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
16struct i915_request;
17struct intel_engine_cs;
18struct intel_gt;
19struct intel_guc;
20
21void intel_gt_init_reset(struct intel_gt *gt);
22void intel_gt_fini_reset(struct intel_gt *gt);
23
24__printf(4, 5)
25void 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
31void intel_gt_reset(struct intel_gt *gt,
32		    intel_engine_mask_t stalled_mask,
33		    const char *reason);
34int intel_engine_reset(struct intel_engine_cs *engine,
35		       const char *reason);
36int __intel_engine_reset_bh(struct intel_engine_cs *engine,
37			    const char *reason);
38
39void __i915_request_reset(struct i915_request *rq, bool guilty);
40
41int __must_check intel_gt_reset_trylock(struct intel_gt *gt, int *srcu);
42int __must_check intel_gt_reset_lock_interruptible(struct intel_gt *gt, int *srcu);
43void intel_gt_reset_unlock(struct intel_gt *gt, int tag);
44
45void intel_gt_set_wedged(struct intel_gt *gt);
46bool intel_gt_unset_wedged(struct intel_gt *gt);
47int 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 */
54void intel_gt_set_wedged_on_init(struct intel_gt *gt);
55void intel_gt_set_wedged_on_fini(struct intel_gt *gt);
56
57int __intel_gt_reset(struct intel_gt *gt, intel_engine_mask_t engine_mask);
58
59int intel_reset_guc(struct intel_gt *gt);
60
61struct intel_wedge_me {
62	struct delayed_work work;
63	struct intel_gt *gt;
64	const char *name;
65};
66
67void __intel_init_wedge(struct intel_wedge_me *w,
68			struct intel_gt *gt,
69			long timeout,
70			const char *name);
71void __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
78bool intel_has_gpu_reset(const struct intel_gt *gt);
79bool intel_has_reset_engine(const struct intel_gt *gt);
80
81bool intel_engine_reset_needs_wa_22011802037(struct intel_gt *gt);
82
83#endif /* I915_RESET_H */
84