audk/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbEnumer.h

/** @file

Copyright (c) 2007, Intel Corporation
All rights reserved. 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.

  Module Name:

    UsbEnumer.h

  Abstract:

    USB bus enumeration interface

  Revision History


**/

#ifndef _USB_ENUMERATION_H_
#define _USB_ENUMERATION_H_

//
// Advance the byte and bit to the next bit, adjust byte accordingly.
//
#define USB_NEXT_BIT(Byte, Bit)   \
          do {                \
            (Bit)++;          \
            if ((Bit) > 7) {  \
              (Byte)++;       \
              (Bit) = 0;      \
            }                 \
          } while (0)


//
// Common interface used by usb bus enumeration process.
// This interface is defined to mask the difference between
// the root hub and normal hub. So, bus enumeration code
// can be shared by both root hub and normal hub
//
typedef
EFI_STATUS
(*USB_HUB_INIT) (
  IN USB_INTERFACE        *UsbIf
  );

//
// Get the port status. This function is required to
// ACK the port change bits although it will return
// the port changes in PortState. Bus enumeration code
// doesn't need to ACK the port change bits.
//
typedef
EFI_STATUS
(*USB_HUB_GET_PORT_STATUS) (
  IN  USB_INTERFACE       *UsbIf,
  IN  UINT8               Port,
  OUT EFI_USB_PORT_STATUS *PortState
  );

typedef
VOID
(*USB_HUB_CLEAR_PORT_CHANGE) (
  IN USB_INTERFACE        *HubIf,
  IN UINT8                Port
  );

typedef
EFI_STATUS
(*USB_HUB_SET_PORT_FEATURE) (
  IN USB_INTERFACE        *UsbIf,
  IN UINT8                Port,
  IN EFI_USB_PORT_FEATURE Feature
  );

typedef
EFI_STATUS
(*USB_HUB_CLEAR_PORT_FEATURE) (
  IN USB_INTERFACE        *UsbIf,
  IN UINT8                Port,
  IN EFI_USB_PORT_FEATURE Feature
  );

typedef
EFI_STATUS
(*USB_HUB_RESET_PORT) (
  IN USB_INTERFACE        *UsbIf,
  IN UINT8                Port
  );

typedef
EFI_STATUS
(*USB_HUB_RELEASE) (
  IN USB_INTERFACE        *UsbIf
  );

struct _USB_HUB_API{
  USB_HUB_INIT                Init;
  USB_HUB_GET_PORT_STATUS     GetPortStatus;
  USB_HUB_CLEAR_PORT_CHANGE   ClearPortChange;
  USB_HUB_SET_PORT_FEATURE    SetPortFeature;
  USB_HUB_CLEAR_PORT_FEATURE  ClearPortFeature;
  USB_HUB_RESET_PORT          ResetPort;
  USB_HUB_RELEASE             Release;
};

USB_ENDPOINT_DESC*
UsbGetEndpointDesc (
  IN USB_INTERFACE        *UsbIf,
  IN UINT8                EpAddr
  );


EFI_STATUS
UsbSelectSetting (
  IN USB_INTERFACE_DESC   *IfDesc,
  IN UINT8                Alternate
  );

EFI_STATUS
UsbSelectConfig (
  IN USB_DEVICE           *Device,
  IN UINT8                ConfigIndex
  );

VOID
UsbRemoveConfig (
  IN USB_DEVICE           *Device
  );

EFI_STATUS
UsbRemoveDevice (
  IN USB_DEVICE           *Device
  );

VOID
UsbHubEnumeration (
  IN EFI_EVENT            Event,
  IN VOID                 *Context
  );

VOID
UsbRootHubEnumeration (
  IN EFI_EVENT            Event,
  IN VOID                 *Context
  );
#endif