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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i915_iosf_mbi.h (885B)

      1/* SPDX-License-Identifier: MIT */
      2/*
      3 * Copyright © 2021 Intel Corporation
      4 */
      5
      6#ifndef __I915_IOSF_MBI_H__
      7#define __I915_IOSF_MBI_H__
      8
      9#if IS_ENABLED(CONFIG_IOSF_MBI)
     10#include <asm/iosf_mbi.h>
     11#else
     12
     13/* Stubs to compile for all non-x86 archs */
     14#define MBI_PMIC_BUS_ACCESS_BEGIN       1
     15#define MBI_PMIC_BUS_ACCESS_END         2
     16
     17struct notifier_block;
     18
     19static inline void iosf_mbi_punit_acquire(void) {}
     20static inline void iosf_mbi_punit_release(void) {}
     21static inline void iosf_mbi_assert_punit_acquired(void) {}
     22
     23static inline
     24int iosf_mbi_register_pmic_bus_access_notifier(struct notifier_block *nb)
     25{
     26	return 0;
     27}
     28
     29static inline int
     30iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(struct notifier_block *nb)
     31{
     32	return 0;
     33}
     34
     35static inline
     36int iosf_mbi_unregister_pmic_bus_access_notifier(struct notifier_block *nb)
     37{
     38	return 0;
     39}
     40#endif
     41
     42#endif /* __I915_IOSF_MBI_H__ */