[mirror_edk2.git] / Nt32Pkg / WinNtBlockIoDxe / 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
#include <Uefi.h>\r
#include <WinNtDxe.h>\r
#include <Protocol/BlockIo.h>\r
#include <Protocol/ComponentName.h>\r
#include <Protocol/DriverBinding.h>\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
10160456	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	#include <Uefi.h>\r
	20	#include <WinNtDxe.h>\r
	21	#include <Protocol/BlockIo.h>\r
	22	#include <Protocol/ComponentName.h>\r
	23	#include <Protocol/DriverBinding.h>\r
	24	\r
	25	#include "WinNtBlockIo.h"\r
	26	\r
	27	//\r
	28	// EFI Driver Configuration Functions\r
	29	//\r
	30	EFI_STATUS\r
	31	EFIAPI\r
	32	WinNtBlockIoDriverConfigurationSetOptions (\r
	33	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
	34	IN EFI_HANDLE ControllerHandle,\r
	35	IN EFI_HANDLE ChildHandle OPTIONAL,\r
	36	IN CHAR8 *Language,\r
	37	OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED *ActionRequired\r
	38	);\r
	39	\r
	40	EFI_STATUS\r
	41	EFIAPI\r
	42	WinNtBlockIoDriverConfigurationOptionsValid (\r
	43	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
	44	IN EFI_HANDLE ControllerHandle,\r
	45	IN EFI_HANDLE ChildHandle OPTIONAL\r
	46	);\r
	47	\r
	48	EFI_STATUS\r
	49	EFIAPI\r
	50	WinNtBlockIoDriverConfigurationForceDefaults (\r
	51	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
	52	IN EFI_HANDLE ControllerHandle,\r
	53	IN EFI_HANDLE ChildHandle OPTIONAL,\r
	54	IN UINT32 DefaultType,\r
	55	OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED *ActionRequired\r
	56	);\r
	57	\r
	58	//\r
	59	// EFI Driver Configuration Protocol\r
	60	//\r
	61	EFI_DRIVER_CONFIGURATION_PROTOCOL gWinNtBlockIoDriverConfiguration = {\r
	62	WinNtBlockIoDriverConfigurationSetOptions,\r
	63	WinNtBlockIoDriverConfigurationOptionsValid,\r
	64	WinNtBlockIoDriverConfigurationForceDefaults,\r
65	LANGUAGESUPPORTED\r
66	};\r
67	\r
68	EFI_STATUS\r
69	EFIAPI\r
70	WinNtBlockIoDriverConfigurationSetOptions (\r
71	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
72	IN EFI_HANDLE ControllerHandle,\r
73	IN EFI_HANDLE ChildHandle OPTIONAL,\r
74	IN CHAR8 *Language,\r
75	OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED *ActionRequired\r
76	)\r
77	/*++\r
78	\r
79	Routine Description:\r
80	Allows the user to set controller specific options for a controller that a\r
81	driver is currently managing.\r
82	\r
83	Arguments:\r
84	This - A pointer to the EFI_DRIVER_CONFIGURATION_ PROTOCOL instance.\r
85	ControllerHandle - The handle of the controller to set options on.\r
86	ChildHandle - The handle of the child controller to set options on. This\r
87	is an optional parameter that may be NULL. It will be NULL\r
88	for device drivers, and for a bus drivers that wish to set\r
89	options for the bus controller. It will not be NULL for a\r
90	bus driver that wishes to set options for one of its child\r
91	controllers.\r
92	Language - A pointer to a three character ISO 639-2 language identifier.\r
93	This is the language of the user interface that should be\r
94	presented to the user, and it must match one of the languages\r
95	specified in SupportedLanguages. The number of languages\r
96	supported by a driver is up to the driver writer.\r
97	ActionRequired - A pointer to the action that the calling agent is required\r
98	to perform when this function returns. See "Related\r
99	Definitions" for a list of the actions that the calling\r
100	agent is required to perform prior to accessing\r
101	ControllerHandle again.\r
102	\r
103	Returns:\r
104	EFI_SUCCESS - The driver specified by This successfully set the\r
105	configuration options for the controller specified\r
106	by ControllerHandle..\r
107	EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r
108	EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.\r
109	EFI_INVALID_PARAMETER - ActionRequired is NULL.\r
110	EFI_UNSUPPORTED - The driver specified by This does not support setting\r
111	configuration options for the controller specified by\r
112	ControllerHandle and ChildHandle.\r
113	EFI_UNSUPPORTED - The driver specified by This does not support the\r
114	language specified by Language.\r
115	EFI_DEVICE_ERROR - A device error occurred while attempt to set the\r
116	configuration options for the controller specified\r
117	by ControllerHandle and ChildHandle.\r
118	EFI_OUT_RESOURCES - There are not enough resources available to set the\r
119	configuration options for the controller specified\r
120	by ControllerHandle and ChildHandle.\r
121	\r
122	--*/\r
123	{\r
124	EFI_STATUS Status;\r
125	EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
126	CHAR8 *SupportedLanguage;\r
127	\r
128	SupportedLanguage = This->SupportedLanguages;\r
129	\r
130	Status = EFI_UNSUPPORTED;\r
131	while (*SupportedLanguage != 0) {\r
132	if (AsciiStrnCmp (Language, SupportedLanguage, 3) == 0) {\r
133	Status = EFI_SUCCESS;\r
134	}\r
135	\r
136	SupportedLanguage += 3;\r
137	}\r
138	\r
139	if (EFI_ERROR (Status)) {\r
140	return Status;\r
141	}\r
142	\r
143	if (ActionRequired == NULL \|\| ControllerHandle == NULL) {\r
144	return EFI_INVALID_PARAMETER;\r
145	}\r
146	\r
147	if (ChildHandle != NULL) {\r
148	return EFI_UNSUPPORTED;\r
149	}\r
150	\r
151	//\r
152	// Validate controller handle\r
153	//\r
154	Status = gBS->OpenProtocol (\r
155	ControllerHandle,\r
156	&gEfiWinNtIoProtocolGuid,\r
157	&BlockIo,\r
158	gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
159	ControllerHandle,\r
160	EFI_OPEN_PROTOCOL_BY_DRIVER\r
161	);\r
162	\r
163	if (!EFI_ERROR (Status)) {\r
164	gBS->CloseProtocol (\r
165	ControllerHandle,\r
166	&gEfiWinNtIoProtocolGuid,\r
167	gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
168	ControllerHandle\r
169	);\r
170	\r
171	return EFI_UNSUPPORTED;\r
172	}\r
173	\r
174	if (Status == EFI_UNSUPPORTED) {\r
175	return Status;\r
176	} else if (Status != EFI_ALREADY_STARTED) {\r
177	return EFI_INVALID_PARAMETER;\r
178	}\r
179	\r
180	*ActionRequired = EfiDriverConfigurationActionNone;\r
181	return EFI_SUCCESS;\r
182	}\r
183	\r
184	EFI_STATUS\r
185	EFIAPI\r
186	WinNtBlockIoDriverConfigurationOptionsValid (\r
187	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
188	IN EFI_HANDLE ControllerHandle,\r
189	IN EFI_HANDLE ChildHandle OPTIONAL\r
190	)\r
191	/*++\r
192	\r
193	Routine Description:\r
194	Tests to see if a controller's current configuration options are valid.\r
195	\r
196	Arguments:\r
197	This - A pointer to the EFI_DRIVER_CONFIGURATION_PROTOCOL instance.\r
198	ControllerHandle - The handle of the controller to test if it's current\r
199	configuration options are valid.\r
200	ChildHandle - The handle of the child controller to test if it's current\r
201	configuration options are valid. This is an optional\r
202	parameter that may be NULL. It will be NULL for device\r
203	drivers. It will also be NULL for a bus drivers that wish\r
204	to test the configuration options for the bus controller.\r
205	It will not be NULL for a bus driver that wishes to test\r
206	configuration options for one of its child controllers.\r
207	\r
208	Returns:\r
209	EFI_SUCCESS - The controller specified by ControllerHandle and\r
210	ChildHandle that is being managed by the driver\r
211	specified by This has a valid set of configuration\r
212	options.\r
213	EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r
214	EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.\r
215	EFI_UNSUPPORTED - The driver specified by This is not currently\r
216	managing the controller specified by ControllerHandle\r
217	and ChildHandle.\r
218	EFI_DEVICE_ERROR - The controller specified by ControllerHandle and\r
219	ChildHandle that is being managed by the driver\r
220	specified by This has an invalid set of configuration\r
221	options.\r
222	\r
223	--*/\r
224	{\r
225	EFI_STATUS Status;\r
226	EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
227	\r
228	if (ChildHandle != NULL) {\r
229	return EFI_UNSUPPORTED;\r
230	}\r
231	\r
232	if (ControllerHandle == NULL) {\r
233	return EFI_INVALID_PARAMETER;\r
234	}\r
235	\r
236	//\r
237	// Validate controller handle\r
238	//\r
239	Status = gBS->OpenProtocol (\r
240	ControllerHandle,\r
241	&gEfiWinNtIoProtocolGuid,\r
242	&BlockIo,\r
243	gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
244	ControllerHandle,\r
245	EFI_OPEN_PROTOCOL_BY_DRIVER\r
246	);\r
247	\r
248	if (!EFI_ERROR (Status)) {\r
249	gBS->CloseProtocol (\r
250	ControllerHandle,\r
251	&gEfiWinNtIoProtocolGuid,\r
252	gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
253	ControllerHandle\r
254	);\r
255	\r
256	return EFI_UNSUPPORTED;\r
257	}\r
258	\r
259	if (Status == EFI_UNSUPPORTED) {\r
260	return Status;\r
261	} else if (Status != EFI_ALREADY_STARTED) {\r
262	return EFI_INVALID_PARAMETER;\r
263	}\r
264	\r
265	return EFI_SUCCESS;\r
266	}\r
267	\r
268	EFI_STATUS\r
269	EFIAPI\r
270	WinNtBlockIoDriverConfigurationForceDefaults (\r
271	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
272	IN EFI_HANDLE ControllerHandle,\r
273	IN EFI_HANDLE ChildHandle OPTIONAL,\r
274	IN UINT32 DefaultType,\r
275	OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED *ActionRequired\r
276	)\r
277	/*++\r
278	\r
279	Routine Description:\r
280	Forces a driver to set the default configuration options for a controller.\r
281	\r
282	Arguments:\r
283	This - A pointer to the EFI_DRIVER_CONFIGURATION_ PROTOCOL instance.\r
284	ControllerHandle - The handle of the controller to force default configuration options on.\r
285	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
286	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
287	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
288	\r
289	Returns:\r
290	EFI_SUCCESS - The driver specified by This successfully forced the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
291	EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r
292	EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.\r
293	EFI_INVALID_PARAMETER - ActionRequired is NULL.\r
294	EFI_UNSUPPORTED - The driver specified by This does not support forcing the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
295	EFI_UNSUPPORTED - The driver specified by This does not support the configuration type specified by DefaultType.\r
296	EFI_DEVICE_ERROR - A device error occurred while attempt to force the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
297	EFI_OUT_RESOURCES - There are not enough resources available to force the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
298	\r
299	--*/\r
300	{\r
301	EFI_STATUS Status;\r
302	EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
303	\r
304	if (ChildHandle != NULL) {\r
305	return EFI_UNSUPPORTED;\r
306	}\r
307	\r
308	if (ActionRequired == NULL \|\| ControllerHandle == NULL) {\r
309	return EFI_INVALID_PARAMETER;\r
310	}\r
311	\r
312	//\r
313	// Validate controller handle\r
314	//\r
315	Status = gBS->OpenProtocol (\r
316	ControllerHandle,\r
317	&gEfiWinNtIoProtocolGuid,\r
318	&BlockIo,\r
319	gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
320	ControllerHandle,\r
321	EFI_OPEN_PROTOCOL_BY_DRIVER\r
322	);\r
323	\r
324	if (!EFI_ERROR (Status)) {\r
325	gBS->CloseProtocol (\r
326	ControllerHandle,\r
327	&gEfiWinNtIoProtocolGuid,\r
328	gWinNtBlockIoDriverBinding.DriverBindingHandle,\r
329	ControllerHandle\r
330	);\r
331	\r
332	return EFI_UNSUPPORTED;\r
333	}\r
334	\r
335	if (Status == EFI_UNSUPPORTED) {\r
336	return Status;\r
337	} else if (Status != EFI_ALREADY_STARTED) {\r
338	return EFI_INVALID_PARAMETER;\r
339	}\r
340	\r
341	*ActionRequired = EfiDriverConfigurationActionNone;\r
342	return EFI_SUCCESS;\r
343	}\r