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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.
#include <cstdlib>
#include <cstring>
#include "common/assert.h"
#include "common/logging/log.h"
#include "common/scope_exit.h"
#include "core/core.h"
#include "core/hle/kernel/k_event.h"
#include "core/hle/kernel/k_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(Core::System& system_, EventInterface& events_interface_,
SyncpointManager& syncpoint_manager_)
: nvdevice{system_}, events_interface{events_interface_}, syncpoint_manager{
syncpoint_manager_} {}
nvhost_ctrl::~nvhost_ctrl() = default;
NvResult nvhost_ctrl::Ioctl1(DeviceFD fd, Ioctl command, const std::vector<u8>& input,
std::vector<u8>& output) {
switch (command.group) {
case 0x0:
switch (command.cmd) {
case 0x1b:
return NvOsGetConfigU32(input, output);
case 0x1c:
return IocCtrlClearEventWait(input, output);
case 0x1d:
return IocCtrlEventWait(input, output, true);
case 0x1e:
return IocCtrlEventWait(input, output, false);
case 0x1f:
return IocCtrlEventRegister(input, output);
case 0x20:
return IocCtrlEventUnregister(input, output);
}
break;
default:
break;
}
UNIMPLEMENTED_MSG("Unimplemented ioctl={:08X}", command.raw);
return NvResult::NotImplemented;
}
NvResult nvhost_ctrl::Ioctl2(DeviceFD fd, Ioctl command, const std::vector<u8>& input,
const std::vector<u8>& inline_input, std::vector<u8>& output) {
UNIMPLEMENTED_MSG("Unimplemented ioctl={:08X}", command.raw);
return NvResult::NotImplemented;
}
NvResult nvhost_ctrl::Ioctl3(DeviceFD fd, Ioctl command, const std::vector<u8>& input,
std::vector<u8>& output, std::vector<u8>& inline_outpu) {
UNIMPLEMENTED_MSG("Unimplemented ioctl={:08X}", command.raw);
return NvResult::NotImplemented;
}
void nvhost_ctrl::OnOpen(DeviceFD fd) {}
void nvhost_ctrl::OnClose(DeviceFD fd) {}
NvResult 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 NvResult::ConfigVarNotFound; // Returns error on production mode
}
NvResult nvhost_ctrl::IocCtrlEventWait(const std::vector<u8>& input, std::vector<u8>& output,
bool is_allocation) {
IocCtrlEventWaitParams params{};
std::memcpy(¶ms, input.data(), sizeof(params));
LOG_DEBUG(Service_NVDRV, "syncpt_id={}, threshold={}, timeout={}, is_allocation={}",
params.fence.id, params.fence.value, params.timeout, is_allocation);
bool must_unmark_fail = !is_allocation;
const u32 event_id = params.value.raw;
SCOPE_EXIT({
std::memcpy(output.data(), ¶ms, sizeof(params));
if (must_unmark_fail) {
events_interface.fails[event_id] = 0;
}
});
const u32 fence_id = static_cast<u32>(params.fence.id);
if (fence_id >= MaxSyncPoints) {
return NvResult::BadParameter;
}
if (params.fence.value == 0) {
params.value.raw = syncpoint_manager.GetSyncpointMin(fence_id);
return NvResult::Success;
}
if (syncpoint_manager.IsSyncpointExpired(fence_id, params.fence.value)) {
params.value.raw = syncpoint_manager.GetSyncpointMin(fence_id);
return NvResult::Success;
}
if (const auto new_value = syncpoint_manager.RefreshSyncpoint(fence_id);
syncpoint_manager.IsSyncpointExpired(fence_id, params.fence.value)) {
params.value.raw = new_value;
return NvResult::Success;
}
auto& gpu = system.GPU();
const u32 target_value = params.fence.value;
auto lock = events_interface.Lock();
u32 slot = [&]() {
if (is_allocation) {
params.value.raw = 0;
return events_interface.FindFreeEvent(fence_id);
} else {
return params.value.raw;
}
}();
const auto check_failing = [&]() {
if (events_interface.fails[slot] > 1) {
{
auto lk = system.StallProcesses();
gpu.WaitFence(fence_id, target_value);
system.UnstallProcesses();
}
params.value.raw = target_value;
return true;
}
return false;
};
if (params.timeout == 0) {
if (check_failing()) {
return NvResult::Success;
}
return NvResult::Timeout;
}
if (slot >= MaxNvEvents) {
return NvResult::BadParameter;
}
auto* event = events_interface.events[slot];
if (!event) {
return NvResult::BadParameter;
}
if (events_interface.IsBeingUsed(slot)) {
return NvResult::BadParameter;
}
if (check_failing()) {
return NvResult::Success;
}
params.value.raw = 0;
events_interface.status[slot].store(EventState::Waiting, std::memory_order_release);
events_interface.assigned_syncpt[slot] = fence_id;
events_interface.assigned_value[slot] = target_value;
if (is_allocation) {
params.value.syncpoint_id_for_allocation.Assign(static_cast<u16>(fence_id));
params.value.event_allocated.Assign(1);
} else {
params.value.syncpoint_id.Assign(fence_id);
}
params.value.raw |= slot;
gpu.RegisterSyncptInterrupt(fence_id, target_value);
return NvResult::Timeout;
}
NvResult nvhost_ctrl::FreeEvent(u32 slot) {
if (slot >= MaxNvEvents) {
return NvResult::BadParameter;
}
if (!events_interface.registered[slot]) {
return NvResult::Success;
}
if (events_interface.IsBeingUsed(slot)) {
return NvResult::Busy;
}
events_interface.Free(slot);
return NvResult::Success;
}
NvResult 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;
LOG_DEBUG(Service_NVDRV, " called, user_event_id: {:X}", event_id);
if (event_id >= MaxNvEvents) {
return NvResult::BadParameter;
}
auto lock = events_interface.Lock();
if (events_interface.registered[event_id]) {
const auto result = FreeEvent(event_id);
if (result != NvResult::Success) {
return result;
}
}
events_interface.Create(event_id);
return NvResult::Success;
}
NvResult 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;
LOG_DEBUG(Service_NVDRV, " called, user_event_id: {:X}", event_id);
auto lock = events_interface.Lock();
return FreeEvent(event_id);
}
NvResult nvhost_ctrl::IocCtrlClearEventWait(const std::vector<u8>& input, std::vector<u8>& output) {
IocCtrlEventClearParams params{};
std::memcpy(¶ms, input.data(), sizeof(params));
u32 event_id = params.event_id.slot;
LOG_DEBUG(Service_NVDRV, "called, event_id: {:X}", event_id);
if (event_id >= MaxNvEvents) {
return NvResult::BadParameter;
}
auto lock = events_interface.Lock();
if (events_interface.status[event_id].exchange(
EventState::Cancelling, std::memory_order_acq_rel) == EventState::Waiting) {
system.GPU().CancelSyncptInterrupt(events_interface.assigned_syncpt[event_id],
events_interface.assigned_value[event_id]);
syncpoint_manager.RefreshSyncpoint(events_interface.assigned_syncpt[event_id]);
}
events_interface.fails[event_id]++;
events_interface.status[event_id].store(EventState::Cancelled, std::memory_order_release);
events_interface.events[event_id]->GetWritableEvent().Clear();
return NvResult::Success;
}
} // namespace Service::Nvidia::Devices
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