mirror of https://github.com/acidanthera/audk.git
548 lines
18 KiB
C
548 lines
18 KiB
C
/** @file
|
|
The entry point of IScsi driver.
|
|
|
|
Copyright (c) 2004 - 2010, 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
|
|
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.
|
|
|
|
**/
|
|
|
|
#include "IScsiImpl.h"
|
|
|
|
EFI_DRIVER_BINDING_PROTOCOL gIScsiDriverBinding = {
|
|
IScsiDriverBindingSupported,
|
|
IScsiDriverBindingStart,
|
|
IScsiDriverBindingStop,
|
|
0xa,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
EFI_GUID gIScsiPrivateGuid = ISCSI_PRIVATE_GUID;
|
|
|
|
|
|
/**
|
|
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
|
|
IScsiDriverBindingSupported (
|
|
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
|
IN EFI_HANDLE ControllerHandle,
|
|
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EFI_DEVICE_PATH_PROTOCOL *CurrentDevicePath;
|
|
|
|
Status = gBS->OpenProtocol (
|
|
ControllerHandle,
|
|
&gIScsiPrivateGuid,
|
|
NULL,
|
|
This->DriverBindingHandle,
|
|
ControllerHandle,
|
|
EFI_OPEN_PROTOCOL_TEST_PROTOCOL
|
|
);
|
|
if (!EFI_ERROR (Status)) {
|
|
return EFI_ALREADY_STARTED;
|
|
}
|
|
|
|
Status = gBS->OpenProtocol (
|
|
ControllerHandle,
|
|
&gEfiTcp4ServiceBindingProtocolGuid,
|
|
NULL,
|
|
This->DriverBindingHandle,
|
|
ControllerHandle,
|
|
EFI_OPEN_PROTOCOL_TEST_PROTOCOL
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
CurrentDevicePath = RemainingDevicePath;
|
|
if (CurrentDevicePath != NULL) {
|
|
while (!IsDevicePathEnd (CurrentDevicePath)) {
|
|
if ((CurrentDevicePath->Type == MESSAGING_DEVICE_PATH) && (CurrentDevicePath->SubType == MSG_ISCSI_DP)) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
CurrentDevicePath = NextDevicePathNode (CurrentDevicePath);
|
|
}
|
|
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
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
|
|
IScsiDriverBindingStart (
|
|
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
|
IN EFI_HANDLE ControllerHandle,
|
|
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
ISCSI_DRIVER_DATA *Private;
|
|
VOID *Interface;
|
|
|
|
Private = IScsiCreateDriverData (This->DriverBindingHandle, ControllerHandle);
|
|
if (Private == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
//
|
|
// Create a underlayer child instance, but not need to configure it. Just open ChildHandle
|
|
// via BY_DRIVER. That is, establishing the relationship between ControllerHandle and ChildHandle.
|
|
// Therefore, when DisconnectController(), especially VLAN virtual controller handle,
|
|
// IScsiDriverBindingStop() will be called.
|
|
//
|
|
Status = NetLibCreateServiceChild (
|
|
ControllerHandle,
|
|
This->DriverBindingHandle,
|
|
&gEfiTcp4ServiceBindingProtocolGuid,
|
|
&Private->ChildHandle
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
goto ON_ERROR;
|
|
}
|
|
|
|
Status = gBS->OpenProtocol (
|
|
Private->ChildHandle,
|
|
&gEfiTcp4ProtocolGuid,
|
|
&Interface,
|
|
This->DriverBindingHandle,
|
|
ControllerHandle,
|
|
EFI_OPEN_PROTOCOL_BY_DRIVER
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
goto ON_ERROR;
|
|
}
|
|
|
|
//
|
|
// Always install private protocol no matter what happens later. We need to
|
|
// keep the relationship between ControllerHandle and ChildHandle.
|
|
//
|
|
Status = gBS->InstallProtocolInterface (
|
|
&ControllerHandle,
|
|
&gIScsiPrivateGuid,
|
|
EFI_NATIVE_INTERFACE,
|
|
&Private->IScsiIdentifier
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
goto ON_ERROR;
|
|
}
|
|
|
|
//
|
|
// Try to add a port configuration page for this controller.
|
|
//
|
|
IScsiConfigUpdateForm (This->DriverBindingHandle, ControllerHandle, TRUE);
|
|
|
|
//
|
|
// Get the iSCSI configuration data of this controller.
|
|
//
|
|
Status = IScsiGetConfigData (Private);
|
|
if (EFI_ERROR (Status)) {
|
|
goto ON_ERROR;
|
|
}
|
|
//
|
|
// Try to login and create an iSCSI session according to the configuration.
|
|
//
|
|
Status = IScsiSessionLogin (Private);
|
|
if (Status == EFI_MEDIA_CHANGED) {
|
|
//
|
|
// The specified target is not available and the redirection information is
|
|
// got, login the session again with the updated target address.
|
|
//
|
|
Status = IScsiSessionLogin (Private);
|
|
}
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
goto ON_ERROR;
|
|
}
|
|
//
|
|
// Duplicate the Session's tcp connection device path. The source port field
|
|
// will be set to zero as one iSCSI session is comprised of several iSCSI
|
|
// connections.
|
|
//
|
|
Private->DevicePath = IScsiGetTcpConnDevicePath (Private);
|
|
if (Private->DevicePath == NULL) {
|
|
goto ON_ERROR;
|
|
}
|
|
//
|
|
// Install the updated device path onto the ExtScsiPassThruHandle.
|
|
//
|
|
Status = gBS->InstallProtocolInterface (
|
|
&Private->ExtScsiPassThruHandle,
|
|
&gEfiDevicePathProtocolGuid,
|
|
EFI_NATIVE_INTERFACE,
|
|
Private->DevicePath
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
goto ON_ERROR;
|
|
}
|
|
|
|
//
|
|
// Update/Publish the iSCSI Boot Firmware Table.
|
|
//
|
|
IScsiPublishIbft ();
|
|
|
|
return EFI_SUCCESS;
|
|
|
|
ON_ERROR:
|
|
|
|
IScsiSessionAbort (&Private->Session);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
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
|
|
IScsiDriverBindingStop (
|
|
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
|
IN EFI_HANDLE ControllerHandle,
|
|
IN UINTN NumberOfChildren,
|
|
IN EFI_HANDLE *ChildHandleBuffer OPTIONAL
|
|
)
|
|
{
|
|
EFI_HANDLE IScsiController;
|
|
EFI_STATUS Status;
|
|
ISCSI_PRIVATE_PROTOCOL *IScsiIdentifier;
|
|
ISCSI_DRIVER_DATA *Private;
|
|
EFI_EXT_SCSI_PASS_THRU_PROTOCOL *PassThru;
|
|
ISCSI_CONNECTION *Conn;
|
|
|
|
if (NumberOfChildren != 0) {
|
|
//
|
|
// We should have only one child.
|
|
//
|
|
Status = gBS->OpenProtocol (
|
|
ChildHandleBuffer[0],
|
|
&gEfiExtScsiPassThruProtocolGuid,
|
|
(VOID **) &PassThru,
|
|
This->DriverBindingHandle,
|
|
ControllerHandle,
|
|
EFI_OPEN_PROTOCOL_GET_PROTOCOL
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
Private = ISCSI_DRIVER_DATA_FROM_EXT_SCSI_PASS_THRU (PassThru);
|
|
Conn = NET_LIST_HEAD (&Private->Session.Conns, ISCSI_CONNECTION, Link);
|
|
|
|
//
|
|
// Previously the TCP4 protocol is opened BY_CHILD_CONTROLLER. Just close
|
|
// the protocol here but not uninstall the device path protocol and
|
|
// EXT SCSI PASS THRU protocol installed on ExtScsiPassThruHandle.
|
|
//
|
|
gBS->CloseProtocol (
|
|
Conn->Tcp4Io.Handle,
|
|
&gEfiTcp4ProtocolGuid,
|
|
Private->Image,
|
|
Private->ExtScsiPassThruHandle
|
|
);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
//
|
|
// Get the handle of the controller we are controling.
|
|
//
|
|
IScsiController = NetLibGetNicHandle (ControllerHandle, &gEfiTcp4ProtocolGuid);
|
|
|
|
Status = gBS->OpenProtocol (
|
|
IScsiController,
|
|
&gIScsiPrivateGuid,
|
|
(VOID **)&IScsiIdentifier,
|
|
This->DriverBindingHandle,
|
|
ControllerHandle,
|
|
EFI_OPEN_PROTOCOL_GET_PROTOCOL
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
Private = ISCSI_DRIVER_DATA_FROM_IDENTIFIER (IScsiIdentifier);
|
|
|
|
if (Private->ChildHandle != NULL) {
|
|
Status = gBS->CloseProtocol (
|
|
Private->ChildHandle,
|
|
&gEfiTcp4ProtocolGuid,
|
|
This->DriverBindingHandle,
|
|
IScsiController
|
|
);
|
|
|
|
ASSERT (!EFI_ERROR (Status));
|
|
|
|
Status = NetLibDestroyServiceChild (
|
|
IScsiController,
|
|
This->DriverBindingHandle,
|
|
&gEfiTcp4ServiceBindingProtocolGuid,
|
|
Private->ChildHandle
|
|
);
|
|
ASSERT (!EFI_ERROR (Status));
|
|
}
|
|
|
|
IScsiConfigUpdateForm (This->DriverBindingHandle, IScsiController, FALSE);
|
|
|
|
//
|
|
// Uninstall the private protocol.
|
|
//
|
|
gBS->UninstallProtocolInterface (
|
|
IScsiController,
|
|
&gIScsiPrivateGuid,
|
|
&Private->IScsiIdentifier
|
|
);
|
|
|
|
//
|
|
// Update the iSCSI Boot Firware Table.
|
|
//
|
|
IScsiPublishIbft ();
|
|
|
|
IScsiSessionAbort (&Private->Session);
|
|
IScsiCleanDriverData (Private);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Unloads an image(the iSCSI driver).
|
|
|
|
@param[in] ImageHandle Handle that identifies the image to be unloaded.
|
|
|
|
@retval EFI_SUCCESS The image has been unloaded.
|
|
@retval Others Other errors as indicated.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
EfiIScsiUnload (
|
|
IN EFI_HANDLE ImageHandle
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
UINTN DeviceHandleCount;
|
|
EFI_HANDLE *DeviceHandleBuffer;
|
|
UINTN Index;
|
|
|
|
//
|
|
// Try to disonnect the driver from the devices it's controlling.
|
|
//
|
|
Status = gBS->LocateHandleBuffer (
|
|
AllHandles,
|
|
NULL,
|
|
NULL,
|
|
&DeviceHandleCount,
|
|
&DeviceHandleBuffer
|
|
);
|
|
if (!EFI_ERROR (Status)) {
|
|
for (Index = 0; Index < DeviceHandleCount; Index++) {
|
|
Status = gBS->DisconnectController (
|
|
DeviceHandleBuffer[Index],
|
|
ImageHandle,
|
|
NULL
|
|
);
|
|
}
|
|
|
|
if (DeviceHandleBuffer != NULL) {
|
|
FreePool (DeviceHandleBuffer);
|
|
}
|
|
}
|
|
//
|
|
// Unload the iSCSI configuration form.
|
|
//
|
|
IScsiConfigFormUnload (gIScsiDriverBinding.DriverBindingHandle);
|
|
|
|
//
|
|
// Uninstall the protocols installed by iSCSI driver.
|
|
//
|
|
Status = gBS->UninstallMultipleProtocolInterfaces (
|
|
ImageHandle,
|
|
&gEfiDriverBindingProtocolGuid,
|
|
&gIScsiDriverBinding,
|
|
&gEfiComponentName2ProtocolGuid,
|
|
&gIScsiComponentName2,
|
|
&gEfiComponentNameProtocolGuid,
|
|
&gIScsiComponentName,
|
|
&gEfiIScsiInitiatorNameProtocolGuid,
|
|
&gIScsiInitiatorName,
|
|
NULL
|
|
);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
This is the declaration of an EFI image entry point. This entry point is
|
|
the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including
|
|
both device drivers and bus drivers. It initialize the global variables and
|
|
publish the driver binding protocol.
|
|
|
|
@param[in] ImageHandle The firmware allocated handle for the UEFI image.
|
|
@param[in] SystemTable A pointer to the EFI System Table.
|
|
|
|
@retval EFI_SUCCESS The operation completed successfully.
|
|
@retval EFI_ACCESS_DENIED EFI_ISCSI_INITIATOR_NAME_PROTOCOL was installed unexpectedly.
|
|
@retval Others Other errors as indicated.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
IScsiDriverEntryPoint (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EFI_ISCSI_INITIATOR_NAME_PROTOCOL *IScsiInitiatorName;
|
|
|
|
//
|
|
// There should be only one EFI_ISCSI_INITIATOR_NAME_PROTOCOL.
|
|
//
|
|
Status = gBS->LocateProtocol (
|
|
&gEfiIScsiInitiatorNameProtocolGuid,
|
|
NULL,
|
|
(VOID**) &IScsiInitiatorName
|
|
);
|
|
|
|
if (!EFI_ERROR (Status)) {
|
|
return EFI_ACCESS_DENIED;
|
|
}
|
|
|
|
//
|
|
// Initialize the EFI Driver Library
|
|
//
|
|
Status = EfiLibInstallDriverBindingComponentName2 (
|
|
ImageHandle,
|
|
SystemTable,
|
|
&gIScsiDriverBinding,
|
|
ImageHandle,
|
|
&gIScsiComponentName,
|
|
&gIScsiComponentName2
|
|
);
|
|
|
|
if (!EFI_ERROR (Status)) {
|
|
//
|
|
// Install the iSCSI Initiator Name Protocol.
|
|
//
|
|
Status = gBS->InstallProtocolInterface (
|
|
&ImageHandle,
|
|
&gEfiIScsiInitiatorNameProtocolGuid,
|
|
EFI_NATIVE_INTERFACE,
|
|
&gIScsiInitiatorName
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
gBS->UninstallMultipleProtocolInterfaces (
|
|
ImageHandle,
|
|
&gEfiDriverBindingProtocolGuid,
|
|
&gIScsiDriverBinding,
|
|
&gEfiComponentName2ProtocolGuid,
|
|
&gIScsiComponentName2,
|
|
&gEfiComponentNameProtocolGuid,
|
|
&gIScsiComponentName,
|
|
NULL
|
|
);
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// Initialize the configuration form of iSCSI.
|
|
//
|
|
Status = IScsiConfigFormInit ();
|
|
if (EFI_ERROR (Status)) {
|
|
gBS->UninstallMultipleProtocolInterfaces (
|
|
ImageHandle,
|
|
&gEfiDriverBindingProtocolGuid,
|
|
&gIScsiDriverBinding,
|
|
&gEfiComponentName2ProtocolGuid,
|
|
&gIScsiComponentName2,
|
|
&gEfiComponentNameProtocolGuid,
|
|
&gIScsiComponentName,
|
|
&gEfiIScsiInitiatorNameProtocolGuid,
|
|
&gIScsiInitiatorName,
|
|
NULL
|
|
);
|
|
}
|
|
}
|
|
return Status;
|
|
}
|
|
|