| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 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 */ |