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- /** @file
- Grant Table function declaration.
- Grant Table are used to grant access to certain page of the current
- VM to an other VM.
- Copyright (C) 2014, Citrix Ltd.
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #ifndef __GNTTAB_H__
- #define __GNTTAB_H__
- #include <IndustryStandard/Xen/grant_table.h>
- /**
- Initialize the Grant Table at the address MmioAddr.
- @param Dev A pointer to XENBUS_DEVICE.
- @param MmioAddr An address where the grant table can be mapped into
- the guest.
- **/
- VOID
- XenGrantTableInit (
- IN XENBUS_DEVICE *Dev
- );
- /**
- De-initialize the Grant Table.
- **/
- VOID
- XenGrantTableDeinit (
- IN XENBUS_DEVICE *Dev
- );
- /**
- Grant access to the page Frame to the domain DomainId.
- @param This A pointer to XENBUS_PROTOCOL instance.
- @param DomainId ID of the domain to grant access to.
- @param Frame Frame Number of the page to grant access to.
- @param ReadOnly Provide read-only or read-write access.
- @param RefPtr Reference number of the grant will be written to this pointer.
- **/
- EFI_STATUS
- EFIAPI
- XenBusGrantAccess (
- IN XENBUS_PROTOCOL *This,
- IN domid_t DomainId,
- IN UINTN Frame, // MFN
- IN BOOLEAN ReadOnly,
- OUT grant_ref_t *RefPtr
- );
- /**
- End access to grant Ref, previously return by XenBusGrantAccess.
- @param This A pointer to XENBUS_PROTOCOL instance.
- @param Ref Reference numeber of a grant previously returned by
- XenBusGrantAccess.
- **/
- EFI_STATUS
- EFIAPI
- XenBusGrantEndAccess (
- IN XENBUS_PROTOCOL *This,
- IN grant_ref_t Ref
- );
- #endif /* !__GNTTAB_H__ */
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