1 files changed, 112 insertions, 0 deletions
diff --git a/drivers/staging/hv/Channel.h b/drivers/staging/hv/Channel.h
new file mode 100644
index 000000000000..6b283edcae68
--- /dev/null
+++ b/drivers/staging/hv/Channel.h
@@ -0,0 +1,112 @@
+/*
+ *
+ * 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 _CHANNEL_H_
+#define _CHANNEL_H_
+
+#include "ChannelMgmt.h"
+
+/* The format must be the same as struct vmdata_gpa_direct */
+struct VMBUS_CHANNEL_PACKET_PAGE_BUFFER {
+	u16 Type;
+	u16 DataOffset8;
+	u16 Length8;
+	u16 Flags;
+	u64 TransactionId;
+	u32 Reserved;
+	u32 RangeCount;
+	struct hv_page_buffer Range[MAX_PAGE_BUFFER_COUNT];
+} __attribute__((packed));
+
+/* The format must be the same as struct vmdata_gpa_direct */
+struct VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER {
+	u16 Type;
+	u16 DataOffset8;
+	u16 Length8;
+	u16 Flags;
+	u64 TransactionId;
+	u32 Reserved;
+	u32 RangeCount;		/* Always 1 in this case */
+	struct hv_multipage_buffer Range;
+} __attribute__((packed));
+
+
+extern int VmbusChannelOpen(struct vmbus_channel *channel,
+			    u32 SendRingBufferSize,
+			    u32 RecvRingBufferSize,
+			    void *UserData,
+			    u32 UserDataLen,
+			    void(*OnChannelCallback)(void *context),
+			    void *Context);
+
+extern void VmbusChannelClose(struct vmbus_channel *channel);
+
+extern int VmbusChannelSendPacket(struct vmbus_channel *channel,
+				  const void *Buffer,
+				  u32 BufferLen,
+				  u64 RequestId,
+				  enum vmbus_packet_type Type,
+				  u32 Flags);
+
+extern int VmbusChannelSendPacketPageBuffer(struct vmbus_channel *channel,
+					    struct hv_page_buffer PageBuffers[],
+					    u32 PageCount,
+					    void *Buffer,
+					    u32 BufferLen,
+					    u64 RequestId);
+
+extern int VmbusChannelSendPacketMultiPageBuffer(struct vmbus_channel *channel,
+					struct hv_multipage_buffer *mpb,
+					void *Buffer,
+					u32 BufferLen,
+					u64 RequestId);
+
+extern int VmbusChannelEstablishGpadl(struct vmbus_channel *channel,
+				      void *Kbuffer,
+				      u32 Size,
+				      u32 *GpadlHandle);
+
+extern int VmbusChannelTeardownGpadl(struct vmbus_channel *channel,
+				     u32 GpadlHandle);
+
+extern int VmbusChannelRecvPacket(struct vmbus_channel *channel,
+				  void *Buffer,
+				  u32 BufferLen,
+				  u32 *BufferActualLen,
+				  u64 *RequestId);
+
+extern int VmbusChannelRecvPacketRaw(struct vmbus_channel *channel,
+				     void *Buffer,
+				     u32 BufferLen,
+				     u32 *BufferActualLen,
+				     u64 *RequestId);
+
+extern void VmbusChannelOnChannelEvent(struct vmbus_channel *channel);
+
+extern void VmbusChannelGetDebugInfo(struct vmbus_channel *channel,
+				     struct vmbus_channel_debug_info *debug);
+
+extern void VmbusChannelOnTimer(unsigned long data);
+
+#endif /* _CHANNEL_H_ */