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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstdlib>
#include <cstring>
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/core.h"
#include "core/hle/kernel/readable_event.h"
#include "core/hle/kernel/writable_event.h"
#include "core/hle/service/nvdrv/devices/nvhost_ctrl.h"
#include "video_core/gpu.h"
namespace Service::Nvidia::Devices {
nvhost_ctrl::nvhost_ctrl(EventsInterface& events_interface) : events_interface{events_interface} {}
nvhost_ctrl::~nvhost_ctrl() = default;
u32 nvhost_ctrl::ioctl(Ioctl command, const std::vector<u8>& input, std::vector<u8>& output) {
LOG_DEBUG(Service_NVDRV, "called, command=0x{:08X}, input_size=0x{:X}, output_size=0x{:X}",
command.raw, input.size(), output.size());
switch (static_cast<IoctlCommand>(command.raw)) {
case IoctlCommand::IocGetConfigCommand:
return NvOsGetConfigU32(input, output);
case IoctlCommand::IocCtrlEventWaitCommand:
return IocCtrlEventWait(input, output, false);
case IoctlCommand::IocCtrlEventWaitAsyncCommand:
return IocCtrlEventWait(input, output, true);
case IoctlCommand::IocCtrlEventRegisterCommand:
return IocCtrlEventRegister(input, output);
case IoctlCommand::IocCtrlEventUnregisterCommand:
return IocCtrlEventUnregister(input, output);
case IoctlCommand::IocCtrlEventSignalCommand:
return IocCtrlEventSignal(input, output);
}
UNIMPLEMENTED_MSG("Unimplemented ioctl");
return 0;
}
u32 nvhost_ctrl::NvOsGetConfigU32(const std::vector<u8>& input, std::vector<u8>& output) {
IocGetConfigParams params{};
std::memcpy(¶ms, input.data(), sizeof(params));
LOG_TRACE(Service_NVDRV, "called, setting={}!{}", params.domain_str.data(),
params.param_str.data());
return 0x30006; // Returns error on production mode
}
u32 nvhost_ctrl::IocCtrlEventWait(const std::vector<u8>& input, std::vector<u8>& output,
bool is_async) {
IocCtrlEventWaitParams params{};
std::memcpy(¶ms, input.data(), sizeof(params));
LOG_DEBUG(Service_NVDRV, "syncpt_id={}, threshold={}, timeout={}, is_async={}",
params.syncpt_id, params.threshold, params.timeout, is_async);
if (params.syncpt_id >= MaxSyncPoints) {
return NvResult::BadParameter;
}
auto& gpu = Core::System::GetInstance().GPU();
// This is mostly to take into account unimplemented features. As synced
// gpu is always synced.
if (!gpu.IsAsync()) {
return NvResult::Success;
}
gpu.Guard(true);
u32 current_syncpoint_value = gpu.GetSyncpointValue(params.syncpt_id);
if (current_syncpoint_value >= params.threshold) {
params.value = current_syncpoint_value;
std::memcpy(output.data(), ¶ms, sizeof(params));
gpu.Guard(false);
return NvResult::Success;
}
if (!is_async) {
params.value = 0;
}
if (params.timeout == 0) {
std::memcpy(output.data(), ¶ms, sizeof(params));
gpu.Guard(false);
return NvResult::Timeout;
}
u32 event_id;
if (is_async) {
event_id = params.value & 0x00FF;
if (event_id >= 64) {
std::memcpy(output.data(), ¶ms, sizeof(params));
gpu.Guard(false);
return NvResult::BadParameter;
}
} else {
event_id = events_interface.GetFreeEvent();
}
EventState status = events_interface.status[event_id];
if (event_id < MaxNvEvents || status == EventState::Free || status == EventState::Registered) {
events_interface.SetEventStatus(event_id, EventState::Waiting);
events_interface.assigned_syncpt[event_id] = params.syncpt_id;
events_interface.assigned_value[event_id] = params.threshold;
if (is_async) {
params.value = params.syncpt_id << 4;
} else {
params.value = ((params.syncpt_id & 0xfff) << 16) | 0x10000000;
}
params.value |= event_id;
events_interface.events[event_id].writable->Clear();
gpu.RegisterEvent(event_id, params.syncpt_id, params.threshold);
std::memcpy(output.data(), ¶ms, sizeof(params));
gpu.Guard(false);
return NvResult::Timeout;
}
std::memcpy(output.data(), ¶ms, sizeof(params));
gpu.Guard(false);
return NvResult::BadParameter;
}
u32 nvhost_ctrl::IocCtrlEventRegister(const std::vector<u8>& input, std::vector<u8>& output) {
IocCtrlEventRegisterParams params{};
std::memcpy(¶ms, input.data(), sizeof(params));
const u32 event_id = params.user_event_id & 0x00FF;
if (event_id >= MaxNvEvents) {
return NvResult::BadParameter;
}
if (events_interface.registered[event_id]) {
return NvResult::BadParameter;
}
events_interface.RegisterEvent(event_id);
events_interface.events[event_id].writable->Signal();
return NvResult::Success;
}
u32 nvhost_ctrl::IocCtrlEventUnregister(const std::vector<u8>& input, std::vector<u8>& output) {
IocCtrlEventUnregisterParams params{};
std::memcpy(¶ms, input.data(), sizeof(params));
const u32 event_id = params.user_event_id & 0x00FF;
if (event_id >= MaxNvEvents) {
return NvResult::BadParameter;
}
if (!events_interface.registered[event_id]) {
return NvResult::BadParameter;
}
events_interface.UnregisterEvent(event_id);
return NvResult::Success;
}
u32 nvhost_ctrl::IocCtrlEventSignal(const std::vector<u8>& input, std::vector<u8>& output) {
IocCtrlEventSignalParams params{};
std::memcpy(¶ms, input.data(), sizeof(params));
// TODO(Blinkhawk): This is normally called when an NvEvents timeout on WaitSynchronization
// It is believed from RE to cancel the GPU Event. However, better research is required
u32 event_id = params.user_event_id & 0x00FF;
LOG_WARNING(Service_NVDRV, "(STUBBED) called, user_event_id: {:X}", event_id);
if (event_id >= MaxNvEvents) {
return NvResult::BadParameter;
}
if (events_interface.status[event_id] == EventState::Waiting) {
auto& gpu = Core::System::GetInstance().GPU();
gpu.CancelEvent(event_id, events_interface.assigned_syncpt[event_id],
events_interface.assigned_value[event_id]);
events_interface.LiberateEvent(event_id);
}
return NvResult::Success;
}
} // namespace Service::Nvidia::Devices
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