| /*++ | |
| 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: | |
| 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, | |
| 0x10, | |
| NULL, | |
| NULL | |
| }; | |
| /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ | |
| EFI_STATUS | |
| EFIAPI | |
| PxeDhcp4DriverBindingSupported ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL * This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL | |
| ) | |
| /*++ | |
| Routine Description: | |
| Test to see if this driver supports ControllerHandle. Any | |
| ControllerHandle that contains a PxeBaseCode protocol can be | |
| supported. | |
| Arguments: | |
| This - Protocol instance pointer. | |
| ControllerHandle - Handle of device to test. | |
| RemainingDevicePath - Not used. | |
| Returns: | |
| EFI_SUCCESS - This driver supports this device. | |
| EFI_ALREADY_STARTED - This driver is already running on this | |
| device. | |
| other - This driver does not support this device. | |
| --*/ | |
| { | |
| 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 | |
| ); | |
| } | |
| /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ | |
| EFI_STATUS | |
| EFIAPI | |
| PxeDhcp4DriverBindingStart ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL * This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL | |
| ) | |
| /*++ | |
| Routine Description: | |
| Start this driver on ControllerHandle by opening a PxeBaseCode | |
| protocol and installing a PxeDhcp4 protocol on ControllerHandle. | |
| Arguments: | |
| This - Protocol instance pointer. | |
| ControllerHandle - Handle of device to bind driver to. | |
| RemainingDevicePath - Not used, always produce all possible | |
| children. | |
| Returns: | |
| EFI_SUCCESS - This driver is added to ControllerHandle. | |
| EFI_ALREADY_STARTED - This driver is already running on | |
| ControllerHandle. | |
| other - This driver does not support this device. | |
| --*/ | |
| { | |
| 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. | |
| // | |
| Status = gBS->AllocatePool ( | |
| EfiBootServicesData, | |
| sizeof (PXE_DHCP4_PRIVATE_DATA), | |
| (VOID **) &Private | |
| ); | |
| if (EFI_ERROR (Status)) { | |
| goto error_exit; | |
| } | |
| // | |
| // | |
| // | |
| ZeroMem (Private, sizeof (PXE_DHCP4_PRIVATE_DATA)); | |
| 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; | |
| } | |
| /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ | |
| EFI_STATUS | |
| EFIAPI | |
| PxeDhcp4DriverBindingStop ( | |
| IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
| IN EFI_HANDLE ControllerHandle, | |
| IN UINTN NumberOfChildren, | |
| IN EFI_HANDLE *ChildHandleBuffer | |
| ) | |
| /*++ | |
| Routine Description: | |
| Stop this driver on ControllerHandle by removing PXE DHCP | |
| protocol and closing the PXE Base Code protocol on | |
| ControllerHandle. | |
| Arguments: | |
| This - Protocol instance pointer. | |
| ControllerHandle - Handle of device to stop driver on. | |
| NumberOfChildren - Not used. | |
| ChildHandleBuffer - Not used. | |
| Returns: | |
| EFI_SUCCESS - This driver is removed ControllerHandle. | |
| other - This driver was not removed from this | |
| device. | |
| --*/ | |
| { | |
| 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) { | |
| gBS->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 | |
| // | |
| gBS->FreePool (Private); | |
| return Status; | |
| } | |
| /* EOF - PxeDhcp4.c */ |