1 files changed, 100 insertions, 0 deletions
diff --git a/OvmfPkg/Include/IndustryStandard/VirtioScsi.h b/OvmfPkg/Include/IndustryStandard/VirtioScsi.h
new file mode 100644
index 0000000000..59ce97e070
--- /dev/null
+++ b/OvmfPkg/Include/IndustryStandard/VirtioScsi.h
@@ -0,0 +1,100 @@
+/** @file
+
+  Virtio SCSI Host Device specific type and macro definitions corresponding to
+  the virtio-0.9.5 specification.
+
+  Copyright (C) 2012, Red Hat, Inc.
+
+  This program and the accompanying materials are licensed and made available
+  under the terms and conditions of the BSD License which accompanies this
+  distribution. The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
+  WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _VIRTIO_SCSI_H_
+#define _VIRTIO_SCSI_H_
+
+#include <IndustryStandard/Virtio.h>
+
+
+//
+// virtio-0.9.5, Appendix I: SCSI Host Device
+//
+#pragma pack(1)
+typedef struct {
+  VIRTIO_HDR Generic;
+  UINT32     VhdrNumQueues;
+  UINT32     VhdrSegMax;
+  UINT32     VhdrMaxSectors;
+  UINT32     VhdrCmdPerLun;
+  UINT32     VhdrEventInfoSize;
+  UINT32     VhdrSenseSize;
+  UINT32     VhdrCdbSize;
+  UINT16     VhdrMaxChannel;
+  UINT16     VhdrMaxTarget;
+  UINT32     VhdrMaxLun;
+} VSCSI_HDR;
+#pragma pack()
+
+#define OFFSET_OF_VSCSI(Field) OFFSET_OF (VSCSI_HDR, Field)
+#define SIZE_OF_VSCSI(Field)   (sizeof ((VSCSI_HDR *) 0)->Field)
+
+#define VIRTIO_SCSI_F_INOUT   BIT0
+#define VIRTIO_SCSI_F_HOTPLUG BIT1
+
+//
+// We expect these maximum sizes from the host. Also we force the CdbLength and
+// SenseDataLength parameters of EFI_EXT_SCSI_PASS_THRU_PROTOCOL.PassThru() not
+// to exceed these limits. See UEFI 2.3.1 errata C 14.7.
+//
+#define VIRTIO_SCSI_CDB_SIZE   32
+#define VIRTIO_SCSI_SENSE_SIZE 96
+
+//
+// We pass the dynamically sized buffers ("dataout", "datain") in separate ring
+// descriptors.
+//
+#pragma pack(1)
+typedef struct {
+  UINT8  Lun[8];
+  UINT64 Id;
+  UINT8  TaskAttr;
+  UINT8  Prio;
+  UINT8  Crn;
+  UINT8  Cdb[VIRTIO_SCSI_CDB_SIZE];
+} VIRTIO_SCSI_REQ;
+
+typedef struct {
+  UINT32 SenseLen;
+  UINT32 Residual;
+  UINT16 StatusQualifier;
+  UINT8  Status;
+  UINT8  Response;
+  UINT8  Sense[VIRTIO_SCSI_SENSE_SIZE];
+} VIRTIO_SCSI_RESP;
+#pragma pack()
+
+//
+// selector of first virtio queue usable for request transfer
+//
+#define VIRTIO_SCSI_REQUEST_QUEUE 2
+
+//
+// host response codes
+//
+#define VIRTIO_SCSI_S_OK                0
+#define VIRTIO_SCSI_S_OVERRUN           1
+#define VIRTIO_SCSI_S_ABORTED           2
+#define VIRTIO_SCSI_S_BAD_TARGET        3
+#define VIRTIO_SCSI_S_RESET             4
+#define VIRTIO_SCSI_S_BUSY              5
+#define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6
+#define VIRTIO_SCSI_S_TARGET_FAILURE    7
+#define VIRTIO_SCSI_S_NEXUS_FAILURE     8
+#define VIRTIO_SCSI_S_FAILURE           9
+
+#endif // _VIRTIO_SCSI_H_