service: hid: Improve CreateAppletResource implementation and free resources

src/core/hle/service/hid/controllers/applet_resource.cpp

@@ -112,6 +112,19 @@ void AppletResource::UnregisterAppletResourceUserId(u64 aruid) {
     }
 }
 
+void AppletResource::FreeAppletResourceId(u64 aruid) {
+    u64 index = GetIndexFromAruid(aruid);
+    if (index >= AruidIndexMax) {
+        return;
+    }
+
+    auto& aruid_data = data[index];
+    if (aruid_data.flag.is_assigned) {
+        aruid_data.shared_memory_handle = nullptr;
+        aruid_data.flag.is_assigned.Assign(false);
+    }
+}
+
 u64 AppletResource::GetActiveAruid() {
     return active_aruid;
 }
@@ -196,4 +209,80 @@ void AppletResource::EnablePalmaBoostMode(u64 aruid, bool is_enabled) {
     data[index].flag.enable_palma_boost_mode.Assign(is_enabled);
 }
 
+Result AppletResource::RegisterCoreAppletResource() {
+    if (ref_counter == std::numeric_limits<s32>::max() - 1) {
+        return ResultAppletResourceOverflow;
+    }
+    if (ref_counter == 0) {
+        const u64 index = GetIndexFromAruid(0);
+        if (index < AruidIndexMax) {
+            return ResultAruidAlreadyRegistered;
+        }
+
+        std::size_t data_index = AruidIndexMax;
+        for (std::size_t i = 0; i < AruidIndexMax; i++) {
+            if (!data[i].flag.is_initialized) {
+                data_index = i;
+                break;
+            }
+        }
+
+        if (data_index == AruidIndexMax) {
+            return ResultAruidNoAvailableEntries;
+        }
+
+        AruidData& aruid_data = data[data_index];
+
+        aruid_data.aruid = 0;
+        aruid_data.flag.is_initialized.Assign(true);
+        aruid_data.flag.enable_pad_input.Assign(true);
+        aruid_data.flag.enable_six_axis_sensor.Assign(true);
+        aruid_data.flag.bit_18.Assign(true);
+        aruid_data.flag.enable_touchscreen.Assign(true);
+
+        data_index = AruidIndexMax;
+        for (std::size_t i = 0; i < AruidIndexMax; i++) {
+            if (registration_list.flag[i] == RegistrationStatus::Initialized) {
+                if (registration_list.aruid[i] != 0) {
+                    continue;
+                }
+                data_index = i;
+                break;
+            }
+            if (registration_list.flag[i] == RegistrationStatus::None) {
+                data_index = i;
+                break;
+            }
+        }
+
+        Result result = ResultSuccess;
+
+        if (data_index == AruidIndexMax) {
+            result = CreateAppletResource(0);
+        } else {
+            registration_list.flag[data_index] = RegistrationStatus::Initialized;
+            registration_list.aruid[data_index] = 0;
+        }
+
+        if (result.IsError()) {
+            UnregisterAppletResourceUserId(0);
+            return result;
+        }
+    }
+    ref_counter++;
+    return ResultSuccess;
+}
+
+Result AppletResource::UnregisterCoreAppletResource() {
+    if (ref_counter == 0) {
+        return ResultAppletResourceNotInitialized;
+    }
+
+    if (--ref_counter == 0) {
+        UnregisterAppletResourceUserId(0);
+    }
+
+    return ResultSuccess;
+}
+
 } // namespace Service::HID

src/core/hle/service/hid/controllers/applet_resource.h

@@ -28,6 +28,8 @@ public:
     Result RegisterAppletResourceUserId(u64 aruid, bool enable_input);
     void UnregisterAppletResourceUserId(u64 aruid);
 
+    void FreeAppletResourceId(u64 aruid);
+
     u64 GetActiveAruid();
     Result GetSharedMemoryHandle(Kernel::KSharedMemory** out_handle, u64 aruid);
 
@@ -42,6 +44,9 @@ public:
     void SetIsPalmaConnectable(u64 aruid, bool is_connectable);
     void EnablePalmaBoostMode(u64 aruid, bool is_enabled);
 
+    Result RegisterCoreAppletResource();
+    Result UnregisterCoreAppletResource();
+
 private:
     static constexpr std::size_t AruidIndexMax = 0x20;
 
@@ -81,6 +86,7 @@ private:
     u64 active_aruid{};
     AruidRegisterList registration_list{};
     std::array<AruidData, AruidIndexMax> data{};
+    s32 ref_counter{};
 
     Core::System& system;
 };

src/core/hle/service/hid/errors.h

@@ -20,6 +20,9 @@ constexpr Result InvalidNpadId{ErrorModule::HID, 709};
 constexpr Result NpadNotConnected{ErrorModule::HID, 710};
 constexpr Result InvalidArraySize{ErrorModule::HID, 715};
 
+constexpr Result ResultAppletResourceOverflow{ErrorModule::HID, 1041};
+constexpr Result ResultAppletResourceNotInitialized{ErrorModule::HID, 1042};
+constexpr Result ResultSharedMemoryNotInitialized{ErrorModule::HID, 1043};
 constexpr Result ResultAruidNoAvailableEntries{ErrorModule::HID, 1044};
 constexpr Result ResultAruidAlreadyRegistered{ErrorModule::HID, 1046};
 constexpr Result ResultAruidNotRegistered{ErrorModule::HID, 1047};

src/core/hle/service/hid/hid_server.cpp

@@ -222,16 +222,14 @@ void IHidServer::CreateAppletResource(HLERequestContext& ctx) {
     IPC::RequestParser rp{ctx};
     const auto applet_resource_user_id{rp.Pop<u64>()};
 
-    LOG_DEBUG(Service_HID, "called, applet_resource_user_id={}", applet_resource_user_id);
-
     Result result = GetResourceManager()->CreateAppletResource(applet_resource_user_id);
-    if (result.IsSuccess()) {
-        result = GetResourceManager()->GetNpad()->Activate(applet_resource_user_id);
-    }
+
+    LOG_DEBUG(Service_HID, "called, applet_resource_user_id={}, result=0x{:X}",
+              applet_resource_user_id, result.raw);
 
     IPC::ResponseBuilder rb{ctx, 2, 0, 1};
     rb.Push(result);
-    rb.PushIpcInterface<IAppletResource>(system, resource_manager);
+    rb.PushIpcInterface<IAppletResource>(system, resource_manager, applet_resource_user_id);
 }
 
 void IHidServer::ActivateDebugPad(HLERequestContext& ctx) {

src/core/hle/service/hid/resource_manager.cpp

@@ -146,10 +146,36 @@ std::shared_ptr<UniquePad> ResourceManager::GetUniquePad() const {
 }
 
 Result ResourceManager::CreateAppletResource(u64 aruid) {
+    if (aruid == 0) {
+        const auto result = RegisterCoreAppletResource();
+        if (result.IsError()) {
+            return result;
+        }
+        return GetNpad()->Activate();
+    }
+
+    const auto result = CreateAppletResourceImpl(aruid);
+    if (result.IsError()) {
+        return result;
+    }
+    return GetNpad()->Activate(aruid);
+}
+
+Result ResourceManager::CreateAppletResourceImpl(u64 aruid) {
     std::scoped_lock lock{shared_mutex};
     return applet_resource->CreateAppletResource(aruid);
 }
 
+Result ResourceManager::RegisterCoreAppletResource() {
+    std::scoped_lock lock{shared_mutex};
+    return applet_resource->RegisterCoreAppletResource();
+}
+
+Result ResourceManager::UnregisterCoreAppletResource() {
+    std::scoped_lock lock{shared_mutex};
+    return applet_resource->UnregisterCoreAppletResource();
+}
+
 Result ResourceManager::RegisterAppletResourceUserId(u64 aruid, bool bool_value) {
     std::scoped_lock lock{shared_mutex};
     return applet_resource->RegisterAppletResourceUserId(aruid, bool_value);
@@ -165,6 +191,11 @@ Result ResourceManager::GetSharedMemoryHandle(Kernel::KSharedMemory** out_handle
     return applet_resource->GetSharedMemoryHandle(out_handle, aruid);
 }
 
+void ResourceManager::FreeAppletResourceId(u64 aruid) {
+    std::scoped_lock lock{shared_mutex};
+    applet_resource->FreeAppletResourceId(aruid);
+}
+
 void ResourceManager::EnableInput(u64 aruid, bool is_enabled) {
     std::scoped_lock lock{shared_mutex};
     applet_resource->EnableInput(aruid, is_enabled);
@@ -219,8 +250,10 @@ void ResourceManager::UpdateMotion(std::uintptr_t user_data, std::chrono::nanose
     console_six_axis->OnUpdate(core_timing);
 }
 
-IAppletResource::IAppletResource(Core::System& system_, std::shared_ptr<ResourceManager> resource)
-    : ServiceFramework{system_, "IAppletResource"}, resource_manager{resource} {
+IAppletResource::IAppletResource(Core::System& system_, std::shared_ptr<ResourceManager> resource,
+                                 u64 applet_resource_user_id)
+    : ServiceFramework{system_, "IAppletResource"}, aruid{applet_resource_user_id},
+      resource_manager{resource} {
     static const FunctionInfo functions[] = {
         {0, &IAppletResource::GetSharedMemoryHandle, "GetSharedMemoryHandle"},
     };
@@ -274,14 +307,14 @@ IAppletResource::~IAppletResource() {
     system.CoreTiming().UnscheduleEvent(default_update_event, 0);
     system.CoreTiming().UnscheduleEvent(mouse_keyboard_update_event, 0);
     system.CoreTiming().UnscheduleEvent(motion_update_event, 0);
+    resource_manager->FreeAppletResourceId(aruid);
 }
 
 void IAppletResource::GetSharedMemoryHandle(HLERequestContext& ctx) {
-    LOG_DEBUG(Service_HID, "called");
-
     Kernel::KSharedMemory* handle;
-    const u64 applet_resource_user_id = resource_manager->GetAppletResource()->GetActiveAruid();
-    const auto result = resource_manager->GetSharedMemoryHandle(&handle, applet_resource_user_id);
+    const auto result = resource_manager->GetSharedMemoryHandle(&handle, aruid);
+
+    LOG_DEBUG(Service_HID, "called, applet_resource_user_id={}, result=0x{:X}", aruid, result.raw);
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(result);

src/core/hle/service/hid/resource_manager.h

@@ -66,10 +66,13 @@ public:
 
     Result CreateAppletResource(u64 aruid);
 
+    Result RegisterCoreAppletResource();
+    Result UnregisterCoreAppletResource();
     Result RegisterAppletResourceUserId(u64 aruid, bool bool_value);
     void UnregisterAppletResourceUserId(u64 aruid);
 
     Result GetSharedMemoryHandle(Kernel::KSharedMemory** out_handle, u64 aruid);
+    void FreeAppletResourceId(u64 aruid);
 
     void EnableInput(u64 aruid, bool is_enabled);
     void EnableSixAxisSensor(u64 aruid, bool is_enabled);
@@ -82,6 +85,8 @@ public:
     void UpdateMotion(std::uintptr_t user_data, std::chrono::nanoseconds ns_late);
 
 private:
+    Result CreateAppletResourceImpl(u64 aruid);
+
     bool is_initialized{false};
 
     mutable std::mutex shared_mutex;
@@ -121,7 +126,8 @@ private:
 
 class IAppletResource final : public ServiceFramework<IAppletResource> {
 public:
-    explicit IAppletResource(Core::System& system_, std::shared_ptr<ResourceManager> resource);
+    explicit IAppletResource(Core::System& system_, std::shared_ptr<ResourceManager> resource,
+                             u64 applet_resource_user_id);
     ~IAppletResource() override;
 
 private:
@@ -132,6 +138,7 @@ private:
     std::shared_ptr<Core::Timing::EventType> mouse_keyboard_update_event;
     std::shared_ptr<Core::Timing::EventType> motion_update_event;
 
+    u64 aruid;
     std::shared_ptr<ResourceManager> resource_manager;
 };