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1 | /* |
2 | * Copyright (c) 2014-2016 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | */ | |
23 | ||
24 | #ifndef __INTEL_FRONTBUFFER_H__ | |
25 | #define __INTEL_FRONTBUFFER_H__ | |
26 | ||
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27 | struct drm_i915_private; |
28 | struct drm_i915_gem_object; | |
29 | ||
5748b6a1 | 30 | void intel_frontbuffer_flip_prepare(struct drm_i915_private *dev_priv, |
5d723d7a | 31 | unsigned frontbuffer_bits); |
5748b6a1 | 32 | void intel_frontbuffer_flip_complete(struct drm_i915_private *dev_priv, |
5d723d7a | 33 | unsigned frontbuffer_bits); |
5748b6a1 | 34 | void intel_frontbuffer_flip(struct drm_i915_private *dev_priv, |
5d723d7a | 35 | unsigned frontbuffer_bits); |
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36 | |
37 | void __intel_fb_obj_invalidate(struct drm_i915_gem_object *obj, | |
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38 | enum fb_op_origin origin, |
39 | unsigned int frontbuffer_bits); | |
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40 | void __intel_fb_obj_flush(struct drm_i915_gem_object *obj, |
41 | bool retire, | |
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42 | enum fb_op_origin origin, |
43 | unsigned int frontbuffer_bits); | |
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44 | |
45 | /** | |
46 | * intel_fb_obj_invalidate - invalidate frontbuffer object | |
47 | * @obj: GEM object to invalidate | |
48 | * @origin: which operation caused the invalidation | |
49 | * | |
50 | * This function gets called every time rendering on the given object starts and | |
51 | * frontbuffer caching (fbc, low refresh rate for DRRS, panel self refresh) must | |
52 | * be invalidated. For ORIGIN_CS any subsequent invalidation will be delayed | |
53 | * until the rendering completes or a flip on this frontbuffer plane is | |
54 | * scheduled. | |
55 | */ | |
5b8c8aec | 56 | static inline bool intel_fb_obj_invalidate(struct drm_i915_gem_object *obj, |
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57 | enum fb_op_origin origin) |
58 | { | |
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59 | unsigned int frontbuffer_bits; |
60 | ||
61 | frontbuffer_bits = atomic_read(&obj->frontbuffer_bits); | |
62 | if (!frontbuffer_bits) | |
5b8c8aec | 63 | return false; |
b5add959 | 64 | |
faf5bf0a | 65 | __intel_fb_obj_invalidate(obj, origin, frontbuffer_bits); |
5b8c8aec | 66 | return true; |
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67 | } |
68 | ||
69 | /** | |
70 | * intel_fb_obj_flush - flush frontbuffer object | |
71 | * @obj: GEM object to flush | |
72 | * @retire: set when retiring asynchronous rendering | |
73 | * @origin: which operation caused the flush | |
74 | * | |
75 | * This function gets called every time rendering on the given object has | |
76 | * completed and frontbuffer caching can be started again. If @retire is true | |
77 | * then any delayed flushes will be unblocked. | |
78 | */ | |
79 | static inline void intel_fb_obj_flush(struct drm_i915_gem_object *obj, | |
80 | bool retire, | |
81 | enum fb_op_origin origin) | |
82 | { | |
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83 | unsigned int frontbuffer_bits; |
84 | ||
85 | frontbuffer_bits = atomic_read(&obj->frontbuffer_bits); | |
86 | if (!frontbuffer_bits) | |
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87 | return; |
88 | ||
faf5bf0a | 89 | __intel_fb_obj_flush(obj, retire, origin, frontbuffer_bits); |
b5add959 | 90 | } |
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91 | |
92 | #endif /* __INTEL_FRONTBUFFER_H__ */ |