Hi, Ho:
Does UsbNetwork have been merged into edk2 github code base?
I could not find it in the latest github version.
Thanks
At 2023-06-26 17:01:27, "RichardHo [ºÎÃ÷ÖÒ] via groups.io" <richardho=ami.com@groups.io> wrote:
>This driver provides UEFI driver for USB CDC NCM device
>
>Signed-off-by: Richard Ho <richardho@ami.com>
>Cc: Andrew Fish <afish@apple.com>
>Cc: Leif Lindholm <quic_llindhol@quicinc.com>
>Cc: Michael D Kinney <michael.d.kinney@intel.com>
>Cc: Michael Kubacki <mikuback@linux.microsoft.com>
>Cc: Zhiguang Liu <zhiguang.liu@intel.com>
>Cc: Liming Gao <gaoliming@byosoft.com.cn>
>Cc: Hao A Wu <hao.a.wu@intel.com>
>Cc: Ray Ni <ray.ni@intel.com>
>Tested-by: Tinh Nguyen <tinhnguyen@os.amperecomputing.com>
>Acked-by: Hao A Wu <hao.a.wu@intel.com>
>Reviewed-by: Rebecca Cran <rebecca@bsdio.com>
>Reviewed-by: Tony Lo <tonylo@ami.com>
>---
> .../Usb/UsbNetwork/UsbCdcNcm/ComponentName.c | 170 +++
> .../Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.c | 506 +++++++++
> .../Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.h | 245 +++++
> .../Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.inf | 42 +
> .../Usb/UsbNetwork/UsbCdcNcm/UsbNcmFunction.c | 966 ++++++++++++++++++
> MdeModulePkg/MdeModulePkg.dsc | 4 +
> 6 files changed, 1933 insertions(+)
> create mode 100644 MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/ComponentName.c
> create mode 100644 MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.c
> create mode 100644 MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.h
> create mode 100644 MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.inf
> create mode 100644 MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbNcmFunction.c
>
>diff --git a/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/ComponentName.c b/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/ComponentName.c
>new file mode 100644
>index 0000000000..3cf3dc222d
>--- /dev/null
>+++ b/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/ComponentName.c
>@@ -0,0 +1,170 @@
>+/** @file
>+ This file contains code for USB Ncm Driver Component Name definitions
>+
>+ Copyright (c) 2023, American Megatrends International LLC. All rights reserved.<BR>
>+ SPDX-License-Identifier: BSD-2-Clause-Patent
>+**/
>+#include "UsbCdcNcm.h"
>+
>+GLOBAL_REMOVE_IF_UNREFERENCED EFI_UNICODE_STRING_TABLE gUsbNcmDriverNameTable[] = {
>+ {
>+ "eng;en",
>+ L"USB NCM Driver"
>+ },
>+ {
>+ NULL,
>+ NULL
>+ }
>+};
>+
>+EFI_STATUS
>+EFIAPI
>+UsbNcmComponentNameGetDriverName (
>+ IN EFI_COMPONENT_NAME_PROTOCOL *This,
>+ IN CHAR8 *Language,
>+ OUT CHAR16 **DriverName
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+UsbNcmComponentNameGetControllerName (
>+ IN EFI_COMPONENT_NAME_PROTOCOL *This,
>+ IN EFI_HANDLE Controller,
>+ IN EFI_HANDLE ChildHandle OPTIONAL,
>+ IN CHAR8 *Language,
>+ OUT CHAR16 **ControllerName
>+ );
>+
>+GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME_PROTOCOL gUsbNcmComponentName = {
>+ UsbNcmComponentNameGetDriverName,
>+ UsbNcmComponentNameGetControllerName,
>+ "eng"
>+};
>+
>+GLOBAL_REMOVE_IF_UNREFERENCED EFI_COMPONENT_NAME2_PROTOCOL gUsbNcmComponentName2 = {
>+ (EFI_COMPONENT_NAME2_GET_DRIVER_NAME)UsbNcmComponentNameGetDriverName,
>+ (EFI_COMPONENT_NAME2_GET_CONTROLLER_NAME)UsbNcmComponentNameGetControllerName,
>+ "en"
>+};
>+
>+/**
>+ Retrieves a Unicode string that is the user readable name of the driver.
>+
>+ This function retrieves the user readable name of a driver in the form of a
>+ Unicode string. If the driver specified by This has a user readable name in
>+ the language specified by Language, then a pointer to the driver name is
>+ returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
>+ by This does not support the language specified by Language,
>+ then EFI_UNSUPPORTED is returned.
>+
>+ @param[in] This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
>+ EFI_COMPONENT_NAME_PROTOCOL instance.
>+ @param[in] Language A pointer to a Null-terminated ASCII string
>+ array indicating the language. This is the
>+ language of the driver name that the caller is
>+ requesting, and it must match one of the
>+ languages specified in SupportedLanguages. The
>+ number of languages supported by a driver is up
>+ to the driver writer. Language is specified
>+ in RFC 4646 or ISO 639-2 language code format.
>+ @param[out] DriverName A pointer to the Unicode string to return.
>+ This Unicode string is the name of the
>+ driver specified by This in the language
>+ specified by Language.
>+
>+ @retval EFI_SUCCESS The Unicode string for the Driver specified by
>+ This and the language specified by Language was
>+ returned in DriverName.
>+ @retval EFI_INVALID_PARAMETER Language is NULL.
>+ @retval EFI_INVALID_PARAMETER DriverName is NULL.
>+ @retval EFI_UNSUPPORTED The driver specified by This does not support
>+ the language specified by Language.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+UsbNcmComponentNameGetDriverName (
>+ IN EFI_COMPONENT_NAME_PROTOCOL *This,
>+ IN CHAR8 *Language,
>+ OUT CHAR16 **DriverName
>+ )
>+{
>+ return LookupUnicodeString2 (
>+ Language,
>+ This->SupportedLanguages,
>+ gUsbNcmDriverNameTable,
>+ DriverName,
>+ (BOOLEAN)(This == &gUsbNcmComponentName)
>+ );
>+}
>+
>+/**
>+ Retrieves a Unicode string that is the user readable name of the controller
>+ that is being managed by a driver.
>+
>+ This function retrieves the user readable name of the controller specified by
>+ ControllerHandle and ChildHandle in the form of a Unicode string. If the
>+ driver specified by This has a user readable name in the language specified by
>+ Language, then a pointer to the controller name is returned in ControllerName,
>+ and EFI_SUCCESS is returned. If the driver specified by This is not currently
>+ managing the controller specified by ControllerHandle and ChildHandle,
>+ then EFI_UNSUPPORTED is returned. If the driver specified by This does not
>+ support the language specified by Language, then EFI_UNSUPPORTED is returned.
>+
>+ @param[in] This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
>+ EFI_COMPONENT_NAME_PROTOCOL instance.
>+ @param[in] Controller The handle of a controller that the driver
>+ specified by This is managing. This handle
>+ specifies the controller whose name is to be
>+ returned.
>+ @param[in] ChildHandle The handle of the child controller to retrieve
>+ the name of. This is an optional parameter that
>+ may be NULL. It will be NULL for device
>+ drivers. It will also be NULL for a bus drivers
>+ that wish to retrieve the name of the bus
>+ controller. It will not be NULL for a bus
>+ driver that wishes to retrieve the name of a
>+ child controller.
>+ @param[in] Language A pointer to a Null-terminated ASCII string
>+ array indicating the language. This is the
>+ language of the driver name that the caller is
>+ requesting, and it must match one of the
>+ languages specified in SupportedLanguages. The
>+ number of languages supported by a driver is up
>+ to the driver writer. Language is specified in
>+ RFC 4646 or ISO 639-2 language code format.
>+ @param[out] ControllerName A pointer to the Unicode string to return.
>+ This Unicode string is the name of the
>+ controller specified by ControllerHandle and
>+ ChildHandle in the language specified by
>+ Language from the point of view of the driver
>+ specified by This.
>+
>+ @retval EFI_SUCCESS The Unicode string for the user readable name in
>+ the language specified by Language for the
>+ driver specified by This was returned in
>+ DriverName.
>+ @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.
>+ @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
>+ EFI_HANDLE.
>+ @retval EFI_INVALID_PARAMETER Language is NULL.
>+ @retval EFI_INVALID_PARAMETER ControllerName is NULL.
>+ @retval EFI_UNSUPPORTED The driver specified by This is not currently
>+ managing the controller specified by
>+ ControllerHandle and ChildHandle.
>+ @retval EFI_UNSUPPORTED The driver specified by This does not support
>+ the language specified by Language.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+UsbNcmComponentNameGetControllerName (
>+ IN EFI_COMPONENT_NAME_PROTOCOL *This,
>+ IN EFI_HANDLE Controller,
>+ IN EFI_HANDLE ChildHandle OPTIONAL,
>+ IN CHAR8 *Language,
>+ OUT CHAR16 **ControllerName
>+ )
>+{
>+ return EFI_UNSUPPORTED;
>+}
>diff --git a/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.c b/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.c
>new file mode 100644
>index 0000000000..f67e6aab69
>--- /dev/null
>+++ b/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.c
>@@ -0,0 +1,506 @@
>+/** @file
>+ This file contains code for USB Network Control Model
>+ binding driver
>+
>+ Copyright (c) 2023, American Megatrends International LLC. All rights reserved.<BR>
>+ SPDX-License-Identifier: BSD-2-Clause-Patent
>+**/
>+
>+#include "UsbCdcNcm.h"
>+
>+EFI_DRIVER_BINDING_PROTOCOL gUsbNcmDriverBinding = {
>+ UsbNcmDriverSupported,
>+ UsbNcmDriverStart,
>+ UsbNcmDriverStop,
>+ USB_NCM_DRIVER_VERSION,
>+ NULL,
>+ NULL
>+};
>+
>+/**
>+ Check if this interface is USB NCM SubType
>+
>+ @param[in] UsbIo A pointer to the EFI_USB_IO_PROTOCOL instance.
>+
>+ @retval TRUE USB NCM SubType.
>+ @retval FALSE Not USB NCM SubType.
>+
>+**/
>+BOOLEAN
>+IsSupportedDevice (
>+ IN EFI_USB_IO_PROTOCOL *UsbIo
>+ )
>+{
>+ EFI_STATUS Status;
>+ EFI_USB_INTERFACE_DESCRIPTOR InterfaceDescriptor;
>+
>+ Status = UsbIo->UsbGetInterfaceDescriptor (UsbIo, &InterfaceDescriptor);
>+ if (EFI_ERROR (Status)) {
>+ return FALSE;
>+ }
>+
>+ if ((InterfaceDescriptor.InterfaceClass == USB_CDC_CLASS) &&
>+ (InterfaceDescriptor.InterfaceSubClass == USB_CDC_NCM_SUBCLASS) &&
>+ (InterfaceDescriptor.InterfaceProtocol == USB_NO_CLASS_PROTOCOL))
>+ {
>+ return TRUE;
>+ }
>+
>+ return FALSE;
>+}
>+
>+/**
>+ USB NCM Driver Binding Support.
>+
>+ @param[in] This Protocol instance pointer.
>+ @param[in] ControllerHandle Handle of device to test.
>+ @param[in] RemainingDevicePath Optional parameter use to pick a specific child
>+ device to start.
>+
>+ @retval EFI_SUCCESS This driver supports this device.
>+ @retval EFI_ALREADY_STARTED This driver is already running on this device.
>+ @retval other This driver does not support this device.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+UsbNcmDriverSupported (
>+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
>+ IN EFI_HANDLE ControllerHandle,
>+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
>+ )
>+{
>+ EFI_STATUS Status;
>+ EFI_USB_IO_PROTOCOL *UsbIo;
>+
>+ Status = gBS->OpenProtocol (
>+ ControllerHandle,
>+ &gEfiUsbIoProtocolGuid,
>+ (VOID **)&UsbIo,
>+ This->DriverBindingHandle,
>+ ControllerHandle,
>+ EFI_OPEN_PROTOCOL_BY_DRIVER
>+ );
>+ if (EFI_ERROR (Status)) {
>+ return Status;
>+ }
>+
>+ Status = IsSupportedDevice (UsbIo) ? EFI_SUCCESS : EFI_UNSUPPORTED;
>+
>+ gBS->CloseProtocol (
>+ ControllerHandle,
>+ &gEfiUsbIoProtocolGuid,
>+ This->DriverBindingHandle,
>+ ControllerHandle
>+ );
>+ return Status;
>+}
>+
>+/**
>+ Check if the USB NCM and USB CDC Data interfaces are from the same device.
>+
>+ @param[in] UsbEthPath A pointer to the EFI_DEVICE_PATH_PROTOCOL instance.
>+ @param[in] UsbCdcDataPath A pointer to the EFI_DEVICE_PATH_PROTOCOL instance.
>+
>+ @retval EFI_SUCCESS Is the same device.
>+ @retval EFI_NOT_FOUND Is not the same device.
>+
>+**/
>+EFI_STATUS
>+IsSameDevice (
>+ IN EFI_DEVICE_PATH_PROTOCOL *UsbEthPath,
>+ IN EFI_DEVICE_PATH_PROTOCOL *UsbCdcDataPath
>+ )
>+{
>+ while (1) {
>+ if ((UsbEthPath->Type == ACPI_DEVICE_PATH) && (UsbEthPath->SubType == ACPI_DP)) {
>+ if (CompareMem ((ACPI_HID_DEVICE_PATH *)UsbCdcDataPath, (ACPI_HID_DEVICE_PATH *)UsbEthPath, sizeof (ACPI_HID_DEVICE_PATH))) {
>+ return EFI_NOT_FOUND;
>+ }
>+ }
>+
>+ if ((UsbEthPath->Type == HARDWARE_DEVICE_PATH) && (UsbEthPath->SubType == HW_PCI_DP)) {
>+ if (CompareMem ((PCI_DEVICE_PATH *)UsbCdcDataPath, (PCI_DEVICE_PATH *)UsbEthPath, sizeof (PCI_DEVICE_PATH))) {
>+ return EFI_NOT_FOUND;
>+ }
>+ }
>+
>+ if ((UsbEthPath->Type == MESSAGING_DEVICE_PATH) && (UsbEthPath->SubType == MSG_USB_DP)) {
>+ if (IsDevicePathEnd (NextDevicePathNode (UsbEthPath))) {
>+ if (((USB_DEVICE_PATH *)UsbEthPath)->ParentPortNumber ==
>+ ((USB_DEVICE_PATH *)UsbCdcDataPath)->ParentPortNumber)
>+ {
>+ return EFI_SUCCESS;
>+ } else {
>+ return EFI_NOT_FOUND;
>+ }
>+ } else {
>+ if (CompareMem ((USB_DEVICE_PATH *)UsbCdcDataPath, (USB_DEVICE_PATH *)UsbEthPath, sizeof (USB_DEVICE_PATH))) {
>+ return EFI_NOT_FOUND;
>+ }
>+ }
>+ }
>+
>+ UsbEthPath = NextDevicePathNode (UsbEthPath);
>+ UsbCdcDataPath = NextDevicePathNode (UsbCdcDataPath);
>+ }
>+}
>+
>+/**
>+ Check if the USB CDC Data(UsbIo) installed and return USB CDC Data Handle.
>+
>+ @param[in] UsbEthPath A pointer to the EFI_DEVICE_PATH_PROTOCOL instance.
>+ @param[in, out] UsbCdcDataHandle A pointer to the EFI_HANDLE for USB CDC Data.
>+
>+ @retval TRUE USB CDC Data(UsbIo) installed.
>+ @retval FALSE USB CDC Data(UsbIo) did not installed.
>+
>+**/
>+BOOLEAN
>+IsUsbCdcData (
>+ IN EFI_DEVICE_PATH_PROTOCOL *UsbEthPath,
>+ IN OUT EFI_HANDLE *UsbCdcDataHandle
>+ )
>+{
>+ EFI_STATUS Status;
>+ UINTN Index;
>+ UINTN HandleCount;
>+ EFI_HANDLE *HandleBuffer;
>+ EFI_USB_IO_PROTOCOL *UsbIo;
>+ EFI_USB_INTERFACE_DESCRIPTOR Interface;
>+ EFI_DEVICE_PATH_PROTOCOL *UsbCdcDataPath;
>+
>+ Status = gBS->LocateHandleBuffer (
>+ ByProtocol,
>+ &gEfiUsbIoProtocolGuid,
>+ NULL,
>+ &HandleCount,
>+ &HandleBuffer
>+ );
>+ if (EFI_ERROR (Status)) {
>+ return FALSE;
>+ }
>+
>+ for (Index = 0; Index < HandleCount; Index++) {
>+ Status = gBS->HandleProtocol (
>+ HandleBuffer[Index],
>+ &gEfiUsbIoProtocolGuid,
>+ (VOID **)&UsbIo
>+ );
>+ ASSERT_EFI_ERROR (Status);
>+
>+ Status = UsbIo->UsbGetInterfaceDescriptor (UsbIo, &Interface);
>+ ASSERT_EFI_ERROR (Status);
>+
>+ if ((Interface.InterfaceClass == USB_CDC_DATA_CLASS) &&
>+ (Interface.InterfaceSubClass == USB_CDC_DATA_SUBCLASS) &&
>+ (Interface.InterfaceProtocol == USB_NCM_NTB_PROTOCOL))
>+ {
>+ Status = gBS->HandleProtocol (
>+ HandleBuffer[Index],
>+ &gEfiDevicePathProtocolGuid,
>+ (VOID **)&UsbCdcDataPath
>+ );
>+ if (EFI_ERROR (Status)) {
>+ continue;
>+ }
>+
>+ Status = IsSameDevice (UsbEthPath, UsbCdcDataPath);
>+ if (!EFI_ERROR (Status)) {
>+ CopyMem (UsbCdcDataHandle, &HandleBuffer[Index], sizeof (EFI_HANDLE));
>+ FreePool (HandleBuffer);
>+ return TRUE;
>+ }
>+ }
>+ }
>+
>+ FreePool (HandleBuffer);
>+ return FALSE;
>+}
>+
>+/**
>+ Call Back Function.
>+
>+ @param[in] Event Event whose notification function is being invoked.
>+ @param[in] Context The pointer to the notification function's context,
>+ which is implementation-dependent.
>+
>+**/
>+VOID
>+EFIAPI
>+CallbackFunction (
>+ IN EFI_EVENT Event,
>+ IN VOID *Context
>+ )
>+{
>+ EFI_STATUS Status;
>+ UINTN Index;
>+ UINTN HandleCount;
>+ EFI_HANDLE *HandleBuffer;
>+ EFI_USB_IO_PROTOCOL *UsbIo;
>+ EFI_USB_INTERFACE_DESCRIPTOR Interface;
>+
>+ Status = gBS->LocateHandleBuffer (
>+ ByProtocol,
>+ &gEfiUsbIoProtocolGuid,
>+ NULL,
>+ &HandleCount,
>+ &HandleBuffer
>+ );
>+ if (EFI_ERROR (Status)) {
>+ return;
>+ }
>+
>+ for (Index = 0; Index < HandleCount; Index++) {
>+ Status = gBS->HandleProtocol (
>+ HandleBuffer[Index],
>+ &gEfiUsbIoProtocolGuid,
>+ (VOID **)&UsbIo
>+ );
>+ ASSERT_EFI_ERROR (Status);
>+
>+ Status = UsbIo->UsbGetInterfaceDescriptor (UsbIo, &Interface);
>+ ASSERT_EFI_ERROR (Status);
>+
>+ if ((Interface.InterfaceClass == USB_CDC_CLASS) &&
>+ (Interface.InterfaceSubClass == USB_CDC_NCM_SUBCLASS) &&
>+ (Interface.InterfaceProtocol == USB_NO_CLASS_PROTOCOL))
>+ {
>+ gBS->ConnectController (HandleBuffer[Index], NULL, NULL, TRUE);
>+ }
>+ }
>+
>+ FreePool (HandleBuffer);
>+ gBS->CloseEvent (Event);
>+}
>+
>+/**
>+ USB NCM Driver Binding Start.
>+
>+ @param[in] This Protocol instance pointer.
>+ @param[in] ControllerHandle Handle of device to bind driver to.
>+ @param[in] RemainingDevicePath Optional parameter use to pick a specific child
>+ device to start.
>+
>+ @retval EFI_SUCCESS This driver is added to ControllerHandle
>+ @retval EFI_DEVICE_ERROR This driver could not be started due to a device error
>+ @retval EFI_OUT_OF_RESOURCES The driver could not install successfully due to a lack of resources.
>+ @retval other This driver does not support this device
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+UsbNcmDriverStart (
>+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
>+ IN EFI_HANDLE ControllerHandle,
>+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
>+ )
>+{
>+ EFI_STATUS Status;
>+ VOID *Reg;
>+ EFI_EVENT Event;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+ EFI_DEVICE_PATH_PROTOCOL *UsbEthPath;
>+ EFI_HANDLE UsbCdcDataHandle;
>+ EFI_USB_IO_PROTOCOL *UsbIo;
>+ EFI_USB_INTERFACE_DESCRIPTOR Interface;
>+
>+ Status = gBS->OpenProtocol (
>+ ControllerHandle,
>+ &gEfiUsbIoProtocolGuid,
>+ (VOID **)&UsbIo,
>+ This->DriverBindingHandle,
>+ ControllerHandle,
>+ EFI_OPEN_PROTOCOL_BY_DRIVER
>+ );
>+ if (EFI_ERROR (Status)) {
>+ return Status;
>+ }
>+
>+ Status = gBS->OpenProtocol (
>+ ControllerHandle,
>+ &gEfiDevicePathProtocolGuid,
>+ (VOID **)&UsbEthPath,
>+ This->DriverBindingHandle,
>+ ControllerHandle,
>+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
>+ );
>+ if (EFI_ERROR (Status)) {
>+ gBS->CloseProtocol (
>+ ControllerHandle,
>+ &gEfiUsbIoProtocolGuid,
>+ This->DriverBindingHandle,
>+ ControllerHandle
>+ );
>+ return Status;
>+ }
>+
>+ Status = IsUsbCdcData (UsbEthPath, &UsbCdcDataHandle) ? EFI_SUCCESS : EFI_UNSUPPORTED;
>+ if (EFI_ERROR (Status)) {
>+ gBS->CloseProtocol (
>+ ControllerHandle,
>+ &gEfiUsbIoProtocolGuid,
>+ This->DriverBindingHandle,
>+ ControllerHandle
>+ );
>+
>+ Status = gBS->CreateEvent (EVT_NOTIFY_SIGNAL, TPL_CALLBACK, CallbackFunction, NULL, &Event);
>+ if (EFI_ERROR (Status)) {
>+ return Status;
>+ }
>+
>+ Status = gBS->RegisterProtocolNotify (&gEfiUsbIoProtocolGuid, Event, &Reg);
>+ return Status;
>+ }
>+
>+ UsbEthDriver = AllocateZeroPool (sizeof (USB_ETHERNET_DRIVER));
>+ if (!UsbEthDriver) {
>+ gBS->CloseProtocol (
>+ ControllerHandle,
>+ &gEfiUsbIoProtocolGuid,
>+ This->DriverBindingHandle,
>+ ControllerHandle
>+ );
>+ return EFI_OUT_OF_RESOURCES;
>+ }
>+
>+ Status = LoadAllDescriptor (UsbIo, &UsbEthDriver->Config);
>+ ASSERT_EFI_ERROR (Status);
>+
>+ GetEndpoint (UsbIo, UsbEthDriver);
>+
>+ Status = UsbIo->UsbGetInterfaceDescriptor (UsbIo, &Interface);
>+ ASSERT_EFI_ERROR (Status);
>+
>+ UsbEthDriver->Signature = USB_ETHERNET_SIGNATURE;
>+ UsbEthDriver->NumOfInterface = Interface.InterfaceNumber;
>+ UsbEthDriver->UsbCdcDataHandle = UsbCdcDataHandle;
>+ UsbEthDriver->UsbIo = UsbIo;
>+ UsbEthDriver->UsbEth.UsbEthReceive = UsbEthNcmReceive;
>+ UsbEthDriver->UsbEth.UsbEthTransmit = UsbEthNcmTransmit;
>+ UsbEthDriver->UsbEth.UsbEthInterrupt = UsbEthNcmInterrupt;
>+ UsbEthDriver->UsbEth.UsbEthMacAddress = GetUsbEthMacAddress;
>+ UsbEthDriver->UsbEth.UsbEthMaxBulkSize = UsbEthNcmBulkSize;
>+ UsbEthDriver->UsbEth.UsbHeaderFunDescriptor = GetUsbHeaderFunDescriptor;
>+ UsbEthDriver->UsbEth.UsbUnionFunDescriptor = GetUsbUnionFunDescriptor;
>+ UsbEthDriver->UsbEth.UsbEthFunDescriptor = GetUsbEthFunDescriptor;
>+ UsbEthDriver->UsbEth.SetUsbEthMcastFilter = SetUsbEthMcastFilter;
>+ UsbEthDriver->UsbEth.SetUsbEthPowerPatternFilter = SetUsbEthPowerFilter;
>+ UsbEthDriver->UsbEth.GetUsbEthPowerPatternFilter = GetUsbEthPowerFilter;
>+ UsbEthDriver->UsbEth.SetUsbEthPacketFilter = SetUsbEthPacketFilter;
>+ UsbEthDriver->UsbEth.GetUsbEthStatistic = GetUsbEthStatistic;
>+
>+ UsbEthDriver->BulkBuffer = AllocateZeroPool (USB_NCM_MAX_NTB_SIZE);
>+
>+ Status = gBS->InstallProtocolInterface (
>+ &ControllerHandle,
>+ &gEdkIIUsbEthProtocolGuid,
>+ EFI_NATIVE_INTERFACE,
>+ &(UsbEthDriver->UsbEth)
>+ );
>+ if (EFI_ERROR (Status)) {
>+ gBS->CloseProtocol (
>+ ControllerHandle,
>+ &gEfiUsbIoProtocolGuid,
>+ This->DriverBindingHandle,
>+ ControllerHandle
>+ );
>+ FreePool (UsbEthDriver);
>+ return Status;
>+ }
>+
>+ return Status;
>+}
>+
>+/**
>+ USB NCM Driver Binding Stop.
>+
>+ @param[in] This Protocol instance pointer.
>+ @param[in] ControllerHandle Handle of device to stop driver on
>+ @param[in] NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
>+ children is zero stop the entire bus driver.
>+ @param[in] ChildHandleBuffer List of Child Handles to Stop.
>+
>+ @retval EFI_SUCCESS This driver is removed ControllerHandle
>+ @retval other This driver was not removed from this device
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+UsbNcmDriverStop (
>+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
>+ IN EFI_HANDLE ControllerHandle,
>+ IN UINTN NumberOfChildren,
>+ IN EFI_HANDLE *ChildHandleBuffer
>+ )
>+{
>+ EFI_STATUS Status;
>+ EDKII_USB_ETHERNET_PROTOCOL *UsbEthProtocol;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+
>+ Status = gBS->OpenProtocol (
>+ ControllerHandle,
>+ &gEdkIIUsbEthProtocolGuid,
>+ (VOID **)&UsbEthProtocol,
>+ This->DriverBindingHandle,
>+ ControllerHandle,
>+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
>+ );
>+ if (EFI_ERROR (Status)) {
>+ return Status;
>+ }
>+
>+ UsbEthDriver = USB_ETHERNET_DEV_FROM_THIS (UsbEthProtocol);
>+
>+ Status = gBS->UninstallProtocolInterface (
>+ ControllerHandle,
>+ &gEdkIIUsbEthProtocolGuid,
>+ UsbEthProtocol
>+ );
>+ if (EFI_ERROR (Status)) {
>+ return Status;
>+ }
>+
>+ Status = gBS->CloseProtocol (
>+ ControllerHandle,
>+ &gEfiUsbIoProtocolGuid,
>+ This->DriverBindingHandle,
>+ ControllerHandle
>+ );
>+ FreePool (UsbEthDriver->Config);
>+ FreePool (UsbEthDriver->BulkBuffer);
>+ FreePool (UsbEthDriver);
>+ return Status;
>+}
>+
>+/**
>+ Entrypoint of NCM Driver.
>+
>+ This function is the entrypoint of NCM Driver. It installs Driver Binding
>+ Protocols together with Component Name Protocols.
>+
>+ @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.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+UsbNcmEntry (
>+ IN EFI_HANDLE ImageHandle,
>+ IN EFI_SYSTEM_TABLE *SystemTable
>+ )
>+{
>+ gUsbNcmDriverBinding.DriverBindingHandle = ImageHandle;
>+ gUsbNcmDriverBinding.ImageHandle = ImageHandle;
>+
>+ return gBS->InstallMultipleProtocolInterfaces (
>+ &gUsbNcmDriverBinding.DriverBindingHandle,
>+ &gEfiDriverBindingProtocolGuid,
>+ &gUsbNcmDriverBinding,
>+ &gEfiComponentName2ProtocolGuid,
>+ &gUsbNcmComponentName2,
>+ NULL
>+ );
>+}
>diff --git a/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.h b/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.h
>new file mode 100644
>index 0000000000..76f0452f57
>--- /dev/null
>+++ b/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.h
>@@ -0,0 +1,245 @@
>+/** @file
>+ Header file for USB Network Control Model driver
>+
>+ Copyright (c) 2023, American Megatrends International LLC. All rights reserved.<BR>
>+ SPDX-License-Identifier: BSD-2-Clause-Patent
>+**/
>+
>+#ifndef _USB_CDC_NCM_H_
>+#define _USB_CDC_NCM_H_
>+
>+#include <Library/UefiDriverEntryPoint.h>
>+#include <Library/UefiBootServicesTableLib.h>
>+#include <Library/UefiLib.h>
>+#include <Library/DevicePathLib.h>
>+#include <Library/DebugLib.h>
>+#include <Library/MemoryAllocationLib.h>
>+#include <Library/BaseMemoryLib.h>
>+#include <Library/UefiUsbLib.h>
>+#include <Protocol/UsbIo.h>
>+#include <Protocol/UsbEthernetProtocol.h>
>+
>+typedef struct {
>+ UINTN Signature;
>+ EDKII_USB_ETHERNET_PROTOCOL UsbEth;
>+ EFI_HANDLE UsbCdcDataHandle;
>+ EFI_USB_IO_PROTOCOL *UsbIo;
>+ EFI_USB_CONFIG_DESCRIPTOR *Config;
>+ UINT8 NumOfInterface;
>+ UINT8 BulkInEndpoint;
>+ UINT8 BulkOutEndpoint;
>+ UINT8 InterruptEndpoint;
>+ EFI_MAC_ADDRESS MacAddress;
>+ UINT16 BulkOutSequence;
>+ UINT8 *BulkBuffer;
>+ UINT8 TotalDatagram;
>+ UINT8 NowDatagram;
>+} USB_ETHERNET_DRIVER;
>+
>+#define USB_NCM_DRIVER_VERSION 1
>+#define USB_ETHERNET_BULK_TIMEOUT 1
>+#define USB_ETHERNET_TRANSFER_TIMEOUT 200
>+#define USB_NCM_MAX_NTB_SIZE 0xFFFF
>+#define USB_ETHERNET_FRAME_SIZE 0x5F2 // MAX ethernet frame size
>+
>+// Defined in USB NCM 1.0 spec., section 3.2 and 3.3
>+#define USB_NCM_NTH_SIGN_16 0x484D434E
>+#define USB_NCM_NDP_SIGN_16 0x304D434E
>+#define USB_NCM_NDP_SIGN_16_CRC 0x314D434E
>+#define USB_NCM_NTH_LENGTH 0x000C
>+#define USB_NCM_NDP_LENGTH 0x0010// at least 16
>+
>+// USB NCM Transfer header structure - UINT16
>+typedef struct {
>+ UINT32 Signature;
>+ UINT16 HeaderLength;
>+ UINT16 Sequence;
>+ UINT16 BlockLength;
>+ UINT16 NdpIndex;
>+} USB_NCM_TRANSFER_HEADER_16;
>+
>+// USB NCM Datagram pointer structure - UINT16
>+typedef struct {
>+ UINT32 Signature;
>+ UINT16 Length;
>+ UINT16 NextNdpIndex;
>+} USB_NCM_DATAGRAM_POINTER_16;
>+
>+// USB NCM Datagram structure
>+typedef struct {
>+ UINT16 DatagramIndex;
>+ UINT16 DatagramLength;
>+} USB_NCM_DATA_GRAM;
>+
>+#define USB_ETHERNET_SIGNATURE SIGNATURE_32('u', 'e', 't', 'h')
>+#define USB_ETHERNET_DEV_FROM_THIS(a) CR (a, USB_ETHERNET_DRIVER, UsbEth, USB_ETHERNET_SIGNATURE)
>+
>+typedef struct {
>+ UINT16 Src;
>+ UINT16 Dst;
>+} BIT_MAP;
>+
>+extern EFI_COMPONENT_NAME2_PROTOCOL gUsbNcmComponentName2;
>+
>+EFI_STATUS
>+EFIAPI
>+UsbNcmDriverSupported (
>+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
>+ IN EFI_HANDLE ControllerHandle,
>+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+UsbNcmDriverStart (
>+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
>+ IN EFI_HANDLE ControllerHandle,
>+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+UsbNcmDriverStop (
>+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
>+ IN EFI_HANDLE ControllerHandle,
>+ IN UINTN NumberOfChildren,
>+ IN EFI_HANDLE *ChildHandleBuffer
>+ );
>+
>+EFI_STATUS
>+LoadAllDescriptor (
>+ IN EFI_USB_IO_PROTOCOL *UsbIo,
>+ OUT EFI_USB_CONFIG_DESCRIPTOR **ConfigDesc
>+ );
>+
>+BOOLEAN
>+NextDescriptor (
>+ IN EFI_USB_CONFIG_DESCRIPTOR *Desc,
>+ IN OUT UINTN *Offset
>+ );
>+
>+EFI_STATUS
>+GetFunctionalDescriptor (
>+ IN EFI_USB_CONFIG_DESCRIPTOR *Config,
>+ IN UINT8 FunDescriptorType,
>+ OUT VOID *DataBuffer
>+ );
>+
>+VOID
>+GetEndpoint (
>+ IN EFI_USB_IO_PROTOCOL *UsbIo,
>+ IN OUT USB_ETHERNET_DRIVER *UsbEthDriver
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+UsbEthNcmReceive (
>+ IN PXE_CDB *Cdb,
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN OUT VOID *Packet,
>+ IN OUT UINTN *PacketLength
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+UsbEthNcmTransmit (
>+ IN PXE_CDB *Cdb,
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN VOID *Packet,
>+ IN OUT UINTN *PacketLength
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+UsbEthNcmInterrupt (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN BOOLEAN IsNewTransfer,
>+ IN UINTN PollingInterval,
>+ IN EFI_USB_DEVICE_REQUEST *Request
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+InterruptCallback (
>+ IN VOID *Data,
>+ IN UINTN DataLength,
>+ IN VOID *Context,
>+ IN UINT32 Status
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+GetUsbEthMacAddress (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ OUT EFI_MAC_ADDRESS *MacAddress
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+UsbEthNcmBulkSize (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ OUT UINTN *BulkSize
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+GetUsbHeaderFunDescriptor (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ OUT USB_HEADER_FUN_DESCRIPTOR *UsbHeaderFunDescriptor
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+GetUsbUnionFunDescriptor (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ OUT USB_UNION_FUN_DESCRIPTOR *UsbUnionFunDescriptor
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+GetUsbEthFunDescriptor (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ OUT USB_ETHERNET_FUN_DESCRIPTOR *UsbEthFunDescriptor
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+SetUsbEthMcastFilter (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN UINT16 Value,
>+ IN VOID *McastAddr
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+SetUsbEthPowerFilter (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN UINT16 Value,
>+ IN UINT16 Length,
>+ IN VOID *PatternFilter
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+GetUsbEthPowerFilter (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN UINT16 Value,
>+ OUT BOOLEAN *PatternActive
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+SetUsbEthPacketFilter (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN UINT16 Value
>+ );
>+
>+EFI_STATUS
>+EFIAPI
>+GetUsbEthStatistic (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN UINT16 FeatureSelector,
>+ OUT VOID *Statistic
>+ );
>+
>+#endif
>diff --git a/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.inf b/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.inf
>new file mode 100644
>index 0000000000..33154184b3
>--- /dev/null
>+++ b/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.inf
>@@ -0,0 +1,42 @@
>+## @file
>+# This is Usb Cdc Ncm driver for DXE phase.
>+#
>+# Copyright (c) 2023, American Megatrends International LLC. All rights reserved.<BR>
>+# SPDX-License-Identifier: BSD-2-Clause-Patent
>+##
>+
>+[Defines]
>+ INF_VERSION = 0x00010005
>+ BASE_NAME = UsbCdcNcm
>+ FILE_GUID = 52230d31-6c11-4442-b262-bec6bfe84efa
>+ MODULE_TYPE = UEFI_DRIVER
>+ VERSION_STRING = 1.0
>+ ENTRY_POINT = UsbNcmEntry
>+
>+[Sources]
>+ UsbCdcNcm.c
>+ UsbCdcNcm.h
>+ UsbNcmFunction.c
>+ ComponentName.c
>+
>+[Packages]
>+ MdePkg/MdePkg.dec
>+ MdeModulePkg/MdeModulePkg.dec
>+
>+[LibraryClasses]
>+ UefiDriverEntryPoint
>+ UefiBootServicesTableLib
>+ UefiLib
>+ DebugLib
>+ UefiUsbLib
>+ MemoryAllocationLib
>+ BaseMemoryLib
>+
>+[Protocols]
>+ gEfiUsbIoProtocolGuid
>+ gEfiDevicePathProtocolGuid
>+ gEfiDriverBindingProtocolGuid
>+ gEdkIIUsbEthProtocolGuid
>+
>+[Depex]
>+ TRUE
>diff --git a/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbNcmFunction.c b/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbNcmFunction.c
>new file mode 100644
>index 0000000000..d5975b7942
>--- /dev/null
>+++ b/MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbNcmFunction.c
>@@ -0,0 +1,966 @@
>+/** @file
>+ This file contains code for USB Ethernet descriptor
>+ and specific requests implement.
>+
>+ Copyright (c) 2023, American Megatrends International LLC. All rights reserved.<BR>
>+ SPDX-License-Identifier: BSD-2-Clause-Patent
>+**/
>+
>+#include "UsbCdcNcm.h"
>+
>+/**
>+ Load All of device descriptor.
>+
>+ @param[in] UsbIo A pointer to the EFI_USB_IO_PROTOCOL instance.
>+ @param[out] ConfigDesc A pointer to the configuration descriptor.
>+
>+ @retval EFI_SUCCESS The request executed successfully.
>+ @retval EFI_OUT_OF_RESOURCES The request could not be completed because the
>+ buffer specified by DescriptorLength and Descriptor
>+ is not large enough to hold the result of the request.
>+ @retval EFI_TIMEOUT A timeout occurred executing the request.
>+ @retval EFI_DEVICE_ERROR The request failed due to a device error. The transfer
>+ status is returned in Status.
>+
>+**/
>+EFI_STATUS
>+LoadAllDescriptor (
>+ IN EFI_USB_IO_PROTOCOL *UsbIo,
>+ OUT EFI_USB_CONFIG_DESCRIPTOR **ConfigDesc
>+ )
>+{
>+ EFI_STATUS Status;
>+ UINT32 TransStatus;
>+ EFI_USB_CONFIG_DESCRIPTOR Tmp;
>+
>+ Status = UsbIo->UsbGetConfigDescriptor (UsbIo, &Tmp);
>+ ASSERT_EFI_ERROR (Status);
>+
>+ Status = gBS->AllocatePool (EfiBootServicesData, Tmp.TotalLength, (VOID **)ConfigDesc);
>+ ASSERT_EFI_ERROR (Status);
>+
>+ Status = UsbGetDescriptor (
>+ UsbIo,
>+ USB_DESC_TYPE_CONFIG << 8 | (Tmp.ConfigurationValue - 1), // zero based
>+ 0,
>+ Tmp.TotalLength,
>+ *ConfigDesc,
>+ &TransStatus
>+ );
>+ return Status;
>+}
>+
>+/**
>+ Returns pointer to the next descriptor for the pack of USB descriptors
>+ located in continues memory segment
>+
>+ @param[in] Desc A pointer to the CONFIG_DESCRIPTOR instance.
>+ @param[in, out] Offset A pointer to the sum of descriptor length.
>+
>+ @retval TRUE The request executed successfully.
>+ @retval FALSE No next descriptor.
>+
>+**/
>+BOOLEAN
>+NextDescriptor (
>+ IN EFI_USB_CONFIG_DESCRIPTOR *Desc,
>+ IN OUT UINTN *Offset
>+ )
>+{
>+ if ((Desc == NULL) || (*Offset >= Desc->TotalLength)) {
>+ return FALSE;
>+ }
>+
>+ if (((EFI_USB_CONFIG_DESCRIPTOR *)((char *)Desc+*Offset))->Length == 0) {
>+ return FALSE;
>+ }
>+
>+ *Offset += ((EFI_USB_CONFIG_DESCRIPTOR *)((char *)Desc+*Offset))->Length;
>+ if ( *Offset >= Desc->TotalLength ) {
>+ return FALSE;
>+ }
>+
>+ return TRUE;
>+}
>+
>+/**
>+ Read Function descriptor
>+
>+ @param[in] Config A pointer to all of configuration.
>+ @param[in] FunDescriptorType USB CDC class descriptor SubType.
>+ @param[out] DataBuffer A pointer to the Data of corresponding to device capability.
>+
>+ @retval EFI_SUCCESS The device capability descriptor was retrieved
>+ successfully.
>+ @retval EFI_UNSUPPORTED No supported.
>+ @retval EFI_NOT_FOUND The device capability descriptor was not found.
>+
>+**/
>+EFI_STATUS
>+GetFunctionalDescriptor (
>+ IN EFI_USB_CONFIG_DESCRIPTOR *Config,
>+ IN UINT8 FunDescriptorType,
>+ OUT VOID *DataBuffer
>+ )
>+{
>+ EFI_STATUS Status;
>+ UINTN Offset;
>+ EFI_USB_INTERFACE_DESCRIPTOR *Interface;
>+
>+ Status = EFI_NOT_FOUND;
>+
>+ for (Offset = 0; NextDescriptor (Config, &Offset);) {
>+ Interface = (EFI_USB_INTERFACE_DESCRIPTOR *)((UINT8 *)Config + Offset);
>+ if (Interface->DescriptorType == CS_INTERFACE) {
>+ if (((USB_HEADER_FUN_DESCRIPTOR *)Interface)->DescriptorSubtype == FunDescriptorType) {
>+ switch (FunDescriptorType) {
>+ case HEADER_FUN_DESCRIPTOR:
>+ CopyMem (
>+ DataBuffer,
>+ (USB_HEADER_FUN_DESCRIPTOR *)Interface,
>+ sizeof (USB_HEADER_FUN_DESCRIPTOR)
>+ );
>+ return EFI_SUCCESS;
>+ case UNION_FUN_DESCRIPTOR:
>+ CopyMem (
>+ DataBuffer,
>+ (USB_UNION_FUN_DESCRIPTOR *)Interface,
>+ ((USB_UNION_FUN_DESCRIPTOR *)Interface)->FunctionLength
>+ );
>+ return EFI_SUCCESS;
>+ case ETHERNET_FUN_DESCRIPTOR:
>+ CopyMem (
>+ DataBuffer,
>+ (USB_ETHERNET_FUN_DESCRIPTOR *)Interface,
>+ sizeof (USB_ETHERNET_FUN_DESCRIPTOR)
>+ );
>+ return EFI_SUCCESS;
>+ default:
>+ Status = EFI_UNSUPPORTED;
>+ break;
>+ }
>+ }
>+ }
>+ }
>+
>+ return Status;
>+}
>+
>+/**
>+ Get USB Ethernet IO endpoint and USB CDC data IO endpoint.
>+
>+ @param[in] UsbIo A pointer to the EFI_USB_IO_PROTOCOL instance.
>+ @param[in, out] UsbEthDriver A pointer to the USB_ETHERNET_DRIVER instance.
>+
>+**/
>+VOID
>+GetEndpoint (
>+ IN EFI_USB_IO_PROTOCOL *UsbIo,
>+ IN OUT USB_ETHERNET_DRIVER *UsbEthDriver
>+ )
>+{
>+ EFI_STATUS Status;
>+ UINT8 Index;
>+ UINT32 Result;
>+ EFI_USB_INTERFACE_DESCRIPTOR Interface;
>+ EFI_USB_ENDPOINT_DESCRIPTOR Endpoint;
>+
>+ Status = UsbIo->UsbGetInterfaceDescriptor (UsbIo, &Interface);
>+ ASSERT_EFI_ERROR (Status);
>+
>+ if (Interface.NumEndpoints == 0) {
>+ Status = UsbSetInterface (UsbIo, Interface.InterfaceNumber, 1, &Result);
>+ ASSERT_EFI_ERROR (Status);
>+
>+ Status = UsbIo->UsbGetInterfaceDescriptor (UsbIo, &Interface);
>+ ASSERT_EFI_ERROR (Status);
>+ }
>+
>+ for (Index = 0; Index < Interface.NumEndpoints; Index++) {
>+ Status = UsbIo->UsbGetEndpointDescriptor (UsbIo, Index, &Endpoint);
>+ ASSERT_EFI_ERROR (Status);
>+
>+ switch ((Endpoint.Attributes & (BIT0 | BIT1))) {
>+ case USB_ENDPOINT_BULK:
>+ if (Endpoint.EndpointAddress & BIT7) {
>+ UsbEthDriver->BulkInEndpoint = Endpoint.EndpointAddress;
>+ } else {
>+ UsbEthDriver->BulkOutEndpoint = Endpoint.EndpointAddress;
>+ }
>+
>+ break;
>+ case USB_ENDPOINT_INTERRUPT:
>+ UsbEthDriver->InterruptEndpoint = Endpoint.EndpointAddress;
>+ break;
>+ }
>+ }
>+}
>+
>+/**
>+ This function is used to manage a USB device with the bulk transfer pipe. The endpoint is Bulk in.
>+
>+ @param[in] Cdb A pointer to the command descriptor block.
>+ @param[in] This A pointer to the EDKII_USB_ETHERNET_PROTOCOL instance.
>+ @param[in, out] Packet A pointer to the buffer of data that will be transmitted to USB
>+ device or received from USB device.
>+ @param[in, out] PacketLength A pointer to the PacketLength.
>+
>+ @retval EFI_SUCCESS The bulk transfer has been successfully executed.
>+ @retval EFI_DEVICE_ERROR The transfer failed. The transfer status is returned in status.
>+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
>+ @retval EFI_OUT_OF_RESOURCES The request could not be submitted due to a lack of resources.
>+ @retval EFI_TIMEOUT The control transfer fails due to timeout.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+UsbEthNcmReceive (
>+ IN PXE_CDB *Cdb,
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN OUT VOID *Packet,
>+ IN OUT UINTN *PacketLength
>+ )
>+{
>+ EFI_STATUS Status;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+ EFI_USB_IO_PROTOCOL *UsbIo;
>+ UINT32 TransStatus;
>+ UINT8 Index;
>+ UINTN BulkDataLength;
>+ UINTN TotalLength;
>+ USB_NCM_TRANSFER_HEADER_16 *Nth;
>+ USB_NCM_DATAGRAM_POINTER_16 *Ndp;
>+ USB_NCM_DATA_GRAM *Datagram;
>+
>+ UsbEthDriver = USB_ETHERNET_DEV_FROM_THIS (This);
>+ TotalLength = 0;
>+
>+ if (UsbEthDriver->TotalDatagram == UsbEthDriver->NowDatagram) {
>+ Status = gBS->HandleProtocol (
>+ UsbEthDriver->UsbCdcDataHandle,
>+ &gEfiUsbIoProtocolGuid,
>+ (VOID **)&UsbIo
>+ );
>+ if (EFI_ERROR (Status)) {
>+ return Status;
>+ }
>+
>+ if (UsbEthDriver->BulkInEndpoint == 0) {
>+ GetEndpoint (UsbIo, UsbEthDriver);
>+ }
>+
>+ BulkDataLength = USB_NCM_MAX_NTB_SIZE;
>+ SetMem (UsbEthDriver->BulkBuffer, BulkDataLength, 0);
>+ UsbEthDriver->NowDatagram = 0;
>+ UsbEthDriver->TotalDatagram = 0;
>+
>+ Status = UsbIo->UsbBulkTransfer (
>+ UsbIo,
>+ UsbEthDriver->BulkInEndpoint,
>+ UsbEthDriver->BulkBuffer,
>+ &BulkDataLength,
>+ USB_ETHERNET_BULK_TIMEOUT,
>+ &TransStatus
>+ );
>+ if (EFI_ERROR (Status)) {
>+ return Status;
>+ }
>+
>+ Nth = (USB_NCM_TRANSFER_HEADER_16 *)UsbEthDriver->BulkBuffer;
>+ Ndp = (USB_NCM_DATAGRAM_POINTER_16 *)((UINT8 *)UsbEthDriver->BulkBuffer + Nth->NdpIndex);
>+ Datagram = (USB_NCM_DATA_GRAM *)((UINT8 *)Ndp + sizeof (USB_NCM_DATAGRAM_POINTER_16));
>+ UsbEthDriver->TotalDatagram = (UINT8)((Ndp->Length - 8) / 4 - 1);
>+
>+ for (Index = 0; Index < UsbEthDriver->TotalDatagram; Index++) {
>+ TotalLength += Datagram->DatagramLength;
>+ Datagram = (USB_NCM_DATA_GRAM *)((UINT8 *)Datagram + sizeof (USB_NCM_DATA_GRAM));
>+ }
>+
>+ if (TotalLength < USB_ETHERNET_FRAME_SIZE) {
>+ Datagram = (USB_NCM_DATA_GRAM *)((UINT8 *)Ndp + sizeof (USB_NCM_DATAGRAM_POINTER_16));
>+
>+ TotalLength = 0;
>+ for (Index = 0; Index < UsbEthDriver->TotalDatagram; Index++) {
>+ CopyMem ((UINT8 *)Packet + TotalLength, (UINT8 *)UsbEthDriver->BulkBuffer + Datagram->DatagramIndex, Datagram->DatagramLength);
>+ TotalLength += Datagram->DatagramLength;
>+ Datagram = (USB_NCM_DATA_GRAM *)((UINT8 *)Datagram + sizeof (USB_NCM_DATA_GRAM));
>+ }
>+
>+ *PacketLength = TotalLength;
>+ UsbEthDriver->NowDatagram = UsbEthDriver->TotalDatagram;
>+ } else {
>+ UsbEthDriver->NowDatagram++;
>+
>+ Datagram = (USB_NCM_DATA_GRAM *)((UINT8 *)Ndp + sizeof (USB_NCM_DATAGRAM_POINTER_16));
>+ CopyMem (Packet, (UINT8 *)UsbEthDriver->BulkBuffer + Datagram->DatagramIndex, Datagram->DatagramLength);
>+ *PacketLength = Datagram->DatagramLength;
>+ }
>+
>+ return Status;
>+ } else {
>+ UsbEthDriver->NowDatagram++;
>+
>+ Nth = (USB_NCM_TRANSFER_HEADER_16 *)UsbEthDriver->BulkBuffer;
>+ Ndp = (USB_NCM_DATAGRAM_POINTER_16 *)((UINT8 *)UsbEthDriver->BulkBuffer + Nth->NdpIndex);
>+ Datagram = (USB_NCM_DATA_GRAM *)((UINT8 *)Ndp + sizeof (USB_NCM_DATAGRAM_POINTER_16));
>+ Datagram = (USB_NCM_DATA_GRAM *)((UINT8 *)Datagram + sizeof (USB_NCM_DATA_GRAM) * (UsbEthDriver->NowDatagram - 1));
>+
>+ CopyMem (Packet, (UINT8 *)UsbEthDriver->BulkBuffer + Datagram->DatagramIndex, Datagram->DatagramLength);
>+ *PacketLength = Datagram->DatagramLength;
>+
>+ return EFI_SUCCESS;
>+ }
>+}
>+
>+/**
>+ This function is used to manage a USB device with the bulk transfer pipe. The endpoint is Bulk out.
>+
>+ @param[in] Cdb A pointer to the command descriptor block.
>+ @param[in] This A pointer to the EDKII_USB_ETHERNET_PROTOCOL instance.
>+ @param[in] Packet A pointer to the buffer of data that will be transmitted to USB
>+ device or received from USB device.
>+ @param[in, out] PacketLength A pointer to the PacketLength.
>+
>+ @retval EFI_SUCCESS The bulk transfer has been successfully executed.
>+ @retval EFI_DEVICE_ERROR The transfer failed. The transfer status is returned in status.
>+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
>+ @retval EFI_OUT_OF_RESOURCES The request could not be submitted due to a lack of resources.
>+ @retval EFI_TIMEOUT The control transfer fails due to timeout.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+UsbEthNcmTransmit (
>+ IN PXE_CDB *Cdb,
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN VOID *Packet,
>+ IN OUT UINTN *PacketLength
>+ )
>+{
>+ EFI_STATUS Status;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+ EFI_USB_IO_PROTOCOL *UsbIo;
>+ UINT32 TransStatus;
>+ USB_NCM_TRANSFER_HEADER_16 *Nth;
>+ USB_NCM_DATAGRAM_POINTER_16 *Ndp;
>+ USB_NCM_DATA_GRAM *Datagram;
>+ UINT8 *TotalPacket;
>+ UINTN TotalLength;
>+
>+ UsbEthDriver = USB_ETHERNET_DEV_FROM_THIS (This);
>+
>+ Status = gBS->HandleProtocol (
>+ UsbEthDriver->UsbCdcDataHandle,
>+ &gEfiUsbIoProtocolGuid,
>+ (VOID **)&UsbIo
>+ );
>+ if (EFI_ERROR (Status)) {
>+ return Status;
>+ }
>+
>+ if (UsbEthDriver->BulkOutEndpoint == 0) {
>+ GetEndpoint (UsbIo, UsbEthDriver);
>+ }
>+
>+ TotalLength = (UINTN)(USB_NCM_NTH_LENGTH + USB_NCM_NDP_LENGTH + (*PacketLength));
>+
>+ Status = gBS->AllocatePool (EfiBootServicesData, TotalLength, (VOID **)&TotalPacket);
>+ if (EFI_ERROR (Status)) {
>+ return Status;
>+ }
>+
>+ SetMem (TotalPacket, TotalLength, 0);
>+
>+ Nth = (USB_NCM_TRANSFER_HEADER_16 *)TotalPacket;
>+ Nth->Signature = USB_NCM_NTH_SIGN_16;
>+ Nth->HeaderLength = USB_NCM_NTH_LENGTH;
>+ Nth->Sequence = UsbEthDriver->BulkOutSequence++;
>+ Nth->BlockLength = (UINT16)TotalLength;
>+ Nth->NdpIndex = Nth->HeaderLength;
>+
>+ Ndp = (USB_NCM_DATAGRAM_POINTER_16 *)((UINT8 *)TotalPacket + Nth->NdpIndex);
>+ Ndp->Signature = USB_NCM_NDP_SIGN_16;
>+ Ndp->Length = USB_NCM_NDP_LENGTH;
>+ Ndp->NextNdpIndex = 0x00;
>+
>+ Datagram = (USB_NCM_DATA_GRAM *)((UINT8 *)Ndp + sizeof (USB_NCM_DATAGRAM_POINTER_16));
>+ Datagram->DatagramIndex = Nth->HeaderLength + Ndp->Length;
>+ Datagram->DatagramLength = (UINT16)*PacketLength;
>+
>+ CopyMem (TotalPacket + Datagram->DatagramIndex, Packet, *PacketLength);
>+
>+ *PacketLength = TotalLength;
>+
>+ Status = UsbIo->UsbBulkTransfer (
>+ UsbIo,
>+ UsbEthDriver->BulkOutEndpoint,
>+ TotalPacket,
>+ PacketLength,
>+ USB_ETHERNET_BULK_TIMEOUT,
>+ &TransStatus
>+ );
>+ FreePool (TotalPacket);
>+ return Status;
>+}
>+
>+/**
>+ Async USB transfer callback routine.
>+
>+ @param[in] Data Data received or sent via the USB Asynchronous Transfer, if the
>+ transfer completed successfully.
>+ @param[in] DataLength The length of Data received or sent via the Asynchronous
>+ Transfer, if transfer successfully completes.
>+ @param[in] Context Data passed from UsbAsyncInterruptTransfer() request.
>+ @param[in] Status Indicates the result of the asynchronous transfer.
>+
>+ @retval EFI_SUCCESS The asynchronous USB transfer request has been successfully executed.
>+ @retval EFI_DEVICE_ERROR The asynchronous USB transfer request failed.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+InterruptCallback (
>+ IN VOID *Data,
>+ IN UINTN DataLength,
>+ IN VOID *Context,
>+ IN UINT32 Status
>+ )
>+{
>+ if ((Data == NULL) || (Context == NULL)) {
>+ return EFI_INVALID_PARAMETER;
>+ }
>+
>+ if (((EFI_USB_DEVICE_REQUEST *)Data)->Request == USB_CDC_NETWORK_CONNECTION) {
>+ CopyMem (
>+ (EFI_USB_DEVICE_REQUEST *)Context,
>+ (EFI_USB_DEVICE_REQUEST *)Data,
>+ sizeof (EFI_USB_DEVICE_REQUEST)
>+ );
>+ }
>+
>+ return EFI_SUCCESS;
>+}
>+
>+/**
>+ This function is used to manage a USB device with an interrupt transfer pipe.
>+
>+ @param[in] This A pointer to the EDKII_USB_ETHERNET_PROTOCOL instance.
>+ @param[in] IsNewTransfer If TRUE, a new transfer will be submitted to USB controller. If
>+ FALSE, the interrupt transfer is deleted from the device's interrupt
>+ transfer queue.
>+ @param[in] PollingInterval Indicates the periodic rate, in milliseconds, that the transfer is to be
>+ executed.This parameter is required when IsNewTransfer is TRUE. The
>+ value must be between 1 to 255, otherwise EFI_INVALID_PARAMETER is returned.
>+ The units are in milliseconds.
>+ @param[in] Request A pointer to the EFI_USB_DEVICE_REQUEST data.
>+
>+ @retval EFI_SUCCESS The asynchronous USB transfer request transfer has been successfully executed.
>+ @retval EFI_DEVICE_ERROR The asynchronous USB transfer request failed.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+UsbEthNcmInterrupt (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN BOOLEAN IsNewTransfer,
>+ IN UINTN PollingInterval,
>+ IN EFI_USB_DEVICE_REQUEST *Request
>+ )
>+{
>+ EFI_STATUS Status;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+ UINTN DataLength;
>+
>+ UsbEthDriver = USB_ETHERNET_DEV_FROM_THIS (This);
>+ DataLength = 0;
>+
>+ if (IsNewTransfer == TRUE) {
>+ DataLength = sizeof (EFI_USB_DEVICE_REQUEST) + sizeof (USB_CONNECT_SPEED_CHANGE);
>+ Status = UsbEthDriver->UsbIo->UsbAsyncInterruptTransfer (
>+ UsbEthDriver->UsbIo,
>+ UsbEthDriver->InterruptEndpoint,
>+ IsNewTransfer,
>+ PollingInterval,
>+ DataLength,
>+ (EFI_ASYNC_USB_TRANSFER_CALLBACK)InterruptCallback,
>+ Request
>+ );
>+ } else {
>+ Status = UsbEthDriver->UsbIo->UsbAsyncInterruptTransfer (
>+ UsbEthDriver->UsbIo,
>+ UsbEthDriver->InterruptEndpoint,
>+ IsNewTransfer,
>+ 0,
>+ 0,
>+ NULL,
>+ NULL
>+ );
>+ }
>+
>+ return Status;
>+}
>+
>+/**
>+ Retrieves the USB Ethernet Mac Address.
>+
>+ @param[in] This A pointer to the EDKII_USB_ETHERNET_PROTOCOL instance.
>+ @param[out] MacAddress A pointer to the caller allocated USB Ethernet Mac Address.
>+
>+ @retval EFI_SUCCESS The USB Header Functional descriptor was retrieved successfully.
>+ @retval EFI_INVALID_PARAMETER UsbHeaderFunDescriptor is NULL.
>+ @retval EFI_NOT_FOUND The USB Header Functional descriptor was not found.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+GetUsbEthMacAddress (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ OUT EFI_MAC_ADDRESS *MacAddress
>+ )
>+{
>+ EFI_STATUS Status;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+ USB_ETHERNET_FUN_DESCRIPTOR UsbEthDescriptor;
>+ CHAR16 *Data;
>+ CHAR16 *DataPtr;
>+ CHAR16 TmpStr[1];
>+ UINT8 Index;
>+ UINT8 Hi;
>+ UINT8 Low;
>+
>+ UsbEthDriver = USB_ETHERNET_DEV_FROM_THIS (This);
>+
>+ Status = This->UsbEthFunDescriptor (This, &UsbEthDescriptor);
>+ if (EFI_ERROR (Status)) {
>+ DEBUG ((DEBUG_ERROR, "%a:UsbEthFunDescriptor status = %r\n", __func__, Status));
>+ return Status;
>+ }
>+
>+ Status = UsbEthDriver->UsbIo->UsbGetStringDescriptor (
>+ UsbEthDriver->UsbIo,
>+ 0x409, // English-US Language ID
>+ UsbEthDescriptor.MacAddress,
>+ &Data
>+ );
>+ if (EFI_ERROR (Status)) {
>+ DEBUG ((DEBUG_ERROR, "%a:UsbGetStringDescriptor status = %r\n", __func__, Status));
>+ return Status;
>+ }
>+
>+ DataPtr = Data;
>+ for (Index = 0; Index < PXE_HWADDR_LEN_ETHER; Index++) {
>+ CopyMem (TmpStr, DataPtr, sizeof (CHAR16));
>+ DataPtr++;
>+ Hi = (UINT8)StrHexToUintn (TmpStr);
>+ CopyMem (TmpStr, DataPtr, sizeof (CHAR16));
>+ DataPtr++;
>+ Low = (UINT8)StrHexToUintn (TmpStr);
>+ MacAddress->Addr[Index] = (Hi << 4) | Low;
>+ }
>+
>+ return Status;
>+}
>+
>+/**
>+ Get the USB NCM max NTB size.
>+
>+ @param[in] This A pointer to the EDKII_USB_ETHERNET_PROTOCOL instance.
>+ @param[out] BulkSize A pointer to the Bulk transfer data size.
>+
>+ @retval EFI_SUCCESS Get the USB NCM max NTB size successfully.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+UsbEthNcmBulkSize (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ OUT UINTN *BulkSize
>+ )
>+{
>+ *BulkSize = USB_NCM_MAX_NTB_SIZE;
>+ return EFI_SUCCESS;
>+}
>+
>+/**
>+ Retrieves the USB Header functional Descriptor.
>+
>+ @param[in] This A pointer to the EDKII_USB_ETHERNET_PROTOCOL instance.
>+ @param[out] UsbHeaderFunDescriptor A pointer to the caller allocated USB Header Functional Descriptor.
>+
>+ @retval EFI_SUCCESS The USB Header Functional descriptor was retrieved successfully.
>+ @retval EFI_INVALID_PARAMETER UsbHeaderFunDescriptor is NULL.
>+ @retval EFI_NOT_FOUND The USB Header Functional descriptor was not found.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+GetUsbHeaderFunDescriptor (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ OUT USB_HEADER_FUN_DESCRIPTOR *UsbHeaderFunDescriptor
>+ )
>+{
>+ EFI_STATUS Status;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+
>+ UsbEthDriver = USB_ETHERNET_DEV_FROM_THIS (This);
>+
>+ if (UsbHeaderFunDescriptor == NULL) {
>+ return EFI_INVALID_PARAMETER;
>+ }
>+
>+ Status = GetFunctionalDescriptor (UsbEthDriver->Config, HEADER_FUN_DESCRIPTOR, UsbHeaderFunDescriptor);
>+ return Status;
>+}
>+
>+/**
>+ Retrieves the USB Union functional Descriptor.
>+
>+ @param[in] This A pointer to the EDKII_USB_ETHERNET_PROTOCOL instance.
>+ @param[out] UsbUnionFunDescriptor A pointer to the caller allocated USB Union Functional Descriptor.
>+
>+ @retval EFI_SUCCESS The USB Union Functional descriptor was retrieved successfully.
>+ @retval EFI_INVALID_PARAMETER UsbUnionFunDescriptor is NULL.
>+ @retval EFI_NOT_FOUND The USB Union Functional descriptor was not found.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+GetUsbUnionFunDescriptor (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ OUT USB_UNION_FUN_DESCRIPTOR *UsbUnionFunDescriptor
>+ )
>+{
>+ EFI_STATUS Status;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+
>+ UsbEthDriver = USB_ETHERNET_DEV_FROM_THIS (This);
>+
>+ if (UsbUnionFunDescriptor == NULL) {
>+ return EFI_INVALID_PARAMETER;
>+ }
>+
>+ Status = GetFunctionalDescriptor (UsbEthDriver->Config, UNION_FUN_DESCRIPTOR, UsbUnionFunDescriptor);
>+ return Status;
>+}
>+
>+/**
>+ Retrieves the USB Ethernet functional Descriptor.
>+
>+ This function get the Mac Address, Ethernet statistics, maximum segment size,
>+ number of multicast filters, and number of pattern filters from Ethernet
>+ functional Descriptor.
>+
>+ @param[in] This A pointer to the EDKII_USB_ETHERNET_PROTOCOL instance.
>+ @param[out] UsbEthFunDescriptor A pointer to the caller allocated USB Ethernet Functional Descriptor.
>+
>+ @retval EFI_SUCCESS The USB Ethernet Functional descriptor was retrieved successfully.
>+ @retval EFI_INVALID_PARAMETER UsbEthFunDescriptor is NULL.
>+ @retval EFI_NOT_FOUND The USB Ethernet Functional descriptor was not found.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+GetUsbEthFunDescriptor (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ OUT USB_ETHERNET_FUN_DESCRIPTOR *UsbEthFunDescriptor
>+ )
>+{
>+ EFI_STATUS Status;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+
>+ UsbEthDriver = USB_ETHERNET_DEV_FROM_THIS (This);
>+
>+ if (UsbEthFunDescriptor == NULL) {
>+ return EFI_INVALID_PARAMETER;
>+ }
>+
>+ Status = GetFunctionalDescriptor (UsbEthDriver->Config, ETHERNET_FUN_DESCRIPTOR, UsbEthFunDescriptor);
>+ return Status;
>+}
>+
>+/**
>+ This request sets the Ethernet device multicast filters as specified in the
>+ sequential list of 48 bit Ethernet multicast addresses.
>+
>+ @param[in] This A pointer to the EDKII_USB_ETHERNET_PROTOCOL instance.
>+ @param[in] Value Number of filters.
>+ @param[in] McastAddr A pointer to the value of the multicast addresses.
>+
>+ @retval EFI_SUCCESS The request executed successfully.
>+ @retval EFI_TIMEOUT A timeout occurred executing the request.
>+ @retval EFI_DEVICE_ERROR The request failed due to a device error.
>+ @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
>+ @retval EFI_UNSUPPORTED Not supported.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+SetUsbEthMcastFilter (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN UINT16 Value,
>+ IN VOID *McastAddr
>+ )
>+{
>+ EFI_STATUS Status;
>+ EFI_USB_DEVICE_REQUEST Request;
>+ UINT32 TransStatus;
>+ USB_ETHERNET_FUN_DESCRIPTOR UsbEthFunDescriptor;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+
>+ UsbEthDriver = USB_ETHERNET_DEV_FROM_THIS (This);
>+
>+ Status = This->UsbEthFunDescriptor (This, &UsbEthFunDescriptor);
>+ if (EFI_ERROR (Status)) {
>+ return Status;
>+ }
>+
>+ if ((UsbEthFunDescriptor.NumberMcFilters << 1) == 0) {
>+ return EFI_UNSUPPORTED;
>+ }
>+
>+ Request.RequestType = USB_ETHERNET_SET_REQ_TYPE;
>+ Request.Request = SET_ETH_MULTICAST_FILTERS_REQ;
>+ Request.Value = Value;
>+ Request.Index = UsbEthDriver->NumOfInterface;
>+ Request.Length = Value * 6;
>+
>+ return UsbEthDriver->UsbIo->UsbControlTransfer (
>+ UsbEthDriver->UsbIo,
>+ &Request,
>+ EfiUsbDataOut,
>+ USB_ETHERNET_TRANSFER_TIMEOUT,
>+ McastAddr,
>+ Request.Length,
>+ &TransStatus
>+ );
>+}
>+
>+/**
>+ This request sets up the specified Ethernet power management pattern filter as
>+ described in the data structure.
>+
>+ @param[in] This A pointer to the EDKII_USB_ETHERNET_PROTOCOL instance.
>+ @param[in] Value Number of filters.
>+ @param[in] Length Size of the power management pattern filter data.
>+ @param[in] PatternFilter A pointer to the power management pattern filter structure.
>+
>+ @retval EFI_SUCCESS The request executed successfully.
>+ @retval EFI_TIMEOUT A timeout occurred executing the request.
>+ @retval EFI_DEVICE_ERROR The request failed due to a device error.
>+ @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
>+ @retval EFI_UNSUPPORTED Not supported.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+SetUsbEthPowerFilter (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN UINT16 Value,
>+ IN UINT16 Length,
>+ IN VOID *PatternFilter
>+ )
>+{
>+ EFI_USB_DEVICE_REQUEST Request;
>+ UINT32 TransStatus;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+
>+ UsbEthDriver = USB_ETHERNET_DEV_FROM_THIS (This);
>+
>+ Request.RequestType = USB_ETHERNET_SET_REQ_TYPE;
>+ Request.Request = SET_ETH_POWER_MANAGEMENT_PATTERN_FILTER_REQ;
>+ Request.Value = Value;
>+ Request.Index = UsbEthDriver->NumOfInterface;
>+ Request.Length = Length;
>+
>+ return UsbEthDriver->UsbIo->UsbControlTransfer (
>+ UsbEthDriver->UsbIo,
>+ &Request,
>+ EfiUsbDataOut,
>+ USB_ETHERNET_TRANSFER_TIMEOUT,
>+ PatternFilter,
>+ Length,
>+ &TransStatus
>+ );
>+}
>+
>+/**
>+ This request retrieves the status of the specified Ethernet power management
>+ pattern filter from the device.
>+
>+ @param[in] This A pointer to the EDKII_USB_ETHERNET_PROTOCOL instance.
>+ @param[in] Value The filter number.
>+ @param[out] PatternActive A pointer to the pattern active boolean.
>+
>+ @retval EFI_SUCCESS The request executed successfully.
>+ @retval EFI_TIMEOUT A timeout occurred executing the request.
>+ @retval EFI_DEVICE_ERROR The request failed due to a device error.
>+ @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
>+ @retval EFI_UNSUPPORTED Not supported.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+GetUsbEthPowerFilter (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN UINT16 Value,
>+ OUT BOOLEAN *PatternActive
>+ )
>+{
>+ EFI_USB_DEVICE_REQUEST Request;
>+ UINT32 TransStatus;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+
>+ UsbEthDriver = USB_ETHERNET_DEV_FROM_THIS (This);
>+
>+ Request.RequestType = USB_ETHERNET_GET_REQ_TYPE;
>+ Request.Request = GET_ETH_POWER_MANAGEMENT_PATTERN_FILTER_REQ;
>+ Request.Value = Value;
>+ Request.Index = UsbEthDriver->NumOfInterface;
>+ Request.Length = USB_ETH_POWER_FILTER_LENGTH;
>+
>+ return UsbEthDriver->UsbIo->UsbControlTransfer (
>+ UsbEthDriver->UsbIo,
>+ &Request,
>+ EfiUsbDataIn,
>+ USB_ETHERNET_TRANSFER_TIMEOUT,
>+ PatternActive,
>+ USB_ETH_POWER_FILTER_LENGTH,
>+ &TransStatus
>+ );
>+}
>+
>+BIT_MAP gTable[] = {
>+ { PXE_OPFLAGS_RECEIVE_FILTER_UNICAST, USB_ETH_PACKET_TYPE_DIRECTED },
>+ { PXE_OPFLAGS_RECEIVE_FILTER_BROADCAST, USB_ETH_PACKET_TYPE_BROADCAST },
>+ { PXE_OPFLAGS_RECEIVE_FILTER_FILTERED_MULTICAST, USB_ETH_PACKET_TYPE_MULTICAST },
>+ { PXE_OPFLAGS_RECEIVE_FILTER_PROMISCUOUS, USB_ETH_PACKET_TYPE_PROMISCUOUS },
>+ { PXE_OPFLAGS_RECEIVE_FILTER_ALL_MULTICAST, USB_ETH_PACKET_TYPE_ALL_MULTICAST },
>+};
>+
>+/**
>+ Convert value between PXE receive filter and USB ETH packet filter.
>+
>+ @param[in] Value PXE filter data.
>+ @param[out] CdcFilter A pointer to the Ethernet Packet Filter Bitmap value converted by PXE_OPFLAGS.
>+
>+**/
>+VOID
>+ConvertFilter (
>+ IN UINT16 Value,
>+ OUT UINT16 *CdcFilter
>+ )
>+{
>+ UINT32 Index;
>+ UINT32 Count;
>+
>+ Count = sizeof (gTable)/sizeof (gTable[0]);
>+
>+ for (Index = 0; (gTable[Index].Src != 0) && (Index < Count); Index++) {
>+ if (gTable[Index].Src & Value) {
>+ *CdcFilter |= gTable[Index].Dst;
>+ }
>+ }
>+}
>+
>+/**
>+ This request is used to configure device Ethernet packet filter settings.
>+
>+ @param[in] This A pointer to the EDKII_USB_ETHERNET_PROTOCOL instance.
>+ @param[in] Value Packet Filter Bitmap.
>+
>+ @retval EFI_SUCCESS The request executed successfully.
>+ @retval EFI_TIMEOUT A timeout occurred executing the request.
>+ @retval EFI_DEVICE_ERROR The request failed due to a device error.
>+ @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
>+ @retval EFI_UNSUPPORTED Not supported.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+SetUsbEthPacketFilter (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN UINT16 Value
>+ )
>+{
>+ EFI_USB_DEVICE_REQUEST Request;
>+ UINT32 TransStatus;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+ UINT16 CommandFilter;
>+
>+ UsbEthDriver = USB_ETHERNET_DEV_FROM_THIS (This);
>+ CommandFilter = 0;
>+
>+ ConvertFilter (Value, &CommandFilter);
>+
>+ Request.RequestType = USB_ETHERNET_SET_REQ_TYPE;
>+ Request.Request = SET_ETH_PACKET_FILTER_REQ;
>+ Request.Value = CommandFilter;
>+ Request.Index = UsbEthDriver->NumOfInterface;
>+ Request.Length = USB_ETH_PACKET_FILTER_LENGTH;
>+
>+ return UsbEthDriver->UsbIo->UsbControlTransfer (
>+ UsbEthDriver->UsbIo,
>+ &Request,
>+ EfiUsbNoData,
>+ USB_ETHERNET_TRANSFER_TIMEOUT,
>+ NULL,
>+ USB_ETH_PACKET_FILTER_LENGTH,
>+ &TransStatus
>+ );
>+}
>+
>+/**
>+ This request is used to retrieve a statistic based on the feature selector.
>+
>+ @param[in] This A pointer to the EDKII_USB_ETHERNET_PROTOCOL instance.
>+ @param[in] FeatureSelector Value of the feature selector.
>+ @param[out] Statistic A pointer to the 32 bit unsigned integer.
>+
>+ @retval EFI_SUCCESS The request executed successfully.
>+ @retval EFI_TIMEOUT A timeout occurred executing the request.
>+ @retval EFI_DEVICE_ERROR The request failed due to a device error.
>+ @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
>+ @retval EFI_UNSUPPORTED Not supported.
>+
>+**/
>+EFI_STATUS
>+EFIAPI
>+GetUsbEthStatistic (
>+ IN EDKII_USB_ETHERNET_PROTOCOL *This,
>+ IN UINT16 FeatureSelector,
>+ OUT VOID *Statistic
>+ )
>+{
>+ EFI_STATUS Status;
>+ EFI_USB_DEVICE_REQUEST Request;
>+ UINT32 TransStatus;
>+ USB_ETHERNET_FUN_DESCRIPTOR UsbEthFunDescriptor;
>+ USB_ETHERNET_DRIVER *UsbEthDriver;
>+
>+ UsbEthDriver = USB_ETHERNET_DEV_FROM_THIS (This);
>+
>+ Status = This->UsbEthFunDescriptor (This, &UsbEthFunDescriptor);
>+ if (EFI_ERROR (Status)) {
>+ return Status;
>+ }
>+
>+ if (UsbEthFunDescriptor.EthernetStatistics == 0) {
>+ return EFI_UNSUPPORTED;
>+ }
>+
>+ Request.RequestType = USB_ETHERNET_GET_REQ_TYPE;
>+ Request.Request = GET_ETH_STATISTIC_REQ;
>+ Request.Value = FeatureSelector;
>+ Request.Index = UsbEthDriver->NumOfInterface;
>+ Request.Length = USB_ETH_STATISTIC;
>+
>+ return UsbEthDriver->UsbIo->UsbControlTransfer (
>+ UsbEthDriver->UsbIo,
>+ &Request,
>+ EfiUsbDataIn,
>+ USB_ETHERNET_TRANSFER_TIMEOUT,
>+ Statistic,
>+ USB_ETH_STATISTIC,
>+ &TransStatus
>+ );
>+}
>diff --git a/MdeModulePkg/MdeModulePkg.dsc b/MdeModulePkg/MdeModulePkg.dsc
>index 5b1f50e9c0..f4a1440b64 100644
>--- a/MdeModulePkg/MdeModulePkg.dsc
>+++ b/MdeModulePkg/MdeModulePkg.dsc
>@@ -274,6 +274,10 @@
> MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf
> MdeModulePkg/Bus/Usb/UsbMouseAbsolutePointerDxe/UsbMouseAbsolutePointerDxe.inf
> MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouseDxe.inf
>+ MdeModulePkg/Bus/Usb/UsbNetwork/NetworkCommon/NetworkCommon.inf
>+ MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcEcm/UsbCdcEcm.inf
>+ MdeModulePkg/Bus/Usb/UsbNetwork/UsbCdcNcm/UsbCdcNcm.inf
>+ MdeModulePkg/Bus/Usb/UsbNetwork/UsbRndis/UsbRndis.inf
> MdeModulePkg/Bus/I2c/I2cDxe/I2cBusDxe.inf
> MdeModulePkg/Bus/I2c/I2cDxe/I2cHostDxe.inf
> MdeModulePkg/Bus/I2c/I2cDxe/I2cDxe.inf
>--
>2.35.1.windows.2
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