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 bool intel_gt_gpu_reset_clobbers_display(struct intel_gt *gt);
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 int __intel_engine_reset_bh(struct intel_engine_cs *engine,
39 			    const char *reason);
40 
41 void __i915_request_reset(struct i915_request *rq, bool guilty);
42 
43 int __must_check intel_gt_reset_trylock(struct intel_gt *gt, int *srcu);
44 int __must_check intel_gt_reset_lock_interruptible(struct intel_gt *gt, int *srcu);
45 void intel_gt_reset_unlock(struct intel_gt *gt, int tag);
46 
47 void intel_gt_set_wedged(struct intel_gt *gt);
48 bool intel_gt_unset_wedged(struct intel_gt *gt);
49 int intel_gt_terminally_wedged(struct intel_gt *gt);
50 
51 /*
52  * There's no unset_wedged_on_init paired with this one.
53  * Once we're wedged on init, there's no going back.
54  * Same thing for unset_wedged_on_fini.
55  */
56 void intel_gt_set_wedged_on_init(struct intel_gt *gt);
57 void intel_gt_set_wedged_on_fini(struct intel_gt *gt);
58 
59 int intel_gt_reset_engine(struct intel_engine_cs *engine);
60 int intel_gt_reset_all_engines(struct intel_gt *gt);
61 
62 int intel_reset_guc(struct intel_gt *gt);
63 
64 struct intel_wedge_me {
65 	struct delayed_work work;
66 	struct intel_gt *gt;
67 	const char *name;
68 };
69 
70 void __intel_init_wedge(struct intel_wedge_me *w,
71 			struct intel_gt *gt,
72 			long timeout,
73 			const char *name);
74 void __intel_fini_wedge(struct intel_wedge_me *w);
75 
76 #define intel_wedge_on_timeout(W, GT, TIMEOUT)				\
77 	for (__intel_init_wedge((W), (GT), (TIMEOUT), __func__);	\
78 	     (W)->gt;							\
79 	     __intel_fini_wedge((W)))
80 
81 bool intel_has_gpu_reset(const struct intel_gt *gt);
82 bool intel_has_reset_engine(const struct intel_gt *gt);
83 
84 bool intel_engine_reset_needs_wa_22011802037(struct intel_gt *gt);
85 
86 #endif /* I915_RESET_H */
87