]>
Commit | Line | Data |
---|---|---|
d59326d3 | 1 | /**@file\r |
2 | \r | |
1e571882 | 3 | Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>\r |
e3ba31da | 4 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
d59326d3 | 5 | bbe\r |
6 | **/\r | |
7 | \r | |
8 | #include "EmuBlockIo.h"\r | |
9 | \r | |
d59326d3 | 10 | /**\r |
11 | Reset the block device hardware.\r | |
12 | \r | |
13 | @param[in] This Indicates a pointer to the calling context.\r | |
14 | @param[in] ExtendedVerification Indicates that the driver may perform a more\r | |
15 | exhausive verfication operation of the device\r | |
16 | during reset.\r | |
17 | \r | |
18 | @retval EFI_SUCCESS The device was reset.\r | |
19 | @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r | |
20 | not be reset.\r | |
21 | \r | |
22 | **/\r | |
23 | EFI_STATUS\r | |
24 | EFIAPI\r | |
25 | EmuBlockIo2Reset (\r | |
26 | IN EFI_BLOCK_IO2_PROTOCOL *This,\r | |
27 | IN BOOLEAN ExtendedVerification\r | |
28 | )\r | |
29 | {\r | |
a550d468 MK |
30 | EFI_STATUS Status;\r |
31 | EMU_BLOCK_IO_PRIVATE *Private;\r | |
32 | EFI_TPL OldTpl;\r | |
d59326d3 | 33 | \r |
34 | Private = EMU_BLOCK_IO2_PRIVATE_DATA_FROM_THIS (This);\r | |
35 | \r | |
36 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
37 | \r | |
38 | Status = Private->Io->Reset (Private->Io, ExtendedVerification);\r | |
39 | \r | |
40 | gBS->RestoreTPL (OldTpl);\r | |
41 | return Status;\r | |
42 | }\r | |
43 | \r | |
44 | /**\r | |
45 | Read BufferSize bytes from Lba into Buffer.\r | |
d18d8a1d | 46 | \r |
d59326d3 | 47 | This function reads the requested number of blocks from the device. All the\r |
48 | blocks are read, or an error is returned.\r | |
49 | If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_or EFI_MEDIA_CHANGED is returned and\r | |
50 | non-blocking I/O is being used, the Event associated with this request will\r | |
51 | not be signaled.\r | |
52 | \r | |
53 | @param[in] This Indicates a pointer to the calling context.\r | |
d18d8a1d | 54 | @param[in] MediaId Id of the media, changes every time the media is\r |
d59326d3 | 55 | replaced.\r |
56 | @param[in] Lba The starting Logical Block Address to read from.\r | |
79e4f2a5 | 57 | @param[in, out] Token A pointer to the token associated with the transaction.\r |
d18d8a1d | 58 | @param[in] BufferSize Size of Buffer, must be a multiple of device block size.\r |
59 | @param[out] Buffer A pointer to the destination buffer for the data. The\r | |
60 | caller is responsible for either having implicit or\r | |
d59326d3 | 61 | explicit ownership of the buffer.\r |
62 | \r | |
63 | @retval EFI_SUCCESS The read request was queued if Token->Event is\r | |
64 | not NULL.The data was read correctly from the\r | |
65 | device if the Token->Event is NULL.\r | |
66 | @retval EFI_DEVICE_ERROR The device reported an error while performing\r | |
67 | the read.\r | |
68 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
69 | @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r | |
70 | @retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of the\r | |
71 | intrinsic block size of the device.\r | |
d18d8a1d | 72 | @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,\r |
d59326d3 | 73 | or the buffer is not on proper alignment.\r |
74 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r | |
75 | of resources.\r | |
76 | **/\r | |
77 | EFI_STATUS\r | |
78 | EFIAPI\r | |
79 | EmuBlockIo2ReadBlocksEx (\r | |
a550d468 MK |
80 | IN EFI_BLOCK_IO2_PROTOCOL *This,\r |
81 | IN UINT32 MediaId,\r | |
82 | IN EFI_LBA LBA,\r | |
83 | IN OUT EFI_BLOCK_IO2_TOKEN *Token,\r | |
84 | IN UINTN BufferSize,\r | |
85 | OUT VOID *Buffer\r | |
d59326d3 | 86 | )\r |
87 | {\r | |
a550d468 MK |
88 | EFI_STATUS Status;\r |
89 | EMU_BLOCK_IO_PRIVATE *Private;\r | |
90 | EFI_TPL OldTpl;\r | |
d59326d3 | 91 | \r |
92 | Private = EMU_BLOCK_IO2_PRIVATE_DATA_FROM_THIS (This);\r | |
93 | \r | |
94 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
95 | \r | |
96 | Status = Private->Io->ReadBlocks (Private->Io, MediaId, LBA, Token, BufferSize, Buffer);\r | |
97 | \r | |
98 | gBS->RestoreTPL (OldTpl);\r | |
99 | return Status;\r | |
100 | }\r | |
101 | \r | |
d59326d3 | 102 | /**\r |
103 | Write BufferSize bytes from Lba into Buffer.\r | |
104 | \r | |
105 | This function writes the requested number of blocks to the device. All blocks\r | |
106 | are written, or an error is returned.If EFI_DEVICE_ERROR, EFI_NO_MEDIA,\r | |
107 | EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED is returned and non-blocking I/O is\r | |
108 | being used, the Event associated with this request will not be signaled.\r | |
109 | \r | |
110 | @param[in] This Indicates a pointer to the calling context.\r | |
111 | @param[in] MediaId The media ID that the write request is for.\r | |
112 | @param[in] Lba The starting logical block address to be written. The\r | |
113 | caller is responsible for writing to only legitimate\r | |
114 | locations.\r | |
115 | @param[in, out] Token A pointer to the token associated with the transaction.\r | |
116 | @param[in] BufferSize Size of Buffer, must be a multiple of device block size.\r | |
117 | @param[in] Buffer A pointer to the source buffer for the data.\r | |
118 | \r | |
119 | @retval EFI_SUCCESS The write request was queued if Event is not NULL.\r | |
120 | The data was written correctly to the device if\r | |
121 | the Event is NULL.\r | |
122 | @retval EFI_WRITE_PROTECTED The device can not be written to.\r | |
123 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
124 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
125 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
126 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
d18d8a1d | 127 | @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,\r |
d59326d3 | 128 | or the buffer is not on proper alignment.\r |
129 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r | |
130 | of resources.\r | |
131 | \r | |
132 | **/\r | |
133 | EFI_STATUS\r | |
d18d8a1d | 134 | EFIAPI\r |
d59326d3 | 135 | EmuBlockIo2WriteBlocksEx (\r |
136 | IN EFI_BLOCK_IO2_PROTOCOL *This,\r | |
a550d468 MK |
137 | IN UINT32 MediaId,\r |
138 | IN EFI_LBA LBA,\r | |
139 | IN OUT EFI_BLOCK_IO2_TOKEN *Token,\r | |
140 | IN UINTN BufferSize,\r | |
141 | IN VOID *Buffer\r | |
d59326d3 | 142 | )\r |
143 | {\r | |
a550d468 MK |
144 | EFI_STATUS Status;\r |
145 | EMU_BLOCK_IO_PRIVATE *Private;\r | |
146 | EFI_TPL OldTpl;\r | |
d59326d3 | 147 | \r |
148 | Private = EMU_BLOCK_IO2_PRIVATE_DATA_FROM_THIS (This);\r | |
149 | \r | |
150 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
151 | \r | |
152 | Status = Private->Io->WriteBlocks (Private->Io, MediaId, LBA, Token, BufferSize, Buffer);\r | |
153 | \r | |
154 | gBS->RestoreTPL (OldTpl);\r | |
155 | return Status;\r | |
156 | }\r | |
157 | \r | |
d59326d3 | 158 | /**\r |
159 | Flush the Block Device.\r | |
d18d8a1d | 160 | \r |
d59326d3 | 161 | If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED\r |
162 | is returned and non-blocking I/O is being used, the Event associated with\r | |
d18d8a1d | 163 | this request will not be signaled.\r |
d59326d3 | 164 | \r |
165 | @param[in] This Indicates a pointer to the calling context.\r | |
166 | @param[in,out] Token A pointer to the token associated with the transaction\r | |
167 | \r | |
168 | @retval EFI_SUCCESS The flush request was queued if Event is not NULL.\r | |
169 | All outstanding data was written correctly to the\r | |
170 | device if the Event is NULL.\r | |
171 | @retval EFI_DEVICE_ERROR The device reported an error while writting back\r | |
172 | the data.\r | |
173 | @retval EFI_WRITE_PROTECTED The device cannot be written to.\r | |
174 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
175 | @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r | |
176 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r | |
177 | of resources.\r | |
178 | \r | |
179 | **/\r | |
180 | EFI_STATUS\r | |
181 | EFIAPI\r | |
182 | EmuBlockIo2Flush (\r | |
a550d468 MK |
183 | IN EFI_BLOCK_IO2_PROTOCOL *This,\r |
184 | IN OUT EFI_BLOCK_IO2_TOKEN *Token\r | |
d59326d3 | 185 | )\r |
186 | {\r | |
a550d468 MK |
187 | EFI_STATUS Status;\r |
188 | EMU_BLOCK_IO_PRIVATE *Private;\r | |
189 | EFI_TPL OldTpl;\r | |
d59326d3 | 190 | \r |
191 | Private = EMU_BLOCK_IO2_PRIVATE_DATA_FROM_THIS (This);\r | |
192 | \r | |
193 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
194 | \r | |
195 | Status = Private->Io->FlushBlocks (Private->Io, Token);\r | |
196 | \r | |
197 | gBS->RestoreTPL (OldTpl);\r | |
198 | return Status;\r | |
199 | }\r | |
200 | \r | |
d59326d3 | 201 | /**\r |
202 | Reset the Block Device.\r | |
203 | \r | |
204 | @param This Indicates a pointer to the calling context.\r | |
205 | @param ExtendedVerification Driver may perform diagnostics on reset.\r | |
206 | \r | |
207 | @retval EFI_SUCCESS The device was reset.\r | |
208 | @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r | |
209 | not be reset.\r | |
210 | \r | |
211 | **/\r | |
212 | EFI_STATUS\r | |
213 | EFIAPI\r | |
214 | EmuBlockIoReset (\r | |
a550d468 MK |
215 | IN EFI_BLOCK_IO_PROTOCOL *This,\r |
216 | IN BOOLEAN ExtendedVerification\r | |
d59326d3 | 217 | )\r |
218 | {\r | |
a550d468 MK |
219 | EFI_STATUS Status;\r |
220 | EMU_BLOCK_IO_PRIVATE *Private;\r | |
221 | EFI_TPL OldTpl;\r | |
d59326d3 | 222 | \r |
033d0e5f | 223 | Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);\r |
d59326d3 | 224 | \r |
225 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
226 | \r | |
227 | Status = Private->Io->Reset (Private->Io, ExtendedVerification);\r | |
228 | \r | |
229 | gBS->RestoreTPL (OldTpl);\r | |
230 | return Status;\r | |
231 | }\r | |
232 | \r | |
d59326d3 | 233 | /**\r |
234 | Read BufferSize bytes from Lba into Buffer.\r | |
235 | \r | |
236 | @param This Indicates a pointer to the calling context.\r | |
237 | @param MediaId Id of the media, changes every time the media is replaced.\r | |
238 | @param Lba The starting Logical Block Address to read from\r | |
239 | @param BufferSize Size of Buffer, must be a multiple of device block size.\r | |
240 | @param Buffer A pointer to the destination buffer for the data. The caller is\r | |
241 | responsible for either having implicit or explicit ownership of the buffer.\r | |
242 | \r | |
243 | @retval EFI_SUCCESS The data was read correctly from the device.\r | |
244 | @retval EFI_DEVICE_ERROR The device reported an error while performing the read.\r | |
245 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
246 | @retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.\r | |
247 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
d18d8a1d | 248 | @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,\r |
d59326d3 | 249 | or the buffer is not on proper alignment.\r |
250 | \r | |
251 | **/\r | |
252 | EFI_STATUS\r | |
253 | EFIAPI\r | |
033d0e5f | 254 | EmuBlockIoReadBlocks (\r |
a550d468 MK |
255 | IN EFI_BLOCK_IO_PROTOCOL *This,\r |
256 | IN UINT32 MediaId,\r | |
257 | IN EFI_LBA Lba,\r | |
258 | IN UINTN BufferSize,\r | |
259 | OUT VOID *Buffer\r | |
d59326d3 | 260 | )\r |
261 | {\r | |
a550d468 MK |
262 | EFI_STATUS Status;\r |
263 | EMU_BLOCK_IO_PRIVATE *Private;\r | |
264 | EFI_TPL OldTpl;\r | |
265 | EFI_BLOCK_IO2_TOKEN Token;\r | |
d59326d3 | 266 | \r |
033d0e5f | 267 | Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);\r |
d59326d3 | 268 | \r |
269 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
270 | \r | |
271 | Token.Event = NULL;\r | |
a550d468 | 272 | Status = Private->Io->ReadBlocks (Private->Io, MediaId, Lba, &Token, BufferSize, Buffer);\r |
d59326d3 | 273 | \r |
274 | gBS->RestoreTPL (OldTpl);\r | |
275 | return Status;\r | |
276 | }\r | |
277 | \r | |
d59326d3 | 278 | /**\r |
279 | Write BufferSize bytes from Lba into Buffer.\r | |
280 | \r | |
281 | @param This Indicates a pointer to the calling context.\r | |
282 | @param MediaId The media ID that the write request is for.\r | |
283 | @param Lba The starting logical block address to be written. The caller is\r | |
284 | responsible for writing to only legitimate locations.\r | |
285 | @param BufferSize Size of Buffer, must be a multiple of device block size.\r | |
286 | @param Buffer A pointer to the source buffer for the data.\r | |
287 | \r | |
288 | @retval EFI_SUCCESS The data was written correctly to the device.\r | |
289 | @retval EFI_WRITE_PROTECTED The device can not be written to.\r | |
290 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
291 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
292 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
293 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
d18d8a1d | 294 | @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,\r |
d59326d3 | 295 | or the buffer is not on proper alignment.\r |
296 | \r | |
297 | **/\r | |
298 | EFI_STATUS\r | |
299 | EFIAPI\r | |
300 | EmuBlockIoWriteBlocks (\r | |
a550d468 MK |
301 | IN EFI_BLOCK_IO_PROTOCOL *This,\r |
302 | IN UINT32 MediaId,\r | |
303 | IN EFI_LBA Lba,\r | |
304 | IN UINTN BufferSize,\r | |
305 | IN VOID *Buffer\r | |
d59326d3 | 306 | )\r |
307 | {\r | |
a550d468 MK |
308 | EFI_STATUS Status;\r |
309 | EMU_BLOCK_IO_PRIVATE *Private;\r | |
310 | EFI_TPL OldTpl;\r | |
311 | EFI_BLOCK_IO2_TOKEN Token;\r | |
d59326d3 | 312 | \r |
033d0e5f | 313 | Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);\r |
d59326d3 | 314 | \r |
315 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
316 | \r | |
317 | Token.Event = NULL;\r | |
a550d468 | 318 | Status = Private->Io->WriteBlocks (Private->Io, MediaId, Lba, &Token, BufferSize, Buffer);\r |
d59326d3 | 319 | \r |
320 | gBS->RestoreTPL (OldTpl);\r | |
321 | return Status;\r | |
322 | }\r | |
323 | \r | |
324 | /**\r | |
325 | Flush the Block Device.\r | |
326 | \r | |
327 | @param This Indicates a pointer to the calling context.\r | |
328 | \r | |
329 | @retval EFI_SUCCESS All outstanding data was written to the device\r | |
330 | @retval EFI_DEVICE_ERROR The device reported an error while writting back the data\r | |
331 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
332 | \r | |
333 | **/\r | |
334 | EFI_STATUS\r | |
335 | EFIAPI\r | |
336 | EmuBlockIoFlushBlocks (\r | |
337 | IN EFI_BLOCK_IO_PROTOCOL *This\r | |
338 | )\r | |
339 | {\r | |
a550d468 MK |
340 | EFI_STATUS Status;\r |
341 | EMU_BLOCK_IO_PRIVATE *Private;\r | |
342 | EFI_TPL OldTpl;\r | |
343 | EFI_BLOCK_IO2_TOKEN Token;\r | |
d59326d3 | 344 | \r |
033d0e5f | 345 | Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);\r |
d59326d3 | 346 | \r |
347 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
348 | \r | |
349 | Token.Event = NULL;\r | |
a550d468 | 350 | Status = Private->Io->FlushBlocks (Private->Io, &Token);\r |
d59326d3 | 351 | \r |
352 | gBS->RestoreTPL (OldTpl);\r | |
353 | return Status;\r | |
354 | }\r | |
355 | \r | |
d59326d3 | 356 | /**\r |
d18d8a1d | 357 | Tests to see if this driver supports a given controller. If a child device is provided,\r |
d59326d3 | 358 | it further tests to see if this driver supports creating a handle for the specified child device.\r |
359 | \r | |
d18d8a1d | 360 | This function checks to see if the driver specified by This supports the device specified by\r |
361 | ControllerHandle. Drivers will typically use the device path attached to\r | |
362 | ControllerHandle and/or the services from the bus I/O abstraction attached to\r | |
363 | ControllerHandle to determine if the driver supports ControllerHandle. This function\r | |
364 | may be called many times during platform initialization. In order to reduce boot times, the tests\r | |
365 | performed by this function must be very small, and take as little time as possible to execute. This\r | |
366 | function must not change the state of any hardware devices, and this function must be aware that the\r | |
367 | device specified by ControllerHandle may already be managed by the same driver or a\r | |
368 | different driver. This function must match its calls to AllocatePages() with FreePages(),\r | |
369 | AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().\r | |
370 | Because ControllerHandle may have been previously started by the same driver, if a protocol is\r | |
371 | already in the opened state, then it must not be closed with CloseProtocol(). This is required\r | |
d59326d3 | 372 | to guarantee the state of ControllerHandle is not modified by this function.\r |
373 | \r | |
374 | @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
d18d8a1d | 375 | @param[in] ControllerHandle The handle of the controller to test. This handle\r |
376 | must support a protocol interface that supplies\r | |
d59326d3 | 377 | an I/O abstraction to the driver.\r |
d18d8a1d | 378 | @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This\r |
379 | parameter is ignored by device drivers, and is optional for bus\r | |
380 | drivers. For bus drivers, if this parameter is not NULL, then\r | |
381 | the bus driver must determine if the bus controller specified\r | |
382 | by ControllerHandle and the child controller specified\r | |
383 | by RemainingDevicePath are both supported by this\r | |
d59326d3 | 384 | bus driver.\r |
385 | \r | |
386 | @retval EFI_SUCCESS The device specified by ControllerHandle and\r | |
387 | RemainingDevicePath is supported by the driver specified by This.\r | |
388 | @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and\r | |
389 | RemainingDevicePath is already being managed by the driver\r | |
390 | specified by This.\r | |
391 | @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and\r | |
392 | RemainingDevicePath is already being managed by a different\r | |
393 | driver or an application that requires exclusive access.\r | |
394 | Currently not implemented.\r | |
395 | @retval EFI_UNSUPPORTED The device specified by ControllerHandle and\r | |
396 | RemainingDevicePath is not supported by the driver specified by This.\r | |
397 | **/\r | |
398 | EFI_STATUS\r | |
399 | EFIAPI\r | |
400 | EmuBlockIoDriverBindingSupported (\r | |
401 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
402 | IN EFI_HANDLE Handle,\r | |
403 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
404 | )\r | |
405 | {\r | |
a550d468 MK |
406 | EFI_STATUS Status;\r |
407 | EMU_IO_THUNK_PROTOCOL *EmuIoThunk;\r | |
d59326d3 | 408 | \r |
409 | //\r | |
410 | // Open the IO Abstraction(s) needed to perform the supported test\r | |
411 | //\r | |
412 | Status = gBS->OpenProtocol (\r | |
413 | Handle,\r | |
414 | &gEmuIoThunkProtocolGuid,\r | |
415 | (VOID **)&EmuIoThunk,\r | |
416 | This->DriverBindingHandle,\r | |
417 | Handle,\r | |
418 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
419 | );\r | |
420 | if (EFI_ERROR (Status)) {\r | |
421 | return Status;\r | |
422 | }\r | |
423 | \r | |
424 | //\r | |
425 | // Make sure GUID is for a File System handle.\r | |
426 | //\r | |
427 | Status = EFI_UNSUPPORTED;\r | |
033d0e5f | 428 | if (CompareGuid (EmuIoThunk->Protocol, &gEmuBlockIoProtocolGuid)) {\r |
d59326d3 | 429 | Status = EFI_SUCCESS;\r |
430 | }\r | |
431 | \r | |
432 | //\r | |
433 | // Close the I/O Abstraction(s) used to perform the supported test\r | |
434 | //\r | |
435 | gBS->CloseProtocol (\r | |
a550d468 MK |
436 | Handle,\r |
437 | &gEmuIoThunkProtocolGuid,\r | |
438 | This->DriverBindingHandle,\r | |
439 | Handle\r | |
440 | );\r | |
d59326d3 | 441 | return Status;\r |
442 | }\r | |
443 | \r | |
d59326d3 | 444 | /**\r |
445 | Starts a device controller or a bus controller.\r | |
446 | \r | |
447 | The Start() function is designed to be invoked from the EFI boot service ConnectController().\r | |
d18d8a1d | 448 | As a result, much of the error checking on the parameters to Start() has been moved into this\r |
449 | common boot service. It is legal to call Start() from other locations,\r | |
d59326d3 | 450 | but the following calling restrictions must be followed, or the system behavior will not be deterministic.\r |
451 | 1. ControllerHandle must be a valid EFI_HANDLE.\r | |
452 | 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned\r | |
453 | EFI_DEVICE_PATH_PROTOCOL.\r | |
454 | 3. Prior to calling Start(), the Supported() function for the driver specified by This must\r | |
d18d8a1d | 455 | have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.\r |
d59326d3 | 456 | \r |
457 | @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
d18d8a1d | 458 | @param[in] ControllerHandle The handle of the controller to start. This handle\r |
459 | must support a protocol interface that supplies\r | |
d59326d3 | 460 | an I/O abstraction to the driver.\r |
d18d8a1d | 461 | @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This\r |
462 | parameter is ignored by device drivers, and is optional for bus\r | |
463 | drivers. For a bus driver, if this parameter is NULL, then handles\r | |
464 | for all the children of Controller are created by this driver.\r | |
465 | If this parameter is not NULL and the first Device Path Node is\r | |
466 | not the End of Device Path Node, then only the handle for the\r | |
467 | child device specified by the first Device Path Node of\r | |
d59326d3 | 468 | RemainingDevicePath is created by this driver.\r |
d18d8a1d | 469 | If the first Device Path Node of RemainingDevicePath is\r |
d59326d3 | 470 | the End of Device Path Node, no child handle is created by this\r |
471 | driver.\r | |
472 | \r | |
473 | @retval EFI_SUCCESS The device was started.\r | |
474 | @retval EFI_DEVICE_ERROR The device could not be started due to a device error.Currently not implemented.\r | |
475 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
476 | @retval Others The driver failded to start the device.\r | |
477 | \r | |
478 | **/\r | |
479 | EFI_STATUS\r | |
480 | EFIAPI\r | |
481 | EmuBlockIoDriverBindingStart (\r | |
a550d468 MK |
482 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r |
483 | IN EFI_HANDLE Handle,\r | |
484 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
d59326d3 | 485 | )\r |
486 | {\r | |
a550d468 MK |
487 | EFI_STATUS Status;\r |
488 | EMU_IO_THUNK_PROTOCOL *EmuIoThunk;\r | |
489 | EMU_BLOCK_IO_PRIVATE *Private = NULL;\r | |
d59326d3 | 490 | \r |
491 | //\r | |
492 | // Grab the protocols we need\r | |
493 | //\r | |
d18d8a1d | 494 | \r |
d59326d3 | 495 | Status = gBS->OpenProtocol (\r |
496 | Handle,\r | |
497 | &gEmuIoThunkProtocolGuid,\r | |
498 | (void *)&EmuIoThunk,\r | |
499 | This->DriverBindingHandle,\r | |
500 | Handle,\r | |
501 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
502 | );\r | |
503 | if (EFI_ERROR (Status)) {\r | |
504 | return Status;\r | |
505 | }\r | |
d18d8a1d | 506 | \r |
033d0e5f | 507 | if (!CompareGuid (EmuIoThunk->Protocol, &gEmuBlockIoProtocolGuid)) {\r |
d59326d3 | 508 | Status = EFI_UNSUPPORTED;\r |
509 | goto Done;\r | |
510 | }\r | |
511 | \r | |
512 | Status = EmuIoThunk->Open (EmuIoThunk);\r | |
513 | if (EFI_ERROR (Status)) {\r | |
514 | goto Done;\r | |
515 | }\r | |
516 | \r | |
517 | Private = AllocatePool (sizeof (EMU_BLOCK_IO_PRIVATE));\r | |
518 | if (Private == NULL) {\r | |
519 | goto Done;\r | |
520 | }\r | |
521 | \r | |
522 | Private->Signature = EMU_BLOCK_IO_PRIVATE_SIGNATURE;\r | |
523 | Private->IoThunk = EmuIoThunk;\r | |
524 | Private->Io = EmuIoThunk->Interface;\r | |
033d0e5f | 525 | Private->EfiHandle = Handle;\r |
d18d8a1d | 526 | \r |
d59326d3 | 527 | Private->BlockIo.Revision = EFI_BLOCK_IO_PROTOCOL_REVISION2;\r |
528 | Private->BlockIo.Media = &Private->Media;\r | |
529 | Private->BlockIo.Reset = EmuBlockIoReset;\r | |
530 | Private->BlockIo.ReadBlocks = EmuBlockIoReadBlocks;\r | |
531 | Private->BlockIo.WriteBlocks = EmuBlockIoWriteBlocks;\r | |
532 | Private->BlockIo.FlushBlocks = EmuBlockIoFlushBlocks;\r | |
533 | \r | |
534 | Private->BlockIo2.Media = &Private->Media;\r | |
535 | Private->BlockIo2.Reset = EmuBlockIo2Reset;\r | |
536 | Private->BlockIo2.ReadBlocksEx = EmuBlockIo2ReadBlocksEx;\r | |
537 | Private->BlockIo2.WriteBlocksEx = EmuBlockIo2WriteBlocksEx;\r | |
63947cc4 | 538 | Private->BlockIo2.FlushBlocksEx = EmuBlockIo2Flush;\r |
d59326d3 | 539 | \r |
540 | Private->ControllerNameTable = NULL;\r | |
541 | \r | |
542 | Status = Private->Io->CreateMapping (Private->Io, &Private->Media);\r | |
543 | if (EFI_ERROR (Status)) {\r | |
544 | goto Done;\r | |
545 | }\r | |
546 | \r | |
547 | AddUnicodeString2 (\r | |
548 | "eng",\r | |
549 | gEmuBlockIoComponentName.SupportedLanguages,\r | |
550 | &Private->ControllerNameTable,\r | |
551 | EmuIoThunk->ConfigString,\r | |
552 | TRUE\r | |
553 | );\r | |
d18d8a1d | 554 | \r |
d59326d3 | 555 | AddUnicodeString2 (\r |
556 | "en",\r | |
557 | gEmuBlockIoComponentName2.SupportedLanguages,\r | |
558 | &Private->ControllerNameTable,\r | |
559 | EmuIoThunk->ConfigString,\r | |
560 | FALSE\r | |
561 | );\r | |
562 | \r | |
563 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
564 | &Handle,\r | |
a550d468 MK |
565 | &gEfiBlockIoProtocolGuid,\r |
566 | &Private->BlockIo,\r | |
567 | &gEfiBlockIo2ProtocolGuid,\r | |
568 | &Private->BlockIo2,\r | |
d59326d3 | 569 | NULL\r |
570 | );\r | |
571 | \r | |
572 | Done:\r | |
573 | if (EFI_ERROR (Status)) {\r | |
574 | if (Private != NULL) {\r | |
575 | if (Private->ControllerNameTable != NULL) {\r | |
576 | FreeUnicodeStringTable (Private->ControllerNameTable);\r | |
577 | }\r | |
d18d8a1d | 578 | \r |
d59326d3 | 579 | gBS->FreePool (Private);\r |
d59326d3 | 580 | }\r |
d18d8a1d | 581 | \r |
d59326d3 | 582 | gBS->CloseProtocol (\r |
a550d468 MK |
583 | Handle,\r |
584 | &gEmuIoThunkProtocolGuid,\r | |
585 | This->DriverBindingHandle,\r | |
586 | Handle\r | |
587 | );\r | |
d59326d3 | 588 | }\r |
589 | \r | |
590 | return Status;\r | |
591 | }\r | |
592 | \r | |
d59326d3 | 593 | /**\r |
594 | Stops a device controller or a bus controller.\r | |
d18d8a1d | 595 | \r |
596 | The Stop() function is designed to be invoked from the EFI boot service DisconnectController().\r | |
597 | As a result, much of the error checking on the parameters to Stop() has been moved\r | |
598 | into this common boot service. It is legal to call Stop() from other locations,\r | |
d59326d3 | 599 | but the following calling restrictions must be followed, or the system behavior will not be deterministic.\r |
600 | 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this\r | |
601 | same driver's Start() function.\r | |
602 | 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid\r | |
603 | EFI_HANDLE. In addition, all of these handles must have been created in this driver's\r | |
604 | Start() function, and the Start() function must have called OpenProtocol() on\r | |
605 | ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r | |
d18d8a1d | 606 | \r |
d59326d3 | 607 | @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r |
d18d8a1d | 608 | @param[in] ControllerHandle A handle to the device being stopped. The handle must\r |
609 | support a bus specific I/O protocol for the driver\r | |
d59326d3 | 610 | to use to stop the device.\r |
611 | @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.\r | |
d18d8a1d | 612 | @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL\r |
d59326d3 | 613 | if NumberOfChildren is 0.\r |
614 | \r | |
615 | @retval EFI_SUCCESS The device was stopped.\r | |
616 | @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r | |
617 | \r | |
618 | **/\r | |
619 | EFI_STATUS\r | |
620 | EFIAPI\r | |
621 | EmuBlockIoDriverBindingStop (\r | |
622 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
623 | IN EFI_HANDLE Handle,\r | |
624 | IN UINTN NumberOfChildren,\r | |
625 | IN EFI_HANDLE *ChildHandleBuffer\r | |
626 | )\r | |
627 | {\r | |
a550d468 MK |
628 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r |
629 | EFI_STATUS Status;\r | |
630 | EMU_BLOCK_IO_PRIVATE *Private;\r | |
d59326d3 | 631 | \r |
632 | //\r | |
633 | // Get our context back\r | |
634 | //\r | |
635 | Status = gBS->OpenProtocol (\r | |
636 | Handle,\r | |
637 | &gEfiBlockIoProtocolGuid,\r | |
638 | (void *)&BlockIo,\r | |
639 | This->DriverBindingHandle,\r | |
640 | Handle,\r | |
641 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
642 | );\r | |
643 | if (EFI_ERROR (Status)) {\r | |
644 | return EFI_UNSUPPORTED;\r | |
645 | }\r | |
646 | \r | |
647 | Private = EMU_BLOCK_IO_PRIVATE_DATA_FROM_THIS (BlockIo);\r | |
d59326d3 | 648 | \r |
649 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
650 | Private->EfiHandle,\r | |
a550d468 MK |
651 | &gEfiBlockIoProtocolGuid,\r |
652 | &Private->BlockIo,\r | |
653 | &gEfiBlockIo2ProtocolGuid,\r | |
654 | &Private->BlockIo2,\r | |
d59326d3 | 655 | NULL\r |
656 | );\r | |
657 | if (!EFI_ERROR (Status)) {\r | |
658 | Status = gBS->CloseProtocol (\r | |
659 | Handle,\r | |
660 | &gEmuIoThunkProtocolGuid,\r | |
661 | This->DriverBindingHandle,\r | |
662 | Handle\r | |
663 | );\r | |
1e571882 RN |
664 | ASSERT_EFI_ERROR (Status);\r |
665 | //\r | |
666 | // Destroy the IO interface.\r | |
667 | //\r | |
668 | Status = Private->IoThunk->Close (Private->IoThunk);\r | |
669 | ASSERT_EFI_ERROR (Status);\r | |
d59326d3 | 670 | //\r |
671 | // Free our instance data\r | |
672 | //\r | |
673 | FreeUnicodeStringTable (Private->ControllerNameTable);\r | |
1e571882 | 674 | FreePool (Private);\r |
d59326d3 | 675 | }\r |
676 | \r | |
677 | return Status;\r | |
678 | }\r | |
679 | \r | |
a550d468 | 680 | EFI_DRIVER_BINDING_PROTOCOL gEmuBlockIoDriverBinding = {\r |
d59326d3 | 681 | EmuBlockIoDriverBindingSupported,\r |
682 | EmuBlockIoDriverBindingStart,\r | |
683 | EmuBlockIoDriverBindingStop,\r | |
684 | 0xa,\r | |
685 | NULL,\r | |
686 | NULL\r | |
687 | };\r | |
688 | \r | |
d59326d3 | 689 | /**\r |
690 | The user Entry Point for module EmuBlockIo . The user code starts with this function.\r | |
691 | \r | |
d18d8a1d | 692 | @param[in] ImageHandle The firmware allocated handle for the EFI image.\r |
d59326d3 | 693 | @param[in] SystemTable A pointer to the EFI System Table.\r |
d18d8a1d | 694 | \r |
d59326d3 | 695 | @retval EFI_SUCCESS The entry point is executed successfully.\r |
696 | @retval other Some error occurs when executing this entry point.\r | |
697 | \r | |
698 | **/\r | |
699 | EFI_STATUS\r | |
700 | EFIAPI\r | |
701 | InitializeEmuBlockIo (\r | |
a550d468 MK |
702 | IN EFI_HANDLE ImageHandle,\r |
703 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
d59326d3 | 704 | )\r |
705 | {\r | |
a550d468 | 706 | EFI_STATUS Status;\r |
d59326d3 | 707 | \r |
708 | Status = EfiLibInstallAllDriverProtocols2 (\r | |
709 | ImageHandle,\r | |
710 | SystemTable,\r | |
711 | &gEmuBlockIoDriverBinding,\r | |
712 | ImageHandle,\r | |
713 | &gEmuBlockIoComponentName,\r | |
714 | &gEmuBlockIoComponentName2,\r | |
715 | NULL,\r | |
716 | NULL,\r | |
717 | &gEmuBlockIoDriverDiagnostics,\r | |
718 | &gEmuBlockIoDriverDiagnostics2\r | |
719 | );\r | |
720 | ASSERT_EFI_ERROR (Status);\r | |
721 | \r | |
d59326d3 | 722 | return Status;\r |
723 | }\r |