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
  30 #include "include/VmbusApi.h"
  31
  32 typedef int (*PFN_DRIVERINITIALIZE)(struct hv_driver *drv);
  33 typedef int (*PFN_DRIVEREXIT)(struct hv_driver *drv);
  34
  35 struct driver_context {
  36         struct hv_guid class_id;
  37
  38         struct device_driver driver;
  39
  40         /*
  41          * Use these methods instead of the struct device_driver so 2.6 kernel
  42          * stops complaining
  43          * TODO - fix this!
  44          */
  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 static inline struct device_context *to_device_context(struct hv_device *d)
  60 {
  61         return container_of(d, struct device_context, device_obj);
  62 }
  63
  64 static inline struct device_context *device_to_device_context(struct device *d)
  65 {
  66         return container_of(d, struct device_context, device);
  67 }
  68
  69 static inline struct driver_context *driver_to_driver_context(struct device_driver *d)
  70 {
  71         return container_of(d, struct driver_context, driver);
  72 }
  73
  74
  75 /* Vmbus interface */
  76
  77 int vmbus_child_driver_register(struct driver_context *driver_ctx);
  78 void vmbus_child_driver_unregister(struct driver_context *driver_ctx);
  79 void vmbus_get_interface(struct vmbus_channel_interface *interface);
  80
  81 #endif /* _VMBUS_H_ */