text: #ifndef DEVICE_PCIEXP_H
  #define DEVICE_PCIEXP_H
  /* (c) 2005 Linux Networx GPL see COPYING for details */
  
  enum aspm_type {
  	PCIE_ASPM_NONE = 0,
  	PCIE_ASPM_L0S  = 1,
  	PCIE_ASPM_L1   = 2,
  	PCIE_ASPM_BOTH = 3,
  };
  
  #define ASPM_LTR_L12_THRESHOLD_VALUE_OFFSET 16
  #define ASPM_LTR_L12_THRESHOLD_VALUE_MASK (0x3ff << ASPM_LTR_L12_THRESHOLD_VALUE_OFFSET)
  #define ASPM_LTR_L12_THRESHOLD_SCALE_OFFSET 29
  #define ASPM_LTR_L12_THRESHOLD_SCALE_MASK (0x7 << ASPM_LTR_L12_THRESHOLD_SCALE_OFFSET)
  
  void pciexp_scan_bus(struct bus *bus, unsigned int min_devfn,
  			     unsigned int max_devfn);
  
  void pciexp_scan_bridge(struct device *dev);
  
  extern struct device_operations default_pciexp_ops_bus;
  
  unsigned int pciexp_find_extended_cap(struct device *dev, unsigned int cap);
  #endif /* DEVICE_PCIEXP_H */
  