| 1 | /** @file
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| 2 | Grant Table function declaration.
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| 3 |
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| 4 | Grant Table are used to grant access to certain page of the current
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| 5 | VM to an other VM.
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| 6 |
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| 7 | Copyright (C) 2014, Citrix Ltd.
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| 8 |
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| 9 | This program and the accompanying materials
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| 10 | are licensed and made available under the terms and conditions of the BSD License
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| 11 | which accompanies this distribution. The full text of the license may be found at
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| 12 | http://opensource.org/licenses/bsd-license.php
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| 13 |
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| 14 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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| 15 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| 16 |
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| 17 | **/
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| 18 | #ifndef __GNTTAB_H__
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| 19 | #define __GNTTAB_H__
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| 20 |
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| 21 | #include <IndustryStandard/Xen/grant_table.h>
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| 22 |
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| 23 | /**
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| 24 | Initialize the Grant Table at the address MmioAddr.
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| 25 |
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| 26 | @param Dev A pointer to XENBUS_DEVICE.
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| 27 | @param MmioAddr An address where the grant table can be mapped into
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| 28 | the guest.
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| 29 | **/
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| 30 | VOID
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| 31 | XenGrantTableInit (
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| 32 | IN XENBUS_DEVICE *Dev
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| 33 | );
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| 34 |
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| 35 | /**
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| 36 | Desinitilize the Grant Table.
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| 37 | **/
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| 38 | VOID
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| 39 | XenGrantTableDeinit (
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| 40 | IN XENBUS_DEVICE *Dev
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| 41 | );
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| 42 |
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| 43 | /**
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| 44 | Grant access to the page Frame to the domain DomainId.
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| 45 |
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| 46 | @param This A pointer to XENBUS_PROTOCOL instance.
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| 47 | @param DomainId ID of the domain to grant acces to.
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| 48 | @param Frame Frame Number of the page to grant access to.
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| 49 | @param ReadOnly Provide read-only or read-write access.
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| 50 | @param RefPtr Reference number of the grant will be written to this pointer.
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| 51 | **/
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| 52 | EFI_STATUS
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| 53 | EFIAPI
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| 54 | XenBusGrantAccess (
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| 55 | IN XENBUS_PROTOCOL *This,
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| 56 | IN domid_t DomainId,
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| 57 | IN UINTN Frame, // MFN
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| 58 | IN BOOLEAN ReadOnly,
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| 59 | OUT grant_ref_t *RefPtr
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| 60 | );
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| 61 |
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| 62 | /**
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| 63 | End access to grant Ref, previously return by XenBusGrantAccess.
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| 64 |
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| 65 | @param This A pointer to XENBUS_PROTOCOL instance.
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| 66 | @param Ref Reference numeber of a grant previously returned by
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| 67 | XenBusGrantAccess.
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| 68 | **/
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| 69 | EFI_STATUS
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| 70 | EFIAPI
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| 71 | XenBusGrantEndAccess (
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| 72 | IN XENBUS_PROTOCOL *This,
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| 73 | IN grant_ref_t Ref
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| 74 | );
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| 75 |
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| 76 | #endif /* !__GNTTAB_H__ */
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