mirror of https://github.com/acidanthera/audk.git
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/** @file
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Virtio SCSI Host Device specific type and macro definitions corresponding to
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the virtio-0.9.5 specification.
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Copyright (C) 2012, Red Hat, Inc.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _VIRTIO_SCSI_H_
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#define _VIRTIO_SCSI_H_
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#include <IndustryStandard/Virtio.h>
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//
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// virtio-0.9.5, Appendix I: SCSI Host Device
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//
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#pragma pack(1)
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typedef struct {
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UINT32 NumQueues;
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UINT32 SegMax;
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UINT32 MaxSectors;
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UINT32 CmdPerLun;
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UINT32 EventInfoSize;
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UINT32 SenseSize;
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UINT32 CdbSize;
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UINT16 MaxChannel;
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UINT16 MaxTarget;
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UINT32 MaxLun;
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} VIRTIO_SCSI_CONFIG;
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#pragma pack()
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#define OFFSET_OF_VSCSI(Field) OFFSET_OF (VIRTIO_SCSI_CONFIG, Field)
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#define SIZE_OF_VSCSI(Field) (sizeof ((VIRTIO_SCSI_CONFIG *) 0)->Field)
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#define VIRTIO_SCSI_F_INOUT BIT0
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#define VIRTIO_SCSI_F_HOTPLUG BIT1
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//
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// We expect these maximum sizes from the host. Also we force the CdbLength and
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// SenseDataLength parameters of EFI_EXT_SCSI_PASS_THRU_PROTOCOL.PassThru() not
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// to exceed these limits. See UEFI 2.3.1 errata C 14.7.
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//
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#define VIRTIO_SCSI_CDB_SIZE 32
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#define VIRTIO_SCSI_SENSE_SIZE 96
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//
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// We pass the dynamically sized buffers ("dataout", "datain") in separate ring
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// descriptors.
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//
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#pragma pack(1)
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typedef struct {
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UINT8 Lun[8];
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UINT64 Id;
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UINT8 TaskAttr;
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UINT8 Prio;
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UINT8 Crn;
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UINT8 Cdb[VIRTIO_SCSI_CDB_SIZE];
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} VIRTIO_SCSI_REQ;
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typedef struct {
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UINT32 SenseLen;
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UINT32 Residual;
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UINT16 StatusQualifier;
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UINT8 Status;
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UINT8 Response;
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UINT8 Sense[VIRTIO_SCSI_SENSE_SIZE];
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} VIRTIO_SCSI_RESP;
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#pragma pack()
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//
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// selector of first virtio queue usable for request transfer
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//
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#define VIRTIO_SCSI_REQUEST_QUEUE 2
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//
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// host response codes
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//
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#define VIRTIO_SCSI_S_OK 0
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#define VIRTIO_SCSI_S_OVERRUN 1
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#define VIRTIO_SCSI_S_ABORTED 2
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#define VIRTIO_SCSI_S_BAD_TARGET 3
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#define VIRTIO_SCSI_S_RESET 4
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#define VIRTIO_SCSI_S_BUSY 5
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#define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6
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#define VIRTIO_SCSI_S_TARGET_FAILURE 7
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#define VIRTIO_SCSI_S_NEXUS_FAILURE 8
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#define VIRTIO_SCSI_S_FAILURE 9
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#endif // _VIRTIO_SCSI_H_
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