pmap.h revision 1.71
1 /* $NetBSD: pmap.h,v 1.71 2003/05/03 03:49:04 thorpej 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/cpufunc.h> 75 #include <arm/arm32/pte.h> 76 #include <uvm/uvm_object.h> 77 78 /* 79 * a pmap describes a processes' 4GB virtual address space. this 80 * virtual address space can be broken up into 4096 1MB regions which 81 * are described by L1 PTEs in the L1 table. 82 * 83 * There is a line drawn at KERNEL_BASE. Everything below that line 84 * changes when the VM context is switched. Everything above that line 85 * is the same no matter which VM context is running. This is achieved 86 * by making the L1 PTEs for those slots above KERNEL_BASE reference 87 * kernel L2 tables. 88 * 89 *#ifndef ARM32_PMAP_NEW 90 * The L2 tables are mapped linearly starting at PTE_BASE. PTE_BASE 91 * is below KERNEL_BASE, which means that the current process's PTEs 92 * are always available starting at PTE_BASE. Another region of KVA 93 * above KERNEL_BASE, APTE_BASE, is reserved for mapping in the PTEs 94 * of another process, should we need to manipulate them. 95 *#endif 96 * 97 * The basic layout of the virtual address space thus looks like this: 98 * 99 * 0xffffffff 100 * . 101 * . 102 * . 103 * KERNEL_BASE 104 * -------------------- 105 *#ifndef ARM32_PMAP_NEW 106 * PTE_BASE 107 *#endif 108 * . 109 * . 110 * . 111 * 0x00000000 112 */ 113 114 #ifdef ARM32_PMAP_NEW 115 /* 116 * The number of L2 descriptor tables which can be tracked by an l2_dtable. 117 * A bucket size of 16 provides for 16MB of contiguous virtual address 118 * space per l2_dtable. Most processes will, therefore, require only two or 119 * three of these to map their whole working set. 120 */ 121 #define L2_BUCKET_LOG2 4 122 #define L2_BUCKET_SIZE (1 << L2_BUCKET_LOG2) 123 124 /* 125 * Given the above "L2-descriptors-per-l2_dtable" constant, the number 126 * of l2_dtable structures required to track all possible page descriptors 127 * mappable by an L1 translation table is given by the following constants: 128 */ 129 #define L2_LOG2 ((32 - L1_S_SHIFT) - L2_BUCKET_LOG2) 130 #define L2_SIZE (1 << L2_LOG2) 131 132 struct l1_ttable; 133 struct l2_dtable; 134 135 /* 136 * Track cache/tlb occupancy using the following structure 137 */ 138 union pmap_cache_state { 139 struct { 140 union { 141 u_int8_t csu_cache_b[2]; 142 u_int16_t csu_cache; 143 } cs_cache_u; 144 145 union { 146 u_int8_t csu_tlb_b[2]; 147 u_int16_t csu_tlb; 148 } cs_tlb_u; 149 } cs_s; 150 u_int32_t cs_all; 151 }; 152 #define cs_cache_id cs_s.cs_cache_u.csu_cache_b[0] 153 #define cs_cache_d cs_s.cs_cache_u.csu_cache_b[1] 154 #define cs_cache cs_s.cs_cache_u.csu_cache 155 #define cs_tlb_id cs_s.cs_tlb_u.csu_tlb_b[0] 156 #define cs_tlb_d cs_s.cs_tlb_u.csu_tlb_b[1] 157 #define cs_tlb cs_s.cs_tlb_u.csu_tlb 158 159 /* 160 * Assigned to cs_all to force cacheops to work for a particular pmap 161 */ 162 #define PMAP_CACHE_STATE_ALL 0xffffffffu 163 164 /* 165 * The pmap structure itself 166 */ 167 struct pmap { 168 u_int8_t pm_domain; 169 boolean_t pm_remove_all; 170 struct l1_ttable *pm_l1; 171 union pmap_cache_state pm_cstate; 172 struct uvm_object pm_obj; 173 #define pm_lock pm_obj.vmobjlock 174 struct l2_dtable *pm_l2[L2_SIZE]; 175 struct pmap_statistics pm_stats; 176 LIST_ENTRY(pmap) pm_list; 177 }; 178 179 #else /* !ARM32_PMAP_NEW */ 180 181 /* 182 * The pmap structure itself. 183 */ 184 struct pmap { 185 struct uvm_object pm_obj; /* uvm_object */ 186 #define pm_lock pm_obj.vmobjlock 187 LIST_ENTRY(pmap) pm_list; /* list (lck by pm_list lock) */ 188 pd_entry_t *pm_pdir; /* KVA of page directory */ 189 struct l1pt *pm_l1pt; /* L1 table metadata */ 190 paddr_t pm_pptpt; /* PA of pt's page table */ 191 vaddr_t pm_vptpt; /* VA of pt's page table */ 192 struct pmap_statistics pm_stats; /* pmap statistics */ 193 struct vm_page *pm_ptphint; /* recently used PT */ 194 }; 195 #endif /* ARM32_PMAP_NEW */ 196 197 typedef struct pmap *pmap_t; 198 199 /* 200 * Physical / virtual address structure. In a number of places (particularly 201 * during bootstrapping) we need to keep track of the physical and virtual 202 * addresses of various pages 203 */ 204 typedef struct pv_addr { 205 SLIST_ENTRY(pv_addr) pv_list; 206 paddr_t pv_pa; 207 vaddr_t pv_va; 208 } pv_addr_t; 209 210 /* 211 * Determine various modes for PTEs (user vs. kernel, cacheable 212 * vs. non-cacheable). 213 */ 214 #define PTE_KERNEL 0 215 #define PTE_USER 1 216 #define PTE_NOCACHE 0 217 #define PTE_CACHE 1 218 #ifdef ARM32_PMAP_NEW 219 #define PTE_PAGETABLE 2 220 #endif 221 222 /* 223 * Flags that indicate attributes of pages or mappings of pages. 224 * 225 * The PVF_MOD and PVF_REF flags are stored in the mdpage for each 226 * page. PVF_WIRED, PVF_WRITE, and PVF_NC are kept in individual 227 * pv_entry's for each page. They live in the same "namespace" so 228 * that we can clear multiple attributes at a time. 229 * 230 * Note the "non-cacheable" flag generally means the page has 231 * multiple mappings in a given address space. 232 */ 233 #define PVF_MOD 0x01 /* page is modified */ 234 #define PVF_REF 0x02 /* page is referenced */ 235 #define PVF_WIRED 0x04 /* mapping is wired */ 236 #define PVF_WRITE 0x08 /* mapping is writable */ 237 #define PVF_EXEC 0x10 /* mapping is executable */ 238 #ifndef ARM32_PMAP_NEW 239 #define PVF_NC 0x20 /* mapping is non-cacheable */ 240 #else 241 #define PVF_UNC 0x20 /* mapping is 'user' non-cacheable */ 242 #define PVF_KNC 0x40 /* mapping is 'kernel' non-cacheable */ 243 #define PVF_NC (PVF_UNC|PVF_KNC) 244 #endif 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_is_modified(pg) \ 260 (((pg)->mdpage.pvh_attrs & PVF_MOD) != 0) 261 #define pmap_is_referenced(pg) \ 262 (((pg)->mdpage.pvh_attrs & PVF_REF) != 0) 263 264 #define pmap_copy(dp, sp, da, l, sa) /* nothing */ 265 266 #ifndef ARM32_PMAP_NEW 267 /* ARGSUSED */ 268 static __inline void 269 pmap_remove_all(struct pmap *pmap) 270 { 271 /* Nothing. */ 272 } 273 #endif 274 275 #define pmap_phys_address(ppn) (arm_ptob((ppn))) 276 277 /* 278 * Functions that we need to export 279 */ 280 void pmap_procwr(struct proc *, vaddr_t, int); 281 #ifdef ARM32_PMAP_NEW 282 void pmap_remove_all(pmap_t); 283 boolean_t pmap_extract(pmap_t, vaddr_t, paddr_t *); 284 #endif 285 286 #define PMAP_NEED_PROCWR 287 #define PMAP_GROWKERNEL /* turn on pmap_growkernel interface */ 288 289 /* Functions we use internally. */ 290 #ifndef ARM32_PMAP_NEW 291 /* 292 * Old pmap 293 */ 294 void pmap_bootstrap(pd_entry_t *, pv_addr_t); 295 int pmap_handled_emulation(struct pmap *, vaddr_t); 296 int pmap_modified_emulation(struct pmap *, vaddr_t); 297 #else 298 /* 299 * New pmap 300 */ 301 void pmap_bootstrap(pd_entry_t *, vaddr_t, vaddr_t); 302 303 int pmap_fault_fixup(pmap_t, vaddr_t, vm_prot_t, int); 304 boolean_t pmap_get_pde_pte(pmap_t, vaddr_t, pd_entry_t **, pt_entry_t **); 305 boolean_t pmap_get_pde(pmap_t, vaddr_t, pd_entry_t **); 306 void pmap_set_pcb_pagedir(pmap_t, struct pcb *); 307 #endif /* ARM32_PMAP_NEW */ 308 309 void pmap_debug(int); 310 void pmap_postinit(void); 311 312 void vector_page_setprot(int); 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 *); 319 320 /* 321 * Special page zero routine for use by the idle loop (no cache cleans). 322 */ 323 boolean_t pmap_pageidlezero(paddr_t); 324 #define PMAP_PAGEIDLEZERO(pa) pmap_pageidlezero((pa)) 325 326 /* 327 * The current top of kernel VM 328 */ 329 extern vaddr_t pmap_curmaxkvaddr; 330 331 /* 332 * Useful macros and constants 333 */ 334 335 #ifndef ARM32_PMAP_NEW 336 /* 337 * While the ARM MMU's L1 descriptors describe a 1M "section", each 338 * one pointing to a 1K L2 table, NetBSD's VM system allocates the 339 * page tables in 4K chunks, and thus we describe 4M "super sections". 340 * 341 * We'll lift terminology from another architecture and refer to this as 342 * the "page directory" size. 343 */ 344 #define PD_SIZE (L1_S_SIZE * 4) /* 4M */ 345 #define PD_OFFSET (PD_SIZE - 1) 346 #define PD_FRAME (~PD_OFFSET) 347 #define PD_SHIFT 22 348 349 /* Virtual address to page table entry */ 350 #define vtopte(va) \ 351 (((pt_entry_t *)PTE_BASE) + arm_btop((vaddr_t) (va))) 352 353 /* Virtual address to physical address */ 354 #define vtophys(va) \ 355 ((*vtopte(va) & L2_S_FRAME) | ((vaddr_t) (va) & L2_S_OFFSET)) 356 357 #define PTE_SYNC(pte) \ 358 cpu_dcache_wb_range((vaddr_t)(pte), sizeof(pt_entry_t)) 359 #define PTE_FLUSH(pte) \ 360 cpu_dcache_wbinv_range((vaddr_t)(pte), sizeof(pt_entry_t)) 361 362 #define PTE_SYNC_RANGE(pte, cnt) \ 363 cpu_dcache_wb_range((vaddr_t)(pte), (cnt) << 2) /* * sizeof(...) */ 364 #define PTE_FLUSH_RANGE(pte, cnt) \ 365 cpu_dcache_wbinv_range((vaddr_t)(pte), (cnt) << 2) /* * sizeof(...) */ 366 367 #else /* ARM32_PMAP_NEW */ 368 369 /* Virtual address to page table entry */ 370 static __inline pt_entry_t * 371 vtopte(vaddr_t va) 372 { 373 pd_entry_t *pdep; 374 pt_entry_t *ptep; 375 376 if (pmap_get_pde_pte(pmap_kernel(), va, &pdep, &ptep) == FALSE) 377 return (NULL); 378 return (ptep); 379 } 380 381 /* 382 * Virtual address to physical address 383 */ 384 static __inline paddr_t 385 vtophys(vaddr_t va) 386 { 387 paddr_t pa; 388 389 if (pmap_extract(pmap_kernel(), va, &pa) == FALSE) 390 return (0); /* XXXSCW: Panic? */ 391 392 return (pa); 393 } 394 395 /* 396 * The new pmap ensures that page-tables are always mapping Write-Thru. 397 * Thus, on some platforms we can run fast and loose and avoid syncing PTEs 398 * on every change. 399 * 400 * Unfortunately, not all CPUs have a write-through cache mode. So we 401 * define PMAP_NEEDS_PTE_SYNC for C code to conditionally do PTE syncs, 402 * and if there is the chance for PTE syncs to be needed, we define 403 * PMAP_INCLUDE_PTE_SYNC so e.g. assembly code can include (and run) 404 * the code. 405 */ 406 extern int pmap_needs_pte_sync; 407 #if defined(_KERNEL_OPT) 408 /* 409 * StrongARM SA-1 caches do not have a write-through mode. So, on these, 410 * we need to do PTE syncs. If only SA-1 is configured, then evaluate 411 * this at compile time. 412 */ 413 #if (ARM_MMU_SA1 == 1) && (ARM_NMMUS == 1) 414 #define PMAP_NEEDS_PTE_SYNC 1 415 #define PMAP_INCLUDE_PTE_SYNC 416 #elif (ARM_MMU_SA1 == 0) 417 #define PMAP_NEEDS_PTE_SYNC 0 418 #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 #define PTE_SYNC(pte) \ 431 do { \ 432 if (PMAP_NEEDS_PTE_SYNC) \ 433 cpu_dcache_wb_range((vaddr_t)(pte), sizeof(pt_entry_t));\ 434 } while (/*CONSTCOND*/0) 435 436 #define PTE_SYNC_RANGE(pte, cnt) \ 437 do { \ 438 if (PMAP_NEEDS_PTE_SYNC) { \ 439 cpu_dcache_wb_range((vaddr_t)(pte), \ 440 (cnt) << 2); /* * sizeof(pt_entry_t) */ \ 441 } \ 442 } while (/*CONSTCOND*/0) 443 #endif /* ARM32_PMAP_NEW */ 444 445 #define l1pte_valid(pde) ((pde) != 0) 446 #define l1pte_section_p(pde) (((pde) & L1_TYPE_MASK) == L1_TYPE_S) 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 #ifdef ARM32_PMAP_NEW 451 #define l2pte_index(v) (((v) & L2_ADDR_BITS) >> L2_S_SHIFT) 452 #endif 453 #define l2pte_valid(pte) ((pte) != 0) 454 #define l2pte_pa(pte) ((pte) & L2_S_FRAME) 455 456 /* L1 and L2 page table macros */ 457 #ifndef ARM32_PMAP_NEW 458 #define pmap_pdei(v) ((v & L1_S_FRAME) >> L1_S_SHIFT) 459 #define pmap_pde(m, v) (&((m)->pm_pdir[pmap_pdei(v)])) 460 #endif 461 462 #define pmap_pde_v(pde) l1pte_valid(*(pde)) 463 #define pmap_pde_section(pde) l1pte_section_p(*(pde)) 464 #define pmap_pde_page(pde) l1pte_page_p(*(pde)) 465 #define pmap_pde_fpage(pde) l1pte_fpage_p(*(pde)) 466 467 #define pmap_pte_v(pte) l2pte_valid(*(pte)) 468 #define pmap_pte_pa(pte) l2pte_pa(*(pte)) 469 470 /* Size of the kernel part of the L1 page table */ 471 #define KERNEL_PD_SIZE \ 472 (L1_TABLE_SIZE - (KERNEL_BASE >> L1_S_SHIFT) * sizeof(pd_entry_t)) 473 474 /************************* ARM MMU configuration *****************************/ 475 476 #if (ARM_MMU_GENERIC + ARM_MMU_SA1) != 0 477 void pmap_copy_page_generic(paddr_t, paddr_t); 478 void pmap_zero_page_generic(paddr_t); 479 480 void pmap_pte_init_generic(void); 481 #if defined(CPU_ARM8) 482 void pmap_pte_init_arm8(void); 483 #endif 484 #if defined(CPU_ARM9) 485 void pmap_pte_init_arm9(void); 486 #endif /* CPU_ARM9 */ 487 #endif /* (ARM_MMU_GENERIC + ARM_MMU_SA1) != 0 */ 488 489 #if ARM_MMU_SA1 == 1 490 void pmap_pte_init_sa1(void); 491 #endif /* ARM_MMU_SA1 == 1 */ 492 493 #if ARM_MMU_XSCALE == 1 494 void pmap_copy_page_xscale(paddr_t, paddr_t); 495 void pmap_zero_page_xscale(paddr_t); 496 497 void pmap_pte_init_xscale(void); 498 499 void xscale_setup_minidata(vaddr_t, vaddr_t, paddr_t); 500 #endif /* ARM_MMU_XSCALE == 1 */ 501 502 extern pt_entry_t pte_l1_s_cache_mode; 503 extern pt_entry_t pte_l1_s_cache_mask; 504 505 extern pt_entry_t pte_l2_l_cache_mode; 506 extern pt_entry_t pte_l2_l_cache_mask; 507 508 extern pt_entry_t pte_l2_s_cache_mode; 509 extern pt_entry_t pte_l2_s_cache_mask; 510 511 #ifdef ARM32_PMAP_NEW 512 extern pt_entry_t pte_l1_s_cache_mode_pt; 513 extern pt_entry_t pte_l2_l_cache_mode_pt; 514 extern pt_entry_t pte_l2_s_cache_mode_pt; 515 #endif 516 517 extern pt_entry_t pte_l2_s_prot_u; 518 extern pt_entry_t pte_l2_s_prot_w; 519 extern pt_entry_t pte_l2_s_prot_mask; 520 521 extern pt_entry_t pte_l1_s_proto; 522 extern pt_entry_t pte_l1_c_proto; 523 extern pt_entry_t pte_l2_s_proto; 524 525 extern void (*pmap_copy_page_func)(paddr_t, paddr_t); 526 extern void (*pmap_zero_page_func)(paddr_t); 527 528 /*****************************************************************************/ 529 530 /* 531 * tell MI code that the cache is virtually-indexed *and* virtually-tagged. 532 */ 533 #define PMAP_CACHE_VIVT 534 535 #ifdef ARM32_PMAP_NEW 536 /* 537 * Definitions for MMU domains 538 */ 539 #define PMAP_DOMAINS 15 /* 15 'user' domains (0-14) */ 540 #define PMAP_DOMAIN_KERNEL 15 /* The kernel uses domain #15 */ 541 #endif 542 543 /* 544 * These macros define the various bit masks in the PTE. 545 * 546 * We use these macros since we use different bits on different processor 547 * models. 548 */ 549 #define L1_S_PROT_U (L1_S_AP(AP_U)) 550 #define L1_S_PROT_W (L1_S_AP(AP_W)) 551 #define L1_S_PROT_MASK (L1_S_PROT_U|L1_S_PROT_W) 552 553 #define L1_S_CACHE_MASK_generic (L1_S_B|L1_S_C) 554 #define L1_S_CACHE_MASK_xscale (L1_S_B|L1_S_C|L1_S_XSCALE_TEX(TEX_XSCALE_X)) 555 556 #define L2_L_PROT_U (L2_AP(AP_U)) 557 #define L2_L_PROT_W (L2_AP(AP_W)) 558 #define L2_L_PROT_MASK (L2_L_PROT_U|L2_L_PROT_W) 559 560 #define L2_L_CACHE_MASK_generic (L2_B|L2_C) 561 #define L2_L_CACHE_MASK_xscale (L2_B|L2_C|L2_XSCALE_L_TEX(TEX_XSCALE_X)) 562 563 #define L2_S_PROT_U_generic (L2_AP(AP_U)) 564 #define L2_S_PROT_W_generic (L2_AP(AP_W)) 565 #define L2_S_PROT_MASK_generic (L2_S_PROT_U|L2_S_PROT_W) 566 567 #define L2_S_PROT_U_xscale (L2_AP0(AP_U)) 568 #define L2_S_PROT_W_xscale (L2_AP0(AP_W)) 569 #define L2_S_PROT_MASK_xscale (L2_S_PROT_U|L2_S_PROT_W) 570 571 #define L2_S_CACHE_MASK_generic (L2_B|L2_C) 572 #define L2_S_CACHE_MASK_xscale (L2_B|L2_C|L2_XSCALE_T_TEX(TEX_XSCALE_X)) 573 574 #define L1_S_PROTO_generic (L1_TYPE_S | L1_S_IMP) 575 #define L1_S_PROTO_xscale (L1_TYPE_S) 576 577 #define L1_C_PROTO_generic (L1_TYPE_C | L1_C_IMP2) 578 #define L1_C_PROTO_xscale (L1_TYPE_C) 579 580 #define L2_L_PROTO (L2_TYPE_L) 581 582 #define L2_S_PROTO_generic (L2_TYPE_S) 583 #define L2_S_PROTO_xscale (L2_TYPE_XSCALE_XS) 584 585 /* 586 * User-visible names for the ones that vary with MMU class. 587 */ 588 589 #if ARM_NMMUS > 1 590 /* More than one MMU class configured; use variables. */ 591 #define L2_S_PROT_U pte_l2_s_prot_u 592 #define L2_S_PROT_W pte_l2_s_prot_w 593 #define L2_S_PROT_MASK pte_l2_s_prot_mask 594 595 #define L1_S_CACHE_MASK pte_l1_s_cache_mask 596 #define L2_L_CACHE_MASK pte_l2_l_cache_mask 597 #define L2_S_CACHE_MASK pte_l2_s_cache_mask 598 599 #define L1_S_PROTO pte_l1_s_proto 600 #define L1_C_PROTO pte_l1_c_proto 601 #define L2_S_PROTO pte_l2_s_proto 602 603 #define pmap_copy_page(s, d) (*pmap_copy_page_func)((s), (d)) 604 #define pmap_zero_page(d) (*pmap_zero_page_func)((d)) 605 #elif (ARM_MMU_GENERIC + ARM_MMU_SA1) != 0 606 #define L2_S_PROT_U L2_S_PROT_U_generic 607 #define L2_S_PROT_W L2_S_PROT_W_generic 608 #define L2_S_PROT_MASK L2_S_PROT_MASK_generic 609 610 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_generic 611 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_generic 612 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_generic 613 614 #define L1_S_PROTO L1_S_PROTO_generic 615 #define L1_C_PROTO L1_C_PROTO_generic 616 #define L2_S_PROTO L2_S_PROTO_generic 617 618 #define pmap_copy_page(s, d) pmap_copy_page_generic((s), (d)) 619 #define pmap_zero_page(d) pmap_zero_page_generic((d)) 620 #elif ARM_MMU_XSCALE == 1 621 #define L2_S_PROT_U L2_S_PROT_U_xscale 622 #define L2_S_PROT_W L2_S_PROT_W_xscale 623 #define L2_S_PROT_MASK L2_S_PROT_MASK_xscale 624 625 #define L1_S_CACHE_MASK L1_S_CACHE_MASK_xscale 626 #define L2_L_CACHE_MASK L2_L_CACHE_MASK_xscale 627 #define L2_S_CACHE_MASK L2_S_CACHE_MASK_xscale 628 629 #define L1_S_PROTO L1_S_PROTO_xscale 630 #define L1_C_PROTO L1_C_PROTO_xscale 631 #define L2_S_PROTO L2_S_PROTO_xscale 632 633 #define pmap_copy_page(s, d) pmap_copy_page_xscale((s), (d)) 634 #define pmap_zero_page(d) pmap_zero_page_xscale((d)) 635 #endif /* ARM_NMMUS > 1 */ 636 637 /* 638 * These macros return various bits based on kernel/user and protection. 639 * Note that the compiler will usually fold these at compile time. 640 */ 641 #define L1_S_PROT(ku, pr) ((((ku) == PTE_USER) ? L1_S_PROT_U : 0) | \ 642 (((pr) & VM_PROT_WRITE) ? L1_S_PROT_W : 0)) 643 644 #define L2_L_PROT(ku, pr) ((((ku) == PTE_USER) ? L2_L_PROT_U : 0) | \ 645 (((pr) & VM_PROT_WRITE) ? L2_L_PROT_W : 0)) 646 647 #define L2_S_PROT(ku, pr) ((((ku) == PTE_USER) ? L2_S_PROT_U : 0) | \ 648 (((pr) & VM_PROT_WRITE) ? L2_S_PROT_W : 0)) 649 650 /* 651 * Macros to test if a mapping is mappable with an L1 Section mapping 652 * or an L2 Large Page mapping. 653 */ 654 #define L1_S_MAPPABLE_P(va, pa, size) \ 655 ((((va) | (pa)) & L1_S_OFFSET) == 0 && (size) >= L1_S_SIZE) 656 657 #define L2_L_MAPPABLE_P(va, pa, size) \ 658 ((((va) | (pa)) & L2_L_OFFSET) == 0 && (size) >= L2_L_SIZE) 659 660 /* 661 * Hooks for the pool allocator. 662 */ 663 #define POOL_VTOPHYS(va) vtophys((vaddr_t) (va)) 664 665 #endif /* _KERNEL */ 666 667 #endif /* _ARM32_PMAP_H_ */ 668
Indexes created Tue Sep 30 17:09:57 GMT 2025