1 files changed, 320 insertions, 0 deletions
diff --git a/drivers/staging/hv/include/VmbusPacketFormat.h b/drivers/staging/hv/include/VmbusPacketFormat.h
new file mode 100644
index 000000000000..f6600a995519
--- /dev/null
+++ b/drivers/staging/hv/include/VmbusPacketFormat.h
@@ -0,0 +1,320 @@
+/*
+ *
+ * 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
+
+/* #ifndef PAGE_SIZE */
+/* #if defined(_IA64_) */
+/* #error This does not work for IA64 */
+/* #else */
+/* #define PAGE_SIZE 0x1000 */
+/* #endif */
+/* #endif */
+
+/* allow nameless unions */
+/* #pragma warning(disable : 4201) */
+
+typedef struct
+{
+    union
+    {
+	struct
+	{
+	    volatile u32  In;        /* Offset in bytes from the ring base */
+	    volatile u32  Out;       /* Offset in bytes from the ring base */
+	};
+	volatile long long InOut;
+    };
+
+
+    /* If the receiving endpoint sets this to some non-zero value, the sending */
+    /* endpoint should not send any interrupts. */
+
+
+    volatile u32 InterruptMask;
+
+} VMRCB, *PVMRCB;
+
+typedef struct
+{
+    union
+    {
+	struct
+	{
+	    VMRCB Control;
+	};
+
+	u8 Reserved[PAGE_SIZE];
+    };
+
+
+    /* Beginning of the ring data.  Note: It must be guaranteed that */
+    /* this data does not share a page with the control structure. */
+
+    u8 Data[1];
+} VMRING, *PVMRING;
+
+#pragma pack(push, 1)
+
+typedef struct
+{
+    u16 Type;
+    u16 DataOffset8;
+    u16 Length8;
+    u16 Flags;
+    u64 TransactionId;
+} VMPACKET_DESCRIPTOR, *PVMPACKET_DESCRIPTOR;
+
+typedef u32 PREVIOUS_PACKET_OFFSET, *PPREVIOUS_PACKET_OFFSET;
+
+typedef struct
+{
+    PREVIOUS_PACKET_OFFSET  PreviousPacketStartOffset;
+    VMPACKET_DESCRIPTOR     Descriptor;
+} VMPACKET_HEADER, *PVMPACKET_HEADER;
+
+typedef struct
+{
+    u32  ByteCount;
+    u32  ByteOffset;
+} VMTRANSFER_PAGE_RANGE, *PVMTRANSFER_PAGE_RANGE;
+
+#ifdef __cplusplus
+
+typedef struct _VMTRANSFER_PAGE_PACKET_HEADER : VMPACKET_DESCRIPTOR {
+
+#else
+
+typedef struct VMTRANSFER_PAGE_PACKET_HEADER {
+
+    VMPACKET_DESCRIPTOR d;
+
+#endif
+
+    u16                  TransferPageSetId;
+    bool                 SenderOwnsSet;
+    u8                   Reserved;
+    u32                  RangeCount;
+    VMTRANSFER_PAGE_RANGE   Ranges[1];
+
+} VMTRANSFER_PAGE_PACKET_HEADER, *PVMTRANSFER_PAGE_PACKET_HEADER;
+
+
+#ifdef __cplusplus
+
+typedef struct _VMGPADL_PACKET_HEADER : VMPACKET_DESCRIPTOR {
+
+#else
+
+typedef struct _VMGPADL_PACKET_HEADER {
+
+    VMPACKET_DESCRIPTOR d;
+
+#endif
+
+
+    u32  Gpadl;
+    u32  Reserved;
+
+} VMGPADL_PACKET_HEADER, *PVMGPADL_PACKET_HEADER;
+
+#ifdef __cplusplus
+
+typedef struct _VMADD_REMOVE_TRANSFER_PAGE_SET : VMPACKET_DESCRIPTOR {
+
+#else
+
+typedef struct _VMADD_REMOVE_TRANSFER_PAGE_SET {
+
+    VMPACKET_DESCRIPTOR d;
+
+#endif
+
+    u32  Gpadl;
+    u16  TransferPageSetId;
+    u16  Reserved;
+
+} VMADD_REMOVE_TRANSFER_PAGE_SET, *PVMADD_REMOVE_TRANSFER_PAGE_SET;
+
+#pragma pack(pop)
+
+
+/* This structure defines a range in guest physical space that can be made */
+/* to look virtually contiguous. */
+
+
+typedef struct _GPA_RANGE {
+
+    u32  ByteCount;
+    u32  ByteOffset;
+    u64  PfnArray[0];
+
+} GPA_RANGE, *PGPA_RANGE;
+
+
+
+#pragma pack(push, 1)
+
+
+/* This is the format for an Establish Gpadl packet, which contains a handle */
+/* by which this GPADL will be known and a set of GPA ranges associated with */
+/* it.  This can be converted to a MDL by the guest OS.  If there are multiple */
+/* GPA ranges, then the resulting MDL will be "chained," representing multiple */
+/* VA ranges. */
+
+
+#ifdef __cplusplus
+
+typedef struct _VMESTABLISH_GPADL : VMPACKET_DESCRIPTOR {
+
+#else
+
+typedef struct _VMESTABLISH_GPADL {
+
+    VMPACKET_DESCRIPTOR d;
+
+#endif
+
+    u32      Gpadl;
+    u32      RangeCount;
+    GPA_RANGE   Range[1];
+
+} VMESTABLISH_GPADL, *PVMESTABLISH_GPADL;
+
+
+
+/* This is the format for a Teardown Gpadl packet, which indicates that the */
+/* GPADL handle in the Establish Gpadl packet will never be referenced again. */
+
+
+#ifdef __cplusplus
+
+typedef struct _VMTEARDOWN_GPADL : VMPACKET_DESCRIPTOR {
+
+#else
+
+typedef struct _VMTEARDOWN_GPADL {
+
+    VMPACKET_DESCRIPTOR d;
+
+#endif
+
+    u32  Gpadl;
+    u32  Reserved; /* for alignment to a 8-byte boundary */
+} VMTEARDOWN_GPADL, *PVMTEARDOWN_GPADL;
+
+
+
+/* This is the format for a GPA-Direct packet, which contains a set of GPA */
+/* ranges, in addition to commands and/or data. */
+
+
+#ifdef __cplusplus
+
+typedef struct _VMDATA_GPA_DIRECT : VMPACKET_DESCRIPTOR {
+
+#else
+
+typedef struct _VMDATA_GPA_DIRECT {
+
+    VMPACKET_DESCRIPTOR d;
+
+#endif
+
+    u32      Reserved;
+    u32      RangeCount;
+    GPA_RANGE   Range[1];
+
+} VMDATA_GPA_DIRECT, *PVMDATA_GPA_DIRECT;
+
+
+
+
+/* This is the format for a Additional Data Packet. */
+
+
+#ifdef __cplusplus
+
+typedef struct _VMADDITIONAL_DATA : VMPACKET_DESCRIPTOR {
+
+#else
+
+typedef struct _VMADDITIONAL_DATA {
+
+    VMPACKET_DESCRIPTOR d;
+
+#endif
+
+    u64  TotalBytes;
+    u32  ByteOffset;
+    u32  ByteCount;
+    unsigned char   Data[1];
+
+} VMADDITIONAL_DATA, *PVMADDITIONAL_DATA;
+
+
+#pragma pack(pop)
+
+typedef union {
+    VMPACKET_DESCRIPTOR             SimpleHeader;
+    VMTRANSFER_PAGE_PACKET_HEADER   TransferPageHeader;
+    VMGPADL_PACKET_HEADER           GpadlHeader;
+    VMADD_REMOVE_TRANSFER_PAGE_SET  AddRemoveTransferPageHeader;
+    VMESTABLISH_GPADL               EstablishGpadlHeader;
+    VMTEARDOWN_GPADL                TeardownGpadlHeader;
+    VMDATA_GPA_DIRECT               DataGpaDirectHeader;
+} VMPACKET_LARGEST_POSSIBLE_HEADER, *PVMPACKET_LARGEST_POSSIBLE_HEADER;
+
+#define VMPACKET_DATA_START_ADDRESS(__packet)                           \
+    (void *)(((unsigned char *)__packet) + ((PVMPACKET_DESCRIPTOR)__packet)->DataOffset8 * 8)
+
+#define VMPACKET_DATA_LENGTH(__packet)                                  \
+    ((((PVMPACKET_DESCRIPTOR)__packet)->Length8 - ((PVMPACKET_DESCRIPTOR)__packet)->DataOffset8) * 8)
+
+#define VMPACKET_TRANSFER_MODE(__packet) ((PVMPACKET_DESCRIPTOR)__packet)->Type
+
+typedef enum {
+    VmbusServerEndpoint = 0,
+    VmbusClientEndpoint,
+    VmbusEndpointMaximum
+} ENDPOINT_TYPE, *PENDPOINT_TYPE;
+
+typedef enum {
+    VmbusPacketTypeInvalid                      = 0x0,
+    VmbusPacketTypeSynch                        = 0x1,
+    VmbusPacketTypeAddTransferPageSet           = 0x2,
+    VmbusPacketTypeRemoveTransferPageSet        = 0x3,
+    VmbusPacketTypeEstablishGpadl               = 0x4,
+    VmbusPacketTypeTearDownGpadl                = 0x5,
+    VmbusPacketTypeDataInBand                   = 0x6,
+    VmbusPacketTypeDataUsingTransferPages       = 0x7,
+    VmbusPacketTypeDataUsingGpadl               = 0x8,
+    VmbusPacketTypeDataUsingGpaDirect           = 0x9,
+    VmbusPacketTypeCancelRequest                = 0xa,
+    VmbusPacketTypeCompletion                   = 0xb,
+    VmbusPacketTypeDataUsingAdditionalPackets   = 0xc,
+    VmbusPacketTypeAdditionalData               = 0xd
+} VMBUS_PACKET_TYPE, *PVMBUS_PACKET_TYPE;
+
+#define VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED    1