1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _ASM_X86_PCI_DIRECT_H |
3 | #define _ASM_X86_PCI_DIRECT_H |
4 | |
5 | #include <linux/types.h> |
6 | |
7 | /* Direct PCI access. This is used for PCI accesses in early boot before |
8 | the PCI subsystem works. */ |
9 | |
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); |
14 | extern void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val); |
15 | extern void write_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset, u16 val); |
16 | |
17 | extern int early_pci_allowed(void); |
18 | #endif /* _ASM_X86_PCI_DIRECT_H */ |
19 | |