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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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2 | #ifndef _ASM_X86_PCI_DIRECT_H |
3 | #define _ASM_X86_PCI_DIRECT_H | |
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4 | |
5 | #include <linux/types.h> | |
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6 | |
7 | /* Direct PCI access. This is used for PCI accesses in early boot before | |
565c6402 | 8 | the PCI subsystem works. */ |
1da177e4 | 9 | |
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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); | |
274e1bbd | 14 | extern void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val); |
e7891c73 | 15 | extern void write_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset, u16 val); |
1da177e4 | 16 | |
0637a70a | 17 | extern int early_pci_allowed(void); |
1965aae3 | 18 | #endif /* _ASM_X86_PCI_DIRECT_H */ |