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kernel/linux-rt-4.4.41/arch/x86/include/asm/pci-direct.h 846 Bytes
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  #ifndef _ASM_X86_PCI_DIRECT_H
  #define _ASM_X86_PCI_DIRECT_H
  
  #include <linux/types.h>
  
  /* Direct PCI access. This is used for PCI accesses in early boot before
     the PCI subsystem works. */
  
  extern u32 read_pci_config(u8 bus, u8 slot, u8 func, u8 offset);
  extern u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset);
  extern u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset);
  extern void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset, u32 val);
  extern void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val);
  extern void write_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset, u16 val);
  
  extern int early_pci_allowed(void);
  
  extern unsigned int pci_early_dump_regs;
  extern void early_dump_pci_device(u8 bus, u8 slot, u8 func);
  extern void early_dump_pci_devices(void);
  #endif /* _ASM_X86_PCI_DIRECT_H */