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