b26f0cf9ee
https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/** @file
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Grant Table function declaration.
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Grant Table are used to grant access to certain page of the current
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VM to an other VM.
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Copyright (C) 2014, Citrix Ltd.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __GNTTAB_H__
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#define __GNTTAB_H__
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#include <IndustryStandard/Xen/grant_table.h>
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/**
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Initialize the Grant Table at the address MmioAddr.
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@param Dev A pointer to XENBUS_DEVICE.
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@param MmioAddr An address where the grant table can be mapped into
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the guest.
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**/
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VOID
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XenGrantTableInit (
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IN XENBUS_DEVICE *Dev
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);
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/**
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Desinitilize the Grant Table.
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**/
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VOID
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XenGrantTableDeinit (
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IN XENBUS_DEVICE *Dev
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);
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/**
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Grant access to the page Frame to the domain DomainId.
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@param This A pointer to XENBUS_PROTOCOL instance.
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@param DomainId ID of the domain to grant acces to.
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@param Frame Frame Number of the page to grant access to.
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@param ReadOnly Provide read-only or read-write access.
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@param RefPtr Reference number of the grant will be written to this pointer.
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**/
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EFI_STATUS
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EFIAPI
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XenBusGrantAccess (
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IN XENBUS_PROTOCOL *This,
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IN domid_t DomainId,
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IN UINTN Frame, // MFN
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IN BOOLEAN ReadOnly,
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OUT grant_ref_t *RefPtr
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);
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/**
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End access to grant Ref, previously return by XenBusGrantAccess.
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@param This A pointer to XENBUS_PROTOCOL instance.
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@param Ref Reference numeber of a grant previously returned by
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XenBusGrantAccess.
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**/
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EFI_STATUS
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EFIAPI
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XenBusGrantEndAccess (
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IN XENBUS_PROTOCOL *This,
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IN grant_ref_t Ref
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);
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#endif /* !__GNTTAB_H__ */
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