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