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audk/NetworkPkg/MnpDxe/MnpDriver.c

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/** @file
Implementation of driver entry point and driver binding protocol.
Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "MnpDriver.h"
#include "MnpImpl.h"
#include "MnpVlan.h"
EFI_DRIVER_BINDING_PROTOCOL gMnpDriverBinding = {
MnpDriverBindingSupported,
MnpDriverBindingStart,
MnpDriverBindingStop,
0xa,
NULL,
NULL
};
/**
Callback function which provided by user to remove one node in NetDestroyLinkList process.
@param[in] Entry The entry to be removed.
@param[in] Context Pointer to the callback context corresponds to the Context in NetDestroyLinkList.
@retval EFI_SUCCESS The entry has been removed successfully.
@retval Others Fail to remove the entry.
**/
EFI_STATUS
EFIAPI
MnpDestroyServiceDataEntry (
IN LIST_ENTRY *Entry,
IN VOID *Context
)
{
MNP_SERVICE_DATA *MnpServiceData;
MnpServiceData = MNP_SERVICE_DATA_FROM_LINK (Entry);
return MnpDestroyServiceData (MnpServiceData);
}
/**
Callback function which provided by user to remove one node in NetDestroyLinkList process.
@param[in] Entry The entry to be removed.
@param[in] Context Pointer to the callback context corresponds to the Context in NetDestroyLinkList.
@retval EFI_SUCCESS The entry has been removed successfully.
@retval Others Fail to remove the entry.
**/
EFI_STATUS
EFIAPI
MnpDestroyServiceChildEntry (
IN LIST_ENTRY *Entry,
IN VOID *Context
)
{
MNP_SERVICE_DATA *MnpServiceData;
MnpServiceData = MNP_SERVICE_DATA_FROM_LINK (Entry);
return MnpDestroyServiceChild (MnpServiceData);
}
/**
Test to see if this driver supports ControllerHandle. This service
is called by the EFI boot service ConnectController(). In
order to make drivers as small as possible, there are a few calling
restrictions for this service. ConnectController() must
follow these calling restrictions. If any other agent wishes to call
Supported() it must also follow these calling restrictions.
@param[in] This Protocol instance pointer.
@param[in] ControllerHandle Handle of device to test.
@param[in] RemainingDevicePath Optional parameter use to pick a specific
child device to start.
@retval EFI_SUCCESS This driver supports this device.
@retval EFI_ALREADY_STARTED This driver is already running on this device.
@retval Others This driver does not support this device.
**/
EFI_STATUS
EFIAPI
MnpDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
)
{
EFI_STATUS Status;
EFI_SIMPLE_NETWORK_PROTOCOL *Snp;
//
// Test to open the Simple Network protocol BY_DRIVER.
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiSimpleNetworkProtocolGuid,
(VOID **) &Snp,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Close the opened SNP protocol.
//
gBS->CloseProtocol (
ControllerHandle,
&gEfiSimpleNetworkProtocolGuid,
This->DriverBindingHandle,
ControllerHandle
);
return EFI_SUCCESS;
}
/**
Start this driver on ControllerHandle. This service is called by the
EFI boot service ConnectController(). In order to make drivers as small
as possible, there are a few calling restrictions for this service.
ConnectController() must follow these calling restrictions. If any other
agent wishes to call Start() it must also follow these calling restrictions.
@param[in] This Protocol instance pointer.
@param[in] ControllerHandle Handle of device to bind driver to.
@param[in] RemainingDevicePath Optional parameter use to pick a specific
child device to start.
@retval EFI_SUCCESS This driver is added to ControllerHandle.
@retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle.
@retval EFI_OUT_OF_RESOURCES Failed to allocate memory for Mnp Service Data.
@retval Others This driver does not support this device.
**/
EFI_STATUS
EFIAPI
MnpDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
)
{
EFI_STATUS Status;
MNP_SERVICE_DATA *MnpServiceData;
MNP_DEVICE_DATA *MnpDeviceData;
LIST_ENTRY *Entry;
VLAN_TCI *VlanVariable;
UINTN NumberOfVlan;
UINTN Index;
VlanVariable = NULL;
//
// Initialize the Mnp Device Data
//
MnpDeviceData = AllocateZeroPool (sizeof (MNP_DEVICE_DATA));
if (MnpDeviceData == NULL) {
DEBUG ((EFI_D_ERROR, "MnpDriverBindingStart(): Failed to allocate the Mnp Device Data.\n"));
return EFI_OUT_OF_RESOURCES;
}
Status = MnpInitializeDeviceData (MnpDeviceData, This->DriverBindingHandle, ControllerHandle);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "MnpDriverBindingStart: MnpInitializeDeviceData failed, %r.\n", Status));
FreePool (MnpDeviceData);
return Status;
}
//
// Check whether NIC driver has already produced VlanConfig protocol
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiVlanConfigProtocolGuid,
NULL,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_TEST_PROTOCOL
);
if (!EFI_ERROR (Status)) {
//
// NIC hardware already implement VLAN,
// no need to provide software VLAN implementation in MNP driver
//
MnpDeviceData->NumberOfVlan = 0;
ZeroMem (&MnpDeviceData->VlanConfig, sizeof (EFI_VLAN_CONFIG_PROTOCOL));
MnpServiceData = MnpCreateServiceData (MnpDeviceData, 0, 0);
Status = (MnpServiceData != NULL) ? EFI_SUCCESS : EFI_OUT_OF_RESOURCES;
goto Exit;
}
//
// Install VLAN Config Protocol
//
Status = gBS->InstallMultipleProtocolInterfaces (
&ControllerHandle,
&gEfiVlanConfigProtocolGuid,
&MnpDeviceData->VlanConfig,
NULL
);
if (EFI_ERROR (Status)) {
goto Exit;
}
//
// Get current VLAN configuration from EFI Variable
//
NumberOfVlan = 0;
Status = MnpGetVlanVariable (MnpDeviceData, &NumberOfVlan, &VlanVariable);
if (EFI_ERROR (Status)) {
//
// No VLAN is set, create a default MNP service data for untagged frame
//
MnpDeviceData->NumberOfVlan = 0;
MnpServiceData = MnpCreateServiceData (MnpDeviceData, 0, 0);
Status = (MnpServiceData != NULL) ? EFI_SUCCESS : EFI_OUT_OF_RESOURCES;
goto Exit;
}
//
// Create MNP service data for each VLAN
//
MnpDeviceData->NumberOfVlan = NumberOfVlan;
for (Index = 0; Index < NumberOfVlan; Index++) {
MnpServiceData = MnpCreateServiceData (
MnpDeviceData,
VlanVariable[Index].Bits.Vid,
(UINT8) VlanVariable[Index].Bits.Priority
);
if (MnpServiceData == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Exit;
}
}
Exit:
if (VlanVariable != NULL) {
FreePool (VlanVariable);
}
if (EFI_ERROR (Status)) {
//
// Destroy all MNP service data
//
while (!IsListEmpty (&MnpDeviceData->ServiceList)) {
Entry = GetFirstNode (&MnpDeviceData->ServiceList);
MnpServiceData = MNP_SERVICE_DATA_FROM_LINK (Entry);
MnpDestroyServiceData (MnpServiceData);
}
//
// Uninstall the VLAN Config Protocol if any
//
if (MnpDeviceData->VlanConfig.Set != NULL) {
gBS->UninstallMultipleProtocolInterfaces (
MnpDeviceData->ControllerHandle,
&gEfiVlanConfigProtocolGuid,
&MnpDeviceData->VlanConfig,
NULL
);
}
//
// Destroy Mnp Device Data
//
MnpDestroyDeviceData (MnpDeviceData, This->DriverBindingHandle);
FreePool (MnpDeviceData);
}
return Status;
}
/**
Stop this driver on ControllerHandle. This service is called by the
EFI boot service DisconnectController(). In order to make drivers as
small as possible, there are a few calling restrictions for this service.
DisconnectController() must follow these calling restrictions. If any other
agent wishes to call Stop() it must also follow these calling restrictions.
@param[in] This Protocol instance pointer.
@param[in] ControllerHandle Handle of device to stop driver on.
@param[in] NumberOfChildren Number of Handles in ChildHandleBuffer. If
number of children is zero stop the entire
bus driver.
@param[in] ChildHandleBuffer List of Child Handles to Stop.
@retval EFI_SUCCESS This driver is removed ControllerHandle.
@retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
**/
EFI_STATUS
EFIAPI
MnpDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE ControllerHandle,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer OPTIONAL
)
{
EFI_STATUS Status;
EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;
EFI_VLAN_CONFIG_PROTOCOL *VlanConfig;
MNP_DEVICE_DATA *MnpDeviceData;
MNP_SERVICE_DATA *MnpServiceData;
LIST_ENTRY *List;
UINTN ListLength;
//
// Try to retrieve MNP service binding protocol from the ControllerHandle
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiManagedNetworkServiceBindingProtocolGuid,
(VOID **) &ServiceBinding,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
//
// Retrieve VLAN Config Protocol from the ControllerHandle
//
Status = gBS->OpenProtocol (
ControllerHandle,
&gEfiVlanConfigProtocolGuid,
(VOID **) &VlanConfig,
This->DriverBindingHandle,
ControllerHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "MnpDriverBindingStop: try to stop unknown Controller.\n"));
return EFI_DEVICE_ERROR;
}
MnpDeviceData = MNP_DEVICE_DATA_FROM_THIS (VlanConfig);
} else {
MnpServiceData = MNP_SERVICE_DATA_FROM_THIS (ServiceBinding);
MnpDeviceData = MnpServiceData->MnpDeviceData;
}
if (NumberOfChildren == 0) {
//
// Destroy all MNP service data
//
List = &MnpDeviceData->ServiceList;
Status = NetDestroyLinkList (
List,
MnpDestroyServiceDataEntry,
NULL,
&ListLength
);
if (EFI_ERROR (Status) || ListLength !=0) {
return EFI_DEVICE_ERROR;
}
//
// Uninstall the VLAN Config Protocol if any
//
if (MnpDeviceData->VlanConfig.Set != NULL) {
gBS->UninstallMultipleProtocolInterfaces (
MnpDeviceData->ControllerHandle,
&gEfiVlanConfigProtocolGuid,
&MnpDeviceData->VlanConfig,
NULL
);
}
//
// Destroy Mnp Device Data
//
MnpDestroyDeviceData (MnpDeviceData, This->DriverBindingHandle);
FreePool (MnpDeviceData);
if (gMnpControllerNameTable != NULL) {
FreeUnicodeStringTable (gMnpControllerNameTable);
gMnpControllerNameTable = NULL;
}
return EFI_SUCCESS;
}
//
// Stop all MNP child
//
List = &MnpDeviceData->ServiceList;
Status = NetDestroyLinkList (
List,
MnpDestroyServiceChildEntry,
NULL,
&ListLength
);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
Creates a child handle with a set of I/O services.
@param[in] This Protocol instance pointer.
@param[in, out] ChildHandle Pointer to the handle of the child to create. If
it is NULL, then a new handle is created. If
it is not NULL, then the I/O services are added
to the existing child handle.
@retval EFI_SUCCESS The protocol was added to ChildHandle.
@retval EFI_INVALID_PARAMETER ChildHandle is NULL.
@retval EFI_OUT_OF_RESOURCES There are not enough resources available to
create the child.
@retval Others The child handle was not created.
**/
EFI_STATUS
EFIAPI
MnpServiceBindingCreateChild (
IN EFI_SERVICE_BINDING_PROTOCOL *This,
IN OUT EFI_HANDLE *ChildHandle
)
{
EFI_STATUS Status;
MNP_SERVICE_DATA *MnpServiceData;
MNP_INSTANCE_DATA *Instance;
VOID *MnpSb;
EFI_TPL OldTpl;
if ((This == NULL) || (ChildHandle == NULL)) {
return EFI_INVALID_PARAMETER;
}
MnpServiceData = MNP_SERVICE_DATA_FROM_THIS (This);
//
// Allocate buffer for the new instance.
//
Instance = AllocateZeroPool (sizeof (MNP_INSTANCE_DATA));
if (Instance == NULL) {
DEBUG ((DEBUG_ERROR, "MnpServiceBindingCreateChild: Failed to allocate memory for the new instance.\n"));
return EFI_OUT_OF_RESOURCES;
}
//
// Init the instance data.
//
MnpInitializeInstanceData (MnpServiceData, Instance);
Status = gBS->InstallMultipleProtocolInterfaces (
ChildHandle,
&gEfiManagedNetworkProtocolGuid,
&Instance->ManagedNetwork,
NULL
);
if (EFI_ERROR (Status)) {
DEBUG (
(EFI_D_ERROR,
"MnpServiceBindingCreateChild: Failed to install the MNP protocol, %r.\n",
Status)
);
goto ErrorExit;
}
//
// Save the instance's childhandle.
//
Instance->Handle = *ChildHandle;
Status = gBS->OpenProtocol (
MnpServiceData->ServiceHandle,
&gEfiManagedNetworkServiceBindingProtocolGuid,
(VOID **) &MnpSb,
gMnpDriverBinding.DriverBindingHandle,
Instance->Handle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
if (EFI_ERROR (Status)) {
goto ErrorExit;
}
//
// Add the child instance into ChildrenList.
//
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
InsertTailList (&MnpServiceData->ChildrenList, &Instance->InstEntry);
MnpServiceData->ChildrenNumber++;
gBS->RestoreTPL (OldTpl);
ErrorExit:
if (EFI_ERROR (Status)) {
if (Instance->Handle != NULL) {
gBS->UninstallMultipleProtocolInterfaces (
Instance->Handle,
&gEfiManagedNetworkProtocolGuid,
&Instance->ManagedNetwork,
NULL
);
}
FreePool (Instance);
}
return Status;
}
/**
Destroys a child handle with a set of I/O services.
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[in] This Pointer to the EFI_SERVICE_BINDING_PROTOCOL
instance.
@param[in] ChildHandle Handle of the child to destroy.
@retval EFI_SUCCESS The protocol was removed from ChildHandle.
@retval EFI_UNSUPPORTED ChildHandle does not support the protocol that
is being removed.
@retval EFI_INVALID_PARAMETER ChildHandle is NULL.
@retval EFI_ACCESS_DENIED The protocol could not be removed from the
ChildHandle because its services are being
used.
@retval Others The child handle was not destroyed.
**/
EFI_STATUS
EFIAPI
MnpServiceBindingDestroyChild (
IN EFI_SERVICE_BINDING_PROTOCOL *This,
IN EFI_HANDLE ChildHandle
)
{
EFI_STATUS Status;
MNP_SERVICE_DATA *MnpServiceData;
EFI_MANAGED_NETWORK_PROTOCOL *ManagedNetwork;
MNP_INSTANCE_DATA *Instance;
EFI_TPL OldTpl;
if ((This == NULL) || (ChildHandle == NULL)) {
return EFI_INVALID_PARAMETER;
}
MnpServiceData = MNP_SERVICE_DATA_FROM_THIS (This);
//
// Try to retrieve ManagedNetwork Protocol from ChildHandle.
//
Status = gBS->OpenProtocol (
ChildHandle,
&gEfiManagedNetworkProtocolGuid,
(VOID **) &ManagedNetwork,
gMnpDriverBinding.DriverBindingHandle,
ChildHandle,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
}
Instance = MNP_INSTANCE_DATA_FROM_THIS (ManagedNetwork);
//
// MnpServiceBindingDestroyChild may be called twice: first called by
// MnpServiceBindingStop, second called by uninstalling the MNP protocol
// in this ChildHandle. Use destroyed to make sure the resource clean code
// will only excecute once.
//
if (Instance->Destroyed) {
return EFI_SUCCESS;
}
Instance->Destroyed = TRUE;
//
// Close the Simple Network protocol.
//
gBS->CloseProtocol (
MnpServiceData->ServiceHandle,
&gEfiManagedNetworkServiceBindingProtocolGuid,
MnpServiceData->MnpDeviceData->ImageHandle,
ChildHandle
);
//
// Uninstall the ManagedNetwork protocol.
//
Status = gBS->UninstallMultipleProtocolInterfaces (
ChildHandle,
&gEfiManagedNetworkProtocolGuid,
&Instance->ManagedNetwork,
NULL
);
if (EFI_ERROR (Status)) {
DEBUG (
(EFI_D_ERROR,
"MnpServiceBindingDestroyChild: Failed to uninstall the ManagedNetwork protocol, %r.\n",
Status)
);
Instance->Destroyed = FALSE;
return Status;
}
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
//
// Reset the configuration.
//
ManagedNetwork->Configure (ManagedNetwork, NULL);
//
// Try to flush the RcvdPacketQueue.
//
MnpFlushRcvdDataQueue (Instance);
//
// Clean the RxTokenMap.
//
NetMapClean (&Instance->RxTokenMap);
//
// Remove this instance from the ChildrenList.
//
RemoveEntryList (&Instance->InstEntry);
MnpServiceData->ChildrenNumber--;
gBS->RestoreTPL (OldTpl);
FreePool (Instance);
return Status;
}
/**
The entry point for Mnp driver which installs the driver binding and component
name protocol on its ImageHandle.
@param[in] ImageHandle The image handle of the driver.
@param[in] SystemTable The system table.
@retval EFI_SUCCESS The driver binding and component name protocols are
successfully installed.
@retval Others Other errors as indicated.
**/
EFI_STATUS
EFIAPI
MnpDriverEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
return EfiLibInstallDriverBindingComponentName2 (
ImageHandle,
SystemTable,
&gMnpDriverBinding,
ImageHandle,
&gMnpComponentName,
&gMnpComponentName2
);
}
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