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audk/EdkModulePkg/Bus/Usb/UsbBus/Dxe/usbbus.c

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/*++
Copyright (c) 2006, 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:
UsbBus.c
Abstract:
USB Bus Driver
Revision History
--*/
#include "usbbus.h"
GLOBAL_REMOVE_IF_UNREFERENCED UINTN gUSBDebugLevel = EFI_D_INFO;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN gUSBErrorLevel = EFI_D_ERROR;
//
// The UsbBusProtocol is just used to locate USB_BUS_CONTROLLER
// structure in the UsbBusDriverControllerDriverStop(). Then we can
// Close all opened protocols and release this structure.
//
STATIC EFI_GUID mUsbBusProtocolGuid = EFI_USB_BUS_PROTOCOL_GUID;
//
// EFI_DRIVER_BINDING_PROTOCOL Protocol Interface
//
EFI_STATUS
EFIAPI
UsbBusControllerDriverSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
EFI_STATUS
EFIAPI
UsbBusControllerDriverStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
EFI_STATUS
EFIAPI
UsbBusControllerDriverStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
);
EFI_DRIVER_BINDING_PROTOCOL gUsbBusDriverBinding = {
UsbBusControllerDriverSupported,
UsbBusControllerDriverStart,
UsbBusControllerDriverStop,
0x10,
NULL,
NULL
};
//
// Internal use only
//
STATIC
EFI_STATUS
ReportUsbStatusCode (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusController,
IN EFI_STATUS_CODE_TYPE Type,
IN EFI_STATUS_CODE_VALUE Code
);
//
// Supported function
//
VOID
InitializeUsbIoInstance (
IN USB_IO_CONTROLLER_DEVICE *UsbIoController
);
STATIC
USB_IO_CONTROLLER_DEVICE *
CreateUsbIoControllerDevice (
VOID
);
STATIC
EFI_STATUS
InitUsbIoController (
IN USB_IO_CONTROLLER_DEVICE *UsbIoController
);
//
// USB Device Configuration / Deconfiguration
//
STATIC
EFI_STATUS
UsbDeviceConfiguration (
IN USB_IO_CONTROLLER_DEVICE *ParentHubController,
IN EFI_HANDLE HostController,
IN UINT8 ParentPort,
IN USB_IO_DEVICE *UsbIoDevice
);
//
// Usb Bus enumeration function
//
STATIC
VOID
RootHubEnumeration (
IN EFI_EVENT Event,
IN VOID *Context
);
STATIC
VOID
HubEnumeration (
IN EFI_EVENT Event,
IN VOID *Context
);
STATIC
EFI_STATUS
UsbSetTransactionTranslator (
IN USB_IO_CONTROLLER_DEVICE *ParentHubController,
IN UINT8 ParentPort,
IN OUT USB_IO_DEVICE *Device
);
STATIC
EFI_STATUS
UsbUnsetTransactionTranslator (
USB_IO_DEVICE *Device
);
STATIC
EFI_STATUS
IdentifyDeviceSpeed (
USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
USB_IO_DEVICE *NewDevice,
UINT8 Index
);
STATIC
EFI_STATUS
ReleasePortToCHC (
USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
UINT8 PortNum
);
EFI_STATUS
ResetRootPort (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
IN UINT8 PortNum,
IN UINT8 RetryTimes
);
EFI_STATUS
ResetHubPort (
IN USB_IO_CONTROLLER_DEVICE *UsbIoController,
IN UINT8 PortIndex
);
STATIC
EFI_STATUS
ParentPortReset (
IN USB_IO_CONTROLLER_DEVICE *UsbIoController,
IN BOOLEAN ReConfigure,
IN UINT8 RetryTimes
);
//
// Following are address allocate and free functions
//
STATIC
UINT8
UsbAllocateAddress (
IN UINT8 *AddressPool
)
/*++
Routine Description:
Allocate address for usb device
Arguments:
AddressPool - Pool of usb device address
Returns:
Usb device address
--*/
{
UINT8 ByteIndex;
UINT8 BitIndex;
for (ByteIndex = 0; ByteIndex < 16; ByteIndex++) {
for (BitIndex = 0; BitIndex < 8; BitIndex++) {
if ((AddressPool[ByteIndex] & (1 << BitIndex)) == 0) {
//
// Found one, covert to address, and mark it use
//
AddressPool[ByteIndex] |= (1 << BitIndex);
return (UINT8) (ByteIndex * 8 + BitIndex);
}
}
}
return 0;
}
STATIC
VOID
UsbFreeAddress (
IN UINT8 DevAddress,
IN UINT8 *AddressPool
)
/*++
Routine Description:
Free address for usb device
Arguments:
DevAddress - Usb device address
AddressPool - Pool of usb device address
Returns:
VOID
--*/
{
UINT8 WhichByte;
UINT8 WhichBit;
//
// Locate the position
//
WhichByte = (UINT8) (DevAddress / 8);
WhichBit = (UINT8) (DevAddress & 0x7);
AddressPool[WhichByte] &= (~(1 << WhichBit));
}
EFI_STATUS
EFIAPI
UsbBusControllerDriverSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
/*++
Routine Description:
Test to see if this driver supports ControllerHandle. Any ControllerHandle
that has UsbHcProtocol installed will be supported.
Arguments:
This - Protocol instance pointer.
Controller - Handle of device to test
RemainingDevicePath - Device Path Protocol instance pointer
Returns:
EFI_SUCCESS - This driver supports this device.
EFI_UNSUPPORTED - This driver does not support this device.
--*/
{
EFI_STATUS Status;
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
EFI_USB2_HC_PROTOCOL *Usb2Hc;
EFI_USB_HC_PROTOCOL *UsbHc;
EFI_DEV_PATH_PTR Node;
//
// Check Device Path
//
if (RemainingDevicePath != NULL) {
Node.DevPath = RemainingDevicePath;
if (Node.DevPath->Type != MESSAGING_DEVICE_PATH ||
Node.DevPath->SubType != MSG_USB_DP ||
DevicePathNodeLength(Node.DevPath) != sizeof(USB_DEVICE_PATH)) {
return EFI_UNSUPPORTED;
}
}
//
// Open the IO Abstraction(s) needed to perform the supported test
//
Status = gBS->OpenProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **) &ParentDevicePath,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (Status == EFI_ALREADY_STARTED) {
return EFI_SUCCESS;
}
if (EFI_ERROR (Status)) {
return Status;
}
gBS->CloseProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
This->DriverBindingHandle,
Controller
);
//
// Check whether USB Host Controller Protocol is already
// installed on this handle. If it is installed, we can start
// USB Bus Driver now.
//
Status = gBS->OpenProtocol (
Controller,
&gEfiUsb2HcProtocolGuid,
(VOID **) &Usb2Hc,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (Status == EFI_ALREADY_STARTED) {
return EFI_SUCCESS;
}
if (EFI_ERROR (Status)) {
Status = gBS->OpenProtocol (
Controller,
&gEfiUsbHcProtocolGuid,
(VOID **) &UsbHc,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (Status == EFI_ALREADY_STARTED) {
return EFI_SUCCESS;
}
if (EFI_ERROR (Status)) {
return Status;
}
gBS->CloseProtocol (
Controller,
&gEfiUsbHcProtocolGuid,
This->DriverBindingHandle,
Controller
);
return EFI_SUCCESS;
}
gBS->CloseProtocol (
Controller,
&gEfiUsb2HcProtocolGuid,
This->DriverBindingHandle,
Controller
);
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
UsbBusControllerDriverStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
/*++
Routine Description:
Starting the Usb Bus Driver
Arguments:
This - Protocol instance pointer.
Controller - Handle of device to test
RemainingDevicePath - Not used
Returns:
EFI_SUCCESS - This driver supports this device.
EFI_DEVICE_ERROR - This driver cannot be started due to device
EFI_OUT_OF_RESOURCES- Can't allocate memory resources
--*/
{
EFI_STATUS Status;
EFI_STATUS OpenStatus;
USB_BUS_CONTROLLER_DEVICE *UsbBusDev;
USB_IO_DEVICE *RootHub;
USB_IO_CONTROLLER_DEVICE *RootHubController;
UINT8 MaxSpeed;
UINT8 PortNumber;
UINT8 Is64BitCapable;
//
// Allocate USB_BUS_CONTROLLER_DEVICE structure
//
UsbBusDev = NULL;
UsbBusDev = AllocateZeroPool (sizeof (USB_BUS_CONTROLLER_DEVICE));
if (UsbBusDev == NULL) {
return EFI_OUT_OF_RESOURCES;
}
UsbBusDev->Signature = USB_BUS_DEVICE_SIGNATURE;
UsbBusDev->AddressPool[0] = 1;
//
// Get the Device Path Protocol on Controller's handle
//
OpenStatus = gBS->OpenProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **) &UsbBusDev->DevicePath,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (OpenStatus)) {
gBS->FreePool (UsbBusDev);
return OpenStatus;
}
//
// Locate the Host Controller Interface
//
OpenStatus = gBS->OpenProtocol (
Controller,
&gEfiUsb2HcProtocolGuid,
(VOID **) &(UsbBusDev->Usb2HCInterface),
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (OpenStatus)) {
UsbBusDev->Hc2ProtocolSupported = FALSE;
OpenStatus = gBS->OpenProtocol (
Controller,
&gEfiUsbHcProtocolGuid,
(VOID **) &(UsbBusDev->UsbHCInterface),
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (OpenStatus)) {
//
// Report Status Code here since we will reset the host controller
//
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
EFI_ERROR_CODE | EFI_ERROR_MINOR,
EFI_IO_BUS_USB | EFI_IOB_EC_CONTROLLER_ERROR,
UsbBusDev->DevicePath
);
gBS->CloseProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
This->DriverBindingHandle,
Controller
);
gBS->FreePool (UsbBusDev);
return OpenStatus;
}
DEBUG ((gUSBDebugLevel, "UsbHcProtocol Opened.\n"));
} else {
DEBUG ((gUSBDebugLevel, "Usb2HcProtocol Opened.\n"));
UsbBusDev->Hc2ProtocolSupported = TRUE;
}
//
// Attach EFI_USB_BUS_PROTOCOL to controller handle,
// for locate UsbBusDev later
//
Status = gBS->InstallProtocolInterface (
&Controller,
&mUsbBusProtocolGuid,
EFI_NATIVE_INTERFACE,
&UsbBusDev->BusIdentify
);
if (EFI_ERROR (Status)) {
gBS->CloseProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
This->DriverBindingHandle,
Controller
);
if (UsbBusDev->Hc2ProtocolSupported) {
gBS->CloseProtocol (
Controller,
&gEfiUsb2HcProtocolGuid,
This->DriverBindingHandle,
Controller
);
} else {
gBS->CloseProtocol (
Controller,
&gEfiUsbHcProtocolGuid,
This->DriverBindingHandle,
Controller
);
}
gBS->FreePool (UsbBusDev);
return Status;
}
//
// Add root hub to the tree
//
RootHub = NULL;
RootHub = AllocateZeroPool (sizeof (USB_IO_DEVICE));
if (RootHub == NULL) {
gBS->UninstallProtocolInterface (
Controller,
&mUsbBusProtocolGuid,
&UsbBusDev->BusIdentify
);
gBS->CloseProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
This->DriverBindingHandle,
Controller
);
if (UsbBusDev->Hc2ProtocolSupported) {
gBS->CloseProtocol (
Controller,
&gEfiUsb2HcProtocolGuid,
This->DriverBindingHandle,
Controller
);
} else {
gBS->CloseProtocol (
Controller,
&gEfiUsbHcProtocolGuid,
This->DriverBindingHandle,
Controller
);
}
gBS->FreePool (UsbBusDev);
return EFI_OUT_OF_RESOURCES;
}
RootHub->BusController = UsbBusDev;
RootHub->DeviceAddress = UsbAllocateAddress (UsbBusDev->AddressPool);
UsbBusDev->Root = RootHub;
//
// Allocate Root Hub Controller
//
RootHubController = CreateUsbIoControllerDevice ();
if (RootHubController == NULL) {
gBS->UninstallProtocolInterface (
Controller,
&mUsbBusProtocolGuid,
&UsbBusDev->BusIdentify
);
gBS->CloseProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
This->DriverBindingHandle,
Controller
);
if (UsbBusDev->Hc2ProtocolSupported) {
gBS->CloseProtocol (
Controller,
&gEfiUsb2HcProtocolGuid,
This->DriverBindingHandle,
Controller
);
} else {
gBS->CloseProtocol (
Controller,
&gEfiUsbHcProtocolGuid,
This->DriverBindingHandle,
Controller
);
}
gBS->FreePool (UsbBusDev);
gBS->FreePool (RootHub);
return EFI_OUT_OF_RESOURCES;
}
UsbVirtualHcGetCapability (
UsbBusDev,
&MaxSpeed,
&PortNumber,
&Is64BitCapable
);
RootHubController->DownstreamPorts = PortNumber;
RootHubController->UsbDevice = RootHub;
RootHubController->IsUsbHub = TRUE;
RootHubController->DevicePath = UsbBusDev->DevicePath;
RootHubController->HostController = Controller;
RootHub->NumOfControllers = 1;
RootHub->UsbController[0] = RootHubController;
RootHub->DeviceSpeed = MaxSpeed;
//
// Report Status Code here since we will reset the host controller
//
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
EFI_PROGRESS_CODE,
EFI_IO_BUS_USB | EFI_IOB_PC_RESET,
UsbBusDev->DevicePath
);
//
// Reset USB Host Controller
//
UsbVirtualHcReset (
UsbBusDev,
EFI_USB_HC_RESET_GLOBAL
);
//
// Report Status Code while we are going to bring up the Host Controller
// and start bus enumeration
//
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
EFI_PROGRESS_CODE,
EFI_IO_BUS_USB | EFI_IOB_PC_ENABLE,
UsbBusDev->DevicePath
);
//
// Start USB Host Controller
//
UsbVirtualHcSetState (
UsbBusDev,
EfiUsbHcStateOperational
);
//
// Create a timer to query root ports periodically
//
Status = gBS->CreateEvent (
EFI_EVENT_TIMER | EFI_EVENT_NOTIFY_SIGNAL,
EFI_TPL_CALLBACK,
RootHubEnumeration,
RootHubController,
&RootHubController->HubNotify
);
if (EFI_ERROR (Status)) {
gBS->UninstallProtocolInterface (
Controller,
&mUsbBusProtocolGuid,
&UsbBusDev->BusIdentify
);
gBS->CloseProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
This->DriverBindingHandle,
Controller
);
if (UsbBusDev->Hc2ProtocolSupported) {
gBS->CloseProtocol (
Controller,
&gEfiUsb2HcProtocolGuid,
This->DriverBindingHandle,
Controller
);
} else {
gBS->CloseProtocol (
Controller,
&gEfiUsbHcProtocolGuid,
This->DriverBindingHandle,
Controller
);
}
gBS->FreePool (RootHubController);
gBS->FreePool (RootHub);
gBS->FreePool (UsbBusDev);
return EFI_OUT_OF_RESOURCES;
}
//
// Before depending on the timer to check root ports periodically,
// here we should check them immediately for the first time, or
// there will be an interval between bus start and devices start.
//
gBS->SignalEvent (RootHubController->HubNotify);
Status = gBS->SetTimer (
RootHubController->HubNotify,
TimerPeriodic,
BUSPOLLING_PERIOD
);
if (EFI_ERROR (Status)) {
gBS->UninstallProtocolInterface (
Controller,
&mUsbBusProtocolGuid,
&UsbBusDev->BusIdentify
);
gBS->CloseProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
This->DriverBindingHandle,
Controller
);
if (UsbBusDev->Hc2ProtocolSupported) {
gBS->CloseProtocol (
Controller,
&gEfiUsb2HcProtocolGuid,
This->DriverBindingHandle,
Controller
);
} else {
gBS->CloseProtocol (
Controller,
&gEfiUsbHcProtocolGuid,
This->DriverBindingHandle,
Controller
);
}
gBS->CloseEvent (RootHubController->HubNotify);
gBS->FreePool (RootHubController);
gBS->FreePool (RootHub);
gBS->FreePool (UsbBusDev);
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
//
// Stop the bus controller
//
EFI_STATUS
EFIAPI
UsbBusControllerDriverStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
/*++
Routine Description:
Stop this driver on ControllerHandle. Support stoping any child handles
created by this driver.
Arguments:
This - Protocol instance pointer.
Controller - Handle of device to stop driver on
NumberOfChildren - Number of Children in the ChildHandleBuffer
ChildHandleBuffer - List of handles for the children we need to stop.
Returns:
EFI_SUCCESS
EFI_DEVICE_ERROR
others
--*/
{
EFI_STATUS Status;
USB_IO_DEVICE *Root;
USB_IO_CONTROLLER_DEVICE *RootHubController;
USB_BUS_CONTROLLER_DEVICE *UsbBusController;
EFI_USB_BUS_PROTOCOL *UsbIdentifier;
UINT8 Index2;
USB_IO_CONTROLLER_DEVICE *UsbController;
USB_IO_DEVICE *UsbIoDevice;
USB_IO_CONTROLLER_DEVICE *HubController;
UINTN Index;
EFI_USB_IO_PROTOCOL *UsbIo;
if (NumberOfChildren > 0) {
for (Index = 0; Index < NumberOfChildren; Index++) {
Status = gBS->OpenProtocol (
ChildHandleBuffer[Index],
&gEfiUsbIoProtocolGuid,
(VOID **) &UsbIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
//
// We are here since the handle passed in does not support
// UsbIo protocol. There are several reasons that will cause
// this.
// For combo device such as keyboard, it may have 2 devices
// in one, namely, keyboard and mouse. If we deconfigure one
// of them, the other will be freed at the same time. This will
// cause the status error. But this is the correct behavior.
// For hub device, if we deconfigure hub first, the other chile
// device will be disconnected also, this will also provide us
// a status error. Now we will only report EFI_SUCCESS since Uhc
// driver will be disconnected at the second time.(pls see
// CoreDisconnectController for details)
//
continue;
}
UsbController = USB_IO_CONTROLLER_DEVICE_FROM_USB_IO_THIS (UsbIo);
UsbIoDevice = UsbController->UsbDevice;
HubController = UsbController->Parent;
UsbDeviceDeConfiguration (UsbIoDevice);
for (Index2 = 0; Index2 < HubController->DownstreamPorts; Index2++) {
if (HubController->Children[Index2] == UsbIoDevice) {
HubController->Children[Index2] = NULL;
}
}
}
return EFI_SUCCESS;
}
//
// Get the USB_BUS_CONTROLLER_DEVICE
//
Status = gBS->OpenProtocol (
Controller,
&mUsbBusProtocolGuid,
(VOID **) &UsbIdentifier,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
UsbBusController = USB_BUS_CONTROLLER_DEVICE_FROM_THIS (UsbIdentifier);
//
// Stop USB Host Controller
//
//
// Report Status Code here since we will reset the host controller
//
ReportUsbStatusCode (
UsbBusController,
EFI_PROGRESS_CODE,
EFI_IO_BUS_USB | EFI_IOB_PC_RESET
);
UsbVirtualHcSetState (
UsbBusController,
EfiUsbHcStateHalt
);
//
// Deconfiguration all its devices
//
Root = UsbBusController->Root;
RootHubController = Root->UsbController[0];
gBS->CloseEvent (RootHubController->HubNotify);
for (Index2 = 0; Index2 < RootHubController->DownstreamPorts; Index2++) {
if (RootHubController->Children[Index2]) {
UsbDeviceDeConfiguration (RootHubController->Children[Index2]);
RootHubController->Children[Index2] = NULL;
}
}
gBS->FreePool (RootHubController);
gBS->FreePool (Root);
//
// Uninstall USB Bus Protocol
//
gBS->UninstallProtocolInterface (
Controller,
&mUsbBusProtocolGuid,
&UsbBusController->BusIdentify
);
//
// Close USB_HC_PROTOCOL & DEVICE_PATH_PROTOCOL
// Opened by this Controller
//
if (UsbBusController->Hc2ProtocolSupported) {
gBS->CloseProtocol (
Controller,
&gEfiUsb2HcProtocolGuid,
This->DriverBindingHandle,
Controller
);
} else {
gBS->CloseProtocol (
Controller,
&gEfiUsbHcProtocolGuid,
This->DriverBindingHandle,
Controller
);
}
gBS->CloseProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
This->DriverBindingHandle,
Controller
);
gBS->FreePool (UsbBusController);
return EFI_SUCCESS;
}
//
// USB Device Configuration
//
STATIC
EFI_STATUS
UsbDeviceConfiguration (
IN USB_IO_CONTROLLER_DEVICE *ParentHubController,
IN EFI_HANDLE HostController,
IN UINT8 ParentPort,
IN USB_IO_DEVICE *UsbIoDevice
)
/*++
Routine Description:
Configurate a new device attached to the usb bus
Arguments:
ParentHubController - Parent Hub which this device is connected.
HostController - Host Controller handle
ParentPort - Parent Hub port which this device is connected.
UsbIoDevice - The device to be configured.
Returns:
EFI_SUCCESS
EFI_DEVICE_ERROR
EFI_OUT_OF_RESOURCES
--*/
{
UINT8 DevAddress;
UINT8 Index;
EFI_STATUS Result;
UINT32 Status;
CHAR16 *StrManufacturer;
CHAR16 *StrProduct;
CHAR16 *StrSerialNumber;
EFI_USB_IO_PROTOCOL *UsbIo;
UINT8 NumOfInterface;
USB_IO_CONTROLLER_DEVICE *FirstController;
USB_BUS_CONTROLLER_DEVICE *UsbBusDev;
USB_IO_CONTROLLER_DEVICE *UsbIoController;
UsbBusDev = UsbIoDevice->BusController;
UsbSetTransactionTranslator (
ParentHubController,
ParentPort,
UsbIoDevice
);
//
// Since a USB device must have at least on interface,
// so create this instance first
//
FirstController = CreateUsbIoControllerDevice ();
FirstController->UsbDevice = UsbIoDevice;
UsbIoDevice->UsbController[0] = FirstController;
FirstController->InterfaceNumber = 0;
FirstController->ParentPort = ParentPort;
FirstController->Parent = ParentHubController;
FirstController->HostController = HostController;
InitializeUsbIoInstance (FirstController);
DEBUG ((gUSBDebugLevel, "Configuration Usb Device at 0x%x...\n", ParentPort));
//
// Ensure we used the correctly USB I/O instance
//
UsbIo = &FirstController->UsbIo;
if (UsbIoDevice->DeviceSpeed != EFI_USB_SPEED_HIGH) {
ParentPortReset (FirstController, FALSE, 0);
}
//
// First retrieve the 1st 8 bytes of
// in order to get the MaxPacketSize for Endpoint 0
//
for (Index = 0; Index < 3; Index++) {
UsbIoDevice->DeviceDescriptor.MaxPacketSize0 = 8;
gBS->Stall (100 * 1000);
Result = UsbGetDescriptor (
UsbIo,
(USB_DT_DEVICE << 8),
0,
8,
&UsbIoDevice->DeviceDescriptor,
&Status
);
if (!EFI_ERROR (Result)) {
DEBUG (
(gUSBDebugLevel,
"Get Device Descriptor Success, MaxPacketSize0 = 0x%x\n",
UsbIoDevice->DeviceDescriptor.MaxPacketSize0)
);
break;
}
}
if (Index == 3) {
ReportUsbStatusCode (
UsbBusDev,
EFI_ERROR_CODE | EFI_ERROR_MINOR,
EFI_IO_BUS_USB | EFI_IOB_EC_READ_ERROR
);
DEBUG ((gUSBErrorLevel, "Get Device Descriptor Fail when configing\n"));
gBS->FreePool (FirstController);
return EFI_DEVICE_ERROR;
}
DevAddress = UsbAllocateAddress (UsbIoDevice->BusController->AddressPool);
if (DevAddress == 0) {
DEBUG ((gUSBErrorLevel, "Cannot allocate address\n"));
gBS->FreePool (FirstController);
return EFI_OUT_OF_RESOURCES;
}
Result = UsbSetDeviceAddress (UsbIo, DevAddress, &Status);
if (EFI_ERROR (Result)) {
DEBUG ((gUSBErrorLevel, "Set address error\n"));
ReportUsbStatusCode (
UsbBusDev,
EFI_ERROR_CODE | EFI_ERROR_MINOR,
EFI_IO_BUS_USB | EFI_IOB_EC_WRITE_ERROR
);
UsbFreeAddress (
DevAddress,
UsbIoDevice->BusController->AddressPool
);
gBS->FreePool (FirstController);
return EFI_DEVICE_ERROR;
}
UsbIoDevice->DeviceAddress = DevAddress;
//
// SetAddress Complete Time by Spec, Max 50ms
//
gBS->Stall (10 * 1000);
//
// Get the whole device descriptor
//
Result = UsbGetDescriptor (
UsbIo,
(USB_DT_DEVICE << 8),
0,
sizeof (EFI_USB_DEVICE_DESCRIPTOR),
&UsbIoDevice->DeviceDescriptor,
&Status
);
if (EFI_ERROR (Result)) {
DEBUG ((gUSBErrorLevel, "Get whole Device Descriptor error\n"));
ReportUsbStatusCode (
UsbBusDev,
EFI_ERROR_CODE | EFI_ERROR_MINOR,
EFI_IO_BUS_USB | EFI_IOB_EC_READ_ERROR
);
UsbFreeAddress (
DevAddress,
UsbIoDevice->BusController->AddressPool
);
gBS->FreePool (FirstController);
return EFI_DEVICE_ERROR;
}
//
// Get & parse all configurations for this device, including
// all configuration descriptors, all interface descriptors, all
// endpoint descriptors
//
Result = UsbGetAllConfigurations (UsbIoDevice);
if (EFI_ERROR (Result)) {
DEBUG ((gUSBErrorLevel, "Failed to get device configuration\n"));
ReportUsbStatusCode (
UsbBusDev,
EFI_ERROR_CODE | EFI_ERROR_MINOR,
EFI_IO_BUS_USB | EFI_IOB_EC_READ_ERROR
);
UsbFreeAddress (
DevAddress,
UsbIoDevice->BusController->AddressPool
);
gBS->FreePool (FirstController);
return EFI_DEVICE_ERROR;
}
//
// Set the 1st configuration value
//
Result = UsbSetDefaultConfiguration (UsbIoDevice);
if (EFI_ERROR (Result)) {
DEBUG ((gUSBErrorLevel, "Failed to set device configuration\n"));
ReportUsbStatusCode (
UsbBusDev,
EFI_ERROR_CODE | EFI_ERROR_MINOR,
EFI_IO_BUS_USB | EFI_IOB_EC_WRITE_ERROR
);
UsbFreeAddress (
DevAddress,
UsbIoDevice->BusController->AddressPool
);
gBS->FreePool (FirstController);
return EFI_DEVICE_ERROR;
}
UsbIoDevice->IsConfigured = TRUE;
//
// Get all string table if applicable
//
Result = UsbGetStringtable (UsbIoDevice);
if (EFI_ERROR (Result)) {
DEBUG ((gUSBDebugLevel, "Device doesn't support string table\n"));
} else {
StrManufacturer = NULL;
UsbIo->UsbGetStringDescriptor (
UsbIo,
UsbIoDevice->LangID[0],
(UsbIoDevice->DeviceDescriptor).StrManufacturer,
&StrManufacturer
);
StrProduct = NULL;
UsbIo->UsbGetStringDescriptor (
UsbIo,
UsbIoDevice->LangID[0],
(UsbIoDevice->DeviceDescriptor).StrProduct,
&StrProduct
);
StrSerialNumber = NULL;
UsbIo->UsbGetStringDescriptor (
UsbIo,
UsbIoDevice->LangID[0],
(UsbIoDevice->DeviceDescriptor).StrSerialNumber,
&StrSerialNumber
);
if (StrManufacturer) {
gBS->FreePool (StrManufacturer);
}
if (StrProduct) {
gBS->FreePool (StrProduct);
}
if (StrSerialNumber) {
gBS->FreePool (StrSerialNumber);
}
}
//
// Create USB_IO_CONTROLLER_DEVICE for
// each detected interface
//
FirstController->CurrentConfigValue =
UsbIoDevice->ActiveConfig->CongfigDescriptor.ConfigurationValue;
NumOfInterface =
UsbIoDevice->ActiveConfig->CongfigDescriptor.NumInterfaces;
UsbIoDevice->NumOfControllers = NumOfInterface;
Result = InitUsbIoController (FirstController);
if (EFI_ERROR (Result)) {
ReportUsbStatusCode (
UsbBusDev,
EFI_ERROR_CODE | EFI_ERROR_MINOR,
EFI_IO_BUS_USB | EFI_IOB_EC_INTERFACE_ERROR
);
gBS->FreePool (FirstController);
UsbIoDevice->UsbController[0] = NULL;
return EFI_DEVICE_ERROR;
}
for (Index = 1; Index < NumOfInterface; Index++) {
UsbIoController = CreateUsbIoControllerDevice ();
UsbIoController->UsbDevice = UsbIoDevice;
UsbIoController->CurrentConfigValue =
UsbIoDevice->ActiveConfig->CongfigDescriptor.ConfigurationValue;
UsbIoController->InterfaceNumber = Index;
UsbIoDevice->UsbController[Index] = UsbIoController;
UsbIoController->ParentPort = ParentPort;
UsbIoController->Parent = ParentHubController;
UsbIoController->HostController = HostController;
//
// First copy the USB_IO Protocol instance
//
CopyMem (
&UsbIoController->UsbIo,
UsbIo,
sizeof (EFI_USB_IO_PROTOCOL)
);
Result = InitUsbIoController (UsbIoController);
if (EFI_ERROR (Result)) {
ReportUsbStatusCode (
UsbBusDev,
EFI_ERROR_CODE | EFI_ERROR_MINOR,
EFI_IO_BUS_USB | EFI_IOB_EC_INTERFACE_ERROR
);
gBS->FreePool (UsbIoController);
UsbIoDevice->UsbController[Index] = NULL;
}
}
return EFI_SUCCESS;
}
//
// USB Device DeConfiguration
//
EFI_STATUS
UsbDeviceDeConfiguration (
IN USB_IO_DEVICE *UsbIoDevice
)
/*++
Routine Description:
Remove Device, Device Handles, Uninstall Protocols.
Arguments:
UsbIoDevice - The device to be deconfigured.
Returns:
EFI_SUCCESS
EFI_DEVICE_ERROR
--*/
{
USB_IO_CONTROLLER_DEVICE *UsbController;
UINT8 index;
USB_IO_DEVICE *ChildDevice;
UINT8 Index;
EFI_USB_IO_PROTOCOL *UsbIo;
//
// Double check UsbIoDevice exists
//
if (UsbIoDevice == NULL) {
return EFI_SUCCESS;
}
UsbUnsetTransactionTranslator (UsbIoDevice);
for (index = 0; index < UsbIoDevice->NumOfControllers; index++) {
//
// Check if it is a hub, if so, de configuration all its
// downstream ports
//
UsbController = UsbIoDevice->UsbController[index];
//
// Check the controller pointer
//
if (UsbController == NULL) {
continue;
}
if (UsbController->IsUsbHub) {
DEBUG ((gUSBDebugLevel, "Hub Deconfig, First Deconfig its downstream ports\n"));
//
// First Remove interrupt transfer request for the status
// change port
//
UsbIo = &UsbController->UsbIo;
UsbIo->UsbAsyncInterruptTransfer (
UsbIo,
UsbController->HubEndpointAddress,
FALSE,
0,
0,
NULL,
NULL
);
if (NULL != UsbController->HubNotify) {
gBS->CloseEvent (UsbController->HubNotify);
}
for (Index = 0; Index < UsbController->DownstreamPorts; Index++) {
if (UsbController->Children[Index]) {
ChildDevice = UsbController->Children[Index];
UsbDeviceDeConfiguration (ChildDevice);
UsbController->Children[Index] = NULL;
}
}
}
//
// If the controller is managed by a device driver, we need to
// disconnect them
//
if (UsbController->IsManagedByDriver) {
gBS->DisconnectController (
UsbController->Handle,
NULL,
NULL
);
}
//
// remove child handle reference to the USB_HC_PROTOCOL
//
if (UsbIoDevice->BusController->Hc2ProtocolSupported) {
gBS->CloseProtocol (
UsbController->HostController,
&gEfiUsb2HcProtocolGuid,
gUsbBusDriverBinding.DriverBindingHandle,
UsbController->Handle
);
} else {
gBS->CloseProtocol (
UsbController->HostController,
&gEfiUsbHcProtocolGuid,
gUsbBusDriverBinding.DriverBindingHandle,
UsbController->Handle
);
}
//
// Uninstall EFI_USB_IO_PROTOCOL & DEVICE_PATH_PROTOCOL
// installed on this handle
//
gBS->UninstallMultipleProtocolInterfaces (
UsbController->Handle,
&gEfiDevicePathProtocolGuid,
UsbController->DevicePath,
&gEfiUsbIoProtocolGuid,
&UsbController->UsbIo,
NULL
);
if (UsbController->DevicePath != NULL) {
gBS->FreePool (UsbController->DevicePath);
}
gBS->FreePool (UsbController);
UsbIoDevice->UsbController[index] = NULL;
}
//
// Free address for later use
//
UsbFreeAddress (
UsbIoDevice->DeviceAddress,
UsbIoDevice->BusController->AddressPool
);
//
// Free all resouces allocated for all its configurations
//
UsbDestroyAllConfiguration (UsbIoDevice);
if (UsbIoDevice) {
gBS->FreePool (UsbIoDevice);
UsbIoDevice = NULL;
}
return EFI_SUCCESS;
}
//
// After interrupt complete, this function will be called,
// This function need to be well-defined later
//
STATIC
EFI_STATUS
EFIAPI
OnHubInterruptComplete (
IN VOID *Data,
IN UINTN DataLength,
IN VOID *Context,
IN UINT32 Result
)
/*++
Routine Description:
Whenever hub interrupt occurs, this routine will be called to check
which event happens.
Arguments:
Data - Hub interrupt transfer data.
DataLength - The length of the Data.
Context - Hub Controller Device.
Result - Hub interrupt transfer status.
Returns:
EFI_SUCCESS
EFI_DEVICE_ERROR
--*/
{
USB_IO_CONTROLLER_DEVICE *HubController;
UINT8 Index;
UINT8 *ptr;
EFI_USB_IO_PROTOCOL *UsbIo;
UINT32 UsbResult;
BOOLEAN Disconnected;
EFI_STATUS Status;
HubController = (USB_IO_CONTROLLER_DEVICE *) Context;
UsbIo = &HubController->UsbIo;
//
// If something error in this interrupt transfer,
//
if (Result != EFI_USB_NOERROR) {
if ((Result & EFI_USB_ERR_STALL) == EFI_USB_ERR_STALL) {
UsbClearEndpointHalt (
UsbIo,
HubController->HubEndpointAddress,
&UsbResult
);
}
//
// Delete & Submit this interrupt again
//
UsbIo->UsbAsyncInterruptTransfer (
UsbIo,
HubController->HubEndpointAddress,
FALSE,
0,
0,
NULL,
NULL
);
//
// try to detect if the hub itself was disconnected or not
//
Status = IsDeviceDisconnected (
HubController,
&Disconnected
);
if (!EFI_ERROR (Status) && Disconnected == TRUE) {
DEBUG ((gUSBErrorLevel, "Hub is disconnected\n"));
return EFI_DEVICE_ERROR;
}
//
// Hub ports < 7
//
UsbIo->UsbAsyncInterruptTransfer (
UsbIo,
HubController->HubEndpointAddress,
TRUE,
100,
1,
OnHubInterruptComplete,
HubController
);
return EFI_DEVICE_ERROR;
}
if (DataLength == 0 || Data == NULL) {
return EFI_SUCCESS;
}
//
// Scan which port has status change
// Bit 0 stands for hub itself, other bit stands for
// the corresponding port
//
for (Index = 0; Index < DataLength * 8; Index++) {
ptr = (UINT8 *) Data + Index / 8;
if ((*ptr) & (1 << (Index & 0x7))) {
HubController->StatusChangePort = Index;
break;
}
}
//
// Signal hub notify event
//
gBS->SignalEvent (HubController->HubNotify);
return EFI_SUCCESS;
}
//
// USB Root Hub Enumerator
//
STATIC
VOID
EFIAPI
RootHubEnumeration (
IN EFI_EVENT Event,
IN VOID *Context
)
/*++
Routine Description:
This is USB RootHub enumerator
Arguments:
Event - Indicating which event is signaled
Context - actually it is a USB_IO_DEVICE
Returns:
VOID
--*/
{
USB_IO_CONTROLLER_DEVICE *HubController;
EFI_USB_PORT_STATUS HubPortStatus;
EFI_STATUS Status;
UINT8 Index;
USB_IO_DEVICE *UsbIoDev;
USB_BUS_CONTROLLER_DEVICE *UsbBusDev;
EFI_HANDLE HostController;
USB_IO_DEVICE *OldUsbIoDevice;
USB_IO_DEVICE *NewDevice;
USB_IO_CONTROLLER_DEVICE *NewController;
UINT8 Index2;
EFI_USB_IO_PROTOCOL *UsbIo;
HubController = (USB_IO_CONTROLLER_DEVICE *) Context;
HostController = HubController->HostController;
UsbBusDev = HubController->UsbDevice->BusController;
//
// Root hub has the address 1
//
UsbIoDev = HubController->UsbDevice;
for (Index = 0; Index < HubController->DownstreamPorts; Index++) {
UsbVirtualHcGetRootHubPortStatus (
UsbBusDev,
Index,
(EFI_USB_PORT_STATUS *) &HubPortStatus
);
if (!IsPortConnectChange (HubPortStatus.PortChangeStatus)) {
continue;
}
//
// Clear root hub status change status
//
UsbVirtualHcClearRootHubPortFeature (
UsbBusDev,
Index,
EfiUsbPortConnectChange
);
gBS->Stall (100 * 1000);
UsbVirtualHcGetRootHubPortStatus (
UsbBusDev,
Index,
(EFI_USB_PORT_STATUS *) &HubPortStatus
);
if (IsPortConnect (HubPortStatus.PortStatus)) {
//
// There is something connected to this port
//
DEBUG ((gUSBDebugLevel, "Something connected to Root Hub at Port0x%x\n", Index));
ReportUsbStatusCode (
UsbBusDev,
EFI_PROGRESS_CODE,
EFI_IO_BUS_USB | EFI_IOB_PC_HOTPLUG
);
//
// if there is something physically detached, but still logically
// attached...
//
OldUsbIoDevice = HubController->Children[Index];
if (NULL != OldUsbIoDevice) {
UsbDeviceDeConfiguration (OldUsbIoDevice);
HubController->Children[Index] = NULL;
}
NewDevice = AllocateZeroPool (sizeof (USB_IO_DEVICE));
if (NewDevice == NULL) {
return ;
}
//
// Initialize some fields by copying data from
// its parents
//
NewDevice->DeviceDescriptor.MaxPacketSize0 = 8;
NewDevice->BusController = UsbIoDev->BusController;
//
// Process of identify device speed
//
Status = IdentifyDeviceSpeed (
UsbBusDev,
NewDevice,
Index
);
if (EFI_ERROR (Status)) {
gBS->FreePool (NewDevice);
continue;
}
//
// Configure that device
//
Status = UsbDeviceConfiguration (
HubController,
HostController,
Index,
NewDevice
);
if (EFI_ERROR (Status)) {
gBS->FreePool (NewDevice);
return ;
}
//
// Add this device to the usb bus tree
//
HubController->Children[Index] = NewDevice;
for (Index2 = 0; Index2 < NewDevice->NumOfControllers; Index2++) {
//
// If this device is hub, add to the hub index
//
NewController = NewDevice->UsbController[Index2];
Status = gBS->ConnectController (
NewController->Handle,
NULL,
NULL,
TRUE
);
//
// If connect success, we need to disconnect when
// stop the controller, otherwise we need not call
// gBS->DisconnectController ()
// This is used by those usb devices we don't plan
// to support. We can allocate
// controller handles for them, but we don't have
// device drivers to manage them.
//
NewController->IsManagedByDriver = (BOOLEAN) (!EFI_ERROR (Status));
if (IsHub (NewController)) {
NewController->IsUsbHub = TRUE;
//
// Configure Hub Controller
//
Status = DoHubConfig (NewController);
if (EFI_ERROR (Status)) {
continue;
}
//
// Create an event to do hub enumeration
//
gBS->CreateEvent (
EFI_EVENT_NOTIFY_SIGNAL,
EFI_TPL_CALLBACK,
HubEnumeration,
NewController,
&NewController->HubNotify
);
//
// Add request to do query hub status
// change endpoint
// Hub ports < 7
//
UsbIo = &NewController->UsbIo;
UsbIo->UsbAsyncInterruptTransfer (
UsbIo,
NewController->HubEndpointAddress,
TRUE,
100,
1,
OnHubInterruptComplete,
NewController
);
}
}
} else {
//
// Something disconnected from USB root hub
//
DEBUG ((gUSBDebugLevel, "Something disconnected from Root Hub at Port0x%x\n", Index));
OldUsbIoDevice = HubController->Children[Index];
UsbDeviceDeConfiguration (OldUsbIoDevice);
HubController->Children[Index] = NULL;
UsbVirtualHcClearRootHubPortFeature (
UsbBusDev,
Index,
EfiUsbPortEnableChange
);
}
}
return ;
}
//
// USB Root Hub Enumerator
//
STATIC
VOID
EFIAPI
HubEnumeration (
IN EFI_EVENT Event,
IN VOID *Context
)
/*++
Routine Description:
This is Usb Hub enumerator
Arguments:
Event - Indicating which event is signaled
Context - actually it is a USB_IO_DEVICE
Returns:
VOID
--*/
{
USB_IO_CONTROLLER_DEVICE *HubController;
EFI_USB_PORT_STATUS HubPortStatus;
EFI_STATUS Status;
USB_BUS_CONTROLLER_DEVICE *UsbBusDev;
EFI_HANDLE HostController;
USB_IO_DEVICE *OldUsbIoDevice;
USB_IO_DEVICE *NewDevice;
USB_IO_CONTROLLER_DEVICE *NewController;
UINT8 Index2;
EFI_USB_IO_PROTOCOL *UsbIo;
UINT8 StatusChangePort;
UINT8 Number;
HubController = (USB_IO_CONTROLLER_DEVICE *) Context;
HostController = HubController->HostController;
UsbBusDev = HubController->UsbDevice->BusController;
//
// Event from Hub, Get the hub controller handle
//
//
// Get the status change endpoint
//
StatusChangePort = HubController->StatusChangePort;
//
// Clear HubController Status Change Bit
//
HubController->StatusChangePort = 0;
if (StatusChangePort == 0) {
//
// Hub changes, we don't handle here
//
return ;
}
//
// Check which event took place at that port
//
UsbIo = &HubController->UsbIo;
Status = HubGetPortStatus (
UsbIo,
StatusChangePort,
(UINT32 *) &HubPortStatus
);
if (EFI_ERROR (Status)) {
return ;
}
//
// Clear some change status
//
if (HubPortStatus.PortChangeStatus & USB_PORT_STAT_C_ENABLE) {
//
// Clear Hub port enable change
//
DEBUG ((gUSBDebugLevel, "Port Enable Change\n"));
HubClearPortFeature (
UsbIo,
StatusChangePort,
EfiUsbPortEnableChange
);
HubGetPortStatus (
UsbIo,
StatusChangePort,
(UINT32 *) &HubPortStatus
);
}
if (HubPortStatus.PortChangeStatus & USB_PORT_STAT_C_RESET) {
//
// Clear Hub reset change
//
DEBUG ((gUSBDebugLevel, "Port Reset Change\n"));
HubClearPortFeature (
UsbIo,
StatusChangePort,
EfiUsbPortResetChange
);
HubGetPortStatus (
UsbIo,
StatusChangePort,
(UINT32 *) &HubPortStatus
);
}
if (HubPortStatus.PortChangeStatus & USB_PORT_STAT_C_OVERCURRENT) {
//
// Clear Hub overcurrent change
//
DEBUG ((gUSBDebugLevel, "Port Overcurrent Change\n"));
HubClearPortFeature (
UsbIo,
StatusChangePort,
EfiUsbPortOverCurrentChange
);
HubGetPortStatus (
UsbIo,
StatusChangePort,
(UINT32 *) &HubPortStatus
);
}
if (IsPortConnectChange (HubPortStatus.PortChangeStatus)) {
//
// First clear port connection change
//
DEBUG ((gUSBDebugLevel, "Port Connection Change\n"));
HubClearPortFeature (
UsbIo,
StatusChangePort,
EfiUsbPortConnectChange
);
HubGetPortStatus (
UsbIo,
StatusChangePort,
(UINT32 *) &HubPortStatus
);
if (IsPortConnect (HubPortStatus.PortStatus)) {
DEBUG ((gUSBDebugLevel, "New Device Connect on Hub port \n"));
ReportUsbStatusCode (
UsbBusDev,
EFI_PROGRESS_CODE,
EFI_IO_BUS_USB | EFI_IOB_PC_HOTPLUG
);
//
// if there is something physically detached, but still logically
// attached...
//
OldUsbIoDevice = HubController->Children[StatusChangePort - 1];
if (NULL != OldUsbIoDevice) {
UsbDeviceDeConfiguration (OldUsbIoDevice);
HubController->Children[StatusChangePort - 1] = NULL;
}
NewDevice = AllocateZeroPool (sizeof (USB_IO_DEVICE));
if (NewDevice == NULL) {
return ;
}
//
// Initialize some fields
//
NewDevice->DeviceDescriptor.MaxPacketSize0 = 8;
NewDevice->BusController = HubController->UsbDevice->BusController;
//
// There is something connected to this port,
// reset that port
//
// Disable the enable bit in port status
//
HubClearPortFeature (
UsbIo,
StatusChangePort,
EfiUsbPortEnable
);
gBS->Stall (50 * 1000);
//
// Wait for bit change
//
Number = 10;
do {
HubGetPortStatus (
UsbIo,
StatusChangePort,
(UINT32 *) &HubPortStatus
);
gBS->Stall (10 * 1000);
Number -= 1;
} while ((HubPortStatus.PortStatus & USB_PORT_STAT_ENABLE) == 1 && Number > 0);
if (Number == 0) {
//
// Cannot disable port, return error
//
DEBUG ((gUSBErrorLevel, "Disable Port Failed\n"));
gBS->FreePool (NewDevice);
return ;
}
HubSetPortFeature (
UsbIo,
StatusChangePort,
EfiUsbPortReset
);
gBS->Stall (50 * 1000);
//
// Wait for port reset complete
//
Number = 10;
do {
HubGetPortStatus (
UsbIo,
StatusChangePort,
(UINT32 *) &HubPortStatus
);
gBS->Stall (10 * 1000);
Number -= 1;
} while ((HubPortStatus.PortStatus & USB_PORT_STAT_RESET) == 1 && Number > 0);
if (Number == 0) {
//
// Cannot reset port, return error
//
DEBUG ((gUSBErrorLevel, "Reset Port Failed\n"));
gBS->FreePool (NewDevice);
return ;
}
//
// Check high speed or full speed device
//
if (HubPortStatus.PortStatus & USB_PORT_STAT_LOW_SPEED) {
DEBUG ((gUSBDebugLevel, "Low Speed Device Attached to Hub\n"));
NewDevice->DeviceSpeed = EFI_USB_SPEED_LOW;
} else if (HubPortStatus.PortStatus & USB_PORT_STAT_HIGH_SPEED) {
DEBUG ((gUSBDebugLevel, "High Speed Device Attached to Hub\n"));
NewDevice->DeviceSpeed = EFI_USB_SPEED_HIGH;
} else {
DEBUG ((gUSBDebugLevel, "Full Speed Device Attached to Hub\n"));
NewDevice->DeviceSpeed = EFI_USB_SPEED_FULL;
}
//
// Configure that device
//
Status = UsbDeviceConfiguration (
HubController,
HostController,
(UINT8) (StatusChangePort - 1),
NewDevice
);
if (EFI_ERROR (Status)) {
gBS->FreePool (NewDevice);
return ;
}
//
// Add this device to the usb bus tree
// StatusChangePort is begin from 1,
//
HubController->Children[StatusChangePort - 1] = NewDevice;
for (Index2 = 0; Index2 < NewDevice->NumOfControllers; Index2++) {
//
// If this device is hub, add to the hub index
//
NewController = NewDevice->UsbController[Index2];
//
// Connect the controller to the driver image
//
Status = gBS->ConnectController (
NewController->Handle,
NULL,
NULL,
TRUE
);
//
// If connect success, we need to disconnect when
// stop the controller, otherwise we need not call
// gBS->DisconnectController ()
// This is used by those usb devices we don't plan
// to support. We can allocate
// controller handles for them, but we don't have
// device drivers to manage them.
//
NewController->IsManagedByDriver = (BOOLEAN) (!EFI_ERROR (Status));
//
// If this device is hub, add to the hub index
//
if (IsHub (NewController)) {
NewController->IsUsbHub = TRUE;
//
// Configure Hub
//
Status = DoHubConfig (NewController);
if (EFI_ERROR (Status)) {
continue;
}
//
// Create an event to do hub enumeration
//
gBS->CreateEvent (
EFI_EVENT_NOTIFY_SIGNAL,
EFI_TPL_CALLBACK,
HubEnumeration,
NewController,
&NewController->HubNotify
);
//
// Add request to do query hub status
// change endpoint
//
UsbIo = &NewController->UsbIo;
UsbIo->UsbAsyncInterruptTransfer (
UsbIo,
NewController->HubEndpointAddress, // Hub endpoint address
TRUE,
100,
1, // Hub ports < 7
OnHubInterruptComplete,
NewController
);
}
}
} else {
//
// Something disconnected from USB hub
//
DEBUG ((gUSBDebugLevel, "Something Device Detached on Hub port\n"));
OldUsbIoDevice = HubController->Children[StatusChangePort - 1];
UsbDeviceDeConfiguration (OldUsbIoDevice);
HubController->Children[StatusChangePort - 1] = NULL;
}
return ;
}
return ;
}
STATIC
USB_IO_CONTROLLER_DEVICE *
CreateUsbIoControllerDevice (
VOID
)
/*++
Routine Description:
Allocate a structure for USB_IO_CONTROLLER_DEVICE
Arguments:
N/A
Returns:
A pointer to a USB_IO_CONTROLLER_DEVICE structure,
Or NULL.
--*/
{
USB_IO_CONTROLLER_DEVICE *UsbIoControllerDev;
//
// Allocate USB_IO_CONTROLLER_DEVICE structure
//
UsbIoControllerDev = NULL;
UsbIoControllerDev = AllocateZeroPool (sizeof (USB_IO_CONTROLLER_DEVICE));
if (UsbIoControllerDev == NULL) {
return NULL;
}
UsbIoControllerDev->Signature = USB_IO_CONTROLLER_SIGNATURE;
return UsbIoControllerDev;
}
STATIC
EFI_STATUS
InitUsbIoController (
IN USB_IO_CONTROLLER_DEVICE *UsbIoController
)
/*++
Routine Description:
Init and install EFI_USB_IO_PROTOCOL onto that controller.
Arguments:
UsbIoController - The Controller to be operated.
Returns:
EFI_SUCCESS
Others
--*/
{
USB_DEVICE_PATH UsbNode;
EFI_STATUS Status;
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
EFI_USB_HC_PROTOCOL *UsbHcProtocol;
EFI_USB2_HC_PROTOCOL *Usb2HcProtocol;
//
// Build the child device path for each new USB_IO device
//
ZeroMem (&UsbNode, sizeof (UsbNode));
UsbNode.Header.Type = MESSAGING_DEVICE_PATH;
UsbNode.Header.SubType = MSG_USB_DP;
SetDevicePathNodeLength (&UsbNode.Header, sizeof (UsbNode));
UsbNode.InterfaceNumber = UsbIoController->InterfaceNumber;
UsbNode.ParentPortNumber = UsbIoController->ParentPort;
ParentDevicePath = UsbIoController->Parent->DevicePath;
UsbIoController->DevicePath =
AppendDevicePathNode (ParentDevicePath, &UsbNode.Header);
if (UsbIoController->DevicePath == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Status = gBS->InstallMultipleProtocolInterfaces (
&UsbIoController->Handle,
&gEfiDevicePathProtocolGuid,
UsbIoController->DevicePath,
&gEfiUsbIoProtocolGuid,
&UsbIoController->UsbIo,
NULL
);
if (EFI_ERROR (Status)) {
return Status;
}
if (UsbIoController->UsbDevice->BusController->Hc2ProtocolSupported) {
Status = gBS->OpenProtocol (
UsbIoController->HostController,
&gEfiUsb2HcProtocolGuid,
(VOID **)&Usb2HcProtocol,
gUsbBusDriverBinding.DriverBindingHandle,
UsbIoController->Handle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
} else {
Status = gBS->OpenProtocol (
UsbIoController->HostController,
&gEfiUsbHcProtocolGuid,
(VOID **)&UsbHcProtocol,
gUsbBusDriverBinding.DriverBindingHandle,
UsbIoController->Handle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
}
return Status;
}
STATIC
EFI_STATUS
ParentPortReset (
IN USB_IO_CONTROLLER_DEVICE *UsbIoController,
IN BOOLEAN ReConfigure,
IN UINT8 RetryTimes
)
/*++
Routine Description:
Reset parent hub port to which this device is connected.
Arguments:
UsbIoController - Indicating the Usb Controller Device.
ReConfigure - Do we need to reconfigure it.
RetryTimes - Retry Times when failed
Returns:
EFI_SUCCESS
EFI_DEVICE_ERROR
--*/
{
USB_IO_DEVICE *ParentIoDev;
USB_IO_DEVICE *UsbIoDev;
USB_IO_CONTROLLER_DEVICE *ParentController;
UINT8 HubPort;
UINT32 Status;
EFI_STATUS Result;
EFI_USB_IO_PROTOCOL *UsbIo;
UINT8 Address;
ParentController = UsbIoController->Parent;
ParentIoDev = ParentController->UsbDevice;
UsbIoDev = UsbIoController->UsbDevice;
HubPort = UsbIoController->ParentPort;
gBS->Stall (100 * 1000);
if (ParentIoDev->DeviceAddress == 1) {
DEBUG ((gUSBDebugLevel, "Reset from Root Hub 0x%x\n", HubPort));
ResetRootPort (ParentIoDev->BusController, HubPort, RetryTimes);
} else {
DEBUG ((gUSBDebugLevel, "Reset from Hub, Addr 0x%x\n", ParentIoDev->DeviceAddress));
ResetHubPort (ParentController, HubPort + 1);
}
//
// If we only need port reset, just return
//
if (!ReConfigure) {
return EFI_SUCCESS;
}
//
// Re-config that USB device
//
UsbIo = &UsbIoController->UsbIo;
//
// Assign a unique address to this device
//
Address = UsbIoDev->DeviceAddress;
UsbIoDev->DeviceAddress = 0;
Result = UsbSetDeviceAddress (UsbIo, Address, &Status);
UsbIoDev->DeviceAddress = Address;
if (EFI_ERROR (Result)) {
return EFI_DEVICE_ERROR;
}
//
// Set the device to the default configuration
//
Result = UsbSetDefaultConfiguration (UsbIoDev);
if (EFI_ERROR (Result)) {
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
UsbPortReset (
IN EFI_USB_IO_PROTOCOL *This
)
/*++
Routine Description:
Resets and reconfigures the USB controller. This function will
work for all USB devices except USB Hub Controllers.
Arguments:
This - Indicates the calling context.
Returns:
EFI_SUCCESS
EFI_INVALID_PARAMETER
EFI_DEVICE_ERROR
--*/
{
USB_IO_CONTROLLER_DEVICE *UsbIoController;
UsbIoController = USB_IO_CONTROLLER_DEVICE_FROM_USB_IO_THIS (This);
if (IsHub (UsbIoController)) {
return EFI_INVALID_PARAMETER;
}
//
// Since at this time, this device has already been configured,
// it needs to be re-configured.
//
return ParentPortReset (UsbIoController, TRUE, 0);
}
EFI_STATUS
ResetRootPort (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
IN UINT8 PortNum,
IN UINT8 RetryTimes
)
/*++
Routine Description:
Reset Root Hub port.
Arguments:
UsbBusDev - Bus controller of the device.
PortNum - The given port to be reset.
RetryTimes - RetryTimes when failed
Returns:
EFI_SUCCESS
EFI_DEVICE_ERROR
--*/
{
EFI_STATUS Status;
EFI_USB_PORT_STATUS PortStatus;
//
// reset root port
//
Status = UsbVirtualHcSetRootHubPortFeature (
UsbBusDev,
PortNum,
EfiUsbPortReset
);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
gBS->Stall (50 * 1000);
//
// clear reset root port
//
Status = UsbVirtualHcClearRootHubPortFeature (
UsbBusDev,
PortNum,
EfiUsbPortReset
);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
gBS->Stall (1000);
Status = UsbVirtualHcClearRootHubPortFeature (
UsbBusDev,
PortNum,
EfiUsbPortConnectChange
);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
UsbVirtualHcGetRootHubPortStatus (
UsbBusDev,
PortNum,
&PortStatus
);
if (PortStatus.PortStatus & USB_PORT_STAT_OWNER) {
//
// Set port enable
//
Status = UsbVirtualHcSetRootHubPortFeature (
UsbBusDev,
PortNum,
EfiUsbPortEnable
);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
Status = UsbVirtualHcClearRootHubPortFeature (
UsbBusDev,
PortNum,
EfiUsbPortEnableChange
);
}
gBS->Stall ((1 + RetryTimes) * 50 * 1000);
return EFI_SUCCESS;
}
EFI_STATUS
ResetHubPort (
IN USB_IO_CONTROLLER_DEVICE *UsbIoController,
IN UINT8 PortIndex
)
/*++
Routine Description:
Reset Hub port.
Arguments:
UsbIoController - The USB_IO_CONTROLLER_DEVICE instance.
PortIndex - The given port to be reset.
Returns:
EFI_SUCCESS
EFI_DEVICE_ERROR
--*/
{
EFI_USB_IO_PROTOCOL *UsbIo;
EFI_USB_PORT_STATUS HubPortStatus;
UINT8 Number;
ASSERT (UsbIoController->IsUsbHub == TRUE);
UsbIo = &UsbIoController->UsbIo;
HubSetPortFeature (
UsbIo,
PortIndex,
EfiUsbPortReset
);
gBS->Stall (10 * 1000);
//
// Wait for port reset complete
//
Number = 10;
do {
HubGetPortStatus (
UsbIo,
PortIndex,
(UINT32 *) &HubPortStatus
);
gBS->Stall (10 * 100);
Number -= 1;
} while ((HubPortStatus.PortChangeStatus & USB_PORT_STAT_C_RESET) == 0 && Number > 0);
if (Number == 0) {
//
// Cannot reset port, return error
//
return EFI_DEVICE_ERROR;
}
gBS->Stall (1000);
HubGetPortStatus (
UsbIo,
PortIndex,
(UINT32 *) &HubPortStatus
);
//
// reset port will cause some bits change, clear them
//
if (HubPortStatus.PortChangeStatus & USB_PORT_STAT_C_ENABLE) {
DEBUG ((gUSBDebugLevel, "Port Enable Change\n"));
HubClearPortFeature (
UsbIo,
PortIndex,
EfiUsbPortEnableChange
);
}
if (HubPortStatus.PortChangeStatus & USB_PORT_STAT_C_RESET) {
DEBUG ((gUSBDebugLevel, "Port Reset Change\n"));
HubClearPortFeature (
UsbIo,
PortIndex,
EfiUsbPortResetChange
);
}
return EFI_SUCCESS;
}
STATIC
EFI_STATUS
ReportUsbStatusCode (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusController,
IN EFI_STATUS_CODE_TYPE Type,
IN EFI_STATUS_CODE_VALUE Code
)
/*++
Routine Description:
report a error Status code of USB bus driver controller
Arguments:
UsbBusController - USB_BUS_CONTROLLER_DEVICE
Type - EFI_STATUS_CODE_TYPE
Code - EFI_STATUS_CODE_VALUE
Returns:
None
--*/
{
return REPORT_STATUS_CODE_WITH_DEVICE_PATH (
Type,
Code,
UsbBusController->DevicePath
);
}
EFI_STATUS
IsDeviceDisconnected (
IN USB_IO_CONTROLLER_DEVICE *UsbIoController,
IN OUT BOOLEAN *Disconnected
)
/*++
Routine Description:
Reset if the device is disconencted or not
Arguments:
UsbIoController - Indicating the Usb Controller Device.
Disconnected - Indicate whether the device is disconencted or not
Returns:
EFI_SUCCESS
EFI_DEVICE_ERROR
--*/
{
USB_IO_DEVICE *ParentIoDev;
USB_IO_DEVICE *UsbIoDev;
USB_IO_CONTROLLER_DEVICE *ParentController;
UINT8 HubPort;
EFI_STATUS Status;
EFI_USB_IO_PROTOCOL *UsbIo;
EFI_USB_PORT_STATUS PortStatus;
ParentController = UsbIoController->Parent;
ParentIoDev = ParentController->UsbDevice;
UsbIoDev = UsbIoController->UsbDevice;
HubPort = UsbIoController->ParentPort;
if (ParentIoDev->DeviceAddress == 1) {
//
// Connected to the root hub
//
UsbVirtualHcGetRootHubPortStatus (
ParentIoDev->BusController,
HubPort,
&PortStatus
);
} else {
UsbIo = &UsbIoController->UsbIo;
Status = HubGetPortStatus (
&ParentController->UsbIo,
HubPort + 1,
(UINT32 *) &PortStatus
);
if (EFI_ERROR (Status)) {
return IsDeviceDisconnected (ParentController, Disconnected);
}
}
*Disconnected = FALSE;
if (!IsPortConnect (PortStatus.PortStatus)) {
*Disconnected = TRUE;
}
return EFI_SUCCESS;
}
STATIC
EFI_STATUS
UsbSetTransactionTranslator (
IN USB_IO_CONTROLLER_DEVICE *ParentHubController,
IN UINT8 ParentPort,
IN OUT USB_IO_DEVICE *Device
)
/*++
Routine Description:
Set Transaction Translator parameter
Arguments:
ParentHubController - Controller structure of the parent Hub device
ParentPort - Number of parent port
Device - Structure of the device
Returns:
EFI_SUCCESS Success
EFI_OUT_OF_RESOURCES Cannot allocate resources
--*/
{
USB_IO_CONTROLLER_DEVICE *AncestorHubController;
AncestorHubController = ParentHubController;
Device->Translator = NULL;
if (EFI_USB_SPEED_HIGH == Device->DeviceSpeed) {
return EFI_SUCCESS;
}
do {
if (EFI_USB_SPEED_HIGH == AncestorHubController->UsbDevice->DeviceSpeed) {
break;
}
if (NULL == AncestorHubController->Parent) {
return EFI_SUCCESS;
}
AncestorHubController = AncestorHubController->Parent;
} while (1);
Device->Translator = AllocatePool (sizeof (EFI_USB2_HC_TRANSACTION_TRANSLATOR));
if (NULL == Device->Translator) {
return EFI_OUT_OF_RESOURCES;
}
Device->Translator->TranslatorHubAddress = AncestorHubController->UsbDevice->DeviceAddress;
Device->Translator->TranslatorPortNumber = ParentPort;
return EFI_SUCCESS;
}
STATIC
EFI_STATUS
UsbUnsetTransactionTranslator (
USB_IO_DEVICE *Device
)
/*++
Routine Description:
Unset Transaction Translator parameter
Arguments:
Device - Structure of the device
Returns:
EFI_SUCCESS Success
--*/
{
if (Device->Translator) {
gBS->FreePool (Device->Translator);
Device->Translator = NULL;
}
return EFI_SUCCESS;
}
STATIC
EFI_STATUS
IdentifyDeviceSpeed (
USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
USB_IO_DEVICE *NewDevice,
UINT8 Index
)
/*++
Routine Description:
Identify speed of USB device
Arguments:
UsbBusDev - UsbBus controller structure of the device
NewDevice - Devcie controller structure
Index - Number of the port
Returns:
EFI_SUCCESS Success
EFI_NOT_FOUND Device release to CHC or can't be found
--*/
{
EFI_STATUS Status;
EFI_USB_PORT_STATUS HubPortStatus;
UsbVirtualHcGetRootHubPortStatus (
UsbBusDev,
Index,
(EFI_USB_PORT_STATUS *) &HubPortStatus
);
//
// Check device device
//
if (!(HubPortStatus.PortStatus & USB_PORT_STAT_OWNER)) {
//
// EHC Port Owner
//
if (HubPortStatus.PortStatus & USB_PORT_STAT_HIGH_SPEED) {
DEBUG ((gUSBDebugLevel, "High Speed Device attached to EHC\n"));
NewDevice->DeviceSpeed = EFI_USB_SPEED_HIGH;
} else {
Status = ReleasePortToCHC (UsbBusDev, Index);
if (EFI_ERROR (Status)) {
DEBUG ((gUSBErrorLevel, "Fail to release port to CHC\n"));
} else {
DEBUG ((gUSBDebugLevel, "Success to release port to CHC\n"));
}
return EFI_DEVICE_ERROR;
}
} else {
//
// CHC Port Owner
//
if (HubPortStatus.PortStatus & USB_PORT_STAT_LOW_SPEED) {
DEBUG ((gUSBDebugLevel, "Low Speed Device attached to CHC\n"));
NewDevice->DeviceSpeed = EFI_USB_SPEED_LOW;
} else {
DEBUG ((gUSBDebugLevel, "FULL Speed Device attached to CHC\n"));
NewDevice->DeviceSpeed = EFI_USB_SPEED_FULL;
}
}
return EFI_SUCCESS;
}
STATIC
EFI_STATUS
ReleasePortToCHC (
USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
UINT8 PortNum
)
/*++
Routine Description:
Set bit to release the port owner to CHC
Arguments:
UsbBusDev - UsbBus controller structure of the device
PortNum - Number of the port
Returns:
EFI_SUCCESS Success
EFI_DEVICE_ERROR Fail
--*/
{
EFI_STATUS Status;
Status = UsbVirtualHcSetRootHubPortFeature (
UsbBusDev,
PortNum,
EfiUsbPortOwner
);
gBS->Stall (100 * 1000);
return Status;
}
EFI_STATUS
EFIAPI
UsbVirtualHcGetCapability (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
OUT UINT8 *MaxSpeed,
OUT UINT8 *PortNumber,
OUT UINT8 *Is64BitCapable
)
/*++
Routine Description:
Virtual interface to Retrieves the capablility of root hub ports
for both Hc2 and Hc protocol.
Arguments:
UsbBusDev - A pointer to bus controller of the device.
MaxSpeed - A pointer to the number of the host controller.
PortNumber - A pointer to the number of the root hub ports.
Is64BitCapable - A pointer to the flag for whether controller supports
64-bit memory addressing.
Returns:
EFI_SUCCESS
The host controller capability were retrieved successfully.
EFI_INVALID_PARAMETER
MaxSpeed or PortNumber or Is64BitCapable is NULL.
EFI_DEVICE_ERROR
An error was encountered while attempting to retrieve the capabilities.
--*/
{
EFI_STATUS Status;
Status = EFI_SUCCESS;
if (UsbBusDev->Hc2ProtocolSupported) {
Status = UsbBusDev->Usb2HCInterface->GetCapability (
UsbBusDev->Usb2HCInterface,
MaxSpeed,
PortNumber,
Is64BitCapable
);
} else {
Status = UsbBusDev->UsbHCInterface->GetRootHubPortNumber (
UsbBusDev->UsbHCInterface,
PortNumber
);
*MaxSpeed = EFI_USB_SPEED_FULL;
*Is64BitCapable = (UINT8) FALSE;
}
return Status;
}
EFI_STATUS
EFIAPI
UsbVirtualHcReset (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
IN UINT16 Attributes
)
/*++
Routine Description:
Virtual interface to provides software reset for the USB host controller
for both Hc2 and Hc protocol.
Arguments:
UsbBusDev - A pointer to bus controller of the device.
Attributes - A bit mask of the reset operation to perform.
See below for a list of the supported bit mask values.
#define EFI_USB_HC_RESET_GLOBAL 0x0001 // Hc2 and Hc
#define EFI_USB_HC_RESET_HOST_CONTROLLER 0x0002 // Hc2 and Hc
#define EFI_USB_HC_RESET_GLOBAL_WITH_DEBUG 0x0004 // Hc2
#define EFI_USB_HC_RESET_HOST_WITH_DEBUG 0x0008 // Hc2
EFI_USB_HC_RESET_GLOBAL
If this bit is set, a global reset signal will be sent to the USB bus.
This resets all of the USB bus logic, including the USB host
controller hardware and all the devices attached on the USB bus.
EFI_USB_HC_RESET_HOST_CONTROLLER
If this bit is set, the USB host controller hardware will be reset.
No reset signal will be sent to the USB bus.
EFI_USB_HC_RESET_GLOBAL_WITH_DEBUG
If this bit is set, a global reset signal will be sent to the USB bus.
This resets all of the USB bus logic, including the USB host
controller hardware and all the devices attached on the USB bus.
If this is an EHCI controller and the debug port has configured, then
this is will still reset the host controller.
EFI_USB_HC_RESET_HOST_WITH_DEBUG
If this bit is set, the USB host controller hardware will be reset.
If this is an EHCI controller and the debug port has been configured,
then this will still reset the host controller.
Returns:
EFI_SUCCESS
The reset operation succeeded.
EFI_INVALID_PARAMETER
Attributes is not valid.
EFI_UNSUPPOURTED
The type of reset specified by Attributes is not currently supported by
the host controller hardware.
EFI_ACCESS_DENIED
Reset operation is rejected due to the debug port being configured and
active; only EFI_USB_HC_RESET_GLOBAL_WITH_DEBUG or
EFI_USB_HC_RESET_HOST_WITH_DEBUG reset Atrributes can be used to
perform reset operation for this host controller.
EFI_DEVICE_ERROR
An error was encountered while attempting to perform
the reset operation.
--*/
{
EFI_STATUS Status;
Status = EFI_SUCCESS;
if (UsbBusDev->Hc2ProtocolSupported) {
Status = UsbBusDev->Usb2HCInterface->Reset (
UsbBusDev->Usb2HCInterface,
EFI_USB_HC_RESET_GLOBAL
);
} else {
Status = UsbBusDev->UsbHCInterface->Reset (
UsbBusDev->UsbHCInterface,
EFI_USB_HC_RESET_GLOBAL
);
}
return Status;
}
EFI_STATUS
EFIAPI
UsbVirtualHcGetState (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
OUT EFI_USB_HC_STATE *State
)
/*++
Routine Description:
Virtual interface to retrieves current state of the USB host controller
for both Hc2 and Hc protocol.
Arguments:
UsbBusDev - A pointer to bus controller of the device.
State - A pointer to the EFI_USB_HC_STATE data structure that
indicates current state of the USB host controller.
Type EFI_USB_HC_STATE is defined below.
typedef enum {
EfiUsbHcStateHalt,
EfiUsbHcStateOperational,
EfiUsbHcStateSuspend,
EfiUsbHcStateMaximum
} EFI_USB_HC_STATE;
Returns:
EFI_SUCCESS
The state information of the host controller was returned in State.
EFI_INVALID_PARAMETER
State is NULL.
EFI_DEVICE_ERROR
An error was encountered while attempting to retrieve the
host controller's current state.
--*/
{
EFI_STATUS Status;
Status = EFI_SUCCESS;
if (UsbBusDev->Hc2ProtocolSupported) {
Status = UsbBusDev->Usb2HCInterface->GetState (
UsbBusDev->Usb2HCInterface,
State
);
} else {
Status = UsbBusDev->UsbHCInterface->GetState (
UsbBusDev->UsbHCInterface,
State
);
}
return Status;
}
EFI_STATUS
EFIAPI
UsbVirtualHcSetState (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
IN EFI_USB_HC_STATE State
)
/*++
Routine Description:
Virtual interface to sets the USB host controller to a specific state
for both Hc2 and Hc protocol.
Arguments:
UsbBusDev - A pointer to bus controller of the device.
State - Indicates the state of the host controller that will be set.
Returns:
EFI_SUCCESS
The USB host controller was successfully placed in the state
specified by State.
EFI_INVALID_PARAMETER
State is invalid.
EFI_DEVICE_ERROR
Failed to set the state specified by State due to device error.
--*/
{
EFI_STATUS Status;
Status = EFI_SUCCESS;
if (UsbBusDev->Hc2ProtocolSupported) {
Status = UsbBusDev->Usb2HCInterface->SetState (
UsbBusDev->Usb2HCInterface,
State
);
} else {
Status = UsbBusDev->UsbHCInterface->SetState (
UsbBusDev->UsbHCInterface,
State
);
}
return Status;
}
EFI_STATUS
EFIAPI
UsbVirtualHcGetRootHubPortStatus (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
IN UINT8 PortNumber,
OUT EFI_USB_PORT_STATUS *PortStatus
)
/*++
Routine Description:
Virtual interface to retrieves the current status of a USB root hub port
both for Hc2 and Hc protocol.
Arguments:
UsbBusDev - A pointer to bus controller of the device.
PortNumber - Specifies the root hub port from which the status
is to be retrieved. This value is zero-based. For example,
if a root hub has two ports, then the first port is numbered 0,
and the second port is numbered 1.
PortStatus - A pointer to the current port status bits and
port status change bits.
Returns:
EFI_SUCCESS The status of the USB root hub port specified by PortNumber
was returned in PortStatus.
EFI_INVALID_PARAMETER PortNumber is invalid.
EFI_DEVICE_ERROR Can't read register
--*/
{
EFI_STATUS Status;
Status = EFI_SUCCESS;
if (UsbBusDev->Hc2ProtocolSupported) {
Status = UsbBusDev->Usb2HCInterface->GetRootHubPortStatus (
UsbBusDev->Usb2HCInterface,
PortNumber,
PortStatus
);
} else {
Status = UsbBusDev->UsbHCInterface->GetRootHubPortStatus (
UsbBusDev->UsbHCInterface,
PortNumber,
PortStatus
);
}
return Status;
}
EFI_STATUS
EFIAPI
UsbVirtualHcSetRootHubPortFeature (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
IN UINT8 PortNumber,
IN EFI_USB_PORT_FEATURE PortFeature
)
/*++
Routine Description:
Virual interface to sets a feature for the specified root hub port
for both Hc2 and Hc protocol.
Arguments:
UsbBusDev - A pointer to bus controller of the device.
PortNumber - Specifies the root hub port whose feature
is requested to be set.
PortFeature - Indicates the feature selector associated
with the feature set request.
Returns:
EFI_SUCCESS
The feature specified by PortFeature was set for the
USB root hub port specified by PortNumber.
EFI_INVALID_PARAMETER
PortNumber is invalid or PortFeature is invalid.
EFI_DEVICE_ERROR
Can't read register
--*/
{
EFI_STATUS Status;
Status = EFI_SUCCESS;
if (UsbBusDev->Hc2ProtocolSupported) {
Status = UsbBusDev->Usb2HCInterface->SetRootHubPortFeature (
UsbBusDev->Usb2HCInterface,
PortNumber,
PortFeature
);
} else {
Status = UsbBusDev->UsbHCInterface->SetRootHubPortFeature (
UsbBusDev->UsbHCInterface,
PortNumber,
PortFeature
);
}
return Status;
}
EFI_STATUS
EFIAPI
UsbVirtualHcClearRootHubPortFeature (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
IN UINT8 PortNumber,
IN EFI_USB_PORT_FEATURE PortFeature
)
/*++
Routine Description:
Virtual interface to clears a feature for the specified root hub port
for both Hc2 and Hc protocol.
Arguments:
UsbBusDev - A pointer to bus controller of the device.
PortNumber - Specifies the root hub port whose feature
is requested to be cleared.
PortFeature - Indicates the feature selector associated with the
feature clear request.
Returns:
EFI_SUCCESS
The feature specified by PortFeature was cleared for the
USB root hub port specified by PortNumber.
EFI_INVALID_PARAMETER
PortNumber is invalid or PortFeature is invalid.
EFI_DEVICE_ERROR
Can't read register
--*/
{
EFI_STATUS Status;
Status = EFI_SUCCESS;
if (UsbBusDev->Hc2ProtocolSupported) {
Status = UsbBusDev->Usb2HCInterface->ClearRootHubPortFeature (
UsbBusDev->Usb2HCInterface,
PortNumber,
PortFeature
);
} else {
Status = UsbBusDev->UsbHCInterface->ClearRootHubPortFeature (
UsbBusDev->UsbHCInterface,
PortNumber,
PortFeature
);
}
return Status;
}
EFI_STATUS
EFIAPI
UsbVirtualHcControlTransfer (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
IN UINT8 DeviceAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN EFI_USB_DEVICE_REQUEST *Request,
IN EFI_USB_DATA_DIRECTION TransferDirection,
IN OUT VOID *Data,
IN OUT UINTN *DataLength,
IN UINTN TimeOut,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
OUT UINT32 *TransferResult
)
/*++
Routine Description:
Virtual interface to submits control transfer to a target USB device
for both Hc2 and Hc protocol.
Arguments:
UsbBusDev - A pointer to bus controller of the device.
DeviceAddress - Represents the address of the target device on the USB,
which is assigned during USB enumeration.
DeviceSpeed - Indicates target device speed.
MaximumPacketLength - Indicates the maximum packet size that the
default control transfer endpoint is capable of
sending or receiving.
Request - A pointer to the USB device request that will be sent
to the USB device.
TransferDirection - Specifies the data direction for the transfer.
There are three values available, DataIn, DataOut
and NoData.
Data - A pointer to the buffer of data that will be transmitted
to USB device or received from USB device.
DataLength - Indicates the size, in bytes, of the data buffer
specified by Data.
TimeOut - Indicates the maximum time, in microseconds,
which the transfer is allowed to complete.
Translator - A pointr to the transaction translator data.
TransferResult - A pointer to the detailed result information generated
by this control transfer.
Returns:
EFI_SUCCESS
The control transfer was completed successfully.
EFI_OUT_OF_RESOURCES
The control transfer could not be completed due to a lack of resources.
EFI_INVALID_PARAMETER
Some parameters are invalid.
EFI_TIMEOUT
The control transfer failed due to timeout.
EFI_DEVICE_ERROR
The control transfer failed due to host controller or device error.
Caller should check TranferResult for detailed error information.
--*/
{
EFI_STATUS Status;
BOOLEAN IsSlowDevice;
Status = EFI_SUCCESS;
if (UsbBusDev->Hc2ProtocolSupported) {
Status = UsbBusDev->Usb2HCInterface->ControlTransfer (
UsbBusDev->Usb2HCInterface,
DeviceAddress,
DeviceSpeed,
MaximumPacketLength,
Request,
TransferDirection,
Data,
DataLength,
TimeOut,
Translator,
TransferResult
);
} else {
IsSlowDevice = (EFI_USB_SPEED_LOW == DeviceSpeed) ? TRUE : FALSE;
Status = UsbBusDev->UsbHCInterface->ControlTransfer (
UsbBusDev->UsbHCInterface,
DeviceAddress,
IsSlowDevice,
(UINT8) MaximumPacketLength,
Request,
TransferDirection,
Data,
DataLength,
TimeOut,
TransferResult
);
}
return Status;
}
EFI_STATUS
EFIAPI
UsbVirtualHcBulkTransfer (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
IN UINT8 DeviceAddress,
IN UINT8 EndPointAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN UINT8 DataBuffersNumber,
IN OUT VOID *Data[EFI_USB_MAX_BULK_BUFFER_NUM],
IN OUT UINTN *DataLength,
IN OUT UINT8 *DataToggle,
IN UINTN TimeOut,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
OUT UINT32 *TransferResult
)
/*++
Routine Description:
Virtual interface to submits bulk transfer to a bulk endpoint of a USB device
both for Hc2 and Hc protocol.
Arguments:
UsbBusDev - A pointer to bus controller of the device.
DeviceAddress - Represents the address of the target device on the USB,
which is assigned during USB enumeration.
EndPointAddress - The combination of an endpoint number and an
endpoint direction of the target USB device.
Each endpoint address supports data transfer in
one direction except the control endpoint
(whose default endpoint address is 0).
It is the caller's responsibility to make sure that
the EndPointAddress represents a bulk endpoint.
DeviceSpeed - Indicates device speed. The supported values are EFI_USB_SPEED_FULL
and EFI_USB_SPEED_HIGH.
MaximumPacketLength - Indicates the maximum packet size the target endpoint
is capable of sending or receiving.
DataBuffersNumber - Number of data buffers prepared for the transfer.
Data - Array of pointers to the buffers of data that will be transmitted
to USB device or received from USB device.
DataLength - When input, indicates the size, in bytes, of the data buffer
specified by Data. When output, indicates the actually
transferred data size.
DataToggle - A pointer to the data toggle value. On input, it indicates
the initial data toggle value the bulk transfer should adopt;
on output, it is updated to indicate the data toggle value
of the subsequent bulk transfer.
Translator - A pointr to the transaction translator data.
TimeOut - Indicates the maximum time, in microseconds, which the
transfer is allowed to complete.
TransferResult - A pointer to the detailed result information of the
bulk transfer.
Returns:
EFI_SUCCESS
The bulk transfer was completed successfully.
EFI_OUT_OF_RESOURCES
The bulk transfer could not be submitted due to lack of resource.
EFI_INVALID_PARAMETER
Some parameters are invalid.
EFI_TIMEOUT
The bulk transfer failed due to timeout.
EFI_DEVICE_ERROR
The bulk transfer failed due to host controller or device error.
Caller should check TranferResult for detailed error information.
--*/
{
EFI_STATUS Status;
Status = EFI_SUCCESS;
if (UsbBusDev->Hc2ProtocolSupported) {
Status = UsbBusDev->Usb2HCInterface->BulkTransfer (
UsbBusDev->Usb2HCInterface,
DeviceAddress,
EndPointAddress,
DeviceSpeed,
MaximumPacketLength,
DataBuffersNumber,
Data,
DataLength,
DataToggle,
TimeOut,
Translator,
TransferResult
);
} else {
Status = UsbBusDev->UsbHCInterface->BulkTransfer (
UsbBusDev->UsbHCInterface,
DeviceAddress,
EndPointAddress,
(UINT8) MaximumPacketLength,
*Data,
DataLength,
DataToggle,
TimeOut,
TransferResult
);
}
return Status;
}
EFI_STATUS
EFIAPI
UsbVirtualHcAsyncInterruptTransfer (
IN USB_BUS_CONTROLLER_DEVICE * UsbBusDev,
IN UINT8 DeviceAddress,
IN UINT8 EndPointAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN BOOLEAN IsNewTransfer,
IN OUT UINT8 *DataToggle,
IN UINTN PollingInterval,
IN UINTN DataLength,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR * Translator,
IN EFI_ASYNC_USB_TRANSFER_CALLBACK CallBackFunction,
IN VOID *Context OPTIONAL
)
/*++
Routine Description:
Virtual interface to submits an asynchronous interrupt transfer to an
interrupt endpoint of a USB device for both Hc2 and Hc protocol.
Arguments:
UsbBusDev - A pointer to bus controller of the device.
DeviceAddress - Represents the address of the target device on the USB,
which is assigned during USB enumeration.
EndPointAddress - The combination of an endpoint number and an endpoint
direction of the target USB device. Each endpoint address
supports data transfer in one direction except the
control endpoint (whose default endpoint address is 0).
It is the caller's responsibility to make sure that
the EndPointAddress represents an interrupt endpoint.
DeviceSpeed - Indicates device speed.
MaximumPacketLength - Indicates the maximum packet size the target endpoint
is capable of sending or receiving.
IsNewTransfer - If TRUE, an asynchronous interrupt pipe is built between
the host and the target interrupt endpoint.
If FALSE, the specified asynchronous interrupt pipe
is canceled.
DataToggle - A pointer to the data toggle value. On input, it is valid
when IsNewTransfer is TRUE, and it indicates the initial
data toggle value the asynchronous interrupt transfer
should adopt.
On output, it is valid when IsNewTransfer is FALSE,
and it is updated to indicate the data toggle value of
the subsequent asynchronous interrupt transfer.
PollingInterval - Indicates the interval, in milliseconds, that the
asynchronous interrupt transfer is polled.
This parameter is required when IsNewTransfer is TRUE.
DataLength - Indicates the length of data to be received at the
rate specified by PollingInterval from the target
asynchronous interrupt endpoint. This parameter
is only required when IsNewTransfer is TRUE.
Translator - A pointr to the transaction translator data.
CallBackFunction - The Callback function.This function is called at the
rate specified by PollingInterval.This parameter is
only required when IsNewTransfer is TRUE.
Context - The context that is passed to the CallBackFunction.
- This is an optional parameter and may be NULL.
Returns:
EFI_SUCCESS
The asynchronous interrupt transfer request has been successfully
submitted or canceled.
EFI_INVALID_PARAMETER
Some parameters are invalid.
EFI_OUT_OF_RESOURCES
The request could not be completed due to a lack of resources.
EFI_DEVICE_ERROR
Can't read register
--*/
{
EFI_STATUS Status;
BOOLEAN IsSlowDevice;
Status = EFI_SUCCESS;
if (UsbBusDev->Hc2ProtocolSupported) {
Status = UsbBusDev->Usb2HCInterface->AsyncInterruptTransfer (
UsbBusDev->Usb2HCInterface,
DeviceAddress,
EndPointAddress,
DeviceSpeed,
MaximumPacketLength,
IsNewTransfer,
DataToggle,
PollingInterval,
DataLength,
Translator,
CallBackFunction,
Context
);
} else {
IsSlowDevice = (EFI_USB_SPEED_LOW == DeviceSpeed) ? TRUE : FALSE;
Status = UsbBusDev->UsbHCInterface->AsyncInterruptTransfer (
UsbBusDev->UsbHCInterface,
DeviceAddress,
EndPointAddress,
IsSlowDevice,
(UINT8) MaximumPacketLength,
IsNewTransfer,
DataToggle,
PollingInterval,
DataLength,
CallBackFunction,
Context
);
}
return Status;
}
EFI_STATUS
EFIAPI
UsbVirtualHcSyncInterruptTransfer (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
IN UINT8 DeviceAddress,
IN UINT8 EndPointAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN OUT VOID *Data,
IN OUT UINTN *DataLength,
IN OUT UINT8 *DataToggle,
IN UINTN TimeOut,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
OUT UINT32 *TransferResult
)
/*++
Routine Description:
Vitual interface to submits synchronous interrupt transfer to an interrupt endpoint
of a USB device for both Hc2 and Hc protocol.
Arguments:
UsbBusDev - A pointer to bus controller of the device.
DeviceAddress - Represents the address of the target device on the USB,
which is assigned during USB enumeration.
EndPointAddress - The combination of an endpoint number and an endpoint
direction of the target USB device. Each endpoint
address supports data transfer in one direction
except the control endpoint (whose default
endpoint address is 0). It is the caller's responsibility
to make sure that the EndPointAddress represents
an interrupt endpoint.
DeviceSpeed - Indicates device speed.
MaximumPacketLength - Indicates the maximum packet size the target endpoint
is capable of sending or receiving.
Data - A pointer to the buffer of data that will be transmitted
to USB device or received from USB device.
DataLength - On input, the size, in bytes, of the data buffer specified
by Data. On output, the number of bytes transferred.
DataToggle - A pointer to the data toggle value. On input, it indicates
the initial data toggle value the synchronous interrupt
transfer should adopt;
on output, it is updated to indicate the data toggle value
of the subsequent synchronous interrupt transfer.
TimeOut - Indicates the maximum time, in microseconds, which the
transfer is allowed to complete.
Translator - A pointr to the transaction translator data.
TransferResult - A pointer to the detailed result information from
the synchronous interrupt transfer.
Returns:
EFI_SUCCESS
The synchronous interrupt transfer was completed successfully.
EFI_OUT_OF_RESOURCES
The synchronous interrupt transfer could not be submitted due
to lack of resource.
EFI_INVALID_PARAMETER
Some parameters are invalid.
EFI_TIMEOUT
The synchronous interrupt transfer failed due to timeout.
EFI_DEVICE_ERROR
The synchronous interrupt transfer failed due to host controller
or device error. Caller should check TranferResult for detailed
error information.
--*/
{
EFI_STATUS Status;
BOOLEAN IsSlowDevice;
Status = EFI_SUCCESS;
if (UsbBusDev->Hc2ProtocolSupported) {
Status = UsbBusDev->Usb2HCInterface->SyncInterruptTransfer (
UsbBusDev->Usb2HCInterface,
DeviceAddress,
EndPointAddress,
DeviceSpeed,
MaximumPacketLength,
Data,
DataLength,
DataToggle,
TimeOut,
Translator,
TransferResult
);
} else {
IsSlowDevice = (EFI_USB_SPEED_LOW == DeviceSpeed) ? TRUE : FALSE;
Status = UsbBusDev->UsbHCInterface->SyncInterruptTransfer (
UsbBusDev->UsbHCInterface,
DeviceAddress,
EndPointAddress,
IsSlowDevice,
(UINT8) MaximumPacketLength,
Data,
DataLength,
DataToggle,
TimeOut,
TransferResult
);
}
return Status;
}
EFI_STATUS
EFIAPI
UsbVirtualHcIsochronousTransfer (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
IN UINT8 DeviceAddress,
IN UINT8 EndPointAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN UINT8 DataBuffersNumber,
IN OUT VOID *Data[EFI_USB_MAX_ISO_BUFFER_NUM],
IN UINTN DataLength,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
OUT UINT32 *TransferResult
)
/*++
Routine Description:
Virtual interface to submits isochronous transfer to a target USB device
for both Hc2 and Hc protocol.
Arguments:
UsbBusDev - A pointer to bus controller of the device.
DeviceAddress - Represents the address of the target device on the USB,
which is assigned during USB enumeration.
EndPointAddress - End point address
DeviceSpeed - Indicates device speed.
MaximumPacketLength - Indicates the maximum packet size that the
default control transfer endpoint is capable of
sending or receiving.
DataBuffersNumber - Number of data buffers prepared for the transfer.
Data - Array of pointers to the buffers of data that will be
transmitted to USB device or received from USB device.
DataLength - Indicates the size, in bytes, of the data buffer
specified by Data.
Translator - A pointr to the transaction translator data.
TransferResult - A pointer to the detailed result information generated
by this control transfer.
Returns:
EFI_UNSUPPORTED
--*/
{
return EFI_UNSUPPORTED;
}
EFI_STATUS
EFIAPI
UsbVirtualHcAsyncIsochronousTransfer (
IN USB_BUS_CONTROLLER_DEVICE *UsbBusDev,
IN UINT8 DeviceAddress,
IN UINT8 EndPointAddress,
IN UINT8 DeviceSpeed,
IN UINTN MaximumPacketLength,
IN UINT8 DataBuffersNumber,
IN OUT VOID *Data[EFI_USB_MAX_ISO_BUFFER_NUM],
IN UINTN DataLength,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Translator,
IN EFI_ASYNC_USB_TRANSFER_CALLBACK IsochronousCallBack,
IN VOID *Context
)
/*++
Routine Description:
Vitual interface to submits Async isochronous transfer to a target USB device
for both Hc2 and Hc protocol.
Arguments:
UsbBusDev - A pointer to bus controller of the device.
DeviceAddress - Represents the address of the target device on the USB,
which is assigned during USB enumeration.
EndPointAddress - End point address
DeviceSpeed - Indicates device speed.
MaximumPacketLength - Indicates the maximum packet size that the
default control transfer endpoint is capable of
sending or receiving.
DataBuffersNumber - Number of data buffers prepared for the transfer.
Data - Array of pointers to the buffers of data that will be transmitted
to USB device or received from USB device.
DataLength - Indicates the size, in bytes, of the data buffer
specified by Data.
Translator - A pointr to the transaction translator data.
IsochronousCallBack - When the transfer complete, the call back function will be called
Context - Pass to the call back function as parameter
Returns:
EFI_UNSUPPORTED
--*/
{
return EFI_UNSUPPORTED;
}
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