Kernel: Set interval and average trb length on configure endpoint

Real controllers seem to require this while spec 4.8.2.4 says that they
should be left as zero.

kernel/include/kernel/USB/Definitions.h

@@ -10,13 +10,20 @@ namespace Kernel
 	{
 		enum class SpeedClass
 		{
-			None,
 			LowSpeed,
 			FullSpeed,
 			HighSpeed,
 			SuperSpeed,
 		};
 
+		enum class EndpointType
+		{
+			Control     = 0b00,
+			Isochronous = 0b01,
+			Bulk        = 0b10,
+			Interrupt   = 0b11,
+		};
+
 		enum class DeviceBaseClass : uint8_t
 		{
 			CommunicationAndCDCControl = 0x02,

kernel/include/kernel/USB/Device.h

@@ -53,7 +53,9 @@ namespace Kernel
 		};
 
 	public:
-		USBDevice() = default;
+		USBDevice(USB::SpeedClass speed_class)
+			: m_speed_class(speed_class)
+		{}
 		virtual ~USBDevice() = default;
 
 		BAN::ErrorOr<void> initialize();
@@ -72,6 +74,9 @@ namespace Kernel
 	private:
 		BAN::ErrorOr<ConfigurationDescriptor> parse_configuration(size_t index);
 
+	protected:
+		const USB::SpeedClass m_speed_class;
+
 	private:
 		DeviceDescriptor m_descriptor;
 		BAN::UniqPtr<DMARegion> m_dma_buffer;

kernel/include/kernel/USB/XHCI/Device.h

@@ -43,11 +43,7 @@ namespace Kernel
 		BAN::ErrorOr<void> initialize_control_endpoint() override;
 
 	private:
-		XHCIDevice(XHCIController& controller, uint32_t port_id, uint32_t slot_id)
-			: m_controller(controller)
-			, m_port_id(port_id)
-			, m_slot_id(slot_id)
-		{}
+		XHCIDevice(XHCIController& controller, uint32_t port_id, uint32_t slot_id);
 		~XHCIDevice();
 		BAN::ErrorOr<void> update_actual_max_packet_size();
 
@@ -55,6 +51,8 @@ namespace Kernel
 
 		void advance_endpoint_enqueue(Endpoint&, bool chain);
 
+		static uint64_t calculate_port_bits_per_second(XHCIController&, uint32_t port_id);
+
 	private:
 		static constexpr uint32_t m_transfer_ring_trb_count = PAGE_SIZE / sizeof(XHCI::TRB);