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/*
* Copyright (C) 2024 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "DRMDeviceManager.h"
#include <wtf/text/WTFString.h>
#if USE(LIBDRM)
#include "DRMDeviceNode.h"
#include <xf86drm.h>
namespace WebCore {
DRMDeviceManager& DRMDeviceManager::singleton()
{
static std::unique_ptr<DRMDeviceManager> s_manager;
static std::once_flag s_onceFlag;
std::call_once(s_onceFlag, [] {
s_manager = makeUnique<DRMDeviceManager>();
});
return *s_manager;
}
DRMDeviceManager::~DRMDeviceManager() = default;
static void drmForeachDevice(Function<bool(drmDevice*)>&& functor)
{
std::array<drmDevicePtr, 64> devices = { };
int numDevices = drmGetDevices2(0, devices.data(), std::size(devices));
if (numDevices <= 0)
return;
for (int i = 0; i < numDevices; ++i) {
if (!functor(devices[i]))
break;
}
drmFreeDevices(devices.data(), numDevices);
}
void DRMDeviceManager::initializeMainDevice(const String& deviceFile)
{
RELEASE_ASSERT(isMainThread());
RELEASE_ASSERT(!m_mainDevice.isInitialized);
m_mainDevice.isInitialized = true;
if (deviceFile.isEmpty())
return;
drmForeachDevice([&](drmDevice* device) {
const auto nodes = unsafeMakeSpan(device->nodes, DRM_NODE_MAX);
for (int i = 0; i < DRM_NODE_MAX; ++i) {
if (!(device->available_nodes & (1 << i)))
continue;
if (String::fromUTF8(nodes[i]) == deviceFile) {
RELEASE_ASSERT(device->available_nodes & (1 << DRM_NODE_PRIMARY));
if (device->available_nodes & (1 << DRM_NODE_RENDER)) {
m_mainDevice.primaryNode = DRMDeviceNode::create(CString { nodes[DRM_NODE_PRIMARY] });
m_mainDevice.renderNode = DRMDeviceNode::create(CString { nodes[DRM_NODE_RENDER] });
} else
m_mainDevice.primaryNode = DRMDeviceNode::create(CString { nodes[DRM_NODE_PRIMARY] });
return false;
}
}
return true;
});
if (!m_mainDevice.primaryNode)
WTFLogAlways("Failed to find DRM device for %s", deviceFile.utf8().data());
}
RefPtr<DRMDeviceNode> DRMDeviceManager::mainDeviceNode(DRMDeviceManager::NodeType nodeType) const
{
RELEASE_ASSERT(m_mainDevice.isInitialized);
if (nodeType == NodeType::Render)
return m_mainDevice.renderNode ? m_mainDevice.renderNode : m_mainDevice.primaryNode;
return m_mainDevice.primaryNode ? m_mainDevice.primaryNode : m_mainDevice.renderNode;
}
#if USE(GBM)
struct gbm_device* DRMDeviceManager::mainGBMDeviceNode(NodeType nodeType) const
{
auto node = mainDeviceNode(nodeType);
return node ? node->gbmDevice() : nullptr;
}
#endif
RefPtr<DRMDeviceNode> DRMDeviceManager::deviceNode(const CString& filename)
{
RELEASE_ASSERT(isMainThread());
RELEASE_ASSERT(m_mainDevice.isInitialized);
if (filename.isNull())
return nullptr;
auto node = [&] -> RefPtr<DRMDeviceNode> {
if (m_mainDevice.primaryNode && m_mainDevice.primaryNode->filename() == filename)
return m_mainDevice.primaryNode;
if (m_mainDevice.renderNode && m_mainDevice.renderNode->filename() == filename)
return m_mainDevice.renderNode;
return DRMDeviceNode::create(CString { filename.data() });
}();
#if USE(GBM)
// Make sure GBMDevice is created in the main thread.
if (node)
node->gbmDevice();
#endif
return node;
}
} // namespace WebCore
#endif // USE(LIBDRM)
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