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include/linux/transport_class.h 2.48 KB
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1da177e4c   Linus Torvalds   Linux-2.6.12-rc2 
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  /*
   * transport_class.h - a generic container for all transport classes
   *
   * Copyright (c) 2005 - James Bottomley <James.Bottomley@steeleye.com>
   *
   * This file is licensed under GPLv2
   */
  
  #ifndef _TRANSPORT_CLASS_H_
  #define _TRANSPORT_CLASS_H_
  
  #include <linux/device.h>
  #include <linux/attribute_container.h>
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  struct transport_container;
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  struct transport_class {
  	struct class class;
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  	int (*setup)(struct transport_container *, struct device *,
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  		     struct device *);
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  	int (*configure)(struct transport_container *, struct device *,
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  			 struct device *);
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  	int (*remove)(struct transport_container *, struct device *,
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  		      struct device *);
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  };
  
  #define DECLARE_TRANSPORT_CLASS(cls, nm, su, rm, cfg)			\
  struct transport_class cls = {						\
  	.class = {							\
  		.name = nm,						\
  	},								\
  	.setup = su,							\
  	.remove = rm,							\
  	.configure = cfg,						\
  }
  
  
  struct anon_transport_class {
  	struct transport_class tclass;
  	struct attribute_container container;
  };
  
  #define DECLARE_ANON_TRANSPORT_CLASS(cls, mtch, cfg)		\
  struct anon_transport_class cls = {				\
  	.tclass = {						\
  		.configure = cfg,				\
  	},							\
  	. container = {						\
  		.match = mtch,					\
  	},							\
  }
  
  #define class_to_transport_class(x) \
  	container_of(x, struct transport_class, class)
  
  struct transport_container {
  	struct attribute_container ac;
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  	const struct attribute_group *statistics;
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  };
  
  #define attribute_container_to_transport_container(x) \
  	container_of(x, struct transport_container, ac)
  
  void transport_remove_device(struct device *);
  void transport_add_device(struct device *);
  void transport_setup_device(struct device *);
  void transport_configure_device(struct device *);
  void transport_destroy_device(struct device *);
  
  static inline void
  transport_register_device(struct device *dev)
  {
  	transport_setup_device(dev);
  	transport_add_device(dev);
  }
  
  static inline void
  transport_unregister_device(struct device *dev)
  {
  	transport_remove_device(dev);
  	transport_destroy_device(dev);
  }
  
  static inline int transport_container_register(struct transport_container *tc)
  {
  	return attribute_container_register(&tc->ac);
  }
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  static inline void transport_container_unregister(struct transport_container *tc)
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  {
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  	if (unlikely(attribute_container_unregister(&tc->ac)))
  		BUG();
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  }
  
  int transport_class_register(struct transport_class *);
  int anon_transport_class_register(struct anon_transport_class *);
  void transport_class_unregister(struct transport_class *);
  void anon_transport_class_unregister(struct anon_transport_class *);
  
  
  #endif