| 1 | /** @file
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| 2 |
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| 3 | Virtio SCSI Host Device specific type and macro definitions corresponding to
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| 4 | the virtio-0.9.5 specification.
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| 5 |
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| 6 | Copyright (C) 2012, Red Hat, Inc.
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| 7 |
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| 8 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 9 |
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| 10 | **/
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| 11 |
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| 12 | #ifndef _VIRTIO_SCSI_H_
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| 13 | #define _VIRTIO_SCSI_H_
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| 14 |
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| 15 | #include <IndustryStandard/Virtio.h>
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| 16 |
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| 17 | //
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| 18 | // virtio-0.9.5, Appendix I: SCSI Host Device
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| 19 | //
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| 20 | #pragma pack(1)
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| 21 | typedef struct {
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| 22 | UINT32 NumQueues;
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| 23 | UINT32 SegMax;
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| 24 | UINT32 MaxSectors;
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| 25 | UINT32 CmdPerLun;
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| 26 | UINT32 EventInfoSize;
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| 27 | UINT32 SenseSize;
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| 28 | UINT32 CdbSize;
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| 29 | UINT16 MaxChannel;
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| 30 | UINT16 MaxTarget;
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| 31 | UINT32 MaxLun;
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| 32 | } VIRTIO_SCSI_CONFIG;
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| 33 | #pragma pack()
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| 34 |
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| 35 | #define OFFSET_OF_VSCSI(Field) OFFSET_OF (VIRTIO_SCSI_CONFIG, Field)
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| 36 | #define SIZE_OF_VSCSI(Field) (sizeof ((VIRTIO_SCSI_CONFIG *) 0)->Field)
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| 37 |
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| 38 | #define VIRTIO_SCSI_F_INOUT BIT0
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| 39 | #define VIRTIO_SCSI_F_HOTPLUG BIT1
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| 40 |
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| 41 | //
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| 42 | // We expect these maximum sizes from the host. Also we force the CdbLength and
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| 43 | // SenseDataLength parameters of EFI_EXT_SCSI_PASS_THRU_PROTOCOL.PassThru() not
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| 44 | // to exceed these limits. See UEFI 2.3.1 errata C 14.7.
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| 45 | //
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| 46 | #define VIRTIO_SCSI_CDB_SIZE 32
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| 47 | #define VIRTIO_SCSI_SENSE_SIZE 96
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| 48 |
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| 49 | //
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| 50 | // We pass the dynamically sized buffers ("dataout", "datain") in separate ring
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| 51 | // descriptors.
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| 52 | //
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| 53 | #pragma pack(1)
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| 54 | typedef struct {
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| 55 | UINT8 Lun[8];
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| 56 | UINT64 Id;
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| 57 | UINT8 TaskAttr;
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| 58 | UINT8 Prio;
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| 59 | UINT8 Crn;
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| 60 | UINT8 Cdb[VIRTIO_SCSI_CDB_SIZE];
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| 61 | } VIRTIO_SCSI_REQ;
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| 62 |
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| 63 | typedef struct {
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| 64 | UINT32 SenseLen;
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| 65 | UINT32 Residual;
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| 66 | UINT16 StatusQualifier;
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| 67 | UINT8 Status;
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| 68 | UINT8 Response;
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| 69 | UINT8 Sense[VIRTIO_SCSI_SENSE_SIZE];
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| 70 | } VIRTIO_SCSI_RESP;
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| 71 | #pragma pack()
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| 72 |
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| 73 | //
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| 74 | // selector of first virtio queue usable for request transfer
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| 75 | //
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| 76 | #define VIRTIO_SCSI_REQUEST_QUEUE 2
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| 77 |
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| 78 | //
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| 79 | // host response codes
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| 80 | //
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| 81 | #define VIRTIO_SCSI_S_OK 0
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| 82 | #define VIRTIO_SCSI_S_OVERRUN 1
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| 83 | #define VIRTIO_SCSI_S_ABORTED 2
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| 84 | #define VIRTIO_SCSI_S_BAD_TARGET 3
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| 85 | #define VIRTIO_SCSI_S_RESET 4
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| 86 | #define VIRTIO_SCSI_S_BUSY 5
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| 87 | #define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6
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| 88 | #define VIRTIO_SCSI_S_TARGET_FAILURE 7
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| 89 | #define VIRTIO_SCSI_S_NEXUS_FAILURE 8
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| 90 | #define VIRTIO_SCSI_S_FAILURE 9
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| 91 |
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| 92 | #endif // _VIRTIO_SCSI_H_
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