drivers/gpu/drm/i915/gt/intel_reset.h

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright © 2008-2018 Intel Corporation
   5  */
   6
   7 #ifndef I915_RESET_H
   8 #define I915_RESET_H
   9
  10 #include <linux/compiler.h>
  11 #include <linux/types.h>
  12 #include <linux/srcu.h>
  13
  14 #include "intel_engine_types.h"
  15 #include "intel_reset_types.h"
  16
  17 struct i915_request;
  18 struct intel_engine_cs;
  19 struct intel_gt;
  20 struct intel_guc;
  21
  22 void intel_gt_init_reset(struct intel_gt *gt);
  23 void intel_gt_fini_reset(struct intel_gt *gt);
  24
  25 __printf(4, 5)
  26 void intel_gt_handle_error(struct intel_gt *gt,
  27                            intel_engine_mask_t engine_mask,
  28                            unsigned long flags,
  29                            const char *fmt, ...);
  30 #define I915_ERROR_CAPTURE BIT(0)
  31
  32 void intel_gt_reset(struct intel_gt *gt,
  33                     intel_engine_mask_t stalled_mask,
  34                     const char *reason);
  35 int intel_engine_reset(struct intel_engine_cs *engine,
  36                        const char *reason);
  37
  38 void __i915_request_reset(struct i915_request *rq, bool guilty);
  39
  40 int __must_check intel_gt_reset_trylock(struct intel_gt *gt, int *srcu);
  41 void intel_gt_reset_unlock(struct intel_gt *gt, int tag);
  42
  43 void intel_gt_set_wedged(struct intel_gt *gt);
  44 bool intel_gt_unset_wedged(struct intel_gt *gt);
  45 int intel_gt_terminally_wedged(struct intel_gt *gt);
  46
  47 /*
  48  * There's no unset_wedged_on_init paired with this one.
  49  * Once we're wedged on init, there's no going back.
  50  */
  51 void intel_gt_set_wedged_on_init(struct intel_gt *gt);
  52
  53 int __intel_gt_reset(struct intel_gt *gt, intel_engine_mask_t engine_mask);
  54
  55 int intel_reset_guc(struct intel_gt *gt);
  56
  57 struct intel_wedge_me {
  58         struct delayed_work work;
  59         struct intel_gt *gt;
  60         const char *name;
  61 };
  62
  63 void __intel_init_wedge(struct intel_wedge_me *w,
  64                         struct intel_gt *gt,
  65                         long timeout,
  66                         const char *name);
  67 void __intel_fini_wedge(struct intel_wedge_me *w);
  68
  69 #define intel_wedge_on_timeout(W, GT, TIMEOUT)                          \
  70         for (__intel_init_wedge((W), (GT), (TIMEOUT), __func__);        \
  71              (W)->gt;                                                   \
  72              __intel_fini_wedge((W)))
  73
  74 static inline bool __intel_reset_failed(const struct intel_reset *reset)
  75 {
  76         GEM_BUG_ON(test_bit(I915_WEDGED_ON_INIT, &reset->flags) ?
  77                    !test_bit(I915_WEDGED, &reset->flags) : false);
  78
  79         return unlikely(test_bit(I915_WEDGED, &reset->flags));
  80 }
  81
  82 bool intel_has_gpu_reset(const struct intel_gt *gt);
  83 bool intel_has_reset_engine(const struct intel_gt *gt);
  84
  85 #endif /* I915_RESET_H */