osfmk/arm/pmap.h

   1 /*
   2  *
   3  * Copyright (c) 2007-2016 Apple Inc. All rights reserved.
   4  *
   5  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   6  *
   7  * This file contains Original Code and/or Modifications of Original Code
   8  * as defined in and that are subject to the Apple Public Source License
   9  * Version 2.0 (the 'License'). You may not use this file except in
  10  * compliance with the License. The rights granted to you under the License
  11  * may not be used to create, or enable the creation or redistribution of,
  12  * unlawful or unlicensed copies of an Apple operating system, or to
  13  * circumvent, violate, or enable the circumvention or violation of, any
  14  * terms of an Apple operating system software license agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  18  *
  19  * The Original Code and all software distributed under the License are
  20  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  21  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  22  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  23  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  24  * Please see the License for the specific language governing rights and
  25  * limitations under the License.
  26  *
  27  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  28  */
  29 #ifndef _ARM_PMAP_H_
  30 #define _ARM_PMAP_H_    1
  31
  32 #include <mach_assert.h>
  33
  34 #include <arm/proc_reg.h>
  35 #if defined(__arm64__)
  36 #include <arm64/proc_reg.h>
  37 #endif
  38
  39 /*
  40  *      Machine-dependent structures for the physical map module.
  41  */
  42
  43 #ifndef ASSEMBLER
  44
  45 #include <stdatomic.h>
  46 #include <libkern/section_keywords.h>
  47 #include <mach/kern_return.h>
  48 #include <mach/machine/vm_types.h>
  49 #include <arm/pmap_public.h>
  50 #include <mach/arm/thread_status.h>
  51
  52 #if __ARM_KERNEL_PROTECT__
  53 /*
  54  * For __ARM_KERNEL_PROTECT__, we need twice as many ASIDs to support having
  55  * unique EL0 and EL1 ASIDs for each pmap.
  56  */
  57 #define ASID_SHIFT                      (12)                            /* Shift for the maximum virtual ASID value (2048)*/
  58 #else /* __ARM_KERNEL_PROTECT__ */
  59 #define ASID_SHIFT                      (11)                            /* Shift for the maximum virtual ASID value (2048) */
  60 #endif /* __ARM_KERNEL_PROTECT__ */
  61 #define MAX_ASID                        (1 << ASID_SHIFT)               /* Max supported ASIDs (can be virtual) */
  62 #define ARM_ASID_SHIFT                  (8)                             /* Shift for the maximum ARM ASID value (256) */
  63 #define ARM_MAX_ASID                    (1 << ARM_ASID_SHIFT)           /* Max ASIDs supported by the hardware */
  64 #define ASID_VIRT_BITS                  (ASID_SHIFT - ARM_ASID_SHIFT)   /* The number of virtual bits in a virtaul ASID */
  65 #define NBBY                            8
  66
  67 struct pmap_cpu_data {
  68 #if defined(__arm64__)
  69         pmap_t cpu_nested_pmap;
  70 #else
  71         pmap_t cpu_user_pmap;
  72         unsigned int cpu_user_pmap_stamp;
  73 #endif
  74         unsigned int cpu_number;
  75
  76
  77         /*
  78          * This supports overloading of ARM ASIDs by the pmap.  The field needs
  79          * to be wide enough to cover all the virtual bits in a virtual ASID.
  80          * With 256 physical ASIDs, 8-bit fields let us support up to 65536
  81          * Virtual ASIDs, minus all that would map on to 0 (as 0 is a global
  82          * ASID).
  83          *
  84          * If we were to use bitfield shenanigans here, we could save a bit of
  85          * memory by only having enough bits to support MAX_ASID.  However, such
  86          * an implementation would be more error prone.
  87          */
  88         uint8_t cpu_asid_high_bits[ARM_MAX_ASID];
  89 };
  90 typedef struct pmap_cpu_data pmap_cpu_data_t;
  91
  92 #include <mach/vm_prot.h>
  93 #include <mach/vm_statistics.h>
  94 #include <mach/machine/vm_param.h>
  95 #include <kern/kern_types.h>
  96 #include <kern/thread.h>
  97 #include <kern/queue.h>
  98
  99
 100 #include <sys/cdefs.h>
 101
 102 /* Base address for low globals. */
 103 #define LOW_GLOBAL_BASE_ADDRESS 0xfffffff000000000ULL
 104
 105 /*
 106  * This indicates (roughly) where there is free space for the VM
 107  * to use for the heap; this does not need to be precise.
 108  */
 109 #if __ARM64_PMAP_SUBPAGE_L1__ && __ARM_16K_PG__
 110 #define KERNEL_PMAP_HEAP_RANGE_START VM_MIN_KERNEL_AND_KEXT_ADDRESS
 111 #else
 112 #define KERNEL_PMAP_HEAP_RANGE_START LOW_GLOBAL_BASE_ADDRESS
 113 #endif
 114
 115 #if defined(__arm64__)
 116
 117 #define BOOTSTRAP_TABLE_SIZE (ARM_PGBYTES * 8)
 118
 119 typedef uint64_t        tt_entry_t;                                     /* translation table entry type */
 120 #define TT_ENTRY_NULL    ((tt_entry_t *) 0)
 121
 122 typedef uint64_t        pt_entry_t;                                     /* page table entry type */
 123 #define PT_ENTRY_NULL    ((pt_entry_t *) 0)
 124
 125 #elif defined(__arm__)
 126
 127 typedef uint32_t         tt_entry_t;                            /* translation table entry type */
 128 #define PT_ENTRY_NULL    ((pt_entry_t *) 0)
 129
 130 typedef uint32_t        pt_entry_t;                                     /* page table entry type */
 131 #define TT_ENTRY_NULL    ((tt_entry_t *) 0)
 132
 133 #else
 134 #error unknown arch
 135 #endif
 136
 137
 138 /* superpages */
 139 #define SUPERPAGE_NBASEPAGES 1  /* No superpages support */
 140
 141 /*
 142  *      Convert addresses to pages and vice versa.
 143  *      No rounding is used.
 144  */
 145 #define arm_atop(x)         (((vm_map_address_t)(x)) >> ARM_PGSHIFT)
 146 #define arm_ptoa(x)         (((vm_map_address_t)(x)) << ARM_PGSHIFT)
 147
 148 /*
 149  *      Round off or truncate to the nearest page.  These will work
 150  *      for either addresses or counts.  (i.e. 1 byte rounds to 1 page
 151  *      bytes.
 152  */
 153 #define arm_round_page(x)   \
 154         ((((vm_map_address_t)(x)) + ARM_PGMASK) & ~ARM_PGMASK)
 155 #define arm_trunc_page(x)   (((vm_map_address_t)(x)) & ~ARM_PGMASK)
 156
 157 /* Convert address offset to page table index */
 158 #define ptenum(a) ((((a) & ARM_TT_LEAF_INDEX_MASK) >> ARM_TT_LEAF_SHIFT))
 159
 160 /*
 161  * For setups where the kernel page size does not match the hardware
 162  * page size (assumably, the kernel page size must be a multiple of
 163  * the hardware page size), we will need to determine what the page
 164  * ratio is.
 165  */
 166 #define PAGE_RATIO                      ((1 << PAGE_SHIFT) >> ARM_PGSHIFT)
 167 #define TEST_PAGE_RATIO_4       (PAGE_RATIO == 4)
 168
 169 #if (__ARM_VMSA__ <= 7)
 170 #define NTTES   (ARM_PGBYTES / sizeof(tt_entry_t))
 171 #define NPTES   ((ARM_PGBYTES/4) /sizeof(pt_entry_t))
 172 #else
 173 #define NTTES   (ARM_PGBYTES / sizeof(tt_entry_t))
 174 #define NPTES   (ARM_PGBYTES / sizeof(pt_entry_t))
 175 #endif
 176
 177 extern void sync_tlb_flush(void);
 178 extern void flush_mmu_tlb_async(void);
 179 extern void flush_mmu_tlb(void);
 180 extern void flush_core_tlb_async(void);
 181 extern void flush_core_tlb(void);
 182 #if defined(__arm64__)
 183 extern void flush_mmu_tlb_allentries_async(uint64_t, uint64_t);
 184 extern void flush_mmu_tlb_allentries(uint64_t, uint64_t);
 185 extern void flush_mmu_tlb_entry_async(uint64_t);
 186 extern void flush_mmu_tlb_entry(uint64_t);
 187 extern void flush_mmu_tlb_entries_async(uint64_t, uint64_t);
 188 extern void flush_mmu_tlb_entries(uint64_t, uint64_t);
 189 extern void flush_mmu_tlb_asid_async(uint64_t);
 190 extern void flush_mmu_tlb_asid(uint64_t);
 191 extern void flush_core_tlb_asid_async(uint64_t);
 192 extern void flush_core_tlb_asid(uint64_t);
 193
 194 #define tlbi_addr(x) (((x) >> TLBI_ADDR_SHIFT) & TLBI_ADDR_MASK)
 195 #define tlbi_asid(x) (((uint64_t)x << TLBI_ASID_SHIFT) & TLBI_ASID_MASK)
 196 #else
 197 extern void flush_mmu_tlb_entry_async(uint32_t);
 198 extern void flush_mmu_tlb_entry(uint32_t);
 199 extern void flush_mmu_tlb_entries_async(uint32_t, uint32_t);
 200 extern void flush_mmu_tlb_entries(uint32_t, uint32_t);
 201 extern void flush_mmu_tlb_mva_entries_async(uint32_t);
 202 extern void flush_mmu_tlb_mva_entries(uint32_t);
 203 extern void flush_mmu_tlb_asid_async(uint32_t);
 204 extern void flush_mmu_tlb_asid(uint32_t);
 205 extern void flush_core_tlb_asid_async(uint32_t);
 206 extern void flush_core_tlb_asid(uint32_t);
 207 #endif
 208 extern void flush_mmu_tlb_region(vm_offset_t va, unsigned length);
 209
 210 #if defined(__arm64__)
 211 extern uint64_t get_mmu_control(void);
 212 extern uint64_t get_aux_control(void);
 213 extern void set_aux_control(uint64_t);
 214 extern void set_mmu_ttb(uint64_t);
 215 extern void set_mmu_ttb_alternate(uint64_t);
 216 extern uint64_t get_tcr(void);
 217 extern void set_tcr(uint64_t);
 218 extern uint64_t pmap_get_arm64_prot(pmap_t, vm_offset_t);
 219 #else
 220 extern uint32_t get_mmu_control(void);
 221 extern void set_mmu_control(uint32_t);
 222 extern uint32_t get_aux_control(void);
 223 extern void set_aux_control(uint32_t);
 224 extern void set_mmu_ttb(pmap_paddr_t);
 225 extern void set_mmu_ttb_alternate(pmap_paddr_t);
 226 extern void set_context_id(uint32_t);
 227 #endif
 228
 229 extern pmap_paddr_t get_mmu_ttb(void);
 230 extern pmap_paddr_t mmu_kvtop(vm_offset_t va);
 231 extern pmap_paddr_t mmu_kvtop_wpreflight(vm_offset_t va);
 232 extern pmap_paddr_t mmu_uvtop(vm_offset_t va);
 233
 234 #if (__ARM_VMSA__ <= 7)
 235 /* Convert address offset to translation table index */
 236 #define ttenum(a)               ((a) >> ARM_TT_L1_SHIFT)
 237
 238 /* Convert translation table index to user virtual address */
 239 #define tteitova(a)             ((a) << ARM_TT_L1_SHIFT)
 240
 241 #define pa_to_suptte(a)         ((a) & ARM_TTE_SUPER_L1_MASK)
 242 #define suptte_to_pa(p)         ((p) & ARM_TTE_SUPER_L1_MASK)
 243
 244 #define pa_to_sectte(a)         ((a) & ARM_TTE_BLOCK_L1_MASK)
 245 #define sectte_to_pa(p)         ((p) & ARM_TTE_BLOCK_L1_MASK)
 246
 247 #define pa_to_tte(a)            ((a) & ARM_TTE_TABLE_MASK)
 248 #define tte_to_pa(p)            ((p) & ARM_TTE_TABLE_MASK)
 249
 250 #define pa_to_pte(a)            ((a) & ARM_PTE_PAGE_MASK)
 251 #define pte_to_pa(p)            ((p) & ARM_PTE_PAGE_MASK)
 252 #define pte_increment_pa(p)     ((p) += ptoa(1))
 253
 254 #define ARM_NESTING_SIZE_MIN    ((PAGE_SIZE/0x1000)*4*ARM_TT_L1_SIZE)
 255 #define ARM_NESTING_SIZE_MAX    ((256*ARM_TT_L1_SIZE))
 256
 257 #else
 258
 259 /* Convert address offset to translation table index */
 260 #define ttel0num(a)     ((a & ARM_TTE_L0_MASK) >> ARM_TT_L0_SHIFT)
 261 #define ttel1num(a)     ((a & ARM_TTE_L1_MASK) >> ARM_TT_L1_SHIFT)
 262 #define ttel2num(a)     ((a & ARM_TTE_L2_MASK) >> ARM_TT_L2_SHIFT)
 263
 264 #define pa_to_tte(a)            ((a) & ARM_TTE_TABLE_MASK)
 265 #define tte_to_pa(p)            ((p) & ARM_TTE_TABLE_MASK)
 266
 267 #define pa_to_pte(a)            ((a) & ARM_PTE_MASK)
 268 #define pte_to_pa(p)            ((p) & ARM_PTE_MASK)
 269 #define pte_to_ap(p)            (((p) & ARM_PTE_APMASK) >> ARM_PTE_APSHIFT)
 270 #define pte_increment_pa(p)     ((p) += ptoa(1))
 271
 272 #define ARM_NESTING_SIZE_MIN    ((PAGE_SIZE/ARM_PGBYTES)*ARM_TT_L2_SIZE)
 273 #define ARM_NESTING_SIZE_MAX    (0x0000000010000000ULL)
 274
 275 #define TLBFLUSH_SIZE   (ARM_TTE_MAX/((sizeof(unsigned int))*BYTE_SIZE))
 276
 277 #endif  /* __ARM_VMSA__ <= 7 */
 278
 279 #define PMAP_GC_INFLIGHT        1
 280 #define PMAP_GC_WAIT            2
 281
 282 #if DEVELOPMENT || DEBUG
 283 #define pmap_cs_log(msg, args...) printf("PMAP_CS: " msg "\n", args)
 284 #define pmap_cs_log_h(msg, args...) { if(pmap_cs_log_hacks) printf("PMAP_CS: " msg "\n", args); }
 285
 286 #define PMAP_CS_EXCEPTION_LIST_HACK 1
 287
 288 #else
 289 #define pmap_cs_log(msg, args...)
 290 #define pmap_cs_log_h(msg, args...)
 291 #endif /* DEVELOPMENT || DEBUG */
 292
 293
 294 /*
 295  *      Convert translation/page table entry to kernel virtual address
 296  */
 297 #define ttetokv(a)      (phystokv(tte_to_pa(a)))
 298 #define ptetokv(a)      (phystokv(pte_to_pa(a)))
 299
 300 struct pmap {
 301         tt_entry_t                      *tte;                   /* translation table entries */
 302         pmap_paddr_t            ttep;                   /* translation table physical */
 303         vm_map_address_t        min;                    /* min address in pmap */
 304         vm_map_address_t        max;                    /* max address in pmap */
 305         ledger_t                ledger;                 /* ledger tracking phys mappings */
 306         decl_simple_lock_data(,lock)            /* lock on map */
 307         struct pmap_statistics  stats;          /* map statistics */
 308         queue_chain_t           pmaps;                  /* global list of pmaps */
 309         tt_entry_t                      *tt_entry_free; /* free translation table entries */
 310         tt_entry_t                      *prev_tte;              /* previous translation table */
 311         struct pmap                     *nested_pmap;   /* nested pmap */
 312         vm_map_address_t        nested_region_grand_addr;
 313         vm_map_address_t        nested_region_subord_addr;
 314         vm_map_offset_t         nested_region_size;
 315         vm_map_offset_t         nested_region_true_start;
 316         vm_map_offset_t         nested_region_true_end;
 317         unsigned int            *nested_region_asid_bitmap;
 318
 319 #if (__ARM_VMSA__ <= 7)
 320         decl_simple_lock_data(,tt1_lock)        /* lock on tt1 */
 321         unsigned int            cpu_ref;                /* number of cpus using pmap */
 322 #endif
 323
 324
 325         unsigned int            asid;                   /* address space id */
 326         unsigned int            vasid;                  /* Virtual address space id */
 327         unsigned int            stamp;                  /* creation stamp */
 328         _Atomic int32_t         ref_count;              /* pmap reference count */
 329         unsigned int            gc_status;              /* gc status */
 330         unsigned int            nested_region_asid_bitmap_size;
 331         unsigned int            tte_index_max;  /* max tte index in translation table entries */
 332         uint32_t        nested_no_bounds_refcnt;/* number of pmaps that nested this pmap without bounds set */
 333
 334 #if MACH_ASSERT
 335         int                     pmap_pid;
 336         char                    pmap_procname[17];
 337         bool            pmap_stats_assert;
 338 #endif /* MACH_ASSERT */
 339 #if DEVELOPMENT || DEBUG
 340         bool            footprint_suspended;
 341         bool            footprint_was_suspended;
 342 #endif /* DEVELOPMENT || DEBUG */
 343         bool                    nx_enabled;                             /* no execute */
 344         bool                    nested;                                 /* is nested */
 345         bool                    is_64bit;                               /* is 64bit */
 346         bool            nested_has_no_bounds_ref;       /* nested a pmap when the bounds were not set */
 347         bool            nested_bounds_set;                      /* The nesting bounds have been set */
 348 };
 349
 350 /* typedef struct pmap *pmap_t; */
 351 #define PMAP_NULL       ((pmap_t) 0)
 352
 353
 354 /*
 355  * WIMG control
 356  */
 357 #define VM_MEM_INNER            0x10
 358 #define VM_MEM_RT               0x10 // intentionally alias VM_MEM_INNER; will be used with mutually exclusive caching policies
 359 #define VM_MEM_EARLY_ACK        0x20
 360
 361 #define VM_WIMG_DEFAULT         (VM_MEM_COHERENT)
 362 #define VM_WIMG_COPYBACK        (VM_MEM_COHERENT)
 363 #define VM_WIMG_INNERWBACK      (VM_MEM_COHERENT | VM_MEM_INNER)
 364 #define VM_WIMG_IO              (VM_MEM_COHERENT | VM_MEM_NOT_CACHEABLE | VM_MEM_GUARDED)
 365 #define VM_WIMG_POSTED          (VM_MEM_COHERENT | VM_MEM_NOT_CACHEABLE | VM_MEM_GUARDED | VM_MEM_EARLY_ACK)
 366 #define VM_WIMG_WTHRU           (VM_MEM_WRITE_THROUGH | VM_MEM_COHERENT | VM_MEM_GUARDED)
 367 #define VM_WIMG_WCOMB           (VM_MEM_NOT_CACHEABLE | VM_MEM_COHERENT)
 368 #define VM_WIMG_RT              (VM_WIMG_IO | VM_MEM_RT)
 369
 370 #if VM_DEBUG
 371 extern int      pmap_list_resident_pages(
 372                         pmap_t          pmap,
 373                         vm_offset_t  *listp,
 374                         int             space
 375                 );
 376 #else /* #if VM_DEBUG */
 377 #define pmap_list_resident_pages(pmap, listp, space) (0)
 378 #endif /* #if VM_DEBUG */
 379
 380 extern int copysafe(vm_map_address_t from, vm_map_address_t to, uint32_t cnt, int type, uint32_t *bytes_copied);
 381
 382 /* globals shared between arm_vm_init and pmap */
 383 extern tt_entry_t *cpu_tte;     /* first CPUs translation table (shared with kernel pmap) */
 384 extern pmap_paddr_t cpu_ttep;  /* physical translation table addr */
 385
 386 #if __arm64__
 387 extern void *ropagetable_begin;
 388 extern void *ropagetable_end;
 389 #endif
 390
 391 #if __arm64__
 392 extern tt_entry_t *invalid_tte; /* global invalid translation table  */
 393 extern pmap_paddr_t invalid_ttep;  /* physical invalid translation table addr */
 394 #endif
 395
 396 #define PMAP_CONTEXT(pmap, thread)
 397
 398 /*
 399  * platform dependent Prototypes
 400  */
 401 extern void pmap_switch_user_ttb(pmap_t pmap);
 402 extern void pmap_clear_user_ttb(void);
 403 extern void pmap_bootstrap(vm_offset_t);
 404 extern vm_map_address_t pmap_ptov(pmap_t, ppnum_t);
 405 extern ppnum_t pmap_find_phys(pmap_t map, addr64_t va);
 406 extern void pmap_set_pmap(pmap_t pmap, thread_t thread);
 407 extern void pmap_collect(pmap_t pmap);
 408 extern  void pmap_gc(void);
 409 #if defined(__arm64__)
 410 extern vm_offset_t pmap_extract(pmap_t pmap, vm_map_offset_t va);
 411 #endif
 412
 413 /*
 414  * Interfaces implemented as macros.
 415  */
 416
 417 #define PMAP_SWITCH_USER(th, new_map, my_cpu) {                         \
 418         th->map = new_map;                                                                              \
 419         pmap_set_pmap(vm_map_pmap(new_map), th);                                \
 420 }
 421
 422 #define pmap_kernel()                                                                           \
 423         (kernel_pmap)
 424
 425 #define pmap_compressed(pmap)                                                           \
 426         ((pmap)->stats.compressed)
 427
 428 #define pmap_resident_count(pmap)                                                       \
 429         ((pmap)->stats.resident_count)
 430
 431 #define pmap_resident_max(pmap)                                                         \
 432         ((pmap)->stats.resident_max)
 433
 434 #define MACRO_NOOP
 435
 436 #define pmap_copy(dst_pmap, src_pmap, dst_addr, len, src_addr)          \
 437         MACRO_NOOP
 438
 439 #define pmap_pageable(pmap, start, end, pageable)                       \
 440         MACRO_NOOP
 441
 442 #define pmap_kernel_va(VA)                                              \
 443         (((VA) >= VM_MIN_KERNEL_ADDRESS) && ((VA) <= VM_MAX_KERNEL_ADDRESS))
 444
 445 #define pmap_attribute(pmap,addr,size,attr,value)                       \
 446         (KERN_INVALID_ADDRESS)
 447
 448 #define copyinmsg(from, to, cnt)                                                        \
 449         copyin(from, to, cnt)
 450
 451 #define copyoutmsg(from, to, cnt)                                                       \
 452         copyout(from, to, cnt)
 453
 454 extern pmap_paddr_t kvtophys(vm_offset_t va);
 455 extern vm_map_address_t phystokv(pmap_paddr_t pa);
 456 extern vm_map_address_t phystokv_range(pmap_paddr_t pa, vm_size_t *max_len);
 457
 458 extern vm_map_address_t pmap_map(vm_map_address_t va, vm_offset_t sa, vm_offset_t ea, vm_prot_t prot, unsigned int flags);
 459 extern vm_map_address_t pmap_map_high_window_bd( vm_offset_t pa, vm_size_t len, vm_prot_t prot);
 460 extern kern_return_t pmap_map_block(pmap_t pmap, addr64_t va, ppnum_t pa, uint32_t size, vm_prot_t prot, int attr, unsigned int flags);
 461 extern void pmap_map_globals(void);
 462
 463 #define PMAP_MAP_BD_DEVICE      0x1
 464 #define PMAP_MAP_BD_WCOMB       0x2
 465 #define PMAP_MAP_BD_POSTED      0x3
 466 #define PMAP_MAP_BD_MASK        0x3
 467
 468 extern vm_map_address_t pmap_map_bd_with_options(vm_map_address_t va, vm_offset_t sa, vm_offset_t ea, vm_prot_t prot, int32_t options);
 469 extern vm_map_address_t pmap_map_bd(vm_map_address_t va, vm_offset_t sa, vm_offset_t ea, vm_prot_t prot);
 470
 471 extern void pmap_init_pte_page(pmap_t, pt_entry_t *, vm_offset_t, unsigned int ttlevel, boolean_t alloc_ptd);
 472
 473 extern boolean_t pmap_valid_address(pmap_paddr_t addr);
 474 extern void pmap_disable_NX(pmap_t pmap);
 475 extern void pmap_set_nested(pmap_t pmap);
 476 extern vm_map_address_t pmap_create_sharedpage(void);
 477 extern void pmap_insert_sharedpage(pmap_t pmap);
 478 extern void pmap_protect_sharedpage(void);
 479
 480 extern vm_offset_t pmap_cpu_windows_copy_addr(int cpu_num, unsigned int index);
 481 extern unsigned int pmap_map_cpu_windows_copy(ppnum_t pn, vm_prot_t prot, unsigned int wimg_bits);
 482 extern void pmap_unmap_cpu_windows_copy(unsigned int index);
 483
 484 extern void pt_fake_zone_init(int);
 485 extern void pt_fake_zone_info(int *, vm_size_t *, vm_size_t *, vm_size_t *, vm_size_t *,
 486                               uint64_t *, int *, int *, int *);
 487
 488 extern boolean_t pmap_valid_page(ppnum_t pn);
 489
 490 #define MACHINE_PMAP_IS_EMPTY 1
 491 extern boolean_t pmap_is_empty(pmap_t pmap, vm_map_offset_t start, vm_map_offset_t end);
 492
 493 #define ARM_PMAP_MAX_OFFSET_DEFAULT     0x01
 494 #define ARM_PMAP_MAX_OFFSET_MIN         0x02
 495 #define ARM_PMAP_MAX_OFFSET_MAX         0x04
 496 #define ARM_PMAP_MAX_OFFSET_DEVICE      0x08
 497 #define ARM_PMAP_MAX_OFFSET_JUMBO       0x10
 498
 499
 500 extern vm_map_offset_t pmap_max_offset(boolean_t is64, unsigned int option);
 501 extern vm_map_offset_t pmap_max_64bit_offset(unsigned int option);
 502 extern vm_map_offset_t pmap_max_32bit_offset(unsigned int option);
 503
 504 boolean_t pmap_virtual_region(unsigned int region_select, vm_map_offset_t *startp, vm_map_size_t *size);
 505
 506 boolean_t pmap_enforces_execute_only(pmap_t pmap);
 507
 508 /* pmap dispatch indices */
 509 #define ARM_FAST_FAULT_INDEX 0
 510 #define ARM_FORCE_FAST_FAULT_INDEX 1
 511 #define MAPPING_FREE_PRIME_INDEX 2
 512 #define MAPPING_REPLENISH_INDEX 3
 513 #define PHYS_ATTRIBUTE_CLEAR_INDEX 4
 514 #define PHYS_ATTRIBUTE_SET_INDEX 5
 515 #define PMAP_BATCH_SET_CACHE_ATTRIBUTES_INDEX 6
 516 #define PMAP_CHANGE_WIRING_INDEX 7
 517 #define PMAP_CREATE_INDEX 8
 518 #define PMAP_DESTROY_INDEX 9
 519 #define PMAP_ENTER_OPTIONS_INDEX 10
 520 #define PMAP_EXTRACT_INDEX 11
 521 #define PMAP_FIND_PHYS_INDEX 12
 522 #define PMAP_INSERT_SHAREDPAGE_INDEX 13
 523 #define PMAP_IS_EMPTY_INDEX 14
 524 #define PMAP_MAP_CPU_WINDOWS_COPY_INDEX 15
 525 #define PMAP_MARK_PAGE_AS_PMAP_PAGE_INDEX 16
 526 #define PMAP_NEST_INDEX 17
 527 #define PMAP_PAGE_PROTECT_OPTIONS_INDEX 18
 528 #define PMAP_PROTECT_OPTIONS_INDEX 19
 529 #define PMAP_QUERY_PAGE_INFO_INDEX 20
 530 #define PMAP_QUERY_RESIDENT_INDEX 21
 531 #define PMAP_REFERENCE_INDEX 22
 532 #define PMAP_REMOVE_OPTIONS_INDEX 23
 533 #define PMAP_RETURN_INDEX 24
 534 #define PMAP_SET_CACHE_ATTRIBUTES_INDEX 25
 535 #define PMAP_SET_NESTED_INDEX 26
 536 #define PMAP_SET_PROCESS_INDEX 27
 537 #define PMAP_SWITCH_INDEX 28
 538 #define PMAP_SWITCH_USER_TTB_INDEX 29
 539 #define PMAP_CLEAR_USER_TTB_INDEX 30
 540 #define PMAP_UNMAP_CPU_WINDOWS_COPY_INDEX 31
 541 #define PMAP_UNNEST_OPTIONS_INDEX 32
 542 #define PMAP_FOOTPRINT_SUSPEND_INDEX 33
 543 #define PMAP_CPU_DATA_INIT_INDEX 34
 544 #define PMAP_RELEASE_PAGES_TO_KERNEL_INDEX 35
 545 #define PMAP_SET_JIT_ENTITLED_INDEX 36
 546
 547
 548 #define PMAP_TRIM_INDEX 64
 549 #define PMAP_LEDGER_ALLOC_INIT_INDEX 65
 550 #define PMAP_LEDGER_ALLOC_INDEX 66
 551 #define PMAP_LEDGER_FREE_INDEX 67
 552
 553 #define PMAP_COUNT 68
 554
 555 #define PMAP_INVALID_CPU_NUM (~0U)
 556
 557 struct pmap_cpu_data_array_entry {
 558         pmap_cpu_data_t cpu_data;
 559 } __attribute__((aligned(1 << L2_CLINE)));
 560
 561 /* Initialize the pmap per-CPU data for the current CPU. */
 562 extern void pmap_cpu_data_init(void);
 563
 564 /* Get the pmap per-CPU data for the current CPU. */
 565 extern pmap_cpu_data_t * pmap_get_cpu_data(void);
 566
 567
 568 #define MARK_AS_PMAP_TEXT
 569 #define MARK_AS_PMAP_DATA
 570 #define MARK_AS_PMAP_RODATA
 571
 572
 573
 574 extern kern_return_t pmap_return(boolean_t do_panic, boolean_t do_recurse);
 575
 576 #define pmap_force_dcache_clean(va, sz) CleanPoC_DcacheRegion_Force(va, sz)
 577 #define pmap_simple_lock(l)             simple_lock(l)
 578 #define pmap_simple_unlock(l)           simple_unlock(l)
 579 #define pmap_simple_lock_try(l)         simple_lock_try(l)
 580 #define pmap_lock_bit(l, i)             hw_lock_bit(l, i)
 581 #define pmap_unlock_bit(l, i)           hw_unlock_bit(l, i)
 582
 583 #endif /* #ifndef ASSEMBLER */
 584
 585 #if __ARM_KERNEL_PROTECT__
 586 /*
 587  * The exception vector mappings start at the middle of the kernel page table
 588  * range  (so that the EL0 mapping can be located at the base of the range).
 589  */
 590 #define ARM_KERNEL_PROTECT_EXCEPTION_START ((~((ARM_TT_ROOT_SIZE + ARM_TT_ROOT_INDEX_MASK) / 2ULL)) + 1ULL)
 591 #endif /* __ARM_KERNEL_PROTECT__ */
 592
 593 #endif /* #ifndef _ARM_PMAP_H_ */