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 int __intel_engine_reset_bh(struct intel_engine_cs *engine, 38 const char *reason); 39 40 void __i915_request_reset(struct i915_request *rq, bool guilty); 41 42 int __must_check intel_gt_reset_trylock(struct intel_gt *gt, int *srcu); 43 void intel_gt_reset_unlock(struct intel_gt *gt, int tag); 44 45 void intel_gt_set_wedged(struct intel_gt *gt); 46 bool intel_gt_unset_wedged(struct intel_gt *gt); 47 int intel_gt_terminally_wedged(struct intel_gt *gt); 48 49 /* 50 * There's no unset_wedged_on_init paired with this one. 51 * Once we're wedged on init, there's no going back. 52 * Same thing for unset_wedged_on_fini. 53 */ 54 void intel_gt_set_wedged_on_init(struct intel_gt *gt); 55 void intel_gt_set_wedged_on_fini(struct intel_gt *gt); 56 57 int __intel_gt_reset(struct intel_gt *gt, intel_engine_mask_t engine_mask); 58 59 int intel_reset_guc(struct intel_gt *gt); 60 61 struct intel_wedge_me { 62 struct delayed_work work; 63 struct intel_gt *gt; 64 const char *name; 65 }; 66 67 void __intel_init_wedge(struct intel_wedge_me *w, 68 struct intel_gt *gt, 69 long timeout, 70 const char *name); 71 void __intel_fini_wedge(struct intel_wedge_me *w); 72 73 #define intel_wedge_on_timeout(W, GT, TIMEOUT) \ 74 for (__intel_init_wedge((W), (GT), (TIMEOUT), __func__); \ 75 (W)->gt; \ 76 __intel_fini_wedge((W))) 77 78 bool intel_has_gpu_reset(const struct intel_gt *gt); 79 bool intel_has_reset_engine(const struct intel_gt *gt); 80 81 #endif /* I915_RESET_H */ 82