mirror of https://github.com/acidanthera/audk.git
343 lines
9.5 KiB
C
343 lines
9.5 KiB
C
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/*++
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Copyright (c) 2006, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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PxeDhcp4.c
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Abstract:
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--*/
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#include "PxeDhcp4.h"
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/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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//
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// Prototypes
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// Driver model protocol interface
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//
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EFI_STATUS
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EFIAPI
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PxeDhcp4DriverEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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);
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EFI_STATUS
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EFIAPI
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PxeDhcp4DriverBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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);
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EFI_STATUS
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EFIAPI
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PxeDhcp4DriverBindingStart (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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);
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EFI_STATUS
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EFIAPI
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PxeDhcp4DriverBindingStop (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN UINTN NumberOfChildren,
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IN EFI_HANDLE *ChildHandleBuffer
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);
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/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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//
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// PXE DHCP Protocol Interface
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//
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EFI_DRIVER_BINDING_PROTOCOL gPxeDhcp4DriverBinding = {
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PxeDhcp4DriverBindingSupported,
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PxeDhcp4DriverBindingStart,
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PxeDhcp4DriverBindingStop,
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0x10,
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NULL,
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NULL
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};
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/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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EFI_STATUS
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EFIAPI
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PxeDhcp4DriverBindingSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL * This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL
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)
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/*++
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Routine Description:
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Test to see if this driver supports ControllerHandle. Any
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ControllerHandle that contains a PxeBaseCode protocol can be
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supported.
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Arguments:
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This - Protocol instance pointer.
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ControllerHandle - Handle of device to test.
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RemainingDevicePath - Not used.
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Returns:
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EFI_SUCCESS - This driver supports this device.
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EFI_ALREADY_STARTED - This driver is already running on this
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device.
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other - This driver does not support this device.
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--*/
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{
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EFI_STATUS Status;
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EFI_PXE_BASE_CODE_PROTOCOL *PxeBc;
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//
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// Open the IO Abstraction(s) needed to perform the supported test.
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//
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Status = gBS->OpenProtocol (
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ControllerHandle,
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&gEfiPxeBaseCodeProtocolGuid,
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(VOID **) &PxeBc,
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This->DriverBindingHandle,
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ControllerHandle,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Close the I/O Abstraction(s) used to perform the supported test.
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//
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return gBS->CloseProtocol (
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ControllerHandle,
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&gEfiPxeBaseCodeProtocolGuid,
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This->DriverBindingHandle,
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ControllerHandle
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);
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}
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/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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EFI_STATUS
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EFIAPI
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PxeDhcp4DriverBindingStart (
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IN EFI_DRIVER_BINDING_PROTOCOL * This,
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IN EFI_HANDLE ControllerHandle,
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IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL
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)
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/*++
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Routine Description:
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Start this driver on ControllerHandle by opening a PxeBaseCode
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protocol and installing a PxeDhcp4 protocol on ControllerHandle.
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Arguments:
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This - Protocol instance pointer.
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ControllerHandle - Handle of device to bind driver to.
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RemainingDevicePath - Not used, always produce all possible
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children.
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Returns:
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EFI_SUCCESS - This driver is added to ControllerHandle.
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EFI_ALREADY_STARTED - This driver is already running on
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ControllerHandle.
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other - This driver does not support this device.
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--*/
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{
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EFI_STATUS Status;
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EFI_PXE_BASE_CODE_PROTOCOL *PxeBc;
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EFI_SIMPLE_NETWORK_PROTOCOL *Snp;
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PXE_DHCP4_PRIVATE_DATA *Private;
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//
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// Connect to the PxeBaseCode interface on ControllerHandle.
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//
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Status = gBS->OpenProtocol (
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ControllerHandle,
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&gEfiPxeBaseCodeProtocolGuid,
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(VOID **) &PxeBc,
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This->DriverBindingHandle,
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ControllerHandle,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// BaseCode has already grabbed the SimpleNetwork interface
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// so just do a HandleProtocol() to get it.
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//
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Status = gBS->HandleProtocol (
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ControllerHandle,
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&gEfiSimpleNetworkProtocolGuid,
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(VOID **) &Snp
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);
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if (EFI_ERROR (Status)) {
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goto error_exit;
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}
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ASSERT (Snp);
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//
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// Initialize the PXE DHCP device instance.
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//
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Status = gBS->AllocatePool (
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EfiBootServicesData,
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sizeof (PXE_DHCP4_PRIVATE_DATA),
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(VOID **) &Private
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);
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if (EFI_ERROR (Status)) {
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goto error_exit;
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}
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//
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//
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//
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ZeroMem (Private, sizeof (PXE_DHCP4_PRIVATE_DATA));
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Private->Signature = PXE_DHCP4_PRIVATE_DATA_SIGNATURE;
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Private->PxeBc = PxeBc;
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Private->Snp = Snp;
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Private->Handle = ControllerHandle;
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Private->PxeDhcp4.Revision = EFI_PXE_DHCP4_PROTOCOL_REVISION;
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Private->PxeDhcp4.Run = PxeDhcp4Run;
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Private->PxeDhcp4.Setup = PxeDhcp4Setup;
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Private->PxeDhcp4.Init = PxeDhcp4Init;
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Private->PxeDhcp4.Select = PxeDhcp4Select;
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Private->PxeDhcp4.Renew = PxeDhcp4Renew;
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Private->PxeDhcp4.Rebind = PxeDhcp4Rebind;
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Private->PxeDhcp4.Release = PxeDhcp4Release;
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Private->PxeDhcp4.Data = NULL;
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//
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// Install protocol interfaces for the PXE DHCP device.
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//
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Status = gBS->InstallProtocolInterface (
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&ControllerHandle,
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&gEfiPxeDhcp4ProtocolGuid,
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EFI_NATIVE_INTERFACE,
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&Private->PxeDhcp4
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);
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if (!EFI_ERROR (Status)) {
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return Status;
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}
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error_exit: ;
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gBS->CloseProtocol (
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ControllerHandle,
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&gEfiPxeBaseCodeProtocolGuid,
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This->DriverBindingHandle,
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ControllerHandle
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);
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return Status;
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}
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/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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EFI_STATUS
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EFIAPI
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PxeDhcp4DriverBindingStop (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ControllerHandle,
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IN UINTN NumberOfChildren,
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IN EFI_HANDLE *ChildHandleBuffer
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)
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/*++
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Routine Description:
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Stop this driver on ControllerHandle by removing PXE DHCP
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protocol and closing the PXE Base Code protocol on
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ControllerHandle.
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Arguments:
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This - Protocol instance pointer.
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ControllerHandle - Handle of device to stop driver on.
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NumberOfChildren - Not used.
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ChildHandleBuffer - Not used.
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Returns:
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EFI_SUCCESS - This driver is removed ControllerHandle.
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other - This driver was not removed from this
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device.
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--*/
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{
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EFI_STATUS Status;
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EFI_PXE_DHCP4_PROTOCOL *PxeDhcp4;
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PXE_DHCP4_PRIVATE_DATA *Private;
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//
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// Get our context back.
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//
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Status = gBS->OpenProtocol (
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ControllerHandle,
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&gEfiPxeDhcp4ProtocolGuid,
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(VOID **) &PxeDhcp4,
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This->DriverBindingHandle,
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ControllerHandle,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL
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);
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if (EFI_ERROR (Status)) {
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return EFI_UNSUPPORTED;
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}
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Private = PXE_DHCP4_PRIVATE_DATA_FROM_THIS (PxeDhcp4);
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//
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// Release allocated resources
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//
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if (Private->PxeDhcp4.Data) {
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gBS->FreePool (Private->PxeDhcp4.Data);
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Private->PxeDhcp4.Data = NULL;
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}
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//
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// Uninstall our protocol
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//
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Status = gBS->UninstallProtocolInterface (
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ControllerHandle,
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&gEfiPxeDhcp4ProtocolGuid,
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&Private->PxeDhcp4
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Close any consumed protocols
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//
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Status = gBS->CloseProtocol (
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ControllerHandle,
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&gEfiPxeBaseCodeProtocolGuid,
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This->DriverBindingHandle,
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ControllerHandle
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Release our private data
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//
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gBS->FreePool (Private);
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return Status;
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}
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/* EOF - PxeDhcp4.c */
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