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mirror_edk2/MdeModulePkg/Universal/Network/ArpDxe/ArpDriver.h
niruiyu 284ee2e829 Fix the comments to follow UEFI Spec regarding how to check an EFI_HANDLE is valid/invalid. 
Signed-off-by: niruiyu
Reviewed-by: lgao4

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11987 6f19259b-4bc3-4df7-8a09-765794883524
2011-07-06 03:55:36 +00:00

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/** @file
ARP driver header file.
Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
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<BR>
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.
**/
#ifndef _ARP_DRIVER_H_
#define _ARP_DRIVER_H_
#include <Uefi.h>
#include <Protocol/Arp.h>
#include <Protocol/ManagedNetwork.h>
#include <Protocol/ServiceBinding.h>
#include <Library/DebugLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
//
// Global variables
//
extern EFI_DRIVER_BINDING_PROTOCOL gArpDriverBinding;
extern EFI_COMPONENT_NAME_PROTOCOL gArpComponentName;
extern EFI_COMPONENT_NAME2_PROTOCOL gArpComponentName2;
//
// Function prototypes for the Drivr Binding Protocol
//
/**
Tests to see if this driver supports a given controller.
If a child device is provided, it further tests to see if this driver supports
creating a handle for the specified child device.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] ControllerHandle The handle of the controller to test. This handle
must support a protocol interface that supplies
an I/O abstraction to the driver.
@param[in] RemainingDevicePath A pointer to the remaining portion of a device path.
This parameter is ignored by device drivers,
and is optional for bus drivers.
@retval EFI_SUCCESS The device specified by ControllerHandle and
RemainingDevicePath is supported by the driver
specified by This.
@retval EFI_ALREADY_STARTED The device specified by ControllerHandle and
RemainingDevicePath is already being managed
by the driver specified by This.
@retval EFI_ACCESS_DENIED The device specified by ControllerHandle and
RemainingDevicePath is already being managed by
a different driver or an application that
requires exclusive acces. Currently not implemented.
@retval EFI_UNSUPPORTED The device specified by ControllerHandle and
RemainingDevicePath is not supported by the
driver specified by This.
**/
EFI_STATUS
EFIAPI
ArpDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
);
/**
Start this driver on ControllerHandle.
The Start() function is designed to be invoked from the EFI boot service ConnectController().
As a result, much of the error checking on the parameters to Start() has been
moved into this common boot service. It is legal to call Start() from other locations,
but the following calling restrictions must be followed or the system behavior
will not be deterministic.
1. ControllerHandle must be a valid EFI_HANDLE.
2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally
aligned EFI_DEVICE_PATH_PROTOCOL.
3. Prior to calling Start(), the Supported() function for the driver specified
by This must have been called with the same calling parameters, and Supported()
must have returned EFI_SUCCESS.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] ControllerHandle The handle of the controller to start. This handle
must support a protocol interface that supplies
an I/O abstraction to the driver.
@param[in] RemainingDevicePath A pointer to the remaining portion of a device path.
This parameter is ignored by device drivers,
and is optional for bus drivers.
@retval EFI_SUCCESS The device was started.
@retval EFI_DEVICE_ERROR The device could not be started due to a device error.
Currently not implemented.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of
resources.
@retval Others The driver failded to start the device.
**/
EFI_STATUS
EFIAPI
ArpDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
);
/**
Stop this driver on ControllerHandle.
Release the control of this controller and remove the IScsi functions. The Stop()
function is designed to be invoked from the EFI boot service DisconnectController().
As a result, much of the error checking on the parameters to Stop() has been moved
into this common boot service. It is legal to call Stop() from other locations,
but the following calling restrictions must be followed or the system behavior
will not be deterministic.
1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this
same driver's Start() function.
2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid
EFI_HANDLE. In addition, all of these handles must have been created in this driver's
Start() function, and the Start() function must have called OpenProtocol() on
ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] ControllerHandle A handle to the device being stopped. The handle must
support a bus specific I/O protocol for the driver
to use to stop the device.
@param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.
Not used.
@param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL
if NumberOfChildren is 0.Not used.
@retval EFI_SUCCESS The device was stopped.
@retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
**/
EFI_STATUS
EFIAPI
ArpDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
);
/**
Creates a child handle and installs a protocol.
The CreateChild() function installs a protocol on ChildHandle.
If ChildHandle is a pointer to NULL, then a new handle is created and returned
in ChildHandle. If ChildHandle is not a pointer to NULL, then the protocol
installs on the existing ChildHandle.
@param This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.
@param ChildHandle Pointer to the handle of the child to create. If it is NULL,
then a new handle is created. If it is a pointer to an existing
UEFI handle, then the protocol is added to the existing UEFI handle.
@retval EFI_SUCCES The protocol was added to ChildHandle.
@retval EFI_INVALID_PARAMETER ChildHandle is NULL.
@retval EFI_OUT_OF_RESOURCES There are not enough resources availabe to create
the child
@retval other The child handle was not created
**/
EFI_STATUS
EFIAPI
ArpServiceBindingCreateChild (
IN EFI_SERVICE_BINDING_PROTOCOL *This,
IN EFI_HANDLE *ChildHandle
);
/**
Destroys a child handle with a protocol installed on it.
The DestroyChild() function does the opposite of CreateChild(). It removes a protocol
that was installed by CreateChild() from ChildHandle. If the removed protocol is the
last protocol on ChildHandle, then ChildHandle is destroyed.
@param This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.
@param ChildHandle Handle of the child to destroy
@retval EFI_SUCCES The protocol was removed from ChildHandle.
@retval EFI_UNSUPPORTED ChildHandle does not support the protocol that is
being removed.
@retval EFI_INVALID_PARAMETER Child handle is NULL.
@retval EFI_ACCESS_DENIED The protocol could not be removed from the ChildHandle
because its services are being used.
@retval other The child handle was not destroyed
**/
EFI_STATUS
EFIAPI
ArpServiceBindingDestroyChild (
IN EFI_SERVICE_BINDING_PROTOCOL *This,
IN EFI_HANDLE ChildHandle
);
//
// EFI Component Name Functions
//
/**
Retrieves a Unicode string that is the user readable name of the driver.
This function retrieves the user readable name of a driver 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 driver name is
returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
by This does not support the language specified by Language,
then EFI_UNSUPPORTED is returned.
@param[in] This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
EFI_COMPONENT_NAME_PROTOCOL instance.
@param[in] Language 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[out] DriverName A pointer to the Unicode string to return.
This Unicode string is the name of the
driver specified by This in the language
specified by Language.
@retval EFI_SUCCESS The Unicode string for the Driver specified by
This and the language specified by Language was
returned in DriverName.
@retval EFI_INVALID_PARAMETER Language is NULL.
@retval EFI_INVALID_PARAMETER DriverName is NULL.
@retval EFI_UNSUPPORTED The driver specified by This does not support
the language specified by Language.
**/
EFI_STATUS
EFIAPI
ArpComponentNameGetDriverName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN CHAR8 *Language,
OUT CHAR16 **DriverName
);
/**
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[in] This A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
EFI_COMPONENT_NAME_PROTOCOL instance.
@param[in] ControllerHandle 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[in] ChildHandle 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[in] Language 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[out] ControllerName 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
ArpComponentNameGetControllerName (
IN EFI_COMPONENT_NAME_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE ChildHandle OPTIONAL,
IN CHAR8 *Language,
OUT CHAR16 **ControllerName
);
#endif
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