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 #include <linux/device.h>
29 #include <linux/workqueue.h>
31 #define MAX_PAGE_BUFFER_COUNT 16
32 #define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */
36 /* Single-page buffer */
37 struct hv_page_buffer {
43 /* Multiple-page buffer */
44 struct hv_multipage_buffer {
45 /* Length and Offset determines the # of pfns in the array */
48 u64 pfn_array[MAX_MULTIPAGE_BUFFER_COUNT];
51 /* 0x18 includes the proprietary packet header */
52 #define MAX_PAGE_BUFFER_PACKET (0x18 + \
53 (sizeof(struct hv_page_buffer) * \
54 MAX_PAGE_BUFFER_COUNT))
55 #define MAX_MULTIPAGE_BUFFER_PACKET (0x18 + \
56 sizeof(struct hv_multipage_buffer))
64 struct hv_dev_port_info {
68 u32 bytes_avail_toread;
69 u32 bytes_avail_towrite;
72 struct hv_device_info {
75 struct hv_guid chn_type;
76 struct hv_guid chn_instance;
79 u32 server_monitor_pending;
80 u32 server_monitor_latency;
81 u32 server_monitor_conn_id;
82 u32 client_monitor_pending;
83 u32 client_monitor_latency;
84 u32 client_monitor_conn_id;
86 struct hv_dev_port_info inbound;
87 struct hv_dev_port_info outbound;
90 /* Base driver object */
94 /* the device type supported by this driver */
95 struct hv_guid dev_type;
98 * Device type specific drivers (net, blk etc.)
99 * need a mechanism to get a pointer to
100 * device type specific driver structure given
101 * a pointer to the base hyperv driver structure.
102 * The current code solves this problem using
103 * a hack. Support this need explicitly
107 struct device_driver driver;
109 int (*dev_add)(struct hv_device *device, void *data);
110 int (*dev_rm)(struct hv_device *device);
111 void (*cleanup)(struct hv_driver *driver);
114 /* Base device object */
116 /* the driver for this device */
117 struct hv_driver *drv;
121 struct work_struct probe_failed_work_item;
125 /* the device type id of this device */
126 struct hv_guid dev_type;
128 /* the device instance id of this device */
129 struct hv_guid dev_instance;
131 struct device device;
133 struct vmbus_channel *channel;
135 /* Device extension; */
139 #endif /* _VMBUS_API_H_ */