1 #ifndef _ASM_X86_PCI_DIRECT_H 2 #define _ASM_X86_PCI_DIRECT_H 3 4 #include <linux/types.h> 5 6 /* Direct PCI access. This is used for PCI accesses in early boot before 7 the PCI subsystem works. */ 8 9 extern u32 read_pci_config(u8 bus, u8 slot, u8 func, u8 offset); 10 extern u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset); 11 extern u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset); 12 extern void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset, u32 val); 13 extern void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val); 14 extern void write_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset, u16 val); 15 16 extern int early_pci_allowed(void); 17 18 extern unsigned int pci_early_dump_regs; 19 extern void early_dump_pci_device(u8 bus, u8 slot, u8 func); 20 extern void early_dump_pci_devices(void); 21 #endif /* _ASM_X86_PCI_DIRECT_H */ 22