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 int __must_check intel_gt_reset_lock_interruptible(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_engine(struct intel_engine_cs *engine);
58 int intel_gt_reset_all_engines(struct intel_gt *gt);
59 
60 int intel_reset_guc(struct intel_gt *gt);
61 
62 struct intel_wedge_me {
63 	struct delayed_work work;
64 	struct intel_gt *gt;
65 	const char *name;
66 };
67 
68 void __intel_init_wedge(struct intel_wedge_me *w,
69 			struct intel_gt *gt,
70 			long timeout,
71 			const char *name);
72 void __intel_fini_wedge(struct intel_wedge_me *w);
73 
74 #define intel_wedge_on_timeout(W, GT, TIMEOUT)				\
75 	for (__intel_init_wedge((W), (GT), (TIMEOUT), __func__);	\
76 	     (W)->gt;							\
77 	     __intel_fini_wedge((W)))
78 
79 bool intel_has_gpu_reset(const struct intel_gt *gt);
80 bool intel_has_reset_engine(const struct intel_gt *gt);
81 
82 bool intel_engine_reset_needs_wa_22011802037(struct intel_gt *gt);
83 
84 #endif /* I915_RESET_H */
85