/**
Unregisters a Nvm Express device namespace.
This function removes the protocols installed on the controller handle and
frees the resources allocated for the namespace.
@param This The pointer to EFI_DRIVER_BINDING_PROTOCOL instance.
@param Controller The controller handle of the namespace.
@param Handle The child handle.
@retval EFI_SUCCESS The namespace is successfully unregistered.
@return Others Some error occurs when unregistering the namespace.
**/
EFI_STATUS
UnregisterNvmeNamespace (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_HANDLE Handle
)
{
EFI_STATUS Status;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
NVME_DEVICE_PRIVATE_DATA *Device;
EFI_STORAGE_SECURITY_COMMAND_PROTOCOL *StorageSecurity;
BOOLEAN IsEmpty;
EFI_TPL OldTpl;
VOID *DummyInterface;
BlockIo = NULL;
Status = gBS->OpenProtocol (
Handle,
&gEfiBlockIoProtocolGuid,
(VOID **) &BlockIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return Status;
}
Device = NVME_DEVICE_PRIVATE_DATA_FROM_BLOCK_IO (BlockIo);
//
// Wait for the device's asynchronous I/O queue to become empty.
//
while (TRUE) {
OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
IsEmpty = IsListEmpty (&Device->AsyncQueue);
gBS->RestoreTPL (OldTpl);
if (IsEmpty) {
break;
}
gBS->Stall (100);
}
//
// Close the child handle
//
gBS->CloseProtocol (
Controller,
&gEfiNvmExpressPassThruProtocolGuid,
This->DriverBindingHandle,
Handle
);
//
// The Nvm Express driver installs the BlockIo and DiskInfo in the DriverBindingStart().
// Here should uninstall both of them.
//
Status = gBS->UninstallMultipleProtocolInterfaces (
Handle,
&gEfiDevicePathProtocolGuid,
Device->DevicePath,
&gEfiBlockIoProtocolGuid,
&Device->BlockIo,
&gEfiBlockIo2ProtocolGuid,
&Device->BlockIo2,
&gEfiDiskInfoProtocolGuid,
&Device->DiskInfo,
NULL
);
if (EFI_ERROR (Status)) {
gBS->OpenProtocol (
Controller,
&gEfiNvmExpressPassThruProtocolGuid,
(VOID **) &DummyInterface,
This->DriverBindingHandle,
Handle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
return Status;
}
//
// If Storage Security Command Protocol is installed, then uninstall this protocol.
//
Status = gBS->OpenProtocol (
Handle,
&gEfiStorageSecurityCommandProtocolGuid,
(VOID **) &StorageSecurity,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (!EFI_ERROR (Status)) {
Status = gBS->UninstallProtocolInterface (
Handle,
&gEfiStorageSecurityCommandProtocolGuid,
&Device->StorageSecurity
);
if (EFI_ERROR (Status)) {
gBS->OpenProtocol (
Controller,
&gEfiNvmExpressPassThruProtocolGuid,
(VOID **) &DummyInterface,
This->DriverBindingHandle,
Handle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
return Status;
}
}
if(Device->DevicePath != NULL) {
FreePool (Device->DevicePath);
}
if (Device->ControllerNameTable != NULL) {
FreeUnicodeStringTable (Device->ControllerNameTable);
}
FreePool (Device);
return EFI_SUCCESS;
}
/**
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 This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
EFI_COMPONENT_NAME_PROTOCOL instance.
@param ControllerHandle[in] 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 ChildHandle[in] 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 Language[in] 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 ControllerName[out] 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 NULL.
@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
NvmExpressComponentNameGetControllerName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE ChildHandle OPTIONAL,
IN CHAR8 *Language,
OUT CHAR16 **ControllerName
)
{
EFI_STATUS Status;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
NVME_DEVICE_PRIVATE_DATA *Device;
EFI_UNICODE_STRING_TABLE *ControllerNameTable;
//
// Make sure this driver is currently managing ControllHandle
//
Status = EfiTestManagedDevice (
ControllerHandle,
gNvmExpressDriverBinding.DriverBindingHandle,
&gEfiPciIoProtocolGuid
);
if (EFI_ERROR (Status)) {
return Status;
}
ControllerNameTable = mNvmExpressControllerNameTable;
if (ChildHandle != NULL) {
Status = EfiTestChildHandle (
ControllerHandle,
ChildHandle,
&gEfiPciIoProtocolGuid
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Get the child context
//
Status = gBS->OpenProtocol (
ChildHandle,
&gEfiBlockIoProtocolGuid,
(VOID **) &BlockIo,
gNvmExpressDriverBinding.DriverBindingHandle,
ChildHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
Device = NVME_DEVICE_PRIVATE_DATA_FROM_BLOCK_IO (BlockIo);
ControllerNameTable = Device->ControllerNameTable;
}
return LookupUnicodeString2 (
Language,
This->SupportedLanguages,
ControllerNameTable,
ControllerName,
(BOOLEAN)(This == &gNvmExpressComponentName)
);
}
