[mirror_edk2.git] / EdkModulePkg / Bus / Pci / CirrusLogic / Dxe / CirrusLogic5430.c

/*++\r
\r
Copyright (c) 2006, Intel Corporation                                                         \r
All rights reserved. This program and the accompanying materials                          \r
are licensed and made available under the terms and conditions of the BSD License         \r
which accompanies this distribution.  The full text of the license may be found at        \r
http://opensource.org/licenses/bsd-license.php                                            \r
                                                                                          \r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
\r
Module Name:\r
\r
  CirrusLogic5430.c\r
    \r
Abstract:\r
\r
  Cirrus Logic 5430 Controller Driver.\r
  This driver is a sample implementation of the UGA Draw Protocol for the\r
  Cirrus Logic 5430 family of PCI video controllers.  This driver is only\r
  usable in the EFI pre-boot environment.  This sample is intended to show\r
  how the UGA Draw Protocol is able to function.  The UGA I/O Protocol is not\r
  implemented in this sample.  A fully compliant EFI UGA driver requires both\r
  the UGA Draw and the UGA I/O Protocol.  Please refer to Microsoft's\r
  documentation on UGA for details on how to write a UGA driver that is able\r
  to function both in the EFI pre-boot environment and from the OS runtime.\r
\r
Revision History:\r
\r
--*/\r
\r
//\r
// Cirrus Logic 5430 Controller Driver\r
//\r
\r
#include "CirrusLogic5430.h"\r
\r
EFI_DRIVER_BINDING_PROTOCOL gCirrusLogic5430DriverBinding = {\r
  CirrusLogic5430ControllerDriverSupported,\r
  CirrusLogic5430ControllerDriverStart,\r
  CirrusLogic5430ControllerDriverStop,\r
  0x10,\r
  NULL,\r
  NULL\r
};\r
\r
EFI_STATUS\r
EFIAPI\r
CirrusLogic5430ControllerDriverSupported (\r
  IN EFI_DRIVER_BINDING_PROTOCOL    *This,\r
  IN EFI_HANDLE                     Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath\r
  )\r
/*++\r
\r
Routine Description:\r
\r
Arguments:\r
\r
Returns:\r
\r
    None\r
\r
--*/\r
// TODO:    This - add argument and description to function comment\r
// TODO:    Controller - add argument and description to function comment\r
// TODO:    RemainingDevicePath - add argument and description to function comment\r
{\r
  EFI_STATUS          Status;\r
  EFI_PCI_IO_PROTOCOL *PciIo;\r
  PCI_TYPE00          Pci;\r
\r
  //\r
  // Open the PCI I/O Protocol\r
  //\r
  Status = gBS->OpenProtocol (\r
                  Controller,\r
                  &gEfiPciIoProtocolGuid,\r
                  (VOID **) &PciIo,\r
                  This->DriverBindingHandle,\r
                  Controller,\r
                  EFI_OPEN_PROTOCOL_BY_DRIVER\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  //\r
  // Read the PCI Configuration Header from the PCI Device\r
  //\r
  Status = PciIo->Pci.Read (\r
                        PciIo,\r
                        EfiPciIoWidthUint32,\r
                        0,\r
                        sizeof (Pci) / sizeof (UINT32),\r
                        &Pci\r
                        );\r
  if (EFI_ERROR (Status)) {\r
    goto Done;\r
  }\r
\r
  Status = EFI_UNSUPPORTED;\r
  //\r
  // See if the I/O enable is on.  Most systems only allow one VGA device to be turned on\r
  // at a time, so see if this is one that is turned on.\r
  //\r
  //  if (((Pci.Hdr.Command & 0x01) == 0x01)) {\r
  //\r
  // See if this is a Cirrus Logic PCI controller\r
  //\r
  if (Pci.Hdr.VendorId == CIRRUS_LOGIC_VENDOR_ID) {\r
    //\r
    // See if this is a 5430 or a 5446 PCI controller\r
    //\r
    if (Pci.Hdr.DeviceId == CIRRUS_LOGIC_5430_DEVICE_ID) {\r
      Status = EFI_SUCCESS;\r
    }\r
\r
    if (Pci.Hdr.DeviceId == CIRRUS_LOGIC_5430_ALTERNATE_DEVICE_ID) {\r
      Status = EFI_SUCCESS;\r
    }\r
\r
    if (Pci.Hdr.DeviceId == CIRRUS_LOGIC_5446_DEVICE_ID) {\r
      Status = EFI_SUCCESS;\r
    }\r
  }\r
\r
Done:\r
  //\r
  // Close the PCI I/O Protocol\r
  //\r
  gBS->CloseProtocol (\r
        Controller,\r
        &gEfiPciIoProtocolGuid,\r
        This->DriverBindingHandle,\r
        Controller\r
        );\r
\r
  return Status;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
CirrusLogic5430ControllerDriverStart (\r
  IN EFI_DRIVER_BINDING_PROTOCOL    *This,\r
  IN EFI_HANDLE                     Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL       *RemainingDevicePath\r
  )\r
/*++\r
\r
Routine Description:\r
\r
Arguments:\r
\r
Returns:\r
\r
    None\r
\r
--*/\r
// TODO:    This - add argument and description to function comment\r
// TODO:    Controller - add argument and description to function comment\r
// TODO:    RemainingDevicePath - add argument and description to function comment\r
{\r
  EFI_STATUS                      Status;\r
  CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private;\r
\r
  //\r
  // Allocate Private context data for UGA Draw inteface.\r
  //\r
  Private = NULL;\r
  Private = AllocateZeroPool (sizeof (CIRRUS_LOGIC_5430_PRIVATE_DATA));\r
  if (Private == NULL) {\r
    Status = EFI_OUT_OF_RESOURCES;\r
    goto Error;\r
  }\r
\r
  //\r
  // Set up context record\r
  //\r
  Private->Signature  = CIRRUS_LOGIC_5430_PRIVATE_DATA_SIGNATURE;\r
  Private->Handle     = Controller;\r
\r
  //\r
  // Open PCI I/O Protocol\r
  //\r
  Status = gBS->OpenProtocol (\r
                  Private->Handle,\r
                  &gEfiPciIoProtocolGuid,\r
                  (VOID **) &Private->PciIo,\r
                  This->DriverBindingHandle,\r
                  Private->Handle,\r
                  EFI_OPEN_PROTOCOL_BY_DRIVER\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    goto Error;\r
  }\r
\r
  Status = Private->PciIo->Attributes (\r
                            Private->PciIo,\r
                            EfiPciIoAttributeOperationEnable,\r
                            EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY | EFI_PCI_IO_ATTRIBUTE_VGA_IO,\r
                            NULL\r
                            );\r
  if (EFI_ERROR (Status)) {\r
    goto Error;\r
  }\r
\r
  //\r
  // Start the UGA Draw software stack.\r
  //\r
  Status = CirrusLogic5430UgaDrawConstructor (Private);\r
  if (EFI_ERROR (Status)) {\r
    goto Error;\r
  }\r
\r
  //\r
  // Publish the UGA Draw interface to the world\r
  //\r
  Status = gBS->InstallMultipleProtocolInterfaces (\r
                  &Private->Handle,\r
                  &gEfiUgaDrawProtocolGuid,\r
                  &Private->UgaDraw,\r
                  NULL\r
                  );\r
\r
Error:\r
  if (EFI_ERROR (Status)) {\r
    if (Private) {\r
      if (Private->PciIo) {\r
        Private->PciIo->Attributes (\r
                          Private->PciIo,\r
                          EfiPciIoAttributeOperationDisable,\r
                          EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY | EFI_PCI_IO_ATTRIBUTE_VGA_IO,\r
                          NULL\r
                          );\r
      }\r
    }\r
\r
    //\r
    // Close the PCI I/O Protocol\r
    //\r
    gBS->CloseProtocol (\r
          Private->Handle,\r
          &gEfiPciIoProtocolGuid,\r
          This->DriverBindingHandle,\r
          Private->Handle\r
          );\r
    if (Private) {\r
      gBS->FreePool (Private);\r
    }\r
  }\r
\r
  return Status;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
CirrusLogic5430ControllerDriverStop (\r
  IN EFI_DRIVER_BINDING_PROTOCOL    *This,\r
  IN EFI_HANDLE                     Controller,\r
  IN UINTN                          NumberOfChildren,\r
  IN EFI_HANDLE                     *ChildHandleBuffer\r
  )\r
/*++\r
\r
Routine Description:\r
\r
Arguments:\r
\r
Returns:\r
\r
    None\r
\r
--*/\r
// TODO:    This - add argument and description to function comment\r
// TODO:    Controller - add argument and description to function comment\r
// TODO:    NumberOfChildren - add argument and description to function comment\r
// TODO:    ChildHandleBuffer - add argument and description to function comment\r
// TODO:    EFI_SUCCESS - add return value to function comment\r
{\r
  EFI_UGA_DRAW_PROTOCOL           *UgaDraw;\r
  EFI_STATUS                      Status;\r
  CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private;\r
\r
  Status = gBS->OpenProtocol (\r
                  Controller,\r
                  &gEfiUgaDrawProtocolGuid,\r
                  (VOID **) &UgaDraw,\r
                  This->DriverBindingHandle,\r
                  Controller,\r
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    //\r
    // If the UGA Draw interface does not exist the driver is not started\r
    //\r
    return Status;\r
  }\r
\r
  //\r
  // Get our private context information\r
  //\r
  Private = CIRRUS_LOGIC_5430_PRIVATE_DATA_FROM_UGA_DRAW_THIS (UgaDraw);\r
\r
  //\r
  // Remove the UGA Draw interface from the system\r
  //\r
  Status = gBS->UninstallMultipleProtocolInterfaces (\r
                  Private->Handle,\r
                  &gEfiUgaDrawProtocolGuid,\r
                  &Private->UgaDraw,\r
                  NULL\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  //\r
  // Shutdown the hardware\r
  //\r
  CirrusLogic5430UgaDrawDestructor (Private);\r
\r
  Private->PciIo->Attributes (\r
                    Private->PciIo,\r
                    EfiPciIoAttributeOperationDisable,\r
                    EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY | EFI_PCI_IO_ATTRIBUTE_VGA_IO,\r
                    NULL\r
                    );\r
\r
  //\r
  // Close the PCI I/O Protocol\r
  //\r
  gBS->CloseProtocol (\r
        Controller,\r
        &gEfiPciIoProtocolGuid,\r
        This->DriverBindingHandle,\r
        Controller\r
        );\r
\r
  //\r
  // Free our instance data\r
  //\r
  gBS->FreePool (Private);\r
\r
  return EFI_SUCCESS;\r
}\r
Commit	Line	Data
	1	/*++\r
	2	\r
	3	Copyright (c) 2006, Intel Corporation \r
	4	All rights reserved. This program and the accompanying materials \r
	5	are licensed and made available under the terms and conditions of the BSD License \r
	6	which accompanies this distribution. The full text of the license may be found at \r
	7	http://opensource.org/licenses/bsd-license.php \r
	8	\r
	9	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	10	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
	11	\r
	12	Module Name:\r
	13	\r
	14	CirrusLogic5430.c\r
	15	\r
	16	Abstract:\r
	17	\r
	18	Cirrus Logic 5430 Controller Driver.\r
	19	This driver is a sample implementation of the UGA Draw Protocol for the\r
	20	Cirrus Logic 5430 family of PCI video controllers. This driver is only\r
	21	usable in the EFI pre-boot environment. This sample is intended to show\r
	22	how the UGA Draw Protocol is able to function. The UGA I/O Protocol is not\r
	23	implemented in this sample. A fully compliant EFI UGA driver requires both\r
	24	the UGA Draw and the UGA I/O Protocol. Please refer to Microsoft's\r
	25	documentation on UGA for details on how to write a UGA driver that is able\r
	26	to function both in the EFI pre-boot environment and from the OS runtime.\r
	27	\r
	28	Revision History:\r
	29	\r
	30	--*/\r
	31	\r
	32	//\r
	33	// Cirrus Logic 5430 Controller Driver\r
	34	//\r
	35	\r
	36	#include "CirrusLogic5430.h"\r
	37	\r
	38	EFI_DRIVER_BINDING_PROTOCOL gCirrusLogic5430DriverBinding = {\r
	39	CirrusLogic5430ControllerDriverSupported,\r
	40	CirrusLogic5430ControllerDriverStart,\r
	41	CirrusLogic5430ControllerDriverStop,\r
	42	0x10,\r
	43	NULL,\r
	44	NULL\r
	45	};\r
	46	\r
	47	EFI_STATUS\r
	48	EFIAPI\r
	49	CirrusLogic5430ControllerDriverSupported (\r
	50	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	51	IN EFI_HANDLE Controller,\r
	52	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
	53	)\r
	54	/*++\r
	55	\r
	56	Routine Description:\r
	57	\r
	58	Arguments:\r
	59	\r
	60	Returns:\r
	61	\r
	62	None\r
	63	\r
	64	--*/\r
	65	// TODO: This - add argument and description to function comment\r
	66	// TODO: Controller - add argument and description to function comment\r
	67	// TODO: RemainingDevicePath - add argument and description to function comment\r
	68	{\r
	69	EFI_STATUS Status;\r
	70	EFI_PCI_IO_PROTOCOL *PciIo;\r
	71	PCI_TYPE00 Pci;\r
	72	\r
	73	//\r
	74	// Open the PCI I/O Protocol\r
	75	//\r
	76	Status = gBS->OpenProtocol (\r
	77	Controller,\r
	78	&gEfiPciIoProtocolGuid,\r
	79	(VOID **) &PciIo,\r
	80	This->DriverBindingHandle,\r
	81	Controller,\r
	82	EFI_OPEN_PROTOCOL_BY_DRIVER\r
	83	);\r
	84	if (EFI_ERROR (Status)) {\r
	85	return Status;\r
	86	}\r
	87	\r
	88	//\r
	89	// Read the PCI Configuration Header from the PCI Device\r
	90	//\r
	91	Status = PciIo->Pci.Read (\r
	92	PciIo,\r
	93	EfiPciIoWidthUint32,\r
	94	0,\r
	95	sizeof (Pci) / sizeof (UINT32),\r
	96	&Pci\r
	97	);\r
	98	if (EFI_ERROR (Status)) {\r
	99	goto Done;\r
	100	}\r
	101	\r
	102	Status = EFI_UNSUPPORTED;\r
	103	//\r
	104	// See if the I/O enable is on. Most systems only allow one VGA device to be turned on\r
	105	// at a time, so see if this is one that is turned on.\r
	106	//\r
	107	// if (((Pci.Hdr.Command & 0x01) == 0x01)) {\r
	108	//\r
	109	// See if this is a Cirrus Logic PCI controller\r
	110	//\r
	111	if (Pci.Hdr.VendorId == CIRRUS_LOGIC_VENDOR_ID) {\r
	112	//\r
	113	// See if this is a 5430 or a 5446 PCI controller\r
	114	//\r
	115	if (Pci.Hdr.DeviceId == CIRRUS_LOGIC_5430_DEVICE_ID) {\r
	116	Status = EFI_SUCCESS;\r
	117	}\r
	118	\r
	119	if (Pci.Hdr.DeviceId == CIRRUS_LOGIC_5430_ALTERNATE_DEVICE_ID) {\r
	120	Status = EFI_SUCCESS;\r
	121	}\r
	122	\r
	123	if (Pci.Hdr.DeviceId == CIRRUS_LOGIC_5446_DEVICE_ID) {\r
	124	Status = EFI_SUCCESS;\r
	125	}\r
	126	}\r
	127	\r
	128	Done:\r
	129	//\r
	130	// Close the PCI I/O Protocol\r
	131	//\r
	132	gBS->CloseProtocol (\r
	133	Controller,\r
	134	&gEfiPciIoProtocolGuid,\r
	135	This->DriverBindingHandle,\r
	136	Controller\r
	137	);\r
	138	\r
	139	return Status;\r
	140	}\r
	141	\r
	142	EFI_STATUS\r
	143	EFIAPI\r
	144	CirrusLogic5430ControllerDriverStart (\r
	145	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	146	IN EFI_HANDLE Controller,\r
	147	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
	148	)\r
	149	/*++\r
	150	\r
	151	Routine Description:\r
	152	\r
	153	Arguments:\r
	154	\r
	155	Returns:\r
	156	\r
	157	None\r
	158	\r
	159	--*/\r
	160	// TODO: This - add argument and description to function comment\r
	161	// TODO: Controller - add argument and description to function comment\r
	162	// TODO: RemainingDevicePath - add argument and description to function comment\r
	163	{\r
	164	EFI_STATUS Status;\r
	165	CIRRUS_LOGIC_5430_PRIVATE_DATA *Private;\r
	166	\r
	167	//\r
	168	// Allocate Private context data for UGA Draw inteface.\r
	169	//\r
	170	Private = NULL;\r
	171	Private = AllocateZeroPool (sizeof (CIRRUS_LOGIC_5430_PRIVATE_DATA));\r
	172	if (Private == NULL) {\r
	173	Status = EFI_OUT_OF_RESOURCES;\r
	174	goto Error;\r
	175	}\r
	176	\r
	177	//\r
	178	// Set up context record\r
	179	//\r
	180	Private->Signature = CIRRUS_LOGIC_5430_PRIVATE_DATA_SIGNATURE;\r
	181	Private->Handle = Controller;\r
	182	\r
	183	//\r
	184	// Open PCI I/O Protocol\r
	185	//\r
	186	Status = gBS->OpenProtocol (\r
	187	Private->Handle,\r
	188	&gEfiPciIoProtocolGuid,\r
	189	(VOID **) &Private->PciIo,\r
	190	This->DriverBindingHandle,\r
	191	Private->Handle,\r
	192	EFI_OPEN_PROTOCOL_BY_DRIVER\r
	193	);\r
	194	if (EFI_ERROR (Status)) {\r
	195	goto Error;\r
	196	}\r
	197	\r
	198	Status = Private->PciIo->Attributes (\r
	199	Private->PciIo,\r
	200	EfiPciIoAttributeOperationEnable,\r
	201	EFI_PCI_DEVICE_ENABLE \| EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY \| EFI_PCI_IO_ATTRIBUTE_VGA_IO,\r
	202	NULL\r
	203	);\r
	204	if (EFI_ERROR (Status)) {\r
	205	goto Error;\r
	206	}\r
	207	\r
	208	//\r
	209	// Start the UGA Draw software stack.\r
	210	//\r
	211	Status = CirrusLogic5430UgaDrawConstructor (Private);\r
	212	if (EFI_ERROR (Status)) {\r
	213	goto Error;\r
	214	}\r
	215	\r
	216	//\r
	217	// Publish the UGA Draw interface to the world\r
	218	//\r
	219	Status = gBS->InstallMultipleProtocolInterfaces (\r
	220	&Private->Handle,\r
	221	&gEfiUgaDrawProtocolGuid,\r
	222	&Private->UgaDraw,\r
	223	NULL\r
	224	);\r
	225	\r
	226	Error:\r
	227	if (EFI_ERROR (Status)) {\r
	228	if (Private) {\r
	229	if (Private->PciIo) {\r
	230	Private->PciIo->Attributes (\r
	231	Private->PciIo,\r
	232	EfiPciIoAttributeOperationDisable,\r
	233	EFI_PCI_DEVICE_ENABLE \| EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY \| EFI_PCI_IO_ATTRIBUTE_VGA_IO,\r
	234	NULL\r
	235	);\r
	236	}\r
	237	}\r
	238	\r
	239	//\r
	240	// Close the PCI I/O Protocol\r
	241	//\r
	242	gBS->CloseProtocol (\r
	243	Private->Handle,\r
	244	&gEfiPciIoProtocolGuid,\r
	245	This->DriverBindingHandle,\r
	246	Private->Handle\r
	247	);\r
	248	if (Private) {\r
	249	gBS->FreePool (Private);\r
	250	}\r
	251	}\r
	252	\r
	253	return Status;\r
	254	}\r
	255	\r
	256	EFI_STATUS\r
	257	EFIAPI\r
	258	CirrusLogic5430ControllerDriverStop (\r
	259	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	260	IN EFI_HANDLE Controller,\r
	261	IN UINTN NumberOfChildren,\r
	262	IN EFI_HANDLE *ChildHandleBuffer\r
	263	)\r
	264	/*++\r
	265	\r
	266	Routine Description:\r
	267	\r
	268	Arguments:\r
	269	\r
	270	Returns:\r
	271	\r
	272	None\r
	273	\r
	274	--*/\r
	275	// TODO: This - add argument and description to function comment\r
	276	// TODO: Controller - add argument and description to function comment\r
	277	// TODO: NumberOfChildren - add argument and description to function comment\r
	278	// TODO: ChildHandleBuffer - add argument and description to function comment\r
	279	// TODO: EFI_SUCCESS - add return value to function comment\r
	280	{\r
	281	EFI_UGA_DRAW_PROTOCOL *UgaDraw;\r
	282	EFI_STATUS Status;\r
	283	CIRRUS_LOGIC_5430_PRIVATE_DATA *Private;\r
	284	\r
	285	Status = gBS->OpenProtocol (\r
	286	Controller,\r
	287	&gEfiUgaDrawProtocolGuid,\r
	288	(VOID **) &UgaDraw,\r
	289	This->DriverBindingHandle,\r
	290	Controller,\r
	291	EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
	292	);\r
	293	if (EFI_ERROR (Status)) {\r
	294	//\r
	295	// If the UGA Draw interface does not exist the driver is not started\r
	296	//\r
	297	return Status;\r
	298	}\r
	299	\r
	300	//\r
	301	// Get our private context information\r
	302	//\r
	303	Private = CIRRUS_LOGIC_5430_PRIVATE_DATA_FROM_UGA_DRAW_THIS (UgaDraw);\r
	304	\r
	305	//\r
	306	// Remove the UGA Draw interface from the system\r
	307	//\r
	308	Status = gBS->UninstallMultipleProtocolInterfaces (\r
	309	Private->Handle,\r
	310	&gEfiUgaDrawProtocolGuid,\r
	311	&Private->UgaDraw,\r
	312	NULL\r
	313	);\r
	314	if (EFI_ERROR (Status)) {\r
	315	return Status;\r
	316	}\r
	317	\r
	318	//\r
	319	// Shutdown the hardware\r
	320	//\r
	321	CirrusLogic5430UgaDrawDestructor (Private);\r
	322	\r
	323	Private->PciIo->Attributes (\r
	324	Private->PciIo,\r
	325	EfiPciIoAttributeOperationDisable,\r
	326	EFI_PCI_DEVICE_ENABLE \| EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY \| EFI_PCI_IO_ATTRIBUTE_VGA_IO,\r
	327	NULL\r
	328	);\r
	329	\r
	330	//\r
	331	// Close the PCI I/O Protocol\r
	332	//\r
	333	gBS->CloseProtocol (\r
	334	Controller,\r
	335	&gEfiPciIoProtocolGuid,\r
	336	This->DriverBindingHandle,\r
	337	Controller\r
	338	);\r
	339	\r
	340	//\r
	341	// Free our instance data\r
	342	//\r
	343	gBS->FreePool (Private);\r
	344	\r
	345	return EFI_SUCCESS;\r
	346	}\r