1 files changed, 173 insertions, 0 deletions
diff --git a/drivers/staging/hv/VmbusPrivate.h b/drivers/staging/hv/VmbusPrivate.h
new file mode 100644
index 000000000000..906736bfd9eb
--- /dev/null
+++ b/drivers/staging/hv/VmbusPrivate.h
@@ -0,0 +1,173 @@
+/*
+ *
+ * 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_
+
+#include "Hv.h"
+#include "include/VmbusApi.h"
+#include "Channel.h"
+#include "ChannelMgmt.h"
+#include "ChannelInterface.h"
+/* #include "ChannelMessages.h" */
+#include "RingBuffer.h"
+/* #include "Packet.h" */
+#include "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 */
+
+
+enum VMBUS_CONNECT_STATE {
+	Disconnected,
+	Connecting,
+	Connected,
+	Disconnecting
+};
+
+#define MAX_SIZE_CHANNEL_MESSAGE			HV_MESSAGE_PAYLOAD_BYTE_COUNT
+
+struct VMBUS_CONNECTION {
+
+	enum VMBUS_CONNECT_STATE					ConnectState;
+
+	atomic_t 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;
+	spinlock_t channelmsg_lock;
+
+	/* List of channels */
+	LIST_ENTRY							ChannelList;
+	spinlock_t channel_lock;
+
+	struct workqueue_struct *WorkQueue;
+};
+
+
+struct VMBUS_MSGINFO {
+	/* Bookkeeping stuff */
+	LIST_ENTRY			MsgListEntry;
+
+	/* Synchronize the request/response if needed */
+	struct osd_waitevent *WaitEvent;
+
+	/* The message itself */
+	unsigned char		Msg[0];
+};
+
+
+
+/* Externs */
+
+extern struct VMBUS_CONNECTION gVmbusConnection;
+
+
+/* General vmbus interface */
+
+static struct hv_device*
+VmbusChildDeviceCreate(
+	GUID deviceType,
+	GUID deviceInstance,
+	void *context);
+
+static int
+VmbusChildDeviceAdd(
+	struct hv_device *Device);
+
+static void
+VmbusChildDeviceRemove(
+   struct hv_device *Device);
+
+/* static void */
+/* VmbusChildDeviceDestroy( */
+/* struct hv_device *); */
+
+static VMBUS_CHANNEL*
+GetChannelFromRelId(
+	u32 relId
+	);
+
+
+/* Connection interface */
+
+static int
+VmbusConnect(
+	void
+	);
+
+static int
+VmbusDisconnect(
+	void
+	);
+
+static int
+VmbusPostMessage(
+	void *			buffer,
+	size_t			bufSize
+	);
+
+static int
+VmbusSetEvent(
+	u32 childRelId
+	);
+
+static void
+VmbusOnEvents(
+  void
+	);
+
+
+#endif /* _VMBUS_PRIVATE_H_ */