sys/dev/drm/include/linux/notifier.h

   1 /*-
   2  * Copyright (c) 2010 Isilon Systems, Inc.
   3  * Copyright (c) 2010 iX Systems, Inc.
   4  * Copyright (c) 2010 Panasas, Inc.
   5  * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
   6  * Copyright (c) 2017-2018 François Tigeot <ftigeot@wolfpond.org>
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice unmodified, this list of conditions, and the following
  14  *    disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #ifndef _LINUX_NOTIFIER_H_
  32 #define _LINUX_NOTIFIER_H_
  33
  34 #include <linux/errno.h>
  35 #include <linux/mutex.h>
  36 #include <linux/rwsem.h>
  37
  38 #include <sys/eventhandler.h>
  39
  40 /*
  41  * Max number of FreeBSD events to map to Linux events per notify type.
  42  */
  43 #define NOTIFY_DONE     0
  44 #define _NOTIFY_COUNT   7
  45
  46 struct notifier_block {
  47         int (*notifier_call)(struct notifier_block *, unsigned long, void *);
  48         struct notifier_block   *next;
  49         int                     priority;
  50         eventhandler_tag        tags[_NOTIFY_COUNT];
  51 };
  52
  53 /* Values must be less than NOTIFY_COUNT */
  54 #define NETDEV_UP               0x0001
  55 #define NETDEV_DOWN             0x0002
  56 #define NETDEV_REGISTER         0x0003
  57 #define NETDEV_UNREGISTER       0x0004
  58 #define NETDEV_CHANGEADDR       0x0005
  59 #define NETDEV_CHANGEIFADDR     0x0006
  60
  61 struct atomic_notifier_head {
  62 };
  63
  64 static inline void
  65 ATOMIC_INIT_NOTIFIER_HEAD(struct atomic_notifier_head *anh)
  66 {
  67 }
  68
  69 static inline int
  70 atomic_notifier_call_chain(struct atomic_notifier_head *anh,
  71                                         unsigned long val, void *v)
  72 {
  73         return 0;
  74 }
  75
  76 #endif  /* _LINUX_NOTIFIER_H_ */