[linux-block.git] / arch / x86 / include / asm / pci-direct.h

/* SPDX-License-Identifier: GPL-2.0 */
#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);
#endif /* _ASM_X86_PCI_DIRECT_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1965aae3 PA	2	#ifndef _ASM_X86_PCI_DIRECT_H
1965aae3 PA	3	#define _ASM_X86_PCI_DIRECT_H
1da177e4 LT	4
1da177e4 LT	5	#include <linux/types.h>
1da177e4 LT	6
1da177e4 LT	7	/* Direct PCI access. This is used for PCI accesses in early boot before
565c6402	8	the PCI subsystem works. */
1da177e4	9
8f60774a AK	10	extern u32 read_pci_config(u8 bus, u8 slot, u8 func, u8 offset);
	11	extern u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset);
	12	extern u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset);
	13	extern void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset, u32 val);
274e1bbd	14	extern void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val);
e7891c73	15	extern void write_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset, u16 val);
1da177e4	16
0637a70a	17	extern int early_pci_allowed(void);
1965aae3	18	#endif /* _ASM_X86_PCI_DIRECT_H */