[mirror_edk2.git] / InOsEmuPkg / EmuBlockIoDxe / DriverConfiguration.c

/**@file\r
\r
Copyright (c) 2006, 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
Module Name:\r
\r
  DriverConfiguration.c\r
\r
Abstract:\r
\r
**/\r
\r
#include "EmuBlockIo.h"\r
\r
//\r
// EFI Driver Configuration Functions\r
//\r
EFI_STATUS\r
EFIAPI\r
EmuBlockIoDriverConfigurationSetOptions (\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
EmuBlockIoDriverConfigurationOptionsValid (\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
EmuBlockIoDriverConfigurationForceDefaults (\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 gEmuBlockIoDriverConfiguration = {\r
  EmuBlockIoDriverConfigurationSetOptions,\r
  EmuBlockIoDriverConfigurationOptionsValid,\r
  EmuBlockIoDriverConfigurationForceDefaults,\r
  "eng"\r
};\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
EFI_STATUS\r
EFIAPI\r
EmuBlockIoDriverConfigurationSetOptions (\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            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
                  &gEmuIoThunkProtocolGuid,\r
                  (VOID **)&BlockIo,\r
                  gEmuBlockIoDriverBinding.DriverBindingHandle,\r
                  ControllerHandle,\r
                  EFI_OPEN_PROTOCOL_BY_DRIVER\r
                  );\r
\r
  if (!EFI_ERROR (Status)) {\r
    gBS->CloseProtocol (\r
          ControllerHandle,\r
          &gEmuIoThunkProtocolGuid,\r
          gEmuBlockIoDriverBinding.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
/*++\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
EFI_STATUS\r
EFIAPI\r
EmuBlockIoDriverConfigurationOptionsValid (\r
  IN  EFI_DRIVER_CONFIGURATION_PROTOCOL               *This,\r
  IN  EFI_HANDLE                                      ControllerHandle,\r
  IN  EFI_HANDLE                                      ChildHandle  OPTIONAL\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
                  &gEmuIoThunkProtocolGuid,\r
                  (VOID **)&BlockIo,\r
                  gEmuBlockIoDriverBinding.DriverBindingHandle,\r
                  ControllerHandle,\r
                  EFI_OPEN_PROTOCOL_BY_DRIVER\r
                  );\r
\r
  if (!EFI_ERROR (Status)) {\r
    gBS->CloseProtocol (\r
          ControllerHandle,\r
          &gEmuIoThunkProtocolGuid,\r
          gEmuBlockIoDriverBinding.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
/*++\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
EFI_STATUS\r
EFIAPI\r
EmuBlockIoDriverConfigurationForceDefaults (\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
  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
                  &gEmuIoThunkProtocolGuid,\r
                  (VOID **)&BlockIo,\r
                  gEmuBlockIoDriverBinding.DriverBindingHandle,\r
                  ControllerHandle,\r
                  EFI_OPEN_PROTOCOL_BY_DRIVER\r
                  );\r
\r
  if (!EFI_ERROR (Status)) {\r
    gBS->CloseProtocol (\r
          ControllerHandle,\r
          &gEmuIoThunkProtocolGuid,\r
          gEmuBlockIoDriverBinding.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
d59326d3	1	/**@file\r
	2	\r
	3	Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r
	4	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 "EmuBlockIo.h"\r
	21	\r
	22	//\r
	23	// EFI Driver Configuration Functions\r
	24	//\r
	25	EFI_STATUS\r
	26	EFIAPI\r
	27	EmuBlockIoDriverConfigurationSetOptions (\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	EmuBlockIoDriverConfigurationOptionsValid (\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	EmuBlockIoDriverConfigurationForceDefaults (\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 gEmuBlockIoDriverConfiguration = {\r
	57	EmuBlockIoDriverConfigurationSetOptions,\r
	58	EmuBlockIoDriverConfigurationOptionsValid,\r
	59	EmuBlockIoDriverConfigurationForceDefaults,\r
	60	"eng"\r
	61	};\r
	62	\r
	63	/*++\r
	64	\r
65	Routine Description:\r
66	Allows the user to set controller specific options for a controller that a \r
67	driver is currently managing.\r
68	\r
69	Arguments:\r
70	This - A pointer to the EFI_DRIVER_CONFIGURATION_ PROTOCOL instance.\r
71	ControllerHandle - The handle of the controller to set options on.\r
72	ChildHandle - The handle of the child controller to set options on. This\r
73	is an optional parameter that may be NULL. It will be NULL \r
74	for device drivers, and for a bus drivers that wish to set \r
75	options for the bus controller. It will not be NULL for a \r
76	bus driver that wishes to set options for one of its child \r
77	controllers.\r
78	Language - A pointer to a three character ISO 639-2 language identifier.\r
79	This is the language of the user interface that should be \r
80	presented to the user, and it must match one of the languages \r
81	specified in SupportedLanguages. The number of languages \r
82	supported by a driver is up to the driver writer.\r
83	ActionRequired - A pointer to the action that the calling agent is required \r
84	to perform when this function returns. See "Related \r
85	Definitions" for a list of the actions that the calling \r
86	agent is required to perform prior to accessing \r
87	ControllerHandle again.\r
88	\r
89	Returns:\r
90	EFI_SUCCESS - The driver specified by This successfully set the \r
91	configuration options for the controller specified \r
92	by ControllerHandle..\r
93	EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r
94	EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.\r
95	EFI_INVALID_PARAMETER - ActionRequired is NULL.\r
96	EFI_UNSUPPORTED - The driver specified by This does not support setting \r
97	configuration options for the controller specified by \r
98	ControllerHandle and ChildHandle.\r
99	EFI_UNSUPPORTED - The driver specified by This does not support the \r
100	language specified by Language.\r
101	EFI_DEVICE_ERROR - A device error occurred while attempt to set the \r
102	configuration options for the controller specified \r
103	by ControllerHandle and ChildHandle.\r
104	EFI_OUT_RESOURCES - There are not enough resources available to set the \r
105	configuration options for the controller specified \r
106	by ControllerHandle and ChildHandle.\r
107	\r
108	--*/\r
109	EFI_STATUS\r
110	EFIAPI\r
111	EmuBlockIoDriverConfigurationSetOptions (\r
112	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
113	IN EFI_HANDLE ControllerHandle,\r
114	IN EFI_HANDLE ChildHandle OPTIONAL,\r
115	IN CHAR8 *Language,\r
116	OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED *ActionRequired\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	&gEmuIoThunkProtocolGuid,\r
152	(VOID **)&BlockIo,\r
153	gEmuBlockIoDriverBinding.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	&gEmuIoThunkProtocolGuid,\r
162	gEmuBlockIoDriverBinding.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	/*++\r
180	\r
181	Routine Description:\r
182	Tests to see if a controller's current configuration options are valid.\r
183	\r
184	Arguments:\r
185	This - A pointer to the EFI_DRIVER_CONFIGURATION_PROTOCOL instance.\r
186	ControllerHandle - The handle of the controller to test if it's current \r
187	configuration options are valid.\r
188	ChildHandle - The handle of the child controller to test if it's current\r
189	configuration options are valid. This is an optional \r
190	parameter that may be NULL. It will be NULL for device \r
191	drivers. It will also be NULL for a bus drivers that wish\r
192	to test the configuration options for the bus controller.\r
193	It will not be NULL for a bus driver that wishes to test \r
194	configuration options for one of its child controllers.\r
195	\r
196	Returns:\r
197	EFI_SUCCESS - The controller specified by ControllerHandle and \r
198	ChildHandle that is being managed by the driver \r
199	specified by This has a valid set of configuration\r
200	options.\r
201	EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r
202	EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.\r
203	EFI_UNSUPPORTED - The driver specified by This is not currently \r
204	managing the controller specified by ControllerHandle \r
205	and ChildHandle.\r
206	EFI_DEVICE_ERROR - The controller specified by ControllerHandle and \r
207	ChildHandle that is being managed by the driver \r
208	specified by This has an invalid set of configuration \r
209	options.\r
210	\r
211	--*/\r
212	EFI_STATUS\r
213	EFIAPI\r
214	EmuBlockIoDriverConfigurationOptionsValid (\r
215	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
216	IN EFI_HANDLE ControllerHandle,\r
217	IN EFI_HANDLE ChildHandle OPTIONAL\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	&gEmuIoThunkProtocolGuid,\r
237	(VOID **)&BlockIo,\r
238	gEmuBlockIoDriverBinding.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	&gEmuIoThunkProtocolGuid,\r
247	gEmuBlockIoDriverBinding.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	/*++\r
264	\r
265	Routine Description:\r
266	Forces a driver to set the default configuration options for a controller.\r
267	\r
268	Arguments:\r
269	This - A pointer to the EFI_DRIVER_CONFIGURATION_ PROTOCOL instance.\r
270	ControllerHandle - The handle of the controller to force default configuration options on.\r
271	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
272	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
273	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
274	\r
275	Returns:\r
276	EFI_SUCCESS - The driver specified by This successfully forced the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
277	EFI_INVALID_PARAMETER - ControllerHandle is not a valid EFI_HANDLE.\r
278	EFI_INVALID_PARAMETER - ChildHandle is not NULL and it is not a valid EFI_HANDLE.\r
279	EFI_INVALID_PARAMETER - ActionRequired is NULL.\r
280	EFI_UNSUPPORTED - The driver specified by This does not support forcing the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
281	EFI_UNSUPPORTED - The driver specified by This does not support the configuration type specified by DefaultType.\r
282	EFI_DEVICE_ERROR - A device error occurred while attempt to force the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
283	EFI_OUT_RESOURCES - There are not enough resources available to force the default configuration options on the controller specified by ControllerHandle and ChildHandle.\r
284	\r
285	--*/\r
286	EFI_STATUS\r
287	EFIAPI\r
288	EmuBlockIoDriverConfigurationForceDefaults (\r
289	IN EFI_DRIVER_CONFIGURATION_PROTOCOL *This,\r
290	IN EFI_HANDLE ControllerHandle,\r
291	IN EFI_HANDLE ChildHandle OPTIONAL,\r
292	IN UINT32 DefaultType,\r
293	OUT EFI_DRIVER_CONFIGURATION_ACTION_REQUIRED *ActionRequired\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	&gEmuIoThunkProtocolGuid,\r
313	(VOID **)&BlockIo,\r
314	gEmuBlockIoDriverBinding.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	&gEmuIoThunkProtocolGuid,\r
323	gEmuBlockIoDriverBinding.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