1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/staging/hv/vmbus_private.h b/drivers/staging/hv/vmbus_private.h
new file mode 100644
index 000000000000..588c667a7f6b
--- /dev/null
+++ b/drivers/staging/hv/vmbus_private.h
@@ -0,0 +1,134 @@
+/*
+ *
+ * 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 "vmbus_api.h"
+#include "channel.h"
+#include "channel_mgmt.h"
+#include "channel_interface.h"
+#include "ring_buffer.h"
+#include <linux/list.h>
+
+
+/*
+ * 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
+
+
+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;
+	struct list_head ChannelMsgList;
+	spinlock_t channelmsg_lock;
+
+	/* List of channels */
+	struct list_head ChannelList;
+	spinlock_t channel_lock;
+
+	struct workqueue_struct *WorkQueue;
+};
+
+
+struct VMBUS_MSGINFO {
+	/* Bookkeeping stuff */
+	struct list_head MsgListEntry;
+
+	/* Synchronize the request/response if needed */
+	struct osd_waitevent *WaitEvent;
+
+	/* The message itself */
+	unsigned char Msg[0];
+};
+
+
+extern struct VMBUS_CONNECTION gVmbusConnection;
+
+/* General vmbus interface */
+
+struct hv_device *VmbusChildDeviceCreate(struct hv_guid *deviceType,
+					 struct hv_guid *deviceInstance,
+					 void *context);
+
+int VmbusChildDeviceAdd(struct hv_device *Device);
+
+void VmbusChildDeviceRemove(struct hv_device *Device);
+
+/* static void */
+/* VmbusChildDeviceDestroy( */
+/* struct hv_device *); */
+
+struct vmbus_channel *GetChannelFromRelId(u32 relId);
+
+
+/* Connection interface */
+
+int VmbusConnect(void);
+
+int VmbusDisconnect(void);
+
+int VmbusPostMessage(void *buffer, size_t bufSize);
+
+int VmbusSetEvent(u32 childRelId);
+
+void VmbusOnEvents(void);
+
+
+#endif /* _VMBUS_PRIVATE_H_ */