drivers/staging/hv/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 #include "vmbus_api.h"
  30
  31 struct driver_context {
  32         struct hv_guid class_id;
  33
  34         struct device_driver driver;
  35
  36         /*
  37          * Use these methods instead of the struct device_driver so 2.6 kernel
  38          * stops complaining
  39          * TODO - fix this!
  40          */
  41         int (*probe)(struct device *);
  42         int (*remove)(struct device *);
  43         void (*shutdown)(struct device *);
  44 };
  45
  46 struct vm_device {
  47         struct work_struct probe_failed_work_item;
  48         struct hv_guid class_id;
  49         struct hv_guid device_id;
  50         int probe_error;
  51         struct hv_device device_obj;
  52         struct device device;
  53 };
  54
  55 static inline struct vm_device *to_vm_device(struct hv_device *d)
  56 {
  57         return container_of(d, struct vm_device, device_obj);
  58 }
  59
  60 static inline struct vm_device *device_to_vm_device(struct device *d)
  61 {
  62         return container_of(d, struct vm_device, device);
  63 }
  64
  65 static inline struct driver_context *driver_to_driver_context(struct device_driver *d)
  66 {
  67         return container_of(d, struct driver_context, driver);
  68 }
  69
  70
  71 /* Vmbus interface */
  72 int vmbus_child_driver_register(struct driver_context *driver_ctx);
  73 void vmbus_child_driver_unregister(struct driver_context *driver_ctx);
  74
  75 extern struct completion hv_channel_ready;
  76
  77 #endif /* _VMBUS_H_ */