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/** @file
BlockFront functions and types declarations.
Copyright (C) 2014, Citrix Ltd.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "XenPvBlkDxe.h"
#include <IndustryStandard/Xen/event_channel.h>
#include <IndustryStandard/Xen/io/blkif.h>
typedef struct _XEN_BLOCK_FRONT_DEVICE XEN_BLOCK_FRONT_DEVICE;
typedef struct _XEN_BLOCK_FRONT_IO XEN_BLOCK_FRONT_IO;
struct _XEN_BLOCK_FRONT_IO {
XEN_BLOCK_FRONT_DEVICE *Dev;
UINT8 *Buffer;
UINTN Size;
UINTN Sector; ///< 512 bytes sector.
grant_ref_t GrantRef[BLKIF_MAX_SEGMENTS_PER_REQUEST];
INT32 NumRef;
EFI_STATUS Status;
};
typedef struct {
UINT64 Sectors;
UINT32 SectorSize;
UINT32 VDiskInfo;
BOOLEAN ReadWrite;
BOOLEAN CdRom;
BOOLEAN FeatureBarrier;
BOOLEAN FeatureFlushCache;
} XEN_BLOCK_FRONT_MEDIA_INFO;
#define XEN_BLOCK_FRONT_SIGNATURE SIGNATURE_32 ('X', 'p', 'v', 'B')
struct _XEN_BLOCK_FRONT_DEVICE {
UINT32 Signature;
EFI_BLOCK_IO_PROTOCOL BlockIo;
domid_t DomainId;
blkif_front_ring_t Ring;
grant_ref_t RingRef;
evtchn_port_t EventChannel;
blkif_vdev_t DeviceId;
CONST CHAR8 *NodeName;
XEN_BLOCK_FRONT_MEDIA_INFO MediaInfo;
VOID *StateWatchToken;
XENBUS_PROTOCOL *XenBusIo;
};
#define XEN_BLOCK_FRONT_FROM_BLOCK_IO(b) \
CR (b, XEN_BLOCK_FRONT_DEVICE, BlockIo, XEN_BLOCK_FRONT_SIGNATURE)
EFI_STATUS
XenPvBlockFrontInitialization (
IN XENBUS_PROTOCOL *XenBusIo,
IN CONST CHAR8 *NodeName,
OUT XEN_BLOCK_FRONT_DEVICE **DevPtr
);
VOID
XenPvBlockFrontShutdown (
IN XEN_BLOCK_FRONT_DEVICE *Dev
);
VOID
XenPvBlockAsyncIo (
IN OUT XEN_BLOCK_FRONT_IO *IoData,
IN BOOLEAN IsWrite
);
EFI_STATUS
XenPvBlockIo (
IN OUT XEN_BLOCK_FRONT_IO *IoData,
IN BOOLEAN IsWrite
);
VOID
XenPvBlockAsyncIoPoll (
IN XEN_BLOCK_FRONT_DEVICE *Dev
);
VOID
XenPvBlockSync (
IN XEN_BLOCK_FRONT_DEVICE *Dev
);
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