Hooks for the pool allocator. 922 */ 923 #define POOL_VTOPHYS(va) vtophys((vaddr_t) (va)) 924 extern paddr_t physical_start, physical_end; 925 #ifdef PMAP_NEED_ALLOC_POOLPAGE 926 struct vm_page *arm_pmap_alloc_poolpage(int); 927 #define PMAP_ALLOC_POOLPAGE arm_pmap_alloc_poolpage 928 #endif 929 #if defined(PMAP_NEED_ALLOC_POOLPAGE) || defined(__HAVE_MM_MD_DIRECT_MAPPED_PHYS) 930 #define PMAP_MAP_POOLPAGE(pa) \ 931 ((vaddr_t)((paddr_t)(pa) - physical_start + KERNEL_BASE)) 932 #define PMAP_UNMAP_POOLPAGE(va) \ 933 ((paddr_t)((vaddr_t)(va) - KERNEL_BASE + physical_start)) 934 #endif 935 936 /* 937 * pmap-specific data store in the vm_page structure. 938 */ 939 #define __HAVE_VM_PAGE_MD 940 struct vm_page_md { 941 SLIST_HEAD(,pv_entry) pvh_list; /* pv_entry list */ 942 int pvh_attrs; /* page attributes */ 943 u_int uro_mappings; 944 u_int urw_mappings; 945 union { 946 u_short s_mappings[2]; /* Assume kernel count <= 65535 */ 947 u_int i_mappings; 948 } k_u; 949 #define kro_mappings k_u.s_mappings[0] 950 #define krw_mappings k_u.s_mappings[1] 951 #define k_mappings k_u.i_mappings 952 }; 953 954 /* 955 * Set the default color of each page. 956 */ 957 #if ARM_MMU_V6 > 0 958 #define VM_MDPAGE_PVH_ATTRS_INIT(pg) \ 959 (pg)->mdpage.pvh_attrs = (pg)->phys_addr & arm_cache_prefer_mask 960 #else 961 #define VM_MDPAGE_PVH_ATTRS_INIT(pg) \ 962 (pg)->mdpage.pvh_attrs = 0 963 #endif 964 965 #define VM_MDPAGE_INIT(pg) \ 966 do { \ 967 SLIST_INIT(&(pg)->mdpage.pvh_list); \ 968 VM_MDPAGE_PVH_ATTRS_INIT(pg); \ 969 (pg)->mdpage.uro_mappings = 0; \ 970 (pg)->mdpage.urw_mappings = 0; \ 971 (pg)->mdpage.k_mappings = 0; \ 972 } while (/*CONSTCOND*/0) 973 974 #endif /* !_LOCORE */ 975 976 #endif /* _KERNEL */ 977 978 #endif /* _ARM32_PMAP_H_ */ 979
Indexes created Mon Sep 29 21:09:56 GMT 2025