1 // SPDX-License-Identifier: MIT
2 /*
3 * Copyright © 2023 Intel Corporation
4 */
5
6 #include <drm/drm_crtc.h>
7 #include <drm/drm_vblank.h>
8
9 #include "gt/intel_rps.h"
10 #include "i915_drv.h"
11 #include "intel_display_rps.h"
12 #include "intel_display_types.h"
13
14 struct wait_rps_boost {
15 struct wait_queue_entry wait;
16
17 struct drm_crtc *crtc;
18 struct i915_request *request;
19 };
20
do_rps_boost(struct wait_queue_entry * _wait,unsigned mode,int sync,void * key)21 static int do_rps_boost(struct wait_queue_entry *_wait,
22 unsigned mode, int sync, void *key)
23 {
24 struct wait_rps_boost *wait = container_of(_wait, typeof(*wait), wait);
25 struct i915_request *rq = wait->request;
26
27 /*
28 * If we missed the vblank, but the request is already running it
29 * is reasonable to assume that it will complete before the next
30 * vblank without our intervention, so leave RPS alone.
31 */
32 if (!i915_request_started(rq))
33 intel_rps_boost(rq);
34 i915_request_put(rq);
35
36 drm_crtc_vblank_put(wait->crtc);
37
38 list_del(&wait->wait.entry);
39 kfree(wait);
40 return 1;
41 }
42
intel_display_rps_boost_after_vblank(struct drm_crtc * crtc,struct dma_fence * fence)43 void intel_display_rps_boost_after_vblank(struct drm_crtc *crtc,
44 struct dma_fence *fence)
45 {
46 struct wait_rps_boost *wait;
47
48 if (!dma_fence_is_i915(fence))
49 return;
50
51 if (DISPLAY_VER(to_i915(crtc->dev)) < 6)
52 return;
53
54 if (drm_crtc_vblank_get(crtc))
55 return;
56
57 wait = kmalloc(sizeof(*wait), GFP_KERNEL);
58 if (!wait) {
59 drm_crtc_vblank_put(crtc);
60 return;
61 }
62
63 wait->request = to_request(dma_fence_get(fence));
64 wait->crtc = crtc;
65
66 wait->wait.func = do_rps_boost;
67 wait->wait.flags = 0;
68
69 add_wait_queue(drm_crtc_vblank_waitqueue(crtc), &wait->wait);
70 }
71
intel_display_rps_mark_interactive(struct drm_i915_private * i915,struct intel_atomic_state * state,bool interactive)72 void intel_display_rps_mark_interactive(struct drm_i915_private *i915,
73 struct intel_atomic_state *state,
74 bool interactive)
75 {
76 if (state->rps_interactive == interactive)
77 return;
78
79 intel_rps_mark_interactive(&to_gt(i915)->rps, interactive);
80 state->rps_interactive = interactive;
81 }
82
