1 files changed, 307 insertions, 0 deletions
diff --git a/drivers/staging/hv/include/vstorage.h b/drivers/staging/hv/include/vstorage.h
new file mode 100644
index 000000000000..33646e76da7c
--- /dev/null
+++ b/drivers/staging/hv/include/vstorage.h
@@ -0,0 +1,307 @@
+/*
+ *
+ * Copyright (c) 2009, Microsoft Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Authors:
+ *   Haiyang Zhang <haiyangz@microsoft.com>
+ *   Hank Janssen  <hjanssen@microsoft.com>
+ *
+ */
+
+
+#pragma once
+
+/* #include <vmbuspacketformat.h> */
+/* #include <ntddscsi.h> */
+
+#define C_ASSERT(x)
+
+/*  public interface to the server */
+
+
+
+/*  Storvsp device interface guid */
+
+
+
+
+/*  Protocol versions. */
+
+
+
+/* vstorage.w revision number.  This is used in the case of a version match, */
+/* to alert the user that structure sizes may be mismatched even though the */
+/* protocol versions match. */
+
+
+#define REVISION_STRING(REVISION_) #REVISION_
+#define FILL_VMSTOR_REVISION(RESULT_LVALUE_)                     \
+{                                                                \
+    char *revisionString = REVISION_STRING($Revision: 6 $) + 11; \
+    RESULT_LVALUE_ = 0;                                          \
+    while (*revisionString >= '0' && *revisionString <= '9')     \
+    {                                                            \
+	RESULT_LVALUE_ *= 10;                                    \
+	RESULT_LVALUE_ += *revisionString - '0';                 \
+	revisionString++;                                        \
+    }                                                            \
+}
+
+
+/* Major/minor macros.  Minor version is in LSB, meaning that earlier flat */
+/* version numbers will be interpreted as "0.x" (i.e., 1 becomes 0.1). */
+
+
+#define VMSTOR_PROTOCOL_MAJOR(VERSION_)         (((VERSION_) >> 8) & 0xff)
+#define VMSTOR_PROTOCOL_MINOR(VERSION_)         (((VERSION_)     ) & 0xff)
+#define VMSTOR_PROTOCOL_VERSION(MAJOR_, MINOR_) ((((MAJOR_) & 0xff) << 8) | \
+						 (((MINOR_) & 0xff)     ))
+
+
+/* Invalid version. */
+
+
+#define VMSTOR_INVALID_PROTOCOL_VERSION  -1
+
+
+/* Version history: */
+/* V1 Beta                    0.1 */
+/* V1 RC < 2008/1/31          1.0 */
+/* V1 RC > 2008/1/31          2.0 */
+
+#define VMSTOR_PROTOCOL_VERSION_CURRENT VMSTOR_PROTOCOL_VERSION(2, 0)
+
+
+
+/*  This will get replaced with the max transfer length that is possible on */
+/*  the host adapter. */
+/*  The max transfer length will be published when we offer a vmbus channel. */
+
+
+#define MAX_TRANSFER_LENGTH 0x40000
+#define DEFAULT_PACKET_SIZE (sizeof(VMDATA_GPA_DIRECT) +                            \
+			     sizeof(VSTOR_PACKET) +                                 \
+			     (sizeof(u64) * (MAX_TRANSFER_LENGTH / PAGE_SIZE)))
+
+
+
+
+/*  Packet structure describing virtual storage requests. */
+
+
+typedef enum
+{
+    VStorOperationCompleteIo            = 1,
+    VStorOperationRemoveDevice          = 2,
+    VStorOperationExecuteSRB            = 3,
+    VStorOperationResetLun              = 4,
+    VStorOperationResetAdapter          = 5,
+    VStorOperationResetBus              = 6,
+    VStorOperationBeginInitialization   = 7,
+    VStorOperationEndInitialization     = 8,
+    VStorOperationQueryProtocolVersion  = 9,
+    VStorOperationQueryProperties       = 10,
+    VStorOperationMaximum               = 10
+
+} VSTOR_PACKET_OPERATION;
+
+
+
+/*  Platform neutral description of a scsi request - */
+/*  this remains the same across the write regardless of 32/64 bit */
+/*  note: it's patterned off the SCSI_PASS_THROUGH structure */
+
+
+
+#pragma pack(push,1)
+
+
+#define CDB16GENERIC_LENGTH 0x10
+
+#ifndef SENSE_BUFFER_SIZE
+#define SENSE_BUFFER_SIZE 0x12
+#endif
+C_ASSERT(SENSE_BUFFER_SIZE == 0x12);
+
+#define MAX_DATA_BUFFER_LENGTH_WITH_PADDING 0x14
+
+
+typedef struct
+{
+    unsigned short Length;
+    unsigned char SrbStatus;
+    unsigned char ScsiStatus;
+
+    unsigned char PortNumber;
+    unsigned char PathId;
+    unsigned char TargetId;
+    unsigned char Lun;
+
+    unsigned char CdbLength;
+    unsigned char SenseInfoLength;
+    unsigned char DataIn;
+    unsigned char Reserved;
+
+    unsigned int DataTransferLength;
+
+    union
+    {
+	unsigned char Cdb[CDB16GENERIC_LENGTH];
+
+	unsigned char SenseData[SENSE_BUFFER_SIZE];
+
+	unsigned char ReservedArray[MAX_DATA_BUFFER_LENGTH_WITH_PADDING];
+    };
+
+} VMSCSI_REQUEST, *PVMSCSI_REQUEST;
+
+C_ASSERT((sizeof(VMSCSI_REQUEST) % 4) == 0);
+
+
+
+/*  This structure is sent during the intialization phase to get the different */
+/*  properties of the channel. */
+
+
+typedef struct
+{
+    unsigned short ProtocolVersion;
+    unsigned char  PathId;
+    unsigned char  TargetId;
+
+
+    /* Note: port number is only really known on the client side */
+
+    unsigned int  PortNumber;
+
+    unsigned int  Flags;
+
+    unsigned int  MaxTransferBytes;
+
+
+    /*  This id is unique for each channel and will correspond with */
+    /*  vendor specific data in the inquirydata */
+
+
+    unsigned long long UniqueId;
+
+} VMSTORAGE_CHANNEL_PROPERTIES, *PVMSTORAGE_CHANNEL_PROPERTIES;
+
+C_ASSERT((sizeof(VMSTORAGE_CHANNEL_PROPERTIES) % 4) == 0);
+
+
+
+/*  This structure is sent during the storage protocol negotiations. */
+
+
+typedef struct
+{
+
+    /* Major (MSW) and minor (LSW) version numbers. */
+
+
+    unsigned short MajorMinor;
+
+
+
+    /* Revision number is auto-incremented whenever this file is changed */
+    /* (See FILL_VMSTOR_REVISION macro above).  Mismatch does not definitely */
+    /* indicate incompatibility--but it does indicate mismatched builds. */
+
+
+    unsigned short Revision;
+
+} VMSTORAGE_PROTOCOL_VERSION, *PVMSTORAGE_PROTOCOL_VERSION;
+
+C_ASSERT((sizeof(VMSTORAGE_PROTOCOL_VERSION) % 4) == 0);
+
+
+
+/* Channel Property Flags */
+
+
+#define STORAGE_CHANNEL_REMOVABLE_FLAG                  0x1
+#define STORAGE_CHANNEL_EMULATED_IDE_FLAG               0x2
+
+
+typedef struct _VSTOR_PACKET
+{
+
+    /* Requested operation type */
+
+
+    VSTOR_PACKET_OPERATION Operation;
+
+
+    /*  Flags - see below for values */
+
+
+    unsigned int     Flags;
+
+
+    /* Status of the request returned from the server side. */
+
+
+    unsigned int     Status;
+
+
+    /* Data payload area */
+
+
+    union
+    {
+
+	/*  Structure used to forward SCSI commands from the client to the server. */
+
+
+	VMSCSI_REQUEST VmSrb;
+
+
+	/* Structure used to query channel properties. */
+
+
+	VMSTORAGE_CHANNEL_PROPERTIES StorageChannelProperties;
+
+
+	/* Used during version negotiations. */
+
+
+	VMSTORAGE_PROTOCOL_VERSION Version;
+    };
+
+} VSTOR_PACKET, *PVSTOR_PACKET;
+
+C_ASSERT((sizeof(VSTOR_PACKET) % 4) == 0);
+
+
+/*  Packet flags */
+
+
+
+/*  This flag indicates that the server should send back a completion for this */
+/*  packet. */
+
+
+#define REQUEST_COMPLETION_FLAG 0x1
+
+
+/*  This is the set of flags that the vsc can set in any packets it sends */
+
+
+#define VSC_LEGAL_FLAGS (REQUEST_COMPLETION_FLAG)
+
+
+#pragma pack(pop)