intel_reset.h

 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
31bool intel_gt_gpu_reset_clobbers_display(struct intel_gt *gt);
32
33void intel_gt_reset(struct intel_gt *gt,
34		    intel_engine_mask_t stalled_mask,
35		    const char *reason);
36int intel_engine_reset(struct intel_engine_cs *engine,
37		       const char *reason);
38int __intel_engine_reset_bh(struct intel_engine_cs *engine,
39			    const char *reason);
40
41void __i915_request_reset(struct i915_request *rq, bool guilty);
42
43int __must_check intel_gt_reset_trylock(struct intel_gt *gt, int *srcu);
44int __must_check intel_gt_reset_lock_interruptible(struct intel_gt *gt, int *srcu);
45void intel_gt_reset_unlock(struct intel_gt *gt, int tag);
46
47void intel_gt_set_wedged(struct intel_gt *gt);
48bool intel_gt_unset_wedged(struct intel_gt *gt);
49int 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 */
56void intel_gt_set_wedged_on_init(struct intel_gt *gt);
57void intel_gt_set_wedged_on_fini(struct intel_gt *gt);
58
59int intel_gt_reset_engine(struct intel_engine_cs *engine);
60int intel_gt_reset_all_engines(struct intel_gt *gt);
61
62int intel_reset_guc(struct intel_gt *gt);
63
64struct intel_wedge_me {
65	struct delayed_work work;
66	struct intel_gt *gt;
67	const char *name;
68};
69
70void __intel_init_wedge(struct intel_wedge_me *w,
71			struct intel_gt *gt,
72			long timeout,
73			const char *name);
74void __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
81bool intel_has_gpu_reset(const struct intel_gt *gt);
82bool intel_has_reset_engine(const struct intel_gt *gt);
83
84bool intel_engine_reset_needs_wa_22011802037(struct intel_gt *gt);
85
86#endif /* I915_RESET_H */