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 16 struct i915_request; 17 struct intel_engine_cs; 18 struct intel_gt; 19 struct intel_guc; 20 21 void intel_gt_init_reset(struct intel_gt *gt); 22 void intel_gt_fini_reset(struct intel_gt *gt); 23 24 __printf(4, 5) 25 void 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 31 void intel_gt_reset(struct intel_gt *gt, 32 intel_engine_mask_t stalled_mask, 33 const char *reason); 34 int intel_engine_reset(struct intel_engine_cs *engine, 35 const char *reason); 36 int __intel_engine_reset_bh(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, int *srcu); 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 /* 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 */ 53 void intel_gt_set_wedged_on_init(struct intel_gt *gt); 54 void intel_gt_set_wedged_on_fini(struct intel_gt *gt); 55 56 int __intel_gt_reset(struct intel_gt *gt, intel_engine_mask_t engine_mask); 57 58 int intel_reset_guc(struct intel_gt *gt); 59 60 struct intel_wedge_me { 61 struct delayed_work work; 62 struct intel_gt *gt; 63 const char *name; 64 }; 65 66 void __intel_init_wedge(struct intel_wedge_me *w, 67 struct intel_gt *gt, 68 long timeout, 69 const char *name); 70 void __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 77 bool intel_has_gpu_reset(const struct intel_gt *gt); 78 bool intel_has_reset_engine(const struct intel_gt *gt); 79 80 #endif /* I915_RESET_H */ 81