pmap.h revision 1.88
1 /* $NetBSD: pmap.h,v 1.88 2008/08/13 06:05:54 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 #ifndef _LOCORE 126 127 struct l1_ttable; 128 struct l2_dtable; 129 130 /* 131 * Track cache/tlb occupancy using the following structure 132 */ 133 union pmap_cache_state { 134 struct { 135 union { 136 u_int8_t csu_cache_b[2]; 137 u_int16_t csu_cache; 138 } cs_cache_u; 139 140 union { 141 u_int8_t csu_tlb_b[2]; 142 u_int16_t csu_tlb; 143 } cs_tlb_u; 144 } cs_s; 145 u_int32_t cs_all; 146 }; 147 #define cs_cache_id cs_s.cs_cache_u.csu_cache_b[0] 148 #define cs_cache_d cs_s.cs_cache_u.csu_cache_b[1] 149 #define cs_cache cs_s.cs_cache_u.csu_cache 150 #define cs_tlb_id cs_s.cs_tlb_u.csu_tlb_b[0] 151 #define cs_tlb_d cs_s.cs_tlb_u.csu_tlb_b[1] 152 #define cs_tlb cs_s.cs_tlb_u.csu_tlb 153 154 /* 155 * Assigned to cs_all to force cacheops to work for a particular pmap 156 */ 157 #define PMAP_CACHE_STATE_ALL 0xffffffffu 158 159 /* 160 * This structure is used by machine-dependent code to describe 161 * static mappings of devices, created at bootstrap time. 162 */ 163 struct pmap_devmap { 164 vaddr_t pd_va; /* virtual address */ 165 paddr_t pd_pa; /* physical address */ 166 psize_t pd_size; /* size of region */ 167 vm_prot_t pd_prot; /* protection code */ 168 int pd_cache; /* cache attributes */ 169 }; 170 171 /* 172 * The pmap structure itself 173 */ 174 struct pmap { 175 u_int8_t pm_domain; 176 bool pm_remove_all; 177 bool pm_activated; 178 struct l1_ttable *pm_l1; 179 pd_entry_t *pm_pl1vec; 180 pd_entry_t pm_l1vec; 181 union pmap_cache_state pm_cstate; 182 struct uvm_object pm_obj; 183 #define pm_lock pm_obj.vmobjlock 184 struct l2_dtable *pm_l2[L2_SIZE]; 185 struct pmap_statistics pm_stats; 186 LIST_ENTRY(pmap) pm_list; 187 }; 188 189 typedef struct pmap *pmap_t; 190 191 /* 192 * Physical / virtual address structure. In a number of places (particularly 193 * during bootstrapping) we need to keep track of the physical and virtual 194 * addresses of various pages 195 */ 196 typedef struct pv_addr { 197 SLIST_ENTRY(pv_addr) pv_list; 198 paddr_t pv_pa; 199 vaddr_t pv_va; 200 vsize_t pv_size; 201 } pv_addr_t; 202 typedef SLIST_HEAD(, pv_addr) pv_addrqh_t; 203 204 extern pv_addrqh_t pmap_freeq; 205 extern pv_addr_t kernelpages; 206 extern pv_addr_t systempage; 207 extern pv_addr_t kernel_l1pt; 208 209 /* 210 * Determine various modes for PTEs (user vs. kernel, cacheable 211 * vs. non-cacheable). 212 */ 213 #define PTE_KERNEL 0 214 #define PTE_USER 1 215 #define PTE_NOCACHE 0 216 #define PTE_CACHE 1 217 #define PTE_PAGETABLE 2 218 219 /* 220 * Flags that indicate attributes of pages or mappings of pages. 221 * 222 * The PVF_MOD and PVF_REF flags are stored in the mdpage for each 223 * page. PVF_WIRED, PVF_WRITE, and PVF_NC are kept in individual 224 * pv_entry's for each page. They live in the same "namespace" so 225 * that we can clear multiple attributes at a time. 226 * 227 * Note the "non-cacheable" flag generally means the page has 228 * multiple mappings in a given address space. 229 */ 230 #define PVF_MOD 0x01 /* page is modified */ 231 #define PVF_REF 0x02 /* page is referenced */ 232 #define PVF_WIRED 0x04 /* mapping is wired */ 233 #define PVF_WRITE 0x08 /* mapping is writable */ 234 #define PVF_EXEC 0x10 /* mapping is executable */ 235 #define PVF_UNC 0x20 /* mapping is 'user' non-cacheable */ 236 #define PVF_KNC 0x40 /* mapping is 'kernel' non-cacheable */ 237 #define PVF_COLORED 0x80 /* page has or had a color */ 238 #define PVF_KENTRY 0x0100 /* page entered via pmap_kenter_pa */ 239 #define PVF_KMPAGE 0x0200 /* page is used for kmem */ 240 #define PVF_DIRTY 0x0400 /* page may have dirty cache lines */ 241 #define PVF_KMOD 0x0800 /* unmanaged page is modified */ 242 #define PVF_KWRITE (PVF_KENTRY|PVF_WRITE) 243 #define PVF_DMOD (PVF_MOD|PVF_KMOD|PVF_KMPAGE) 244 #define PVF_NC (PVF_UNC|PVF_KNC) 245 246 /* 247 * Commonly referenced structures 248 */ 249 extern struct pmap kernel_pmap_store; 250 extern int pmap_debug_level; /* Only exists if PMAP_DEBUG */ 251 252 /* 253 * Macros that we need to export 254 */ 255 #define pmap_kernel() (&kernel_pmap_store) 256 #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) 257 #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count) 258 259 #define pmap_remove(pmap,sva,eva) pmap_do_remove((pmap),(sva),(eva),0) 260 261 #define pmap_is_modified(pg) \ 262 (((pg)->mdpage.pvh_attrs & PVF_MOD) != 0) 263 #define pmap_is_referenced(pg) \ 264 (((pg)->mdpage.pvh_attrs & PVF_REF) != 0) 265 #define pmap_is_page_colored_p(pg) \ 266 (((pg)->mdpage.pvh_attrs & PVF_COLORED) != 0) 267 268 #define pmap_copy(dp, sp, da, l, sa) /* nothing */ 269 270 #define pmap_phys_address(ppn) (arm_ptob((ppn))) 271 272 /* 273 * Functions that we need to export 274 */ 275 void pmap_procwr(struct proc *, vaddr_t, int); 276 void pmap_remove_all(pmap_t); 277 bool pmap_extract(pmap_t, vaddr_t, paddr_t *); 278 279 #define PMAP_NEED_PROCWR 280 #define PMAP_GROWKERNEL /* turn on pmap_growkernel interface */ 281 #define PMAP_KMPAGE 0x00000040 /* Make uvm tell us when it allocates 282 a page to be used for kernel memory */ 283 284 285 #if ARM_MMU_V6 > 0 286 #define PMAP_PREFER(hint, vap, sz, td) pmap_prefer((hint), (vap), (td)) 287 void pmap_prefer(vaddr_t, vaddr_t *, int); 288 #endif 289 290 void pmap_icache_sync_range(pmap_t, vaddr_t, vaddr_t); 291 292 /* Functions we use internally. */ 293 #ifdef PMAP_STEAL_MEMORY 294 void pmap_boot_pagealloc(psize_t, psize_t, psize_t, pv_addr_t *); 295 void pmap_boot_pageadd(pv_addr_t *); 296 vaddr_t pmap_steal_memory(vsize_t, vaddr_t *, vaddr_t *); 297 #endif 298 void pmap_bootstrap(vaddr_t, vaddr_t); 299 300 void pmap_do_remove(pmap_t, vaddr_t, vaddr_t, int); 301 int pmap_fault_fixup(pmap_t, vaddr_t, vm_prot_t, int); 302 bool pmap_get_pde_pte(pmap_t, vaddr_t, pd_entry_t **, pt_entry_t **); 303 bool pmap_get_pde(pmap_t, vaddr_t, pd_entry_t **); 304 void pmap_set_pcb_pagedir(pmap_t, struct pcb *); 305 306 void pmap_debug(int); 307 void pmap_postinit(void); 308 309 void vector_page_setprot(int); 310 311 const struct pmap_devmap *pmap_devmap_find_pa(paddr_t, psize_t); 312 const struct pmap_devmap *pmap_devmap_find_va(vaddr_t, vsize_t); 313 314 /* Bootstrapping routines. */ 315 void pmap_map_section(vaddr_t, vaddr_t, paddr_t, int, int); 316 void pmap_map_entry(vaddr_t, vaddr_t, paddr_t, int, int); 317 vsize_t pmap_map_chunk(vaddr_t, vaddr_t, paddr_t, vsize_t, int, int); 318 void pmap_link_l2pt(vaddr_t, vaddr_t, pv_addr_t *); 319 void pmap_devmap_bootstrap(vaddr_t, const struct pmap_devmap *); 320 void pmap_devmap_register(const struct pmap_devmap *); 321 322 /* 323 * Special page zero routine for use by the idle loop (no cache cleans). 324 */ 325 bool pmap_pageidlezero(paddr_t); 326 #define PMAP_PAGEIDLEZERO(pa) pmap_pageidlezero((pa)) 327 328 /* 329 * used by dumpsys to record the PA of the L1 table 330 */ 331 uint32_t pmap_kernel_L1_addr(void); 332 /* 333 * The current top of kernel VM 334 */ 335 extern vaddr_t pmap_curmaxkvaddr; 336 337 /* 338 * Useful macros and constants 339 */ 340 341 /* Virtual address to page table entry */ 342 static inline pt_entry_t * 343 vtopte(vaddr_t va) 344 { 345 pd_entry_t *pdep; 346 pt_entry_t *ptep; 347 348 if (pmap_get_pde_pte(pmap_kernel(), va, &pdep, &ptep) == false) 349 return (NULL); 350 return (ptep); 351 } 352 353 /* 354 * Virtual address to physical address 355 */ 356 static inline paddr_t 357 vtophys(vaddr_t va) 358 { 359 paddr_t pa; 360 361 if (pmap_extract(pmap_kernel(), va, &pa) == false) 362 return (0); /* XXXSCW: Panic? */ 363 364 return (pa); 365 } 366 367 /* 368 * The new pmap ensures that page-tables are always mapping Write-Thru. 369 * Thus, on some platforms we can run fast and loose and avoid syncing PTEs 370 * on every change. 371 * 372 * Unfortunately, not all CPUs have a write-through cache mode. So we 373 * define PMAP_NEEDS_PTE_SYNC for C code to conditionally do PTE syncs, 374 * and if there is the chance for PTE syncs to be needed, we define 375 * PMAP_INCLUDE_PTE_SYNC so e.g. assembly code can include (and run) 376 * the code. 377 */ 378 extern int pmap_needs_pte_sync; 379 #if defined(_KERNEL_OPT) 380 /* 381 * StrongARM SA-1 caches do not have a write-through mode. So, on these, 382 * we need to do PTE syncs. If only SA-1 is configured, then evaluate 383 * this at compile time. 384 */ 385 #if (ARM_MMU_SA1 + ARM_MMU_V6 != 0) && (ARM_NMMUS == 1) 386 #define PMAP_NEEDS_PTE_SYNC 1 387 #define PMAP_INCLUDE_PTE_SYNC 388 #elif (ARM_MMU_SA1 == 0) 389 #define PMAP_NEEDS_PTE_SYNC 0 390 #endif 391 #endif /* _KERNEL_OPT */ 392 393 /* 394 * Provide a fallback in case we were not able to determine it at 395 * compile-time. 396 */ 397 #ifndef PMAP_NEEDS_PTE_SYNC 398 #define PMAP_NEEDS_PTE_SYNC pmap_needs_pte_sync 399 #define PMAP_INCLUDE_PTE_SYNC 400 #endif 401 402 #define PTE_SYNC(pte) \ 403 do { \ 404 if (PMAP_NEEDS_PTE_SYNC) \ 405 cpu_dcache_wb_range((vaddr_t)(pte), sizeof(pt_entry_t));\ 406 } while (/*CONSTCOND*/0) 407 408 #define PTE_SYNC_RANGE(pte, cnt) \ 409 do { \ 410 if (PMAP_NEEDS_PTE_SYNC) { \ 411 cpu_dcache_wb_range((vaddr_t)(pte), \ 412 (cnt) << 2); /* * sizeof(pt_entry_t) */ \ 413 } \ 414 } while (/*CONSTCOND*/0) 415 416 #define l1pte_valid(pde) ((pde) != 0) 417 #define l1pte_section_p(pde) (((pde) & L1_TYPE_MASK) == L1_TYPE_S) 418 #define l1pte_page_p(pde) (((pde) & L1_TYPE_MASK) == L1_TYPE_C) 419 #define l1pte_fpage_p(pde) (((pde) & L1_TYPE_MASK) == L1_TYPE_F) 420 421 #define l2pte_index(v) (((v) & L2_ADDR_BITS) >> L2_S_SHIFT) 422 #define l2pte_valid(pte) (((pte) & L2_TYPE_MASK) != L2_TYPE_INV) 423 #define l2pte_pa(pte) ((pte) & L2_S_FRAME) 424 #define l2pte_minidata(pte) (((pte) & \ 425 (L2_B | L2_C | L2_XS_T_TEX(TEX_XSCALE_X)))\ 426 == (L2_C | L2_XS_T_TEX(TEX_XSCALE_X))) 427 428 /* L1 and L2 page table macros */ 429 #define pmap_pde_v(pde) l1pte_valid(*(pde)) 430 #define pmap_pde_section(pde) l1pte_section_p(*(pde)) 431 #define pmap_pde_page(pde) l1pte_page_p(*(pde)) 432 #define pmap_pde_fpage(pde) l1pte_fpage_p(*(pde)) 433 434 #define pmap_pte_v(pte) l2pte_valid(*(pte)) 435 #define pmap_pte_pa(pte) l2pte_pa(*(pte)) 436 437 /* Size of the kernel part of the L1 page table */ 438 #define KERNEL_PD_SIZE \ 439 (L1_TABLE_SIZE - (KERNEL_BASE >> L1_S_SHIFT) * sizeof(pd_entry_t)) 440 441 /************************* ARM MMU configuration *****************************/ 442 443 #if (ARM_MMU_GENERIC + ARM_MMU_SA1 + ARM_MMU_V6) != 0 444 void pmap_copy_page_generic(paddr_t, paddr_t); 445 void pmap_zero_page_generic(paddr_t); 446 447 void pmap_pte_init_generic(void); 448 #if defined(CPU_ARM8) 449 void pmap_pte_init_arm8(void); 450 #endif 451 #if defined(CPU_ARM9) 452 void pmap_pte_init_arm9(void); 453 #endif /* CPU_ARM9 */ 454 #if defined(CPU_ARM10) 455 void pmap_pte_init_arm10(void); 456 #endif /* CPU_ARM10 */ 457 #endif /* (ARM_MMU_GENERIC + ARM_MMU_SA1) != 0 */ 458 459 #if ARM_MMU_SA1 == 1 460 void pmap_pte_init_sa1(void); 461 #endif /* ARM_MMU_SA1 == 1 */ 462 463 #if ARM_MMU_XSCALE == 1 464 void pmap_copy_page_xscale(paddr_t, paddr_t); 465 void pmap_zero_page_xscale(paddr_t); 466 467 void pmap_pte_init_xscale(void); 468 469 void xscale_setup_minidata(vaddr_t, vaddr_t, paddr_t); 470 471 #define PMAP_UAREA(va) pmap_uarea(va) 472 void pmap_uarea(vaddr_t); 473 #endif /* ARM_MMU_XSCALE == 1 */ 474 475 extern pt_entry_t pte_l1_s_cache_mode; 476 extern pt_entry_t pte_l1_s_cache_mask; 477 478 extern pt_entry_t pte_l2_l_cache_mode; 479 extern pt_entry_t pte_l2_l_cache_mask; 480 481 extern pt_entry_t pte_l2_s_cache_mode; 482 extern pt_entry_t pte_l2_s_cache_mask; 483 484 extern pt_entry_t pte_l1_s_cache_mode_pt; 485 extern pt_entry_t pte_l2_l_cache_mode_pt; 486 extern pt_entry_t pte_l2_s_cache_mode_pt; 487 488 extern pt_entry_t pte_l2_s_prot_u; 489 extern pt_entry_t pte_l2_s_prot_w; 490 extern pt_entry_t pte_l2_s_prot_mask; 491 492 extern pt_entry_t pte_l1_s_proto; 493 extern pt_entry_t pte_l1_c_proto; 494 extern pt_entry_t pte_l2_s_proto; 495 496 extern void (*pmap_copy_page_func)(paddr_t, paddr_t); 497 extern void (*pmap_zero_page_func)(paddr_t); 498 499 #endif /* !_LOCORE */ 500 501 /*****************************************************************************/ 502 503 /* 504 * tell MI code that the cache is virtually-indexed. 505 * ARMv6 is physically-tagged but all others are virtually-tagged. 506 */ 507 #if ARM_MMU_V6 > 0 508 #define PMAP_CACHE_VIPT 509 #else 510 #define PMAP_CACHE_VIVT 511 #endif 512 513 /* 514 * Definitions for MMU domains 515 */ 516 #define PMAP_DOMAINS 15 /* 15 'user' domains (0-14) */ 517 #define PMAP_DOMAIN_KERNEL 15 /* The kernel uses domain #15 */ 518 519 /* 520 * These macros define the various bit masks in the PTE. 521 * 522 * We use these macros since we use different bits on different processor 523 * models. 524 */ 525 #define L1_S_PROT_U (L1_S_AP(AP_U)) 526 #define L1_S_PROT_W (L1_S_AP(AP_W)) 527 #define L1_S_PROT_MASK (L1_S_PROT_U|L1_S_PROT_W) 528 529 #define L1_S_CACHE_MASK_generic (L1_S_B|L1_S_C) 530 #define L1_S_CACHE_MASK_xscale (L1_S_B|L1_S_C|L1_S_XS_TEX(TEX_XSCALE_X)) 531 532 #define L2_L_PROT_U (L2_AP(AP_U)) 533 #define L2_L_PROT_W (L2_AP(AP_W)) 534 #define L2_L_PROT_MASK (L2_L_PROT_U|L2_L_PROT_W) 535 536 #define L2_L_CACHE_MASK_generic (L2_B|L2_C) 537 #define L2_L_CACHE_MASK_xscale (L2_B|L2_C|L2_XS_L_TEX(TEX_XSCALE_X)) 538 539 #define L2_S_PROT_U_generic (L2_AP(AP_U)) 540 #define L2_S_PROT_W_generic (L2_AP(AP_W)) 541 #define L2_S_PROT_MASK_generic (L2_S_PROT_U|L2_S_PROT_W) 542 543 #define L2_S_PROT_U_xscale (L2_AP0(AP_U)) 544 #define L2_S_PROT_W_xscale (L2_AP0(AP_W)) 545 #define L2_S_PROT_MASK_xscale (L2_S_PROT_U|L2_S_PROT_W) 546 547 #define L2_S_CACHE_MASK_generic (L2_B|L2_C) 548 #define L2_S_CACHE_MASK_xscale (L2_B|L2_C|L2_XS_T_TEX(TEX_XSCALE_X)) 549 550 #define L1_S_PROTO_generic (L1_TYPE_S | L1_S_IMP) 551 #define L1_S_PROTO_xscale (L1_TYPE_S) 552 553 #define L1_C_PROTO_generic (L1_TYPE_C | L1_C_IMP2) 554 #define L1_C_PROTO_xscale (L1_TYPE_C) 555 556 #define L2_L_PROTO (L2_TYPE_L) 557 558 #define L2_S_PROTO_generic (L2_TYPE_S) 559 #define L2_S_PROTO_xscale (L2_TYPE_XS) 560 561 /* 562 * User-visible names for the ones that vary with MMU class. 563 */ 564 565 #if ARM_NMMUS > 1 566 /* More than one MMU class configured; use variables. */ 567 #define L2_S_PROT_U pte_l2_s_prot_u 568 #define L2_S_PROT_W pte_l2_s_prot_w 569 #define L2_S_PROT_MASK pte_l2_s_prot_mask 570 571 #define L1_S_CACHE_MASK pte_l1_s_cache_mask 572 #define L2_L_CACHE_MASK pte_l2_l_cache_mask 573 #define L2_S_CACHE_MASK pte_l2_s_cache_mask 574 575 #define L1_S_PROTO pte_l1_s_proto 576 #define L1_C_PROTO pte_l1_c_proto 577 #define L2_S_PROTO pte_l2_s_proto 578 579 #define pmap_copy_page(s, d) (*pmap_copy_page_func)((s), (d)) 580 #define pmap_zero_page(d) (*pmap_zero_page_func)((d)) 581 #elif (ARM_MMU_GENERIC + ARM_MMU_SA1 + ARM_MMU_V6) != 0 582 #define L2_S_PROT_U L2_S_PROT_U_generic 583 #define L2_S_PROT_W L2_S_PROT_W_generic 584 #define L2_S_PROT_MASK L2_S_PROT_MASK_generic 585 586 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_generic 587 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_generic 588 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_generic 589 590 #define L1_S_PROTO L1_S_PROTO_generic 591 #define L1_C_PROTO L1_C_PROTO_generic 592 #define L2_S_PROTO L2_S_PROTO_generic 593 594 #define pmap_copy_page(s, d) pmap_copy_page_generic((s), (d)) 595 #define pmap_zero_page(d) pmap_zero_page_generic((d)) 596 #elif ARM_MMU_XSCALE == 1 597 #define L2_S_PROT_U L2_S_PROT_U_xscale 598 #define L2_S_PROT_W L2_S_PROT_W_xscale 599 #define L2_S_PROT_MASK L2_S_PROT_MASK_xscale 600 601 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_xscale 602 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_xscale 603 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_xscale 604 605 #define L1_S_PROTO L1_S_PROTO_xscale 606 #define L1_C_PROTO L1_C_PROTO_xscale 607 #define L2_S_PROTO L2_S_PROTO_xscale 608 609 #define pmap_copy_page(s, d) pmap_copy_page_xscale((s), (d)) 610 #define pmap_zero_page(d) pmap_zero_page_xscale((d)) 611 #endif /* ARM_NMMUS > 1 */ 612 613 /* 614 * These macros return various bits based on kernel/user and protection. 615 * Note that the compiler will usually fold these at compile time. 616 */ 617 #define L1_S_PROT(ku, pr) ((((ku) == PTE_USER) ? L1_S_PROT_U : 0) | \ 618 (((pr) & VM_PROT_WRITE) ? L1_S_PROT_W : 0)) 619 620 #define L2_L_PROT(ku, pr) ((((ku) == PTE_USER) ? L2_L_PROT_U : 0) | \ 621 (((pr) & VM_PROT_WRITE) ? L2_L_PROT_W : 0)) 622 623 #define L2_S_PROT(ku, pr) ((((ku) == PTE_USER) ? L2_S_PROT_U : 0) | \ 624 (((pr) & VM_PROT_WRITE) ? L2_S_PROT_W : 0)) 625 626 /* 627 * Macros to test if a mapping is mappable with an L1 Section mapping 628 * or an L2 Large Page mapping. 629 */ 630 #define L1_S_MAPPABLE_P(va, pa, size) \ 631 ((((va) | (pa)) & L1_S_OFFSET) == 0 && (size) >= L1_S_SIZE) 632 633 #define L2_L_MAPPABLE_P(va, pa, size) \ 634 ((((va) | (pa)) & L2_L_OFFSET) == 0 && (size) >= L2_L_SIZE) 635 636 /* 637 * Hooks for the pool allocator. 638 */ 639 #define POOL_VTOPHYS(va) vtophys((vaddr_t) (va)) 640 641 #endif /* _KERNEL */ 642 643 #endif /* _ARM32_PMAP_H_ */ 644
Indexes created Mon Sep 29 21:09:56 GMT 2025