[Voyageurs] Send AddressDevice Command to move port to 'Addressed' State.

sys/voyageurs/xhci/device_slot.cpp

@@ -0,0 +1,47 @@
+#include "xhci/device_slot.h"
+
+#include "xhci/trb.h"
+
+void DeviceSlot::EnableAndInitializeDataStructures(uint8_t slot_index,
+                                                   uint64_t* output_context) {
+  enabled_ = true;
+  slot_index_ = slot_index;
+
+  context_memory_ =
+      mmth::OwnedMemoryRegion::ContiguousPhysical(0x1000, &context_phys_);
+
+  device_context_ =
+      reinterpret_cast<XhciDeviceContext*>(context_memory_.vaddr());
+  *output_context = context_phys_;
+  input_context_ = reinterpret_cast<XhciInputContext*>(context_memory_.vaddr() +
+                                                       kInputSlotContextOffset);
+
+  control_endpoint_transfer_trb_ = glcr::MakeUnique<TrbRingWriter>();
+}
+
+XhciTrb DeviceSlot::CreateAddressDeviceCommand(uint8_t root_port,
+                                               uint32_t route_string,
+                                               uint16_t max_packet_size) {
+  // Initialize Slot Context and Endpoint 0 Context.
+  input_context_->input.add_contexts = 0x3;
+  // Set context_entries to 1. XHCI 4.3.3
+  input_context_->slot_context.route_speed_entries = (0x1 << 27) | route_string;
+  input_context_->slot_context.latency_port_number = root_port << 16;
+
+  // Initialize Control Endpoint.
+  input_context_->endpoint_contexts[0].state = 0;
+  constexpr uint16_t kCerr = 0x3 << 1;
+  constexpr uint16_t kTypeControl = 0x4 << 3;
+  input_context_->endpoint_contexts[0].error_and_type =
+      kCerr | kTypeControl | (max_packet_size << 16);
+
+  input_context_->endpoint_contexts[0].tr_dequeue_ptr =
+      control_endpoint_transfer_trb_->PhysicalAddress() | 0x1;
+
+  return ::CreateAddressDeviceCommand(context_phys_ + kInputSlotContextOffset,
+                                      slot_index_);
+}
+
+uint8_t DeviceSlot::State() {
+  return device_context_->slot_context.address_and_state >> 27;
+}