cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pc-conf-reg.h (723B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Support for the configuration register space at port I/O locations
      4 * 0x22 and 0x23 variously used by PC architectures, e.g. the MP Spec,
      5 * Cyrix CPUs, numerous chipsets.
      6 */
      7#ifndef _ASM_X86_PC_CONF_REG_H
      8#define _ASM_X86_PC_CONF_REG_H
      9
     10#include <linux/io.h>
     11#include <linux/spinlock.h>
     12#include <linux/types.h>
     13
     14#define PC_CONF_INDEX		0x22
     15#define PC_CONF_DATA		0x23
     16
     17#define PC_CONF_MPS_IMCR	0x70
     18
     19extern raw_spinlock_t pc_conf_lock;
     20
     21static inline u8 pc_conf_get(u8 reg)
     22{
     23	outb(reg, PC_CONF_INDEX);
     24	return inb(PC_CONF_DATA);
     25}
     26
     27static inline void pc_conf_set(u8 reg, u8 data)
     28{
     29	outb(reg, PC_CONF_INDEX);
     30	outb(data, PC_CONF_DATA);
     31}
     32
     33#endif /* _ASM_X86_PC_CONF_REG_H */