75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
#pragma once
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#include <glacier/container/array.h>
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#include <glacier/memory/unique_ptr.h>
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#include <glacier/status/error_or.h>
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#include <mammoth/proc/thread.h>
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#include <mammoth/util/memory_region.h>
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#include <yellowstone/yellowstone.yunq.client.h>
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#include "xhci/device_slot.h"
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#include "xhci/trb_ring.h"
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#include "xhci/xhci.h"
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class XhciDriver {
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public:
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static glcr::ErrorOr<glcr::UniquePtr<XhciDriver>> InitiateDriver(
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yellowstone::YellowstoneClient& yellowstone);
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XhciDriver(const XhciDriver&) = delete;
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XhciDriver(XhciDriver&&) = default;
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void DumpDebugInfo();
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void InterruptLoop();
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void IssueCommand(const XhciTrb& command);
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private:
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// MMIO Structures.
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mmth::OwnedMemoryRegion pci_region_;
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PciDeviceHeader* pci_device_header_;
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mmth::OwnedMemoryRegion mmio_regions_;
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volatile XhciCapabilities* capabilities_;
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volatile XhciOperational* operational_;
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// TODO: Extended Capabilities.
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volatile XhciRuntime* runtime_;
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volatile XhciDoorbells* doorbells_;
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// Host Memory Regions.
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TrbRingWriter command_ring_;
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mmth::OwnedMemoryRegion device_context_base_array_mem_;
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uint64_t* device_context_base_array_;
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mmth::OwnedMemoryRegion event_ring_segment_table_mem_;
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XhciEventRingSegmentTableEntry* event_ring_segment_table_;
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TrbRingReader event_ring_;
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Thread interrupt_thread_;
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glcr::Array<DeviceSlot> devices_;
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XhciDriver(mmth::OwnedMemoryRegion&& pci_space);
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glcr::ErrorCode ParseMmioStructures();
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glcr::ErrorCode FreeExistingMemoryStructures() { return glcr::OK; }
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glcr::ErrorCode ResetController();
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void StartInterruptThread();
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glcr::ErrorCode InitiateCommandRing();
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glcr::ErrorCode InitiateDeviceContextBaseArray();
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glcr::ErrorCode InitiateEventRingSegmentTable();
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glcr::ErrorCode InitiateDevices();
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glcr::ErrorCode NoOpCommand();
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void HandleCommandCompletion(const XhciTrb& command_completion_trb);
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void HandleTransferCompletion(const XhciTrb& transfer_event_trb);
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void InitializeSlot(uint8_t slot_index);
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};
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