include/linux/transport_class.h

   1 /*
   2  * transport_class.h - a generic container for all transport classes
   3  *
   4  * Copyright (c) 2005 - James Bottomley <James.Bottomley@steeleye.com>
   5  *
   6  * This file is licensed under GPLv2
   7  */
   8
   9 #ifndef _TRANSPORT_CLASS_H_
  10 #define _TRANSPORT_CLASS_H_
  11
  12 #include <linux/device.h>
  13 #include <linux/bug.h>
  14 #include <linux/attribute_container.h>
  15
  16 struct transport_container;
  17
  18 struct transport_class {
  19         struct class class;
  20         int (*setup)(struct transport_container *, struct device *,
  21                      struct device *);
  22         int (*configure)(struct transport_container *, struct device *,
  23                          struct device *);
  24         int (*remove)(struct transport_container *, struct device *,
  25                       struct device *);
  26 };
  27
  28 #define DECLARE_TRANSPORT_CLASS(cls, nm, su, rm, cfg)                   \
  29 struct transport_class cls = {                                          \
  30         .class = {                                                      \
  31                 .name = nm,                                             \
  32         },                                                              \
  33         .setup = su,                                                    \
  34         .remove = rm,                                                   \
  35         .configure = cfg,                                               \
  36 }
  37
  38
  39 struct anon_transport_class {
  40         struct transport_class tclass;
  41         struct attribute_container container;
  42 };
  43
  44 #define DECLARE_ANON_TRANSPORT_CLASS(cls, mtch, cfg)            \
  45 struct anon_transport_class cls = {                             \
  46         .tclass = {                                             \
  47                 .configure = cfg,                               \
  48         },                                                      \
  49         . container = {                                         \
  50                 .match = mtch,                                  \
  51         },                                                      \
  52 }
  53
  54 #define class_to_transport_class(x) \
  55         container_of(x, struct transport_class, class)
  56
  57 struct transport_container {
  58         struct attribute_container ac;
  59         const struct attribute_group *statistics;
  60 };
  61
  62 #define attribute_container_to_transport_container(x) \
  63         container_of(x, struct transport_container, ac)
  64
  65 void transport_remove_device(struct device *);
  66 void transport_add_device(struct device *);
  67 void transport_setup_device(struct device *);
  68 void transport_configure_device(struct device *);
  69 void transport_destroy_device(struct device *);
  70
  71 static inline void
  72 transport_register_device(struct device *dev)
  73 {
  74         transport_setup_device(dev);
  75         transport_add_device(dev);
  76 }
  77
  78 static inline void
  79 transport_unregister_device(struct device *dev)
  80 {
  81         transport_remove_device(dev);
  82         transport_destroy_device(dev);
  83 }
  84
  85 static inline int transport_container_register(struct transport_container *tc)
  86 {
  87         return attribute_container_register(&tc->ac);
  88 }
  89
  90 static inline void transport_container_unregister(struct transport_container *tc)
  91 {
  92         if (unlikely(attribute_container_unregister(&tc->ac)))
  93                 BUG();
  94 }
  95
  96 int transport_class_register(struct transport_class *);
  97 int anon_transport_class_register(struct anon_transport_class *);
  98 void transport_class_unregister(struct transport_class *);
  99 void anon_transport_class_unregister(struct anon_transport_class *);
 100
 101
 102 #endif