nfp: Improve implementation

src/core/hid/emulated_controller.cpp

@@ -884,6 +884,12 @@ bool EmulatedController::TestVibration(std::size_t device_index) {
     return SetVibration(device_index, DEFAULT_VIBRATION_VALUE);
 }
 
+bool EmulatedController::SetPollingMode(Common::Input::PollingMode polling_mode) {
+    LOG_INFO(Service_HID, "Set polling mode {}", polling_mode);
+    auto& output_device = output_devices[static_cast<std::size_t>(DeviceIndex::Right)];
+    return output_device->SetPollingMode(polling_mode) == Common::Input::PollingError::None;
+}
+
 void EmulatedController::SetLedPattern() {
     for (auto& device : output_devices) {
         if (!device) {

src/core/hid/emulated_controller.h

@@ -309,6 +309,8 @@ public:
      */
     bool TestVibration(std::size_t device_index);
 
+    bool SetPollingMode(Common::Input::PollingMode polling_mode);
+
     /// Returns the led pattern corresponding to this emulated controller
     LedPattern GetLedPattern() const;
 

src/core/hle/service/nfp/nfp.cpp

@@ -7,6 +7,9 @@
 
 #include "common/logging/log.h"
 #include "core/core.h"
+#include "core/hid/emulated_controller.h"
+#include "core/hid/hid_core.h"
+#include "core/hid/hid_types.h"
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/kernel/k_event.h"
 #include "core/hle/service/nfp/nfp.h"
@@ -14,12 +17,18 @@
 
 namespace Service::NFP {
 namespace ErrCodes {
-constexpr ResultCode ERR_NO_APPLICATION_AREA(ErrorModule::NFP, 152);
+constexpr ResultCode DeviceNotFound(ErrorModule::NFP, 64);
+constexpr ResultCode WrongDeviceState(ErrorModule::NFP, 73);
+constexpr ResultCode ApplicationAreaIsNotInitialized(ErrorModule::NFP, 128);
+constexpr ResultCode NoApplicationArea(ErrorModule::NFP, 152);
+constexpr ResultCode ApplicationAreaExist(ErrorModule::NFP, 168);
 } // namespace ErrCodes
 
+constexpr u32 ApplicationAreaSize = 0xD8;
+
 IUser::IUser(Module::Interface& nfp_interface_, Core::System& system_)
-    : ServiceFramework{system_, "NFP::IUser"}, nfp_interface{nfp_interface_},
-      deactivate_event{system.Kernel()}, availability_change_event{system.Kernel()} {
+    : ServiceFramework{system_, "NFP::IUser"}, service_context{system_, service_name},
+      nfp_interface{nfp_interface_} {
     static const FunctionInfo functions[] = {
         {0, &IUser::Initialize, "Initialize"},
         {1, &IUser::Finalize, "Finalize"},
@@ -30,10 +39,10 @@ IUser::IUser(Module::Interface& nfp_interface_, Core::System& system_)
         {6, &IUser::Unmount, "Unmount"},
         {7, &IUser::OpenApplicationArea, "OpenApplicationArea"},
         {8, &IUser::GetApplicationArea, "GetApplicationArea"},
-        {9, nullptr, "SetApplicationArea"},
+        {9, &IUser::SetApplicationArea, "SetApplicationArea"},
         {10, nullptr, "Flush"},
         {11, nullptr, "Restore"},
-        {12, nullptr, "CreateApplicationArea"},
+        {12, &IUser::CreateApplicationArea, "CreateApplicationArea"},
         {13, &IUser::GetTagInfo, "GetTagInfo"},
         {14, &IUser::GetRegisterInfo, "GetRegisterInfo"},
         {15, &IUser::GetCommonInfo, "GetCommonInfo"},
@@ -49,220 +58,416 @@ IUser::IUser(Module::Interface& nfp_interface_, Core::System& system_)
     };
     RegisterHandlers(functions);
 
-    Kernel::KAutoObject::Create(std::addressof(deactivate_event));
-    Kernel::KAutoObject::Create(std::addressof(availability_change_event));
-
-    deactivate_event.Initialize("IUser:DeactivateEvent");
-    availability_change_event.Initialize("IUser:AvailabilityChangeEvent");
+    availability_change_event = service_context.CreateEvent("IUser:AvailabilityChangeEvent");
 }
 
 void IUser::Initialize(Kernel::HLERequestContext& ctx) {
-    LOG_DEBUG(Service_NFC, "called");
+    LOG_INFO(Service_NFC, "called");
+
+    state = State::Initialized;
+
+    // TODO(german77): Loop through all interfaces
+    nfp_interface.Initialize();
 
     IPC::ResponseBuilder rb{ctx, 2, 0};
     rb.Push(ResultSuccess);
-
-    state = State::Initialized;
 }
 
 void IUser::Finalize(Kernel::HLERequestContext& ctx) {
-    LOG_DEBUG(Service_NFP, "called");
+    LOG_INFO(Service_NFP, "called");
+
+    state = State::NonInitialized;
 
-    device_state = DeviceState::Finalized;
+    // TODO(german77): Loop through all interfaces
+    nfp_interface.Finalize();
 
     IPC::ResponseBuilder rb{ctx, 2};
     rb.Push(ResultSuccess);
 }
 
 void IUser::ListDevices(Kernel::HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
-    const u32 array_size = rp.Pop<u32>();
-    LOG_DEBUG(Service_NFP, "called, array_size={}", array_size);
+    LOG_INFO(Service_NFP, "called");
+
+    std::vector<u64> devices;
+
+    // TODO(german77): Loop through all interfaces
+    devices.push_back(nfp_interface.GetHandle());
 
-    ctx.WriteBuffer(device_handle);
+    ctx.WriteBuffer(devices);
 
     IPC::ResponseBuilder rb{ctx, 3};
     rb.Push(ResultSuccess);
-    rb.Push<u32>(1);
+    rb.Push(devices.size());
 }
 
 void IUser::StartDetection(Kernel::HLERequestContext& ctx) {
-    LOG_DEBUG(Service_NFP, "called");
-
-    if (device_state == DeviceState::Initialized || device_state == DeviceState::TagRemoved) {
-        device_state = DeviceState::SearchingForTag;
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    const auto nfp_protocol{rp.Pop<s32>()};
+    LOG_INFO(Service_NFP, "called, device_handle={}, nfp_protocol={}", device_handle, nfp_protocol);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        const auto result = nfp_interface.StartDetection();
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(result);
+        return;
     }
+
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
+
     IPC::ResponseBuilder rb{ctx, 2};
-    rb.Push(ResultSuccess);
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::StopDetection(Kernel::HLERequestContext& ctx) {
-    LOG_DEBUG(Service_NFP, "called");
-
-    switch (device_state) {
-    case DeviceState::TagFound:
-    case DeviceState::TagMounted:
-        deactivate_event.GetWritableEvent().Signal();
-        device_state = DeviceState::Initialized;
-        break;
-    case DeviceState::SearchingForTag:
-    case DeviceState::TagRemoved:
-        device_state = DeviceState::Initialized;
-        break;
-    default:
-        break;
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        const auto result = nfp_interface.StopDetection();
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(result);
+        return;
     }
+
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
+
     IPC::ResponseBuilder rb{ctx, 2};
-    rb.Push(ResultSuccess);
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::Mount(Kernel::HLERequestContext& ctx) {
-    LOG_DEBUG(Service_NFP, "called");
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    const auto model_type{rp.PopEnum<ModelType>()};
+    const auto mount_target{rp.PopEnum<MountTarget>()};
+    LOG_INFO(Service_NFP, "called, device_handle={}, model_type={}, mount_target={}", device_handle,
+             model_type, mount_target);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        const auto result = nfp_interface.Mount();
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(result);
+        return;
+    }
+
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
 
-    device_state = DeviceState::TagMounted;
     IPC::ResponseBuilder rb{ctx, 2};
-    rb.Push(ResultSuccess);
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::Unmount(Kernel::HLERequestContext& ctx) {
-    LOG_DEBUG(Service_NFP, "called");
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        const auto result = nfp_interface.Unmount();
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(result);
+        return;
+    }
 
-    device_state = DeviceState::TagFound;
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
 
     IPC::ResponseBuilder rb{ctx, 2};
-    rb.Push(ResultSuccess);
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::OpenApplicationArea(Kernel::HLERequestContext& ctx) {
-    LOG_WARNING(Service_NFP, "(STUBBED) called");
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    const auto access_id{rp.Pop<u32>()};
+    LOG_INFO(Service_NFP, "called, device_handle={}, access_id={}", device_handle, access_id);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        const auto result = nfp_interface.OpenApplicationArea(access_id);
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(result);
+        return;
+    }
+
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
+
     IPC::ResponseBuilder rb{ctx, 2};
-    rb.Push(ErrCodes::ERR_NO_APPLICATION_AREA);
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::GetApplicationArea(Kernel::HLERequestContext& ctx) {
-    LOG_WARNING(Service_NFP, "(STUBBED) called");
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        std::vector<u8> data{};
+        const auto result = nfp_interface.GetApplicationArea(data);
+
+        ctx.WriteBuffer(data);
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(result);
+        rb.PushRaw<u32>(data.size());
+        return;
+    }
 
-    // TODO(ogniK): Pull application area from amiibo
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
 
-    IPC::ResponseBuilder rb{ctx, 3};
-    rb.Push(ResultSuccess);
-    rb.PushRaw<u32>(0); // This is from the GetCommonInfo stub
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ErrCodes::DeviceNotFound);
+}
+
+void IUser::SetApplicationArea(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    const auto data{ctx.ReadBuffer()};
+    LOG_INFO(Service_NFP, "called, device_handle={}, data_size={}", device_handle, data.size());
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        const auto result = nfp_interface.SetApplicationArea(data);
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(result);
+        return;
+    }
+
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ErrCodes::DeviceNotFound);
+}
+
+void IUser::CreateApplicationArea(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    const auto access_id{rp.Pop<u32>()};
+    const auto data{ctx.ReadBuffer()};
+    LOG_INFO(Service_NFP, "called, device_handle={}, data_size={}, access_id={}", device_handle,
+             access_id, data.size());
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        const auto result = nfp_interface.CreateApplicationArea(access_id, data);
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(result);
+        return;
+    }
+
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::GetTagInfo(Kernel::HLERequestContext& ctx) {
-    LOG_DEBUG(Service_NFP, "called");
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        TagInfo tag_info{};
+        const auto result = nfp_interface.GetTagInfo(tag_info);
+        ctx.WriteBuffer(tag_info);
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(result);
+        return;
+    }
+
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
 
     IPC::ResponseBuilder rb{ctx, 2};
-    const auto& amiibo = nfp_interface.GetAmiiboBuffer();
-    const TagInfo tag_info{
-        .uuid = amiibo.uuid,
-        .uuid_length = static_cast<u8>(amiibo.uuid.size()),
-        .protocol = 1, // TODO(ogniK): Figure out actual values
-        .tag_type = 2,
-    };
-    ctx.WriteBuffer(tag_info);
-    rb.Push(ResultSuccess);
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::GetRegisterInfo(Kernel::HLERequestContext& ctx) {
-    LOG_WARNING(Service_NFP, "(STUBBED) called");
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        RegisterInfo register_info{};
+        const auto result = nfp_interface.GetRegisterInfo(register_info);
+        ctx.WriteBuffer(register_info);
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(result);
+        return;
+    }
 
-    // TODO(ogniK): Pull Mii and owner data from amiibo
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
 
     IPC::ResponseBuilder rb{ctx, 2};
-    rb.Push(ResultSuccess);
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::GetCommonInfo(Kernel::HLERequestContext& ctx) {
-    LOG_WARNING(Service_NFP, "(STUBBED) called");
-
-    // TODO(ogniK): Pull common information from amiibo
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        CommonInfo common_info{};
+        const auto result = nfp_interface.GetCommonInfo(common_info);
+        ctx.WriteBuffer(common_info);
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(result);
+        return;
+    }
 
-    CommonInfo common_info{};
-    common_info.application_area_size = 0;
-    ctx.WriteBuffer(common_info);
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
 
     IPC::ResponseBuilder rb{ctx, 2};
-    rb.Push(ResultSuccess);
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::GetModelInfo(Kernel::HLERequestContext& ctx) {
-    LOG_DEBUG(Service_NFP, "called");
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        ModelInfo model_info{};
+        const auto result = nfp_interface.GetModelInfo(model_info);
+        ctx.WriteBuffer(model_info);
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(ResultSuccess);
+        return;
+    }
+
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
 
     IPC::ResponseBuilder rb{ctx, 2};
-    const auto& amiibo = nfp_interface.GetAmiiboBuffer();
-    ctx.WriteBuffer(amiibo.model_info);
-    rb.Push(ResultSuccess);
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::AttachActivateEvent(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp{ctx};
-    const u64 dev_handle = rp.Pop<u64>();
-    LOG_DEBUG(Service_NFP, "called, dev_handle=0x{:X}", dev_handle);
+    const auto device_handle{rp.Pop<u64>()};
+    LOG_DEBUG(Service_NFP, "called, device_handle={}", device_handle);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(ResultSuccess);
+        rb.PushCopyObjects(nfp_interface.GetActivateEvent());
+        return;
+    }
 
-    IPC::ResponseBuilder rb{ctx, 2, 1};
-    rb.Push(ResultSuccess);
-    rb.PushCopyObjects(nfp_interface.GetNFCEvent());
-    has_attached_handle = true;
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::AttachDeactivateEvent(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp{ctx};
-    const u64 dev_handle = rp.Pop<u64>();
-    LOG_DEBUG(Service_NFP, "called, dev_handle=0x{:X}", dev_handle);
+    const auto device_handle{rp.Pop<u64>()};
+    LOG_DEBUG(Service_NFP, "called, device_handle={}", device_handle);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(ResultSuccess);
+        rb.PushCopyObjects(nfp_interface.GetDeactivateEvent());
+        return;
+    }
 
-    IPC::ResponseBuilder rb{ctx, 2, 1};
-    rb.Push(ResultSuccess);
-    rb.PushCopyObjects(deactivate_event.GetReadableEvent());
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::GetState(Kernel::HLERequestContext& ctx) {
-    LOG_DEBUG(Service_NFC, "called");
+    LOG_INFO(Service_NFC, "called");
 
     IPC::ResponseBuilder rb{ctx, 3, 0};
     rb.Push(ResultSuccess);
-    rb.PushRaw<u32>(static_cast<u32>(state));
+    rb.PushEnum(state);
 }
 
 void IUser::GetDeviceState(Kernel::HLERequestContext& ctx) {
-    LOG_DEBUG(Service_NFP, "called");
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(ResultSuccess);
+        rb.PushEnum(nfp_interface.GetCurrentState());
+        return;
+    }
 
-    IPC::ResponseBuilder rb{ctx, 3};
-    rb.Push(ResultSuccess);
-    rb.Push<u32>(static_cast<u32>(device_state));
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::GetNpadId(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp{ctx};
-    const u64 dev_handle = rp.Pop<u64>();
-    LOG_DEBUG(Service_NFP, "called, dev_handle=0x{:X}", dev_handle);
+    const auto device_handle{rp.Pop<u64>()};
+    LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(ResultSuccess);
+        rb.PushEnum(nfp_interface.GetNpadId());
+        return;
+    }
 
-    IPC::ResponseBuilder rb{ctx, 3};
-    rb.Push(ResultSuccess);
-    rb.Push<u32>(npad_id);
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::GetApplicationAreaSize(Kernel::HLERequestContext& ctx) {
-    LOG_WARNING(Service_NFP, "(STUBBED) called");
-    // We don't need to worry about this since we can just open the file
-    IPC::ResponseBuilder rb{ctx, 3};
-    rb.Push(ResultSuccess);
-    rb.PushRaw<u32>(0); // This is from the GetCommonInfo stub
+    IPC::RequestParser rp{ctx};
+    const auto device_handle{rp.Pop<u64>()};
+    LOG_INFO(Service_NFP, "called, device_handle={}", device_handle);
+
+    // TODO(german77): Loop through all interfaces
+    if (device_handle == nfp_interface.GetHandle()) {
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(ResultSuccess);
+        rb.Push(ApplicationAreaSize);
+        return;
+    }
+
+    LOG_ERROR(Service_NFP, "Handle not found, device_handle={}", device_handle);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ErrCodes::DeviceNotFound);
 }
 
 void IUser::AttachAvailabilityChangeEvent(Kernel::HLERequestContext& ctx) {
-    LOG_WARNING(Service_NFP, "(STUBBED) called");
+    LOG_DEBUG(Service_NFP, "(STUBBED) called");
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(ResultSuccess);
-    rb.PushCopyObjects(availability_change_event.GetReadableEvent());
+    rb.PushCopyObjects(availability_change_event->GetReadableEvent());
 }
 
 Module::Interface::Interface(std::shared_ptr<Module> module_, Core::System& system_,
                              const char* name)
-    : ServiceFramework{system_, name}, nfc_tag_load{system.Kernel()}, module{std::move(module_)} {
-    Kernel::KAutoObject::Create(std::addressof(nfc_tag_load));
-    nfc_tag_load.Initialize("IUser:NFCTagDetected");
+    : ServiceFramework{system_, name}, module{std::move(module_)},
+      npad_id{Core::HID::NpadIdType::Player1}, service_context{system_, service_name} {
+    activate_event = service_context.CreateEvent("IUser:NFPActivateEvent");
+    deactivate_event = service_context.CreateEvent("IUser:NFPDeactivateEvent");
 }
 
 Module::Interface::~Interface() = default;
@@ -272,25 +477,254 @@ void Module::Interface::CreateUserInterface(Kernel::HLERequestContext& ctx) {
 
     IPC::ResponseBuilder rb{ctx, 2, 0, 1};
     rb.Push(ResultSuccess);
-    rb.PushIpcInterface<IUser>(*this, system, service_context);
+    rb.PushIpcInterface<IUser>(*this, system);
 }
 
 bool Module::Interface::LoadAmiibo(const std::vector<u8>& buffer) {
     if (buffer.size() < sizeof(AmiiboFile)) {
+        LOG_ERROR(Service_NFP, "Wrong file size");
         return false;
     }
 
+    if (device_state != DeviceState::SearchingForTag) {
+        LOG_ERROR(Service_NFP, "Game is not looking for amiibos, current state {}", device_state);
+        return false;
+    }
+
+    LOG_INFO(Service_NFP, "New Amiibo detected");
     std::memcpy(&amiibo, buffer.data(), sizeof(amiibo));
-    nfc_tag_load->GetWritableEvent().Signal();
+    device_state = DeviceState::TagFound;
+    activate_event->GetWritableEvent().Signal();
     return true;
 }
 
-Kernel::KReadableEvent& Module::Interface::GetNFCEvent() {
-    return nfc_tag_load->GetReadableEvent();
+void Module::Interface::CloseAmiibo() {
+    LOG_INFO(Service_NFP, "Remove amiibo");
+    device_state = DeviceState::TagRemoved;
+    write_counter = 0;
+    is_application_area_initialized = false;
+    application_area_id = 0;
+    application_area_data.clear();
+    deactivate_event->GetWritableEvent().Signal();
+}
+
+Kernel::KReadableEvent& Module::Interface::GetActivateEvent() const {
+    return activate_event->GetReadableEvent();
+}
+
+Kernel::KReadableEvent& Module::Interface::GetDeactivateEvent() const {
+    return deactivate_event->GetReadableEvent();
+}
+
+void Module::Interface::Initialize() {
+    device_state = DeviceState::Initialized;
+}
+
+void Module::Interface::Finalize() {
+    device_state = DeviceState::Unaviable;
+    write_counter = 0;
+    is_application_area_initialized = false;
+    application_area_id = 0;
+    application_area_data.clear();
+}
+
+ResultCode Module::Interface::StartDetection() {
+    auto npad_device = system.HIDCore().GetEmulatedController(npad_id);
+
+    // TODO(german77): Add callback for when nfc data is available
+
+    if (device_state == DeviceState::Initialized || device_state == DeviceState::TagRemoved) {
+        npad_device->SetPollingMode(Common::Input::PollingMode::NFC);
+        device_state = DeviceState::SearchingForTag;
+        return ResultSuccess;
+    }
+
+    LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
+    return ErrCodes::WrongDeviceState;
+}
+
+ResultCode Module::Interface::StopDetection() {
+    auto npad_device = system.HIDCore().GetEmulatedController(npad_id);
+    npad_device->SetPollingMode(Common::Input::PollingMode::Active);
+
+    if (device_state == DeviceState::TagFound || device_state == DeviceState::TagMounted) {
+        CloseAmiibo();
+        return ResultSuccess;
+    }
+    if (device_state == DeviceState::SearchingForTag || device_state == DeviceState::TagRemoved) {
+        device_state = DeviceState::Initialized;
+        return ResultSuccess;
+    }
+
+    LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
+    return ErrCodes::WrongDeviceState;
+}
+
+ResultCode Module::Interface::Mount() {
+    if (device_state == DeviceState::TagFound) {
+        device_state = DeviceState::TagMounted;
+        return ResultSuccess;
+    }
+
+    LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
+    return ErrCodes::WrongDeviceState;
+}
+
+ResultCode Module::Interface::Unmount() {
+    if (device_state == DeviceState::TagMounted) {
+        is_application_area_initialized = false;
+        application_area_id = 0;
+        application_area_data.clear();
+        device_state = DeviceState::TagFound;
+        return ResultSuccess;
+    }
+
+    LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
+    return ErrCodes::WrongDeviceState;
+}
+
+ResultCode Module::Interface::GetTagInfo(TagInfo& tag_info) const {
+    if (device_state == DeviceState::TagFound || device_state == DeviceState::TagMounted) {
+        // Read this data from the amiibo save file
+        tag_info = {
+            .uuid = amiibo.uuid,
+            .uuid_length = static_cast<u8>(amiibo.uuid.size()),
+            .protocol = 0xFFFFFFFF, // TODO(ogniK): Figure out actual values
+            .tag_type = 0xFFFFFFFF,
+        };
+        return ResultSuccess;
+    }
+
+    LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
+    return ErrCodes::WrongDeviceState;
+}
+
+ResultCode Module::Interface::GetCommonInfo(CommonInfo& common_info) const {
+    if (device_state != DeviceState::TagMounted) {
+        LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
+        return ErrCodes::WrongDeviceState;
+    }
+
+    // Read this data from the amiibo save file
+    common_info = {
+        .last_write_year = 2022,
+        .last_write_month = 2,
+        .last_write_day = 7,
+        .write_counter = write_counter,
+        .version = 1,
+        .application_area_size = ApplicationAreaSize,
+    };
+    return ResultSuccess;
+}
+
+ResultCode Module::Interface::GetModelInfo(ModelInfo& model_info) const {
+    if (device_state != DeviceState::TagMounted) {
+        LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
+        return ErrCodes::WrongDeviceState;
+    }
+
+    model_info = amiibo.model_info;
+    return ResultSuccess;
+}
+
+ResultCode Module::Interface::GetRegisterInfo(RegisterInfo& register_info) const {
+    if (device_state != DeviceState::TagMounted) {
+        LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
+        return ErrCodes::WrongDeviceState;
+    }
+
+    Service::Mii::MiiManager manager;
+
+    // Read this data from the amiibo save file
+    register_info = {
+        .mii_char_info = manager.BuildDefault(0),
+        .first_write_year = 2022,
+        .first_write_month = 2,
+        .first_write_day = 7,
+        .amiibo_name = {'Y', 'u', 'z', 'u', 'A', 'm', 'i', 'i', 'b', 'o', 0},
+        .unknown = {},
+    };
+    return ResultSuccess;
+}
+
+ResultCode Module::Interface::OpenApplicationArea(u32 access_id) {
+    if (device_state != DeviceState::TagMounted) {
+        LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
+        return ErrCodes::WrongDeviceState;
+    }
+    // if (AmiiboApplicationDataExist(access_id)) {
+    //    application_area_data = LoadAmiiboApplicationData(access_id);
+    //    application_area_id = access_id;
+    //    is_application_area_initialized = true;
+    // }
+    if (!is_application_area_initialized) {
+        LOG_ERROR(Service_NFP, "Application area is not initialized");
+        return ErrCodes::ApplicationAreaIsNotInitialized;
+    }
+    return ResultSuccess;
+}
+
+ResultCode Module::Interface::GetApplicationArea(std::vector<u8>& data) const {
+    if (device_state != DeviceState::TagMounted) {
+        LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
+        return ErrCodes::WrongDeviceState;
+    }
+    if (!is_application_area_initialized) {
+        LOG_ERROR(Service_NFP, "Application area is not initialized");
+        return ErrCodes::ApplicationAreaIsNotInitialized;
+    }
+
+    data = application_area_data;
+
+    return ResultSuccess;
+}
+
+ResultCode Module::Interface::SetApplicationArea(const std::vector<u8>& data) {
+    if (device_state != DeviceState::TagMounted) {
+        LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
+        return ErrCodes::WrongDeviceState;
+    }
+    if (!is_application_area_initialized) {
+        LOG_ERROR(Service_NFP, "Application area is not initialized");
+        return ErrCodes::ApplicationAreaIsNotInitialized;
+    }
+    application_area_data = data;
+    write_counter++;
+    // SaveAmiiboApplicationData(application_area_id,application_area_data);
+    return ResultSuccess;
+}
+
+ResultCode Module::Interface::CreateApplicationArea(u32 access_id, const std::vector<u8>& data) {
+    if (device_state != DeviceState::TagMounted) {
+        LOG_ERROR(Service_NFP, "Wrong device state {}", device_state);
+        return ErrCodes::WrongDeviceState;
+    }
+    // if (AmiiboApplicationDataExist(access_id)) {
+    //    LOG_ERROR(Service_NFP, "Application area already exist");
+    //    return ErrCodes::ApplicationAreaExist;
+    // }
+    // if (LoadAmiiboApplicationData(access_id,data)) {
+    //    is_application_area_initialized = true;
+    //    application_area_id = access_id;
+    // }
+    application_area_data = data;
+    application_area_id = access_id;
+    write_counter = 0;
+    // SaveAmiiboApplicationData(application_area_id,application_area_data);
+    return ResultSuccess;
+}
+
+u64 Module::Interface::GetHandle() const {
+    // Generate a handle based of the npad id
+    return static_cast<u64>(npad_id);
+}
+
+DeviceState Module::Interface::GetCurrentState() const {
+    return device_state;
 }
 
-const Module::Interface::AmiiboFile& Module::Interface::GetAmiiboBuffer() const {
-    return amiibo;
+Core::HID::NpadIdType Module::Interface::GetNpadId() const {
+    return npad_id;
 }
 
 void InstallInterfaces(SM::ServiceManager& service_manager, Core::System& system) {

src/core/hle/service/nfp/nfp.h

@@ -8,79 +8,155 @@
 #include <vector>
 
 #include "core/hle/service/kernel_helpers.h"
-#include "core/hle/kernel/k_event.h"
-#include "core/hle/service/mii/manager.h"
+#include "core/hle/service/mii/mii_manager.h"
 #include "core/hle/service/service.h"
 
 namespace Kernel {
 class KEvent;
-}
+class KReadableEvent;
+} // namespace Kernel
+
+namespace Core::HID {
+enum class NpadIdType : u32;
+} // namespace Core::HID
 
 namespace Service::NFP {
 
 enum class ServiceType : u32 {
-    User = 0,
-    Debug = 1,
-    System = 2,
+    User,
+    Debug,
+    System,
 };
 
 enum class State : u32 {
-    NonInitialized = 0,
-    Initialized = 1,
+    NonInitialized,
+    Initialized,
 };
 
 enum class DeviceState : u32 {
-    Initialized = 0,
-    SearchingForTag = 1,
-    TagFound = 2,
-    TagRemoved = 3,
-    TagMounted = 4,
-    Unaviable = 5,
-    Finalized = 6
+    Initialized,
+    SearchingForTag,
+    TagFound,
+    TagRemoved,
+    TagMounted,
+    Unaviable,
+    Finalized,
+};
+
+enum class ModelType : u32 {
+    Amiibo,
 };
 
 enum class MountTarget : u32 {
-    Rom = 1,
-    Ram = 2,
-    All = 3,
+    Rom,
+    Ram,
+    All,
 };
 
 struct TagInfo {
     std::array<u8, 10> uuid;
     u8 uuid_length;
     INSERT_PADDING_BYTES(0x15);
-    u32_le protocol;
-    u32_le tag_type;
-    INSERT_PADDING_BYTES(0x2c);
+    u32 protocol;
+    u32 tag_type;
+    INSERT_PADDING_BYTES(0x30);
 };
-static_assert(sizeof(TagInfo) == 0x54, "TagInfo is an invalid size");
+static_assert(sizeof(TagInfo) == 0x58, "TagInfo is an invalid size");
 
 struct CommonInfo {
-    u16_be last_write_year;
+    u16 last_write_year;
     u8 last_write_month;
     u8 last_write_day;
-    u16_be write_counter;
-    u16_be version;
-    u32_be application_area_size;
+    u16 write_counter;
+    u16 version;
+    u32 application_area_size;
     INSERT_PADDING_BYTES(0x34);
 };
 static_assert(sizeof(CommonInfo) == 0x40, "CommonInfo is an invalid size");
 
 struct ModelInfo {
-    std::array<u8, 0x8> ammibo_id;
-    INSERT_PADDING_BYTES(0x38);
+    u16 character_id;
+    u8 character_variant;
+    u8 figure_type;
+    u16 model_number;
+    u8 series;
+    INSERT_PADDING_BYTES(0x39);
 };
 static_assert(sizeof(ModelInfo) == 0x40, "ModelInfo is an invalid size");
 
 struct RegisterInfo {
-    Service::Mii::MiiInfo mii;
-    u16_be first_write_year;
+    Service::Mii::MiiInfo mii_char_info;
+    u16 first_write_year;
     u8 first_write_month;
     u8 first_write_day;
     std::array<u8, 11> amiibo_name;
-    INSERT_PADDING_BYTES(0x99);
+    u8 unknown;
+    INSERT_PADDING_BYTES(0x98);
+};
+static_assert(sizeof(RegisterInfo) == 0x100, "RegisterInfo is an invalid size");
+
+class Module final {
+public:
+    class Interface : public ServiceFramework<Interface> {
+    public:
+        explicit Interface(std::shared_ptr<Module> module_, Core::System& system_,
+                           const char* name);
+        ~Interface() override;
+
+        struct AmiiboFile {
+            std::array<u8, 10> uuid;
+            INSERT_PADDING_BYTES(0x4); // Compability container
+            INSERT_PADDING_BYTES(0x46);
+            ModelInfo model_info;
+        };
+        static_assert(sizeof(AmiiboFile) == 0x94, "AmiiboFile is an invalid size");
+
+        void CreateUserInterface(Kernel::HLERequestContext& ctx);
+        bool LoadAmiibo(const std::vector<u8>& buffer);
+        void CloseAmiibo();
+
+        void Initialize();
+        void Finalize();
+
+        ResultCode StartDetection();
+        ResultCode StopDetection();
+        ResultCode Mount();
+        ResultCode Unmount();
+
+        ResultCode GetTagInfo(TagInfo& tag_info) const;
+        ResultCode GetCommonInfo(CommonInfo& common_info) const;
+        ResultCode GetModelInfo(ModelInfo& model_info) const;
+        ResultCode GetRegisterInfo(RegisterInfo& register_info) const;
+
+        ResultCode OpenApplicationArea(u32 access_id);
+        ResultCode GetApplicationArea(std::vector<u8>& data) const;
+        ResultCode SetApplicationArea(const std::vector<u8>& data);
+        ResultCode CreateApplicationArea(u32 access_id, const std::vector<u8>& data);
+
+        u64 GetHandle() const;
+        DeviceState GetCurrentState() const;
+        Core::HID::NpadIdType GetNpadId() const;
+
+        Kernel::KReadableEvent& GetActivateEvent() const;
+        Kernel::KReadableEvent& GetDeactivateEvent() const;
+
+    protected:
+        std::shared_ptr<Module> module;
+
+    private:
+        const Core::HID::NpadIdType npad_id;
+
+        DeviceState device_state{DeviceState::Unaviable};
+        KernelHelpers::ServiceContext service_context;
+        Kernel::KEvent* activate_event;
+        Kernel::KEvent* deactivate_event;
+        AmiiboFile amiibo{};
+        u16 write_counter{};
+        bool is_application_area_initialized{};
+        u32 application_area_id;
+        std::vector<u8> application_area_data;
+    };
 };
-// static_assert(sizeof(RegisterInfo) == 0x106, "RegisterInfo is an invalid size");
 
 class IUser final : public ServiceFramework<IUser> {
 public:
@@ -96,6 +172,8 @@ private:
     void Unmount(Kernel::HLERequestContext& ctx);
     void OpenApplicationArea(Kernel::HLERequestContext& ctx);
     void GetApplicationArea(Kernel::HLERequestContext& ctx);
+    void SetApplicationArea(Kernel::HLERequestContext& ctx);
+    void CreateApplicationArea(Kernel::HLERequestContext& ctx);
     void GetTagInfo(Kernel::HLERequestContext& ctx);
     void GetRegisterInfo(Kernel::HLERequestContext& ctx);
     void GetCommonInfo(Kernel::HLERequestContext& ctx);
@@ -108,50 +186,13 @@ private:
     void GetApplicationAreaSize(Kernel::HLERequestContext& ctx);
     void AttachAvailabilityChangeEvent(Kernel::HLERequestContext& ctx);
 
-    bool has_attached_handle{};
-    const u64 device_handle{0}; // Npad device 1
-    const u32 npad_id{0};       // Player 1 controller
-    State state{State::NonInitialized};
-    DeviceState device_state{DeviceState::Initialized};
-    Module::Interface& nfp_interface;
-    Kernel::KEvent deactivate_event;
-    Kernel::KEvent availability_change_event;
-};
+    KernelHelpers::ServiceContext service_context;
 
-class Module final {
-public:
-    class Interface : public ServiceFramework<Interface> {
-    public:
-        explicit Interface(std::shared_ptr<Module> module_, Core::System& system_,
-                           const char* name);
-        ~Interface() override;
-
-        struct ModelInfo {
-            std::array<u8, 0x8> amiibo_identification_block;
-            INSERT_PADDING_BYTES(0x38);
-        };
-        static_assert(sizeof(ModelInfo) == 0x40, "ModelInfo is an invalid size");
-
-        struct AmiiboFile {
-            std::array<u8, 10> uuid;
-            INSERT_PADDING_BYTES(0x4a);
-            ModelInfo model_info;
-        };
-        static_assert(sizeof(AmiiboFile) == 0x94, "AmiiboFile is an invalid size");
-
-        void CreateUserInterface(Kernel::HLERequestContext& ctx);
-        bool LoadAmiibo(const std::vector<u8>& buffer);
-        Kernel::KReadableEvent& GetNFCEvent();
-        const AmiiboFile& GetAmiiboBuffer() const;
-
-    protected:
-        std::shared_ptr<Module> module;
+    // TODO(german77): We should have a vector of interfaces
+    Module::Interface& nfp_interface;
 
-    private:
-        KernelHelpers::ServiceContext service_context;
-        Kernel::KEvent* nfc_tag_load;
-        AmiiboFile amiibo{};
-    };
+    State state{State::NonInitialized};
+    Kernel::KEvent* availability_change_event;
 };
 
 void InstallInterfaces(SM::ServiceManager& service_manager, Core::System& system);