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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;
/* All drivers */
typedef int (*PFN_ON_DEVICEADD)(struct hv_device *Device,
void *AdditionalInfo);
typedef int (*PFN_ON_DEVICEREMOVE)(struct hv_device *Device);
typedef char** (*PFN_ON_GETDEVICEIDS)(void);
typedef void (*PFN_ON_CLEANUP)(struct hv_driver *Driver);
/* Vmbus extensions */
typedef int (*PFN_ON_ISR)(struct hv_driver *drv);
typedef void (*PFN_ON_DPC)(struct hv_driver *drv);
typedef void (*PFN_GET_CHANNEL_OFFERS)(void);
typedef struct hv_device * (*PFN_ON_CHILDDEVICE_CREATE)
(struct hv_guid *DeviceType,
struct hv_guid *DeviceInstance,
void *Context);
typedef void (*PFN_ON_CHILDDEVICE_DESTROY)(struct hv_device *Device);
typedef int (*PFN_ON_CHILDDEVICE_ADD)(struct hv_device *RootDevice,
struct hv_device *ChildDevice);
typedef void (*PFN_ON_CHILDDEVICE_REMOVE)(struct hv_device *Device);
/* Vmbus channel interface */
typedef void (*VMBUS_CHANNEL_CALLBACK)(void *context);
typedef int (*VMBUS_CHANNEL_OPEN)(struct hv_device *Device, u32 SendBufferSize,
u32 RecvRingBufferSize,
void *UserData,
u32 UserDataLen,
VMBUS_CHANNEL_CALLBACK ChannelCallback,
void *Context);
typedef void (*VMBUS_CHANNEL_CLOSE)(struct hv_device *Device);
typedef int (*VMBUS_CHANNEL_SEND_PACKET)(struct hv_device *Device,
const void *Buffer,
u32 BufferLen,
u64 RequestId,
u32 Type,
u32 Flags);
typedef int (*VMBUS_CHANNEL_SEND_PACKET_PAGEBUFFER)(struct hv_device *Device,
struct hv_page_buffer PageBuffers[],
u32 PageCount,
void *Buffer,
u32 BufferLen,
u64 RequestId);
typedef int (*VMBUS_CHANNEL_SEND_PACKET_MULTIPAGEBUFFER)
(struct hv_device *Device,
struct hv_multipage_buffer *mpb,
void *Buffer,
u32 BufferLen,
u64 RequestId);
typedef int (*VMBUS_CHANNEL_RECV_PACKET)(struct hv_device *Device,
void *Buffer,
u32 BufferLen,
u32 *BufferActualLen,
u64 *RequestId);
typedef int(*VMBUS_CHANNEL_RECV_PACKET_PAW)(struct hv_device *Device,
void *Buffer,
u32 BufferLen,
u32 *BufferActualLen,
u64 *RequestId);
typedef int (*VMBUS_CHANNEL_ESTABLISH_GPADL)(struct hv_device *Device,
void *Buffer,
u32 BufferLen,
u32 *GpadlHandle);
typedef int (*VMBUS_CHANNEL_TEARDOWN_GPADL)(struct hv_device *Device,
u32 GpadlHandle);
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;
};
typedef void (*VMBUS_GET_CHANNEL_INFO)(struct hv_device *Device,
struct hv_device_info *DeviceInfo);
struct vmbus_channel_interface {
VMBUS_CHANNEL_OPEN Open;
VMBUS_CHANNEL_CLOSE Close;
VMBUS_CHANNEL_SEND_PACKET SendPacket;
VMBUS_CHANNEL_SEND_PACKET_PAGEBUFFER SendPacketPageBuffer;
VMBUS_CHANNEL_SEND_PACKET_MULTIPAGEBUFFER SendPacketMultiPageBuffer;
VMBUS_CHANNEL_RECV_PACKET RecvPacket;
VMBUS_CHANNEL_RECV_PACKET_PAW RecvPacketRaw;
VMBUS_CHANNEL_ESTABLISH_GPADL EstablishGpadl;
VMBUS_CHANNEL_TEARDOWN_GPADL TeardownGpadl;
VMBUS_GET_CHANNEL_INFO GetInfo;
};
typedef void (*VMBUS_GET_CHANNEL_INTERFACE)(struct vmbus_channel_interface *i);
/* Base driver object */
struct hv_driver {
const char *name;
/* the device type supported by this driver */
struct hv_guid deviceType;
PFN_ON_DEVICEADD OnDeviceAdd;
PFN_ON_DEVICEREMOVE OnDeviceRemove;
/* device ids supported by this driver */
PFN_ON_GETDEVICEIDS OnGetDeviceIds;
PFN_ON_CLEANUP OnCleanup;
struct vmbus_channel_interface VmbusChannelInterface;
};
/* 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;
void *context;
/* Device extension; */
void *Extension;
};
/* Vmbus driver object */
struct vmbus_driver {
/* !! Must be the 1st field !! */
/* FIXME if ^, then someone is doing somthing stupid */
struct hv_driver Base;
/* Set by the caller */
PFN_ON_CHILDDEVICE_CREATE OnChildDeviceCreate;
PFN_ON_CHILDDEVICE_DESTROY OnChildDeviceDestroy;
PFN_ON_CHILDDEVICE_ADD OnChildDeviceAdd;
PFN_ON_CHILDDEVICE_REMOVE OnChildDeviceRemove;
/* Set by the callee */
PFN_ON_ISR OnIsr;
PFN_ON_DPC OnMsgDpc;
PFN_ON_DPC OnEventDpc;
PFN_GET_CHANNEL_OFFERS GetChannelOffers;
VMBUS_GET_CHANNEL_INTERFACE GetChannelInterface;
VMBUS_GET_CHANNEL_INFO GetChannelInfo;
};
int VmbusInitialize(struct hv_driver *drv);
#endif /* _VMBUS_API_H_ */
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