MdeModulePkg/Bus/Pci/XhciPei/XhciReg.h - edk2 - Git at Google

 /** @file
 Private Header file for Usb Host Controller PEIM

 Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>

 This program and the accompanying materials
 are licensed and made available under the terms and conditions
 of the BSD License which accompanies this distribution.  The
 full text of the license may be found at
 http://opensource.org/licenses/bsd-license.php

 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

 **/

 #ifndef _EFI_PEI_XHCI_REG_H_
 #define _EFI_PEI_XHCI_REG_H_

 //
 // Capability registers offset
 //
 #define XHC_CAPLENGTH_OFFSET            0x00    // Capability register length offset
 #define XHC_HCIVERSION_OFFSET           0x02    // Interface Version Number 02-03h
 #define XHC_HCSPARAMS1_OFFSET           0x04    // Structural Parameters 1
 #define XHC_HCSPARAMS2_OFFSET           0x08    // Structural Parameters 2
 #define XHC_HCSPARAMS3_OFFSET           0x0c    // Structural Parameters 3
 #define XHC_HCCPARAMS_OFFSET            0x10    // Capability Parameters
 #define XHC_DBOFF_OFFSET                0x14    // Doorbell Offset
 #define XHC_RTSOFF_OFFSET               0x18    // Runtime Register Space Offset

 //
 // Operational registers offset
 //
 #define XHC_USBCMD_OFFSET               0x0000  // USB Command Register Offset
 #define XHC_USBSTS_OFFSET               0x0004  // USB Status Register Offset
 #define XHC_PAGESIZE_OFFSET             0x0008  // USB Page Size Register Offset
 #define XHC_DNCTRL_OFFSET               0x0014  // Device Notification Control Register Offset
 #define XHC_CRCR_OFFSET                 0x0018  // Command Ring Control Register Offset
 #define XHC_DCBAAP_OFFSET               0x0030  // Device Context Base Address Array Pointer Register Offset
 #define XHC_CONFIG_OFFSET               0x0038  // Configure Register Offset
 #define XHC_PORTSC_OFFSET               0x0400  // Port Status and Control Register Offset

 //
 // Runtime registers offset
 //
 #define XHC_MFINDEX_OFFSET              0x00    // Microframe Index Register Offset
 #define XHC_IMAN_OFFSET                 0x20    // Interrupter X Management Register Offset
 #define XHC_IMOD_OFFSET                 0x24    // Interrupter X Moderation Register Offset
 #define XHC_ERSTSZ_OFFSET               0x28    // Event Ring Segment Table Size Register Offset
 #define XHC_ERSTBA_OFFSET               0x30    // Event Ring Segment Table Base Address Register Offset
 #define XHC_ERDP_OFFSET                 0x38    // Event Ring Dequeue Pointer Register Offset

 //
 // Register Bit Definition
 //
 #define XHC_USBCMD_RUN                  BIT0    // Run/Stop
 #define XHC_USBCMD_RESET                BIT1    // Host Controller Reset
 #define XHC_USBCMD_INTE                 BIT2    // Interrupter Enable
 #define XHC_USBCMD_HSEE                 BIT3    // Host System Error Enable

 #define XHC_USBSTS_HALT                 BIT0    // Host Controller Halted
 #define XHC_USBSTS_HSE                  BIT2    // Host System Error
 #define XHC_USBSTS_EINT                 BIT3    // Event Interrupt
 #define XHC_USBSTS_PCD                  BIT4    // Port Change Detect
 #define XHC_USBSTS_SSS                  BIT8    // Save State Status
 #define XHC_USBSTS_RSS                  BIT9    // Restore State Status
 #define XHC_USBSTS_SRE                  BIT10   // Save/Restore Error
 #define XHC_USBSTS_CNR                  BIT11   // Host Controller Not Ready
 #define XHC_USBSTS_HCE                  BIT12   // Host Controller Error

 #define XHC_PAGESIZE_MASK               0xFFFF  // Page Size

 #define XHC_CRCR_RCS                    BIT0    // Ring Cycle State
 #define XHC_CRCR_CS                     BIT1    // Command Stop
 #define XHC_CRCR_CA                     BIT2    // Command Abort
 #define XHC_CRCR_CRR                    BIT3    // Command Ring Running

 #define XHC_CONFIG_MASK                 0xFF    // Max Device Slots Enabled

 #define XHC_PORTSC_CCS                  BIT0    // Current Connect Status
 #define XHC_PORTSC_PED                  BIT1    // Port Enabled/Disabled
 #define XHC_PORTSC_OCA                  BIT3    // Over-current Active
 #define XHC_PORTSC_RESET                BIT4    // Port Reset
 #define XHC_PORTSC_PLS                  (BIT5|BIT6|BIT7|BIT8)   // Port Link State
 #define XHC_PORTSC_PP                   BIT9    // Port Power
 #define XHC_PORTSC_PS                   (BIT10|BIT11|BIT12)     // Port Speed
 #define XHC_PORTSC_LWS                  BIT16   // Port Link State Write Strobe
 #define XHC_PORTSC_CSC                  BIT17   // Connect Status Change
 #define XHC_PORTSC_PEC                  BIT18   // Port Enabled/Disabled Change
 #define XHC_PORTSC_WRC                  BIT19   // Warm Port Reset Change
 #define XHC_PORTSC_OCC                  BIT20   // Over-Current Change
 #define XHC_PORTSC_PRC                  BIT21   // Port Reset Change
 #define XHC_PORTSC_PLC                  BIT22   // Port Link State Change
 #define XHC_PORTSC_CEC                  BIT23   // Port Config Error Change
 #define XHC_PORTSC_CAS                  BIT24   // Cold Attach Status

 #define XHC_HUB_PORTSC_CCS              BIT0    // Hub's Current Connect Status
 #define XHC_HUB_PORTSC_PED              BIT1    // Hub's Port Enabled/Disabled
 #define XHC_HUB_PORTSC_OCA              BIT3    // Hub's Over-current Active
 #define XHC_HUB_PORTSC_RESET            BIT4    // Hub's Port Reset
 #define XHC_HUB_PORTSC_PP               BIT9    // Hub's Port Power
 #define XHC_HUB_PORTSC_CSC              BIT16   // Hub's Connect Status Change
 #define XHC_HUB_PORTSC_PEC              BIT17   // Hub's Port Enabled/Disabled Change
 #define XHC_HUB_PORTSC_OCC              BIT19   // Hub's Over-Current Change
 #define XHC_HUB_PORTSC_PRC              BIT20   // Hub's Port Reset Change
 #define XHC_HUB_PORTSC_BHRC             BIT21   // Hub's Port Warm Reset Change

 #define XHC_IMAN_IP                     BIT0    // Interrupt Pending
 #define XHC_IMAN_IE                     BIT1    // Interrupt Enable

 #define XHC_IMODI_MASK                  0x0000FFFF  // Interrupt Moderation Interval
 #define XHC_IMODC_MASK                  0xFFFF0000  // Interrupt Moderation Counter


 #pragma pack (1)
 typedef struct {
   UINT8                 MaxSlots;       // Number of Device Slots
   UINT16                MaxIntrs:11;    // Number of Interrupters
   UINT16                Rsvd:5;
   UINT8                 MaxPorts;       // Number of Ports
 } HCSPARAMS1;

 //
 // Structural Parameters 1 Register Bitmap Definition
 //
 typedef union {
   UINT32                Dword;
   HCSPARAMS1            Data;
 } XHC_HCSPARAMS1;

 typedef struct {
   UINT32                Ist:4;          // Isochronous Scheduling Threshold
   UINT32                Erst:4;         // Event Ring Segment Table Max
   UINT32                Rsvd:13;
   UINT32                ScratchBufHi:5; // Max Scratchpad Buffers Hi
   UINT32                Spr:1;          // Scratchpad Restore
   UINT32                ScratchBufLo:5; // Max Scratchpad Buffers Lo
 } HCSPARAMS2;

 //
 // Structural Parameters 2 Register Bitmap Definition
 //
 typedef union {
   UINT32                Dword;
   HCSPARAMS2            Data;
 } XHC_HCSPARAMS2;

 typedef struct {
   UINT16                Ac64:1;        // 64-bit Addressing Capability
   UINT16                Bnc:1;         // BW Negotiation Capability
   UINT16                Csz:1;         // Context Size
   UINT16                Ppc:1;         // Port Power Control
   UINT16                Pind:1;        // Port Indicators
   UINT16                Lhrc:1;        // Light HC Reset Capability
   UINT16                Ltc:1;         // Latency Tolerance Messaging Capability
   UINT16                Nss:1;         // No Secondary SID Support
   UINT16                Pae:1;         // Parse All Event Data
   UINT16                Rsvd:3;
   UINT16                MaxPsaSize:4;  // Maximum Primary Stream Array Size
   UINT16                ExtCapReg;     // xHCI Extended Capabilities Pointer
 } HCCPARAMS;

 //
 // Capability Parameters Register Bitmap Definition
 //
 typedef union {
   UINT32                Dword;
   HCCPARAMS             Data;
 } XHC_HCCPARAMS;

 #pragma pack ()

 //
 // XHCi Data and Ctrl Structures
 //
 #pragma pack(1)
 typedef struct {
   UINT8                   Pi;
   UINT8                   SubClassCode;
   UINT8                   BaseCode;
 } USB_CLASSC;

 typedef struct {
   UINT8                     Length;
   UINT8                     DescType;
   UINT8                     NumPorts;
   UINT16                    HubCharacter;
   UINT8                     PwrOn2PwrGood;
   UINT8                     HubContrCurrent;
   UINT8                     Filler[16];
 } EFI_USB_HUB_DESCRIPTOR;
 #pragma pack()

 //
 //  Hub Class Feature Selector for Clear Port Feature Request
 //  It's the extension of hub class feature selector of USB 2.0 in USB 3.0 Spec.
 //  For more details, Please refer to USB 3.0 Spec Table 10-7.
 //
 typedef enum {
   Usb3PortBHPortReset          = 28,
   Usb3PortBHPortResetChange    = 29
 } XHC_PORT_FEATURE;

 //
 // Structure to map the hardware port states to the
 // UEFI's port states.
 //
 typedef struct {
   UINT32                  HwState;
   UINT16                  UefiState;
 } USB_PORT_STATE_MAP;

 //
 // Structure to map the hardware port states to feature selector for clear port feature request.
 //
 typedef struct {
   UINT32                  HwState;
   UINT16                  Selector;
 } USB_CLEAR_PORT_MAP;

 /**
   Read XHCI Operation register.

   @param Xhc            The XHCI device.
   @param Offset         The operation register offset.

   @retval the register content read.

 **/
 UINT32
 XhcPeiReadOpReg (
   IN  PEI_XHC_DEV       *Xhc,
   IN  UINT32            Offset
   );

 /**
   Write the data to the XHCI operation register.

   @param Xhc            The XHCI device.
   @param Offset         The operation register offset.
   @param Data           The data to write.

 **/
 VOID
 XhcPeiWriteOpReg (
   IN PEI_XHC_DEV        *Xhc,
   IN UINT32             Offset,
   IN UINT32             Data
   );

 /**
   Set one bit of the operational register while keeping other bits.

   @param  Xhc           The XHCI device.
   @param  Offset        The offset of the operational register.
   @param  Bit           The bit mask of the register to set.

 **/
 VOID
 XhcPeiSetOpRegBit (
   IN PEI_XHC_DEV        *Xhc,
   IN UINT32             Offset,
   IN UINT32             Bit
   );

 /**
   Clear one bit of the operational register while keeping other bits.

   @param  Xhc           The XHCI device.
   @param  Offset        The offset of the operational register.
   @param  Bit           The bit mask of the register to clear.

 **/
 VOID
 XhcPeiClearOpRegBit (
   IN PEI_XHC_DEV        *Xhc,
   IN UINT32             Offset,
   IN UINT32             Bit
   );

 /**
   Wait the operation register's bit as specified by Bit
   to be set (or clear).

   @param  Xhc           The XHCI device.
   @param  Offset        The offset of the operational register.
   @param  Bit           The bit of the register to wait for.
   @param  WaitToSet     Wait the bit to set or clear.
   @param  Timeout       The time to wait before abort (in microsecond, us).

   @retval EFI_SUCCESS   The bit successfully changed by host controller.
   @retval EFI_TIMEOUT   The time out occurred.

 **/
 EFI_STATUS
 XhcPeiWaitOpRegBit (
   IN PEI_XHC_DEV        *Xhc,
   IN UINT32             Offset,
   IN UINT32             Bit,
   IN BOOLEAN            WaitToSet,
   IN UINT32             Timeout
   );

 /**
   Read XHCI door bell register.

   @param  Xhc           The XHCI device.
   @param  Offset        The offset of the door bell register.

   @return The register content read

 **/
 UINT32
 XhcPeiReadDoorBellReg (
   IN  PEI_XHC_DEV       *Xhc,
   IN  UINT32            Offset
   );

 /**
   Write the data to the XHCI door bell register.

   @param  Xhc           The XHCI device.
   @param  Offset        The offset of the door bell register.
   @param  Data          The data to write.

 **/
 VOID
 XhcPeiWriteDoorBellReg (
   IN PEI_XHC_DEV        *Xhc,
   IN UINT32             Offset,
   IN UINT32             Data
   );

 /**
   Read XHCI runtime register.

   @param  Xhc           The XHCI device.
   @param  Offset        The offset of the runtime register.

   @return The register content read

 **/
 UINT32
 XhcPeiReadRuntimeReg (
   IN PEI_XHC_DEV        *Xhc,
   IN  UINT32            Offset
   );

 /**
   Write the data to the XHCI runtime register.

   @param  Xhc           The XHCI device.
   @param  Offset        The offset of the runtime register.
   @param  Data          The data to write.

 **/
 VOID
 XhcPeiWriteRuntimeReg (
   IN PEI_XHC_DEV        *Xhc,
   IN UINT32             Offset,
   IN UINT32             Data
   );

 /**
   Set one bit of the runtime register while keeping other bits.

   @param  Xhc           The XHCI device.
   @param  Offset        The offset of the runtime register.
   @param  Bit           The bit mask of the register to set.

 **/
 VOID
 XhcPeiSetRuntimeRegBit (
   IN PEI_XHC_DEV        *Xhc,
   IN UINT32             Offset,
   IN UINT32             Bit
   );

 /**
   Clear one bit of the runtime register while keeping other bits.

   @param  Xhc           The XHCI device.
   @param  Offset        The offset of the runtime register.
   @param  Bit           The bit mask of the register to set.

 **/
 VOID
 XhcPeiClearRuntimeRegBit (
   IN PEI_XHC_DEV        *Xhc,
   IN UINT32             Offset,
   IN UINT32             Bit
   );

 /**
   Check whether Xhc is halted.

   @param  Xhc           The XHCI device.

   @retval TRUE          The controller is halted.
   @retval FALSE         The controller isn't halted.

 **/
 BOOLEAN
 XhcPeiIsHalt (
   IN PEI_XHC_DEV        *Xhc
   );

 /**
   Check whether system error occurred.

   @param  Xhc           The XHCI device.

   @retval TRUE          System error happened.
   @retval FALSE         No system error.

 **/
 BOOLEAN
 XhcPeiIsSysError (
   IN PEI_XHC_DEV        *Xhc
   );

 /**
   Reset the host controller.

   @param  Xhc           The XHCI device.
   @param  Timeout       Time to wait before abort (in millisecond, ms).

   @retval EFI_TIMEOUT   The transfer failed due to time out.
   @retval Others        Failed to reset the host.

 **/
 EFI_STATUS
 XhcPeiResetHC (
   IN PEI_XHC_DEV        *Xhc,
   IN UINT32             Timeout
   );

 /**
   Halt the host controller.

   @param  Xhc           The XHCI device.
   @param  Timeout       Time to wait before abort.

   @retval EFI_TIMEOUT   Failed to halt the controller before Timeout.
   @retval EFI_SUCCESS   The XHCI is halt.

 **/
 EFI_STATUS
 XhcPeiHaltHC (
   IN PEI_XHC_DEV        *Xhc,
   IN UINT32             Timeout
   );

 /**
   Set the XHCI to run.

   @param  Xhc           The XHCI device.
   @param  Timeout       Time to wait before abort.

   @retval EFI_SUCCESS   The XHCI is running.
   @retval Others        Failed to set the XHCI to run.

 **/
 EFI_STATUS
 XhcPeiRunHC (
   IN PEI_XHC_DEV        *Xhc,
   IN UINT32             Timeout
   );

 #endif
	/** @file
	Private Header file for Usb Host Controller PEIM

	Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>

	This program and the accompanying materials
	are licensed and made available under the terms and conditions
	of the BSD License which accompanies this distribution. The
	full text of the license may be found at
	http://opensource.org/licenses/bsd-license.php

	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

	**/

	#ifndef _EFI_PEI_XHCI_REG_H_
	#define _EFI_PEI_XHCI_REG_H_

	//
	// Capability registers offset
	//
	#define XHC_CAPLENGTH_OFFSET 0x00 // Capability register length offset
	#define XHC_HCIVERSION_OFFSET 0x02 // Interface Version Number 02-03h
	#define XHC_HCSPARAMS1_OFFSET 0x04 // Structural Parameters 1
	#define XHC_HCSPARAMS2_OFFSET 0x08 // Structural Parameters 2
	#define XHC_HCSPARAMS3_OFFSET 0x0c // Structural Parameters 3
	#define XHC_HCCPARAMS_OFFSET 0x10 // Capability Parameters
	#define XHC_DBOFF_OFFSET 0x14 // Doorbell Offset
	#define XHC_RTSOFF_OFFSET 0x18 // Runtime Register Space Offset

	//
	// Operational registers offset
	//
	#define XHC_USBCMD_OFFSET 0x0000 // USB Command Register Offset
	#define XHC_USBSTS_OFFSET 0x0004 // USB Status Register Offset
	#define XHC_PAGESIZE_OFFSET 0x0008 // USB Page Size Register Offset
	#define XHC_DNCTRL_OFFSET 0x0014 // Device Notification Control Register Offset
	#define XHC_CRCR_OFFSET 0x0018 // Command Ring Control Register Offset
	#define XHC_DCBAAP_OFFSET 0x0030 // Device Context Base Address Array Pointer Register Offset
	#define XHC_CONFIG_OFFSET 0x0038 // Configure Register Offset
	#define XHC_PORTSC_OFFSET 0x0400 // Port Status and Control Register Offset

	//
	// Runtime registers offset
	//
	#define XHC_MFINDEX_OFFSET 0x00 // Microframe Index Register Offset
	#define XHC_IMAN_OFFSET 0x20 // Interrupter X Management Register Offset
	#define XHC_IMOD_OFFSET 0x24 // Interrupter X Moderation Register Offset
	#define XHC_ERSTSZ_OFFSET 0x28 // Event Ring Segment Table Size Register Offset
	#define XHC_ERSTBA_OFFSET 0x30 // Event Ring Segment Table Base Address Register Offset
	#define XHC_ERDP_OFFSET 0x38 // Event Ring Dequeue Pointer Register Offset

	//
	// Register Bit Definition
	//
	#define XHC_USBCMD_RUN BIT0 // Run/Stop
	#define XHC_USBCMD_RESET BIT1 // Host Controller Reset
	#define XHC_USBCMD_INTE BIT2 // Interrupter Enable
	#define XHC_USBCMD_HSEE BIT3 // Host System Error Enable

	#define XHC_USBSTS_HALT BIT0 // Host Controller Halted
	#define XHC_USBSTS_HSE BIT2 // Host System Error
	#define XHC_USBSTS_EINT BIT3 // Event Interrupt
	#define XHC_USBSTS_PCD BIT4 // Port Change Detect
	#define XHC_USBSTS_SSS BIT8 // Save State Status
	#define XHC_USBSTS_RSS BIT9 // Restore State Status
	#define XHC_USBSTS_SRE BIT10 // Save/Restore Error
	#define XHC_USBSTS_CNR BIT11 // Host Controller Not Ready
	#define XHC_USBSTS_HCE BIT12 // Host Controller Error

	#define XHC_PAGESIZE_MASK 0xFFFF // Page Size

	#define XHC_CRCR_RCS BIT0 // Ring Cycle State
	#define XHC_CRCR_CS BIT1 // Command Stop
	#define XHC_CRCR_CA BIT2 // Command Abort
	#define XHC_CRCR_CRR BIT3 // Command Ring Running

	#define XHC_CONFIG_MASK 0xFF // Max Device Slots Enabled

	#define XHC_PORTSC_CCS BIT0 // Current Connect Status
	#define XHC_PORTSC_PED BIT1 // Port Enabled/Disabled
	#define XHC_PORTSC_OCA BIT3 // Over-current Active
	#define XHC_PORTSC_RESET BIT4 // Port Reset
	#define XHC_PORTSC_PLS (BIT5\|BIT6\|BIT7\|BIT8) // Port Link State
	#define XHC_PORTSC_PP BIT9 // Port Power
	#define XHC_PORTSC_PS (BIT10\|BIT11\|BIT12) // Port Speed
	#define XHC_PORTSC_LWS BIT16 // Port Link State Write Strobe
	#define XHC_PORTSC_CSC BIT17 // Connect Status Change
	#define XHC_PORTSC_PEC BIT18 // Port Enabled/Disabled Change
	#define XHC_PORTSC_WRC BIT19 // Warm Port Reset Change
	#define XHC_PORTSC_OCC BIT20 // Over-Current Change
	#define XHC_PORTSC_PRC BIT21 // Port Reset Change
	#define XHC_PORTSC_PLC BIT22 // Port Link State Change
	#define XHC_PORTSC_CEC BIT23 // Port Config Error Change
	#define XHC_PORTSC_CAS BIT24 // Cold Attach Status

	#define XHC_HUB_PORTSC_CCS BIT0 // Hub's Current Connect Status
	#define XHC_HUB_PORTSC_PED BIT1 // Hub's Port Enabled/Disabled
	#define XHC_HUB_PORTSC_OCA BIT3 // Hub's Over-current Active
	#define XHC_HUB_PORTSC_RESET BIT4 // Hub's Port Reset
	#define XHC_HUB_PORTSC_PP BIT9 // Hub's Port Power
	#define XHC_HUB_PORTSC_CSC BIT16 // Hub's Connect Status Change
	#define XHC_HUB_PORTSC_PEC BIT17 // Hub's Port Enabled/Disabled Change
	#define XHC_HUB_PORTSC_OCC BIT19 // Hub's Over-Current Change
	#define XHC_HUB_PORTSC_PRC BIT20 // Hub's Port Reset Change
	#define XHC_HUB_PORTSC_BHRC BIT21 // Hub's Port Warm Reset Change

	#define XHC_IMAN_IP BIT0 // Interrupt Pending
	#define XHC_IMAN_IE BIT1 // Interrupt Enable

	#define XHC_IMODI_MASK 0x0000FFFF // Interrupt Moderation Interval
	#define XHC_IMODC_MASK 0xFFFF0000 // Interrupt Moderation Counter


	#pragma pack (1)
	typedef struct {
	UINT8 MaxSlots; // Number of Device Slots
	UINT16 MaxIntrs:11; // Number of Interrupters
	UINT16 Rsvd:5;
	UINT8 MaxPorts; // Number of Ports
	} HCSPARAMS1;

	//
	// Structural Parameters 1 Register Bitmap Definition
	//
	typedef union {
	UINT32 Dword;
	HCSPARAMS1 Data;
	} XHC_HCSPARAMS1;

	typedef struct {
	UINT32 Ist:4; // Isochronous Scheduling Threshold
	UINT32 Erst:4; // Event Ring Segment Table Max
	UINT32 Rsvd:13;
	UINT32 ScratchBufHi:5; // Max Scratchpad Buffers Hi
	UINT32 Spr:1; // Scratchpad Restore
	UINT32 ScratchBufLo:5; // Max Scratchpad Buffers Lo
	} HCSPARAMS2;

	//
	// Structural Parameters 2 Register Bitmap Definition
	//
	typedef union {
	UINT32 Dword;
	HCSPARAMS2 Data;
	} XHC_HCSPARAMS2;

	typedef struct {
	UINT16 Ac64:1; // 64-bit Addressing Capability
	UINT16 Bnc:1; // BW Negotiation Capability
	UINT16 Csz:1; // Context Size
	UINT16 Ppc:1; // Port Power Control
	UINT16 Pind:1; // Port Indicators
	UINT16 Lhrc:1; // Light HC Reset Capability
	UINT16 Ltc:1; // Latency Tolerance Messaging Capability
	UINT16 Nss:1; // No Secondary SID Support
	UINT16 Pae:1; // Parse All Event Data
	UINT16 Rsvd:3;
	UINT16 MaxPsaSize:4; // Maximum Primary Stream Array Size
	UINT16 ExtCapReg; // xHCI Extended Capabilities Pointer
	} HCCPARAMS;

	//
	// Capability Parameters Register Bitmap Definition
	//
	typedef union {
	UINT32 Dword;
	HCCPARAMS Data;
	} XHC_HCCPARAMS;

	#pragma pack ()

	//
	// XHCi Data and Ctrl Structures
	//
	#pragma pack(1)
	typedef struct {
	UINT8 Pi;
	UINT8 SubClassCode;
	UINT8 BaseCode;
	} USB_CLASSC;

	typedef struct {
	UINT8 Length;
	UINT8 DescType;
	UINT8 NumPorts;
	UINT16 HubCharacter;
	UINT8 PwrOn2PwrGood;
	UINT8 HubContrCurrent;
	UINT8 Filler[16];
	} EFI_USB_HUB_DESCRIPTOR;
	#pragma pack()

	//
	// Hub Class Feature Selector for Clear Port Feature Request
	// It's the extension of hub class feature selector of USB 2.0 in USB 3.0 Spec.
	// For more details, Please refer to USB 3.0 Spec Table 10-7.
	//
	typedef enum {
	Usb3PortBHPortReset = 28,
	Usb3PortBHPortResetChange = 29
	} XHC_PORT_FEATURE;

	//
	// Structure to map the hardware port states to the
	// UEFI's port states.
	//
	typedef struct {
	UINT32 HwState;
	UINT16 UefiState;
	} USB_PORT_STATE_MAP;

	//
	// Structure to map the hardware port states to feature selector for clear port feature request.
	//
	typedef struct {
	UINT32 HwState;
	UINT16 Selector;
	} USB_CLEAR_PORT_MAP;

	/**
	Read XHCI Operation register.

	@param Xhc The XHCI device.
	@param Offset The operation register offset.

	@retval the register content read.

	**/
	UINT32
	XhcPeiReadOpReg (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Offset
	);

	/**
	Write the data to the XHCI operation register.

	@param Xhc The XHCI device.
	@param Offset The operation register offset.
	@param Data The data to write.

	**/
	VOID
	XhcPeiWriteOpReg (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Offset,
	IN UINT32 Data
	);

	/**
	Set one bit of the operational register while keeping other bits.

	@param Xhc The XHCI device.
	@param Offset The offset of the operational register.
	@param Bit The bit mask of the register to set.

	**/
	VOID
	XhcPeiSetOpRegBit (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Offset,
	IN UINT32 Bit
	);

	/**
	Clear one bit of the operational register while keeping other bits.

	@param Xhc The XHCI device.
	@param Offset The offset of the operational register.
	@param Bit The bit mask of the register to clear.

	**/
	VOID
	XhcPeiClearOpRegBit (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Offset,
	IN UINT32 Bit
	);

	/**
	Wait the operation register's bit as specified by Bit
	to be set (or clear).

	@param Xhc The XHCI device.
	@param Offset The offset of the operational register.
	@param Bit The bit of the register to wait for.
	@param WaitToSet Wait the bit to set or clear.
	@param Timeout The time to wait before abort (in microsecond, us).

	@retval EFI_SUCCESS The bit successfully changed by host controller.
	@retval EFI_TIMEOUT The time out occurred.

	**/
	EFI_STATUS
	XhcPeiWaitOpRegBit (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Offset,
	IN UINT32 Bit,
	IN BOOLEAN WaitToSet,
	IN UINT32 Timeout
	);

	/**
	Read XHCI door bell register.

	@param Xhc The XHCI device.
	@param Offset The offset of the door bell register.

	@return The register content read

	**/
	UINT32
	XhcPeiReadDoorBellReg (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Offset
	);

	/**
	Write the data to the XHCI door bell register.

	@param Xhc The XHCI device.
	@param Offset The offset of the door bell register.
	@param Data The data to write.

	**/
	VOID
	XhcPeiWriteDoorBellReg (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Offset,
	IN UINT32 Data
	);

	/**
	Read XHCI runtime register.

	@param Xhc The XHCI device.
	@param Offset The offset of the runtime register.

	@return The register content read

	**/
	UINT32
	XhcPeiReadRuntimeReg (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Offset
	);

	/**
	Write the data to the XHCI runtime register.

	@param Xhc The XHCI device.
	@param Offset The offset of the runtime register.
	@param Data The data to write.

	**/
	VOID
	XhcPeiWriteRuntimeReg (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Offset,
	IN UINT32 Data
	);

	/**
	Set one bit of the runtime register while keeping other bits.

	@param Xhc The XHCI device.
	@param Offset The offset of the runtime register.
	@param Bit The bit mask of the register to set.

	**/
	VOID
	XhcPeiSetRuntimeRegBit (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Offset,
	IN UINT32 Bit
	);

	/**
	Clear one bit of the runtime register while keeping other bits.

	@param Xhc The XHCI device.
	@param Offset The offset of the runtime register.
	@param Bit The bit mask of the register to set.

	**/
	VOID
	XhcPeiClearRuntimeRegBit (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Offset,
	IN UINT32 Bit
	);

	/**
	Check whether Xhc is halted.

	@param Xhc The XHCI device.

	@retval TRUE The controller is halted.
	@retval FALSE The controller isn't halted.

	**/
	BOOLEAN
	XhcPeiIsHalt (
	IN PEI_XHC_DEV *Xhc
	);

	/**
	Check whether system error occurred.

	@param Xhc The XHCI device.

	@retval TRUE System error happened.
	@retval FALSE No system error.

	**/
	BOOLEAN
	XhcPeiIsSysError (
	IN PEI_XHC_DEV *Xhc
	);

	/**
	Reset the host controller.

	@param Xhc The XHCI device.
	@param Timeout Time to wait before abort (in millisecond, ms).

	@retval EFI_TIMEOUT The transfer failed due to time out.
	@retval Others Failed to reset the host.

	**/
	EFI_STATUS
	XhcPeiResetHC (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Timeout
	);

	/**
	Halt the host controller.

	@param Xhc The XHCI device.
	@param Timeout Time to wait before abort.

	@retval EFI_TIMEOUT Failed to halt the controller before Timeout.
	@retval EFI_SUCCESS The XHCI is halt.

	**/
	EFI_STATUS
	XhcPeiHaltHC (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Timeout
	);

	/**
	Set the XHCI to run.

	@param Xhc The XHCI device.
	@param Timeout Time to wait before abort.

	@retval EFI_SUCCESS The XHCI is running.
	@retval Others Failed to set the XHCI to run.

	**/
	EFI_STATUS
	XhcPeiRunHC (
	IN PEI_XHC_DEV *Xhc,
	IN UINT32 Timeout
	);

	#endif