[mirror_edk2.git] / IntelFrameworkModulePkg / Bus / Isa / IsaIoDxe / IsaDriver.c

/** @file\r
  IsaIo UEFI driver.\r
\r
  Produce an instance of the ISA I/O Protocol for every SIO controller.\r
\r
Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>\r
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 "IsaDriver.h"\r
\r
//\r
// IsaIo Driver Global Variables\r
//\r
EFI_DRIVER_BINDING_PROTOCOL gIsaIoDriver = {\r
  IsaIoDriverSupported,\r
  IsaIoDriverStart,\r
  IsaIoDriverStop,\r
  0xa,\r
  NULL,\r
  NULL\r
};\r
\r
/**\r
  The main entry point for the IsaIo driver.\r
\r
  @param[in] ImageHandle        The firmware allocated handle for the EFI image.\r
  @param[in] SystemTable        A pointer to the EFI System Table.\r
\r
  @retval EFI_SUCCESS           The entry point is executed successfully.\r
  @retval EFI_OUT_OF_RESOURCES  There was not enough memory in pool to install all the protocols.\r
**/\r
EFI_STATUS\r
EFIAPI\r
InitializeIsaIo (\r
  IN EFI_HANDLE           ImageHandle,\r
  IN EFI_SYSTEM_TABLE     *SystemTable\r
  )\r
{\r
  EFI_STATUS              Status;\r
\r
  //\r
  // Install driver model protocol(s).\r
  //\r
  Status = EfiLibInstallDriverBindingComponentName2 (\r
             ImageHandle,\r
             SystemTable,\r
             &gIsaIoDriver,\r
             ImageHandle,\r
             &gIsaIoComponentName,\r
             &gIsaIoComponentName2\r
             );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  return Status;\r
}\r
\r
/**\r
  Tests to see if a controller can be managed by the IsaIo driver.\r
\r
  @param[in] This                 A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
  @param[in] Controller           The handle of the controller to test.\r
  @param[in] RemainingDevicePath  A pointer to the remaining portion of a device path.\r
\r
  @retval EFI_SUCCESS             The device is supported by this driver.\r
  @retval EFI_ALREADY_STARTED     The device is already being managed by this driver.\r
  @retval EFI_ACCESS_DENIED       The device is already being managed by a different driver\r
                                  or an application that requires exclusive access.\r
  @retval EFI_UNSUPPORTED         The device is is not supported by this driver.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IsaIoDriverSupported (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath OPTIONAL\r
  )\r
{\r
  EFI_STATUS                Status;\r
  EFI_DEVICE_PATH_PROTOCOL  *DevicePath;\r
  EFI_SIO_PROTOCOL          *Sio;\r
  EFI_HANDLE                PciHandle;\r
\r
  //\r
  // Try to open EFI DEVICE PATH protocol on the controller\r
  //\r
  Status = gBS->OpenProtocol (\r
                  Controller,\r
                  &gEfiDevicePathProtocolGuid,\r
                  (VOID **) &DevicePath,\r
                  This->DriverBindingHandle,\r
                  Controller,\r
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
                  );\r
\r
  if (!EFI_ERROR (Status)) {\r
    //\r
    // Get the PciIo protocol from its parent controller.\r
    //\r
    Status = gBS->LocateDevicePath (&gEfiPciIoProtocolGuid, &DevicePath, &PciHandle);\r
  }\r
\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  //\r
  // Try to open the Super IO protocol on the controller\r
  //\r
  Status = gBS->OpenProtocol (\r
                  Controller,\r
                  &gEfiSioProtocolGuid,\r
                  (VOID **) &Sio,\r
                  This->DriverBindingHandle,\r
                  Controller,\r
                  EFI_OPEN_PROTOCOL_BY_DRIVER\r
                  );\r
  if (!EFI_ERROR (Status)) {\r
    gBS->CloseProtocol (\r
           Controller,\r
           &gEfiSioProtocolGuid,\r
           This->DriverBindingHandle,\r
           Controller\r
           );\r
  }\r
\r
  return Status;\r
}\r
\r
/**\r
  Start this driver on ControllerHandle.\r
\r
  The Start() function is designed to be invoked from the EFI boot service ConnectController().\r
  As a result, much of the error checking on the parameters to Start() has been moved into this\r
  common boot service. It is legal to call Start() from other locations, but the following calling\r
  restrictions must be followed or the system behavior will not be deterministic.\r
  1. ControllerHandle must be a valid EFI_HANDLE.\r
  2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned\r
     EFI_DEVICE_PATH_PROTOCOL.\r
  3. Prior to calling Start(), the Supported() function for the driver specified by This must\r
     have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.\r
\r
  @param[in]  This                 A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
  @param[in]  ControllerHandle     The handle of the controller to start. This handle\r
                                   must support a protocol interface that supplies\r
                                   an I/O abstraction to the driver.\r
  @param[in]  RemainingDevicePath  A pointer to the remaining portion of a device path.\r
                                   This parameter is ignored by device drivers, and is optional for bus drivers.\r
\r
  @retval EFI_SUCCESS              The device was started.\r
  @retval EFI_DEVICE_ERROR         The device could not be started due to a device error.\r
                                   Currently not implemented.\r
  @retval EFI_OUT_OF_RESOURCES     The request could not be completed due to a lack of resources.\r
  @retval Others                   The driver failded to start the device.\r
**/\r
EFI_STATUS\r
EFIAPI\r
IsaIoDriverStart (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath OPTIONAL\r
  )\r
{\r
  EFI_STATUS                            Status;\r
  EFI_PCI_IO_PROTOCOL                   *PciIo;\r
  EFI_DEVICE_PATH_PROTOCOL              *DevicePath;\r
  EFI_HANDLE                            PciHandle;\r
  EFI_SIO_PROTOCOL                      *Sio;\r
  ACPI_RESOURCE_HEADER_PTR              Resources;\r
  EFI_DEVICE_PATH_PROTOCOL              *TempDevicePath;\r
  ISA_IO_DEVICE                         *IsaIoDevice;\r
\r
  PciIo = NULL;\r
  Sio   = NULL;\r
\r
  //\r
  // Open Device Path Protocol\r
  //\r
  Status = gBS->OpenProtocol (\r
                  Controller,\r
                  &gEfiDevicePathProtocolGuid,\r
                  (VOID **) &DevicePath,\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 PciIo protocol from its parent controller.\r
  //\r
  TempDevicePath = DevicePath;\r
  Status = gBS->LocateDevicePath (&gEfiPciIoProtocolGuid, &TempDevicePath, &PciHandle);\r
  if (!EFI_ERROR (Status)) {\r
    Status = gBS->HandleProtocol (PciHandle, &gEfiPciIoProtocolGuid, (VOID **) &PciIo);\r
    ASSERT_EFI_ERROR (Status);\r
\r
    //\r
    // Open Super IO Protocol\r
    //\r
    Status = gBS->OpenProtocol (\r
                    Controller,\r
                    &gEfiSioProtocolGuid,\r
                    (VOID **) &Sio,\r
                    This->DriverBindingHandle,\r
                    Controller,\r
                    EFI_OPEN_PROTOCOL_BY_DRIVER\r
                    );\r
  }\r
\r
  if (EFI_ERROR (Status)) {\r
    //\r
    // Fail due to LocateDevicePath(...) or OpenProtocol(Sio, BY_DRIVER)\r
    //\r
    return Status;\r
  }\r
\r
  Status = Sio->GetResources (Sio, &Resources);\r
  ASSERT_EFI_ERROR (Status);\r
\r
  IsaIoDevice = AllocatePool (sizeof (ISA_IO_DEVICE));\r
  ASSERT (IsaIoDevice != NULL);\r
\r
  IsaIoDevice->Signature = ISA_IO_DEVICE_SIGNATURE;\r
  IsaIoDevice->PciIo     = PciIo;\r
\r
  //\r
  // Initialize the ISA I/O instance structure\r
  //\r
  InitializeIsaIoInstance (IsaIoDevice, DevicePath, Resources);\r
\r
  //\r
  // Install the ISA I/O protocol on the Controller handle\r
  //\r
  Status = gBS->InstallMultipleProtocolInterfaces (\r
                  &Controller,\r
                  &gEfiIsaIoProtocolGuid,\r
                  &IsaIoDevice->IsaIo,\r
                  NULL\r
                  );\r
  ASSERT_EFI_ERROR (Status);\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  Stop this driver on ControllerHandle.\r
\r
  The Stop() function is designed to be invoked from the EFI boot service DisconnectController().\r
  As a result, much of the error checking on the parameters to Stop() has been moved\r
  into this common boot service. It is legal to call Stop() from other locations,\r
  but the following calling restrictions must be followed or the system behavior will not be deterministic.\r
  1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this\r
     same driver's Start() function.\r
  2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid\r
     EFI_HANDLE. In addition, all of these handles must have been created in this driver's\r
     Start() function, and the Start() function must have called OpenProtocol() on\r
     ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r
\r
  @param[in]  This              A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
  @param[in]  ControllerHandle  A handle to the device being stopped. The handle must\r
                                support a bus specific I/O protocol for the driver\r
                                to use to stop the device.\r
  @param[in]  NumberOfChildren  The number of child device handles in ChildHandleBuffer.\r
  @param[in]  ChildHandleBuffer An array of child handles to be freed. May be NULL\r
                                if NumberOfChildren is 0.\r
\r
  @retval EFI_SUCCESS           The device was stopped.\r
  @retval EFI_DEVICE_ERROR      The device could not be stopped due to a device error.\r
**/\r
EFI_STATUS\r
EFIAPI\r
IsaIoDriverStop (\r
  IN  EFI_DRIVER_BINDING_PROTOCOL  * This,\r
  IN  EFI_HANDLE                   Controller,\r
  IN  UINTN                        NumberOfChildren,\r
  IN  EFI_HANDLE                   * ChildHandleBuffer OPTIONAL\r
  )\r
{\r
  EFI_STATUS                          Status;\r
  ISA_IO_DEVICE                       *IsaIoDevice;\r
  EFI_ISA_IO_PROTOCOL                 *IsaIo;\r
\r
  Status = gBS->OpenProtocol (\r
                  Controller,\r
                  &gEfiIsaIoProtocolGuid,\r
                  (VOID **) &IsaIo,\r
                  This->DriverBindingHandle,\r
                  Controller,\r
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
                  );\r
  if (EFI_ERROR (Status)) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (IsaIo);\r
\r
  Status = gBS->UninstallMultipleProtocolInterfaces (\r
                  Controller,\r
                  &gEfiIsaIoProtocolGuid,\r
                  &IsaIoDevice->IsaIo,\r
                  NULL\r
                  );\r
  if (!EFI_ERROR (Status)) {\r
    Status = gBS->CloseProtocol (\r
                    Controller,\r
                    &gEfiSioProtocolGuid,\r
                    This->DriverBindingHandle,\r
                    Controller\r
                    );\r
    FreePool (IsaIoDevice->IsaIo.ResourceList);\r
    FreePool (IsaIoDevice);\r
  }\r
\r
   return Status;\r
}\r
Commit	Line	Data
558be455 RN	1	/** @file\r
	2	IsaIo UEFI driver.\r
	3	\r
	4	Produce an instance of the ISA I/O Protocol for every SIO controller.\r
0a6f4824 LG	5	\r
0a6f4824 LG	6	Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>\r
558be455 RN	7	This program and the accompanying materials\r
	8	are licensed and made available under the terms and conditions of the BSD License\r
	9	which accompanies this distribution. The full text of the license may be found at\r
	10	http://opensource.org/licenses/bsd-license.php\r
	11	\r
	12	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	13	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	14	\r
	15	**/\r
	16	\r
	17	#include "IsaDriver.h"\r
	18	\r
	19	//\r
	20	// IsaIo Driver Global Variables\r
	21	//\r
	22	EFI_DRIVER_BINDING_PROTOCOL gIsaIoDriver = {\r
	23	IsaIoDriverSupported,\r
	24	IsaIoDriverStart,\r
	25	IsaIoDriverStop,\r
	26	0xa,\r
	27	NULL,\r
	28	NULL\r
	29	};\r
	30	\r
	31	/**\r
	32	The main entry point for the IsaIo driver.\r
	33	\r
0a6f4824	34	@param[in] ImageHandle The firmware allocated handle for the EFI image.\r
558be455	35	@param[in] SystemTable A pointer to the EFI System Table.\r
0a6f4824	36	\r
558be455 RN	37	@retval EFI_SUCCESS The entry point is executed successfully.\r
	38	@retval EFI_OUT_OF_RESOURCES There was not enough memory in pool to install all the protocols.\r
	39	**/\r
	40	EFI_STATUS\r
	41	EFIAPI\r
	42	InitializeIsaIo (\r
	43	IN EFI_HANDLE ImageHandle,\r
	44	IN EFI_SYSTEM_TABLE *SystemTable\r
	45	)\r
	46	{\r
	47	EFI_STATUS Status;\r
	48	\r
	49	//\r
	50	// Install driver model protocol(s).\r
	51	//\r
	52	Status = EfiLibInstallDriverBindingComponentName2 (\r
	53	ImageHandle,\r
	54	SystemTable,\r
	55	&gIsaIoDriver,\r
	56	ImageHandle,\r
	57	&gIsaIoComponentName,\r
	58	&gIsaIoComponentName2\r
	59	);\r
	60	ASSERT_EFI_ERROR (Status);\r
	61	\r
	62	return Status;\r
	63	}\r
	64	\r
0a6f4824	65	/**\r
558be455 RN	66	Tests to see if a controller can be managed by the IsaIo driver.\r
558be455 RN	67	\r
0a6f4824	68	@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
558be455 RN	69	@param[in] Controller The handle of the controller to test.\r
558be455 RN	70	@param[in] RemainingDevicePath A pointer to the remaining portion of a device path.\r
0a6f4824	71	\r
558be455 RN	72	@retval EFI_SUCCESS The device is supported by this driver.\r
558be455 RN	73	@retval EFI_ALREADY_STARTED The device is already being managed by this driver.\r
0a6f4824	74	@retval EFI_ACCESS_DENIED The device is already being managed by a different driver\r
558be455 RN	75	or an application that requires exclusive access.\r
	76	@retval EFI_UNSUPPORTED The device is is not supported by this driver.\r
	77	\r
	78	**/\r
	79	EFI_STATUS\r
	80	EFIAPI\r
	81	IsaIoDriverSupported (\r
	82	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	83	IN EFI_HANDLE Controller,\r
	84	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r
	85	)\r
	86	{\r
	87	EFI_STATUS Status;\r
	88	EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
	89	EFI_SIO_PROTOCOL *Sio;\r
	90	EFI_HANDLE PciHandle;\r
	91	\r
	92	//\r
	93	// Try to open EFI DEVICE PATH protocol on the controller\r
	94	//\r
	95	Status = gBS->OpenProtocol (\r
	96	Controller,\r
	97	&gEfiDevicePathProtocolGuid,\r
	98	(VOID **) &DevicePath,\r
	99	This->DriverBindingHandle,\r
	100	Controller,\r
	101	EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
	102	);\r
	103	\r
	104	if (!EFI_ERROR (Status)) {\r
	105	//\r
	106	// Get the PciIo protocol from its parent controller.\r
	107	//\r
	108	Status = gBS->LocateDevicePath (&gEfiPciIoProtocolGuid, &DevicePath, &PciHandle);\r
558be455 RN	109	}\r
	110	\r
	111	if (EFI_ERROR (Status)) {\r
	112	return Status;\r
	113	}\r
	114	\r
	115	//\r
	116	// Try to open the Super IO protocol on the controller\r
	117	//\r
	118	Status = gBS->OpenProtocol (\r
	119	Controller,\r
	120	&gEfiSioProtocolGuid,\r
	121	(VOID **) &Sio,\r
	122	This->DriverBindingHandle,\r
	123	Controller,\r
	124	EFI_OPEN_PROTOCOL_BY_DRIVER\r
	125	);\r
	126	if (!EFI_ERROR (Status)) {\r
	127	gBS->CloseProtocol (\r
	128	Controller,\r
	129	&gEfiSioProtocolGuid,\r
	130	This->DriverBindingHandle,\r
	131	Controller\r
	132	);\r
	133	}\r
	134	\r
	135	return Status;\r
	136	}\r
	137	\r
	138	/**\r
0a6f4824 LG	139	Start this driver on ControllerHandle.\r
	140	\r
	141	The Start() function is designed to be invoked from the EFI boot service ConnectController().\r
	142	As a result, much of the error checking on the parameters to Start() has been moved into this\r
	143	common boot service. It is legal to call Start() from other locations, but the following calling\r
558be455 RN	144	restrictions must be followed or the system behavior will not be deterministic.\r
	145	1. ControllerHandle must be a valid EFI_HANDLE.\r
	146	2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned\r
	147	EFI_DEVICE_PATH_PROTOCOL.\r
	148	3. Prior to calling Start(), the Supported() function for the driver specified by This must\r
0a6f4824	149	have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.\r
558be455 RN	150	\r
558be455 RN	151	@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
0a6f4824 LG	152	@param[in] ControllerHandle The handle of the controller to start. This handle\r
0a6f4824 LG	153	must support a protocol interface that supplies\r
558be455	154	an I/O abstraction to the driver.\r
0a6f4824	155	@param[in] RemainingDevicePath A pointer to the remaining portion of a device path.\r
558be455 RN	156	This parameter is ignored by device drivers, and is optional for bus drivers.\r
	157	\r
	158	@retval EFI_SUCCESS The device was started.\r
	159	@retval EFI_DEVICE_ERROR The device could not be started due to a device error.\r
	160	Currently not implemented.\r
	161	@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
	162	@retval Others The driver failded to start the device.\r
	163	**/\r
	164	EFI_STATUS\r
	165	EFIAPI\r
	166	IsaIoDriverStart (\r
	167	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	168	IN EFI_HANDLE Controller,\r
	169	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r
	170	)\r
	171	{\r
	172	EFI_STATUS Status;\r
	173	EFI_PCI_IO_PROTOCOL *PciIo;\r
	174	EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
	175	EFI_HANDLE PciHandle;\r
	176	EFI_SIO_PROTOCOL *Sio;\r
	177	ACPI_RESOURCE_HEADER_PTR Resources;\r
12b7f509	178	EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;\r
558be455 RN	179	ISA_IO_DEVICE *IsaIoDevice;\r
	180	\r
	181	PciIo = NULL;\r
	182	Sio = NULL;\r
	183	\r
	184	//\r
	185	// Open Device Path Protocol\r
	186	//\r
	187	Status = gBS->OpenProtocol (\r
	188	Controller,\r
	189	&gEfiDevicePathProtocolGuid,\r
	190	(VOID **) &DevicePath,\r
	191	This->DriverBindingHandle,\r
	192	Controller,\r
	193	EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
	194	);\r
	195	if (EFI_ERROR (Status)) {\r
	196	return Status;\r
	197	}\r
	198	\r
	199	//\r
	200	// Get the PciIo protocol from its parent controller.\r
	201	//\r
12b7f509 RN	202	TempDevicePath = DevicePath;\r
12b7f509 RN	203	Status = gBS->LocateDevicePath (&gEfiPciIoProtocolGuid, &TempDevicePath, &PciHandle);\r
558be455	204	if (!EFI_ERROR (Status)) {\r
f6aa9c1b	205	Status = gBS->HandleProtocol (PciHandle, &gEfiPciIoProtocolGuid, (VOID **) &PciIo);\r
558be455 RN	206	ASSERT_EFI_ERROR (Status);\r
	207	\r
	208	//\r
	209	// Open Super IO Protocol\r
	210	//\r
	211	Status = gBS->OpenProtocol (\r
	212	Controller,\r
	213	&gEfiSioProtocolGuid,\r
	214	(VOID **) &Sio,\r
	215	This->DriverBindingHandle,\r
	216	Controller,\r
	217	EFI_OPEN_PROTOCOL_BY_DRIVER\r
	218	);\r
	219	}\r
	220	\r
	221	if (EFI_ERROR (Status)) {\r
	222	//\r
	223	// Fail due to LocateDevicePath(...) or OpenProtocol(Sio, BY_DRIVER)\r
	224	//\r
	225	return Status;\r
	226	}\r
	227	\r
	228	Status = Sio->GetResources (Sio, &Resources);\r
	229	ASSERT_EFI_ERROR (Status);\r
	230	\r
	231	IsaIoDevice = AllocatePool (sizeof (ISA_IO_DEVICE));\r
	232	ASSERT (IsaIoDevice != NULL);\r
	233	\r
	234	IsaIoDevice->Signature = ISA_IO_DEVICE_SIGNATURE;\r
	235	IsaIoDevice->PciIo = PciIo;\r
	236	\r
	237	//\r
	238	// Initialize the ISA I/O instance structure\r
	239	//\r
	240	InitializeIsaIoInstance (IsaIoDevice, DevicePath, Resources);\r
	241	\r
	242	//\r
	243	// Install the ISA I/O protocol on the Controller handle\r
	244	//\r
	245	Status = gBS->InstallMultipleProtocolInterfaces (\r
	246	&Controller,\r
	247	&gEfiIsaIoProtocolGuid,\r
	248	&IsaIoDevice->IsaIo,\r
	249	NULL\r
	250	);\r
	251	ASSERT_EFI_ERROR (Status);\r
	252	\r
	253	return EFI_SUCCESS;\r
	254	}\r
	255	\r
	256	/**\r
0a6f4824 LG	257	Stop this driver on ControllerHandle.\r
	258	\r
	259	The Stop() function is designed to be invoked from the EFI boot service DisconnectController().\r
	260	As a result, much of the error checking on the parameters to Stop() has been moved\r
	261	into this common boot service. It is legal to call Stop() from other locations,\r
558be455 RN	262	but the following calling restrictions must be followed or the system behavior will not be deterministic.\r
	263	1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this\r
	264	same driver's Start() function.\r
	265	2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid\r
	266	EFI_HANDLE. In addition, all of these handles must have been created in this driver's\r
	267	Start() function, and the Start() function must have called OpenProtocol() on\r
	268	ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r
0a6f4824	269	\r
558be455	270	@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
0a6f4824 LG	271	@param[in] ControllerHandle A handle to the device being stopped. The handle must\r
0a6f4824 LG	272	support a bus specific I/O protocol for the driver\r
558be455 RN	273	to use to stop the device.\r
558be455 RN	274	@param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.\r
0a6f4824	275	@param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL\r
558be455 RN	276	if NumberOfChildren is 0.\r
	277	\r
	278	@retval EFI_SUCCESS The device was stopped.\r
	279	@retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r
	280	**/\r
	281	EFI_STATUS\r
	282	EFIAPI\r
	283	IsaIoDriverStop (\r
	284	IN EFI_DRIVER_BINDING_PROTOCOL * This,\r
	285	IN EFI_HANDLE Controller,\r
	286	IN UINTN NumberOfChildren,\r
	287	IN EFI_HANDLE * ChildHandleBuffer OPTIONAL\r
	288	)\r
	289	{\r
	290	EFI_STATUS Status;\r
	291	ISA_IO_DEVICE *IsaIoDevice;\r
	292	EFI_ISA_IO_PROTOCOL *IsaIo;\r
	293	\r
	294	Status = gBS->OpenProtocol (\r
	295	Controller,\r
	296	&gEfiIsaIoProtocolGuid,\r
	297	(VOID **) &IsaIo,\r
	298	This->DriverBindingHandle,\r
	299	Controller,\r
	300	EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
	301	);\r
	302	if (EFI_ERROR (Status)) {\r
	303	return EFI_UNSUPPORTED;\r
	304	}\r
	305	\r
	306	IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (IsaIo);\r
	307	\r
	308	Status = gBS->UninstallMultipleProtocolInterfaces (\r
	309	Controller,\r
	310	&gEfiIsaIoProtocolGuid,\r
	311	&IsaIoDevice->IsaIo,\r
	312	NULL\r
	313	);\r
	314	if (!EFI_ERROR (Status)) {\r
	315	Status = gBS->CloseProtocol (\r
	316	Controller,\r
	317	&gEfiSioProtocolGuid,\r
	318	This->DriverBindingHandle,\r
	319	Controller\r
	320	);\r
	321	FreePool (IsaIoDevice->IsaIo.ResourceList);\r
	322	FreePool (IsaIoDevice);\r
	323	}\r
	324	\r
	325	return Status;\r
f6aa9c1b	326	}\r