| /* 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 u32 pci_early_find_cap(int bus, int slot, int func, int cap); |
| 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 unsigned int pci_early_clear_msi; |
| extern int early_pci_allowed(void); |
| #endif /* _ASM_X86_PCI_DIRECT_H */ |
