96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
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/** @file
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BlockFront functions and types declarations.
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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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#include "XenPvBlkDxe.h"
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#include <IndustryStandard/Xen/event_channel.h>
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#include <IndustryStandard/Xen/io/blkif.h>
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typedef struct _XEN_BLOCK_FRONT_DEVICE XEN_BLOCK_FRONT_DEVICE;
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typedef struct _XEN_BLOCK_FRONT_IO XEN_BLOCK_FRONT_IO;
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struct _XEN_BLOCK_FRONT_IO
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{
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XEN_BLOCK_FRONT_DEVICE *Dev;
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UINT8 *Buffer;
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UINTN Size;
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UINTN Sector; ///< 512 bytes sector.
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grant_ref_t GrantRef[BLKIF_MAX_SEGMENTS_PER_REQUEST];
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INT32 NumRef;
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EFI_STATUS Status;
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};
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typedef struct
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{
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UINT64 Sectors;
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UINT32 SectorSize;
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UINT32 VDiskInfo;
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BOOLEAN ReadWrite;
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BOOLEAN CdRom;
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BOOLEAN FeatureBarrier;
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BOOLEAN FeatureFlushCache;
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} XEN_BLOCK_FRONT_MEDIA_INFO;
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#define XEN_BLOCK_FRONT_SIGNATURE SIGNATURE_32 ('X', 'p', 'v', 'B')
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struct _XEN_BLOCK_FRONT_DEVICE {
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UINT32 Signature;
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EFI_BLOCK_IO_PROTOCOL BlockIo;
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domid_t DomainId;
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blkif_front_ring_t Ring;
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grant_ref_t RingRef;
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evtchn_port_t EventChannel;
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blkif_vdev_t DeviceId;
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CONST CHAR8 *NodeName;
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XEN_BLOCK_FRONT_MEDIA_INFO MediaInfo;
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VOID *StateWatchToken;
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XENBUS_PROTOCOL *XenBusIo;
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};
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#define XEN_BLOCK_FRONT_FROM_BLOCK_IO(b) \
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CR (b, XEN_BLOCK_FRONT_DEVICE, BlockIo, XEN_BLOCK_FRONT_SIGNATURE)
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EFI_STATUS
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XenPvBlockFrontInitialization (
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IN XENBUS_PROTOCOL *XenBusIo,
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IN CONST CHAR8 *NodeName,
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OUT XEN_BLOCK_FRONT_DEVICE **DevPtr
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);
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VOID
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XenPvBlockFrontShutdown (
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IN XEN_BLOCK_FRONT_DEVICE *Dev
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);
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VOID
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XenPvBlockAsyncIo (
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IN OUT XEN_BLOCK_FRONT_IO *IoData,
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IN BOOLEAN IsWrite
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);
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EFI_STATUS
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XenPvBlockIo (
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IN OUT XEN_BLOCK_FRONT_IO *IoData,
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IN BOOLEAN IsWrite
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);
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VOID
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XenPvBlockAsyncIoPoll (
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IN XEN_BLOCK_FRONT_DEVICE *Dev
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);
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VOID
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XenPvBlockSync (
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IN XEN_BLOCK_FRONT_DEVICE *Dev
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);
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