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Multi-GPU output support on Wayland 

This commit sets up udev and the DrmBackend to list and use all GPUs.

BUG: 425586
BUG: 417323
master
Xaver Hugl 2020-10-05 21:05:55 +00:00 committed by David Edmundson
parent 1f6e615ec0
commit b50f747876
18 changed files with 635 additions and 424 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
plugins/platforms/drm/CMakeLists.txt
View File

@ -11,6 +11,7 @@ set(DRM_SOURCES
logging.cpp
scene_qpainter_drm_backend.cpp
screens_drm.cpp
drm_gpu.cpp
)
if (HAVE_GBM)

350
plugins/platforms/drm/drm_backend.cpp
View File

@ -47,6 +47,8 @@
#include <xf86drmMode.h>
#include <libdrm/drm_mode.h>
#include "drm_gpu.h"
#ifndef DRM_CAP_CURSOR_WIDTH
#define DRM_CAP_CURSOR_WIDTH 0x8
#endif
@ -77,21 +79,12 @@ DrmBackend::DrmBackend(QObject *parent)
DrmBackend::~DrmBackend()
{
#if HAVE_GBM
if (m_gbmDevice) {
gbm_device_destroy(m_gbmDevice);
}
#endif
if (m_fd >= 0) {
if (m_gpus.size() > 0) {
// wait for pageflips
while (m_pageFlipsPending != 0) {
QCoreApplication::processEvents(QEventLoop::WaitForMoreEvents);
}
qDeleteAll(m_planes);
qDeleteAll(m_crtcs);
qDeleteAll(m_connectors);
close(m_fd);
qDeleteAll(m_gpus);
}
}
@ -243,71 +236,45 @@ void DrmBackend::pageFlipHandler(int fd, unsigned int frame, unsigned int sec, u
void DrmBackend::openDrm()
{
connect(LogindIntegration::self(), &LogindIntegration::sessionActiveChanged, this, &DrmBackend::activate);
UdevDevice::Ptr device = m_udev->primaryGpu();
if (!device) {
std::vector<UdevDevice::Ptr> devices = m_udev->listGPUs();
if (devices.size() == 0) {
qCWarning(KWIN_DRM) << "Did not find a GPU";
return;
}
m_devNode = qEnvironmentVariableIsSet("KWIN_DRM_DEVICE_NODE") ? qgetenv("KWIN_DRM_DEVICE_NODE") : QByteArray(device->devNode());
int fd = LogindIntegration::self()->takeDevice(m_devNode.constData());
if (fd < 0) {
qCWarning(KWIN_DRM) << "failed to open drm device at" << m_devNode;
return;
}
m_fd = fd;
m_active = true;
QSocketNotifier *notifier = new QSocketNotifier(m_fd, QSocketNotifier::Read, this);
connect(notifier, &QSocketNotifier::activated, this,
[this] {
if (!LogindIntegration::self()->isActiveSession()) {
return;
}
drmEventContext e;
memset(&e, 0, sizeof e);
e.version = KWIN_DRM_EVENT_CONTEXT_VERSION;
e.page_flip_handler = pageFlipHandler;
drmHandleEvent(m_fd, &e);
for (unsigned int gpu_index = 0; gpu_index < devices.size(); gpu_index++) {
auto device = std::move(devices.at(gpu_index));
auto devNode = QByteArray(device->devNode());
int fd = LogindIntegration::self()->takeDevice(devNode.constData());
if (fd < 0) {
qCWarning(KWIN_DRM) << "failed to open drm device at" << devNode;
return;
}
);
m_drmId = device->sysNum();
m_active = true;
QSocketNotifier *notifier = new QSocketNotifier(fd, QSocketNotifier::Read, this);
connect(notifier, &QSocketNotifier::activated, this,
[fd] {
if (!LogindIntegration::self()->isActiveSession()) {
return;
}
drmEventContext e;
memset(&e, 0, sizeof e);
e.version = KWIN_DRM_EVENT_CONTEXT_VERSION;
e.page_flip_handler = pageFlipHandler;
drmHandleEvent(fd, &e);
}
);
DrmGpu *gpu = new DrmGpu(this, devNode, fd, device->sysNum());
connect(gpu, &DrmGpu::outputAdded, this, &DrmBackend::addOutput);
connect(gpu, &DrmGpu::outputRemoved, this, &DrmBackend::removeOutput);
m_gpus.append(gpu);
break;
}
// trying to activate Atomic Mode Setting (this means also Universal Planes)
if (!qEnvironmentVariableIsSet("KWIN_DRM_NO_AMS")) {
if (drmSetClientCap(m_fd, DRM_CLIENT_CAP_ATOMIC, 1) == 0) {
qCDebug(KWIN_DRM) << "Using Atomic Mode Setting.";
m_atomicModeSetting = true;
DrmScopedPointer<drmModePlaneRes> planeResources(drmModeGetPlaneResources(m_fd));
if (!planeResources) {
qCWarning(KWIN_DRM) << "Failed to get plane resources. Falling back to legacy mode";
m_atomicModeSetting = false;
}
if (m_atomicModeSetting) {
qCDebug(KWIN_DRM) << "Number of planes:" << planeResources->count_planes;
// create the plane objects
for (unsigned int i = 0; i < planeResources->count_planes; ++i) {
DrmScopedPointer<drmModePlane> kplane(drmModeGetPlane(m_fd, planeResources->planes[i]));
DrmPlane *p = new DrmPlane(kplane->plane_id, m_fd);
if (p->atomicInit()) {
m_planes << p;
if (p->type() == DrmPlane::TypeIndex::Overlay) {
m_overlayPlanes << p;
}
} else {
delete p;
}
}
if (m_planes.isEmpty()) {
qCWarning(KWIN_DRM) << "Failed to create any plane. Falling back to legacy mode";
m_atomicModeSetting = false;
}
}
} else {
qCWarning(KWIN_DRM) << "drmSetClientCap for Atomic Mode Setting failed. Using legacy mode.";
}
for (auto gpu : m_gpus)
gpu->tryAMS();
}
initCursor();
@ -317,7 +284,7 @@ void DrmBackend::openDrm()
if (m_outputs.isEmpty()) {
qCDebug(KWIN_DRM) << "No connected outputs found on startup.";
}
// setup udevMonitor
if (m_udevMonitor) {
m_udevMonitor->filterSubsystemDevType("drm");
@ -330,7 +297,14 @@ void DrmBackend::openDrm()
if (!device) {
return;
}
if (device->sysNum() != m_drmId) {
bool drm = false;
for (auto gpu : m_gpus) {
if (gpu->drmId() == device->sysNum()) {
drm = true;
break;
}
}
if (!drm) {
return;
}
if (device->hasProperty("HOTPLUG", "1")) {
@ -346,176 +320,34 @@ void DrmBackend::openDrm()
setReady(true);
}
void DrmBackend::addOutput(DrmOutput *o)
{
m_outputs.append(o);
m_enabledOutputs.append(o);
emit o->gpu()->outputEnabled(o);
}
void DrmBackend::removeOutput(DrmOutput *o)
{
emit o->gpu()->outputDisabled(o);
m_outputs.removeOne(o);
m_enabledOutputs.removeOne(o);
}
bool DrmBackend::updateOutputs()
{
if (m_fd < 0) {
if (m_gpus.size() == 0) {
return false;
}
DrmScopedPointer<drmModeRes> resources(drmModeGetResources(m_fd));
if (!resources) {
qCWarning(KWIN_DRM) << "drmModeGetResources failed";
return false;
}
auto oldConnectors = m_connectors;
for (int i = 0; i < resources->count_connectors; ++i) {
const uint32_t currentConnector = resources->connectors[i];
auto it = std::find_if(m_connectors.constBegin(), m_connectors.constEnd(), [currentConnector] (DrmConnector *c) { return c->id() == currentConnector; });
if (it == m_connectors.constEnd()) {
auto c = new DrmConnector(currentConnector, m_fd);
if (m_atomicModeSetting && !c->atomicInit()) {
delete c;
continue;
}
m_connectors << c;
} else {
oldConnectors.removeOne(*it);
}
}
auto oldCrtcs = m_crtcs;
for (int i = 0; i < resources->count_crtcs; ++i) {
const uint32_t currentCrtc = resources->crtcs[i];
auto it = std::find_if(m_crtcs.constBegin(), m_crtcs.constEnd(), [currentCrtc] (DrmCrtc *c) { return c->id() == currentCrtc; });
if (it == m_crtcs.constEnd()) {
auto c = new DrmCrtc(currentCrtc, this, i);
if (m_atomicModeSetting && !c->atomicInit()) {
delete c;
continue;
}
m_crtcs << c;
} else {
oldCrtcs.removeOne(*it);
}
}
for (auto c : qAsConst(oldConnectors)) {
m_connectors.removeOne(c);
}
for (auto c : qAsConst(oldCrtcs)) {
m_crtcs.removeOne(c);
}
QVector<DrmOutput*> connectedOutputs;
QVector<DrmConnector*> pendingConnectors;
// split up connected connectors in already or not yet assigned ones
for (DrmConnector *con : qAsConst(m_connectors)) {
if (!con->isConnected()) {
continue;
}
if (DrmOutput *o = findOutput(con->id())) {
connectedOutputs << o;
} else {
pendingConnectors << con;
}
}
// check for outputs which got removed
QVector<DrmOutput*> removedOutputs;
auto it = m_outputs.begin();
while (it != m_outputs.end()) {
if (connectedOutputs.contains(*it)) {
it++;
continue;
}
DrmOutput *removed = *it;
it = m_outputs.erase(it);
m_enabledOutputs.removeOne(removed);
emit outputRemoved(removed);
removedOutputs.append(removed);
}
// now check new connections
for (DrmConnector *con : qAsConst(pendingConnectors)) {
DrmScopedPointer<drmModeConnector> connector(drmModeGetConnector(m_fd, con->id()));
if (!connector) {
continue;
}
if (connector->count_modes == 0) {
continue;
}
bool outputDone = false;
QVector<uint32_t> encoders = con->encoders();
for (auto encId : qAsConst(encoders)) {
DrmScopedPointer<drmModeEncoder> encoder(drmModeGetEncoder(m_fd, encId));
if (!encoder) {
continue;
}
for (DrmCrtc *crtc : qAsConst(m_crtcs)) {
if (!(encoder->possible_crtcs & (1 << crtc->resIndex()))) {
continue;
}
// check if crtc isn't used yet -- currently we don't allow multiple outputs on one crtc (cloned mode)
auto it = std::find_if(connectedOutputs.constBegin(), connectedOutputs.constEnd(),
[crtc] (DrmOutput *o) {
return o->m_crtc == crtc;
}
);
if (it != connectedOutputs.constEnd()) {
continue;
}
// we found a suitable encoder+crtc
// TODO: we could avoid these lib drm calls if we store all struct data in DrmCrtc and DrmConnector in the beginning
DrmScopedPointer<drmModeCrtc> modeCrtc(drmModeGetCrtc(m_fd, crtc->id()));
if (!modeCrtc) {
continue;
}
DrmOutput *output = new DrmOutput(this);
con->setOutput(output);
output->m_conn = con;
crtc->setOutput(output);
output->m_crtc = crtc;
if (modeCrtc->mode_valid) {
output->m_mode = modeCrtc->mode;
} else {
output->m_mode = connector->modes[0];
}
qCDebug(KWIN_DRM) << "For new output use mode " << output->m_mode.name;
if (!output->init(connector.data())) {
qCWarning(KWIN_DRM) << "Failed to create output for connector " << con->id();
delete output;
continue;
}
if (!output->initCursor(m_cursorSize)) {
setSoftWareCursor(true);
}
qCDebug(KWIN_DRM) << "Found new output with uuid" << output->uuid();
connectedOutputs << output;
emit outputAdded(output);
outputDone = true;
break;
}
if (outputDone) {
break;
}
}
}
std::sort(connectedOutputs.begin(), connectedOutputs.end(), [] (DrmOutput *a, DrmOutput *b) { return a->m_conn->id() < b->m_conn->id(); });
m_outputs = connectedOutputs;
m_enabledOutputs = connectedOutputs;
for (auto gpu : m_gpus)
gpu->updateOutputs();
std::sort(m_outputs.begin(), m_outputs.end(), [] (DrmOutput *a, DrmOutput *b) { return a->m_conn->id() < b->m_conn->id(); });
readOutputsConfiguration();
updateOutputsEnabled();
if (!m_outputs.isEmpty()) {
emit screensQueried();
}
for(DrmOutput* removedOutput : removedOutputs) {
removedOutput->teardown();
removedOutput->m_crtc = nullptr;
removedOutput->m_conn = nullptr;
}
qDeleteAll(oldConnectors);
qDeleteAll(oldCrtcs);
return true;
}
@ -574,12 +406,12 @@ void DrmBackend::enableOutput(DrmOutput *output, bool enable)
if (enable) {
Q_ASSERT(!m_enabledOutputs.contains(output));
m_enabledOutputs << output;
emit outputAdded(output);
emit output->gpu()->outputEnabled(output);
} else {
Q_ASSERT(m_enabledOutputs.contains(output));
m_enabledOutputs.removeOne(output);
Q_ASSERT(!m_enabledOutputs.contains(output));
emit outputRemoved(output);
emit output->gpu()->outputDisabled(output);
}
updateOutputsEnabled();
checkOutputsAreOn();
@ -640,6 +472,7 @@ void DrmBackend::initCursor()
if (m_cursorEnabled) {
if (!(*it)->showCursor()) {
setSoftWareCursor(true);
break;
}
} else {
(*it)->hideCursor();
@ -649,15 +482,17 @@ void DrmBackend::initCursor()
);
uint64_t capability = 0;
QSize cursorSize;
if (drmGetCap(m_fd, DRM_CAP_CURSOR_WIDTH, &capability) == 0) {
cursorSize.setWidth(capability);
} else {
cursorSize.setWidth(64);
cursorSize.setWidth(64);
for (auto gpu : m_gpus) {
if (drmGetCap(gpu->fd(), DRM_CAP_CURSOR_WIDTH, &capability) == 0) {
cursorSize.setWidth(capability);
}
}
if (drmGetCap(m_fd, DRM_CAP_CURSOR_HEIGHT, &capability) == 0) {
cursorSize.setHeight(capability);
} else {
cursorSize.setHeight(64);
cursorSize.setHeight(64);
for (auto gpu : m_gpus) {
if (drmGetCap(gpu->fd(), DRM_CAP_CURSOR_HEIGHT, &capability) == 0) {
cursorSize.setHeight(capability);
}
}
m_cursorSize = cursorSize;
// now we have screens and can set cursors, so start tracking
@ -735,7 +570,7 @@ Screens *DrmBackend::createScreens(QObject *parent)
QPainterBackend *DrmBackend::createQPainterBackend()
{
m_deleteBufferAfterPageFlip = false;
return new DrmQPainterBackend(this);
return new DrmQPainterBackend(this, m_gpus.at(0));
}
OpenGLBackend *DrmBackend::createOpenGLBackend()
@ -743,32 +578,18 @@ OpenGLBackend *DrmBackend::createOpenGLBackend()
#if HAVE_EGL_STREAMS
if (m_useEglStreams) {
m_deleteBufferAfterPageFlip = false;
return new EglStreamBackend(this);
return new EglStreamBackend(this, m_gpus.at(0));
}
#endif
#if HAVE_GBM
m_deleteBufferAfterPageFlip = true;
return new EglGbmBackend(this);
return new EglGbmBackend(this, m_gpus.at(0));
#else
return Platform::createOpenGLBackend();
#endif
}
DrmDumbBuffer *DrmBackend::createBuffer(const QSize &size)
{
DrmDumbBuffer *b = new DrmDumbBuffer(m_fd, size);
return b;
}
#if HAVE_GBM
DrmSurfaceBuffer *DrmBackend::createBuffer(const std::shared_ptr<GbmSurface> &surface)
{
DrmSurfaceBuffer *b = new DrmSurfaceBuffer(m_fd, surface);
return b;
}
#endif
void DrmBackend::updateOutputsEnabled()
{
bool enabled = false;
@ -801,7 +622,9 @@ QString DrmBackend::supportInformation() const
s.nospace();
s << "Name: " << "DRM" << Qt::endl;
s << "Active: " << m_active << Qt::endl;
s << "Atomic Mode Setting: " << m_atomicModeSetting << Qt::endl;
for (int g = 0; g < m_gpus.size(); g++) {
s << "Atomic Mode Setting on GPU " << g << ": " << m_gpus.at(g)->atomicModeSetting() << Qt::endl;
}
#if HAVE_EGL_STREAMS
s << "Using EGL Streams: " << m_useEglStreams << Qt::endl;
#endif
@ -811,7 +634,10 @@ QString DrmBackend::supportInformation() const
DmaBufTexture *DrmBackend::createDmaBufTexture(const QSize &size)
{
#if HAVE_GBM
return GbmDmaBuf::createBuffer(size, m_gbmDevice);
// gpu_index is a fixed 0 here
// as the first GPU is assumed to always be the one used for scene rendering
// and this function is only used for Pipewire
return GbmDmaBuf::createBuffer(size, m_gpus.at(0)->gbmDevice());
#else
return nullptr;
#endif

61
plugins/platforms/drm/drm_backend.h
View File

@ -43,6 +43,7 @@ class DrmCrtc;
class DrmConnector;
class GbmSurface;
class Cursor;
class DrmGpu;
class KWIN_EXPORT DrmBackend : public Platform
{
@ -60,16 +61,9 @@ public:
void init() override;
void prepareShutdown() override;
DrmDumbBuffer *createBuffer(const QSize &size);
#if HAVE_GBM
DrmSurfaceBuffer *createBuffer(const std::shared_ptr<GbmSurface> &surface);
#endif
bool present(DrmBuffer *buffer, DrmOutput *output);
int fd() const {
return m_fd;
}
Outputs outputs() const override;
Outputs enabledOutputs() const override;
QVector<DrmOutput*> drmOutputs() const {
@ -81,13 +75,6 @@ public:
void enableOutput(DrmOutput *output, bool enable);
QVector<DrmPlane*> planes() const {
return m_planes;
}
QVector<DrmPlane*> overlayPlanes() const {
return m_overlayPlanes;
}
void createDpmsFilter();
void checkOutputsAreOn();
@ -95,21 +82,6 @@ public:
bool deleteBufferAfterPageFlip() const {
return m_deleteBufferAfterPageFlip;
}
// returns use of AMS, default is not/legacy
bool atomicModeSetting() const {
return m_atomicModeSetting;
}
void setGbmDevice(gbm_device *device) {
m_gbmDevice = device;
}
gbm_device *gbmDevice() const {
return m_gbmDevice;
}
QByteArray devNode() const {
return m_devNode;
}
#if HAVE_EGL_STREAMS
bool useEglStreams() const {
@ -128,22 +100,13 @@ public:
public Q_SLOTS:
void turnOutputsOn();
Q_SIGNALS:
/**
* Emitted whenever an output is removed/disabled
*/
void outputRemoved(KWin::DrmOutput *output);
/**
* Emitted whenever an output is added/enabled
*/
void outputAdded(KWin::DrmOutput *output);
protected:
void doHideCursor() override;
void doShowCursor() override;
private:
friend class DrmGpu;
void addOutput(DrmOutput* output);
void removeOutput(DrmOutput* output);
static void pageFlipHandler(int fd, unsigned int frame, unsigned int sec, unsigned int usec, void *data);
void openDrm();
void activate(bool active);
@ -161,32 +124,22 @@ private:
void updateOutputsEnabled();
QScopedPointer<Udev> m_udev;
QScopedPointer<UdevMonitor> m_udevMonitor;
int m_fd = -1;
int m_drmId = 0;
// all crtcs
QVector<DrmCrtc*> m_crtcs;
// all connectors
QVector<DrmConnector*> m_connectors;
// active output pipelines (planes + crtc + encoder + connector)
QVector<DrmOutput*> m_outputs;
// active and enabled pipelines (above + wl_output)
QVector<DrmOutput*> m_enabledOutputs;
bool m_deleteBufferAfterPageFlip;
bool m_atomicModeSetting = false;
bool m_cursorEnabled = false;
QSize m_cursorSize;
int m_pageFlipsPending = 0;
bool m_active = false;
QByteArray m_devNode;
#if HAVE_EGL_STREAMS
bool m_useEglStreams = false;
#endif
// all available planes: primarys, cursors and overlays
QVector<DrmPlane*> m_planes;
QVector<DrmPlane*> m_overlayPlanes;
QVector<DrmGpu*> m_gpus;
QScopedPointer<DpmsInputEventFilter> m_dpmsFilter;
gbm_device *m_gbmDevice = nullptr;
};

273
plugins/platforms/drm/drm_gpu.cpp Normal file
View File

@ -0,0 +1,273 @@
/*
KWin - the KDE window manager
This file is part of the KDE project.
SPDX-FileCopyrightText: 2020 Xaver Hugl <xaver.hugl@gmail.com>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "drm_gpu.h"
#include "drm_backend.h"
#include "drm_output.h"
#include "drm_object_connector.h"
#include "drm_object_crtc.h"
#include "abstract_egl_backend.h"
#include "logging.h"
#if HAVE_GBM
#include "egl_gbm_backend.h"
#include <gbm.h>
#include "gbm_dmabuf.h"
#endif
// system
#include <algorithm>
#include <unistd.h>
// drm
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <libdrm/drm_mode.h>
namespace KWin
{
DrmGpu::DrmGpu(DrmBackend *backend, QByteArray devNode, int fd, int drmId) : m_backend(backend), m_devNode(devNode), m_fd(fd), m_drmId(drmId), m_atomicModeSetting(false), m_useEglStreams(false), m_gbmDevice(nullptr)
{
}
DrmGpu::~DrmGpu()
{
#if HAVE_GBM
gbm_device_destroy(m_gbmDevice);
#endif
qDeleteAll(m_crtcs);
qDeleteAll(m_connectors);
qDeleteAll(m_planes);
close(m_fd);
}
void DrmGpu::tryAMS()
{
m_atomicModeSetting = false;
if (drmSetClientCap(m_fd, DRM_CLIENT_CAP_ATOMIC, 1) == 0) {
bool ams = true;
QVector<DrmPlane*> planes, overlayPlanes;
DrmScopedPointer<drmModePlaneRes> planeResources(drmModeGetPlaneResources(m_fd));
if (!planeResources) {
qCWarning(KWIN_DRM) << "Failed to get plane resources. Falling back to legacy mode on GPU " << m_devNode;
ams = false;
}
if (ams) {
qCDebug(KWIN_DRM) << "Using Atomic Mode Setting on gpu" << m_devNode;
qCDebug(KWIN_DRM) << "Number of planes on GPU" << m_devNode << ":" << planeResources->count_planes;
// create the plane objects
for (unsigned int i = 0; i < planeResources->count_planes; ++i) {
DrmScopedPointer<drmModePlane> kplane(drmModeGetPlane(m_fd, planeResources->planes[i]));
DrmPlane *p = new DrmPlane(kplane->plane_id, m_fd);
if (p->atomicInit()) {
planes << p;
if (p->type() == DrmPlane::TypeIndex::Overlay) {
overlayPlanes << p;
}
} else {
delete p;
}
}
if (planes.isEmpty()) {
qCWarning(KWIN_DRM) << "Failed to create any plane. Falling back to legacy mode on GPU " << m_devNode;
ams = false;
}
}
if (!ams) {
for (auto p : planes) {
delete p;
}
planes.clear();
overlayPlanes.clear();
}
m_atomicModeSetting = ams;
m_planes = planes;
m_overlayPlanes = overlayPlanes;
} else {
qCWarning(KWIN_DRM) << "drmSetClientCap for Atomic Mode Setting failed. Using legacy mode on GPU" << m_devNode;
}
}
bool DrmGpu::updateOutputs()
{
auto oldConnectors = m_connectors;
auto oldCrtcs = m_crtcs;
DrmScopedPointer<drmModeRes> resources(drmModeGetResources(m_fd));
if (!resources) {
qCWarning(KWIN_DRM) << "drmModeGetResources failed";
return false;
}
for (int i = 0; i < resources->count_connectors; ++i) {
const uint32_t currentConnector = resources->connectors[i];
auto it = std::find_if(m_connectors.constBegin(), m_connectors.constEnd(), [currentConnector] (DrmConnector *c) { return c->id() == currentConnector; });
if (it == m_connectors.constEnd()) {
auto c = new DrmConnector(currentConnector, m_fd);
if (m_atomicModeSetting && !c->atomicInit()) {
delete c;
continue;
}
m_connectors << c;
} else {
oldConnectors.removeOne(*it);
}
}
for (int i = 0; i < resources->count_crtcs; ++i) {
const uint32_t currentCrtc = resources->crtcs[i];
auto it = std::find_if(m_crtcs.constBegin(), m_crtcs.constEnd(), [currentCrtc] (DrmCrtc *c) { return c->id() == currentCrtc; });
if (it == m_crtcs.constEnd()) {
auto c = new DrmCrtc(currentCrtc, m_backend, this, i);
if (m_atomicModeSetting && !c->atomicInit()) {
delete c;
continue;
}
m_crtcs << c;
} else {
oldCrtcs.removeOne(*it);
}
}
for (auto c : qAsConst(oldConnectors)) {
m_connectors.removeOne(c);
}
for (auto c : qAsConst(oldCrtcs)) {
m_crtcs.removeOne(c);
}
QVector<DrmOutput*> connectedOutputs;
QVector<DrmConnector*> pendingConnectors;
// split up connected connectors in already or not yet assigned ones
for (DrmConnector *con : qAsConst(m_connectors)) {
if (!con->isConnected()) {
continue;
}
if (DrmOutput *o = findOutput(con->id())) {
connectedOutputs << o;
} else {
pendingConnectors << con;
}
}
// check for outputs which got removed
QVector<DrmOutput*> removedOutputs;
auto it = m_outputs.begin();
while (it != m_outputs.end()) {
if (connectedOutputs.contains(*it)) {
it++;
continue;
}
DrmOutput *removed = *it;
it = m_outputs.erase(it);
removedOutputs.append(removed);
}
for (DrmConnector *con : qAsConst(pendingConnectors)) {
DrmScopedPointer<drmModeConnector> connector(drmModeGetConnector(m_fd, con->id()));
if (!connector) {
continue;
}
if (connector->count_modes == 0) {
continue;
}
bool outputDone = false;
QVector<uint32_t> encoders = con->encoders();
for (auto encId : qAsConst(encoders)) {
DrmScopedPointer<drmModeEncoder> encoder(drmModeGetEncoder(m_fd, encId));
if (!encoder) {
continue;
}
for (DrmCrtc *crtc : qAsConst(m_crtcs)) {
if (!(encoder->possible_crtcs & (1 << crtc->resIndex()))) {
continue;
}
// check if crtc isn't used yet -- currently we don't allow multiple outputs on one crtc (cloned mode)
auto it = std::find_if(connectedOutputs.constBegin(), connectedOutputs.constEnd(),
[crtc] (DrmOutput *o) {
return o->m_crtc == crtc;
}
);
if (it != connectedOutputs.constEnd()) {
continue;
}
// we found a suitable encoder+crtc
// TODO: we could avoid these lib drm calls if we store all struct data in DrmCrtc and DrmConnector in the beginning
DrmScopedPointer<drmModeCrtc> modeCrtc(drmModeGetCrtc(m_fd, crtc->id()));
if (!modeCrtc) {
continue;
}
DrmOutput *output = new DrmOutput(this->m_backend, this);
con->setOutput(output);
output->m_conn = con;
crtc->setOutput(output);
output->m_crtc = crtc;
if (modeCrtc->mode_valid) {
output->m_mode = modeCrtc->mode;
} else {
output->m_mode = connector->modes[0];
}
qCDebug(KWIN_DRM) << "For new output use mode " << output->m_mode.name;
if (!output->init(connector.data())) {
qCWarning(KWIN_DRM) << "Failed to create output for connector " << con->id();
delete output;
continue;
}
if (!output->initCursor(m_backend->m_cursorSize)) {
m_backend->setSoftWareCursor(true);
}
qCDebug(KWIN_DRM) << "Found new output with uuid" << output->uuid();
connectedOutputs << output;
emit outputAdded(output);
outputDone = true;
break;
}
if (outputDone) {
break;
}
}
}
std::sort(connectedOutputs.begin(), connectedOutputs.end(), [] (DrmOutput *a, DrmOutput *b) { return a->m_conn->id() < b->m_conn->id(); });
m_outputs = connectedOutputs;
for(DrmOutput *removedOutput : removedOutputs) {
emit outputRemoved(removedOutput);
removedOutput->teardown();
removedOutput->m_crtc = nullptr;
removedOutput->m_conn = nullptr;
}
qDeleteAll(oldConnectors);
qDeleteAll(oldCrtcs);
return true;
}
DrmOutput *DrmGpu::findOutput(quint32 connector)
{
auto it = std::find_if(m_outputs.constBegin(), m_outputs.constEnd(), [connector] (DrmOutput *o) {
return o->m_conn->id() == connector;
});
if (it != m_outputs.constEnd()) {
return *it;
}
return nullptr;
}
}

111
plugins/platforms/drm/drm_gpu.h Normal file
View File

@ -0,0 +1,111 @@
/*
KWin - the KDE window manager
This file is part of the KDE project.
SPDX-FileCopyrightText: 2020 Xaver Hugl <xaver.hugl@gmail.com>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef DRM_GPU_H
#define DRM_GPU_H
#include <qobject.h>
#include <QVector>
#include "drm_buffer.h"
struct gbm_device;
namespace KWin
{
class DrmOutput;
class DrmPlane;
class DrmCrtc;
class DrmConnector;
class DrmBackend;
class AbstractEglBackend;
class DrmGpu : public QObject
{
Q_OBJECT
public:
DrmGpu(DrmBackend *backend, QByteArray devNode, int fd, int drmId);
~DrmGpu();
// getters
QVector<DrmOutput*> outputs() const {
return m_outputs;
}
int fd() const {
return m_fd;
}
int drmId() const {
return m_drmId;
}
bool atomicModeSetting() const {
return m_atomicModeSetting;
}
QByteArray devNode() const {
return m_devNode;
}
gbm_device *gbmDevice() const {
return m_gbmDevice;
}
QVector<DrmPlane*> planes() const {
return m_planes;
}
void setGbmDevice(gbm_device *d) {
m_gbmDevice = d;
}
DrmDumbBuffer *createBuffer(const QSize &size) const {
return new DrmDumbBuffer(m_fd, size);
}
Q_SIGNALS:
void outputAdded(DrmOutput *output);
void outputRemoved(DrmOutput *output);
void outputEnabled(DrmOutput *output);
void outputDisabled(DrmOutput *output);
protected:
friend class DrmBackend;
void tryAMS();
bool updateOutputs();
private:
DrmOutput *findOutput(quint32 connector);
DrmBackend* const m_backend;
const QByteArray m_devNode;
const int m_fd;
const int m_drmId;
bool m_atomicModeSetting;
bool m_useEglStreams;
gbm_device* m_gbmDevice;
// all available planes: primarys, cursors and overlays
QVector<DrmPlane*> m_planes;
QVector<DrmPlane*> m_overlayPlanes;
// crtcs
QVector<DrmCrtc*> m_crtcs;
// connectors
QVector<DrmConnector*> m_connectors;
// active output pipelines (planes + crtc + encoder + connector)
QVector<DrmOutput*> m_outputs;
};
}
#endif // DRM_GPU_H

16
plugins/platforms/drm/drm_object_crtc.cpp
View File

@ -12,16 +12,18 @@
#include "drm_buffer.h"
#include "drm_pointer.h"
#include "logging.h"
#include "drm_gpu.h"
namespace KWin
{
DrmCrtc::DrmCrtc(uint32_t crtc_id, DrmBackend *backend, int resIndex)
: DrmObject(crtc_id, backend->fd()),
DrmCrtc::DrmCrtc(uint32_t crtc_id, DrmBackend *backend, DrmGpu *gpu, int resIndex)
: DrmObject(crtc_id, gpu->fd()),
m_resIndex(resIndex),
m_backend(backend)
m_backend(backend),
m_gpu(gpu)
{
DrmScopedPointer<drmModeCrtc> modeCrtc(drmModeGetCrtc(backend->fd(), crtc_id));
DrmScopedPointer<drmModeCrtc> modeCrtc(drmModeGetCrtc(gpu->fd(), crtc_id));
if (modeCrtc) {
m_gammaRampSize = modeCrtc->gamma_size;
}
@ -81,12 +83,12 @@ bool DrmCrtc::blank()
return false;
}
if (m_backend->atomicModeSetting()) {
if (m_gpu->atomicModeSetting()) {
return false;
}
if (!m_blackBuffer) {
DrmDumbBuffer *blackBuffer = m_backend->createBuffer(m_output->pixelSize());
DrmDumbBuffer *blackBuffer = m_gpu->createBuffer(m_output->pixelSize());
if (!blackBuffer->map()) {
delete blackBuffer;
return false;
@ -113,7 +115,7 @@ bool DrmCrtc::setGammaRamp(const GammaRamp &gamma)
uint16_t *green = const_cast<uint16_t *>(gamma.green());
uint16_t *blue = const_cast<uint16_t *>(gamma.blue());
const bool isError = drmModeCrtcSetGamma(m_backend->fd(), m_id,
const bool isError = drmModeCrtcSetGamma(m_gpu->fd(), m_id,
gamma.size(), red, green, blue);
return !isError;

8
plugins/platforms/drm/drm_object_crtc.h
View File

@ -18,11 +18,12 @@ class DrmBackend;
class DrmBuffer;
class DrmDumbBuffer;
class GammaRamp;
class DrmGpu;
class DrmCrtc : public DrmObject
{
public:
DrmCrtc(uint32_t crtc_id, DrmBackend *backend, int resIndex);
DrmCrtc(uint32_t crtc_id, DrmBackend *backend, DrmGpu *gpu, int resIndex);
~DrmCrtc() override;
@ -57,6 +58,10 @@ public:
return m_gammaRampSize;
}
bool setGammaRamp(const GammaRamp &gamma);
DrmGpu *gpu() {
return m_gpu;
}
private:
int m_resIndex;
@ -66,6 +71,7 @@ private:
DrmBuffer *m_nextBuffer = nullptr;
DrmDumbBuffer *m_blackBuffer = nullptr;
DrmBackend *m_backend;
DrmGpu *m_gpu;
};
}

75
plugins/platforms/drm/drm_output.cpp
View File

@ -36,12 +36,15 @@
#include <xf86drmMode.h>
#include <libdrm/drm_mode.h>
#include "drm_gpu.h"
namespace KWin
{
DrmOutput::DrmOutput(DrmBackend *backend)
DrmOutput::DrmOutput(DrmBackend *backend, DrmGpu *gpu)
: AbstractWaylandOutput(backend)
, m_backend(backend)
, m_gpu(gpu)
{
}
@ -96,13 +99,13 @@ void DrmOutput::releaseGbm()
bool DrmOutput::hideCursor()
{
return drmModeSetCursor(m_backend->fd(), m_crtc->id(), 0, 0, 0) == 0;
return drmModeSetCursor(m_gpu->fd(), m_crtc->id(), 0, 0, 0) == 0;
}
bool DrmOutput::showCursor(DrmDumbBuffer *c)
{
const QSize &s = c->size();
return drmModeSetCursor(m_backend->fd(), m_crtc->id(), c->handle(), s.width(), s.height()) == 0;
return drmModeSetCursor(m_gpu->fd(), m_crtc->id(), c->handle(), s.width(), s.height()) == 0;
}
bool DrmOutput::showCursor()
@ -118,6 +121,7 @@ bool DrmOutput::showCursor()
const bool ret = showCursor(m_cursor[m_cursorIndex].data());
if (!ret) {
qCDebug(KWIN_DRM) << "DrmOutput::showCursor(DrmDumbBuffer) failed";
return ret;
}
@ -164,7 +168,7 @@ void DrmOutput::updateCursor()
p.end();
}
void DrmOutput::moveCursor(Cursor* cursor, const QPoint &globalPos)
void DrmOutput::moveCursor(Cursor *cursor, const QPoint &globalPos)
{
const QMatrix4x4 hotspotMatrix = matrixDisplay(cursor->image().size());
@ -194,7 +198,7 @@ void DrmOutput::moveCursor(Cursor* cursor, const QPoint &globalPos)
}
pos *= scale();
pos -= hotspotMatrix.map(cursor->hotspot());
drmModeMoveCursor(m_backend->fd(), m_crtc->id(), pos.x(), pos.y());
drmModeMoveCursor(m_gpu->fd(), m_crtc->id(), pos.x(), pos.y());
}
static QHash<int, QByteArray> s_connectorNames = {
@ -244,7 +248,7 @@ bool DrmOutput::init(drmModeConnector *connector)
initEdid(connector);
initDpms(connector);
initUuid();
if (m_backend->atomicModeSetting()) {
if (m_gpu->atomicModeSetting()) {
if (!initPrimaryPlane()) {
return false;
}
@ -255,7 +259,7 @@ bool DrmOutput::init(drmModeConnector *connector)
setDpmsSupported(true);
initOutputDevice(connector);
if (!m_backend->atomicModeSetting() && !m_crtc->blank()) {
if (!m_gpu->atomicModeSetting() && !m_crtc->blank()) {
// We use legacy mode and the initial output blank failed.
return false;
}
@ -361,12 +365,12 @@ void DrmOutput::initEdid(drmModeConnector *connector)
{
DrmScopedPointer<drmModePropertyBlobRes> edid;
for (int i = 0; i < connector->count_props; ++i) {
DrmScopedPointer<drmModePropertyRes> property(drmModeGetProperty(m_backend->fd(), connector->props[i]));
DrmScopedPointer<drmModePropertyRes> property(drmModeGetProperty(m_gpu->fd(), connector->props[i]));
if (!property) {
continue;
}
if ((property->flags & DRM_MODE_PROP_BLOB) && qstrcmp(property->name, "EDID") == 0) {
edid.reset(drmModeGetPropertyBlob(m_backend->fd(), connector->prop_values[i]));
edid.reset(drmModeGetPropertyBlob(m_gpu->fd(), connector->prop_values[i]));
}
}
if (!edid) {
@ -381,8 +385,8 @@ void DrmOutput::initEdid(drmModeConnector *connector)
bool DrmOutput::initPrimaryPlane()
{
for (int i = 0; i < m_backend->planes().size(); ++i) {
DrmPlane* p = m_backend->planes()[i];
for (int i = 0; i < m_gpu->planes().size(); ++i) {
DrmPlane *p = m_gpu->planes()[i];
if (!p) {
continue;
}
@ -409,8 +413,8 @@ bool DrmOutput::initPrimaryPlane()
bool DrmOutput::initCursorPlane() // TODO: Add call in init (but needs layer support in general first)
{
for (int i = 0; i < m_backend->planes().size(); ++i) {
DrmPlane* p = m_backend->planes()[i];
for (int i = 0; i < m_gpu->planes().size(); ++i) {
DrmPlane *p = m_gpu->planes()[i];
if (!p) {
continue;
}
@ -437,7 +441,7 @@ bool DrmOutput::initCursorPlane() // TODO: Add call in init (but needs lay
bool DrmOutput::initCursor(const QSize &cursorSize)
{
auto createCursor = [this, cursorSize] (int index) {
m_cursor[index].reset(m_backend->createBuffer(cursorSize));
m_cursor[index].reset(m_gpu->createBuffer(cursorSize));
if (!m_cursor[index]->map(QImage::Format_ARGB32_Premultiplied)) {
return false;
}
@ -452,7 +456,7 @@ bool DrmOutput::initCursor(const QSize &cursorSize)
void DrmOutput::initDpms(drmModeConnector *connector)
{
for (int i = 0; i < connector->count_props; ++i) {
DrmScopedPointer<drmModePropertyRes> property(drmModeGetProperty(m_backend->fd(), connector->props[i]));
DrmScopedPointer<drmModePropertyRes> property(drmModeGetProperty(m_gpu->fd(), connector->props[i]));
if (!property) {
continue;
}
@ -467,7 +471,7 @@ void DrmOutput::updateEnablement(bool enable)
{
if (enable) {
m_dpmsModePending = DpmsMode::On;
if (m_backend->atomicModeSetting()) {
if (m_gpu->atomicModeSetting()) {
atomicEnable();
} else {
if (dpmsLegacyApply()) {
@ -477,7 +481,7 @@ void DrmOutput::updateEnablement(bool enable)
} else {
m_dpmsModePending = DpmsMode::Off;
if (m_backend->atomicModeSetting()) {
if (m_gpu->atomicModeSetting()) {
atomicDisable();
} else {
if (dpmsLegacyApply()) {
@ -563,7 +567,7 @@ void DrmOutput::updateDpms(KWaylandServer::OutputInterface::DpmsMode mode)
m_dpmsModePending = drmMode;
if (m_backend->atomicModeSetting()) {
if (m_gpu->atomicModeSetting()) {
m_modesetRequested = true;
if (drmMode == DpmsMode::On) {
if (m_atomicOffPending) {
@ -589,7 +593,7 @@ void DrmOutput::dpmsFinishOn()
waylandOutput()->setDpmsMode(toWaylandDpmsMode(DpmsMode::On));
m_backend->checkOutputsAreOn();
if (!m_backend->atomicModeSetting()) {
if (!m_gpu->atomicModeSetting()) {
m_crtc->blank();
}
if (Compositor *compositor = Compositor::self()) {
@ -611,7 +615,7 @@ void DrmOutput::dpmsFinishOff()
bool DrmOutput::dpmsLegacyApply()
{
if (drmModeConnectorSetProperty(m_backend->fd(), m_conn->id(),
if (drmModeConnectorSetProperty(m_gpu->fd(), m_conn->id(),
m_dpms->prop_id, uint64_t(m_dpmsModePending)) < 0) {
m_dpmsModePending = m_dpmsMode;
qCWarning(KWIN_DRM) << "Setting DPMS failed";
@ -693,7 +697,7 @@ void DrmOutput::updateTransform(Transform transform)
void DrmOutput::updateMode(int modeIndex)
{
// get all modes on the connector
DrmScopedPointer<drmModeConnector> connector(drmModeGetConnector(m_backend->fd(), m_conn->id()));
DrmScopedPointer<drmModeConnector> connector(drmModeGetConnector(m_gpu->fd(), m_conn->id()));
if (connector->count_modes <= modeIndex) {
// TODO: error?
return;
@ -716,7 +720,7 @@ void DrmOutput::setWaylandMode()
void DrmOutput::pageFlipped()
{
// In legacy mode we might get a page flip through a blank.
Q_ASSERT(m_pageFlipPending || !m_backend->atomicModeSetting());
Q_ASSERT(m_pageFlipPending || !m_gpu->atomicModeSetting());
m_pageFlipPending = false;
if (m_deleted) {
@ -730,7 +734,7 @@ void DrmOutput::pageFlipped()
// Egl based surface buffers get destroyed, QPainter based dumb buffers not
// TODO: split up DrmOutput in two for dumb and egl/gbm surface buffer compatible subclasses completely?
if (m_backend->deleteBufferAfterPageFlip()) {
if (m_backend->atomicModeSetting()) {
if (m_gpu->atomicModeSetting()) {
if (!m_primaryPlane->next()) {
// on manual vt switch
// TODO: when we later use overlay planes it might happen, that we have a page flip with only
@ -755,7 +759,7 @@ void DrmOutput::pageFlipped()
m_crtc->flipBuffer();
}
} else {
if (m_backend->atomicModeSetting()){
if (m_gpu->atomicModeSetting()){
for (DrmPlane *p : m_nextPlanesFlipList) {
p->flipBuffer();
}
@ -776,7 +780,7 @@ bool DrmOutput::present(DrmBuffer *buffer)
if (m_dpmsModePending != DpmsMode::On) {
return false;
}
if (m_backend->atomicModeSetting()) {
if (m_gpu->atomicModeSetting()) {
return presentAtomically(buffer);
} else {
return presentLegacy(buffer);
@ -826,7 +830,7 @@ bool DrmOutput::presentAtomically(DrmBuffer *buffer)
return true;
}
#endif
m_primaryPlane->setNext(buffer);
m_nextPlanesFlipList << m_primaryPlane;
@ -890,7 +894,7 @@ bool DrmOutput::presentLegacy(DrmBuffer *buffer)
return false;
}
}
const bool ok = drmModePageFlip(m_backend->fd(), m_crtc->id(), buffer->bufferId(), DRM_MODE_PAGE_FLIP_EVENT, this) == 0;
const bool ok = drmModePageFlip(m_gpu->fd(), m_crtc->id(), buffer->bufferId(), DRM_MODE_PAGE_FLIP_EVENT, this) == 0;
if (ok) {
m_crtc->setNext(buffer);
} else {
@ -902,7 +906,7 @@ bool DrmOutput::presentLegacy(DrmBuffer *buffer)
bool DrmOutput::setModeLegacy(DrmBuffer *buffer)
{
uint32_t connId = m_conn->id();
if (drmModeSetCrtc(m_backend->fd(), m_crtc->id(), buffer->bufferId(), 0, 0, &connId, 1, &m_mode) == 0) {
if (drmModeSetCrtc(m_gpu->fd(), m_crtc->id(), buffer->bufferId(), 0, 0, &connId, 1, &m_mode) == 0) {
return true;
} else {
qCWarning(KWIN_DRM) << "Mode setting failed";
@ -939,17 +943,16 @@ bool DrmOutput::doAtomicCommit(AtomicCommitMode mode)
};
if (!req) {
qCWarning(KWIN_DRM) << "DRM: couldn't allocate atomic request";
errorHandler();
return false;
qCWarning(KWIN_DRM) << "DRM: couldn't allocate atomic request";
errorHandler();
return false;
}
uint32_t flags = 0;
// Do we need to set a new mode?
if (m_modesetRequested) {
if (m_dpmsModePending == DpmsMode::On) {
if (drmModeCreatePropertyBlob(m_backend->fd(), &m_mode, sizeof(m_mode), &m_blobId) != 0) {
if (drmModeCreatePropertyBlob(m_gpu->fd(), &m_mode, sizeof(m_mode), &m_blobId) != 0) {
qCWarning(KWIN_DRM) << "Failed to create property blob";
errorHandler();
return false;
@ -994,8 +997,8 @@ bool DrmOutput::doAtomicCommit(AtomicCommitMode mode)
return false;
}
if (drmModeAtomicCommit(m_backend->fd(), req, flags, this)) {
qCWarning(KWIN_DRM) << "Atomic request failed to commit:" << strerror(errno);
if (drmModeAtomicCommit(m_gpu->fd(), req, flags, this)) {
qCDebug(KWIN_DRM) << "Atomic request failed to commit: " << strerror(errno);
errorHandler();
return false;
}
@ -1073,7 +1076,7 @@ bool DrmOutput::setGammaRamp(const GammaRamp &gamma)
}
QDebug& operator<<(QDebug& s, const KWin::DrmOutput* output)
QDebug& operator<<(QDebug& s, const KWin::DrmOutput *output)
{
if (!output)
return s.nospace() << "DrmOutput()";

15
plugins/platforms/drm/drm_output.h
View File

@ -31,6 +31,7 @@ class DrmPlane;
class DrmConnector;
class DrmCrtc;
class Cursor;
class DrmGpu;
class KWIN_EXPORT DrmOutput : public AbstractWaylandOutput
{
@ -45,7 +46,7 @@ public:
bool showCursor();
bool hideCursor();
void updateCursor();
void moveCursor(Cursor* cursor, const QPoint &globalPos);
void moveCursor(Cursor *cursor, const QPoint &globalPos);
bool init(drmModeConnector *connector);
bool present(DrmBuffer *buffer);
void pageFlipped();
@ -91,12 +92,17 @@ public:
* @return true if the hardware realizes the transform without further assistance
*/
bool hardwareTransforms() const;
DrmGpu *gpu() {
return m_gpu;
}
private:
friend class DrmGpu;
friend class DrmBackend;
friend class DrmCrtc; // TODO: For use of setModeLegacy. Remove later when we allow multiple connectors per crtc
// and save the connector ids in the DrmCrtc instance.
DrmOutput(DrmBackend *backend);
DrmOutput(DrmBackend *backend, DrmGpu* gpu);
bool presentAtomically(DrmBuffer *buffer);
@ -139,6 +145,7 @@ private:
QMatrix4x4 matrixDisplay(const QSize &s) const;
DrmBackend *m_backend;
DrmGpu *m_gpu;
DrmConnector *m_conn = nullptr;
DrmCrtc *m_crtc = nullptr;
bool m_lastGbm = false;
@ -150,8 +157,8 @@ private:
QByteArray m_uuid;
uint32_t m_blobId = 0;
DrmPlane* m_primaryPlane = nullptr;
DrmPlane* m_cursorPlane = nullptr;
DrmPlane *m_primaryPlane = nullptr;
DrmPlane *m_cursorPlane = nullptr;
QVector<DrmPlane*> m_nextPlanesFlipList;
bool m_pageFlipPending = false;
bool m_atomicOffPending = false;

18
plugins/platforms/drm/egl_gbm_backend.cpp
View File

@ -15,6 +15,7 @@
#include "logging.h"
#include "options.h"
#include "screens.h"
#include "drm_gpu.h"
// kwin libs
#include <kwinglplatform.h>
#include <kwineglimagetexture.h>
@ -24,15 +25,16 @@
namespace KWin
{
EglGbmBackend::EglGbmBackend(DrmBackend *drmBackend)
EglGbmBackend::EglGbmBackend(DrmBackend *drmBackend, DrmGpu *gpu)
: AbstractEglBackend()
, m_backend(drmBackend)
, m_gpu(gpu)
{
// Egl is always direct rendering.
setIsDirectRendering(true);
setSyncsToVBlank(true);
connect(m_backend, &DrmBackend::outputAdded, this, &EglGbmBackend::createOutput);
connect(m_backend, &DrmBackend::outputRemoved, this, &EglGbmBackend::removeOutput);
connect(m_gpu, &DrmGpu::outputEnabled, this, &EglGbmBackend::createOutput);
connect(m_gpu, &DrmGpu::outputDisabled, this, &EglGbmBackend::removeOutput);
}
EglGbmBackend::~EglGbmBackend()
@ -72,7 +74,7 @@ void EglGbmBackend::cleanupOutput(Output &output)
bool EglGbmBackend::initializeEgl()
{
initClientExtensions();
EGLDisplay display = m_backend->sceneEglDisplay();
EGLDisplay display = eglDisplay();
// Use eglGetPlatformDisplayEXT() to get the display pointer
// if the implementation supports it.
@ -88,12 +90,12 @@ bool EglGbmBackend::initializeEgl()
return false;
}
auto device = gbm_create_device(m_backend->fd());
auto device = gbm_create_device(m_gpu->fd());
if (!device) {
setFailed("Could not create gbm device");
return false;
}
m_backend->setGbmDevice(device);
m_gpu->setGbmDevice(device);
display = eglGetPlatformDisplayEXT(platform, device, nullptr);
}
@ -147,7 +149,7 @@ bool EglGbmBackend::initRenderingContext()
std::shared_ptr<GbmSurface> EglGbmBackend::createGbmSurface(const QSize &size) const
{
auto gbmSurface = std::make_shared<GbmSurface>(m_backend->gbmDevice(),
auto gbmSurface = std::make_shared<GbmSurface>(m_gpu->gbmDevice(),
size.width(), size.height(),
GBM_FORMAT_XRGB8888,
GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
@ -460,7 +462,7 @@ void EglGbmBackend::presentOnOutput(Output &output, const QRegion &damagedRegion
} else {
eglSwapBuffers(eglDisplay(), output.eglSurface);
}
output.buffer = m_backend->createBuffer(output.gbmSurface);
output.buffer = new DrmSurfaceBuffer(m_gpu->fd(), output.gbmSurface);
Q_EMIT output.output->outputChange(damagedRegion);
m_backend->present(output.buffer, output.output);

4
plugins/platforms/drm/egl_gbm_backend.h
View File

@ -22,6 +22,7 @@ class DrmBuffer;
class DrmSurfaceBuffer;
class DrmOutput;
class GbmSurface;
class DrmGpu;
/**
* @brief OpenGL Backend using Egl on a GBM surface.
@ -30,7 +31,7 @@ class EglGbmBackend : public AbstractEglBackend
{
Q_OBJECT
public:
EglGbmBackend(DrmBackend *drmBackend);
EglGbmBackend(DrmBackend *drmBackend, DrmGpu *gpu);
~EglGbmBackend() override;
void screenGeometryChanged(const QSize &size) override;
SceneOpenGLTexturePrivate *createBackendTexture(SceneOpenGLTexture *texture) override;
@ -93,6 +94,7 @@ private:
void cleanupFramebuffer(Output &output);
DrmBackend *m_backend;
DrmGpu *m_gpu;
QVector<Output> m_outputs;
friend class EglGbmTexture;
};

19
plugins/platforms/drm/egl_stream_backend.cpp
View File

@ -26,6 +26,7 @@
#include <KWaylandServer/display.h>
#include <KWaylandServer/resource.h>
#include <wayland-server-core.h>
#include "drm_gpu.h"
namespace KWin
{
@ -71,13 +72,13 @@ PFNEGLQUERYWAYLANDBUFFERWL pEglQueryWaylandBufferWL = nullptr;
#define EGL_WAYLAND_Y_INVERTED_WL 0x31DB
#endif
EglStreamBackend::EglStreamBackend(DrmBackend *b)
: AbstractEglBackend(), m_backend(b)
EglStreamBackend::EglStreamBackend(DrmBackend *b, DrmGpu *gpu)
: AbstractEglBackend(), m_backend(b), m_gpu(gpu)
{
setIsDirectRendering(true);
setSyncsToVBlank(true);
connect(m_backend, &DrmBackend::outputAdded, this, &EglStreamBackend::createOutput);
connect(m_backend, &DrmBackend::outputRemoved, this,
connect(m_gpu, &DrmGpu::outputEnabled, this, &EglStreamBackend::createOutput);
connect(m_gpu, &DrmGpu::outputDisabled, this,
[this] (DrmOutput *output) {
auto it = std::find_if(m_outputs.begin(), m_outputs.end(),
[output] (const Output &o) {
@ -120,7 +121,7 @@ void EglStreamBackend::cleanupOutput(const Output &o)
bool EglStreamBackend::initializeEgl()
{
initClientExtensions();
EGLDisplay display = m_backend->sceneEglDisplay();
EGLDisplay display = eglDisplay();
if (display == EGL_NO_DISPLAY) {
if (!hasClientExtension(QByteArrayLiteral("EGL_EXT_device_base")) &&
!(hasClientExtension(QByteArrayLiteral("EGL_EXT_device_query")) &&
@ -138,7 +139,7 @@ bool EglStreamBackend::initializeEgl()
eglQueryDevicesEXT(numDevices, devices.data(), &numDevices);
for (EGLDeviceEXT device : devices) {
const char *drmDeviceFile = eglQueryDeviceStringEXT(device, EGL_DRM_DEVICE_FILE_EXT);
if (m_backend->devNode() != drmDeviceFile) {
if (m_gpu->devNode().compare(drmDeviceFile)) {
continue;
}
@ -150,7 +151,7 @@ bool EglStreamBackend::initializeEgl()
}
EGLint platformAttribs[] = {
EGL_DRM_MASTER_FD_EXT, m_backend->fd(),
EGL_DRM_MASTER_FD_EXT, m_gpu->fd(),
EGL_NONE
};
display = eglGetPlatformDisplayEXT(EGL_PLATFORM_DEVICE_EXT, device, platformAttribs);
@ -254,7 +255,7 @@ void EglStreamBackend::attachStreamConsumer(KWaylandServer::SurfaceInterface *su
void EglStreamBackend::init()
{
if (!m_backend->atomicModeSetting()) {
if (!m_gpu->atomicModeSetting()) {
setFailed("EGLStream backend requires atomic modesetting");
return;
}
@ -307,7 +308,7 @@ bool EglStreamBackend::resetOutput(Output &o, DrmOutput *drmOutput)
delete o.buffer;
}
// dumb buffer used for modesetting
o.buffer = m_backend->createBuffer(drmOutput->pixelSize());
o.buffer = m_gpu->createBuffer(drmOutput->pixelSize());
EGLAttrib streamAttribs[] = {
EGL_STREAM_FIFO_LENGTH_KHR, 0, // mailbox mode

4
plugins/platforms/drm/egl_stream_backend.h
View File

@ -19,6 +19,7 @@ namespace KWin
class DrmBackend;
class DrmOutput;
class DrmBuffer;
class DrmGpu;
/**
* @brief OpenGL Backend using Egl with an EGLDevice.
@ -27,7 +28,7 @@ class EglStreamBackend : public AbstractEglBackend
{
Q_OBJECT
public:
EglStreamBackend(DrmBackend *b);
EglStreamBackend(DrmBackend *b, DrmGpu *gpu);
~EglStreamBackend() override;
void screenGeometryChanged(const QSize &size) override;
SceneOpenGLTexturePrivate *createBackendTexture(SceneOpenGLTexture *texture) override;
@ -70,6 +71,7 @@ private:
void createOutput(DrmOutput *output);
DrmBackend *m_backend;
DrmGpu *m_gpu;
QVector<Output> m_outputs;
KWaylandServer::EglStreamControllerInterface *m_eglStreamControllerInterface;
QHash<KWaylandServer::SurfaceInterface *, StreamTexture> m_streamTextures;

12
plugins/platforms/drm/scene_qpainter_drm_backend.cpp
View File

@ -10,21 +10,23 @@
#include "drm_backend.h"
#include "drm_output.h"
#include "logind.h"
#include "drm_gpu.h"
namespace KWin
{
DrmQPainterBackend::DrmQPainterBackend(DrmBackend *backend)
DrmQPainterBackend::DrmQPainterBackend(DrmBackend *backend, DrmGpu *gpu)
: QObject()
, QPainterBackend()
, m_backend(backend)
, m_gpu(gpu)
{
const auto outputs = m_backend->drmOutputs();
for (auto output: outputs) {
initOutput(output);
}
connect(m_backend, &DrmBackend::outputAdded, this, &DrmQPainterBackend::initOutput);
connect(m_backend, &DrmBackend::outputRemoved, this,
connect(m_gpu, &DrmGpu::outputAdded, this, &DrmQPainterBackend::initOutput);
connect(m_gpu, &DrmGpu::outputDisabled, this,
[this] (DrmOutput *o) {
auto it = std::find_if(m_outputs.begin(), m_outputs.end(),
[o] (const Output &output) {
@ -53,7 +55,7 @@ void DrmQPainterBackend::initOutput(DrmOutput *output)
{
Output o;
auto initBuffer = [&o, output, this] (int index) {
o.buffer[index] = m_backend->createBuffer(output->pixelSize());
o.buffer[index] = m_gpu->createBuffer(output->pixelSize());
if (o.buffer[index]->map()) {
o.buffer[index]->image()->fill(Qt::black);
}
@ -71,7 +73,7 @@ void DrmQPainterBackend::initOutput(DrmOutput *output)
delete (*it).buffer[0];
delete (*it).buffer[1];
auto initBuffer = [it, output, this] (int index) {
it->buffer[index] = m_backend->createBuffer(output->pixelSize());
it->buffer[index] = m_gpu->createBuffer(output->pixelSize());
if (it->buffer[index]->map()) {
it->buffer[index]->image()->fill(Qt::black);
}

4
plugins/platforms/drm/scene_qpainter_drm_backend.h
View File

@ -18,12 +18,13 @@ namespace KWin
class DrmBackend;
class DrmDumbBuffer;
class DrmOutput;
class DrmGpu;
class DrmQPainterBackend : public QObject, public QPainterBackend
{
Q_OBJECT
public:
DrmQPainterBackend(DrmBackend *backend);
DrmQPainterBackend(DrmBackend *backend, DrmGpu *gpu);
~DrmQPainterBackend() override;
QImage *buffer() override;
@ -43,6 +44,7 @@ private:
};
QVector<Output> m_outputs;
DrmBackend *m_backend;
DrmGpu *m_gpu;
};
}

2
plugins/platforms/fbdev/fb_backend.cpp
View File

@ -90,7 +90,7 @@ void FramebufferBackend::openFrameBuffer()
VirtualTerminal::self()->init();
QString framebufferDevice = deviceIdentifier().constData();
if (framebufferDevice.isEmpty()) {
framebufferDevice = QString(Udev().primaryFramebuffer()->devNode());
framebufferDevice = QString(Udev().listFramebuffers().at(0)->devNode());
}
int fd = LogindIntegration::self()->takeDevice(framebufferDevice.toUtf8().constData());
qCDebug(KWIN_FB) << "Using frame buffer device:" << framebufferDevice;

79
udev.cpp
View File

@ -42,7 +42,7 @@ public:
};
void addMatch(Match match, const char *name);
void scan();
UdevDevice::Ptr find(std::function<bool(const UdevDevice::Ptr &)> test);
std::vector<UdevDevice::Ptr> find();
private:
Udev *m_udev;
@ -91,14 +91,15 @@ void UdevEnumerate::scan()
udev_enumerate_scan_devices(m_enumerate.data());
}
UdevDevice::Ptr UdevEnumerate::find(std::function<bool(const UdevDevice::Ptr &device)> test)
std::vector<UdevDevice::Ptr> UdevEnumerate::find()
{
std::vector<UdevDevice::Ptr> vect;
if (m_enumerate.isNull()) {
return UdevDevice::Ptr();
vect.push_back( UdevDevice::Ptr() );
return vect;
}
QString defaultSeat = QStringLiteral("seat0");
udev_list_entry *it = udev_enumerate_get_list_entry(m_enumerate.data());
UdevDevice::Ptr firstFound;
while (it) {
auto current = it;
it = udev_list_entry_get_next(it);
@ -113,62 +114,76 @@ UdevDevice::Ptr UdevEnumerate::find(std::function<bool(const UdevDevice::Ptr &de
if (deviceSeat != LogindIntegration::self()->seat()) {
continue;
}
if (test(device)) {
return device;
}
if (!firstFound) {
firstFound.swap(device);
}
if (device->getParentWithSubsystemDevType("pci"))
vect.push_back(std::move(device));
}
return firstFound;
return vect;
}
UdevDevice::Ptr Udev::primaryGpu()
std::vector<UdevDevice::Ptr> Udev::listGPUs()
{
if (!m_udev) {
return UdevDevice::Ptr();
std::vector<UdevDevice::Ptr> vect;
vect.push_back(UdevDevice::Ptr());
return vect;
}
#if defined(Q_OS_FREEBSD)
return deviceFromSyspath("/dev/dri/card0");
std::vector<UdevDevice::Ptr> r;
r.push_back(deviceFromSyspath("/dev/dri/card0"));
return r;
#else
UdevEnumerate enumerate(this);
enumerate.addMatch(UdevEnumerate::Match::SubSystem, "drm");
enumerate.addMatch(UdevEnumerate::Match::SysName, "card[0-9]*");
enumerate.addMatch(UdevEnumerate::Match::SysName, "card[0-9]");
enumerate.scan();
return enumerate.find([](const UdevDevice::Ptr &device) {
auto pci = device->getParentWithSubsystemDevType("pci");
if (!pci) {
return false;
}
const char *systAttrValue = udev_device_get_sysattr_value(pci, "boot_vga");
auto vect = enumerate.find();
std::sort(vect.begin(), vect.end(), [](const UdevDevice::Ptr &device1, const UdevDevice::Ptr &device2) {
auto pci1 = device1->getParentWithSubsystemDevType("pci");
auto pci2 = device2->getParentWithSubsystemDevType("pci");
// if set as boot GPU, prefer 1
const char *systAttrValue = udev_device_get_sysattr_value(pci1, "boot_vga");
if (systAttrValue && qstrcmp(systAttrValue, "1") == 0) {
return true;
}
return false;
// if set as boot GPU, prefer 2
systAttrValue = udev_device_get_sysattr_value(pci2, "boot_vga");
if (systAttrValue && qstrcmp(systAttrValue, "1") == 0) {
return false;
}
return udev_device_get_sysnum(pci1) > udev_device_get_sysnum(pci2);
});
return vect;
#endif
}
UdevDevice::Ptr Udev::primaryFramebuffer()
std::vector<UdevDevice::Ptr> Udev::listFramebuffers()
{
if (!m_udev) {
return UdevDevice::Ptr();
std::vector<UdevDevice::Ptr> vect;
vect.push_back(UdevDevice::Ptr());
return vect;
}
UdevEnumerate enumerate(this);
enumerate.addMatch(UdevEnumerate::Match::SubSystem, "graphics");
enumerate.addMatch(UdevEnumerate::Match::SysName, "fb[0-9]*");
enumerate.addMatch(UdevEnumerate::Match::SysName, "fb[0-9]");
enumerate.scan();
return enumerate.find([](const UdevDevice::Ptr &device) {
auto pci = device->getParentWithSubsystemDevType("pci");
if (!pci) {
return false;
}
const char *systAttrValue = udev_device_get_sysattr_value(pci, "boot_vga");
auto vect = enumerate.find();
std::sort(vect.begin(), vect.end(), [](const UdevDevice::Ptr &device1, const UdevDevice::Ptr &device2) {
auto pci1 = device1->getParentWithSubsystemDevType("pci");
auto pci2 = device2->getParentWithSubsystemDevType("pci");
// if set as boot GPU, prefer 1
const char *systAttrValue = udev_device_get_sysattr_value(pci1, "boot_vga");
if (systAttrValue && qstrcmp(systAttrValue, "1") == 0) {
return true;
}
return false;
// if set as boot GPU, prefer 2
systAttrValue = udev_device_get_sysattr_value(pci2, "boot_vga");
if (systAttrValue && qstrcmp(systAttrValue, "1") == 0) {
return false;
}
return udev_device_get_sysnum(pci1) > udev_device_get_sysnum(pci2);
});
return vect;
}
UdevDevice::Ptr Udev::deviceFromSyspath(const char *syspath)

7
udev.h
View File

@ -11,6 +11,9 @@
#include <memory>
#include <kwin_export.h>
#include <vector>
#include <QVector>
struct udev;
struct udev_device;
struct udev_monitor;
@ -70,8 +73,8 @@ public:
bool isValid() const {
return m_udev != nullptr;
}
UdevDevice::Ptr primaryGpu();
UdevDevice::Ptr primaryFramebuffer();
std::vector<UdevDevice::Ptr> listGPUs();
std::vector<UdevDevice::Ptr> listFramebuffers();
UdevDevice::Ptr deviceFromSyspath(const char *syspath);
UdevMonitor *monitor();
operator udev*() const {