[mirror_edk2.git] / PcAtChipsetPkg / IsaAcpiDxe / PcatIsaAcpi.c

/** @file\r
  EFI PCAT ISA ACPI Driver for a Generic PC Platform\r
\r
  Copyright (c) 2006, 2009, 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
**/\r
\r
#include "PcatIsaAcpi.h"\r
\r
//\r
//  PcatIsaAcpi Driver Binding Protocol\r
//\r
EFI_DRIVER_BINDING_PROTOCOL gPcatIsaAcpiDriverBinding = {\r
  PcatIsaAcpiDriverBindingSupported,\r
  PcatIsaAcpiDriverBindingStart,\r
  PcatIsaAcpiDriverBindingStop,\r
  0xa,\r
  NULL,\r
  NULL\r
};\r
\r
EFI_STATUS\r
EFIAPI\r
PcatIsaAcpiDriverEntryPoint (\r
  IN EFI_HANDLE        ImageHandle,\r
  IN EFI_SYSTEM_TABLE  *SystemTable\r
  )\r
/*++\r
  \r
  Routine Description:\r
    the entry point of the PcatIsaAcpi driver\r
  \r
  Arguments:\r
  \r
  Returns:\r
    \r
--*/                \r
{\r
  return EfiLibInstallDriverBindingComponentName2 (\r
           ImageHandle, \r
           SystemTable, \r
           &gPcatIsaAcpiDriverBinding,\r
           ImageHandle,\r
           &gPcatIsaAcpiComponentName,\r
           &gPcatIsaAcpiComponentName2\r
           );\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
PcatIsaAcpiDriverBindingSupported (\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
  ControllerDriver Protocol Method\r
\r
Arguments:\r
\r
Returns:\r
\r
--*/\r
{\r
  EFI_STATUS           Status;\r
  EFI_PCI_IO_PROTOCOL  *PciIo;\r
  PCI_TYPE00           Pci;\r
\r
  //\r
  // Get PciIo protocol instance\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
  Status = PciIo->Pci.Read (\r
                    PciIo,\r
                    EfiPciIoWidthUint32,\r
                    0,\r
                    sizeof(Pci) / sizeof(UINT32), \r
                    &Pci);\r
\r
  if (!EFI_ERROR (Status)) {\r
    Status = EFI_UNSUPPORTED;\r
    if ((Pci.Hdr.Command & 0x03) == 0x03) {\r
      if (Pci.Hdr.ClassCode[2] == PCI_CLASS_BRIDGE) {\r
        //\r
        // See if this is a standard PCI to ISA Bridge from the Base Code and Class Code\r
        //\r
        if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA) {\r
          Status = EFI_SUCCESS;\r
        } \r
\r
        //\r
        // See if this is an Intel PCI to ISA bridge in Positive Decode Mode\r
        //\r
        if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA_PDECODE &&\r
            Pci.Hdr.VendorId == 0x8086 && \r
            (Pci.Hdr.DeviceId & 0xF000) == 0x7000) {\r
          Status = EFI_SUCCESS;\r
        }\r
      } \r
    }\r
  }\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
PcatIsaAcpiDriverBindingStart (\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
  Install EFI_ISA_ACPI_PROTOCOL\r
\r
Arguments:\r
\r
Returns:\r
\r
--*/\r
{\r
  EFI_STATUS           Status;\r
  EFI_PCI_IO_PROTOCOL  *PciIo;\r
  PCAT_ISA_ACPI_DEV    *PcatIsaAcpiDev;\r
    \r
  PcatIsaAcpiDev = NULL;\r
  //\r
  // Open the PCI I/O Protocol Interface\r
  //\r
  PciIo = NULL;\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
    goto Done;\r
  }\r
\r
  Status = PciIo->Attributes (\r
                    PciIo, \r
                    EfiPciIoAttributeOperationEnable, \r
                    EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO, \r
                    NULL \r
                    );\r
  if (EFI_ERROR (Status)) {\r
    goto Done;\r
  }\r
  \r
  //\r
  // Allocate memory for the PCAT ISA ACPI Device structure\r
  //\r
  PcatIsaAcpiDev = NULL;\r
  Status = gBS->AllocatePool (\r
                  EfiBootServicesData,\r
                  sizeof(PCAT_ISA_ACPI_DEV),\r
                  (VOID**)&PcatIsaAcpiDev\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    goto Done;\r
  }\r
\r
  //\r
  // Initialize the PCAT ISA ACPI Device structure\r
  //\r
  PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;\r
  PcatIsaAcpiDev->Handle    = Controller;\r
  PcatIsaAcpiDev->PciIo     = PciIo;\r
  \r
  //\r
  // IsaAcpi interface\r
  //\r
  (PcatIsaAcpiDev->IsaAcpi).DeviceEnumerate  = IsaDeviceEnumerate;\r
  (PcatIsaAcpiDev->IsaAcpi).SetPower         = IsaDeviceSetPower;\r
  (PcatIsaAcpiDev->IsaAcpi).GetCurResource   = IsaGetCurrentResource;\r
  (PcatIsaAcpiDev->IsaAcpi).GetPosResource   = IsaGetPossibleResource;\r
  (PcatIsaAcpiDev->IsaAcpi).SetResource      = IsaSetResource;\r
  (PcatIsaAcpiDev->IsaAcpi).EnableDevice     = IsaEnableDevice;\r
  (PcatIsaAcpiDev->IsaAcpi).InitDevice       = IsaInitDevice;\r
  (PcatIsaAcpiDev->IsaAcpi).InterfaceInit    = IsaInterfaceInit;\r
    \r
  //\r
  // Install the ISA ACPI Protocol interface\r
  //\r
  Status = gBS->InstallMultipleProtocolInterfaces (\r
                  &Controller,\r
                  &gEfiIsaAcpiProtocolGuid, &PcatIsaAcpiDev->IsaAcpi,\r
                  NULL\r
                  );\r
\r
Done:\r
  if (EFI_ERROR (Status)) {\r
    if (PciIo) {\r
      PciIo->Attributes (\r
               PciIo, \r
               EfiPciIoAttributeOperationDisable, \r
               EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,\r
               NULL \r
               );\r
    }\r
    gBS->CloseProtocol (\r
           Controller, \r
           &gEfiPciIoProtocolGuid, \r
           This->DriverBindingHandle, \r
           Controller\r
           );\r
    if (PcatIsaAcpiDev != NULL) {\r
      gBS->FreePool (PcatIsaAcpiDev);\r
    }\r
    return Status;\r
  }\r
          \r
  return EFI_SUCCESS;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
PcatIsaAcpiDriverBindingStop (\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
--*/\r
{\r
  EFI_STATUS             Status;\r
  EFI_ISA_ACPI_PROTOCOL  *IsaAcpi;\r
  PCAT_ISA_ACPI_DEV      *PcatIsaAcpiDev;\r
  \r
  //\r
  // Get the ISA ACPI Protocol Interface\r
  // \r
  Status = gBS->OpenProtocol (\r
                  Controller, \r
                  &gEfiIsaAcpiProtocolGuid, \r
                  (VOID**)&IsaAcpi,\r
                  This->DriverBindingHandle,   \r
                  Controller,   \r
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  //\r
  // Get the PCAT ISA ACPI Device structure from the ISA ACPI Protocol\r
  //\r
  PcatIsaAcpiDev = PCAT_ISA_ACPI_DEV_FROM_THIS (IsaAcpi);\r
\r
  PcatIsaAcpiDev->PciIo->Attributes (\r
                           PcatIsaAcpiDev->PciIo, \r
                           EfiPciIoAttributeOperationDisable, \r
                           EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_ISA_IO | EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,\r
                           NULL \r
                           );\r
 \r
  //\r
  // Uninstall protocol interface: EFI_ISA_ACPI_PROTOCOL\r
  //\r
  Status = gBS->UninstallProtocolInterface (\r
                  Controller,\r
                  &gEfiIsaAcpiProtocolGuid, &PcatIsaAcpiDev->IsaAcpi\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  gBS->CloseProtocol (\r
         Controller, \r
         &gEfiPciIoProtocolGuid, \r
         This->DriverBindingHandle, \r
         Controller\r
         );\r
  \r
  gBS->FreePool (PcatIsaAcpiDev);\r
  \r
  return EFI_SUCCESS;\r
}\r
Commit	Line	Data
c860b463	1	/** @file\r
c860b463	2	EFI PCAT ISA ACPI Driver for a Generic PC Platform\r
c69dd9df	3	\r
c860b463	4	Copyright (c) 2006, 2009, Intel Corporation \r
	5	All rights reserved. This program and the accompanying materials\r
	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
c69dd9df	9	\r
c860b463	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
c860b463	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
c69dd9df	12	\r
c860b463	13	**/\r
c69dd9df	14	\r
	15	#include "PcatIsaAcpi.h"\r
	16	\r
	17	//\r
	18	// PcatIsaAcpi Driver Binding Protocol\r
	19	//\r
	20	EFI_DRIVER_BINDING_PROTOCOL gPcatIsaAcpiDriverBinding = {\r
	21	PcatIsaAcpiDriverBindingSupported,\r
	22	PcatIsaAcpiDriverBindingStart,\r
	23	PcatIsaAcpiDriverBindingStop,\r
	24	0xa,\r
	25	NULL,\r
	26	NULL\r
	27	};\r
	28	\r
	29	EFI_STATUS\r
	30	EFIAPI\r
	31	PcatIsaAcpiDriverEntryPoint (\r
	32	IN EFI_HANDLE ImageHandle,\r
	33	IN EFI_SYSTEM_TABLE *SystemTable\r
	34	)\r
	35	/*++\r
	36	\r
	37	Routine Description:\r
	38	the entry point of the PcatIsaAcpi driver\r
	39	\r
	40	Arguments:\r
	41	\r
	42	Returns:\r
	43	\r
	44	--*/ \r
	45	{\r
	46	return EfiLibInstallDriverBindingComponentName2 (\r
	47	ImageHandle, \r
	48	SystemTable, \r
	49	&gPcatIsaAcpiDriverBinding,\r
	50	ImageHandle,\r
	51	&gPcatIsaAcpiComponentName,\r
	52	&gPcatIsaAcpiComponentName2\r
	53	);\r
	54	}\r
	55	\r
	56	EFI_STATUS\r
	57	EFIAPI\r
	58	PcatIsaAcpiDriverBindingSupported (\r
	59	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	60	IN EFI_HANDLE Controller,\r
	61	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
	62	)\r
	63	/*++\r
	64	\r
	65	Routine Description:\r
	66	\r
	67	ControllerDriver Protocol Method\r
	68	\r
	69	Arguments:\r
	70	\r
	71	Returns:\r
	72	\r
	73	--*/\r
	74	{\r
	75	EFI_STATUS Status;\r
	76	EFI_PCI_IO_PROTOCOL *PciIo;\r
	77	PCI_TYPE00 Pci;\r
78	\r
79	//\r
80	// Get PciIo protocol instance\r
81	// \r
82	Status = gBS->OpenProtocol (\r
83	Controller, \r
84	&gEfiPciIoProtocolGuid, \r
9c83c97a	85	(VOID**)&PciIo,\r
c69dd9df	86	This->DriverBindingHandle,\r
	87	Controller,\r
	88	EFI_OPEN_PROTOCOL_BY_DRIVER\r
	89	);\r
	90	if (EFI_ERROR(Status)) {\r
	91	return Status;\r
	92	}\r
	93	\r
	94	Status = PciIo->Pci.Read (\r
	95	PciIo,\r
	96	EfiPciIoWidthUint32,\r
	97	0,\r
	98	sizeof(Pci) / sizeof(UINT32), \r
	99	&Pci);\r
c860b463	100	\r
c69dd9df	101	if (!EFI_ERROR (Status)) {\r
	102	Status = EFI_UNSUPPORTED;\r
	103	if ((Pci.Hdr.Command & 0x03) == 0x03) {\r
	104	if (Pci.Hdr.ClassCode[2] == PCI_CLASS_BRIDGE) {\r
	105	//\r
	106	// See if this is a standard PCI to ISA Bridge from the Base Code and Class Code\r
	107	//\r
bc14bdb3	108	if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA) {\r
c69dd9df	109	Status = EFI_SUCCESS;\r
	110	} \r
	111	\r
	112	//\r
	113	// See if this is an Intel PCI to ISA bridge in Positive Decode Mode\r
	114	//\r
bc14bdb3	115	if (Pci.Hdr.ClassCode[1] == PCI_CLASS_BRIDGE_ISA_PDECODE &&\r
c69dd9df	116	Pci.Hdr.VendorId == 0x8086 && \r
c860b463	117	(Pci.Hdr.DeviceId & 0xF000) == 0x7000) {\r
c69dd9df	118	Status = EFI_SUCCESS;\r
	119	}\r
	120	} \r
	121	}\r
	122	}\r
	123	\r
	124	gBS->CloseProtocol (\r
	125	Controller, \r
	126	&gEfiPciIoProtocolGuid, \r
	127	This->DriverBindingHandle, \r
	128	Controller \r
	129	);\r
	130	\r
	131	return Status;\r
	132	}\r
	133	\r
	134	EFI_STATUS\r
	135	EFIAPI\r
	136	PcatIsaAcpiDriverBindingStart (\r
	137	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	138	IN EFI_HANDLE Controller,\r
	139	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
	140	)\r
	141	/*++\r
	142	\r
	143	Routine Description:\r
	144	Install EFI_ISA_ACPI_PROTOCOL\r
	145	\r
	146	Arguments:\r
	147	\r
	148	Returns:\r
	149	\r
	150	--*/\r
	151	{\r
	152	EFI_STATUS Status;\r
	153	EFI_PCI_IO_PROTOCOL *PciIo;\r
	154	PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;\r
	155	\r
	156	PcatIsaAcpiDev = NULL;\r
	157	//\r
	158	// Open the PCI I/O Protocol Interface\r
	159	//\r
	160	PciIo = NULL;\r
	161	Status = gBS->OpenProtocol (\r
	162	Controller, \r
	163	&gEfiPciIoProtocolGuid, \r
9c83c97a	164	(VOID**)&PciIo,\r
c69dd9df	165	This->DriverBindingHandle, \r
	166	Controller, \r
	167	EFI_OPEN_PROTOCOL_BY_DRIVER \r
	168	);\r
	169	if (EFI_ERROR (Status)) {\r
	170	goto Done;\r
	171	}\r
	172	\r
	173	Status = PciIo->Attributes (\r
	174	PciIo, \r
	175	EfiPciIoAttributeOperationEnable, \r
	176	EFI_PCI_DEVICE_ENABLE \| EFI_PCI_IO_ATTRIBUTE_ISA_IO \| EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO, \r
	177	NULL \r
	178	);\r
	179	if (EFI_ERROR (Status)) {\r
	180	goto Done;\r
	181	}\r
	182	\r
	183	//\r
	184	// Allocate memory for the PCAT ISA ACPI Device structure\r
	185	//\r
	186	PcatIsaAcpiDev = NULL;\r
	187	Status = gBS->AllocatePool (\r
	188	EfiBootServicesData,\r
	189	sizeof(PCAT_ISA_ACPI_DEV),\r
9c83c97a	190	(VOID**)&PcatIsaAcpiDev\r
c69dd9df	191	);\r
	192	if (EFI_ERROR (Status)) {\r
	193	goto Done;\r
	194	}\r
	195	\r
	196	//\r
	197	// Initialize the PCAT ISA ACPI Device structure\r
	198	//\r
	199	PcatIsaAcpiDev->Signature = PCAT_ISA_ACPI_DEV_SIGNATURE;\r
	200	PcatIsaAcpiDev->Handle = Controller;\r
	201	PcatIsaAcpiDev->PciIo = PciIo;\r
	202	\r
	203	//\r
	204	// IsaAcpi interface\r
	205	//\r
	206	(PcatIsaAcpiDev->IsaAcpi).DeviceEnumerate = IsaDeviceEnumerate;\r
	207	(PcatIsaAcpiDev->IsaAcpi).SetPower = IsaDeviceSetPower;\r
	208	(PcatIsaAcpiDev->IsaAcpi).GetCurResource = IsaGetCurrentResource;\r
	209	(PcatIsaAcpiDev->IsaAcpi).GetPosResource = IsaGetPossibleResource;\r
	210	(PcatIsaAcpiDev->IsaAcpi).SetResource = IsaSetResource;\r
	211	(PcatIsaAcpiDev->IsaAcpi).EnableDevice = IsaEnableDevice;\r
	212	(PcatIsaAcpiDev->IsaAcpi).InitDevice = IsaInitDevice;\r
	213	(PcatIsaAcpiDev->IsaAcpi).InterfaceInit = IsaInterfaceInit;\r
	214	\r
	215	//\r
	216	// Install the ISA ACPI Protocol interface\r
	217	//\r
	218	Status = gBS->InstallMultipleProtocolInterfaces (\r
	219	&Controller,\r
	220	&gEfiIsaAcpiProtocolGuid, &PcatIsaAcpiDev->IsaAcpi,\r
	221	NULL\r
	222	);\r
	223	\r
	224	Done:\r
	225	if (EFI_ERROR (Status)) {\r
	226	if (PciIo) {\r
	227	PciIo->Attributes (\r
	228	PciIo, \r
	229	EfiPciIoAttributeOperationDisable, \r
	230	EFI_PCI_DEVICE_ENABLE \| EFI_PCI_IO_ATTRIBUTE_ISA_IO \| EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,\r
	231	NULL \r
	232	);\r
	233	}\r
	234	gBS->CloseProtocol (\r
	235	Controller, \r
	236	&gEfiPciIoProtocolGuid, \r
	237	This->DriverBindingHandle, \r
	238	Controller\r
	239	);\r
	240	if (PcatIsaAcpiDev != NULL) {\r
	241	gBS->FreePool (PcatIsaAcpiDev);\r
	242	}\r
	243	return Status;\r
	244	}\r
	245	\r
	246	return EFI_SUCCESS;\r
	247	}\r
	248	\r
	249	EFI_STATUS\r
	250	EFIAPI\r
	251	PcatIsaAcpiDriverBindingStop (\r
	252	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	253	IN EFI_HANDLE Controller,\r
	254	IN UINTN NumberOfChildren,\r
255	IN EFI_HANDLE *ChildHandleBuffer\r
256	)\r
257	/*++\r
258	\r
259	Routine Description:\r
260	\r
261	Arguments:\r
262	\r
263	Returns:\r
264	\r
265	--*/\r
266	{\r
267	EFI_STATUS Status;\r
268	EFI_ISA_ACPI_PROTOCOL *IsaAcpi;\r
269	PCAT_ISA_ACPI_DEV *PcatIsaAcpiDev;\r
270	\r
271	//\r
272	// Get the ISA ACPI Protocol Interface\r
273	// \r
274	Status = gBS->OpenProtocol (\r
275	Controller, \r
276	&gEfiIsaAcpiProtocolGuid, \r
9c83c97a	277	(VOID**)&IsaAcpi,\r
c69dd9df	278	This->DriverBindingHandle, \r
	279	Controller, \r
	280	EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
	281	);\r
	282	if (EFI_ERROR (Status)) {\r
	283	return Status;\r
	284	}\r
	285	\r
	286	//\r
	287	// Get the PCAT ISA ACPI Device structure from the ISA ACPI Protocol\r
	288	//\r
	289	PcatIsaAcpiDev = PCAT_ISA_ACPI_DEV_FROM_THIS (IsaAcpi);\r
	290	\r
	291	PcatIsaAcpiDev->PciIo->Attributes (\r
	292	PcatIsaAcpiDev->PciIo, \r
	293	EfiPciIoAttributeOperationDisable, \r
	294	EFI_PCI_DEVICE_ENABLE \| EFI_PCI_IO_ATTRIBUTE_ISA_IO \| EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO,\r
	295	NULL \r
	296	);\r
	297	\r
	298	//\r
	299	// Uninstall protocol interface: EFI_ISA_ACPI_PROTOCOL\r
	300	//\r
	301	Status = gBS->UninstallProtocolInterface (\r
	302	Controller,\r
	303	&gEfiIsaAcpiProtocolGuid, &PcatIsaAcpiDev->IsaAcpi\r
	304	);\r
	305	if (EFI_ERROR (Status)) {\r
	306	return Status;\r
	307	}\r
	308	\r
	309	gBS->CloseProtocol (\r
	310	Controller, \r
	311	&gEfiPciIoProtocolGuid, \r
	312	This->DriverBindingHandle, \r
	313	Controller\r
	314	);\r
	315	\r
	316	gBS->FreePool (PcatIsaAcpiDev);\r
	317	\r
	318	return EFI_SUCCESS;\r
	319	}\r