[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, 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
    if (!EFI_ERROR (Status)) {\r
      if ((DevicePathType (DevicePath) != ACPI_DEVICE_PATH) ||\r
          ((DevicePathSubType (DevicePath) != ACPI_DP) && (DevicePathSubType (DevicePath) != ACPI_EXTENDED_DP))) {\r
        Status = EFI_UNSUPPORTED;\r
      }\r
    }\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              *AcpiNode;\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
  AcpiNode = DevicePath;\r
  Status = gBS->LocateDevicePath (&gEfiPciIoProtocolGuid, &AcpiNode, &PciHandle);\r
  if (!EFI_ERROR (Status)) {\r
    //\r
    // AcpiNode should point to the ACPI node now.\r
    //\r
    ASSERT ((DevicePathType (AcpiNode) == ACPI_DEVICE_PATH) &&\r
            ((DevicePathSubType (AcpiNode) == ACPI_DP) || (DevicePathSubType (AcpiNode) == ACPI_EXTENDED_DP))\r
           );\r
\r
    Status = gBS->HandleProtocol (PciHandle, &gEfiPciIoProtocolGuid, &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
}
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
	5	\r
	6	Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>\r
	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
	34	@param[in] ImageHandle The firmware allocated handle for the EFI image. \r
	35	@param[in] SystemTable A pointer to the EFI System Table.\r
	36	\r
	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
65	/** \r
66	Tests to see if a controller can be managed by the IsaIo driver.\r
67	\r
68	@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance. \r
69	@param[in] Controller The handle of the controller to test.\r
70	@param[in] RemainingDevicePath A pointer to the remaining portion of a device path.\r
71	\r
72	@retval EFI_SUCCESS The device is supported by this driver.\r
73	@retval EFI_ALREADY_STARTED The device is already being managed by this driver.\r
74	@retval EFI_ACCESS_DENIED The device is already being managed by a different driver \r
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
109	if (!EFI_ERROR (Status)) {\r
110	if ((DevicePathType (DevicePath) != ACPI_DEVICE_PATH) \|\|\r
111	((DevicePathSubType (DevicePath) != ACPI_DP) && (DevicePathSubType (DevicePath) != ACPI_EXTENDED_DP))) {\r
112	Status = EFI_UNSUPPORTED;\r
113	}\r
114	}\r
115	}\r
116	\r
117	if (EFI_ERROR (Status)) {\r
118	return Status;\r
119	}\r
120	\r
121	//\r
122	// Try to open the Super IO protocol on the controller\r
123	//\r
124	Status = gBS->OpenProtocol (\r
125	Controller,\r
126	&gEfiSioProtocolGuid,\r
127	(VOID **) &Sio,\r
128	This->DriverBindingHandle,\r
129	Controller,\r
130	EFI_OPEN_PROTOCOL_BY_DRIVER\r
131	);\r
132	if (!EFI_ERROR (Status)) {\r
133	gBS->CloseProtocol (\r
134	Controller,\r
135	&gEfiSioProtocolGuid,\r
136	This->DriverBindingHandle,\r
137	Controller\r
138	);\r
139	}\r
140	\r
141	return Status;\r
142	}\r
143	\r
144	/**\r
145	Start this driver on ControllerHandle. \r
146	\r
147	The Start() function is designed to be invoked from the EFI boot service ConnectController(). \r
148	As a result, much of the error checking on the parameters to Start() has been moved into this \r
149	common boot service. It is legal to call Start() from other locations, but the following calling \r
150	restrictions must be followed or the system behavior will not be deterministic.\r
151	1. ControllerHandle must be a valid EFI_HANDLE.\r
152	2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned\r
153	EFI_DEVICE_PATH_PROTOCOL.\r
154	3. Prior to calling Start(), the Supported() function for the driver specified by This must\r
155	have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS. \r
156	\r
157	@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
158	@param[in] ControllerHandle The handle of the controller to start. This handle \r
159	must support a protocol interface that supplies \r
160	an I/O abstraction to the driver.\r
161	@param[in] RemainingDevicePath A pointer to the remaining portion of a device path. \r
162	This parameter is ignored by device drivers, and is optional for bus drivers.\r
163	\r
164	@retval EFI_SUCCESS The device was started.\r
165	@retval EFI_DEVICE_ERROR The device could not be started due to a device error.\r
166	Currently not implemented.\r
167	@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
168	@retval Others The driver failded to start the device.\r
169	**/\r
170	EFI_STATUS\r
171	EFIAPI\r
172	IsaIoDriverStart (\r
173	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
174	IN EFI_HANDLE Controller,\r
175	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r
176	)\r
177	{\r
178	EFI_STATUS Status;\r
179	EFI_PCI_IO_PROTOCOL *PciIo;\r
180	EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
181	EFI_HANDLE PciHandle;\r
182	EFI_SIO_PROTOCOL *Sio;\r
183	ACPI_RESOURCE_HEADER_PTR Resources;\r
184	EFI_DEVICE_PATH_PROTOCOL *AcpiNode;\r
185	ISA_IO_DEVICE *IsaIoDevice;\r
186	\r
187	PciIo = NULL;\r
188	Sio = NULL;\r
189	\r
190	//\r
191	// Open Device Path Protocol\r
192	//\r
193	Status = gBS->OpenProtocol (\r
194	Controller,\r
195	&gEfiDevicePathProtocolGuid,\r
196	(VOID **) &DevicePath,\r
197	This->DriverBindingHandle,\r
198	Controller,\r
199	EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
200	);\r
201	if (EFI_ERROR (Status)) {\r
202	return Status;\r
203	}\r
204	\r
205	//\r
206	// Get the PciIo protocol from its parent controller.\r
207	//\r
208	AcpiNode = DevicePath;\r
209	Status = gBS->LocateDevicePath (&gEfiPciIoProtocolGuid, &AcpiNode, &PciHandle);\r
210	if (!EFI_ERROR (Status)) {\r
211	//\r
212	// AcpiNode should point to the ACPI node now.\r
213	//\r
214	ASSERT ((DevicePathType (AcpiNode) == ACPI_DEVICE_PATH) &&\r
215	((DevicePathSubType (AcpiNode) == ACPI_DP) \|\| (DevicePathSubType (AcpiNode) == ACPI_EXTENDED_DP))\r
216	);\r
217	\r
218	Status = gBS->HandleProtocol (PciHandle, &gEfiPciIoProtocolGuid, &PciIo);\r
219	ASSERT_EFI_ERROR (Status);\r
220	\r
221	//\r
222	// Open Super IO Protocol\r
223	//\r
224	Status = gBS->OpenProtocol (\r
225	Controller,\r
226	&gEfiSioProtocolGuid,\r
227	(VOID **) &Sio,\r
228	This->DriverBindingHandle,\r
229	Controller,\r
230	EFI_OPEN_PROTOCOL_BY_DRIVER\r
231	);\r
232	}\r
233	\r
234	if (EFI_ERROR (Status)) {\r
235	//\r
236	// Fail due to LocateDevicePath(...) or OpenProtocol(Sio, BY_DRIVER)\r
237	//\r
238	return Status;\r
239	}\r
240	\r
241	Status = Sio->GetResources (Sio, &Resources);\r
242	ASSERT_EFI_ERROR (Status);\r
243	\r
244	IsaIoDevice = AllocatePool (sizeof (ISA_IO_DEVICE));\r
245	ASSERT (IsaIoDevice != NULL);\r
246	\r
247	IsaIoDevice->Signature = ISA_IO_DEVICE_SIGNATURE;\r
248	IsaIoDevice->PciIo = PciIo;\r
249	\r
250	//\r
251	// Initialize the ISA I/O instance structure\r
252	//\r
253	InitializeIsaIoInstance (IsaIoDevice, DevicePath, Resources);\r
254	\r
255	//\r
256	// Install the ISA I/O protocol on the Controller handle\r
257	//\r
258	Status = gBS->InstallMultipleProtocolInterfaces (\r
259	&Controller,\r
260	&gEfiIsaIoProtocolGuid,\r
261	&IsaIoDevice->IsaIo,\r
262	NULL\r
263	);\r
264	ASSERT_EFI_ERROR (Status);\r
265	\r
266	return EFI_SUCCESS;\r
267	}\r
268	\r
269	/**\r
270	Stop this driver on ControllerHandle. \r
271	\r
272	The Stop() function is designed to be invoked from the EFI boot service DisconnectController(). \r
273	As a result, much of the error checking on the parameters to Stop() has been moved \r
274	into this common boot service. It is legal to call Stop() from other locations, \r
275	but the following calling restrictions must be followed or the system behavior will not be deterministic.\r
276	1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this\r
277	same driver's Start() function.\r
278	2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid\r
279	EFI_HANDLE. In addition, all of these handles must have been created in this driver's\r
280	Start() function, and the Start() function must have called OpenProtocol() on\r
281	ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r
282	\r
283	@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
284	@param[in] ControllerHandle A handle to the device being stopped. The handle must \r
285	support a bus specific I/O protocol for the driver \r
286	to use to stop the device.\r
287	@param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.\r
288	@param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL \r
289	if NumberOfChildren is 0.\r
290	\r
291	@retval EFI_SUCCESS The device was stopped.\r
292	@retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r
293	**/\r
294	EFI_STATUS\r
295	EFIAPI\r
296	IsaIoDriverStop (\r
297	IN EFI_DRIVER_BINDING_PROTOCOL * This,\r
298	IN EFI_HANDLE Controller,\r
299	IN UINTN NumberOfChildren,\r
300	IN EFI_HANDLE * ChildHandleBuffer OPTIONAL\r
301	)\r
302	{\r
303	EFI_STATUS Status;\r
304	ISA_IO_DEVICE *IsaIoDevice;\r
305	EFI_ISA_IO_PROTOCOL *IsaIo;\r
306	\r
307	Status = gBS->OpenProtocol (\r
308	Controller,\r
309	&gEfiIsaIoProtocolGuid,\r
310	(VOID **) &IsaIo,\r
311	This->DriverBindingHandle,\r
312	Controller,\r
313	EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
314	);\r
315	if (EFI_ERROR (Status)) {\r
316	return EFI_UNSUPPORTED;\r
317	}\r
318	\r
319	IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (IsaIo);\r
320	\r
321	Status = gBS->UninstallMultipleProtocolInterfaces (\r
322	Controller,\r
323	&gEfiIsaIoProtocolGuid,\r
324	&IsaIoDevice->IsaIo,\r
325	NULL\r
326	);\r
327	if (!EFI_ERROR (Status)) {\r
328	Status = gBS->CloseProtocol (\r
329	Controller,\r
330	&gEfiSioProtocolGuid,\r
331	This->DriverBindingHandle,\r
332	Controller\r
333	);\r
334	FreePool (IsaIoDevice->IsaIo.ResourceList);\r
335	FreePool (IsaIoDevice);\r
336	}\r
337	\r
338	return Status;\r
339	}