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 drm_i915_private; 18 struct i915_request; 19 struct intel_engine_cs; 20 struct intel_gt; 21 struct intel_guc; 22 23 void intel_gt_init_reset(struct intel_gt *gt); 24 void intel_gt_fini_reset(struct intel_gt *gt); 25 26 __printf(4, 5) 27 void intel_gt_handle_error(struct intel_gt *gt, 28 intel_engine_mask_t engine_mask, 29 unsigned long flags, 30 const char *fmt, ...); 31 #define I915_ERROR_CAPTURE BIT(0) 32 33 void intel_gt_reset(struct intel_gt *gt, 34 intel_engine_mask_t stalled_mask, 35 const char *reason); 36 int intel_engine_reset(struct intel_engine_cs *engine, 37 const char *reason); 38 39 void __i915_request_reset(struct i915_request *rq, bool guilty); 40 41 int __must_check intel_gt_reset_trylock(struct intel_gt *gt); 42 void intel_gt_reset_unlock(struct intel_gt *gt, int tag); 43 44 void intel_gt_set_wedged(struct intel_gt *gt); 45 bool intel_gt_unset_wedged(struct intel_gt *gt); 46 int intel_gt_terminally_wedged(struct intel_gt *gt); 47 48 int __intel_gt_reset(struct intel_gt *gt, intel_engine_mask_t engine_mask); 49 50 int intel_reset_guc(struct intel_gt *gt); 51 52 struct intel_wedge_me { 53 struct delayed_work work; 54 struct intel_gt *gt; 55 const char *name; 56 }; 57 58 void __intel_init_wedge(struct intel_wedge_me *w, 59 struct intel_gt *gt, 60 long timeout, 61 const char *name); 62 void __intel_fini_wedge(struct intel_wedge_me *w); 63 64 #define intel_wedge_on_timeout(W, GT, TIMEOUT) \ 65 for (__intel_init_wedge((W), (GT), (TIMEOUT), __func__); \ 66 (W)->gt; \ 67 __intel_fini_wedge((W))) 68 69 static inline bool __intel_reset_failed(const struct intel_reset *reset) 70 { 71 return unlikely(test_bit(I915_WEDGED, &reset->flags)); 72 } 73 74 bool intel_has_gpu_reset(struct drm_i915_private *i915); 75 bool intel_has_reset_engine(struct drm_i915_private *i915); 76 77 #endif /* I915_RESET_H */ 78