include/linux/dca.h

   1 #ifndef DCA_H
   2 #define DCA_H
   3 /* DCA Provider API */
   4
   5 /* DCA Notifier Interface */
   6 void dca_register_notify(struct notifier_block *nb);
   7 void dca_unregister_notify(struct notifier_block *nb);
   8
   9 #define DCA_PROVIDER_ADD     0x0001
  10 #define DCA_PROVIDER_REMOVE  0x0002
  11
  12 struct dca_provider {
  13         struct dca_ops          *ops;
  14         struct device           *cd;
  15         int                      id;
  16 };
  17
  18 struct dca_ops {
  19         int     (*add_requester)    (struct dca_provider *, struct device *);
  20         int     (*remove_requester) (struct dca_provider *, struct device *);
  21         u8      (*get_tag)          (struct dca_provider *, int cpu);
  22 };
  23
  24 struct dca_provider *alloc_dca_provider(struct dca_ops *ops, int priv_size);
  25 void free_dca_provider(struct dca_provider *dca);
  26 int register_dca_provider(struct dca_provider *dca, struct device *dev);
  27 void unregister_dca_provider(struct dca_provider *dca);
  28
  29 static inline void *dca_priv(struct dca_provider *dca)
  30 {
  31         return (void *)dca + sizeof(struct dca_provider);
  32 }
  33
  34 /* Requester API */
  35 int dca_add_requester(struct device *dev);
  36 int dca_remove_requester(struct device *dev);
  37 u8 dca_get_tag(int cpu);
  38
  39 /* internal stuff */
  40 int __init dca_sysfs_init(void);
  41 void __exit dca_sysfs_exit(void);
  42 int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev);
  43 void dca_sysfs_remove_provider(struct dca_provider *dca);
  44 int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot);
  45 void dca_sysfs_remove_req(struct dca_provider *dca, int slot);
  46
  47 #endif /* DCA_H */