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// SPDX-FileCopyrightText: 2021 yuzu emulator team and Skyline Team and Contributors
// (https://github.com/skyline-emu/)
// SPDX-License-Identifier: GPL-3.0-or-later Licensed under GPLv3
// or any later version Refer to the license.txt file included.
#pragma once
#include <memory>
#include <string>
#include <unordered_map>
#include <vector>
#include "common/common_types.h"
#include "core/hle/service/kernel_helpers.h"
#include "core/hle/service/nvdrv/nvdata.h"
#include "core/hle/service/nvdrv/syncpoint_manager.h"
#include "core/hle/service/nvflinger/ui/fence.h"
#include "core/hle/service/service.h"
namespace Core {
class System;
}
namespace Kernel {
class KEvent;
}
namespace Service::NVFlinger {
class NVFlinger;
}
namespace Service::Nvidia {
class SyncpointManager;
namespace Devices {
class nvdevice;
}
class Module;
class EventInterface {
public:
EventInterface(Module& module_) : module{module_} {}
// Mask representing registered events
u64 events_mask{};
// Each kernel event associated to an NV event
std::array<Kernel::KEvent*, MaxNvEvents> events{};
// Backup NV event
std::array<Kernel::KEvent*, MaxNvEvents> backup{};
// The status of the current NVEvent
std::array<std::atomic<EventState>, MaxNvEvents> status{};
// Tells if an NVEvent is registered or not
std::array<bool, MaxNvEvents> registered{};
// Tells the NVEvent that it has failed.
std::array<u32, MaxNvEvents> fails{};
// When an NVEvent is waiting on GPU interrupt, this is the sync_point
// associated with it.
std::array<u32, MaxNvEvents> assigned_syncpt{};
// This is the value of the GPU interrupt for which the NVEvent is waiting
// for.
std::array<u32, MaxNvEvents> assigned_value{};
// Constant to denote an unasigned syncpoint.
static constexpr u32 unassigned_syncpt = 0xFFFFFFFF;
bool IsBeingUsed(u32 event_id) {
const auto current_status = status[event_id].load(std::memory_order_acquire);
return current_status == EventState::Waiting || current_status == EventState::Cancelling ||
current_status == EventState::Signalling;
}
std::unique_lock<std::mutex> Lock();
void Signal(u32 event_id);
void Create(u32 event_id);
void Free(u32 event_id);
u32 FindFreeEvent(u32 syncpoint_id);
Kernel::KEvent* CreateNonCtrlEvent(std::string name);
private:
std::mutex events_mutex;
Module& module;
std::vector<Kernel::KEvent*> basic_events;
};
class Module final {
public:
explicit Module(Core::System& system_);
~Module();
/// Returns a pointer to one of the available devices, identified by its name.
template <typename T>
std::shared_ptr<T> GetDevice(const std::string& name) {
auto itr = devices.find(name);
if (itr == devices.end())
return nullptr;
return std::static_pointer_cast<T>(itr->second);
}
NvResult VerifyFD(DeviceFD fd) const;
/// Opens a device node and returns a file descriptor to it.
DeviceFD Open(const std::string& device_name);
/// Sends an ioctl command to the specified file descriptor.
NvResult Ioctl1(DeviceFD fd, Ioctl command, const std::vector<u8>& input,
std::vector<u8>& output);
NvResult Ioctl2(DeviceFD fd, Ioctl command, const std::vector<u8>& input,
const std::vector<u8>& inline_input, std::vector<u8>& output);
NvResult Ioctl3(DeviceFD fd, Ioctl command, const std::vector<u8>& input,
std::vector<u8>& output, std::vector<u8>& inline_output);
/// Closes a device file descriptor and returns operation success.
NvResult Close(DeviceFD fd);
void SignalSyncpt(const u32 syncpoint_id, const u32 value);
NvResult QueryEvent(DeviceFD fd, u32 event_id, Kernel::KEvent*& event);
private:
friend class EventInterface;
/// Manages syncpoints on the host
SyncpointManager syncpoint_manager;
/// Id to use for the next open file descriptor.
DeviceFD next_fd = 1;
/// Mapping of file descriptors to the devices they reference.
std::unordered_map<DeviceFD, std::shared_ptr<Devices::nvdevice>> open_files;
/// Mapping of device node names to their implementation.
std::unordered_map<std::string, std::shared_ptr<Devices::nvdevice>> devices;
EventInterface events_interface;
KernelHelpers::ServiceContext service_context;
void CreateEvent(u32 event_id);
void FreeEvent(u32 event_id);
};
/// Registers all NVDRV services with the specified service manager.
void InstallInterfaces(SM::ServiceManager& service_manager, NVFlinger::NVFlinger& nvflinger,
Core::System& system);
} // namespace Service::Nvidia
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