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/** @file
Copyright (c) 2004 - 2005, 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:
PxeDhcp4.c
Abstract:
**/
#include "PxeDhcp4.h"
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
//
// Prototypes
// Driver model protocol interface
//
EFI_STATUS
EFIAPI
PxeDhcp4DriverEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
);
EFI_STATUS
EFIAPI
PxeDhcp4DriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
EFI_STATUS
EFIAPI
PxeDhcp4DriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
EFI_STATUS
EFIAPI
PxeDhcp4DriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
);
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
//
// PXE DHCP Protocol Interface
//
EFI_DRIVER_BINDING_PROTOCOL gPxeDhcp4DriverBinding = {
PxeDhcp4DriverBindingSupported,
PxeDhcp4DriverBindingStart,
PxeDhcp4DriverBindingStop,
0xa,
NULL,
NULL
};
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
//
// PxeDhcp4 Driver Entry point funtion
//
/**
Register Driver Binding protocol for this driver.
@param entry EFI_IMAGE_ENTRY_POINT)
@retval EFI_SUCCESS Driver loaded.
@retval other Driver not loaded.
**/
EFI_STATUS
EFIAPI
PxeDhcp4DriverEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
return EfiLibInstallAllDriverProtocols (
ImageHandle,
SystemTable,
&gPxeDhcp4DriverBinding,
NULL,
COMPONENT_NAME,
NULL,
NULL
);
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/**
Test to see if this driver supports ControllerHandle. Any
ControllerHandle that contains a PxeBaseCode protocol can be
supported.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to test.
@param RemainingDevicePath Not used.
@retval EFI_SUCCESS This driver supports this device.
@retval EFI_ALREADY_STARTED This driver is already running on this device.
@retval other This driver does not support this device.
**/
EFI_STATUS
EFIAPI
PxeDhcp4DriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL * This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL
)
{
EFI_STATUS Status;
EFI_PXE_BASE_CODE_PROTOCOL *PxeBc;
//
// Open the IO Abstraction(s) needed to perform the supported test.
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiPxeBaseCodeProtocolGuid,
(VOID **) &PxeBc,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Close the I/O Abstraction(s) used to perform the supported test.
//
return gBS->CloseProtocol (
ControllerHandle,
&gEfiPxeBaseCodeProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/**
Start this driver on ControllerHandle by opening a PxeBaseCode
protocol and installing a PxeDhcp4 protocol on ControllerHandle.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to bind driver to.
@param RemainingDevicePath Not used, always produce all possible children.
@retval EFI_SUCCESS This driver is added to ControllerHandle.
@retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle.
@retval other This driver does not support this device.
**/
EFI_STATUS
EFIAPI
PxeDhcp4DriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL * This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL
)
{
EFI_STATUS Status;
EFI_PXE_BASE_CODE_PROTOCOL *PxeBc;
EFI_SIMPLE_NETWORK_PROTOCOL *Snp;
PXE_DHCP4_PRIVATE_DATA *Private;
//
// Connect to the PxeBaseCode interface on ControllerHandle.
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiPxeBaseCodeProtocolGuid,
(VOID **) &PxeBc,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// BaseCode has already grabbed the SimpleNetwork interface
// so just do a HandleProtocol() to get it.
//
Status = gBS->HandleProtocol (
ControllerHandle,
&gEfiSimpleNetworkProtocolGuid,
(VOID **) &Snp
);
if (EFI_ERROR (Status)) {
goto error_exit;
}
ASSERT (Snp);
//
// Initialize the PXE DHCP device instance.
//
Private = AllocateZeroPool (sizeof (PXE_DHCP4_PRIVATE_DATA));
if (Private == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto error_exit;
}
Private->Signature = PXE_DHCP4_PRIVATE_DATA_SIGNATURE;
Private->PxeBc = PxeBc;
Private->Snp = Snp;
Private->Handle = ControllerHandle;
Private->PxeDhcp4.Revision = EFI_PXE_DHCP4_PROTOCOL_REVISION;
Private->PxeDhcp4.Run = PxeDhcp4Run;
Private->PxeDhcp4.Setup = PxeDhcp4Setup;
Private->PxeDhcp4.Init = PxeDhcp4Init;
Private->PxeDhcp4.Select = PxeDhcp4Select;
Private->PxeDhcp4.Renew = PxeDhcp4Renew;
Private->PxeDhcp4.Rebind = PxeDhcp4Rebind;
Private->PxeDhcp4.Release = PxeDhcp4Release;
Private->PxeDhcp4.Data = NULL;
//
// Install protocol interfaces for the PXE DHCP device.
//
Status = gBS->InstallProtocolInterface (
&ControllerHandle,
&gEfiPxeDhcp4ProtocolGuid,
EFI_NATIVE_INTERFACE,
&Private->PxeDhcp4
);
if (!EFI_ERROR (Status)) {
return Status;
}
error_exit: ;
gBS->CloseProtocol (
ControllerHandle,
&gEfiPxeBaseCodeProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
return Status;
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/**
Stop this driver on ControllerHandle by removing PXE DHCP
protocol and closing the PXE Base Code protocol on
ControllerHandle.
@param This Protocol instance pointer.
@param ControllerHandle Handle of device to stop driver on.
@param NumberOfChildren Not used.
@param ChildHandleBuffer Not used.
@retval EFI_SUCCESS This driver is removed ControllerHandle.
@retval other This driver was not removed from this device.
**/
EFI_STATUS
EFIAPI
PxeDhcp4DriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
{
EFI_STATUS Status;
EFI_PXE_DHCP4_PROTOCOL *PxeDhcp4;
PXE_DHCP4_PRIVATE_DATA *Private;
//
// Get our context back.
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiPxeDhcp4ProtocolGuid,
(VOID **) &PxeDhcp4,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
Private = PXE_DHCP4_PRIVATE_DATA_FROM_THIS (PxeDhcp4);
//
// Release allocated resources
//
if (Private->PxeDhcp4.Data) {
FreePool (Private->PxeDhcp4.Data);
Private->PxeDhcp4.Data = NULL;
}
//
// Uninstall our protocol
//
Status = gBS->UninstallProtocolInterface (
ControllerHandle,
&gEfiPxeDhcp4ProtocolGuid,
&Private->PxeDhcp4
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Close any consumed protocols
//
Status = gBS->CloseProtocol (
ControllerHandle,
&gEfiPxeBaseCodeProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Release our private data
//
FreePool (Private);
return Status;
}
/* EOF - PxeDhcp4.c */
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