[mirror_edk2.git] / EdkNt32Pkg / Dxe / WinNtThunk / Bus / BlockIo / DriverConfiguration.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
  DriverConfiguration.c\r
\r
Abstract:\r
\r
--*/\r
\r
#include "WinNtBlockIo.h"\r
\r
//\r
// EFI Driver Configuration Functions\r
//\r
EFI_STATUS\r
EFIAPI\r
WinNtBlockIoDriverConfigurationSetOptions (\r
  IN  EFI_DRIVER_CONFIGURATION_PROTOCOL                      *This,\r
  IN  EFI_HANDLE                                             ControllerHandle,\r
  IN  EFI_HANDLE                                             ChildHandle  OPTIONAL,\r
  IN  CHAR8                                                  *Language,\r
  OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED               *ActionRequired\r
  );\r
\r
EFI_STATUS\r
EFIAPI\r
WinNtBlockIoDriverConfigurationOptionsValid (\r
  IN  EFI_DRIVER_CONFIGURATION_PROTOCOL               *This,\r
  IN  EFI_HANDLE                                      ControllerHandle,\r
  IN  EFI_HANDLE                                      ChildHandle  OPTIONAL\r
  );\r
\r
EFI_STATUS\r
EFIAPI\r
WinNtBlockIoDriverConfigurationForceDefaults (\r
  IN  EFI_DRIVER_CONFIGURATION_PROTOCOL                      *This,\r
  IN  EFI_HANDLE                                             ControllerHandle,\r
  IN  EFI_HANDLE                                             ChildHandle  OPTIONAL,\r
  IN  UINT32                                                 DefaultType,\r
  OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED               *ActionRequired\r
  );\r
\r
//\r
// EFI Driver Configuration Protocol\r
//\r
EFI_DRIVER_CONFIGURATION_PROTOCOL gWinNtBlockIoDriverConfiguration = {\r
  WinNtBlockIoDriverConfigurationSetOptions,\r
  WinNtBlockIoDriverConfigurationOptionsValid,\r
  WinNtBlockIoDriverConfigurationForceDefaults,\r
  LANGUAGESUPPORTED\r
};\r
\r
EFI_STATUS\r
EFIAPI\r
WinNtBlockIoDriverConfigurationSetOptions (\r
  IN  EFI_DRIVER_CONFIGURATION_PROTOCOL                      *This,\r
  IN  EFI_HANDLE                                             ControllerHandle,\r
  IN  EFI_HANDLE                                             ChildHandle  OPTIONAL,\r
  IN  CHAR8                                                  *Language,\r
  OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED               *ActionRequired\r
  )\r
/*++\r
\r
  Routine Description:\r
    Allows the user to set controller specific options for a controller that a\r
    driver is currently managing.\r
\r
  Arguments:\r
    This             - A pointer to the EFI_DRIVER_CONFIGURATION_ PROTOCOL instance.\r
    ControllerHandle - The handle of the controller to set options on.\r
    ChildHandle      - The handle of the child controller to set options on.  This\r
                       is an optional parameter that may be NULL.  It will be NULL\r
                       for device drivers, and for a bus drivers that wish to set\r
                       options for the bus controller.  It will not be NULL for a\r
                       bus driver that wishes to set options for one of its child\r
                       controllers.\r
    Language         - A pointer to a three character ISO 639-2 language identifier.\r
                       This is the language of the user interface that should be\r
                       presented to the user, and it must match one of the languages\r
                       specified in SupportedLanguages.  The number of languages\r
                       supported by a driver is up to the driver writer.\r
    ActionRequired   - A pointer to the action that the calling agent is required\r
                       to perform when this function returns.  See "Related\r
                       Definitions" for a list of the actions that the calling\r
                       agent is required to perform prior to accessing\r
                       ControllerHandle again.\r
\r
  Returns:\r
    EFI_SUCCESS           - The driver specified by This successfully set the\r
                            configuration options for the controller specified\r
                            by ControllerHandle..\r
    EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r
    EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.\r
    EFI_INVALID_PARAMETER - ActionRequired is NULL.\r
    EFI_UNSUPPORTED       - The driver specified by This does not support setting\r
                            configuration options for the controller specified by\r
                            ControllerHandle and ChildHandle.\r
    EFI_UNSUPPORTED       - The driver specified by This does not support the\r
                            language specified by Language.\r
    EFI_DEVICE_ERROR      - A device error occurred while attempt to set the\r
                            configuration options for the controller specified\r
                            by ControllerHandle and ChildHandle.\r
    EFI_OUT_RESOURCES     - There are not enough resources available to set the\r
                            configuration options for the controller specified\r
                            by ControllerHandle and ChildHandle.\r
\r
--*/\r
{\r
  EFI_STATUS            Status;\r
  EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
  CHAR8                 *SupportedLanguage;\r
\r
  SupportedLanguage = This->SupportedLanguages;\r
\r
  Status            = EFI_UNSUPPORTED;\r
  while (*SupportedLanguage != 0) {\r
    if (AsciiStrnCmp (Language, SupportedLanguage, 3) == 0) {\r
      Status = EFI_SUCCESS;\r
    }\r
\r
    SupportedLanguage += 3;\r
  }\r
\r
  if (EFI_ERROR (Status)) {\r
    return Status;\r
  }\r
\r
  if (ActionRequired == NULL || ControllerHandle == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  if (ChildHandle != NULL) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  //\r
  // Validate controller handle\r
  //\r
  Status = gBS->OpenProtocol (\r
                  ControllerHandle,\r
                  &gEfiWinNtIoProtocolGuid,\r
                  &BlockIo,\r
                  gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
                  ControllerHandle,\r
                  EFI_OPEN_PROTOCOL_BY_DRIVER\r
                  );\r
\r
  if (!EFI_ERROR (Status)) {\r
    gBS->CloseProtocol (\r
          ControllerHandle,\r
          &gEfiWinNtIoProtocolGuid,\r
          gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
          ControllerHandle\r
          );\r
\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  if (Status == EFI_UNSUPPORTED) {\r
    return Status;\r
  } else if (Status != EFI_ALREADY_STARTED) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  *ActionRequired = EfiDriverConfigurationActionNone;\r
  return EFI_SUCCESS;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
WinNtBlockIoDriverConfigurationOptionsValid (\r
  IN  EFI_DRIVER_CONFIGURATION_PROTOCOL               *This,\r
  IN  EFI_HANDLE                                      ControllerHandle,\r
  IN  EFI_HANDLE                                      ChildHandle  OPTIONAL\r
  )\r
/*++\r
\r
  Routine Description:\r
    Tests to see if a controller's current configuration options are valid.\r
\r
  Arguments:\r
    This             - A pointer to the EFI_DRIVER_CONFIGURATION_PROTOCOL instance.\r
    ControllerHandle - The handle of the controller to test if it's current\r
                       configuration options are valid.\r
    ChildHandle      - The handle of the child controller to test if it's current\r
                       configuration options are valid.  This is an optional\r
                       parameter that may be NULL.  It will be NULL for device\r
                       drivers.  It will also be NULL for a bus drivers that wish\r
                       to test the configuration options for the bus controller.\r
                       It will not be NULL for a bus driver that wishes to test\r
                       configuration options for one of its child controllers.\r
\r
  Returns:\r
    EFI_SUCCESS           - The controller specified by ControllerHandle and\r
                            ChildHandle that is being managed by the driver\r
                            specified by This has a valid set of  configuration\r
                            options.\r
    EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r
    EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.\r
    EFI_UNSUPPORTED       - The driver specified by This is not currently\r
                            managing the controller specified by ControllerHandle\r
                            and ChildHandle.\r
    EFI_DEVICE_ERROR      - The controller specified by ControllerHandle and\r
                            ChildHandle that is being managed by the driver\r
                            specified by This has an invalid set of configuration\r
                            options.\r
\r
--*/\r
{\r
  EFI_STATUS            Status;\r
  EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
\r
  if (ChildHandle != NULL) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  if (ControllerHandle == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  //\r
  // Validate controller handle\r
  //\r
  Status = gBS->OpenProtocol (\r
                  ControllerHandle,\r
                  &gEfiWinNtIoProtocolGuid,\r
                  &BlockIo,\r
                  gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
                  ControllerHandle,\r
                  EFI_OPEN_PROTOCOL_BY_DRIVER\r
                  );\r
\r
  if (!EFI_ERROR (Status)) {\r
    gBS->CloseProtocol (\r
          ControllerHandle,\r
          &gEfiWinNtIoProtocolGuid,\r
          gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
          ControllerHandle\r
          );\r
\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  if (Status == EFI_UNSUPPORTED) {\r
    return Status;\r
  } else if (Status != EFI_ALREADY_STARTED) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r
\r
EFI_STATUS\r
EFIAPI\r
WinNtBlockIoDriverConfigurationForceDefaults (\r
  IN  EFI_DRIVER_CONFIGURATION_PROTOCOL                      *This,\r
  IN  EFI_HANDLE                                             ControllerHandle,\r
  IN  EFI_HANDLE                                             ChildHandle  OPTIONAL,\r
  IN  UINT32                                                 DefaultType,\r
  OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED               *ActionRequired\r
  )\r
/*++\r
\r
  Routine Description:\r
    Forces a driver to set the default configuration options for a controller.\r
\r
  Arguments:\r
    This             - A pointer to the EFI_DRIVER_CONFIGURATION_ PROTOCOL instance.\r
    ControllerHandle - The handle of the controller to force default configuration options on.\r
    ChildHandle      - The handle of the child controller to force default configuration options on  This is an optional parameter that may be NULL.  It will be NULL for device drivers.  It will also be NULL for a bus drivers that wish to force default configuration options for the bus controller.  It will not be NULL for a bus driver that wishes to force default configuration options for one of its child controllers.\r
    DefaultType      - The type of default configuration options to force on the controller specified by ControllerHandle and ChildHandle.  See Table 9-1 for legal values.  A DefaultType of 0x00000000 must be supported by this protocol.\r
    ActionRequired   - A pointer to the action that the calling agent is required to perform when this function returns.  See "Related Definitions" in Section 9.1for a list of the actions that the calling agent is required to perform prior to accessing ControllerHandle again.\r
\r
  Returns:\r
    EFI_SUCCESS           - The driver specified by This successfully forced the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
    EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r
    EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.\r
    EFI_INVALID_PARAMETER - ActionRequired is NULL.\r
    EFI_UNSUPPORTED       - The driver specified by This does not support forcing the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
    EFI_UNSUPPORTED       - The driver specified by This does not support the configuration type specified by DefaultType.\r
    EFI_DEVICE_ERROR      - A device error occurred while attempt to force the default configuration options on the controller specified by  ControllerHandle and ChildHandle.\r
    EFI_OUT_RESOURCES     - There are not enough resources available to force the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
\r
--*/\r
{\r
  EFI_STATUS            Status;\r
  EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
\r
  if (ChildHandle != NULL) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  if (ActionRequired == NULL || ControllerHandle == NULL) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  //\r
  // Validate controller handle\r
  //\r
  Status = gBS->OpenProtocol (\r
                  ControllerHandle,\r
                  &gEfiWinNtIoProtocolGuid,\r
                  &BlockIo,\r
                  gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
                  ControllerHandle,\r
                  EFI_OPEN_PROTOCOL_BY_DRIVER\r
                  );\r
\r
  if (!EFI_ERROR (Status)) {\r
    gBS->CloseProtocol (\r
          ControllerHandle,\r
          &gEfiWinNtIoProtocolGuid,\r
          gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
          ControllerHandle\r
          );\r
\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  if (Status == EFI_UNSUPPORTED) {\r
    return Status;\r
  } else if (Status != EFI_ALREADY_STARTED) {\r
    return EFI_INVALID_PARAMETER;\r
  }\r
\r
  *ActionRequired = EfiDriverConfigurationActionNone;\r
  return EFI_SUCCESS;\r
}\r
Commit	Line	Data
878ddf1f	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	DriverConfiguration.c\r
	15	\r
	16	Abstract:\r
	17	\r
	18	--*/\r
	19	\r
	20	#include "WinNtBlockIo.h"\r
	21	\r
	22	//\r
	23	// EFI Driver Configuration Functions\r
	24	//\r
	25	EFI_STATUS\r
	26	EFIAPI\r
	27	WinNtBlockIoDriverConfigurationSetOptions (\r
	28	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
	29	IN EFI_HANDLE ControllerHandle,\r
	30	IN EFI_HANDLE ChildHandle OPTIONAL,\r
	31	IN CHAR8 *Language,\r
	32	OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED *ActionRequired\r
	33	);\r
	34	\r
	35	EFI_STATUS\r
	36	EFIAPI\r
	37	WinNtBlockIoDriverConfigurationOptionsValid (\r
	38	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
	39	IN EFI_HANDLE ControllerHandle,\r
	40	IN EFI_HANDLE ChildHandle OPTIONAL\r
	41	);\r
	42	\r
	43	EFI_STATUS\r
	44	EFIAPI\r
	45	WinNtBlockIoDriverConfigurationForceDefaults (\r
	46	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
	47	IN EFI_HANDLE ControllerHandle,\r
	48	IN EFI_HANDLE ChildHandle OPTIONAL,\r
	49	IN UINT32 DefaultType,\r
	50	OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED *ActionRequired\r
	51	);\r
	52	\r
	53	//\r
	54	// EFI Driver Configuration Protocol\r
	55	//\r
	56	EFI_DRIVER_CONFIGURATION_PROTOCOL gWinNtBlockIoDriverConfiguration = {\r
	57	WinNtBlockIoDriverConfigurationSetOptions,\r
	58	WinNtBlockIoDriverConfigurationOptionsValid,\r
	59	WinNtBlockIoDriverConfigurationForceDefaults,\r
	60	LANGUAGESUPPORTED\r
	61	};\r
	62	\r
	63	EFI_STATUS\r
	64	EFIAPI\r
65	WinNtBlockIoDriverConfigurationSetOptions (\r
66	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
67	IN EFI_HANDLE ControllerHandle,\r
68	IN EFI_HANDLE ChildHandle OPTIONAL,\r
69	IN CHAR8 *Language,\r
70	OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED *ActionRequired\r
71	)\r
72	/*++\r
73	\r
74	Routine Description:\r
75	Allows the user to set controller specific options for a controller that a\r
76	driver is currently managing.\r
77	\r
78	Arguments:\r
79	This - A pointer to the EFI_DRIVER_CONFIGURATION_ PROTOCOL instance.\r
80	ControllerHandle - The handle of the controller to set options on.\r
81	ChildHandle - The handle of the child controller to set options on. This\r
82	is an optional parameter that may be NULL. It will be NULL\r
83	for device drivers, and for a bus drivers that wish to set\r
84	options for the bus controller. It will not be NULL for a\r
85	bus driver that wishes to set options for one of its child\r
86	controllers.\r
87	Language - A pointer to a three character ISO 639-2 language identifier.\r
88	This is the language of the user interface that should be\r
89	presented to the user, and it must match one of the languages\r
90	specified in SupportedLanguages. The number of languages\r
91	supported by a driver is up to the driver writer.\r
92	ActionRequired - A pointer to the action that the calling agent is required\r
93	to perform when this function returns. See "Related\r
94	Definitions" for a list of the actions that the calling\r
95	agent is required to perform prior to accessing\r
96	ControllerHandle again.\r
97	\r
98	Returns:\r
99	EFI_SUCCESS - The driver specified by This successfully set the\r
100	configuration options for the controller specified\r
101	by ControllerHandle..\r
102	EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r
103	EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.\r
104	EFI_INVALID_PARAMETER - ActionRequired is NULL.\r
105	EFI_UNSUPPORTED - The driver specified by This does not support setting\r
106	configuration options for the controller specified by\r
107	ControllerHandle and ChildHandle.\r
108	EFI_UNSUPPORTED - The driver specified by This does not support the\r
109	language specified by Language.\r
110	EFI_DEVICE_ERROR - A device error occurred while attempt to set the\r
111	configuration options for the controller specified\r
112	by ControllerHandle and ChildHandle.\r
113	EFI_OUT_RESOURCES - There are not enough resources available to set the\r
114	configuration options for the controller specified\r
115	by ControllerHandle and ChildHandle.\r
116	\r
117	--*/\r
118	{\r
119	EFI_STATUS Status;\r
120	EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
121	CHAR8 *SupportedLanguage;\r
122	\r
123	SupportedLanguage = This->SupportedLanguages;\r
124	\r
125	Status = EFI_UNSUPPORTED;\r
126	while (*SupportedLanguage != 0) {\r
127	if (AsciiStrnCmp (Language, SupportedLanguage, 3) == 0) {\r
128	Status = EFI_SUCCESS;\r
129	}\r
130	\r
131	SupportedLanguage += 3;\r
132	}\r
133	\r
134	if (EFI_ERROR (Status)) {\r
135	return Status;\r
136	}\r
137	\r
138	if (ActionRequired == NULL \|\| ControllerHandle == NULL) {\r
139	return EFI_INVALID_PARAMETER;\r
140	}\r
141	\r
142	if (ChildHandle != NULL) {\r
143	return EFI_UNSUPPORTED;\r
144	}\r
145	\r
146	//\r
147	// Validate controller handle\r
148	//\r
149	Status = gBS->OpenProtocol (\r
150	ControllerHandle,\r
151	&gEfiWinNtIoProtocolGuid,\r
152	&BlockIo,\r
153	gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
154	ControllerHandle,\r
155	EFI_OPEN_PROTOCOL_BY_DRIVER\r
156	);\r
157	\r
158	if (!EFI_ERROR (Status)) {\r
159	gBS->CloseProtocol (\r
160	ControllerHandle,\r
161	&gEfiWinNtIoProtocolGuid,\r
162	gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
163	ControllerHandle\r
164	);\r
165	\r
166	return EFI_UNSUPPORTED;\r
167	}\r
168	\r
169	if (Status == EFI_UNSUPPORTED) {\r
170	return Status;\r
171	} else if (Status != EFI_ALREADY_STARTED) {\r
172	return EFI_INVALID_PARAMETER;\r
173	}\r
174	\r
175	*ActionRequired = EfiDriverConfigurationActionNone;\r
176	return EFI_SUCCESS;\r
177	}\r
178	\r
179	EFI_STATUS\r
180	EFIAPI\r
181	WinNtBlockIoDriverConfigurationOptionsValid (\r
182	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
183	IN EFI_HANDLE ControllerHandle,\r
184	IN EFI_HANDLE ChildHandle OPTIONAL\r
185	)\r
186	/*++\r
187	\r
188	Routine Description:\r
189	Tests to see if a controller's current configuration options are valid.\r
190	\r
191	Arguments:\r
192	This - A pointer to the EFI_DRIVER_CONFIGURATION_PROTOCOL instance.\r
193	ControllerHandle - The handle of the controller to test if it's current\r
194	configuration options are valid.\r
195	ChildHandle - The handle of the child controller to test if it's current\r
196	configuration options are valid. This is an optional\r
197	parameter that may be NULL. It will be NULL for device\r
198	drivers. It will also be NULL for a bus drivers that wish\r
199	to test the configuration options for the bus controller.\r
200	It will not be NULL for a bus driver that wishes to test\r
201	configuration options for one of its child controllers.\r
202	\r
203	Returns:\r
204	EFI_SUCCESS - The controller specified by ControllerHandle and\r
205	ChildHandle that is being managed by the driver\r
206	specified by This has a valid set of configuration\r
207	options.\r
208	EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r
209	EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.\r
210	EFI_UNSUPPORTED - The driver specified by This is not currently\r
211	managing the controller specified by ControllerHandle\r
212	and ChildHandle.\r
213	EFI_DEVICE_ERROR - The controller specified by ControllerHandle and\r
214	ChildHandle that is being managed by the driver\r
215	specified by This has an invalid set of configuration\r
216	options.\r
217	\r
218	--*/\r
219	{\r
220	EFI_STATUS Status;\r
221	EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
222	\r
223	if (ChildHandle != NULL) {\r
224	return EFI_UNSUPPORTED;\r
225	}\r
226	\r
227	if (ControllerHandle == NULL) {\r
228	return EFI_INVALID_PARAMETER;\r
229	}\r
230	\r
231	//\r
232	// Validate controller handle\r
233	//\r
234	Status = gBS->OpenProtocol (\r
235	ControllerHandle,\r
236	&gEfiWinNtIoProtocolGuid,\r
237	&BlockIo,\r
238	gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
239	ControllerHandle,\r
240	EFI_OPEN_PROTOCOL_BY_DRIVER\r
241	);\r
242	\r
243	if (!EFI_ERROR (Status)) {\r
244	gBS->CloseProtocol (\r
245	ControllerHandle,\r
246	&gEfiWinNtIoProtocolGuid,\r
247	gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
248	ControllerHandle\r
249	);\r
250	\r
251	return EFI_UNSUPPORTED;\r
252	}\r
253	\r
254	if (Status == EFI_UNSUPPORTED) {\r
255	return Status;\r
256	} else if (Status != EFI_ALREADY_STARTED) {\r
257	return EFI_INVALID_PARAMETER;\r
258	}\r
259	\r
260	return EFI_SUCCESS;\r
261	}\r
262	\r
263	EFI_STATUS\r
264	EFIAPI\r
265	WinNtBlockIoDriverConfigurationForceDefaults (\r
266	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
267	IN EFI_HANDLE ControllerHandle,\r
268	IN EFI_HANDLE ChildHandle OPTIONAL,\r
269	IN UINT32 DefaultType,\r
270	OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED *ActionRequired\r
271	)\r
272	/*++\r
273	\r
274	Routine Description:\r
275	Forces a driver to set the default configuration options for a controller.\r
276	\r
277	Arguments:\r
278	This - A pointer to the EFI_DRIVER_CONFIGURATION_ PROTOCOL instance.\r
279	ControllerHandle - The handle of the controller to force default configuration options on.\r
280	ChildHandle - The handle of the child controller to force default configuration options on This is an optional parameter that may be NULL. It will be NULL for device drivers. It will also be NULL for a bus drivers that wish to force default configuration options for the bus controller. It will not be NULL for a bus driver that wishes to force default configuration options for one of its child controllers.\r
281	DefaultType - The type of default configuration options to force on the controller specified by ControllerHandle and ChildHandle. See Table 9-1 for legal values. A DefaultType of 0x00000000 must be supported by this protocol.\r
282	ActionRequired - A pointer to the action that the calling agent is required to perform when this function returns. See "Related Definitions" in Section 9.1for a list of the actions that the calling agent is required to perform prior to accessing ControllerHandle again.\r
283	\r
284	Returns:\r
285	EFI_SUCCESS - The driver specified by This successfully forced the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
286	EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r
287	EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.\r
288	EFI_INVALID_PARAMETER - ActionRequired is NULL.\r
289	EFI_UNSUPPORTED - The driver specified by This does not support forcing the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
290	EFI_UNSUPPORTED - The driver specified by This does not support the configuration type specified by DefaultType.\r
291	EFI_DEVICE_ERROR - A device error occurred while attempt to force the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
292	EFI_OUT_RESOURCES - There are not enough resources available to force the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
293	\r
294	--*/\r
295	{\r
296	EFI_STATUS Status;\r
297	EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
298	\r
299	if (ChildHandle != NULL) {\r
300	return EFI_UNSUPPORTED;\r
301	}\r
302	\r
303	if (ActionRequired == NULL \|\| ControllerHandle == NULL) {\r
304	return EFI_INVALID_PARAMETER;\r
305	}\r
306	\r
307	//\r
308	// Validate controller handle\r
309	//\r
310	Status = gBS->OpenProtocol (\r
311	ControllerHandle,\r
312	&gEfiWinNtIoProtocolGuid,\r
313	&BlockIo,\r
314	gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
315	ControllerHandle,\r
316	EFI_OPEN_PROTOCOL_BY_DRIVER\r
317	);\r
318	\r
319	if (!EFI_ERROR (Status)) {\r
320	gBS->CloseProtocol (\r
321	ControllerHandle,\r
322	&gEfiWinNtIoProtocolGuid,\r
323	gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
324	ControllerHandle\r
325	);\r
326	\r
327	return EFI_UNSUPPORTED;\r
328	}\r
329	\r
330	if (Status == EFI_UNSUPPORTED) {\r
331	return Status;\r
332	} else if (Status != EFI_ALREADY_STARTED) {\r
333	return EFI_INVALID_PARAMETER;\r
334	}\r
335	\r
336	*ActionRequired = EfiDriverConfigurationActionNone;\r
337	return EFI_SUCCESS;\r
338	}\r