| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "ui/ozone/platform/drm/gpu/hardware_display_plane_manager_legacy.h" |
| |
| #include <errno.h> |
| #include <sync/sync.h> |
| |
| #include "base/bind.h" |
| #include "base/posix/eintr_wrapper.h" |
| #include "base/task_scheduler/post_task.h" |
| #include "ui/gfx/presentation_feedback.h" |
| #include "ui/ozone/platform/drm/gpu/crtc_controller.h" |
| #include "ui/ozone/platform/drm/gpu/drm_device.h" |
| #include "ui/ozone/platform/drm/gpu/scanout_buffer.h" |
| |
| namespace ui { |
| |
| namespace { |
| |
| const int kInfiniteSyncWaitTimeout = -1; |
| |
| // We currently wait for the fences serially, but it's possible |
| // that merging the fences and waiting on the merged fence fd |
| // is more efficient. We should revisit once we have more info. |
| void WaitForPlaneFences(const ui::OverlayPlaneList& planes) { |
| for (const auto& plane : planes) { |
| if (plane.fence_fd >= 0) |
| sync_wait(plane.fence_fd, kInfiniteSyncWaitTimeout); |
| } |
| } |
| |
| } // namespace |
| |
| HardwareDisplayPlaneManagerLegacy::HardwareDisplayPlaneManagerLegacy() { |
| } |
| |
| HardwareDisplayPlaneManagerLegacy::~HardwareDisplayPlaneManagerLegacy() { |
| } |
| |
| bool HardwareDisplayPlaneManagerLegacy::Commit( |
| HardwareDisplayPlaneList* plane_list, |
| bool test_only) { |
| if (test_only) { |
| for (HardwareDisplayPlane* plane : plane_list->plane_list) { |
| plane->set_in_use(false); |
| } |
| plane_list->plane_list.clear(); |
| plane_list->legacy_page_flips.clear(); |
| return true; |
| } |
| if (plane_list->plane_list.empty()) // No assigned planes, nothing to do. |
| return true; |
| bool ret = true; |
| // The order of operations here (set new planes, pageflip, clear old planes) |
| // is designed to minimze the chance of a significant artifact occurring. |
| // The planes must be updated first because the main plane no longer contains |
| // their content. The old planes are removed last because the previous primary |
| // plane used them as overlays and thus didn't contain their content, so we |
| // must first flip to the new primary plane, which does. The error here will |
| // be the delta of (new contents, old contents), but it should be barely |
| // noticeable. |
| for (const auto& flip : plane_list->legacy_page_flips) { |
| for (const auto& plane : flip.planes) { |
| if (!drm_->PageFlipOverlay(flip.crtc_id, plane.framebuffer, plane.bounds, |
| plane.src_rect, plane.plane)) { |
| PLOG(ERROR) << "Cannot display plane on overlay: crtc=" << flip.crtc |
| << " plane=" << plane.plane; |
| ret = false; |
| flip.crtc->SignalPageFlipRequest(gfx::SwapResult::SWAP_FAILED, |
| gfx::PresentationFeedback()); |
| break; |
| } |
| } |
| if (!drm_->PageFlip(flip.crtc_id, flip.framebuffer, |
| base::BindOnce(&CrtcController::OnPageFlipEvent, |
| flip.crtc->AsWeakPtr()))) { |
| // 1) Permission Denied is a legitimate error. |
| // 2) Device or resource busy is possible if we're page flipping a |
| // disconnected CRTC. Pretend we're fine since a hotplug event is supposed |
| // to be on its way. |
| // NOTE: We could be getting EBUSY if we're trying to page flip a CRTC |
| // that has a pending page flip, however the contract is that the caller |
| // will never attempt this (since the caller should be waiting for the |
| // page flip completion message). |
| if (errno != EACCES && errno != EBUSY) { |
| PLOG(ERROR) << "Cannot page flip: crtc=" << flip.crtc_id |
| << " framebuffer=" << flip.framebuffer; |
| ret = false; |
| } |
| flip.crtc->SignalPageFlipRequest( |
| ret ? gfx::SwapResult::SWAP_ACK : gfx::SwapResult::SWAP_FAILED, |
| gfx::PresentationFeedback()); |
| } |
| } |
| // For each element in |old_plane_list|, if it hasn't been reclaimed (by |
| // this or any other HDPL), clear the overlay contents. |
| for (HardwareDisplayPlane* plane : plane_list->old_plane_list) { |
| if (!plane->in_use() && (plane->type() != HardwareDisplayPlane::kDummy)) { |
| // This plane is being released, so we need to zero it. |
| if (!drm_->PageFlipOverlay(plane->owning_crtc(), 0, gfx::Rect(), |
| gfx::Rect(), plane->plane_id())) { |
| PLOG(ERROR) << "Cannot free overlay: crtc=" << plane->owning_crtc() |
| << " plane=" << plane->plane_id(); |
| ret = false; |
| break; |
| } |
| } |
| } |
| |
| if (ret) { |
| plane_list->plane_list.swap(plane_list->old_plane_list); |
| plane_list->plane_list.clear(); |
| plane_list->legacy_page_flips.clear(); |
| } else { |
| ResetCurrentPlaneList(plane_list); |
| } |
| |
| return ret; |
| } |
| |
| bool HardwareDisplayPlaneManagerLegacy::DisableOverlayPlanes( |
| HardwareDisplayPlaneList* plane_list) { |
| // We're never going to ship legacy pageflip with overlays enabled. |
| DCHECK(std::find_if(plane_list->old_plane_list.begin(), |
| plane_list->old_plane_list.end(), |
| [](HardwareDisplayPlane* plane) { |
| return plane->type() == HardwareDisplayPlane::kOverlay; |
| }) == plane_list->old_plane_list.end()); |
| return true; |
| } |
| |
| bool HardwareDisplayPlaneManagerLegacy::ValidatePrimarySize( |
| const OverlayPlane& primary, |
| const drmModeModeInfo& mode) { |
| DCHECK(primary.buffer.get()); |
| |
| return primary.buffer->GetSize() == gfx::Size(mode.hdisplay, mode.vdisplay); |
| } |
| |
| void HardwareDisplayPlaneManagerLegacy::RequestPlanesReadyCallback( |
| const OverlayPlaneList& planes, |
| base::OnceClosure callback) { |
| base::PostTaskWithTraitsAndReply( |
| FROM_HERE, |
| {base::MayBlock(), base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN}, |
| base::BindOnce(&WaitForPlaneFences, planes), std::move(callback)); |
| } |
| |
| bool HardwareDisplayPlaneManagerLegacy::SetPlaneData( |
| HardwareDisplayPlaneList* plane_list, |
| HardwareDisplayPlane* hw_plane, |
| const OverlayPlane& overlay, |
| uint32_t crtc_id, |
| const gfx::Rect& src_rect, |
| CrtcController* crtc) { |
| // Legacy modesetting rejects transforms. |
| if (overlay.plane_transform != gfx::OVERLAY_TRANSFORM_NONE) |
| return false; |
| if ((hw_plane->type() == HardwareDisplayPlane::kDummy) || |
| plane_list->legacy_page_flips.empty() || |
| plane_list->legacy_page_flips.back().crtc_id != crtc_id) { |
| plane_list->legacy_page_flips.push_back( |
| HardwareDisplayPlaneList::PageFlipInfo( |
| crtc_id, overlay.buffer->GetOpaqueFramebufferId(), crtc)); |
| } else { |
| plane_list->legacy_page_flips.back().planes.push_back( |
| HardwareDisplayPlaneList::PageFlipInfo::Plane( |
| hw_plane->plane_id(), overlay.buffer->GetOpaqueFramebufferId(), |
| overlay.display_bounds, src_rect)); |
| } |
| return true; |
| } |
| |
| bool HardwareDisplayPlaneManagerLegacy::IsCompatible( |
| HardwareDisplayPlane* plane, |
| const OverlayPlane& overlay, |
| uint32_t crtc_index) const { |
| if (!plane->CanUseForCrtc(crtc_index)) |
| return false; |
| |
| // When using legacy kms we always scanout only one plane (the primary), |
| // and we always use the opaque fb. Refer to SetPlaneData above. |
| const uint32_t format = overlay.buffer->GetOpaqueFramebufferPixelFormat(); |
| return plane->IsSupportedFormat(format); |
| } |
| |
| } // namespace ui |