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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intel_pxp.h (1468B)

      1/* SPDX-License-Identifier: MIT */
      2/*
      3 * Copyright(c) 2020, Intel Corporation. All rights reserved.
      4 */
      5
      6#ifndef __INTEL_PXP_H__
      7#define __INTEL_PXP_H__
      8
      9#include <linux/errno.h>
     10#include <linux/types.h>
     11
     12struct intel_pxp;
     13struct drm_i915_gem_object;
     14
     15#ifdef CONFIG_DRM_I915_PXP
     16struct intel_gt *pxp_to_gt(const struct intel_pxp *pxp);
     17bool intel_pxp_is_enabled(const struct intel_pxp *pxp);
     18bool intel_pxp_is_active(const struct intel_pxp *pxp);
     19
     20void intel_pxp_init(struct intel_pxp *pxp);
     21void intel_pxp_fini(struct intel_pxp *pxp);
     22
     23void intel_pxp_init_hw(struct intel_pxp *pxp);
     24void intel_pxp_fini_hw(struct intel_pxp *pxp);
     25
     26void intel_pxp_mark_termination_in_progress(struct intel_pxp *pxp);
     27
     28int intel_pxp_start(struct intel_pxp *pxp);
     29
     30int intel_pxp_key_check(struct intel_pxp *pxp,
     31			struct drm_i915_gem_object *obj,
     32			bool assign);
     33
     34void intel_pxp_invalidate(struct intel_pxp *pxp);
     35#else
     36static inline void intel_pxp_init(struct intel_pxp *pxp)
     37{
     38}
     39
     40static inline void intel_pxp_fini(struct intel_pxp *pxp)
     41{
     42}
     43
     44static inline int intel_pxp_start(struct intel_pxp *pxp)
     45{
     46	return -ENODEV;
     47}
     48
     49static inline bool intel_pxp_is_enabled(const struct intel_pxp *pxp)
     50{
     51	return false;
     52}
     53
     54static inline bool intel_pxp_is_active(const struct intel_pxp *pxp)
     55{
     56	return false;
     57}
     58
     59static inline int intel_pxp_key_check(struct intel_pxp *pxp,
     60				      struct drm_i915_gem_object *obj,
     61				      bool assign)
     62{
     63	return -ENODEV;
     64}
     65#endif
     66
     67#endif /* __INTEL_PXP_H__ */