audk/IntelFrameworkPkg/Include/Protocol/IncompatiblePciDeviceSupport.h

/** @file
  This file declares EFI Incompatible PCI Device Support Protocol
  This protocol allows the PCI bus driver to support resource allocation for some PCI devices that do not comply
  with the PCI Specification.
  The EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_PROTOCOL is used by the PCI bus driver
  to support resource allocation for some PCI devices that do not comply with the PCI Specification.
  This protocol can find some incompatible PCI devices and report their special resource
  requirements to the PCI bus driver. The generic PCI bus driver does not have prior knowledge of
  any incompatible PCI devices. It interfaces with the
  EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_PROTOCOL to find out if a device is
  incompatible and to obtain the special configuration requirements for a specific incompatible PCI
  device.
  This protocol is optional, and only one instance of this protocol can be present in the system. If a
  platform supports this protocol, this protocol is produced by a Driver Execution Environment
  (DXE) driver and must be made available before the Boot Device Selection (BDS) phase. The PCI
  bus driver will look for the presence of this protocol before it begins PCI enumeration.

  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:  IncompatiblePciDeviceSupport.h

  @par Revision Reference:
  This protocol is defined in Framework of EFI PCI Platform Support Specification.
  Version0.9

**/

#ifndef _INCOMPATIBLE_PCI_DEVICE_SUPPORT_H_
#define _INCOMPATIBLE_PCI_DEVICE_SUPPORT_H_

#include <PiDxe.h>

#define EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_PROTOCOL_GUID \
        {0xeb23f55a, 0x7863, 0x4ac2, {0x8d, 0x3d, 0x95, 0x65, 0x35, 0xde, 0x03, 0x75} }

typedef struct _EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_PROTOCOL EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_PROTOCOL;

/**
  Returns a list of ACPI resource descriptors that detail the special
  resource configuration requirements for an incompatible PCI device.

  @param  This                  Pointer to the EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_PROTOCOL instance.
  @param  VendorID              A unique ID to identify the manufacturer of the PCI device.
  @param  DeviceID              A unique ID to identify the particular PCI device.
  @param  RevisionID            A PCI device-specific revision identifier.
  @param  SubsystemVendorId     Specifies the subsystem vendor ID.
  @param  SubsystemDeviceId     Specifies the subsystem device ID.
  @param  Configuration         A list of ACPI resource descriptors that detail
                                the configuration requirement.

  @retval EFI_SUCCESS           The function always returns EFI_SUCCESS.

**/
typedef
EFI_STATUS
(EFIAPI *EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_CHECK_DEVICE)(
  IN EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_PROTOCOL   *This,
  IN  UINTN                                         VendorId,
  IN  UINTN                                         DeviceId,
  IN  UINTN                                         Revision,
  IN  UINTN                                         SubVendorId,OPTIONAL
  IN  UINTN                                         SubDeviceId,OPTIONAL
  OUT VOID                                          **Configuration
);


//
// Interface structure for the Incompatible PCI Device Support Protocol
//
/**
  @par Protocol Description:
  This protocol can find some incompatible PCI devices and report their
  special resource requirements to the PCI bus driver.

  @param CheckDevice
  Returns a list of ACPI resource descriptors that detail any special
  resource configuration requirements if the specified device is a recognized
  incompatible PCI device.

**/
struct _EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_PROTOCOL {
  EFI_INCOMPATIBLE_PCI_DEVICE_SUPPORT_CHECK_DEVICE      CheckDevice;
};

extern EFI_GUID gEfiIncompatiblePciDeviceSupportProtocolGuid;

#endif