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// SPDX-License-Identifier: MIT
/*
* Copyright © 2023 Intel Corporation
*/
#include <drm/drm_crtc.h>
#include <drm/drm_vblank.h>
#include "gt/intel_rps.h"
#include "i915_drv.h"
#include "i915_reg.h"
#include "intel_display_irq.h"
#include "intel_display_rps.h"
#include "intel_display_types.h"
struct wait_rps_boost {
struct wait_queue_entry wait;
struct drm_crtc *crtc;
struct i915_request *request;
};
static int do_rps_boost(struct wait_queue_entry *_wait,
unsigned mode, int sync, void *key)
{
struct wait_rps_boost *wait = container_of(_wait, typeof(*wait), wait);
struct i915_request *rq = wait->request;
/*
* If we missed the vblank, but the request is already running it
* is reasonable to assume that it will complete before the next
* vblank without our intervention, so leave RPS alone.
*/
if (!i915_request_started(rq))
intel_rps_boost(rq);
i915_request_put(rq);
drm_crtc_vblank_put(wait->crtc);
list_del(&wait->wait.entry);
kfree(wait);
return 1;
}
void intel_display_rps_boost_after_vblank(struct drm_crtc *crtc,
struct dma_fence *fence)
{
struct wait_rps_boost *wait;
if (!dma_fence_is_i915(fence))
return;
if (DISPLAY_VER(to_i915(crtc->dev)) < 6)
return;
if (drm_crtc_vblank_get(crtc))
return;
wait = kmalloc(sizeof(*wait), GFP_KERNEL);
if (!wait) {
drm_crtc_vblank_put(crtc);
return;
}
wait->request = to_request(dma_fence_get(fence));
wait->crtc = crtc;
wait->wait.func = do_rps_boost;
wait->wait.flags = 0;
add_wait_queue(drm_crtc_vblank_waitqueue(crtc), &wait->wait);
}
void intel_display_rps_mark_interactive(struct intel_display *display,
struct intel_atomic_state *state,
bool interactive)
{
struct drm_i915_private *i915 = to_i915(display->drm);
if (state->rps_interactive == interactive)
return;
intel_rps_mark_interactive(&to_gt(i915)->rps, interactive);
state->rps_interactive = interactive;
}
void ilk_display_rps_enable(struct intel_display *display)
{
spin_lock(&display->irq.lock);
ilk_enable_display_irq(display, DE_PCU_EVENT);
spin_unlock(&display->irq.lock);
}
void ilk_display_rps_disable(struct intel_display *display)
{
spin_lock(&display->irq.lock);
ilk_disable_display_irq(display, DE_PCU_EVENT);
spin_unlock(&display->irq.lock);
}
void ilk_display_rps_irq_handler(struct intel_display *display)
{
struct drm_i915_private *i915 = to_i915(display->drm);
gen5_rps_irq_handler(&to_gt(i915)->rps);
}
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