[apple/xnu.git] / osfmk / arm / pmap.h

/*
 *
 * Copyright (c) 2007-2016 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
#ifndef _ARM_PMAP_H_
#define _ARM_PMAP_H_	1

#include <mach_assert.h>

#include <arm/proc_reg.h>
#if defined(__arm64__)
#include <arm64/proc_reg.h>
#endif

/*
 *	Machine-dependent structures for the physical map module.
 */

#ifndef ASSEMBLER

#include <mach/kern_return.h>
#include <mach/machine/vm_types.h>
#include <mach/vm_prot.h>
#include <mach/vm_statistics.h>
#include <mach/machine/vm_param.h>
#include <kern/kern_types.h>
#include <kern/thread.h>
#include <kern/queue.h>

/* Base address for low globals. */
#define LOW_GLOBAL_BASE_ADDRESS 0xfffffff000000000ULL

/*
 * This indicates (roughly) where there is free space for the VM
 * to use for the heap; this does not need to be precise.
 */
#if __ARM64_PMAP_SUBPAGE_L1__ && __ARM_16K_PG__
#define KERNEL_PMAP_HEAP_RANGE_START VM_MIN_KERNEL_AND_KEXT_ADDRESS
#else
#define KERNEL_PMAP_HEAP_RANGE_START LOW_GLOBAL_BASE_ADDRESS
#endif

#if defined(__arm64__)

typedef uint64_t	tt_entry_t;					/* translation table entry type */
#define TT_ENTRY_NULL	 ((tt_entry_t *) 0)

typedef uint64_t	pt_entry_t;					/* page table entry type */
#define PT_ENTRY_NULL	 ((pt_entry_t *) 0)

typedef	uint64_t	pmap_paddr_t;				/* physical address (not ppnum_t) */

#elif defined(__arm__)

typedef uint32_t	 tt_entry_t;				/* translation table entry type */
#define PT_ENTRY_NULL	 ((pt_entry_t *) 0)

typedef uint32_t	pt_entry_t;					/* page table entry type */
#define TT_ENTRY_NULL	 ((tt_entry_t *) 0)

typedef  uint32_t       pmap_paddr_t;			/* physical address (not ppnum_t) */

#else
#error unknown arch
#endif


/* superpages */
#define SUPERPAGE_NBASEPAGES 1	/* No superpages support */

/*
 *      Convert addresses to pages and vice versa.
 *      No rounding is used.
 */
#define arm_atop(x)         (((vm_map_address_t)(x)) >> ARM_PGSHIFT)
#define arm_ptoa(x)         (((vm_map_address_t)(x)) << ARM_PGSHIFT)

/*
 *      Round off or truncate to the nearest page.  These will work
 *      for either addresses or counts.  (i.e. 1 byte rounds to 1 page
 *      bytes.
 */
#define arm_round_page(x)   \
	((((vm_map_address_t)(x)) + ARM_PGMASK) & ~ARM_PGMASK)
#define arm_trunc_page(x)   (((vm_map_address_t)(x)) & ~ARM_PGMASK)

/* Convert address offset to page table index */
#define ptenum(a) ((((a) & ARM_TT_LEAF_INDEX_MASK) >> ARM_TT_LEAF_SHIFT))

/*
 * For setups where the kernel page size does not match the hardware
 * page size (assumably, the kernel page size must be a multiple of
 * the hardware page size), we will need to determine what the page
 * ratio is.
 */
#define PAGE_RATIO			((1 << PAGE_SHIFT) >> ARM_PGSHIFT)
#define TEST_PAGE_RATIO_4	(PAGE_RATIO == 4)

#if (__ARM_VMSA__ <= 7)
#define NTTES	(ARM_PGBYTES / sizeof(tt_entry_t))
#define NPTES	((ARM_PGBYTES/4) /sizeof(pt_entry_t))
#else
#define NTTES	(ARM_PGBYTES / sizeof(tt_entry_t))
#define NPTES	(ARM_PGBYTES / sizeof(pt_entry_t))
#endif

extern void flush_mmu_tlb(void);
extern void flush_core_tlb(void);
#if defined(__arm64__)
extern void flush_mmu_tlb_allentries(uint64_t, uint64_t);
extern void flush_mmu_tlb_entry(uint64_t);
extern void flush_mmu_tlb_entries(uint64_t, uint64_t);
extern void flush_mmu_tlb_asid(uint64_t);
extern void flush_core_tlb_asid(uint64_t);
/*
 * TLBI appers to only deal in 4KB page addresses, so give
 * it an explicit shift of 12.
 */
#define TLBI_ADDR_SIZE 44
#define TLBI_ADDR_MASK ((1ULL << TLBI_ADDR_SIZE) - 1)
#define TLBI_ADDR_SHIFT (12)
#define tlbi_addr(x) (((x) >> TLBI_ADDR_SHIFT) & TLBI_ADDR_MASK)

#define	TLBI_ASID_SHIFT	48
#define TLBI_ASID_SIZE 16
#define TLBI_ASID_MASK (((1ULL << TLBI_ASID_SIZE) - 1) << TLBI_ASID_SHIFT)
#define tlbi_asid(x) (((uint64_t)x << TLBI_ASID_SHIFT) & TLBI_ASID_MASK)
#else
extern void flush_mmu_tlb_entry(uint32_t);
extern void flush_mmu_tlb_entries(uint32_t, uint32_t);
extern void flush_mmu_tlb_mva_entries(uint32_t);
extern void flush_mmu_tlb_asid(uint32_t);
extern void flush_core_tlb_asid(uint32_t);
#endif
extern void flush_mmu_tlb_region(vm_offset_t va, unsigned length);

#if defined(__arm64__)
extern uint64_t get_mmu_control(void);
extern void set_mmu_control(uint64_t);
extern uint64_t get_aux_control(void);
extern void set_aux_control(uint64_t);
extern void set_mmu_ttb(uint64_t);
extern void set_mmu_ttb_alternate(uint64_t);
extern uint64_t get_tcr(void);
extern void set_tcr(uint64_t);
#else
extern uint32_t get_mmu_control(void);
extern void set_mmu_control(uint32_t);
extern uint32_t get_aux_control(void);
extern void set_aux_control(uint32_t);
extern void set_mmu_ttb(pmap_paddr_t);
extern void set_mmu_ttb_alternate(pmap_paddr_t);
extern void set_context_id(uint32_t);
#endif

extern pmap_paddr_t get_mmu_ttb(void);
extern pmap_paddr_t mmu_kvtop(vm_offset_t va); 
extern pmap_paddr_t mmu_kvtop_wpreflight(vm_offset_t va); 
extern pmap_paddr_t mmu_uvtop(vm_offset_t va); 

#if (__ARM_VMSA__ <= 7)
/* Convert address offset to translation table index */
#define ttenum(a)		((a) >>	ARM_TT_L1_SHIFT)

/* Convert translation table index to user virtual address */
#define tteitova(a)		((a) << ARM_TT_L1_SHIFT)

#define pa_to_suptte(a)		((a) & ARM_TTE_SUPER_L1_MASK)
#define suptte_to_pa(p)		((p) & ARM_TTE_SUPER_L1_MASK)

#define pa_to_sectte(a)		((a) & ARM_TTE_BLOCK_L1_MASK)
#define sectte_to_pa(p)		((p) & ARM_TTE_BLOCK_L1_MASK)

#define pa_to_tte(a)		((a) & ARM_TTE_TABLE_MASK)
#define tte_to_pa(p)		((p) & ARM_TTE_TABLE_MASK)

#define pa_to_pte(a)		((a) & ARM_PTE_PAGE_MASK)
#define pte_to_pa(p)		((p) & ARM_PTE_PAGE_MASK)
#define pte_increment_pa(p)	((p) += ptoa(1))

#define	ARM_NESTING_SIZE_MIN	((PAGE_SIZE/0x1000)*4*ARM_TT_L1_SIZE)
#define	ARM_NESTING_SIZE_MAX	((256*ARM_TT_L1_SIZE))

#else

/* Convert address offset to translation table index */
#define ttel0num(a)	((a & ARM_TTE_L0_MASK) >> ARM_TT_L0_SHIFT)
#define ttel1num(a)	((a & ARM_TTE_L1_MASK) >> ARM_TT_L1_SHIFT)
#define ttel2num(a)	((a & ARM_TTE_L2_MASK) >> ARM_TT_L2_SHIFT)

#define pa_to_tte(a)		((a) & ARM_TTE_TABLE_MASK)
#define tte_to_pa(p)		((p) & ARM_TTE_TABLE_MASK)

#define pa_to_pte(a)		((a) & ARM_PTE_MASK)
#define pte_to_pa(p)		((p) & ARM_PTE_MASK)
#define pte_to_ap(p)		(((p) & ARM_PTE_APMASK) >> ARM_PTE_APSHIFT)
#define pte_increment_pa(p)	((p) += ptoa(1))

#define	ARM_NESTING_SIZE_MIN	((PAGE_SIZE/ARM_PGBYTES)*ARM_TT_L2_SIZE)
#define	ARM_NESTING_SIZE_MAX	(0x0000000010000000ULL)

#define TLBFLUSH_SIZE	(ARM_TTE_MAX/((sizeof(unsigned int))*BYTE_SIZE))

#endif	/* __ARM_VMSA__ <= 7 */

#define	PMAP_GC_INFLIGHT	1
#define	PMAP_GC_WAIT		2

/*
 *	Convert translation/page table entry to kernel virtual address
 */
#define ttetokv(a)      (phystokv(tte_to_pa(a)))
#define ptetokv(a)      (phystokv(pte_to_pa(a)))

struct pmap {
	tt_entry_t			*tte;			/* translation table entries */
	pmap_paddr_t		ttep;			/* translation table physical */
	vm_map_address_t	min;			/* min address in pmap */
	vm_map_address_t	max;			/* max address in pmap */
	unsigned int		asid;			/* address space id */
	unsigned int		vasid;			/* Virtual address space id */
	unsigned int		stamp;			/* creation stamp */
	unsigned int		wired;			/* wired bits */
	volatile uint32_t	ref_count;		/* pmap reference count */
	unsigned int		cpu_ref;		/* number of cpus using pmap */
	unsigned int		gc_status;		/* gc status */
	ledger_t			ledger;			/* ledger tracking phys mappings */
	decl_simple_lock_data(,lock)		/* lock on map */
	struct pmap_statistics	stats;		/* map statistics */
	queue_chain_t		pmaps;			/* global list of pmaps */
	tt_entry_t			*tt_entry_free;	/* free translation table entries */
	tt_entry_t			*prev_tte;		/* previous translation table */
	unsigned int		tte_index_max;	/* max tte index in translation table entries */
	boolean_t			nx_enabled;		/* no execute */
	boolean_t			nested;			/* is nested */
	boolean_t			is_64bit;		/* is 64bit */
	struct pmap			*nested_pmap;	/* nested pmap */
	vm_map_address_t	nested_region_grand_addr;
	vm_map_address_t	nested_region_subord_addr;
	vm_map_offset_t		nested_region_size;
	unsigned int		*nested_region_asid_bitmap;
	unsigned int		nested_region_asid_bitmap_size;

#if (__ARM_VMSA__ <= 7)
	decl_simple_lock_data(,tt1_lock)	/* lock on tt1 */
#endif
#if MACH_ASSERT
	int					pmap_pid;
	char				pmap_procname[17];
#endif /* MACH_ASSERT */
#if DEVELOPMENT || DEBUG
	boolean_t		footprint_suspended;
	boolean_t		footprint_was_suspended;
#endif /* DEVELOPMENT || DEBUG */
};

/* typedef struct pmap *pmap_t; */
#define PMAP_NULL       ((pmap_t) 0)


/*
 * WIMG control
 */
#define	VM_MEM_INNER		0x10
#define VM_MEM_EARLY_ACK	0x20

#define	VM_WIMG_DEFAULT		(VM_MEM_COHERENT)
#define	VM_WIMG_COPYBACK	(VM_MEM_COHERENT)
#define	VM_WIMG_INNERWBACK	(VM_MEM_COHERENT | VM_MEM_INNER)
#define VM_WIMG_IO		(VM_MEM_COHERENT | VM_MEM_NOT_CACHEABLE | VM_MEM_GUARDED)
#define VM_WIMG_POSTED		(VM_MEM_COHERENT | VM_MEM_NOT_CACHEABLE | VM_MEM_GUARDED | VM_MEM_EARLY_ACK)
#define VM_WIMG_WTHRU		(VM_MEM_WRITE_THROUGH | VM_MEM_COHERENT | VM_MEM_GUARDED)
#define VM_WIMG_WCOMB		(VM_MEM_NOT_CACHEABLE | VM_MEM_COHERENT) 


#if VM_DEBUG
extern int      pmap_list_resident_pages(
                        pmap_t          pmap,
                        vm_offset_t  *listp,
                        int             space
                );
#else /* #if VM_DEBUG */
#define pmap_list_resident_pages(pmap, listp, space) (0)
#endif /* #if VM_DEBUG */

extern int copysafe(vm_map_address_t from, vm_map_address_t to, uint32_t cnt, int type, uint32_t *bytes_copied);

/* globals shared between arm_vm_init and pmap */
extern tt_entry_t *cpu_tte;	/* first CPUs translation table (shared with kernel pmap) */
extern pmap_paddr_t cpu_ttep;  /* physical translation table addr */

#if __arm64__
extern void *ropagetable_begin;
extern void *ropagetable_end;
#endif

#if __arm64__
extern tt_entry_t *invalid_tte;	/* global invalid translation table  */
extern pmap_paddr_t invalid_ttep;  /* physical invalid translation table addr */
#endif

#define PMAP_CONTEXT(pmap, thread)

/*
 * platform dependent Prototypes
 */
extern void pmap_switch_user_ttb(pmap_t pmap);
extern void pmap_bootstrap(vm_offset_t);
extern vm_map_address_t	pmap_ptov(pmap_t, ppnum_t);
extern ppnum_t pmap_find_phys(pmap_t map, addr64_t va);
extern void pmap_set_pmap(pmap_t pmap, thread_t thread);
extern void pmap_collect(pmap_t pmap);
extern	void pmap_gc(void);
#if defined(__arm64__)
extern vm_offset_t	pmap_extract(pmap_t pmap, vm_map_offset_t va);
#endif

/*
 * Interfaces implemented as macros.
 */

#define	PMAP_SWITCH_USER(th, new_map, my_cpu) {				\
	th->map = new_map;										\
	pmap_set_pmap(vm_map_pmap(new_map), th);				\
}

#define pmap_kernel()										\
	(kernel_pmap)

#define pmap_compressed(pmap)								\
	((pmap)->stats.compressed)

#define pmap_resident_count(pmap)							\
	((pmap)->stats.resident_count)

#define pmap_resident_max(pmap)								\
	((pmap)->stats.resident_max)

#define MACRO_NOOP

#define pmap_copy(dst_pmap, src_pmap, dst_addr, len, src_addr)		\
	MACRO_NOOP

#define pmap_pageable(pmap, start, end, pageable)			\
	MACRO_NOOP

#define pmap_kernel_va(VA)						\
	(((VA) >= VM_MIN_KERNEL_ADDRESS) && ((VA) <= VM_MAX_KERNEL_ADDRESS))

#define	pmap_attribute(pmap,addr,size,attr,value)			\
	(KERN_INVALID_ADDRESS)

#define copyinmsg(from, to, cnt)							\
	copyin(from, to, cnt)

#define copyoutmsg(from, to, cnt)							\
	copyout(from, to, cnt)

extern pmap_paddr_t kvtophys(vm_offset_t va); 

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);
extern vm_map_address_t pmap_map_high_window_bd( vm_offset_t pa, vm_size_t len, vm_prot_t prot);
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);
extern void pmap_map_globals(void);

#define PMAP_MAP_BD_DEVICE	0x1
#define PMAP_MAP_BD_WCOMB	0x2
#define PMAP_MAP_BD_POSTED	0x3
#define PMAP_MAP_BD_MASK	0x3

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);
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);

extern void pmap_init_pte_page(pmap_t, pt_entry_t *, vm_offset_t, unsigned int ttlevel, boolean_t alloc_ptd);
extern void pmap_init_pte_static_page(pmap_t, pt_entry_t *, pmap_paddr_t);

extern boolean_t pmap_valid_address(pmap_paddr_t addr);
extern void pmap_disable_NX(pmap_t pmap);
extern void pmap_set_nested(pmap_t pmap);
extern vm_map_address_t pmap_create_sharedpage(void);
extern void pmap_insert_sharedpage(pmap_t pmap);
extern void pmap_protect_sharedpage(void);

extern vm_offset_t pmap_cpu_windows_copy_addr(int cpu_num, unsigned int index);
extern unsigned int pmap_map_cpu_windows_copy(ppnum_t pn, vm_prot_t prot, unsigned int wimg_bits);
extern void pmap_unmap_cpu_windows_copy(unsigned int index);

extern void pt_fake_zone_init(int);
extern void pt_fake_zone_info(int *, vm_size_t *, vm_size_t *, vm_size_t *, vm_size_t *, 
			      uint64_t *, int *, int *, int *);

extern boolean_t pmap_valid_page(ppnum_t pn);

#define MACHINE_PMAP_IS_EMPTY 1
extern boolean_t pmap_is_empty(pmap_t pmap, vm_map_offset_t start, vm_map_offset_t end);

#define ARM_PMAP_MAX_OFFSET_DEFAULT	0x01
#define ARM_PMAP_MAX_OFFSET_MIN		0x02
#define ARM_PMAP_MAX_OFFSET_MAX		0x04
#define ARM_PMAP_MAX_OFFSET_DEVICE	0x08
#define ARM_PMAP_MAX_OFFSET_JUMBO	0x10

#define ASID_SHIFT			(11)				/* Shift for the maximum virtual ASID value (2048) */
#define MAX_ASID			(1 << ASID_SHIFT)		/* Max supported ASIDs (can be virtual) */
#define ARM_ASID_SHIFT			(8)				/* Shift for the maximum ARM ASID value (256) */
#define ARM_MAX_ASID			(1 << ARM_ASID_SHIFT)		/* Max ASIDs supported by the hardware */
#define ASID_VIRT_BITS			(ASID_SHIFT - ARM_ASID_SHIFT)	/* The number of virtual bits in a virtaul ASID */
#define NBBY				8

extern vm_map_offset_t pmap_max_offset(boolean_t is64, unsigned int option);

boolean_t pmap_virtual_region(unsigned int region_select, vm_map_offset_t *startp, vm_map_size_t *size);

boolean_t pmap_enforces_execute_only(pmap_t pmap);

/* pmap dispatch indices */
#define ARM_FAST_FAULT_INDEX 0
#define ARM_FORCE_FAST_FAULT_INDEX 1
#define MAPPING_FREE_PRIME_INDEX 2
#define MAPPING_REPLENISH_INDEX 3
#define PHYS_ATTRIBUTE_CLEAR_INDEX 4
#define PHYS_ATTRIBUTE_SET_INDEX 5
#define PMAP_BATCH_SET_CACHE_ATTRIBUTES_INDEX 6
#define PMAP_CHANGE_WIRING_INDEX 7
#define PMAP_CREATE_INDEX 8
#define PMAP_DESTROY_INDEX 9
#define PMAP_ENTER_OPTIONS_INDEX 10
#define PMAP_EXTRACT_INDEX 11
#define PMAP_FIND_PHYS_INDEX 12
#define PMAP_INSERT_SHAREDPAGE_INDEX 13
#define PMAP_IS_EMPTY_INDEX 14
#define PMAP_MAP_CPU_WINDOWS_COPY_INDEX 15
#define PMAP_MARK_PAGE_AS_PMAP_PAGE_INDEX 16
#define PMAP_NEST_INDEX 17
#define PMAP_PAGE_PROTECT_OPTIONS_INDEX 18
#define PMAP_PROTECT_OPTIONS_INDEX 19
#define PMAP_QUERY_PAGE_INFO_INDEX 20
#define PMAP_QUERY_RESIDENT_INDEX 21
#define PMAP_REFERENCE_INDEX 22
#define PMAP_REMOVE_OPTIONS_INDEX 23
#define PMAP_RETURN_INDEX 24
#define PMAP_SET_CACHE_ATTRIBUTES_INDEX 25
#define PMAP_SET_NESTED_INDEX 26
#define PMAP_SET_PROCESS_INDEX 27
#define PMAP_SWITCH_INDEX 28
#define PMAP_SWITCH_USER_TTB_INDEX 29
#define PMAP_UNHINT_KV_ADDR_INDEX 30
#define PMAP_UNMAP_CPU_WINDOWS_COPY_INDEX 31
#define PMAP_UNNEST_OPTIONS_INDEX 32
#define PMAP_FOOTPRINT_SUSPEND_INDEX 33
#define PMAP_CPU_DATA_INIT_INDEX 34
#define PMAP_RELEASE_PAGES_TO_KERNEL_INDEX 35

#define MAX_PMAP_INDEX 36

#define PMAP_INVALID_CPU_NUM (~0U)

struct pmap_cpu_data {
	pmap_t cpu_user_pmap;
	unsigned int cpu_number;
	unsigned int cpu_user_pmap_stamp;

	/*
	 * This supports overloading of ARM ASIDs by the pmap.  The field needs
	 * to be wide enough to cover all the virtual bits in a virtual ASID.
	 * With 256 physical ASIDs, 8-bit fields let us support up to 65536
	 * Virtual ASIDs, minus all that would map on to 0 (as 0 is a global
	 * ASID).
	 *
	 * If we were to use bitfield shenanigans here, we could save a bit of
	 * memory by only having enough bits to support MAX_ASID.  However, such
	 * an implementation would be more error prone.
	 */
	uint8_t cpu_asid_high_bits[ARM_MAX_ASID];
};

typedef struct pmap_cpu_data pmap_cpu_data_t;

/* Initialize the pmap per-CPU data for the current CPU. */
extern void pmap_cpu_data_init(void);

/* Get the pmap per-CPU data for the current CPU. */
extern pmap_cpu_data_t * pmap_get_cpu_data(void);

#define MARK_AS_PMAP_TEXT
#define MARK_AS_PMAP_DATA

extern kern_return_t pmap_return(boolean_t do_panic, boolean_t do_recurse);

#endif /* #ifndef ASSEMBLER */

#endif /* #ifndef _ARM_PMAP_H_ */
Commit	Line	Data
5ba3f43e A	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 <mach/kern_return.h>
	46	#include <mach/machine/vm_types.h>
	47	#include <mach/vm_prot.h>
	48	#include <mach/vm_statistics.h>
	49	#include <mach/machine/vm_param.h>
	50	#include <kern/kern_types.h>
	51	#include <kern/thread.h>
	52	#include <kern/queue.h>
	53
	54	/* Base address for low globals. */
	55	#define LOW_GLOBAL_BASE_ADDRESS 0xfffffff000000000ULL
	56
	57	/*
	58	* This indicates (roughly) where there is free space for the VM
	59	* to use for the heap; this does not need to be precise.
	60	*/
	61	#if __ARM64_PMAP_SUBPAGE_L1__ && __ARM_16K_PG__
	62	#define KERNEL_PMAP_HEAP_RANGE_START VM_MIN_KERNEL_AND_KEXT_ADDRESS
	63	#else
	64	#define KERNEL_PMAP_HEAP_RANGE_START LOW_GLOBAL_BASE_ADDRESS
65	#endif
66
67	#if defined(__arm64__)
68
69	typedef uint64_t tt_entry_t; /* translation table entry type */
70	#define TT_ENTRY_NULL ((tt_entry_t *) 0)
71
72	typedef uint64_t pt_entry_t; /* page table entry type */
73	#define PT_ENTRY_NULL ((pt_entry_t *) 0)
74
75	typedef uint64_t pmap_paddr_t; /* physical address (not ppnum_t) */
76
77	#elif defined(__arm__)
78
79	typedef uint32_t tt_entry_t; /* translation table entry type */
80	#define PT_ENTRY_NULL ((pt_entry_t *) 0)
81
82	typedef uint32_t pt_entry_t; /* page table entry type */
83	#define TT_ENTRY_NULL ((tt_entry_t *) 0)
84
85	typedef uint32_t pmap_paddr_t; /* physical address (not ppnum_t) */
86
87	#else
88	#error unknown arch
89	#endif
90
91
92	/* superpages */
93	#define SUPERPAGE_NBASEPAGES 1 /* No superpages support */
94
95	/*
96	* Convert addresses to pages and vice versa.
97	* No rounding is used.
98	*/
99	#define arm_atop(x) (((vm_map_address_t)(x)) >> ARM_PGSHIFT)
100	#define arm_ptoa(x) (((vm_map_address_t)(x)) << ARM_PGSHIFT)
101
102	/*
103	* Round off or truncate to the nearest page. These will work
104	* for either addresses or counts. (i.e. 1 byte rounds to 1 page
105	* bytes.
106	*/
107	#define arm_round_page(x) \
108	((((vm_map_address_t)(x)) + ARM_PGMASK) & ~ARM_PGMASK)
109	#define arm_trunc_page(x) (((vm_map_address_t)(x)) & ~ARM_PGMASK)
110
111	/* Convert address offset to page table index */
112	#define ptenum(a) ((((a) & ARM_TT_LEAF_INDEX_MASK) >> ARM_TT_LEAF_SHIFT))
113
114	/*
115	* For setups where the kernel page size does not match the hardware
116	* page size (assumably, the kernel page size must be a multiple of
117	* the hardware page size), we will need to determine what the page
118	* ratio is.
119	*/
120	#define PAGE_RATIO ((1 << PAGE_SHIFT) >> ARM_PGSHIFT)
121	#define TEST_PAGE_RATIO_4 (PAGE_RATIO == 4)
122
123	#if (__ARM_VMSA__ <= 7)
124	#define NTTES (ARM_PGBYTES / sizeof(tt_entry_t))
125	#define NPTES ((ARM_PGBYTES/4) /sizeof(pt_entry_t))
126	#else
127	#define NTTES (ARM_PGBYTES / sizeof(tt_entry_t))
128	#define NPTES (ARM_PGBYTES / sizeof(pt_entry_t))
129	#endif
130
131	extern void flush_mmu_tlb(void);
132	extern void flush_core_tlb(void);
133	#if defined(__arm64__)
134	extern void flush_mmu_tlb_allentries(uint64_t, uint64_t);
135	extern void flush_mmu_tlb_entry(uint64_t);
136	extern void flush_mmu_tlb_entries(uint64_t, uint64_t);
137	extern void flush_mmu_tlb_asid(uint64_t);
138	extern void flush_core_tlb_asid(uint64_t);
139	/*
140	* TLBI appers to only deal in 4KB page addresses, so give
141	* it an explicit shift of 12.
142	*/
143	#define TLBI_ADDR_SIZE 44
144	#define TLBI_ADDR_MASK ((1ULL << TLBI_ADDR_SIZE) - 1)
145	#define TLBI_ADDR_SHIFT (12)
146	#define tlbi_addr(x) (((x) >> TLBI_ADDR_SHIFT) & TLBI_ADDR_MASK)
147
148	#define TLBI_ASID_SHIFT 48
149	#define TLBI_ASID_SIZE 16
150	#define TLBI_ASID_MASK (((1ULL << TLBI_ASID_SIZE) - 1) << TLBI_ASID_SHIFT)
151	#define tlbi_asid(x) (((uint64_t)x << TLBI_ASID_SHIFT) & TLBI_ASID_MASK)
152	#else
153	extern void flush_mmu_tlb_entry(uint32_t);
154	extern void flush_mmu_tlb_entries(uint32_t, uint32_t);
155	extern void flush_mmu_tlb_mva_entries(uint32_t);
156	extern void flush_mmu_tlb_asid(uint32_t);
157	extern void flush_core_tlb_asid(uint32_t);
158	#endif
159	extern void flush_mmu_tlb_region(vm_offset_t va, unsigned length);
160
161	#if defined(__arm64__)
162	extern uint64_t get_mmu_control(void);
163	extern void set_mmu_control(uint64_t);
164	extern uint64_t get_aux_control(void);
165	extern void set_aux_control(uint64_t);
166	extern void set_mmu_ttb(uint64_t);
167	extern void set_mmu_ttb_alternate(uint64_t);
168	extern uint64_t get_tcr(void);
169	extern void set_tcr(uint64_t);
170	#else
171	extern uint32_t get_mmu_control(void);
172	extern void set_mmu_control(uint32_t);
173	extern uint32_t get_aux_control(void);
174	extern void set_aux_control(uint32_t);
175	extern void set_mmu_ttb(pmap_paddr_t);
176	extern void set_mmu_ttb_alternate(pmap_paddr_t);
177	extern void set_context_id(uint32_t);
178	#endif
179
180	extern pmap_paddr_t get_mmu_ttb(void);
181	extern pmap_paddr_t mmu_kvtop(vm_offset_t va);
182	extern pmap_paddr_t mmu_kvtop_wpreflight(vm_offset_t va);
183	extern pmap_paddr_t mmu_uvtop(vm_offset_t va);
184
185	#if (__ARM_VMSA__ <= 7)
186	/* Convert address offset to translation table index */
187	#define ttenum(a) ((a) >> ARM_TT_L1_SHIFT)
188
189	/* Convert translation table index to user virtual address */
190	#define tteitova(a) ((a) << ARM_TT_L1_SHIFT)
191
192	#define pa_to_suptte(a) ((a) & ARM_TTE_SUPER_L1_MASK)
193	#define suptte_to_pa(p) ((p) & ARM_TTE_SUPER_L1_MASK)
194
195	#define pa_to_sectte(a) ((a) & ARM_TTE_BLOCK_L1_MASK)
196	#define sectte_to_pa(p) ((p) & ARM_TTE_BLOCK_L1_MASK)
197
198	#define pa_to_tte(a) ((a) & ARM_TTE_TABLE_MASK)
199	#define tte_to_pa(p) ((p) & ARM_TTE_TABLE_MASK)
200
201	#define pa_to_pte(a) ((a) & ARM_PTE_PAGE_MASK)
202	#define pte_to_pa(p) ((p) & ARM_PTE_PAGE_MASK)
203	#define pte_increment_pa(p) ((p) += ptoa(1))
204
205	#define ARM_NESTING_SIZE_MIN ((PAGE_SIZE/0x1000)4ARM_TT_L1_SIZE)
206	#define ARM_NESTING_SIZE_MAX ((256*ARM_TT_L1_SIZE))
207
208	#else
209
210	/* Convert address offset to translation table index */
211	#define ttel0num(a) ((a & ARM_TTE_L0_MASK) >> ARM_TT_L0_SHIFT)
212	#define ttel1num(a) ((a & ARM_TTE_L1_MASK) >> ARM_TT_L1_SHIFT)
213	#define ttel2num(a) ((a & ARM_TTE_L2_MASK) >> ARM_TT_L2_SHIFT)
214
215	#define pa_to_tte(a) ((a) & ARM_TTE_TABLE_MASK)
216	#define tte_to_pa(p) ((p) & ARM_TTE_TABLE_MASK)
217
218	#define pa_to_pte(a) ((a) & ARM_PTE_MASK)
219	#define pte_to_pa(p) ((p) & ARM_PTE_MASK)
220	#define pte_to_ap(p) (((p) & ARM_PTE_APMASK) >> ARM_PTE_APSHIFT)
221	#define pte_increment_pa(p) ((p) += ptoa(1))
222
223	#define ARM_NESTING_SIZE_MIN ((PAGE_SIZE/ARM_PGBYTES)*ARM_TT_L2_SIZE)
224	#define ARM_NESTING_SIZE_MAX (0x0000000010000000ULL)
225
226	#define TLBFLUSH_SIZE (ARM_TTE_MAX/((sizeof(unsigned int))*BYTE_SIZE))
227
228	#endif /* __ARM_VMSA__ <= 7 */
229
230	#define PMAP_GC_INFLIGHT 1
231	#define PMAP_GC_WAIT 2
232
233	/*
234	* Convert translation/page table entry to kernel virtual address
235	*/
236	#define ttetokv(a) (phystokv(tte_to_pa(a)))
237	#define ptetokv(a) (phystokv(pte_to_pa(a)))
238
239	struct pmap {
240	tt_entry_t tte; / translation table entries */
241	pmap_paddr_t ttep; /* translation table physical */
242	vm_map_address_t min; /* min address in pmap */
243	vm_map_address_t max; /* max address in pmap */
244	unsigned int asid; /* address space id */
245	unsigned int vasid; /* Virtual address space id */
246	unsigned int stamp; /* creation stamp */
247	unsigned int wired; /* wired bits */
248	volatile uint32_t ref_count; /* pmap reference count */
249	unsigned int cpu_ref; /* number of cpus using pmap */
250	unsigned int gc_status; /* gc status */
251	ledger_t ledger; /* ledger tracking phys mappings */
252	decl_simple_lock_data(,lock) /* lock on map */
253	struct pmap_statistics stats; /* map statistics */
254	queue_chain_t pmaps; /* global list of pmaps */
255	tt_entry_t tt_entry_free; / free translation table entries */
256	tt_entry_t prev_tte; / previous translation table */
257	unsigned int tte_index_max; /* max tte index in translation table entries */
258	boolean_t nx_enabled; /* no execute */
259	boolean_t nested; /* is nested */
260	boolean_t is_64bit; /* is 64bit */
261	struct pmap nested_pmap; / nested pmap */
262	vm_map_address_t nested_region_grand_addr;
263	vm_map_address_t nested_region_subord_addr;
264	vm_map_offset_t nested_region_size;
265	unsigned int *nested_region_asid_bitmap;
266	unsigned int nested_region_asid_bitmap_size;
267
268	#if (__ARM_VMSA__ <= 7)
269	decl_simple_lock_data(,tt1_lock) /* lock on tt1 */
270	#endif
271	#if MACH_ASSERT
272	int pmap_pid;
273	char pmap_procname[17];
274	#endif /* MACH_ASSERT */
275	#if DEVELOPMENT \|\| DEBUG
276	boolean_t footprint_suspended;
277	boolean_t footprint_was_suspended;
278	#endif /* DEVELOPMENT \|\| DEBUG */
279	};
280
281	/* typedef struct pmap pmap_t; /
282	#define PMAP_NULL ((pmap_t) 0)
283
284
285	/*
286	* WIMG control
287	*/
288	#define VM_MEM_INNER 0x10
289	#define VM_MEM_EARLY_ACK 0x20
290
291	#define VM_WIMG_DEFAULT (VM_MEM_COHERENT)
292	#define VM_WIMG_COPYBACK (VM_MEM_COHERENT)
293	#define VM_WIMG_INNERWBACK (VM_MEM_COHERENT \| VM_MEM_INNER)
294	#define VM_WIMG_IO (VM_MEM_COHERENT \| VM_MEM_NOT_CACHEABLE \| VM_MEM_GUARDED)
295	#define VM_WIMG_POSTED (VM_MEM_COHERENT \| VM_MEM_NOT_CACHEABLE \| VM_MEM_GUARDED \| VM_MEM_EARLY_ACK)
296	#define VM_WIMG_WTHRU (VM_MEM_WRITE_THROUGH \| VM_MEM_COHERENT \| VM_MEM_GUARDED)
297	#define VM_WIMG_WCOMB (VM_MEM_NOT_CACHEABLE \| VM_MEM_COHERENT)
298
299
300	#if VM_DEBUG
301	extern int pmap_list_resident_pages(
302	pmap_t pmap,
303	vm_offset_t *listp,
304	int space
305	);
306	#else /* #if VM_DEBUG */
307	#define pmap_list_resident_pages(pmap, listp, space) (0)
308	#endif /* #if VM_DEBUG */
309
310	extern int copysafe(vm_map_address_t from, vm_map_address_t to, uint32_t cnt, int type, uint32_t *bytes_copied);
311
312	/* globals shared between arm_vm_init and pmap */
313	extern tt_entry_t cpu_tte; / first CPUs translation table (shared with kernel pmap) */
314	extern pmap_paddr_t cpu_ttep; /* physical translation table addr */
315
316	#if __arm64__
317	extern void *ropagetable_begin;
318	extern void *ropagetable_end;
319	#endif
320
321	#if __arm64__
322	extern tt_entry_t invalid_tte; / global invalid translation table */
323	extern pmap_paddr_t invalid_ttep; /* physical invalid translation table addr */
324	#endif
325
326	#define PMAP_CONTEXT(pmap, thread)
327
328	/*
329	* platform dependent Prototypes
330	*/
331	extern void pmap_switch_user_ttb(pmap_t pmap);
332	extern void pmap_bootstrap(vm_offset_t);
333	extern vm_map_address_t pmap_ptov(pmap_t, ppnum_t);
334	extern ppnum_t pmap_find_phys(pmap_t map, addr64_t va);
335	extern void pmap_set_pmap(pmap_t pmap, thread_t thread);
336	extern void pmap_collect(pmap_t pmap);
337	extern void pmap_gc(void);
338	#if defined(__arm64__)
339	extern vm_offset_t pmap_extract(pmap_t pmap, vm_map_offset_t va);
340	#endif
341
342	/*
343	* Interfaces implemented as macros.
344	*/
345
346	#define PMAP_SWITCH_USER(th, new_map, my_cpu) { \
347	th->map = new_map; \
348	pmap_set_pmap(vm_map_pmap(new_map), th); \
349	}
350
351	#define pmap_kernel() \
352	(kernel_pmap)
353
354	#define pmap_compressed(pmap) \
355	((pmap)->stats.compressed)
356
357	#define pmap_resident_count(pmap) \
358	((pmap)->stats.resident_count)
359
360	#define pmap_resident_max(pmap) \
361	((pmap)->stats.resident_max)
362
363	#define MACRO_NOOP
364
365	#define pmap_copy(dst_pmap, src_pmap, dst_addr, len, src_addr) \
366	MACRO_NOOP
367
368	#define pmap_pageable(pmap, start, end, pageable) \
369	MACRO_NOOP
370
371	#define pmap_kernel_va(VA) \
372	(((VA) >= VM_MIN_KERNEL_ADDRESS) && ((VA) <= VM_MAX_KERNEL_ADDRESS))
373
374	#define pmap_attribute(pmap,addr,size,attr,value) \
375	(KERN_INVALID_ADDRESS)
376
377	#define copyinmsg(from, to, cnt) \
378	copyin(from, to, cnt)
379
380	#define copyoutmsg(from, to, cnt) \
381	copyout(from, to, cnt)
382
383	extern pmap_paddr_t kvtophys(vm_offset_t va);
384
385	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);
386	extern vm_map_address_t pmap_map_high_window_bd( vm_offset_t pa, vm_size_t len, vm_prot_t prot);
387	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);
388	extern void pmap_map_globals(void);
389
390	#define PMAP_MAP_BD_DEVICE 0x1
391	#define PMAP_MAP_BD_WCOMB 0x2
392	#define PMAP_MAP_BD_POSTED 0x3
393	#define PMAP_MAP_BD_MASK 0x3
394
395	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);
396	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);
397
398	extern void pmap_init_pte_page(pmap_t, pt_entry_t *, vm_offset_t, unsigned int ttlevel, boolean_t alloc_ptd);
399	extern void pmap_init_pte_static_page(pmap_t, pt_entry_t *, pmap_paddr_t);
400
401	extern boolean_t pmap_valid_address(pmap_paddr_t addr);
402	extern void pmap_disable_NX(pmap_t pmap);
403	extern void pmap_set_nested(pmap_t pmap);
404	extern vm_map_address_t pmap_create_sharedpage(void);
405	extern void pmap_insert_sharedpage(pmap_t pmap);
406	extern void pmap_protect_sharedpage(void);
407
408	extern vm_offset_t pmap_cpu_windows_copy_addr(int cpu_num, unsigned int index);
409	extern unsigned int pmap_map_cpu_windows_copy(ppnum_t pn, vm_prot_t prot, unsigned int wimg_bits);
410	extern void pmap_unmap_cpu_windows_copy(unsigned int index);
411
412	extern void pt_fake_zone_init(int);
413	extern void pt_fake_zone_info(int , vm_size_t , vm_size_t , vm_size_t , vm_size_t *,
414	uint64_t , int , int , int );
415
416	extern boolean_t pmap_valid_page(ppnum_t pn);
417
418	#define MACHINE_PMAP_IS_EMPTY 1
419	extern boolean_t pmap_is_empty(pmap_t pmap, vm_map_offset_t start, vm_map_offset_t end);
420
421	#define ARM_PMAP_MAX_OFFSET_DEFAULT 0x01
422	#define ARM_PMAP_MAX_OFFSET_MIN 0x02
423	#define ARM_PMAP_MAX_OFFSET_MAX 0x04
424	#define ARM_PMAP_MAX_OFFSET_DEVICE 0x08
425	#define ARM_PMAP_MAX_OFFSET_JUMBO 0x10
426
427	#define ASID_SHIFT (11) /* Shift for the maximum virtual ASID value (2048) */
428	#define MAX_ASID (1 << ASID_SHIFT) /* Max supported ASIDs (can be virtual) */
429	#define ARM_ASID_SHIFT (8) /* Shift for the maximum ARM ASID value (256) */
430	#define ARM_MAX_ASID (1 << ARM_ASID_SHIFT) /* Max ASIDs supported by the hardware */
431	#define ASID_VIRT_BITS (ASID_SHIFT - ARM_ASID_SHIFT) /* The number of virtual bits in a virtaul ASID */
432	#define NBBY 8
433
434	extern vm_map_offset_t pmap_max_offset(boolean_t is64, unsigned int option);
435
436	boolean_t pmap_virtual_region(unsigned int region_select, vm_map_offset_t startp, vm_map_size_t size);
437
438	boolean_t pmap_enforces_execute_only(pmap_t pmap);
439
440	/* pmap dispatch indices */
441	#define ARM_FAST_FAULT_INDEX 0
442	#define ARM_FORCE_FAST_FAULT_INDEX 1
443	#define MAPPING_FREE_PRIME_INDEX 2
444	#define MAPPING_REPLENISH_INDEX 3
445	#define PHYS_ATTRIBUTE_CLEAR_INDEX 4
446	#define PHYS_ATTRIBUTE_SET_INDEX 5
447	#define PMAP_BATCH_SET_CACHE_ATTRIBUTES_INDEX 6
448	#define PMAP_CHANGE_WIRING_INDEX 7
449	#define PMAP_CREATE_INDEX 8
450	#define PMAP_DESTROY_INDEX 9
451	#define PMAP_ENTER_OPTIONS_INDEX 10
452	#define PMAP_EXTRACT_INDEX 11
453	#define PMAP_FIND_PHYS_INDEX 12
454	#define PMAP_INSERT_SHAREDPAGE_INDEX 13
455	#define PMAP_IS_EMPTY_INDEX 14
456	#define PMAP_MAP_CPU_WINDOWS_COPY_INDEX 15
457	#define PMAP_MARK_PAGE_AS_PMAP_PAGE_INDEX 16
458	#define PMAP_NEST_INDEX 17
459	#define PMAP_PAGE_PROTECT_OPTIONS_INDEX 18
460	#define PMAP_PROTECT_OPTIONS_INDEX 19
461	#define PMAP_QUERY_PAGE_INFO_INDEX 20
462	#define PMAP_QUERY_RESIDENT_INDEX 21
463	#define PMAP_REFERENCE_INDEX 22
464	#define PMAP_REMOVE_OPTIONS_INDEX 23
465	#define PMAP_RETURN_INDEX 24
466	#define PMAP_SET_CACHE_ATTRIBUTES_INDEX 25
467	#define PMAP_SET_NESTED_INDEX 26
468	#define PMAP_SET_PROCESS_INDEX 27
469	#define PMAP_SWITCH_INDEX 28
470	#define PMAP_SWITCH_USER_TTB_INDEX 29
471	#define PMAP_UNHINT_KV_ADDR_INDEX 30
472	#define PMAP_UNMAP_CPU_WINDOWS_COPY_INDEX 31
473	#define PMAP_UNNEST_OPTIONS_INDEX 32
474	#define PMAP_FOOTPRINT_SUSPEND_INDEX 33
475	#define PMAP_CPU_DATA_INIT_INDEX 34
476	#define PMAP_RELEASE_PAGES_TO_KERNEL_INDEX 35
477
478	#define MAX_PMAP_INDEX 36
479
480	#define PMAP_INVALID_CPU_NUM (~0U)
481
482	struct pmap_cpu_data {
483	pmap_t cpu_user_pmap;
484	unsigned int cpu_number;
485	unsigned int cpu_user_pmap_stamp;
486
487	/*
488	* This supports overloading of ARM ASIDs by the pmap. The field needs
489	* to be wide enough to cover all the virtual bits in a virtual ASID.
490	* With 256 physical ASIDs, 8-bit fields let us support up to 65536
491	* Virtual ASIDs, minus all that would map on to 0 (as 0 is a global
492	* ASID).
493	*
494	* If we were to use bitfield shenanigans here, we could save a bit of
495	* memory by only having enough bits to support MAX_ASID. However, such
496	* an implementation would be more error prone.
497	*/
498	uint8_t cpu_asid_high_bits[ARM_MAX_ASID];
499	};
500
501	typedef struct pmap_cpu_data pmap_cpu_data_t;
502
503	/* Initialize the pmap per-CPU data for the current CPU. */
504	extern void pmap_cpu_data_init(void);
505
506	/* Get the pmap per-CPU data for the current CPU. */
507	extern pmap_cpu_data_t * pmap_get_cpu_data(void);
508
509	#define MARK_AS_PMAP_TEXT
510	#define MARK_AS_PMAP_DATA
511
512	extern kern_return_t pmap_return(boolean_t do_panic, boolean_t do_recurse);
513
514	#endif /* #ifndef ASSEMBLER */
515
516	#endif /* #ifndef _ARM_PMAP_H_ */