#ifndef SOUND_FIREWIRE_ISO_RESOURCES_H_INCLUDED
  #define SOUND_FIREWIRE_ISO_RESOURCES_H_INCLUDED
  
  #include <linux/mutex.h>
  #include <linux/types.h>
  
  struct fw_unit;
  
  /**
   * struct fw_iso_resources - manages channel/bandwidth allocation
   * @channels_mask: if the device does not support all channel numbers, set this
   *                 bit mask to something else than the default (all ones)
   *
   * This structure manages (de)allocation of isochronous resources (channel and
   * bandwidth) for one isochronous stream.
   */
  struct fw_iso_resources {
  	u64 channels_mask;
  	/* private: */
  	struct fw_unit *unit;
  	struct mutex mutex;
  	unsigned int channel;
  	unsigned int bandwidth; /* in bandwidth units, without overhead */
  	unsigned int bandwidth_overhead;
  	int generation; /* in which allocation is valid */
  	bool allocated;

  };

  int fw_iso_resources_init(struct fw_iso_resources *r,
  			  struct fw_unit *unit);

  void fw_iso_resources_destroy(struct fw_iso_resources *r);
  
  int fw_iso_resources_allocate(struct fw_iso_resources *r,
  			      unsigned int max_payload_bytes, int speed);
  int fw_iso_resources_update(struct fw_iso_resources *r);
  void fw_iso_resources_free(struct fw_iso_resources *r);
  
  #endif