Staging: hv: add the Hyper-V virtual bus

This is the virtual bus that all of the Linux Hyper-V drivers use.

Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 222 insertions, 0 deletions

diff --git a/drivers/staging/hv/ChannelInterface.c b/drivers/staging/hv/ChannelInterface.c
new file mode 100644
index 0000000..1a7663e
--- /dev/null
+++ b/drivers/staging/hv/ChannelInterface.c
@@ -0,0 +1,222 @@
+/*
+ *
+ * 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>
+ *
+ */
+
+#include "VmbusPrivate.h"
+
+INTERNAL int
+IVmbusChannelOpen(
+	PDEVICE_OBJECT		Device,
+	UINT32				SendBufferSize,
+	UINT32				RecvRingBufferSize,
+	PVOID				UserData,
+	UINT32				UserDataLen,
+	VMBUS_CHANNEL_CALLBACK ChannelCallback,
+	PVOID				Context
+	)
+{
+	return VmbusChannelOpen( (VMBUS_CHANNEL*)Device->context,
+								SendBufferSize,
+								RecvRingBufferSize,
+								UserData,
+								UserDataLen,
+								ChannelCallback,
+								Context);
+}
+
+
+INTERNAL void
+IVmbusChannelClose(
+	PDEVICE_OBJECT		Device
+	)
+{
+	VmbusChannelClose((VMBUS_CHANNEL*)Device->context);
+}
+
+
+INTERNAL int
+IVmbusChannelSendPacket(
+	PDEVICE_OBJECT		Device,
+	const PVOID			Buffer,
+	UINT32				BufferLen,
+	UINT64				RequestId,
+	UINT32				Type,
+	UINT32				Flags
+	)
+{
+	return VmbusChannelSendPacket((VMBUS_CHANNEL*)Device->context,
+									Buffer,
+									BufferLen,
+									RequestId,
+									Type,
+									Flags);
+}
+
+INTERNAL int
+IVmbusChannelSendPacketPageBuffer(
+	PDEVICE_OBJECT		Device,
+	PAGE_BUFFER			PageBuffers[],
+	UINT32				PageCount,
+	PVOID				Buffer,
+	UINT32				BufferLen,
+	UINT64				RequestId
+	)
+{
+	return VmbusChannelSendPacketPageBuffer((VMBUS_CHANNEL*)Device->context,
+												PageBuffers,
+												PageCount,
+												Buffer,
+												BufferLen,
+												RequestId);
+}
+
+INTERNAL int
+IVmbusChannelSendPacketMultiPageBuffer(
+	PDEVICE_OBJECT		Device,
+	MULTIPAGE_BUFFER	*MultiPageBuffer,
+	PVOID				Buffer,
+	UINT32				BufferLen,
+	UINT64				RequestId
+	)
+{
+	return VmbusChannelSendPacketMultiPageBuffer((VMBUS_CHANNEL*)Device->context,
+													MultiPageBuffer,
+													Buffer,
+													BufferLen,
+													RequestId);
+}
+
+INTERNAL int
+IVmbusChannelRecvPacket (
+	PDEVICE_OBJECT		Device,
+	PVOID				Buffer,
+	UINT32				BufferLen,
+	UINT32*				BufferActualLen,
+	UINT64*				RequestId
+	)
+{
+	return VmbusChannelRecvPacket((VMBUS_CHANNEL*)Device->context,
+									Buffer,
+									BufferLen,
+									BufferActualLen,
+									RequestId);
+}
+
+INTERNAL int
+IVmbusChannelRecvPacketRaw(
+	PDEVICE_OBJECT		Device,
+	PVOID				Buffer,
+	UINT32				BufferLen,
+	UINT32*				BufferActualLen,
+	UINT64*				RequestId
+	)
+{
+	return VmbusChannelRecvPacketRaw((VMBUS_CHANNEL*)Device->context,
+										Buffer,
+										BufferLen,
+										BufferActualLen,
+										RequestId);
+}
+
+INTERNAL int
+IVmbusChannelEstablishGpadl(
+	PDEVICE_OBJECT		Device,
+	PVOID				Buffer,
+	UINT32				BufferLen,
+	UINT32*				GpadlHandle
+	)
+{
+	return VmbusChannelEstablishGpadl((VMBUS_CHANNEL*)Device->context,
+										Buffer,
+										BufferLen,
+										GpadlHandle);
+}
+
+INTERNAL int
+IVmbusChannelTeardownGpadl(
+   PDEVICE_OBJECT		Device,
+   UINT32				GpadlHandle
+	)
+{
+	return VmbusChannelTeardownGpadl((VMBUS_CHANNEL*)Device->context,
+										GpadlHandle);
+
+}
+
+INTERNAL void
+GetChannelInterface(
+	VMBUS_CHANNEL_INTERFACE *ChannelInterface
+	)
+{
+	ChannelInterface->Open						= IVmbusChannelOpen;
+	ChannelInterface->Close						= IVmbusChannelClose;
+	ChannelInterface->SendPacket				= IVmbusChannelSendPacket;
+	ChannelInterface->SendPacketPageBuffer		= IVmbusChannelSendPacketPageBuffer;
+	ChannelInterface->SendPacketMultiPageBuffer = IVmbusChannelSendPacketMultiPageBuffer;
+	ChannelInterface->RecvPacket				= IVmbusChannelRecvPacket;
+	ChannelInterface->RecvPacketRaw				= IVmbusChannelRecvPacketRaw;
+	ChannelInterface->EstablishGpadl			= IVmbusChannelEstablishGpadl;
+	ChannelInterface->TeardownGpadl				= IVmbusChannelTeardownGpadl;
+	ChannelInterface->GetInfo					= GetChannelInfo;
+}
+
+
+INTERNAL void
+GetChannelInfo(
+	PDEVICE_OBJECT		Device,
+	DEVICE_INFO			*DeviceInfo
+			   )
+{
+	VMBUS_CHANNEL_DEBUG_INFO debugInfo;
+
+	if (Device->context)
+	{
+		VmbusChannelGetDebugInfo((VMBUS_CHANNEL*)Device->context, &debugInfo);
+
+		DeviceInfo->ChannelId = debugInfo.RelId;
+		DeviceInfo->ChannelState = debugInfo.State;
+		memcpy(&DeviceInfo->ChannelType, &debugInfo.InterfaceType, sizeof(GUID));
+		memcpy(&DeviceInfo->ChannelInstance, &debugInfo.InterfaceInstance, sizeof(GUID));
+
+		DeviceInfo->MonitorId = debugInfo.MonitorId;
+
+		DeviceInfo->ServerMonitorPending = debugInfo.ServerMonitorPending;
+		DeviceInfo->ServerMonitorLatency = debugInfo.ServerMonitorLatency;
+		DeviceInfo->ServerMonitorConnectionId = debugInfo.ServerMonitorConnectionId;
+
+		DeviceInfo->ClientMonitorPending = debugInfo.ClientMonitorPending;
+		DeviceInfo->ClientMonitorLatency = debugInfo.ClientMonitorLatency;
+		DeviceInfo->ClientMonitorConnectionId = debugInfo.ClientMonitorConnectionId;
+
+		DeviceInfo->Inbound.InterruptMask = debugInfo.Inbound.CurrentInterruptMask;
+		DeviceInfo->Inbound.ReadIndex = debugInfo.Inbound.CurrentReadIndex;
+		DeviceInfo->Inbound.WriteIndex = debugInfo.Inbound.CurrentWriteIndex;
+		DeviceInfo->Inbound.BytesAvailToRead = debugInfo.Inbound.BytesAvailToRead;
+		DeviceInfo->Inbound.BytesAvailToWrite = debugInfo.Inbound.BytesAvailToWrite;
+
+		DeviceInfo->Outbound.InterruptMask = debugInfo.Outbound.CurrentInterruptMask;
+		DeviceInfo->Outbound.ReadIndex = debugInfo.Outbound.CurrentReadIndex;
+		DeviceInfo->Outbound.WriteIndex = debugInfo.Outbound.CurrentWriteIndex;
+		DeviceInfo->Outbound.BytesAvailToRead = debugInfo.Outbound.BytesAvailToRead;
+		DeviceInfo->Outbound.BytesAvailToWrite = debugInfo.Outbound.BytesAvailToWrite;
+	}
+}