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/* 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 */