| /** @file | |
| ISA Bus UEFI driver. | |
| Discovers all the ISA Controllers and their resources by using the ISA ACPI | |
| Protocol, produces an instance of the ISA I/O Protocol for every ISA | |
| Controller found. This driver is designed to manage a PCI-to-ISA bridge Device | |
| such as LPC bridge. | |
| Copyright (c) 2006 - 2009, Intel Corporation.<BR> | |
| 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. | |
| **/ | |
| #include "InternalIsaBus.h" | |
| // | |
| // ISA Bus Driver Global Variables | |
| // | |
| EFI_DRIVER_BINDING_PROTOCOL gIsaBusControllerDriver = { | |
| IsaBusControllerDriverSupported, | |
| IsaBusControllerDriverStart, | |
| IsaBusControllerDriverStop, | |
| 0xa, | |
| NULL, | |
| NULL | |
| }; | |
| /** | |
| The main entry point for the ISA Bus driver. | |
| @param[in] ImageHandle The firmware allocated handle for the EFI image. | |
| @param[in] SystemTable A pointer to the EFI System Table. | |
| @retval EFI_SUCCESS The entry point is executed successfully. | |
| @retval EFI_OUT_OF_RESOURCES There was not enough memory in pool to install all the protocols. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| InitializeIsaBus( | |
| IN EFI_HANDLE ImageHandle, | |
| IN EFI_SYSTEM_TABLE *SystemTable | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| // | |
| // Install driver model protocol(s). | |
| // | |
| Status = EfiLibInstallDriverBindingComponentName2 ( | |
| ImageHandle, | |
| SystemTable, | |
| &gIsaBusControllerDriver, | |
| ImageHandle, | |
| &gIsaBusComponentName, | |
| &gIsaBusComponentName2 | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| return Status; | |
| } | |
| /** | |
| Tests to see if a controller can be managed by the ISA Bus Driver. If a child device is provided, | |
| it further tests to see if this driver supports creating a handle for the specified child device. | |
| Note that the ISA Bus driver always creates all of its child handles on the first call to Start(). | |
| How the Start() function of a driver is implemented can affect how the Supported() function is implemented. | |
| @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. | |
| @param[in] Controller The handle of the controller to test. | |
| @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. | |
| @retval EFI_SUCCESS The device is supported by this driver. | |
| @retval EFI_ALREADY_STARTED The device is already being managed by this driver. | |
| @retval EFI_ACCESS_DENIED The device is already being managed by a different driver | |
| or an application that requires exclusive access. | |
| @retval EFI_UNSUPPORTED The device is is not supported by this driver. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IsaBusControllerDriverSupported ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE Controller, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath; | |
| EFI_ISA_ACPI_PROTOCOL *IsaAcpi; | |
| // | |
| // If RemainingDevicePath is not NULL, it should verify that the first device | |
| // path node in RemainingDevicePath is an ACPI Device path node which is a | |
| // legal Device Path Node for this bus driver's children. | |
| // | |
| if (RemainingDevicePath != NULL) { | |
| if (RemainingDevicePath->Type != ACPI_DEVICE_PATH) { | |
| return EFI_UNSUPPORTED; | |
| } else if (RemainingDevicePath->SubType == ACPI_DP) { | |
| if (DevicePathNodeLength (RemainingDevicePath) != sizeof (ACPI_HID_DEVICE_PATH)) { | |
| return EFI_UNSUPPORTED; | |
| } | |
| } else if (RemainingDevicePath->SubType == ACPI_EXTENDED_DP) { | |
| if (DevicePathNodeLength (RemainingDevicePath) != sizeof (ACPI_EXTENDED_HID_DEVICE_PATH)) { | |
| return EFI_UNSUPPORTED; | |
| } | |
| } else { | |
| return EFI_UNSUPPORTED; | |
| } | |
| } | |
| // | |
| // Try to open EFI DEVICE PATH protocol on the controller | |
| // | |
| Status = gBS->OpenProtocol ( | |
| Controller, | |
| &gEfiDevicePathProtocolGuid, | |
| (VOID **) &ParentDevicePath, | |
| This->DriverBindingHandle, | |
| Controller, | |
| EFI_OPEN_PROTOCOL_BY_DRIVER | |
| ); | |
| // | |
| // Although this driver creates all child handles at one time, | |
| // but because all child handles may be not stopped at one time in EFI Driver Binding.Stop(), | |
| // So it is allowed to create child handles again in successive calls to EFI Driver Binding.Start(). | |
| // | |
| if (Status == EFI_ALREADY_STARTED) { | |
| return EFI_SUCCESS; | |
| } | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| gBS->CloseProtocol ( | |
| Controller, | |
| &gEfiDevicePathProtocolGuid, | |
| This->DriverBindingHandle, | |
| Controller | |
| ); | |
| // | |
| // Try to get Pci IO Protocol because it is assumed | |
| // to have been opened by ISA ACPI driver | |
| // | |
| Status = gBS->OpenProtocol ( | |
| Controller, | |
| &gEfiPciIoProtocolGuid, | |
| NULL, | |
| This->DriverBindingHandle, | |
| Controller, | |
| EFI_OPEN_PROTOCOL_TEST_PROTOCOL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Try to open the Isa Acpi protocol on the controller | |
| // | |
| Status = gBS->OpenProtocol ( | |
| Controller, | |
| &gEfiIsaAcpiProtocolGuid, | |
| (VOID **) &IsaAcpi, | |
| This->DriverBindingHandle, | |
| Controller, | |
| EFI_OPEN_PROTOCOL_BY_DRIVER | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Add more check to see if the child device is valid by calling IsaAcpi->DeviceEnumerate? | |
| // | |
| gBS->CloseProtocol ( | |
| Controller, | |
| &gEfiIsaAcpiProtocolGuid, | |
| This->DriverBindingHandle, | |
| Controller | |
| ); | |
| return Status; | |
| } | |
| /** | |
| Start this driver on ControllerHandle. | |
| Note that the ISA Bus driver always creates all of its child handles on the first call to Start(). | |
| The Start() function is designed to be invoked from the EFI boot service ConnectController(). | |
| As a result, much of the error checking on the parameters to Start() has been moved into this | |
| common boot service. It is legal to call Start() from other locations, but the following calling | |
| restrictions must be followed or the system behavior will not be deterministic. | |
| 1. ControllerHandle must be a valid EFI_HANDLE. | |
| 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned | |
| EFI_DEVICE_PATH_PROTOCOL. | |
| 3. Prior to calling Start(), the Supported() function for the driver specified by This must | |
| have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS. | |
| @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. | |
| @param[in] ControllerHandle The handle of the controller to start. This handle | |
| must support a protocol interface that supplies | |
| an I/O abstraction to the driver. | |
| @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. | |
| This parameter is ignored by device drivers, and is optional for bus drivers. | |
| @retval EFI_SUCCESS The device was started. | |
| @retval EFI_DEVICE_ERROR The device could not be started due to a device error. | |
| Currently not implemented. | |
| @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources. | |
| @retval Others The driver failded to start the device. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IsaBusControllerDriverStart ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE Controller, | |
| IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| EFI_PCI_IO_PROTOCOL *PciIo; | |
| EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath; | |
| EFI_ISA_ACPI_PROTOCOL *IsaAcpi; | |
| EFI_ISA_ACPI_DEVICE_ID *IsaDevice; | |
| EFI_ISA_ACPI_RESOURCE_LIST *ResourceList; | |
| EFI_GENERIC_MEMORY_TEST_PROTOCOL *GenMemoryTest; | |
| // | |
| // Local variables declaration for StatusCode reporting | |
| // | |
| EFI_DEVICE_PATH_PROTOCOL *DevicePathData; | |
| // | |
| // Get Pci IO Protocol | |
| // | |
| Status = gBS->OpenProtocol ( | |
| Controller, | |
| &gEfiPciIoProtocolGuid, | |
| (VOID **) &PciIo, | |
| This->DriverBindingHandle, | |
| Controller, | |
| EFI_OPEN_PROTOCOL_GET_PROTOCOL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Open Device Path Protocol | |
| // | |
| Status = gBS->OpenProtocol ( | |
| Controller, | |
| &gEfiDevicePathProtocolGuid, | |
| (VOID **) &ParentDevicePath, | |
| This->DriverBindingHandle, | |
| Controller, | |
| EFI_OPEN_PROTOCOL_BY_DRIVER | |
| ); | |
| if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) { | |
| return Status; | |
| } | |
| // | |
| // Open ISA Acpi Protocol | |
| // | |
| Status = gBS->OpenProtocol ( | |
| Controller, | |
| &gEfiIsaAcpiProtocolGuid, | |
| (VOID **) &IsaAcpi, | |
| This->DriverBindingHandle, | |
| Controller, | |
| EFI_OPEN_PROTOCOL_BY_DRIVER | |
| ); | |
| if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) { | |
| // | |
| // Close opened protocol | |
| // | |
| gBS->CloseProtocol ( | |
| Controller, | |
| &gEfiDevicePathProtocolGuid, | |
| This->DriverBindingHandle, | |
| Controller | |
| ); | |
| return Status; | |
| } | |
| // | |
| // The IsaBus driver will use memory below 16M, which is not tested yet, | |
| // so call CompatibleRangeTest to test them. Since memory below 1M should | |
| // be reserved to CSM, and 15M~16M might be reserved for Isa hole, test 1M | |
| // ~15M here | |
| // | |
| Status = gBS->LocateProtocol ( | |
| &gEfiGenericMemTestProtocolGuid, | |
| NULL, | |
| (VOID **) &GenMemoryTest | |
| ); | |
| if (!EFI_ERROR (Status)) { | |
| Status = GenMemoryTest->CompatibleRangeTest ( | |
| GenMemoryTest, | |
| 0x100000, | |
| 0xE00000 | |
| ); | |
| } | |
| // | |
| // Report Status Code here since we will initialize the host controller | |
| // | |
| REPORT_STATUS_CODE_WITH_DEVICE_PATH ( | |
| EFI_PROGRESS_CODE, | |
| (EFI_IO_BUS_LPC | EFI_IOB_PC_INIT), | |
| ParentDevicePath | |
| ); | |
| // | |
| // first init ISA interface | |
| // | |
| IsaAcpi->InterfaceInit (IsaAcpi); | |
| // | |
| // Report Status Code here since we will enable the host controller | |
| // | |
| REPORT_STATUS_CODE_WITH_DEVICE_PATH ( | |
| EFI_PROGRESS_CODE, | |
| (EFI_IO_BUS_LPC | EFI_IOB_PC_ENABLE), | |
| ParentDevicePath | |
| ); | |
| // | |
| // Create each ISA device handle in this ISA bus | |
| // | |
| IsaDevice = NULL; | |
| do { | |
| Status = IsaAcpi->DeviceEnumerate (IsaAcpi, &IsaDevice); | |
| if (EFI_ERROR (Status)) { | |
| break; | |
| } | |
| // | |
| // Get current resource of this ISA device | |
| // | |
| ResourceList = NULL; | |
| Status = IsaAcpi->GetCurResource (IsaAcpi, IsaDevice, &ResourceList); | |
| if (EFI_ERROR (Status)) { | |
| continue; | |
| } | |
| // | |
| // Create handle for this ISA device | |
| // | |
| // If any child device handle was created in previous call to Start() and not stopped | |
| // in previous call to Stop(), it will not be created again because the | |
| // InstallMultipleProtocolInterfaces() boot service will reject same device path. | |
| // | |
| Status = IsaCreateDevice ( | |
| This, | |
| Controller, | |
| PciIo, | |
| ParentDevicePath, | |
| ResourceList, | |
| &DevicePathData | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| continue; | |
| } | |
| // | |
| // Initialize ISA device | |
| // | |
| IsaAcpi->InitDevice (IsaAcpi, IsaDevice); | |
| // | |
| // Set resources for this ISA device | |
| // | |
| Status = IsaAcpi->SetResource (IsaAcpi, IsaDevice, ResourceList); | |
| // | |
| // Report Status Code here when failed to resource conflicts | |
| // | |
| if (EFI_ERROR (Status) && (Status != EFI_UNSUPPORTED)) { | |
| // | |
| // It's hard to tell which resource conflicts | |
| // | |
| REPORT_STATUS_CODE_WITH_DEVICE_PATH ( | |
| EFI_ERROR_CODE, | |
| (EFI_IO_BUS_LPC | EFI_IOB_EC_RESOURCE_CONFLICT), | |
| DevicePathData | |
| ); | |
| } | |
| // | |
| // Set power for this ISA device | |
| // | |
| IsaAcpi->SetPower (IsaAcpi, IsaDevice, TRUE); | |
| // | |
| // Enable this ISA device | |
| // | |
| IsaAcpi->EnableDevice (IsaAcpi, IsaDevice, TRUE); | |
| } while (TRUE); | |
| return EFI_SUCCESS; | |
| } | |
| /** | |
| Stop this driver on ControllerHandle. | |
| The Stop() function is designed to be invoked from the EFI boot service DisconnectController(). | |
| As a result, much of the error checking on the parameters to Stop() has been moved | |
| into this common boot service. It is legal to call Stop() from other locations, | |
| but the following calling restrictions must be followed or the system behavior will not be deterministic. | |
| 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this | |
| same driver's Start() function. | |
| 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid | |
| EFI_HANDLE. In addition, all of these handles must have been created in this driver's | |
| Start() function, and the Start() function must have called OpenProtocol() on | |
| ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER. | |
| @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. | |
| @param[in] ControllerHandle A handle to the device being stopped. The handle must | |
| support a bus specific I/O protocol for the driver | |
| to use to stop the device. | |
| @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer. | |
| @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL | |
| if NumberOfChildren is 0. | |
| @retval EFI_SUCCESS The device was stopped. | |
| @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| IsaBusControllerDriverStop ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL * This, | |
| IN EFI_HANDLE Controller, | |
| IN UINTN NumberOfChildren, | |
| IN EFI_HANDLE * ChildHandleBuffer OPTIONAL | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| UINTN Index; | |
| BOOLEAN AllChildrenStopped; | |
| ISA_IO_DEVICE *IsaIoDevice; | |
| EFI_ISA_IO_PROTOCOL *IsaIo; | |
| EFI_PCI_IO_PROTOCOL *PciIo; | |
| if (NumberOfChildren == 0) { | |
| // | |
| // Close the bus driver | |
| // | |
| Status = gBS->CloseProtocol ( | |
| Controller, | |
| &gEfiDevicePathProtocolGuid, | |
| This->DriverBindingHandle, | |
| Controller | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| Status = gBS->CloseProtocol ( | |
| Controller, | |
| &gEfiIsaAcpiProtocolGuid, | |
| This->DriverBindingHandle, | |
| Controller | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| return EFI_SUCCESS; | |
| } | |
| // | |
| // Complete all outstanding transactions to Controller. | |
| // Don't allow any new transaction to Controller to be started. | |
| // | |
| // | |
| // Stop all the children | |
| // Find all the ISA devices that were discovered on this PCI to ISA Bridge | |
| // with the Start() function. | |
| // | |
| AllChildrenStopped = TRUE; | |
| for (Index = 0; Index < NumberOfChildren; Index++) { | |
| Status = gBS->OpenProtocol ( | |
| ChildHandleBuffer[Index], | |
| &gEfiIsaIoProtocolGuid, | |
| (VOID **) &IsaIo, | |
| This->DriverBindingHandle, | |
| Controller, | |
| EFI_OPEN_PROTOCOL_GET_PROTOCOL | |
| ); | |
| if (!EFI_ERROR (Status)) { | |
| IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (IsaIo); | |
| // | |
| // Close the child handle | |
| // | |
| Status = gBS->CloseProtocol ( | |
| Controller, | |
| &gEfiPciIoProtocolGuid, | |
| This->DriverBindingHandle, | |
| ChildHandleBuffer[Index] | |
| ); | |
| Status = gBS->UninstallMultipleProtocolInterfaces ( | |
| ChildHandleBuffer[Index], | |
| &gEfiDevicePathProtocolGuid, | |
| IsaIoDevice->DevicePath, | |
| &gEfiIsaIoProtocolGuid, | |
| &IsaIoDevice->IsaIo, | |
| NULL | |
| ); | |
| if (!EFI_ERROR (Status)) { | |
| FreePool (IsaIoDevice->DevicePath); | |
| FreePool (IsaIoDevice); | |
| } else { | |
| // | |
| // Re-open PCI IO Protocol on behalf of the child device | |
| // because of failure of destroying the child device handle | |
| // | |
| gBS->OpenProtocol ( | |
| Controller, | |
| &gEfiPciIoProtocolGuid, | |
| (VOID **) &PciIo, | |
| This->DriverBindingHandle, | |
| ChildHandleBuffer[Index], | |
| EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER | |
| ); | |
| } | |
| } | |
| if (EFI_ERROR (Status)) { | |
| AllChildrenStopped = FALSE; | |
| } | |
| } | |
| if (!AllChildrenStopped) { | |
| return EFI_DEVICE_ERROR; | |
| } | |
| return EFI_SUCCESS; | |
| } | |
| // | |
| // Internal Function | |
| // | |
| /** | |
| Create EFI Handle for a ISA device found via ISA ACPI Protocol | |
| @param[in] This The EFI_DRIVER_BINDING_PROTOCOL instance. | |
| @param[in] Controller The handle of ISA bus controller(PCI to ISA bridge) | |
| @param[in] PciIo The Pointer to the PCI protocol | |
| @param[in] ParentDevicePath Device path of the ISA bus controller | |
| @param[in] IsaDeviceResourceList The resource list of the ISA device | |
| @param[out] ChildDevicePath The pointer to the child device. | |
| @retval EFI_SUCCESS The handle for the child device was created. | |
| @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources. | |
| @retval EFI_DEVICE_ERROR The handle for the child device can not be created. | |
| **/ | |
| EFI_STATUS | |
| IsaCreateDevice ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE Controller, | |
| IN EFI_PCI_IO_PROTOCOL *PciIo, | |
| IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath, | |
| IN EFI_ISA_ACPI_RESOURCE_LIST *IsaDeviceResourceList, | |
| OUT EFI_DEVICE_PATH_PROTOCOL **ChildDevicePath | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| ISA_IO_DEVICE *IsaIoDevice; | |
| EFI_DEV_PATH Node; | |
| // | |
| // Initialize the PCI_IO_DEVICE structure | |
| // | |
| IsaIoDevice = AllocateZeroPool (sizeof (ISA_IO_DEVICE)); | |
| if (IsaIoDevice == NULL) { | |
| return EFI_OUT_OF_RESOURCES; | |
| } | |
| IsaIoDevice->Signature = ISA_IO_DEVICE_SIGNATURE; | |
| IsaIoDevice->Handle = NULL; | |
| IsaIoDevice->PciIo = PciIo; | |
| // | |
| // Initialize the ISA I/O instance structure | |
| // | |
| InitializeIsaIoInstance (IsaIoDevice, IsaDeviceResourceList); | |
| // | |
| // Build the child device path | |
| // | |
| Node.DevPath.Type = ACPI_DEVICE_PATH; | |
| Node.DevPath.SubType = ACPI_DP; | |
| SetDevicePathNodeLength (&Node.DevPath, sizeof (ACPI_HID_DEVICE_PATH)); | |
| Node.Acpi.HID = IsaDeviceResourceList->Device.HID; | |
| Node.Acpi.UID = IsaDeviceResourceList->Device.UID; | |
| IsaIoDevice->DevicePath = AppendDevicePathNode ( | |
| ParentDevicePath, | |
| &Node.DevPath | |
| ); | |
| if (IsaIoDevice->DevicePath == NULL) { | |
| Status = EFI_OUT_OF_RESOURCES; | |
| goto Done; | |
| } | |
| *ChildDevicePath = IsaIoDevice->DevicePath; | |
| // | |
| // Create a child handle and install Device Path and ISA I/O protocols | |
| // | |
| Status = gBS->InstallMultipleProtocolInterfaces ( | |
| &IsaIoDevice->Handle, | |
| &gEfiDevicePathProtocolGuid, | |
| IsaIoDevice->DevicePath, | |
| &gEfiIsaIoProtocolGuid, | |
| &IsaIoDevice->IsaIo, | |
| NULL | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto Done; | |
| } | |
| Status = gBS->OpenProtocol ( | |
| Controller, | |
| &gEfiPciIoProtocolGuid, | |
| (VOID **) &PciIo, | |
| This->DriverBindingHandle, | |
| IsaIoDevice->Handle, | |
| EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| gBS->UninstallMultipleProtocolInterfaces ( | |
| IsaIoDevice->Handle, | |
| &gEfiDevicePathProtocolGuid, | |
| IsaIoDevice->DevicePath, | |
| &gEfiIsaIoProtocolGuid, | |
| &IsaIoDevice->IsaIo, | |
| NULL | |
| ); | |
| } | |
| Done: | |
| if (EFI_ERROR (Status)) { | |
| if (IsaIoDevice->DevicePath != NULL) { | |
| FreePool (IsaIoDevice->DevicePath); | |
| } | |
| FreePool (IsaIoDevice); | |
| } | |
| return Status; | |
| } | |