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// SPDX-License-Identifier: Apache-2.0
// Copyright 2024-2026, Amlal El Mahrouss (amlal@nekernel.org)
// Licensed under the Apache License, Version 2.0 (see LICENSE file)
// Official repository: https://github.com/ne-foss-org/nekernel
#ifndef XHCI_XHCI_H
#define XHCI_XHCI_H
#include <NeKit/Config.h>
#define kUSBCommand (UInt16) 0x0
#define kUSBStatus (UInt16) 0x2
#define kUSBInterruptEnable (UInt16) 0x4
#define kUSBFrameNum (UInt16) 0x6
#define kUSBFrameListBaseAddress (UInt16) 0x8
#define kUSBFrameModifyStart (UInt16) 0xC
#define kUSBPort1StatusCtrl (UInt16) 0x10
#define kUSBPort2StatusCtrl (UInt16) 0x12
namespace Kernel {
typedef struct USBCommandRegister final {
UInt8 mReserved[8]; // Reserved
UInt8 mMaxPacket; // 0 = Max packet size 32 bits 1 = Max packet size 64 bits
UInt8 mConfigure;
UInt8 mSoftwareDebug;
UInt8 mGlobalResume;
UInt8 mGlobalSuspend;
UInt8 mHostCtrlReset;
UInt8 mRun; // 1 = Controller execute frame list entries
} USBCommandRegister;
typedef struct USBStatusRegister final {
UInt8 mReserved[8]; // Reserved
UInt8 mHalted; // 1 = bit 0 in CMD is zero 0 = bit 0 in CMD is 1
UInt8 mProcessError;
UInt8 mSystemError;
UInt8 mResumeDetected;
UInt8 mErrorInterrupt;
UInt8 mInterrupt;
} USBStatusRegister;
typedef struct USBInterruptEnableRegister final {
UInt8 mReserved[4]; // Reserved
UInt8 mShortPacket; // 1=Enable interrupt 0=Disable interrupt
UInt8 mComplete; // 1=Enable interrupt 0=Disable interrupt
UInt8 mResume; // 1=Enable interrupt 0=Disable interrupt
UInt8 mTimeoutCRC; // 1=Enable interrupt 0=Disable interrupt
} USBInterruptEnableRegister;
/*
Some terminology:
Frame Number: Number of processed entry of the Frame List.
Frame List Base Address:
32-bit physical adress of Frame List. Remember that first 12 bytes are
always 0. The Frame List must contain 1024 entries.
*/
} // namespace Kernel
#endif
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