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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Support for the configuration register space at port I/O locations
- * 0x22 and 0x23 variously used by PC architectures, e.g. the MP Spec,
- * Cyrix CPUs, numerous chipsets.
- */
- #ifndef _ASM_X86_PC_CONF_REG_H
- #define _ASM_X86_PC_CONF_REG_H
- #include <linux/io.h>
- #include <linux/spinlock.h>
- #include <linux/types.h>
- #define PC_CONF_INDEX 0x22
- #define PC_CONF_DATA 0x23
- #define PC_CONF_MPS_IMCR 0x70
- extern raw_spinlock_t pc_conf_lock;
- static inline u8 pc_conf_get(u8 reg)
- {
- outb(reg, PC_CONF_INDEX);
- return inb(PC_CONF_DATA);
- }
- static inline void pc_conf_set(u8 reg, u8 data)
- {
- outb(reg, PC_CONF_INDEX);
- outb(data, PC_CONF_DATA);
- }
- #endif /* _ASM_X86_PC_CONF_REG_H */
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