LXR linux/drivers/gpu/drm/i915/gt/intel

   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 */
  81