Bus/Usb/UsbBusDxe/UsbDesc.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:

    UsbDesc.h

  Abstract:

    Manage Usb Descriptor List

  Revision History


**/

#ifndef _USB_DESCRIPTOR_H_
#define _USB_DESCRIPTOR_H_

enum {
  USB_MAX_INTERFACE_SETTING  = 8
};

//
// The RequestType in EFI_USB_DEVICE_REQUEST is composed of
// three fields: One bit direction, 2 bit type, and 5 bit
// target.
//
#define USB_REQUEST_TYPE(Dir, Type, Target) \
          ((UINT8)((((Dir) == EfiUsbDataIn ? 0x01 : 0) << 7) | (Type) | (Target)))

//
// A common header for usb standard descriptor.
// Each stand descriptor has a length and type.
//
#pragma pack(1)
typedef struct {
  UINT8                   Len;
  UINT8                   Type;
} USB_DESC_HEAD;
#pragma pack()


//
// Each USB device has a device descriptor. Each device may
// have several configures. Each configure contains several
// interfaces. Each interface may have several settings. Each
// setting has several endpoints.
//
// EFI_USB_..._DESCRIPTOR must be the first member of the
// structure.
//
typedef struct {
  EFI_USB_ENDPOINT_DESCRIPTOR   Desc;
  UINT8                         Toggle;
} USB_ENDPOINT_DESC;

typedef struct {
  EFI_USB_INTERFACE_DESCRIPTOR  Desc;
  USB_ENDPOINT_DESC             **Endpoints;
} USB_INTERFACE_SETTING;

//
// An interface may have several settings. Use a
// fixed max number of settings to simplify code.
// It should sufice in most environments.
//
typedef struct {
  USB_INTERFACE_SETTING*        Settings[USB_MAX_INTERFACE_SETTING];
  UINTN                         NumOfSetting;
  UINT8                         ActiveIndex;  // Index of active setting
} USB_INTERFACE_DESC;

typedef struct {
  EFI_USB_CONFIG_DESCRIPTOR     Desc;
  USB_INTERFACE_DESC            **Interfaces;
} USB_CONFIG_DESC;

typedef struct {
  EFI_USB_DEVICE_DESCRIPTOR     Desc;
  USB_CONFIG_DESC               **Configs;
} USB_DEVICE_DESC;

EFI_STATUS
UsbCtrlRequest (
  IN USB_DEVICE             *UsbDev,
  IN EFI_USB_DATA_DIRECTION Direction,
  IN UINTN                  Type,
  IN UINTN                  Target,
  IN UINTN                  Request,
  IN UINT16                 Value,
  IN UINT16                 Index,
  IN OUT VOID               *Buf,
  IN UINTN                  Length
  );

EFI_STATUS
UsbGetMaxPacketSize0 (
  IN USB_DEVICE           *UsbDev
  );

VOID
UsbFreeDevDesc (
  IN USB_DEVICE_DESC      *DevDesc
  );

EFI_USB_STRING_DESCRIPTOR*
UsbGetOneString (
  IN     USB_DEVICE       *UsbDev,
  IN     UINT8            StringIndex,
  IN     UINT16           LangId
  );

EFI_STATUS
UsbBuildDescTable (
  IN USB_DEVICE           *UsbDev
  );

EFI_STATUS
UsbSetAddress (
  IN USB_DEVICE           *UsbDev,
  IN UINT8                Address
  );

EFI_STATUS
UsbSetConfig (
  IN USB_DEVICE           *UsbDev,
  IN UINT8                ConfigIndex
  );

EFI_STATUS
UsbIoClearFeature (
  IN  EFI_USB_IO_PROTOCOL *UsbIo,
  IN  UINTN               Target,
  IN  UINT16              Feature,
  IN  UINT16              Index
  );
#endif