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 list_head        node;
  14         struct dca_ops          *ops;
  15         struct device           *cd;
  16         int                      id;
  17 };
  18
  19 struct dca_ops {
  20         int     (*add_requester)    (struct dca_provider *, struct device *);
  21         int     (*remove_requester) (struct dca_provider *, struct device *);
  22         u8      (*get_tag)          (struct dca_provider *, struct device *,
  23                                      int cpu);
  24         int     (*dev_managed)      (struct dca_provider *, struct device *);
  25 };
  26
  27 struct dca_provider *alloc_dca_provider(struct dca_ops *ops, int priv_size);
  28 void free_dca_provider(struct dca_provider *dca);
  29 int register_dca_provider(struct dca_provider *dca, struct device *dev);
  30 void unregister_dca_provider(struct dca_provider *dca);
  31
  32 static inline void *dca_priv(struct dca_provider *dca)
  33 {
  34         return (void *)dca + sizeof(struct dca_provider);
  35 }
  36
  37 /* Requester API */
  38 #define DCA_GET_TAG_TWO_ARGS
  39 int dca_add_requester(struct device *dev);
  40 int dca_remove_requester(struct device *dev);
  41 u8 dca_get_tag(int cpu);
  42 u8 dca3_get_tag(struct device *dev, int cpu);
  43
  44 /* internal stuff */
  45 int __init dca_sysfs_init(void);
  46 void __exit dca_sysfs_exit(void);
  47 int dca_sysfs_add_provider(struct dca_provider *dca, struct device *dev);
  48 void dca_sysfs_remove_provider(struct dca_provider *dca);
  49 int dca_sysfs_add_req(struct dca_provider *dca, struct device *dev, int slot);
  50 void dca_sysfs_remove_req(struct dca_provider *dca, int slot);
  51
  52 #endif /* DCA_H */