drivers/staging/hv/include/vmbus.h

   1 /*
   2  *
   3  * Copyright (c) 2009, Microsoft Corporation.
   4  *
   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.
   8  *
   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
  12  * more details.
  13  *
  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.
  17  *
  18  * Authors:
  19  *   Haiyang Zhang <haiyangz@microsoft.com>
  20  *   Hank Janssen  <hjanssen@microsoft.com>
  21  *
  22  */
  23
  24
  25 #ifndef _VMBUS_H_
  26 #define _VMBUS_H_
  27
  28 #include <linux/device.h>
  29
  30 #include "VmbusApi.h"
  31
  32
  33 /* Data types */
  34
  35
  36 typedef int (*PFN_DRIVERINITIALIZE)(struct hv_driver *drv);
  37 typedef int (*PFN_DRIVEREXIT)(struct hv_driver *drv);
  38
  39 struct driver_context {
  40         struct hv_guid class_id;
  41
  42         struct device_driver    driver;
  43
  44         /* Use these methods instead of the struct device_driver so 2.6 kernel stops complaining */
  45         int (*probe)(struct device *);
  46         int (*remove)(struct device *);
  47         void (*shutdown)(struct device *);
  48 };
  49
  50 struct device_context {
  51         struct work_struct              probe_failed_work_item;
  52         struct hv_guid class_id;
  53         struct hv_guid device_id;
  54         int                                             probe_error;
  55         struct device                   device;
  56         struct hv_device device_obj;
  57 };
  58
  59
  60
  61 /* Global */
  62
  63
  64
  65 /* Inlines */
  66
  67 static inline struct device_context *to_device_context(struct hv_device *device_obj)
  68 {
  69         return container_of(device_obj, struct device_context, device_obj);
  70 }
  71
  72 static inline struct device_context *device_to_device_context(struct device *device)
  73 {
  74         return container_of(device, struct device_context, device);
  75 }
  76
  77 static inline struct driver_context *driver_to_driver_context(struct device_driver *driver)
  78 {
  79         return container_of(driver, struct driver_context, driver);
  80 }
  81
  82
  83 /* Vmbus interface */
  84
  85 int vmbus_child_driver_register(
  86         struct driver_context* driver_ctx
  87         );
  88
  89 void
  90 vmbus_child_driver_unregister(
  91         struct driver_context *driver_ctx
  92         );
  93
  94 void
  95 vmbus_get_interface(
  96         VMBUS_CHANNEL_INTERFACE *interface
  97         );
  98
  99 #endif /* _VMBUS_H_ */