1 files changed, 170 insertions, 0 deletions

diff --git a/drivers/staging/hv/VmbusPrivate.h b/drivers/staging/hv/VmbusPrivate.h
new file mode 100644
index 00000000000..5e86165dea2
--- /dev/null
+++ b/drivers/staging/hv/VmbusPrivate.h
@@ -0,0 +1,170 @@
+/*
+ *
+ * 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>
+ *
+ */
+
+
+#ifndef _VMBUS_PRIVATE_H_
+#define _VMBUS_PRIVATE_H_
+
+#ifndef INTERNAL
+#define INTERNAL static
+#endif
+
+#include "Hv.h"
+#include "VmbusApi.h"
+#include "Channel.h"
+#include "ChannelMgmt.h"
+#include "ChannelInterface.h"
+//#include "ChannelMessages.h"
+#include "RingBuffer.h"
+//#include "Packet.h"
+#include "List.h"
+
+//
+// Defines
+//
+
+// Maximum channels is determined by the size of the interrupt page which is PAGE_SIZE. 1/2 of PAGE_SIZE is for
+// send endpoint interrupt and the other is receive endpoint interrupt
+#define MAX_NUM_CHANNELS                                (PAGE_SIZE >> 1) << 3  // 16348 channels
+
+// The value here must be in multiple of 32
+// TODO: Need to make this configurable
+#define MAX_NUM_CHANNELS_SUPPORTED              256
+
+//
+// Data types
+//
+
+typedef enum {
+        Disconnected,
+        Connecting,
+        Connected,
+        Disconnecting
+} VMBUS_CONNECT_STATE;
+
+#define MAX_SIZE_CHANNEL_MESSAGE                        HV_MESSAGE_PAYLOAD_BYTE_COUNT
+
+typedef struct _VMBUS_CONNECTION {
+
+        VMBUS_CONNECT_STATE                                     ConnectState;
+
+        UINT32                                                          NextGpadlHandle;
+
+        // Represents channel interrupts. Each bit position
+        // represents a channel.
+        // When a channel sends an interrupt via VMBUS, it
+        // finds its bit in the sendInterruptPage, set it and
+        // calls Hv to generate a port event. The other end
+        // receives the port event and parse the recvInterruptPage
+        // to see which bit is set
+        VOID*                                                           InterruptPage;
+        VOID*                                                           SendInterruptPage;
+        VOID*                                                           RecvInterruptPage;
+
+        // 2 pages - 1st page for parent->child notification and 2nd is child->parent notification
+        VOID*                                                           MonitorPages;
+        LIST_ENTRY                                                      ChannelMsgList;
+        HANDLE                                                          ChannelMsgLock;
+
+        // List of channels
+        LIST_ENTRY                                                      ChannelList;
+        HANDLE                                                          ChannelLock;
+
+        HANDLE                                                          WorkQueue;
+} VMBUS_CONNECTION;
+
+
+typedef struct _VMBUS_MSGINFO {
+        // Bookkeeping stuff
+        LIST_ENTRY                      MsgListEntry;
+
+        // Synchronize the request/response if needed
+        HANDLE                          WaitEvent;
+
+        // The message itself
+        unsigned char           Msg[0];
+} VMBUS_MSGINFO;
+
+
+//
+// Externs
+//
+extern VMBUS_CONNECTION gVmbusConnection;
+
+//
+// General vmbus interface
+//
+INTERNAL DEVICE_OBJECT*
+VmbusChildDeviceCreate(
+        GUID deviceType,
+        GUID deviceInstance,
+        void *context);
+
+INTERNAL int
+VmbusChildDeviceAdd(
+        DEVICE_OBJECT* Device);
+
+INTERNAL void
+VmbusChildDeviceRemove(
+   DEVICE_OBJECT* Device);
+
+//INTERNAL void
+//VmbusChildDeviceDestroy(
+//      DEVICE_OBJECT*);
+
+INTERNAL VMBUS_CHANNEL*
+GetChannelFromRelId(
+        UINT32 relId
+        );
+
+//
+// Connection interface
+//
+INTERNAL int
+VmbusConnect(
+        VOID
+        );
+
+INTERNAL int
+VmbusDisconnect(
+        VOID
+        );
+
+INTERNAL int
+VmbusPostMessage(
+        PVOID                   buffer,
+        SIZE_T                  bufSize
+        );
+
+INTERNAL int
+VmbusSetEvent(
+        UINT32 childRelId
+        );
+
+INTERNAL VOID
+VmbusOnEvents(
+  VOID
+        );
+
+
+#endif // _VMBUS_PRIVATE_H_