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| author | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-10-18 17:07:48 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-10-18 17:07:48 +0000 |
| commit | 37078a63b1911f8b320bab6d82a2183a84f8858c (patch) | |
| tree | 24a41498cbc71c56d911d353a1e8f353a7b8ba43 /OvmfPkg/Include | |
| parent | c8c2e4d61339592056931dff5c209b7d06fb466c (diff) | |
| download | edk2-37078a63b1911f8b320bab6d82a2183a84f8858c.tar.gz edk2-37078a63b1911f8b320bab6d82a2183a84f8858c.tar.bz2 edk2-37078a63b1911f8b320bab6d82a2183a84f8858c.zip | |
OvmfPkg: introduce virtio-scsi driver
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
[jordan.l.justen@intel.com: fix build for VS2012]
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13867 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OvmfPkg/Include')
| -rw-r--r-- | OvmfPkg/Include/IndustryStandard/VirtioScsi.h | 100 |
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_
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