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/*
*
* 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_API_H_
#define _VMBUS_API_H_
#define MAX_PAGE_BUFFER_COUNT 16
#define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */
#pragma pack(push, 1)
/* Single-page buffer */
struct hv_page_buffer {
u32 Length;
u32 Offset;
u64 Pfn;
};
/* Multiple-page buffer */
struct hv_multipage_buffer {
/* Length and Offset determines the # of pfns in the array */
u32 Length;
u32 Offset;
u64 PfnArray[MAX_MULTIPAGE_BUFFER_COUNT];
};
/* 0x18 includes the proprietary packet header */
#define MAX_PAGE_BUFFER_PACKET (0x18 + \
(sizeof(struct hv_page_buffer) * \
MAX_PAGE_BUFFER_COUNT))
#define MAX_MULTIPAGE_BUFFER_PACKET (0x18 + \
sizeof(struct hv_multipage_buffer))
#pragma pack(pop)
struct hv_driver;
struct hv_device;
struct hv_dev_port_info {
u32 InterruptMask;
u32 ReadIndex;
u32 WriteIndex;
u32 BytesAvailToRead;
u32 BytesAvailToWrite;
};
struct hv_device_info {
u32 ChannelId;
u32 ChannelState;
struct hv_guid ChannelType;
struct hv_guid ChannelInstance;
u32 MonitorId;
u32 ServerMonitorPending;
u32 ServerMonitorLatency;
u32 ServerMonitorConnectionId;
u32 ClientMonitorPending;
u32 ClientMonitorLatency;
u32 ClientMonitorConnectionId;
struct hv_dev_port_info Inbound;
struct hv_dev_port_info Outbound;
};
/* Base driver object */
struct hv_driver {
const char *name;
/* the device type supported by this driver */
struct hv_guid deviceType;
int (*OnDeviceAdd)(struct hv_device *device, void *data);
int (*OnDeviceRemove)(struct hv_device *device);
void (*OnCleanup)(struct hv_driver *driver);
};
/* Base device object */
struct hv_device {
/* the driver for this device */
struct hv_driver *Driver;
char name[64];
/* the device type id of this device */
struct hv_guid deviceType;
/* the device instance id of this device */
struct hv_guid deviceInstance;
struct vmbus_channel *channel;
/* Device extension; */
void *Extension;
};
#endif /* _VMBUS_API_H_ */
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