grant-table.c File Reference

#include <linux/module.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/hardirq.h>
#include <xen/xen.h>
#include <xen/interface/xen.h>
#include <xen/page.h>
#include <xen/grant_table.h>
#include <xen/interface/memory.h>
#include <xen/hvc-console.h>
#include <asm/xen/hypercall.h>
#include <asm/xen/interface.h>
#include <asm/pgtable.h>
#include <asm/sync_bitops.h>

Go to the source code of this file.

Data Structures
struct	gnttab_ops
struct	deferred_entry

Macros
#define	NR_RESERVED_ENTRIES   8
#define	GNTTAB_LIST_END   0xffffffff
#define	GREFS_PER_GRANT_FRAME
#define	RPP   (PAGE_SIZE / sizeof(grant_ref_t))
#define	SPP   (PAGE_SIZE / sizeof(grant_status_t))
#define	gnttab_entry(entry)   (*__gnttab_entry(entry))
#define	MAX_DELAY   256

Functions
	EXPORT_SYMBOL_GPL (xen_hvm_resume_frames)
void	gnttab_grant_foreign_access_ref (grant_ref_t ref, domid_t domid, unsigned long frame, int readonly)
	EXPORT_SYMBOL_GPL (gnttab_grant_foreign_access_ref)
int	gnttab_grant_foreign_access (domid_t domid, unsigned long frame, int readonly)
	EXPORT_SYMBOL_GPL (gnttab_grant_foreign_access)
int	gnttab_grant_foreign_access_subpage_ref (grant_ref_t ref, domid_t domid, unsigned long frame, int flags, unsigned page_off, unsigned length)
	EXPORT_SYMBOL_GPL (gnttab_grant_foreign_access_subpage_ref)
int	gnttab_grant_foreign_access_subpage (domid_t domid, unsigned long frame, int flags, unsigned page_off, unsigned length)
	EXPORT_SYMBOL_GPL (gnttab_grant_foreign_access_subpage)
bool	gnttab_subpage_grants_available (void)
	EXPORT_SYMBOL_GPL (gnttab_subpage_grants_available)
int	gnttab_grant_foreign_access_trans_ref (grant_ref_t ref, domid_t domid, int flags, domid_t trans_domid, grant_ref_t trans_gref)
	EXPORT_SYMBOL_GPL (gnttab_grant_foreign_access_trans_ref)
int	gnttab_grant_foreign_access_trans (domid_t domid, int flags, domid_t trans_domid, grant_ref_t trans_gref)
	EXPORT_SYMBOL_GPL (gnttab_grant_foreign_access_trans)
bool	gnttab_trans_grants_available (void)
	EXPORT_SYMBOL_GPL (gnttab_trans_grants_available)
int	gnttab_query_foreign_access (grant_ref_t ref)
	EXPORT_SYMBOL_GPL (gnttab_query_foreign_access)
int	gnttab_end_foreign_access_ref (grant_ref_t ref, int readonly)
	EXPORT_SYMBOL_GPL (gnttab_end_foreign_access_ref)
void	gnttab_end_foreign_access (grant_ref_t ref, int readonly, unsigned long page)
	EXPORT_SYMBOL_GPL (gnttab_end_foreign_access)
int	gnttab_grant_foreign_transfer (domid_t domid, unsigned long pfn)
	EXPORT_SYMBOL_GPL (gnttab_grant_foreign_transfer)
void	gnttab_grant_foreign_transfer_ref (grant_ref_t ref, domid_t domid, unsigned long pfn)
	EXPORT_SYMBOL_GPL (gnttab_grant_foreign_transfer_ref)
unsigned long	gnttab_end_foreign_transfer_ref (grant_ref_t ref)
	EXPORT_SYMBOL_GPL (gnttab_end_foreign_transfer_ref)
unsigned long	gnttab_end_foreign_transfer (grant_ref_t ref)
	EXPORT_SYMBOL_GPL (gnttab_end_foreign_transfer)
void	gnttab_free_grant_reference (grant_ref_t ref)
	EXPORT_SYMBOL_GPL (gnttab_free_grant_reference)
void	gnttab_free_grant_references (grant_ref_t head)
	EXPORT_SYMBOL_GPL (gnttab_free_grant_references)
int	gnttab_alloc_grant_references (u16 count, grant_ref_t *head)
	EXPORT_SYMBOL_GPL (gnttab_alloc_grant_references)
int	gnttab_empty_grant_references (const grant_ref_t *private_head)
	EXPORT_SYMBOL_GPL (gnttab_empty_grant_references)
int	gnttab_claim_grant_reference (grant_ref_t *private_head)
	EXPORT_SYMBOL_GPL (gnttab_claim_grant_reference)
void	gnttab_release_grant_reference (grant_ref_t *private_head, grant_ref_t release)
	EXPORT_SYMBOL_GPL (gnttab_release_grant_reference)
void	gnttab_request_free_callback (struct gnttab_free_callback *callback, void(*fn)(void *), void *arg, u16 count)
	EXPORT_SYMBOL_GPL (gnttab_request_free_callback)
void	gnttab_cancel_free_callback (struct gnttab_free_callback *callback)
	EXPORT_SYMBOL_GPL (gnttab_cancel_free_callback)
unsigned int	gnttab_max_grant_frames (void)
	EXPORT_SYMBOL_GPL (gnttab_max_grant_frames)
void	gnttab_batch_map (struct gnttab_map_grant_ref *batch, unsigned count)
	EXPORT_SYMBOL_GPL (gnttab_batch_map)
void	gnttab_batch_copy (struct gnttab_copy *batch, unsigned count)
	EXPORT_SYMBOL_GPL (gnttab_batch_copy)
int	gnttab_map_refs (struct gnttab_map_grant_ref *map_ops, struct gnttab_map_grant_ref *kmap_ops, struct page **pages, unsigned int count)
	EXPORT_SYMBOL_GPL (gnttab_map_refs)
int	gnttab_unmap_refs (struct gnttab_unmap_grant_ref *unmap_ops, struct gnttab_map_grant_ref *kmap_ops, struct page **pages, unsigned int count)
	EXPORT_SYMBOL_GPL (gnttab_unmap_refs)
int	gnttab_resume (void)
int	gnttab_suspend (void)
int	gnttab_init (void)
	EXPORT_SYMBOL_GPL (gnttab_init)
	core_initcall (__gnttab_init)

Variables
unsigned long	xen_hvm_resume_frames

Macro Definition Documentation

#define gnttab_entry

(

entry

)

(*__gnttab_entry(entry))

Definition at line 170 of file grant-table.c.

#define GNTTAB_LIST_END   0xffffffff

Definition at line 58 of file grant-table.c.

#define GREFS_PER_GRANT_FRAME

Value:

(grant_table_version == 1 ?                      \
(PAGE_SIZE / sizeof(struct grant_entry_v1)) :   \
(PAGE_SIZE / sizeof(union grant_entry_v2)))

Definition at line 59 of file grant-table.c.

#define MAX_DELAY   256

Definition at line 828 of file grant-table.c.

#define NR_RESERVED_ENTRIES   8

Definition at line 57 of file grant-table.c.

#define RPP   (PAGE_SIZE / sizeof(grant_ref_t))

Definition at line 162 of file grant-table.c.

#define SPP   (PAGE_SIZE / sizeof(grant_status_t))

Definition at line 163 of file grant-table.c.

Function Documentation

core_initcall

(

__gnttab_init

)

EXPORT_SYMBOL_GPL

(

xen_hvm_resume_frames

)

EXPORT_SYMBOL_GPL

(

gnttab_grant_foreign_access_ref

)

EXPORT_SYMBOL_GPL

(

gnttab_grant_foreign_access

)

EXPORT_SYMBOL_GPL

(

gnttab_grant_foreign_access_subpage_ref

)

EXPORT_SYMBOL_GPL

(

gnttab_grant_foreign_access_subpage

)

EXPORT_SYMBOL_GPL

(

gnttab_subpage_grants_available

)

EXPORT_SYMBOL_GPL

(

gnttab_grant_foreign_access_trans_ref

)

EXPORT_SYMBOL_GPL

(

gnttab_grant_foreign_access_trans

)

EXPORT_SYMBOL_GPL

(

gnttab_trans_grants_available

)

EXPORT_SYMBOL_GPL

(

gnttab_query_foreign_access

)

EXPORT_SYMBOL_GPL

(

gnttab_end_foreign_access_ref

)

EXPORT_SYMBOL_GPL

(

gnttab_end_foreign_access

)

EXPORT_SYMBOL_GPL

(

gnttab_grant_foreign_transfer

)

EXPORT_SYMBOL_GPL

(

gnttab_grant_foreign_transfer_ref

)

EXPORT_SYMBOL_GPL

(

gnttab_end_foreign_transfer_ref

)

EXPORT_SYMBOL_GPL

(

gnttab_end_foreign_transfer

)

EXPORT_SYMBOL_GPL

(

gnttab_free_grant_reference

)

EXPORT_SYMBOL_GPL

(

gnttab_free_grant_references

)

EXPORT_SYMBOL_GPL

(

gnttab_alloc_grant_references

)

EXPORT_SYMBOL_GPL

(

gnttab_empty_grant_references

)

EXPORT_SYMBOL_GPL

(

gnttab_claim_grant_reference

)

EXPORT_SYMBOL_GPL

(

gnttab_release_grant_reference

)

EXPORT_SYMBOL_GPL

(

gnttab_request_free_callback

)

EXPORT_SYMBOL_GPL

(

gnttab_cancel_free_callback

)

EXPORT_SYMBOL_GPL

(

gnttab_max_grant_frames

)

EXPORT_SYMBOL_GPL

(

gnttab_batch_map

)

EXPORT_SYMBOL_GPL

(

gnttab_batch_copy

)

EXPORT_SYMBOL_GPL

(

gnttab_map_refs

)

EXPORT_SYMBOL_GPL

(

gnttab_unmap_refs

)

EXPORT_SYMBOL_GPL

(

gnttab_init

)

int gnttab_alloc_grant_references	(	u16	count,
		grant_ref_t *	head
	)

Definition at line 694 of file grant-table.c.

void gnttab_batch_copy	(	struct gnttab_copy *	batch,
		unsigned	count
	)

Definition at line 860 of file grant-table.c.

void gnttab_batch_map	(	struct gnttab_map_grant_ref *	batch,
		unsigned	count
	)

Definition at line 847 of file grant-table.c.

void gnttab_cancel_free_callback

(

struct gnttab_free_callback *

callback

)

Definition at line 749 of file grant-table.c.

int gnttab_claim_grant_reference

(

grant_ref_t *

private_head

)

Definition at line 713 of file grant-table.c.

int gnttab_empty_grant_references

(

const grant_ref_t *

private_head

)

Definition at line 707 of file grant-table.c.

void gnttab_end_foreign_access	(	grant_ref_t	ref,
		int	readonly,
		unsigned long	page
	)

Definition at line 558 of file grant-table.c.

int gnttab_end_foreign_access_ref	(	grant_ref_t	ref,
		int	readonly
	)

Definition at line 466 of file grant-table.c.

unsigned long gnttab_end_foreign_transfer

(

grant_ref_t

ref

)

Definition at line 659 of file grant-table.c.

unsigned long gnttab_end_foreign_transfer_ref

(

grant_ref_t

ref

)

Definition at line 653 of file grant-table.c.

void gnttab_free_grant_reference

(

grant_ref_t

ref

)

Definition at line 667 of file grant-table.c.

void gnttab_free_grant_references

(

grant_ref_t

head

)

Definition at line 673 of file grant-table.c.

int gnttab_grant_foreign_access	(	domid_t	domid,
		unsigned long	frame,
		int	readonly
	)

Definition at line 275 of file grant-table.c.

void gnttab_grant_foreign_access_ref	(	grant_ref_t	ref,
		domid_t	domid,
		unsigned long	frame,
		int	readonly
	)

Definition at line 267 of file grant-table.c.

int gnttab_grant_foreign_access_subpage	(	domid_t	domid,
		unsigned long	frame,
		int	flags,
		unsigned	page_off,
		unsigned	length
	)

Definition at line 322 of file grant-table.c.

int gnttab_grant_foreign_access_subpage_ref	(	grant_ref_t	ref,
		domid_t	domid,
		unsigned long	frame,
		int	flags,
		unsigned	page_off,
		unsigned	length
	)

Definition at line 303 of file grant-table.c.

int gnttab_grant_foreign_access_trans	(	domid_t	domid,
		int	flags,
		domid_t	trans_domid,
		grant_ref_t	trans_gref
	)

Definition at line 379 of file grant-table.c.

int gnttab_grant_foreign_access_trans_ref	(	grant_ref_t	ref,
		domid_t	domid,
		int	flags,
		domid_t	trans_domid,
		grant_ref_t	trans_gref
	)

Definition at line 361 of file grant-table.c.

int gnttab_grant_foreign_transfer	(	domid_t	domid,
		unsigned long	pfn
	)

Definition at line 571 of file grant-table.c.

void gnttab_grant_foreign_transfer_ref	(	grant_ref_t	ref,
		domid_t	domid,
		unsigned long	pfn
	)

Definition at line 584 of file grant-table.c.

int gnttab_init

(

void

)

Definition at line 1187 of file grant-table.c.

int gnttab_map_refs	(	struct gnttab_map_grant_ref *	map_ops,
		struct gnttab_map_grant_ref *	kmap_ops,
		struct page **	pages,
		unsigned int	count
	)

Definition at line 873 of file grant-table.c.

unsigned int gnttab_max_grant_frames

(

void

)

Definition at line 817 of file grant-table.c.

int gnttab_query_foreign_access

(

grant_ref_t

ref

)

Definition at line 416 of file grant-table.c.

void gnttab_release_grant_reference	(	grant_ref_t *	private_head,
		grant_ref_t	release
	)

Definition at line 723 of file grant-table.c.

void gnttab_request_free_callback	(	struct gnttab_free_callback *	callback,
		void(*)(void *)	fn,
		void *	arg,
		u16	count
	)

Definition at line 731 of file grant-table.c.

int gnttab_resume

(

void

)

Definition at line 1136 of file grant-table.c.

bool gnttab_subpage_grants_available

(

void

)

Definition at line 343 of file grant-table.c.

int gnttab_suspend

(

void

)

Definition at line 1163 of file grant-table.c.

bool gnttab_trans_grants_available

(

void

)

Definition at line 400 of file grant-table.c.

int gnttab_unmap_refs	(	struct gnttab_unmap_grant_ref *	unmap_ops,
		struct gnttab_map_grant_ref *	kmap_ops,
		struct page **	pages,
		unsigned int	count
	)

Definition at line 925 of file grant-table.c.

Variable Documentation

void* addr

Definition at line 76 of file grant-table.c.

struct grant_entry_v1* v1

Definition at line 74 of file grant-table.c.

union grant_entry_v2* v2

Definition at line 75 of file grant-table.c.

unsigned long xen_hvm_resume_frames

Definition at line 70 of file grant-table.c.