vm_kern.h   [plain text]

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/* 
 * Mach Operating System
 * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
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 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */
/*
 */
/*
 *	File:	vm/vm_kern.h
 *	Author:	Avadis Tevanian, Jr., Michael Wayne Young
 *	Date:	1985
 *
 *	Kernel memory management definitions.
 */

#ifndef	_VM_VM_KERN_H_
#define _VM_VM_KERN_H_

#include <mach/mach_types.h>
#include <mach/boolean.h>
#include <mach/kern_return.h>

#ifdef	KERNEL_PRIVATE

#ifdef XNU_KERNEL_PRIVATE

extern kern_return_t	kernel_memory_allocate(
				vm_map_t	map,
				vm_offset_t	*addrp,
				vm_size_t	size,
				vm_offset_t	mask,
				int		flags,
				vm_tag_t        tag);

/* flags for kernel_memory_allocate */
#define KMA_HERE	0x01
#define KMA_NOPAGEWAIT	0x02
#define KMA_KOBJECT	0x04
#define KMA_LOMEM	0x08
#define KMA_GUARD_FIRST	0x10
#define KMA_GUARD_LAST	0x20
#define KMA_PERMANENT	0x40
#define KMA_NOENCRYPT	0x80
#define KMA_KSTACK	0x100
#define KMA_VAONLY	0x200
#define KMA_COMPRESSOR	0x400   /* Pages belonging to the compressor are not on the paging queues, nor are they counted as wired. */

extern kern_return_t kmem_alloc_contig(
				vm_map_t	map,
				vm_offset_t	*addrp,
				vm_size_t	size,
				vm_offset_t 	mask,
				ppnum_t		max_pnum,
				ppnum_t		pnum_mask,
				int 		flags,
				vm_tag_t        tag);

extern kern_return_t	kmem_alloc(
				vm_map_t	map,
				vm_offset_t	*addrp,
				vm_size_t	size,
				vm_tag_t        tag);

extern kern_return_t	kmem_alloc_pageable(
				vm_map_t	map,
				vm_offset_t	*addrp,
				vm_size_t	size,
				vm_tag_t        tag);

extern kern_return_t	kmem_alloc_aligned(
				vm_map_t	map,
				vm_offset_t	*addrp,
				vm_size_t	size,
				vm_tag_t        tag);

extern kern_return_t	kmem_realloc(
				vm_map_t	map,
				vm_offset_t	oldaddr,
				vm_size_t	oldsize,
				vm_offset_t	*newaddrp,
				vm_size_t	newsize,
				vm_tag_t        tag);

extern void		kmem_free(
				vm_map_t	map,
				vm_offset_t	addr,
				vm_size_t	size);

extern kern_return_t	kmem_suballoc(
				vm_map_t	parent,
				vm_offset_t	*addr,
				vm_size_t	size,
				boolean_t	pageable,
				int		flags,
				vm_map_t	*new_map);

extern kern_return_t	kmem_alloc_kobject(
				vm_map_t	map,
				vm_offset_t	*addrp,
				vm_size_t	size,
				vm_tag_t        tag);

extern kern_return_t kernel_memory_populate(
	vm_map_t	map,
	vm_offset_t	addr,
	vm_size_t	size,
	int		flags,
	vm_tag_t        tag);

extern void kernel_memory_depopulate(
	vm_map_t	map,
	vm_offset_t	addr,
	vm_size_t	size,
	int		flags);

extern kern_return_t	memory_object_iopl_request(
	ipc_port_t		port,
	memory_object_offset_t	offset,
	upl_size_t		*upl_size,
	upl_t			*upl_ptr,
	upl_page_info_array_t	user_page_list,
	unsigned int		*page_list_count,
	upl_control_flags_t	*flags);

struct mach_memory_info;
extern kern_return_t	vm_page_diagnose(struct mach_memory_info * sites, 
					 unsigned int num_sites);

extern vm_tag_t 	vm_tag_bt(void);

extern vm_tag_t		vm_tag_alloc(vm_allocation_site_t * site);

extern void		vm_tag_alloc_locked(vm_allocation_site_t * site);

extern vm_tag_t 	vm_tag_bt_debug(void);

extern boolean_t	vm_kernel_map_is_kernel(vm_map_t map);

extern ppnum_t		kernel_pmap_present_mapping(uint64_t vaddr, uint64_t * pvincr);

#else /* XNU_KERNEL_PRIVATE */

extern kern_return_t	kmem_alloc(
				vm_map_t	map,
				vm_offset_t	*addrp,
				vm_size_t	size);

extern kern_return_t	kmem_alloc_pageable(
				vm_map_t	map,
				vm_offset_t	*addrp,
				vm_size_t	size);

extern kern_return_t	kmem_alloc_kobject(
				vm_map_t	map,
				vm_offset_t	*addrp,
				vm_size_t	size);

extern void		kmem_free(
				vm_map_t	map,
				vm_offset_t	addr,
				vm_size_t	size);

#endif /* !XNU_KERNEL_PRIVATE */


#ifdef	MACH_KERNEL_PRIVATE

extern void		kmem_init(
					vm_offset_t	start,
					vm_offset_t	end);


extern kern_return_t	copyinmap(
				vm_map_t	map,
				vm_map_offset_t	fromaddr,
				void		*todata,
				vm_size_t	length);

extern kern_return_t	copyoutmap(
				vm_map_t	map,
				void		*fromdata,
				vm_map_offset_t	toaddr,
				vm_size_t	length);

extern kern_return_t	vm_conflict_check(
				vm_map_t		map,
				vm_map_offset_t		off,
				vm_map_size_t		len,
				memory_object_t		pager,
				vm_object_offset_t	file_off);

extern kern_return_t	kmem_alloc_external(
				vm_map_t	map,
				vm_offset_t	*addrp,
				vm_size_t	size);

extern kern_return_t	kmem_alloc_kobject_external(
				vm_map_t	map,
				vm_offset_t	*addrp,
				vm_size_t	size);

extern kern_return_t	kmem_alloc_pageable_external(
				vm_map_t	map,
				vm_offset_t	*addrp,
				vm_size_t	size);

#endif	/* MACH_KERNEL_PRIVATE */

extern vm_map_t	kernel_map;
extern vm_map_t	kernel_pageable_map;
extern vm_map_t ipc_kernel_map;

#endif	/* KERNEL_PRIVATE */

#ifdef KERNEL

extern vm_offset_t vm_kernel_addrperm_ext;

extern void	vm_kernel_addrperm_external(
			vm_offset_t addr,
			vm_offset_t *perm_addr);

extern void	vm_kernel_unslide_or_perm_external(
		vm_offset_t addr,
		vm_offset_t *up_addr);
#endif /* KERNEL */
#endif	/* _VM_VM_KERN_H_ */