Data Structures
struct	grant_entry_v1

struct	grant_entry_header

union	grant_entry_v2

struct	gnttab_map_grant_ref

struct	gnttab_unmap_grant_ref

Macros
#define	GNTTAB_NR_RESERVED_ENTRIES 8

#define	GNTTAB_RESERVED_CONSOLE 0

#define	GNTTAB_RESERVED_XENSTORE 1

#define	GTF_invalid (0U<<0)

#define	GTF_permit_access (1U<<0)

#define	GTF_accept_transfer (2U<<0)

#define	GTF_transitive (3U<<0)

#define	GTF_type_mask (3U<<0)

#define	_GTF_readonly (2)

#define	GTF_readonly (1U<<_GTF_readonly)

#define	_GTF_reading (3)

#define	GTF_reading (1U<<_GTF_reading)

#define	_GTF_writing (4)

#define	GTF_writing (1U<<_GTF_writing)

#define	_GTF_PWT (5)

#define	GTF_PWT (1U<<_GTF_PWT)

#define	_GTF_PCD (6)

#define	GTF_PCD (1U<<_GTF_PCD)

#define	_GTF_PAT (7)

#define	GTF_PAT (1U<<_GTF_PAT)

#define	_GTF_sub_page (8)

#define	GTF_sub_page (1U<<_GTF_sub_page)

#define	_GTF_transfer_committed (2)

#define	GTF_transfer_committed (1U<<_GTF_transfer_committed)

#define	_GTF_transfer_completed (3)

#define	GTF_transfer_completed (1U<<_GTF_transfer_completed)

#define	GNTTABOP_map_grant_ref 0

#define	GNTTABOP_unmap_grant_ref 1

#define	_GNTMAP_device_map (0)

#define	GNTMAP_device_map (1<<_GNTMAP_device_map)

#define	_GNTMAP_host_map (1)

#define	GNTMAP_host_map (1<<_GNTMAP_host_map)

#define	_GNTMAP_readonly (2)

#define	GNTMAP_readonly (1<<_GNTMAP_readonly)

#define	_GNTMAP_application_map (3)

#define	GNTMAP_application_map (1<<_GNTMAP_application_map)

#define	_GNTMAP_contains_pte (4)

#define	GNTMAP_contains_pte (1<<_GNTMAP_contains_pte)

#define	_GNTMAP_can_fail (5)

#define	GNTMAP_can_fail (1<<_GNTMAP_can_fail)

#define	_GNTMAP_guest_avail0 (16)

#define	GNTMAP_guest_avail_mask ((UINT32)~0 << _GNTMAP_guest_avail0)

#define	GNTST_okay (0) /* Normal return. */

#define	GNTST_general_error (-1) /* General undefined error. */

#define	GNTST_bad_domain (-2) /* Unrecognised domain id. */

#define	GNTST_bad_gntref (-3) /* Unrecognised or inappropriate gntref. */

#define	GNTST_bad_handle (-4) /* Unrecognised or inappropriate handle. */

#define	GNTST_bad_virt_addr (-5) /* Inappropriate virtual address to map. */

#define	GNTST_bad_dev_addr (-6) /* Inappropriate device address to unmap.*/

#define	GNTST_no_device_space (-7) /* Out of space in I/O MMU. */

#define	GNTST_permission_denied (-8) /* Not enough privilege for operation. */

#define	GNTST_bad_page (-9) /* Specified page was invalid for op. */

#define	GNTST_bad_copy_arg (-10) /* copy arguments cross page boundary. */

#define	GNTST_address_too_big (-11) /* transfer page address too large. */

#define	GNTST_eagain (-12) /* Operation not done; try again. */

#define	GNTTABOP_error_msgs

Typedefs
typedef UINT32	grant_ref_t

typedef struct grant_entry_v1	grant_entry_v1_t

typedef struct grant_entry_header	grant_entry_header_t

typedef union grant_entry_v2	grant_entry_v2_t

typedef UINT16	grant_status_t

typedef UINT32	grant_handle_t

typedef struct gnttab_map_grant_ref	gnttab_map_grant_ref_t

typedef struct gnttab_unmap_grant_ref	gnttab_unmap_grant_ref_t

Functions
	DEFINE_XEN_GUEST_HANDLE (gnttab_map_grant_ref_t)

	DEFINE_XEN_GUEST_HANDLE (gnttab_unmap_grant_ref_t)

Macro Definition Documentation

#define _GNTMAP_application_map (3)

#define _GNTMAP_can_fail (5)

#define _GNTMAP_contains_pte (4)

#define _GNTMAP_device_map (0)

#define _GNTMAP_guest_avail0 (16)

#define _GNTMAP_host_map (1)

#define _GNTMAP_readonly (2)

#define _GTF_PAT (7)

#define _GTF_PCD (6)

#define _GTF_PWT (5)

#define _GTF_reading (3)

#define _GTF_readonly (2)

#define _GTF_sub_page (8)

#define _GTF_transfer_committed (2)

#define _GTF_transfer_completed (3)

#define _GTF_writing (4)

#define GNTMAP_application_map (1<<_GNTMAP_application_map)

#define GNTMAP_can_fail (1<<_GNTMAP_can_fail)

#define GNTMAP_contains_pte (1<<_GNTMAP_contains_pte)

#define GNTMAP_device_map (1<<_GNTMAP_device_map)

#define GNTMAP_guest_avail_mask ((UINT32)~0 << _GNTMAP_guest_avail0)

#define GNTMAP_host_map (1<<_GNTMAP_host_map)

#define GNTMAP_readonly (1<<_GNTMAP_readonly)

#define GNTST_address_too_big (-11) /* transfer page address too large. */

#define GNTST_bad_copy_arg (-10) /* copy arguments cross page boundary. */

#define GNTST_bad_dev_addr (-6) /* Inappropriate device address to unmap.*/

#define GNTST_bad_domain (-2) /* Unrecognised domain id. */

#define GNTST_bad_gntref (-3) /* Unrecognised or inappropriate gntref. */

#define GNTST_bad_handle (-4) /* Unrecognised or inappropriate handle. */

#define GNTST_bad_page (-9) /* Specified page was invalid for op. */

#define GNTST_bad_virt_addr (-5) /* Inappropriate virtual address to map. */

#define GNTST_eagain (-12) /* Operation not done; try again. */

#define GNTST_general_error (-1) /* General undefined error. */

#define GNTST_no_device_space (-7) /* Out of space in I/O MMU. */

#define GNTST_okay (0) /* Normal return. */

#define GNTST_permission_denied (-8) /* Not enough privilege for operation. */

#define GNTTAB_NR_RESERVED_ENTRIES 8

#define GNTTAB_RESERVED_CONSOLE 0

#define GNTTAB_RESERVED_XENSTORE 1

#define GNTTABOP_error_msgs

Value:

{                   \
    "okay",                                     \
    "undefined error",                          \
    "unrecognised domain id",                   \
    "invalid grant reference",                  \
    "invalid mapping handle",                   \
    "invalid virtual address",                  \
    "invalid device address",                   \
    "no spare translation slot in the I/O MMU", \
    "permission denied",                        \
    "bad page",                                 \
    "copy arguments cross page boundary",       \
    "page address size too large",              \
    "operation not done; try again"             \
}