MdeModulePkg/Include/Ppi/UsbController.h

   1 /** @file
   2   Define APIs to retrieve USB Host Controller Info such as controller type and
   3   I/O Port Base Address.
   4
   5 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
   6
   7 This program and the accompanying materials
   8 are licensed and made available under the terms and conditions
   9 of the BSD License which accompanies this distribution.  The
  10 full text of the license may be found at
  11 http://opensource.org/licenses/bsd-license.php
  12
  13 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  14 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  15
  16 **/
  17
  18 #ifndef _PEI_USB_CONTROLLER_PPI_H_
  19 #define _PEI_USB_CONTROLLER_PPI_H_
  20
  21 ///
  22 /// Global ID for the PEI_USB_CONTROLLER_PPI.
  23 ///
  24 #define PEI_USB_CONTROLLER_PPI_GUID \
  25   { \
  26     0x3bc1f6de, 0x693e, 0x4547,{ 0xa3, 0x0, 0x21, 0x82, 0x3c, 0xa4, 0x20, 0xb2} \
  27   }
  28
  29 ///
  30 /// Forward declaration for the PEI_USB_CONTROLLER_PPI.
  31 ///
  32 typedef struct _PEI_USB_CONTROLLER_PPI PEI_USB_CONTROLLER_PPI;
  33
  34 ///
  35 /// This bit is used in the ControllerType return parameter of GetUsbController()
  36 /// to identify the USB Host Controller type as UHCI
  37 ///
  38 #define PEI_UHCI_CONTROLLER 0x01
  39
  40 ///
  41 /// This bit is used in the ControllerType return parameter of GetUsbController()
  42 /// to identify the USB Host Controller type as OHCI
  43 ///
  44 #define PEI_OHCI_CONTROLLER 0x02
  45
  46 ///
  47 /// This bit is used in the ControllerType return parameter of GetUsbController()
  48 /// to identify the USB Host Controller type as EHCI
  49 ///
  50 #define PEI_EHCI_CONTROLLER 0x03
  51
  52 /**
  53   Retrieve USB Host Controller Info such as controller type and I/O Base Address.
  54
  55   @param[in]  PeiServices      The pointer to the PEI Services Table.
  56   @param[in]  This             The pointer to this instance of the PEI_USB_CONTROLLER_PPI.
  57   @param[in]  ControllerId     The ID of the USB controller.
  58   @param[out] ControllerType   On output, returns the type of the USB controller.
  59   @param[out] BaseAddress      On output, returns the base address of UHCI's I/O ports
  60                                if UHCI is enabled or the base address of EHCI's MMIO
  61                                if EHCI is enabled.
  62
  63   @retval EFI_SUCCESS             USB controller attributes were returned successfully.
  64   @retval EFI_INVALID_PARAMETER   ControllerId is greater than the maximum number
  65                                   of USB controller supported by this platform.
  66
  67 **/
  68 typedef
  69 EFI_STATUS
  70 (EFIAPI *PEI_GET_USB_CONTROLLER)(
  71   IN  EFI_PEI_SERVICES        **PeiServices,
  72   IN  PEI_USB_CONTROLLER_PPI  *This,
  73   IN  UINT8                   UsbControllerId,
  74   OUT UINTN                   *ControllerType,
  75   OUT UINTN                   *BaseAddress
  76   );
  77
  78 ///
  79 /// This PPI contains a single service to retrieve the USB Host Controller type
  80 /// and the base address of the I/O ports used to access the USB Host Controller.
  81 ///
  82 struct _PEI_USB_CONTROLLER_PPI {
  83   PEI_GET_USB_CONTROLLER  GetUsbController;
  84 };
  85
  86 extern EFI_GUID gPeiUsbControllerPpiGuid;
  87
  88 #endif