/** @file
  This file contains the definination for host controller 
  register operation routines.

Copyright(c) 2013 Intel Corporation. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of Intel Corporation nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

**/



#ifndef   _OHCI_REG_H
#define   _OHCI_REG_H

#define   HC_STATE_RESET         0x0
#define   HC_STATE_RESUME        0x1
#define   HC_STATE_OPERATIONAL   0x2
#define   HC_STATE_SUSPEND       0x3

#define   PERIODIC_ENABLE               0x01
#define   ISOCHRONOUS_ENABLE            0x02
#define   CONTROL_ENABLE                0x04
#define   BULK_ENABLE                   0x08
#define   CONTROL_BULK_RATIO            0x10

#define   HC_FUNCTIONAL_STATE    0x20
#define   INTERRUPT_ROUTING      0x40

#define   HC_RESET               0x01
#define   CONTROL_LIST_FILLED    0x02
#define   BULK_LIST_FILLED       0x04
#define   CHANGE_OWNER_REQUEST   0x08

#define   SCHEDULE_OVERRUN_COUNT 0x10

#define   SCHEDULE_OVERRUN       0x00001
#define   WRITEBACK_DONE_HEAD    0x00002
#define   START_OF_FRAME         0x00004
#define   RESUME_DETECT          0x00008
#define   UNRECOVERABLE_ERROR    0x00010
#define   FRAME_NUMBER_OVERFLOW  0x00020
#define   ROOTHUB_STATUS_CHANGE  0x00040
#define   OWNERSHIP_CHANGE       0x00080

#define   MASTER_INTERRUPT       0x00400

#define   CONTROL_HEAD           0x001
#define   BULK_HEAD              0x002
#define   DONE_HEAD              0x004

#define   Hc_HCCA                0x001
#define   Hc_PERIODIC_CURRENT    0x002
#define   Hc_CONTOL_HEAD         0x004
#define   Hc_CONTROL_CURRENT_PTR 0x008
#define   Hc_BULK_HEAD           0x010
#define   Hc_BULK_CURRENT_PTR    0x020
#define   Hc_DONE_HEAD           0x040

#define   FRAME_INTERVAL         0x008
#define   FS_LARGEST_DATA_PACKET 0x010
#define   FRMINT_TOGGLE          0x020
#define   FRAME_REMAINING        0x040
#define   FRAME_REMAIN_TOGGLE    0x080

#define   RH_DESC_A              0x00001
#define   RH_DESC_B              0x00002
#define   RH_NUM_DS_PORTS        0x00004
#define   RH_NO_PSWITCH          0x00008
#define   RH_PSWITCH_MODE        0x00010
#define   RH_DEVICE_TYPE         0x00020
#define   RH_OC_PROT_MODE        0x00040
#define   RH_NOC_PROT            0x00080
#define   RH_POTPGT              0x00100
#define   RH_NO_POTPGT           0x00200
#define   RH_DEV_REMOVABLE       0x00400
#define   RH_PORT_PWR_CTRL_MASK  0x00800

#define   RH_LOCAL_PSTAT         0x00001
#define   RH_OC_ID               0x00002
#define   RH_REMOTE_WK_ENABLE    0x00004
#define   RH_LOCAL_PSTAT_CHANGE  0x00008
#define   RH_OC_ID_CHANGE        0x00010
#define   RH_CLR_RMT_WK_ENABLE   0x00020

#define   RH_CLEAR_PORT_ENABLE        0x0001
#define   RH_SET_PORT_ENABLE          0x0002
#define   RH_SET_PORT_SUSPEND         0x0004
#define   RH_CLEAR_SUSPEND_STATUS     0x0008
#define   RH_SET_PORT_RESET           0x0010
#define   RH_SET_PORT_POWER           0x0020
#define   RH_CLEAR_PORT_POWER         0x0040
#define   RH_CONNECT_STATUS_CHANGE    0x10000
#define   RH_PORT_ENABLE_STAT_CHANGE  0x20000
#define   RH_PORT_SUSPEND_STAT_CHANGE 0x40000
#define   RH_OC_INDICATOR_CHANGE      0x80000
#define   RH_PORT_RESET_STAT_CHANGE   0x100000

#define   RH_CURR_CONNECT_STAT        0x0001
#define   RH_PORT_ENABLE_STAT         0x0002
#define   RH_PORT_SUSPEND_STAT        0x0004
#define   RH_PORT_OC_INDICATOR        0x0008
#define   RH_PORT_RESET_STAT          0x0010
#define   RH_PORT_POWER_STAT          0x0020
#define   RH_LSDEVICE_ATTACHED        0x0040

#define   RESET_SYSTEM_BUS            (1 << 0)
#define   RESET_HOST_CONTROLLER       (1 << 1)
#define   RESET_CLOCK_GENERATION      (1 << 2)
#define   RESET_SSE_GLOBAL            (1 << 5)
#define   RESET_PSPL                  (1 << 6)
#define   RESET_PCPL                  (1 << 7)
#define   RESET_SSEP1                 (1 << 9)
#define   RESET_SSEP2                 (1 << 10)
#define   RESET_SSEP3                 (1 << 11)

#define ONE_SECOND                      1000000
#define ONE_MILLI_SEC                   1000
#define MAX_BYTES_PER_TD                0x1000
#define MAX_RETRY_TIMES                 100
#define PORT_NUMBER_ON_MAINSTONE2       1


//
// Operational Register Offsets
//

//
// Command & Status Registers Offsets 
//
#define HC_REVISION             0x00
#define HC_CONTROL              0x04
#define HC_COMMAND_STATUS       0x08
#define HC_INTERRUPT_STATUS     0x0C
#define HC_INTERRUPT_ENABLE     0x10
#define HC_INTERRUPT_DISABLE    0x14

//
// Memory Pointer Offsets         
//
#define HC_HCCA                 0x18
#define HC_PERIODIC_CURRENT     0x1C
#define HC_CONTROL_HEAD         0x20
#define HC_CONTROL_CURRENT_PTR  0x24
#define HC_BULK_HEAD            0x28
#define HC_BULK_CURRENT_PTR     0x2C
#define HC_DONE_HEAD            0x30

//
// Frame Register Offsets         
//
#define HC_FRM_INTERVAL         0x34
#define HC_FRM_REMAINING        0x38
#define HC_FRM_NUMBER           0x3C
#define HC_PERIODIC_START       0x40
#define HC_LS_THREASHOLD        0x44

//
// Root Hub Register Offsets      
//
#define HC_RH_DESC_A            0x48
#define HC_RH_DESC_B            0x4C
#define HC_RH_STATUS            0x50
#define HC_RH_PORT_STATUS       0x54

#define USBHOST_OFFSET_UHCHR         0x64         // Usb Host reset register

#define OHC_BAR_INDEX               0  

//
// Usb Host controller register offset
//
#define USBHOST_OFFSET_UHCREV        0x0          // Usb Host revision register
#define USBHOST_OFFSET_UHCHCON       0x4          // Usb Host control register
#define USBHOST_OFFSET_UHCCOMS       0x8          // Usb Host Command Status register
#define USBHOST_OFFSET_UHCINTS       0xC          // Usb Host Interrupt Status register
#define USBHOST_OFFSET_UHCINTE       0x10         // Usb Host Interrupt Enable register
#define USBHOST_OFFSET_UHCINTD       0x14         // Usb Host Interrupt Disable register
#define USBHOST_OFFSET_UHCHCCA       0x18         // Usb Host Controller Communication Area
#define USBHOST_OFFSET_UHCPCED       0x1C         // Usb Host Period Current Endpoint Descriptor
#define USBHOST_OFFSET_UHCCHED       0x20         // Usb Host Control Head Endpoint Descriptor
#define USBHOST_OFFSET_UHCCCED       0x24         // Usb Host Control Current Endpoint Descriptor
#define USBHOST_OFFSET_UHCBHED       0x28         // Usb Host Bulk Head Endpoint Descriptor
#define USBHOST_OFFSET_UHCBCED       0x2C         // Usb Host Bulk Current Endpoint Descriptor
#define USBHOST_OFFSET_UHCDHEAD      0x30         // Usb Host Done Head register
#define USBHOST_OFFSET_UHCFMI        0x34         // Usb Host Frame Interval register
#define USBHOST_OFFSET_UHCFMR        0x38         // Usb Host Frame Remaining register
#define USBHOST_OFFSET_UHCFMN        0x3C         // Usb Host Frame Number register
#define USBHOST_OFFSET_UHCPERS       0x40         // Usb Host Periodic Start register
#define USBHOST_OFFSET_UHCLST        0x44         // Usb Host Low-Speed Threshold register
#define USBHOST_OFFSET_UHCRHDA       0x48         // Usb Host Root Hub Descriptor A register
#define USBHOST_OFFSET_UHCRHDB       0x4C         // Usb Host Root Hub Descriptor B register
#define USBHOST_OFFSET_UHCRHS        0x50         // Usb Host Root Hub Status register
#define USBHOST_OFFSET_UHCRHPS1      0x54         // Usb Host Root Hub Port Status 1 register

//
// Usb Host controller register bit fields
//
#pragma pack(1)

typedef struct {
  UINT8                   ProgInterface;
  UINT8                   SubClassCode;
  UINT8                   BaseCode;
} USB_CLASSC;

typedef struct {
    UINT32 Revision:8;
    UINT32 Rsvd:24;
} HcREVISION;

typedef struct {
    UINT32 ControlBulkRatio:2;
    UINT32 PeriodicEnable:1;
    UINT32 IsochronousEnable:1;
    UINT32 ControlEnable:1;
    UINT32 BulkEnable:1;
    UINT32 FunctionalState:2;
    UINT32 InterruptRouting:1;
    UINT32 RemoteWakeup:1;
    UINT32 RemoteWakeupEnable:1;
    UINT32 Reserved:21;
} HcCONTROL;

typedef struct {
    UINT32 HcReset:1;
    UINT32 ControlListFilled:1;
    UINT32 BulkListFilled:1;
    UINT32 ChangeOwnerRequest:1;
    UINT32 Reserved1:12;
    UINT32 ScheduleOverrunCount:2;
    UINT32 Reserved:14;
} HcCOMMAND_STATUS;

typedef struct {
    UINT32 SchedulingOverrun:1;
    UINT32 WriteBackDone:1;
    UINT32 Sof:1;
    UINT32 ResumeDetected:1;
    UINT32 UnrecoverableError:1;
    UINT32 FrameNumOverflow:1;
    UINT32 RHStatusChange:1;
    UINT32 Reserved1:23;
    UINT32 OwnerChange:1;
    UINT32 Reserved2:1;
} HcINTERRUPT_STATUS;

typedef struct {
    UINT32 SchedulingOverrunInt:1;
    UINT32 WriteBackDoneInt:1;
    UINT32 SofInt:1;
    UINT32 ResumeDetectedInt:1;
    UINT32 UnrecoverableErrorInt:1;
    UINT32 FrameNumOverflowInt:1;
    UINT32 RHStatusChangeInt:1;
    UINT32 Reserved:23;
    UINT32 OwnerChangedInt:1;
    UINT32 MasterInterruptEnable:1;
} HcINTERRUPT_CONTROL;

typedef struct {
    UINT32 Rerserved:8;
    UINT32 Hcca:24;
} HcHCCA;

typedef struct {
    UINT32 Reserved:4;
    UINT32 MemoryPtr:28;
} HcMEMORY_PTR;

typedef struct {
    UINT32 FrameInterval:14;
    UINT32 Reserved:2;
    UINT32 FSMaxDataPacket:15;
    UINT32 FrmIntervalToggle:1;
} HcFRM_INTERVAL;

typedef struct {
    UINT32 FrameRemaining:14;
    UINT32 Reserved:17;
    UINT32 FrameRemainingToggle:1;
} HcFRAME_REMAINING;

typedef struct {
    UINT32 FrameNumber:16;
    UINT32 Reserved:16;
} HcFRAME_NUMBER;

typedef struct {
    UINT32 PeriodicStart:14;
    UINT32 Reserved:18;
} HcPERIODIC_START;

typedef struct {
    UINT32 LsThreshold:12;
    UINT32 Reserved:20;
} HcLS_THRESHOLD;

typedef struct {
    UINT32 NumDownStrmPorts:8;
    UINT32 PowerSwitchMode:1;
    UINT32 NoPowerSwitch:1;
    UINT32 DeviceType:1;
    UINT32 OverCurrentProtMode:1;
    UINT32 NoOverCurrentProtMode:1;
    UINT32 Reserved:11;
    UINT32 PowerOnToPowerGoodTime:8;
} HcRH_DESC_A;

typedef struct {
    UINT32 DeviceRemovable:16;
    UINT32 PortPowerControlMask:16;
} HcRH_DESC_B;

typedef struct {
    UINT32 LocalPowerStat:1;
    UINT32 OverCurrentIndicator:1;
    UINT32 Reserved1:13;
    UINT32 DevRemoteWakeupEnable:1;
    UINT32 LocalPowerStatChange:1;
    UINT32 OverCurrentIndicatorChange:1;
    UINT32 Reserved2:13;
    UINT32 ClearRemoteWakeupEnable:1;
} HcRH_STATUS;

typedef struct {
    UINT32 CurrentConnectStat:1;
    UINT32 EnableStat:1;
    UINT32 SuspendStat:1;
    UINT32 OCIndicator:1;
    UINT32 ResetStat:1;
    UINT32 Reserved1:3;
    UINT32 PowerStat:1;
    UINT32 LsDeviceAttached:1;
    UINT32 Reserved2:6;
    UINT32 ConnectStatChange:1;
    UINT32 EnableStatChange:1;
    UINT32 SuspendStatChange:1;
    UINT32 OCIndicatorChange:1;
    UINT32 ResetStatChange:1;
    UINT32 Reserved3:11;
} HcRHPORT_STATUS;

typedef struct {
    UINT32 FSBIR:1;
    UINT32 FHR:1;
    UINT32 CGR:1;
    UINT32 SSDC:1;
    UINT32 UIT:1;
    UINT32 SSE:1;
    UINT32 PSPL:1;
    UINT32 PCPL:1;
    UINT32 Reserved0:1;
    UINT32 SSEP1:1;
    UINT32 SSEP2:1;
    UINT32 SSEP3:1;
    UINT32 Reserved1:20;
} HcRESET;


#pragma pack()

//
// Func List
//


/**

  Get OHCI operational reg value

  @param  PciIo                 PciIo protocol instance
  @param  Offset                Offset of the operational reg

  @retval                       Value of the register

**/
UINT32
OhciGetOperationalReg (
  IN EFI_PCI_IO_PROTOCOL  *PciIo,
  IN UINT32               Offset
  );

/**

  Set OHCI operational reg value

  @param  PciIo                  PCI Bus Io protocol instance
  @param  Offset                 Offset of the operational reg
  @param  Value                  Value to set

  @retval EFI_SUCCESS            Value set to the reg

**/


EFI_STATUS
OhciSetOperationalReg (
  IN EFI_PCI_IO_PROTOCOL  *PciIo,
  IN UINT32               Offset,
  IN VOID                 *Value
  );


/**

  Get HcRevision reg value

  @param  PciIo                 PCI Bus Io protocol instance

  @retval                       Value of the register

**/


UINT32
OhciGetHcRevision (
  IN EFI_PCI_IO_PROTOCOL  *PciIo
  );

/**

  Set HcReset reg value

  @param  Ohc                   UHC private data
  @param  Field                 Field to set
  @param  Value                 Value to set

  @retval EFI_SUCCESS           Value set

**/

EFI_STATUS
OhciSetHcReset (
  IN USB_OHCI_HC_DEV            *Ohc,
  IN UINT32                     Field,
  IN UINT32                     Value
  );
/**

  Get specific field of HcReset reg value

  @param  Ohc                   UHC private data
  @param  Field                 Field to get

  @retval                       Value of the field

**/

UINT32
OhciGetHcReset (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINT32               Field
  );
/**

  Set HcControl reg value

  @param  Ohc                   UHC private data
  @param  Field                 Field to set
  @param  Value                 Value to set

  @retval  EFI_SUCCESS          Value set

**/

EFI_STATUS
OhciSetHcControl (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                Field,
  IN UINT32               Value
  );


/**

  Get specific field of HcControl reg value

  @param  Ohc                   UHC private data
  @param  Field                 Field to get

  @retval                       Value of the field

**/


UINT32
OhciGetHcControl (
  IN USB_OHCI_HC_DEV   *Ohc,
  IN UINTN             Field
  );


/**

  Set HcCommand reg value

  @param  Ohc                   UHC private data
  @param  Field                 Field to set
  @param  Value                 Value to set

  @retval EFI_SUCCESS           Value set

**/

EFI_STATUS
OhciSetHcCommandStatus (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                Field,
  IN UINT32               Value
  );

/**

  Get specific field of HcCommand reg value

  @param  Ohc                   UHC private data
  @param  Field                 Field to get

  @retval                       Value of the field

**/

UINT32
OhciGetHcCommandStatus (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                Field
  );

/**

  Clear specific fields of Interrupt Status

  @param  Ohc                   UHC private data
  @param  Field                 Field to clear

  @retval EFI_SUCCESS           Fields cleared

**/

EFI_STATUS
OhciClearInterruptStatus (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                Field
  );

/**

  Get fields of HcInterrupt reg value

  @param  Ohc                   UHC private data
  @param  Field                 Field to get

  @retval                       Value of the field

**/

UINT32
OhciGetHcInterruptStatus (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                Field
  );

/**

  Set Interrupt Control reg value

  @param  Ohc                   UHC private data
  @param  StatEnable            Enable or Disable
  @param  Field                 Field to set
  @param  Value                 Value to set

  @retval EFI_SUCCESS           Value set

**/

EFI_STATUS
OhciSetInterruptControl (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN BOOLEAN              StatEnable,
  IN UINTN                Field,
  IN UINT32               Value
  );

/**

  Get field of HcInterruptControl reg value

  @param  Ohc                   UHC private data
  @param  Field                 Field to get

  @retval                       Value of the field

**/

UINT32
OhciGetHcInterruptControl (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                Field
  );


/**

  Set memory pointer of specific type

  @param  Ohc                   UHC private data
  @param  PointerType           Type of the pointer to set
  @param  Value                 Value to set

  @retval EFI_SUCCESS           Memory pointer set

**/

EFI_STATUS
OhciSetMemoryPointer(
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                PointerType,
  IN VOID                 *Value
  );

/**

  Get memory pointer of specific type

  @param  Ohc                   UHC private data
  @param  PointerType           Type of pointer

  @retval                       Memory pointer of the specific type

**/

VOID *
OhciGetMemoryPointer (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                PointerType
  );

/**

  Set Frame Interval value

  @param  Ohc                   UHC private data
  @param  Field                 Field to set
  @param  Value                 Value to set

  @retval  EFI_SUCCESS          Value set

**/

EFI_STATUS
OhciSetFrameInterval (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                Field,
  IN UINT32               Value
  );


/**

  Get field of frame interval reg value

  @param  Ohc                   UHC private data
  @param  Field                 Field to get

  @retval                       Value of the field

**/

UINT32
OhciGetFrameInterval (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                Field
  );


/**

  Set Frame Remaining reg value

  @param  Ohc                   UHC private data
  @param  Value                 Value to set

  @retval  EFI_SUCCESS          Value set

**/

EFI_STATUS
OhciSetFrameRemaining (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINT32               Value
  );

/**

  Get value of frame remaining reg

  @param  Ohc                   UHC private data
  @param  Field                 Field to get

  @retval                       Value of frame remaining reg

**/
UINT32
OhciGetFrameRemaining (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                Field
  );

/**

  Set frame number reg value

  @param  Ohc                   UHC private data
  @param  Value                 Value to set

  @retval  EFI_SUCCESS          Value set

**/

EFI_STATUS
OhciSetFrameNumber(
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINT32               Value
  );

/**

  Get frame number reg value

  @param  Ohc                   UHC private data

  @retval                       Value of frame number reg

**/

UINT32
OhciGetFrameNumber (
  IN USB_OHCI_HC_DEV      *Ohc
  );


/**

  Set period start reg value
  
  @param  Ohc                   UHC private data
  @param  Value                 Value to set

  @retval EFI_SUCCESS           Value set

**/

EFI_STATUS
OhciSetPeriodicStart (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINT32               Value
  );


/**

  Get periodic start reg value

  @param  Ohc                   UHC private data

  @param                        Value of periodic start reg

**/

UINT32
OhciGetPeriodicStart (
  IN USB_OHCI_HC_DEV      *Ohc
  );


/**

  Set Ls Threshold reg value

  @param  Ohc                   UHC private data
  @param  Value                 Value to set

  @retval  EFI_SUCCESS          Value set

**/

EFI_STATUS
OhciSetLsThreshold (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINT32               Value
  );

/**

  Get Ls Threshold reg value

  @param  Ohc                   UHC private data

  @retval                       Value of Ls Threshold reg

**/

UINT32
OhciGetLsThreshold (
  IN USB_OHCI_HC_DEV      *Ohc
  );

/**

  Set Root Hub Descriptor reg value

  @param  Ohc                   UHC private data
  @param  Field                 Field to set
  @param  Value                 Value to set

  @retval  EFI_SUCCESS          Value set

**/
EFI_STATUS
OhciSetRootHubDescriptor (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                Field,
  IN UINT32               Value
  );


/**

  Get Root Hub Descriptor reg value

  @param  Ohc                   UHC private data
  @param  Field                 Field to get

  @retval                       Value of the field

**/

UINT32
OhciGetRootHubDescriptor (
  IN USB_OHCI_HC_DEV     *Ohc,
  IN UINTN               Field
  );

/**

  Set Root Hub Status reg value

  @param  Ohc                   UHC private data
  @param  Field                 Field to set

  @retval  EFI_SUCCESS          Value set

**/

EFI_STATUS
OhciSetRootHubStatus (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                Field
  );


/**

  Get Root Hub Status reg value

  @param  Ohc                   UHC private data
  @param  Field                 Field to get

  @retval                       Value of the field

**/

UINT32
OhciGetRootHubStatus (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINTN                Field
  );


/**

  Set Root Hub Port Status reg value

  @param  Ohc                   UHC private data
  @param  Index                 Index of the port
  @param  Field                 Field to set

  @retval  EFI_SUCCESS          Value set

**/

EFI_STATUS
OhciSetRootHubPortStatus (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINT32               Index,
  IN UINTN                Field
  );


/**

  Get Root Hub Port Status reg value

  @param  Ohc                   UHC private data
  @param  Index                 Index of the port
  @param  Field                 Field to get

  @retval                       Value of the field and index

**/

UINT32
OhciReadRootHubPortStatus (
  IN USB_OHCI_HC_DEV      *Ohc,
  IN UINT32               Index,
  IN UINTN                Field
  );

#endif