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
17struct i915_request;
18struct intel_engine_cs;
19struct intel_gt;
20struct intel_guc;
21
22void intel_gt_init_reset(struct intel_gt *gt);
23void intel_gt_fini_reset(struct intel_gt *gt);
24
25__printf(4, 5)
26void 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
32void intel_gt_reset(struct intel_gt *gt,
33		    intel_engine_mask_t stalled_mask,
34		    const char *reason);
35int intel_engine_reset(struct intel_engine_cs *engine,
36		       const char *reason);
37
38void __i915_request_reset(struct i915_request *rq, bool guilty);
39
40int __must_check intel_gt_reset_trylock(struct intel_gt *gt, int *srcu);
41void intel_gt_reset_unlock(struct intel_gt *gt, int tag);
42
43void intel_gt_set_wedged(struct intel_gt *gt);
44bool intel_gt_unset_wedged(struct intel_gt *gt);
45int intel_gt_terminally_wedged(struct intel_gt *gt);
46
47/*
48 * There's no unset_wedged_on_init paired with this one.
49 * Once we're wedged on init, there's no going back.
50 * Same thing for unset_wedged_on_fini.
51 */
52void intel_gt_set_wedged_on_init(struct intel_gt *gt);
53void intel_gt_set_wedged_on_fini(struct intel_gt *gt);
54
55int __intel_gt_reset(struct intel_gt *gt, intel_engine_mask_t engine_mask);
56
57int intel_reset_guc(struct intel_gt *gt);
58
59struct intel_wedge_me {
60	struct delayed_work work;
61	struct intel_gt *gt;
62	const char *name;
63};
64
65void __intel_init_wedge(struct intel_wedge_me *w,
66			struct intel_gt *gt,
67			long timeout,
68			const char *name);
69void __intel_fini_wedge(struct intel_wedge_me *w);
70
71#define intel_wedge_on_timeout(W, GT, TIMEOUT)				\
72	for (__intel_init_wedge((W), (GT), (TIMEOUT), __func__);	\
73	     (W)->gt;							\
74	     __intel_fini_wedge((W)))
75
76bool intel_has_gpu_reset(const struct intel_gt *gt);
77bool intel_has_reset_engine(const struct intel_gt *gt);
78
79#endif /* I915_RESET_H */