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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aspm.h (893B)

      1/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
      2/*
      3 * Copyright(c) 2015-2017 Intel Corporation.
      4 */
      5
      6#ifndef _ASPM_H
      7#define _ASPM_H
      8
      9#include "hfi.h"
     10
     11extern uint aspm_mode;
     12
     13enum aspm_mode {
     14	ASPM_MODE_DISABLED = 0,	/* ASPM always disabled, performance mode */
     15	ASPM_MODE_ENABLED = 1,	/* ASPM always enabled, power saving mode */
     16	ASPM_MODE_DYNAMIC = 2,	/* ASPM enabled/disabled dynamically */
     17};
     18
     19void aspm_init(struct hfi1_devdata *dd);
     20void aspm_exit(struct hfi1_devdata *dd);
     21void aspm_hw_disable_l1(struct hfi1_devdata *dd);
     22void __aspm_ctx_disable(struct hfi1_ctxtdata *rcd);
     23void aspm_disable_all(struct hfi1_devdata *dd);
     24void aspm_enable_all(struct hfi1_devdata *dd);
     25
     26static inline void aspm_ctx_disable(struct hfi1_ctxtdata *rcd)
     27{
     28	/* Quickest exit for minimum impact */
     29	if (likely(!rcd->aspm_intr_supported))
     30		return;
     31
     32	__aspm_ctx_disable(rcd);
     33}
     34
     35#endif /* _ASPM_H */