19 lines
740 B
C
Executable file
19 lines
740 B
C
Executable file
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_PCI_DIRECT_H
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#define _ASM_X86_PCI_DIRECT_H
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#include <linux/types.h>
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/* Direct PCI access. This is used for PCI accesses in early boot before
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the PCI subsystem works. */
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extern u32 read_pci_config(u8 bus, u8 slot, u8 func, u8 offset);
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extern u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset);
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extern u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset);
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extern void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset, u32 val);
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extern void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val);
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extern void write_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset, u16 val);
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extern int early_pci_allowed(void);
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#endif /* _ASM_X86_PCI_DIRECT_H */
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