3 * Copyright (c) 2009, Microsoft Corporation.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
16 * Place - Suite 330, Boston, MA 02111-1307 USA.
19 * Haiyang Zhang <haiyangz@microsoft.com>
20 * Hank Janssen <hjanssen@microsoft.com>
28 #define MAX_PAGE_BUFFER_COUNT 16
29 #define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */
33 /* Single-page buffer */
34 struct hv_page_buffer {
40 /* Multiple-page buffer */
41 struct hv_multipage_buffer {
42 /* Length and Offset determines the # of pfns in the array */
45 u64 PfnArray[MAX_MULTIPAGE_BUFFER_COUNT];
48 /* 0x18 includes the proprietary packet header */
49 #define MAX_PAGE_BUFFER_PACKET (0x18 + \
50 (sizeof(struct hv_page_buffer) * \
51 MAX_PAGE_BUFFER_COUNT))
52 #define MAX_MULTIPAGE_BUFFER_PACKET (0x18 + \
53 sizeof(struct hv_multipage_buffer))
61 struct hv_dev_port_info {
66 u32 BytesAvailToWrite;
69 struct hv_device_info {
72 struct hv_guid ChannelType;
73 struct hv_guid ChannelInstance;
76 u32 ServerMonitorPending;
77 u32 ServerMonitorLatency;
78 u32 ServerMonitorConnectionId;
79 u32 ClientMonitorPending;
80 u32 ClientMonitorLatency;
81 u32 ClientMonitorConnectionId;
83 struct hv_dev_port_info Inbound;
84 struct hv_dev_port_info Outbound;
87 /* Base driver object */
91 /* the device type supported by this driver */
92 struct hv_guid deviceType;
94 int (*OnDeviceAdd)(struct hv_device *device, void *data);
95 int (*OnDeviceRemove)(struct hv_device *device);
96 void (*OnCleanup)(struct hv_driver *driver);
99 /* Base device object */
101 /* the driver for this device */
102 struct hv_driver *Driver;
106 /* the device type id of this device */
107 struct hv_guid deviceType;
109 /* the device instance id of this device */
110 struct hv_guid deviceInstance;
112 struct vmbus_channel *channel;
114 /* Device extension; */
118 /* Vmbus driver object */
119 struct vmbus_driver {
120 /* !! Must be the 1st field !! */
121 /* FIXME if ^, then someone is doing somthing stupid */
122 struct hv_driver Base;
124 /* Set by the caller */
125 struct hv_device * (*OnChildDeviceCreate)(struct hv_guid *DeviceType,
126 struct hv_guid *DeviceInstance,
127 struct vmbus_channel *channel);
128 void (*OnChildDeviceDestroy)(struct hv_device *device);
129 int (*OnChildDeviceAdd)(struct hv_device *RootDevice,
130 struct hv_device *ChildDevice);
131 void (*OnChildDeviceRemove)(struct hv_device *device);
133 /* Set by the callee */
134 int (*OnIsr)(struct hv_driver *driver);
135 void (*OnMsgDpc)(struct hv_driver *driver);
136 void (*OnEventDpc)(struct hv_driver *driver);
137 void (*GetChannelOffers)(void);
140 int VmbusInitialize(struct hv_driver *drv);
142 #endif /* _VMBUS_API_H_ */