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_reset.h (2223B)

      1/* SPDX-License-Identifier: MIT */
      2/*
      3 * Copyright © 2008-2018 Intel Corporation
      4 */
      5
      6#ifndef I915_RESET_H
      7#define I915_RESET_H
      8
      9#include <linux/compiler.h>
     10#include <linux/types.h>
     11#include <linux/srcu.h>
     12
     13#include "intel_engine_types.h"
     14#include "intel_reset_types.h"
     15
     16struct i915_request;
     17struct intel_engine_cs;
     18struct intel_gt;
     19struct intel_guc;
     20
     21void intel_gt_init_reset(struct intel_gt *gt);
     22void intel_gt_fini_reset(struct intel_gt *gt);
     23
     24__printf(4, 5)
     25void intel_gt_handle_error(struct intel_gt *gt,
     26			   intel_engine_mask_t engine_mask,
     27			   unsigned long flags,
     28			   const char *fmt, ...);
     29#define I915_ERROR_CAPTURE BIT(0)
     30
     31void intel_gt_reset(struct intel_gt *gt,
     32		    intel_engine_mask_t stalled_mask,
     33		    const char *reason);
     34int intel_engine_reset(struct intel_engine_cs *engine,
     35		       const char *reason);
     36int __intel_engine_reset_bh(struct intel_engine_cs *engine,
     37			    const char *reason);
     38
     39void __i915_request_reset(struct i915_request *rq, bool guilty);
     40
     41int __must_check intel_gt_reset_trylock(struct intel_gt *gt, int *srcu);
     42void intel_gt_reset_unlock(struct intel_gt *gt, int tag);
     43
     44void intel_gt_set_wedged(struct intel_gt *gt);
     45bool intel_gt_unset_wedged(struct intel_gt *gt);
     46int intel_gt_terminally_wedged(struct intel_gt *gt);
     47
     48/*
     49 * There's no unset_wedged_on_init paired with this one.
     50 * Once we're wedged on init, there's no going back.
     51 * Same thing for unset_wedged_on_fini.
     52 */
     53void intel_gt_set_wedged_on_init(struct intel_gt *gt);
     54void intel_gt_set_wedged_on_fini(struct intel_gt *gt);
     55
     56int __intel_gt_reset(struct intel_gt *gt, intel_engine_mask_t engine_mask);
     57
     58int intel_reset_guc(struct intel_gt *gt);
     59
     60struct intel_wedge_me {
     61	struct delayed_work work;
     62	struct intel_gt *gt;
     63	const char *name;
     64};
     65
     66void __intel_init_wedge(struct intel_wedge_me *w,
     67			struct intel_gt *gt,
     68			long timeout,
     69			const char *name);
     70void __intel_fini_wedge(struct intel_wedge_me *w);
     71
     72#define intel_wedge_on_timeout(W, GT, TIMEOUT)				\
     73	for (__intel_init_wedge((W), (GT), (TIMEOUT), __func__);	\
     74	     (W)->gt;							\
     75	     __intel_fini_wedge((W)))
     76
     77bool intel_has_gpu_reset(const struct intel_gt *gt);
     78bool intel_has_reset_engine(const struct intel_gt *gt);
     79
     80#endif /* I915_RESET_H */