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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 */