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
17 struct drm_i915_private;
18 struct i915_request;
19 struct intel_engine_cs;
20 struct intel_gt;
21 struct intel_guc;
22
23 void intel_gt_init_reset(struct intel_gt *gt);
24 void intel_gt_fini_reset(struct intel_gt *gt);
25
26 __printf(4, 5)
27 void intel_gt_handle_error(struct intel_gt *gt,
28 intel_engine_mask_t engine_mask,
29 unsigned long flags,
30 const char *fmt, ...);
31 #define I915_ERROR_CAPTURE BIT(0)
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
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 void intel_gt_reset_unlock(struct intel_gt *gt, int tag);
43
44 void intel_gt_set_wedged(struct intel_gt *gt);
45 bool intel_gt_unset_wedged(struct intel_gt *gt);
46 int intel_gt_terminally_wedged(struct intel_gt *gt);
47
48 int __intel_gt_reset(struct intel_gt *gt, intel_engine_mask_t engine_mask);
49
50 int intel_reset_guc(struct intel_gt *gt);
51
52 struct intel_wedge_me {
53 struct delayed_work work;
54 struct intel_gt *gt;
55 const char *name;
56 };
57
58 void __intel_init_wedge(struct intel_wedge_me *w,
59 struct intel_gt *gt,
60 long timeout,
61 const char *name);
62 void __intel_fini_wedge(struct intel_wedge_me *w);
63
64 #define intel_wedge_on_timeout(W, GT, TIMEOUT) \
65 for (__intel_init_wedge((W), (GT), (TIMEOUT), __func__); \
66 (W)->gt; \
67 __intel_fini_wedge((W)))
68
__intel_reset_failed(const struct intel_reset * reset)69 static inline bool __intel_reset_failed(const struct intel_reset *reset)
70 {
71 return unlikely(test_bit(I915_WEDGED, &reset->flags));
72 }
73
74 bool intel_has_gpu_reset(struct drm_i915_private *i915);
75 bool intel_has_reset_engine(struct drm_i915_private *i915);
76
77 #endif /* I915_RESET_H */
78
