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audk/MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Driver.c

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/** @file
Copyright (c) 2006 - 2007, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
Mtftp4Driver.c
Abstract:
**/
#include "Mtftp4Impl.h"
EFI_DRIVER_BINDING_PROTOCOL gMtftp4DriverBinding = {
Mtftp4DriverBindingSupported,
Mtftp4DriverBindingStart,
Mtftp4DriverBindingStop,
0xa,
NULL,
NULL
};
EFI_SERVICE_BINDING_PROTOCOL gMtftp4ServiceBindingTemplete = {
Mtftp4ServiceBindingCreateChild,
Mtftp4ServiceBindingDestroyChild
};
EFI_STATUS
EFIAPI
Mtftp4DriverEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
The driver entry point which installs multiple protocols to the ImageHandle.
Arguments:
ImageHandle - The MTFTP's image handle
SystemTable - The system table
Returns:
EFI_SUCCESS - The handles are successfully installed on the image. Otherwise
some EFI_ERROR.
--*/
{
return EfiLibInstallDriverBindingComponentName2 (
ImageHandle,
SystemTable,
&gMtftp4DriverBinding,
ImageHandle,
&gMtftp4ComponentName,
&gMtftp4ComponentName2
);
}
/**
Test whether MTFTP driver support this controller.
@param This The MTFTP driver binding instance
@param Controller The controller to test
@param RemainingDevicePath The remaining device path
@retval EFI_SUCCESS The controller has UDP service binding protocol
installed, MTFTP can support it.
@retval Others MTFTP can't support the controller.
**/
EFI_STATUS
Mtftp4DriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
Status = gBS->OpenProtocol (
Controller,
&gEfiUdp4ServiceBindingProtocolGuid,
NULL,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_TEST_PROTOCOL
);
return Status;
}
/**
Config a NULL UDP that is used to keep the connection between UDP
and MTFTP. Just leave the Udp child unconfigured. When UDP is
unloaded, MTFTP will be informed with DriverBinding Stop.
@param UdpIo The UDP port to configure
@param Context The opaque parameter to the callback
@retval EFI_SUCCESS It always return EFI_SUCCESS directly.
**/
EFI_STATUS
Mtftp4ConfigNullUdp (
IN UDP_IO_PORT *UdpIo,
IN VOID *Context
)
{
return EFI_SUCCESS;
}
/**
Create then initialize a MTFTP service binding instance.
@param Controller The controller to install the MTFTP service
binding on
@param Image The driver binding image of the MTFTP driver
@param Service The variable to receive the created service
binding instance.
@retval EFI_OUT_OF_RESOURCES Failed to allocate resource to create the instance
@retval EFI_DEVICE_ERROR Failed to create a NULL UDP port to keep
connection with UDP.
@retval EFI_SUCCESS The service instance is created for the
controller.
**/
EFI_STATUS
Mtftp4CreateService (
IN EFI_HANDLE Controller,
IN EFI_HANDLE Image,
OUT MTFTP4_SERVICE **Service
)
{
MTFTP4_SERVICE *MtftpSb;
EFI_STATUS Status;
*Service = NULL;
MtftpSb = AllocatePool (sizeof (MTFTP4_SERVICE));
if (MtftpSb == NULL) {
return EFI_OUT_OF_RESOURCES;
}
MtftpSb->Signature = MTFTP4_SERVICE_SIGNATURE;
MtftpSb->ServiceBinding = gMtftp4ServiceBindingTemplete;
MtftpSb->InDestory = FALSE;
MtftpSb->ChildrenNum = 0;
InitializeListHead (&MtftpSb->Children);
MtftpSb->Timer = NULL;
MtftpSb->TimerToGetMap = NULL;
MtftpSb->Controller = Controller;
MtftpSb->Image = Image;
MtftpSb->ConnectUdp = NULL;
//
// Create the timer and a udp to be notified when UDP is uninstalled
//
Status = gBS->CreateEvent (
EVT_NOTIFY_SIGNAL | EVT_TIMER,
TPL_CALLBACK,
Mtftp4OnTimerTick,
MtftpSb,
&MtftpSb->Timer
);
if (EFI_ERROR (Status)) {
gBS->FreePool (MtftpSb);
return Status;
}
//
// Create the timer used to time out the procedure which is used to
// get the default IP address.
//
Status = gBS->CreateEvent (
EVT_TIMER,
TPL_CALLBACK,
NULL,
NULL,
&MtftpSb->TimerToGetMap
);
if (EFI_ERROR (Status)) {
gBS->CloseEvent (MtftpSb->Timer);
gBS->FreePool (MtftpSb);
return Status;
}
MtftpSb->ConnectUdp = UdpIoCreatePort (Controller, Image, Mtftp4ConfigNullUdp, NULL);
if (MtftpSb->ConnectUdp == NULL) {
gBS->CloseEvent (MtftpSb->TimerToGetMap);
gBS->CloseEvent (MtftpSb->Timer);
gBS->FreePool (MtftpSb);
return EFI_DEVICE_ERROR;
}
*Service = MtftpSb;
return EFI_SUCCESS;
}
/**
Release all the resource used the MTFTP service binding instance.
@param MtftpSb The MTFTP service binding instance.
@return None
**/
VOID
Mtftp4CleanService (
IN MTFTP4_SERVICE *MtftpSb
)
{
UdpIoFreePort (MtftpSb->ConnectUdp);
gBS->CloseEvent (MtftpSb->TimerToGetMap);
gBS->CloseEvent (MtftpSb->Timer);
}
/**
Start the MTFTP driver on this controller. MTFTP driver will
install a MTFTP SERVICE BINDING protocol on the supported
controller, which can be used to create/destroy MTFTP children.
@param This The MTFTP driver binding protocol.
@param Controller The controller to manage.
@param RemainingDevicePath Remaining device path.
@retval EFI_ALREADY_STARTED The MTFTP service binding protocol has been
started on the controller.
@retval EFI_SUCCESS The MTFTP service binding is installed on the
controller.
**/
EFI_STATUS
Mtftp4DriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
MTFTP4_SERVICE *MtftpSb;
EFI_STATUS Status;
//
// Directly return if driver is already running.
//
Status = gBS->OpenProtocol (
Controller,
&gEfiMtftp4ServiceBindingProtocolGuid,
NULL,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_TEST_PROTOCOL
);
if (Status == EFI_SUCCESS) {
return EFI_ALREADY_STARTED;
}
Status = Mtftp4CreateService (Controller, This->DriverBindingHandle, &MtftpSb);
if (EFI_ERROR (Status)) {
return Status;
}
Status = gBS->SetTimer (MtftpSb->Timer, TimerPeriodic, TICKS_PER_SECOND);
if (EFI_ERROR (Status)) {
goto ON_ERROR;
}
//
// Install the Mtftp4ServiceBinding Protocol onto Controller
//
Status = gBS->InstallMultipleProtocolInterfaces (
&Controller,
&gEfiMtftp4ServiceBindingProtocolGuid,
&MtftpSb->ServiceBinding,
NULL
);
if (EFI_ERROR (Status)) {
goto ON_ERROR;
}
return EFI_SUCCESS;
ON_ERROR:
Mtftp4CleanService (MtftpSb);
gBS->FreePool (MtftpSb);
return Status;
}
/**
Stop the MTFTP driver on controller. The controller is a UDP
child handle.
@param This The MTFTP driver binding protocol
@param Controller The controller to stop
@param NumberOfChildren The number of children
@param ChildHandleBuffer The array of the child handle.
@retval EFI_SUCCESS The driver is stopped on the controller.
@retval EFI_DEVICE_ERROR Failed to stop the driver on the controller.
**/
EFI_STATUS
Mtftp4DriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
{
EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;
MTFTP4_SERVICE *MtftpSb;
MTFTP4_PROTOCOL *Instance;
EFI_HANDLE NicHandle;
EFI_STATUS Status;
EFI_TPL OldTpl;
//
// MTFTP driver opens UDP child, So, Controller is a UDP
// child handle. Locate the Nic handle first. Then get the
// MTFTP private data back.
//
NicHandle = NetLibGetNicHandle (Controller, &gEfiUdp4ProtocolGuid);
if (NicHandle == NULL) {
return EFI_DEVICE_ERROR;
}
Status = gBS->OpenProtocol (
NicHandle,
&gEfiMtftp4ServiceBindingProtocolGuid,
(VOID **) &ServiceBinding,
This->DriverBindingHandle,
NicHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
MtftpSb = MTFTP4_SERVICE_FROM_THIS (ServiceBinding);
if (MtftpSb->InDestory) {
return EFI_SUCCESS;
}
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
if (NumberOfChildren == 0) {
MtftpSb->InDestory = TRUE;
gBS->UninstallProtocolInterface (
NicHandle,
&gEfiMtftp4ServiceBindingProtocolGuid,
ServiceBinding
);
Mtftp4CleanService (MtftpSb);
gBS->FreePool (MtftpSb);
} else {
while (!IsListEmpty (&MtftpSb->Children)) {
Instance = NET_LIST_HEAD (&MtftpSb->Children, MTFTP4_PROTOCOL, Link);
Mtftp4ServiceBindingDestroyChild (ServiceBinding, Instance->Handle);
}
if (MtftpSb->ChildrenNum != 0) {
Status = EFI_DEVICE_ERROR;
}
}
gBS->RestoreTPL (OldTpl);
return Status;
}
/**
Initialize a MTFTP protocol instance which is the child of MtftpSb.
@param MtftpSb The MTFTP service binding protocol.
@param Instance The MTFTP instance to initialize.
@return None
**/
VOID
Mtftp4InitProtocol (
IN MTFTP4_SERVICE *MtftpSb,
IN MTFTP4_PROTOCOL *Instance
)
{
ZeroMem (Instance, sizeof (MTFTP4_PROTOCOL));
Instance->Signature = MTFTP4_PROTOCOL_SIGNATURE;
InitializeListHead (&Instance->Link);
CopyMem (&Instance->Mtftp4, &gMtftp4ProtocolTemplate, sizeof (Instance->Mtftp4));
Instance->State = MTFTP4_STATE_UNCONFIGED;
Instance->Indestory = FALSE;
Instance->Service = MtftpSb;
InitializeListHead (&Instance->Blocks);
}
/**
Create a MTFTP child for the service binding instance, then
install the MTFTP protocol to the ChildHandle.
@param This The MTFTP service binding instance.
@param ChildHandle The Child handle to install the MTFTP protocol.
@retval EFI_INVALID_PARAMETER The parameter is invalid.
@retval EFI_OUT_OF_RESOURCES Failed to allocate resource for the new child.
@retval EFI_SUCCESS The child is successfully create.
**/
EFI_STATUS
Mtftp4ServiceBindingCreateChild (
IN EFI_SERVICE_BINDING_PROTOCOL *This,
IN OUT EFI_HANDLE *ChildHandle
)
{
MTFTP4_SERVICE *MtftpSb;
MTFTP4_PROTOCOL *Instance;
EFI_STATUS Status;
EFI_TPL OldTpl;
VOID *Udp4;
if ((This == NULL) || (ChildHandle == NULL)) {
return EFI_INVALID_PARAMETER;
}
Instance = AllocatePool (sizeof (*Instance));
if (Instance == NULL) {
return EFI_OUT_OF_RESOURCES;
}
MtftpSb = MTFTP4_SERVICE_FROM_THIS (This);
Mtftp4InitProtocol (MtftpSb, Instance);
Instance->UnicastPort = UdpIoCreatePort (
MtftpSb->Controller,
MtftpSb->Image,
Mtftp4ConfigNullUdp,
Instance
);
if (Instance->UnicastPort == NULL) {
gBS->FreePool (Instance);
return EFI_OUT_OF_RESOURCES;
}
//
// Install the MTFTP protocol onto ChildHandle
//
Status = gBS->InstallMultipleProtocolInterfaces (
ChildHandle,
&gEfiMtftp4ProtocolGuid,
&Instance->Mtftp4,
NULL
);
if (EFI_ERROR (Status)) {
goto ON_ERROR;
}
Instance->Handle = *ChildHandle;
//
// Open the Udp4 protocol BY_CHILD.
//
Status = gBS->OpenProtocol (
MtftpSb->ConnectUdp->UdpHandle,
&gEfiUdp4ProtocolGuid,
(VOID **) &Udp4,
gMtftp4DriverBinding.DriverBindingHandle,
Instance->Handle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
if (EFI_ERROR (Status)) {
gBS->UninstallMultipleProtocolInterfaces (
Instance->Handle,
&gEfiMtftp4ProtocolGuid,
&Instance->Mtftp4,
NULL
);
goto ON_ERROR;
}
//
// Add it to the parent's child list.
//
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
InsertTailList (&MtftpSb->Children, &Instance->Link);
MtftpSb->ChildrenNum++;
gBS->RestoreTPL (OldTpl);
ON_ERROR:
if (EFI_ERROR (Status)) {
UdpIoFreePort (Instance->UnicastPort);
gBS->FreePool (Instance);
}
return Status;
}
/**
Destory one of the service binding's child.
@param This The service binding instance
@param ChildHandle The child handle to destory
@retval EFI_INVALID_PARAMETER The parameter is invaid.
@retval EFI_UNSUPPORTED The child may have already been destoried.
@retval EFI_SUCCESS The child is destoried and removed from the
parent's child list.
**/
EFI_STATUS
Mtftp4ServiceBindingDestroyChild (
IN EFI_SERVICE_BINDING_PROTOCOL *This,
IN EFI_HANDLE ChildHandle
)
{
MTFTP4_SERVICE *MtftpSb;
MTFTP4_PROTOCOL *Instance;
EFI_MTFTP4_PROTOCOL *Mtftp4;
EFI_STATUS Status;
EFI_TPL OldTpl;
if ((This == NULL) || (ChildHandle == NULL)) {
return EFI_INVALID_PARAMETER;
}
//
// Retrieve the private context data structures
//
Status = gBS->OpenProtocol (
ChildHandle,
&gEfiMtftp4ProtocolGuid,
(VOID **) &Mtftp4,
gMtftp4DriverBinding.DriverBindingHandle,
ChildHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
Instance = MTFTP4_PROTOCOL_FROM_THIS (Mtftp4);
MtftpSb = MTFTP4_SERVICE_FROM_THIS (This);
if (Instance->Service != MtftpSb) {
return EFI_INVALID_PARAMETER;
}
if (Instance->Indestory) {
return EFI_SUCCESS;
}
Instance->Indestory = TRUE;
//
// Close the Udp4 protocol.
//
gBS->CloseProtocol (
MtftpSb->ConnectUdp->UdpHandle,
&gEfiUdp4ProtocolGuid,
gMtftp4DriverBinding.DriverBindingHandle,
ChildHandle
);
//
// Uninstall the MTFTP4 protocol first to enable a top down destruction.
//
Status = gBS->UninstallProtocolInterface (
ChildHandle,
&gEfiMtftp4ProtocolGuid,
Mtftp4
);
if (EFI_ERROR (Status)) {
Instance->Indestory = FALSE;
return Status;
}
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
Mtftp4CleanOperation (Instance, EFI_DEVICE_ERROR);
UdpIoFreePort (Instance->UnicastPort);
RemoveEntryList (&Instance->Link);
MtftpSb->ChildrenNum--;
gBS->RestoreTPL (OldTpl);
gBS->FreePool (Instance);
return EFI_SUCCESS;
}
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