summaryrefslogtreecommitdiff
path: root/include/asm-x86/pci-direct.h
blob: 7bd40b4de751f8ca8c7801094f025b7e52b7bf14 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
#ifndef ASM_PCI_DIRECT_H
#define ASM_PCI_DIRECT_H 1

#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);

#endif