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adbcbf8f | 1 | /** @file\r |
ff61847d | 2 | DiskIo driver that lays on every BlockIo protocol in the system.\r |
adbcbf8f | 3 | DiskIo converts a block oriented device to a byte oriented device.\r |
4 | \r | |
ff61847d | 5 | Disk access may have to handle unaligned request about sector boundaries.\r |
adbcbf8f | 6 | There are three cases:\r |
7 | UnderRun - The first byte is not on a sector boundary or the read request is\r | |
8 | less than a sector in length.\r | |
9 | Aligned - A read of N contiguous sectors.\r | |
10 | OverRun - The last byte is not on a sector boundary.\r | |
11 | \r | |
493d8e3a | 12 | Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r |
e5eed7d3 | 13 | This program and the accompanying materials\r |
f42be642 | 14 | are licensed and made available under the terms and conditions of the BSD License\r |
15 | which accompanies this distribution. The full text of the license may be found at\r | |
16 | http://opensource.org/licenses/bsd-license.php\r | |
17 | \r | |
18 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
19 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
adbcbf8f | 20 | \r |
21 | **/\r | |
22 | \r | |
23 | #include "DiskIo.h"\r | |
24 | \r | |
ff61847d | 25 | //\r |
26 | // Driver binding protocol implementation for DiskIo driver.\r | |
27 | //\r | |
adbcbf8f | 28 | EFI_DRIVER_BINDING_PROTOCOL gDiskIoDriverBinding = {\r |
29 | DiskIoDriverBindingSupported,\r | |
30 | DiskIoDriverBindingStart,\r | |
31 | DiskIoDriverBindingStop,\r | |
32 | 0xa,\r | |
33 | NULL,\r | |
34 | NULL\r | |
35 | };\r | |
36 | \r | |
ff61847d | 37 | //\r |
38 | // Template for DiskIo private data structure.\r | |
39 | // The pointer to BlockIo protocol interface is assigned dynamically.\r | |
40 | //\r | |
adbcbf8f | 41 | DISK_IO_PRIVATE_DATA gDiskIoPrivateDataTemplate = {\r |
42 | DISK_IO_PRIVATE_DATA_SIGNATURE,\r | |
43 | {\r | |
44 | EFI_DISK_IO_PROTOCOL_REVISION,\r | |
45 | DiskIoReadDisk,\r | |
46 | DiskIoWriteDisk\r | |
47 | },\r | |
493d8e3a RN |
48 | {\r |
49 | EFI_DISK_IO2_PROTOCOL_REVISION,\r | |
50 | DiskIo2Cancel,\r | |
51 | DiskIo2ReadDiskEx,\r | |
52 | DiskIo2WriteDiskEx,\r | |
53 | DiskIo2FlushDiskEx\r | |
54 | }\r | |
adbcbf8f | 55 | };\r |
56 | \r | |
adbcbf8f | 57 | /**\r |
58 | Test to see if this driver supports ControllerHandle. \r | |
59 | \r | |
60 | @param This Protocol instance pointer.\r | |
61 | @param ControllerHandle Handle of device to test\r | |
62 | @param RemainingDevicePath Optional parameter use to pick a specific child\r | |
63 | device to start.\r | |
64 | \r | |
65 | @retval EFI_SUCCESS This driver supports this device\r | |
66 | @retval EFI_ALREADY_STARTED This driver is already running on this device\r | |
67 | @retval other This driver does not support this device\r | |
68 | \r | |
69 | **/\r | |
70 | EFI_STATUS\r | |
71 | EFIAPI\r | |
72 | DiskIoDriverBindingSupported (\r | |
73 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
74 | IN EFI_HANDLE ControllerHandle,\r | |
75 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r | |
76 | )\r | |
77 | {\r | |
78 | EFI_STATUS Status;\r | |
79 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
80 | \r | |
81 | //\r | |
82 | // Open the IO Abstraction(s) needed to perform the supported test.\r | |
83 | //\r | |
84 | Status = gBS->OpenProtocol (\r | |
85 | ControllerHandle,\r | |
86 | &gEfiBlockIoProtocolGuid,\r | |
87 | (VOID **) &BlockIo,\r | |
88 | This->DriverBindingHandle,\r | |
89 | ControllerHandle,\r | |
90 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
91 | );\r | |
92 | if (EFI_ERROR (Status)) {\r | |
93 | return Status;\r | |
94 | }\r | |
95 | \r | |
96 | //\r | |
97 | // Close the I/O Abstraction(s) used to perform the supported test.\r | |
98 | //\r | |
99 | gBS->CloseProtocol (\r | |
493d8e3a RN |
100 | ControllerHandle,\r |
101 | &gEfiBlockIoProtocolGuid,\r | |
102 | This->DriverBindingHandle,\r | |
103 | ControllerHandle\r | |
104 | );\r | |
adbcbf8f | 105 | return EFI_SUCCESS;\r |
106 | }\r | |
107 | \r | |
108 | \r | |
109 | /**\r | |
110 | Start this driver on ControllerHandle by opening a Block IO protocol and\r | |
111 | installing a Disk IO protocol on ControllerHandle.\r | |
112 | \r | |
113 | @param This Protocol instance pointer.\r | |
114 | @param ControllerHandle Handle of device to bind driver to\r | |
115 | @param RemainingDevicePath Optional parameter use to pick a specific child\r | |
116 | device to start.\r | |
117 | \r | |
118 | @retval EFI_SUCCESS This driver is added to ControllerHandle\r | |
119 | @retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle\r | |
120 | @retval other This driver does not support this device\r | |
121 | \r | |
122 | **/\r | |
123 | EFI_STATUS\r | |
124 | EFIAPI\r | |
125 | DiskIoDriverBindingStart (\r | |
126 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
127 | IN EFI_HANDLE ControllerHandle,\r | |
128 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r | |
129 | )\r | |
130 | {\r | |
131 | EFI_STATUS Status;\r | |
493d8e3a | 132 | DISK_IO_PRIVATE_DATA *Instance;\r |
15cc67e6 | 133 | EFI_TPL OldTpl;\r |
493d8e3a RN |
134 | EFI_BLOCK_IO_MEDIA *Media;\r |
135 | \r | |
136 | Instance = NULL;\r | |
adbcbf8f | 137 | \r |
15cc67e6 | 138 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
adbcbf8f | 139 | \r |
140 | //\r | |
493d8e3a | 141 | // Connect to the Block IO and Block IO2 interface on ControllerHandle.\r |
adbcbf8f | 142 | //\r |
143 | Status = gBS->OpenProtocol (\r | |
144 | ControllerHandle,\r | |
145 | &gEfiBlockIoProtocolGuid,\r | |
146 | (VOID **) &gDiskIoPrivateDataTemplate.BlockIo,\r | |
147 | This->DriverBindingHandle,\r | |
148 | ControllerHandle,\r | |
149 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
150 | );\r | |
151 | if (EFI_ERROR (Status)) {\r | |
15cc67e6 | 152 | goto ErrorExit1;\r |
adbcbf8f | 153 | }\r |
493d8e3a RN |
154 | \r |
155 | Status = gBS->OpenProtocol (\r | |
156 | ControllerHandle,\r | |
157 | &gEfiBlockIo2ProtocolGuid,\r | |
158 | (VOID **) &gDiskIoPrivateDataTemplate.BlockIo2,\r | |
159 | This->DriverBindingHandle,\r | |
160 | ControllerHandle,\r | |
161 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
162 | );\r | |
163 | if (EFI_ERROR (Status)) {\r | |
164 | gDiskIoPrivateDataTemplate.BlockIo2 = NULL;\r | |
165 | }\r | |
adbcbf8f | 166 | \r |
167 | //\r | |
168 | // Initialize the Disk IO device instance.\r | |
169 | //\r | |
493d8e3a RN |
170 | Instance = AllocateCopyPool (sizeof (DISK_IO_PRIVATE_DATA), &gDiskIoPrivateDataTemplate);\r |
171 | if (Instance == NULL) {\r | |
adbcbf8f | 172 | Status = EFI_OUT_OF_RESOURCES;\r |
173 | goto ErrorExit;\r | |
174 | }\r | |
175 | \r | |
493d8e3a RN |
176 | Media = Instance->BlockIo->Media;\r |
177 | \r | |
178 | //\r | |
179 | // The BlockSize and IoAlign of BlockIo and BlockIo2 should equal.\r | |
180 | //\r | |
181 | ASSERT ((Instance->BlockIo2 == NULL) ||\r | |
182 | ((Instance->BlockIo->Media->IoAlign == Instance->BlockIo2->Media->IoAlign) && \r | |
183 | (Instance->BlockIo->Media->BlockSize == Instance->BlockIo2->Media->BlockSize)\r | |
184 | ));\r | |
185 | \r | |
186 | InitializeListHead (&Instance->TaskQueue);\r | |
187 | EfiInitializeLock (&Instance->TaskQueueLock, TPL_NOTIFY);\r | |
188 | Instance->SharedWorkingBuffer = AllocateAlignedPages (\r | |
189 | EFI_SIZE_TO_PAGES (DATA_BUFFER_BLOCK_NUM * Instance->BlockIo->Media->BlockSize),\r | |
190 | Instance->BlockIo->Media->IoAlign\r | |
191 | );\r | |
192 | if (Instance->SharedWorkingBuffer == NULL) {\r | |
193 | Status = EFI_OUT_OF_RESOURCES;\r | |
194 | goto ErrorExit;\r | |
195 | }\r | |
196 | \r | |
adbcbf8f | 197 | //\r |
198 | // Install protocol interfaces for the Disk IO device.\r | |
199 | //\r | |
493d8e3a RN |
200 | if (Instance->BlockIo2 != NULL) {\r |
201 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
202 | &ControllerHandle,\r | |
203 | &gEfiDiskIoProtocolGuid, &Instance->DiskIo,\r | |
204 | &gEfiDiskIo2ProtocolGuid, &Instance->DiskIo2,\r | |
205 | NULL\r | |
206 | );\r | |
207 | } else {\r | |
208 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
209 | &ControllerHandle,\r | |
210 | &gEfiDiskIoProtocolGuid, &Instance->DiskIo,\r | |
211 | NULL\r | |
212 | );\r | |
213 | }\r | |
adbcbf8f | 214 | \r |
215 | ErrorExit:\r | |
216 | if (EFI_ERROR (Status)) {\r | |
493d8e3a RN |
217 | if (Instance != NULL && Instance->SharedWorkingBuffer != NULL) {\r |
218 | FreeAlignedPages (\r | |
219 | Instance->SharedWorkingBuffer,\r | |
220 | EFI_SIZE_TO_PAGES (DATA_BUFFER_BLOCK_NUM * Instance->BlockIo->Media->BlockSize)\r | |
221 | );\r | |
222 | }\r | |
adbcbf8f | 223 | \r |
493d8e3a RN |
224 | if (Instance != NULL) {\r |
225 | FreePool (Instance);\r | |
adbcbf8f | 226 | }\r |
227 | \r | |
228 | gBS->CloseProtocol (\r | |
493d8e3a RN |
229 | ControllerHandle,\r |
230 | &gEfiBlockIoProtocolGuid,\r | |
231 | This->DriverBindingHandle,\r | |
232 | ControllerHandle\r | |
233 | );\r | |
adbcbf8f | 234 | }\r |
235 | \r | |
15cc67e6 | 236 | ErrorExit1:\r |
237 | gBS->RestoreTPL (OldTpl);\r | |
adbcbf8f | 238 | return Status;\r |
239 | }\r | |
240 | \r | |
adbcbf8f | 241 | /**\r |
242 | Stop this driver on ControllerHandle by removing Disk IO protocol and closing\r | |
243 | the Block IO protocol on ControllerHandle.\r | |
244 | \r | |
245 | @param This Protocol instance pointer.\r | |
246 | @param ControllerHandle Handle of device to stop driver on\r | |
247 | @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of\r | |
248 | children is zero stop the entire bus driver.\r | |
249 | @param ChildHandleBuffer List of Child Handles to Stop.\r | |
250 | \r | |
251 | @retval EFI_SUCCESS This driver is removed ControllerHandle\r | |
252 | @retval other This driver was not removed from this device\r | |
253 | \r | |
254 | **/\r | |
255 | EFI_STATUS\r | |
256 | EFIAPI\r | |
257 | DiskIoDriverBindingStop (\r | |
258 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
259 | IN EFI_HANDLE ControllerHandle,\r | |
260 | IN UINTN NumberOfChildren,\r | |
261 | IN EFI_HANDLE *ChildHandleBuffer\r | |
262 | )\r | |
263 | {\r | |
264 | EFI_STATUS Status;\r | |
265 | EFI_DISK_IO_PROTOCOL *DiskIo;\r | |
493d8e3a RN |
266 | EFI_DISK_IO2_PROTOCOL *DiskIo2;\r |
267 | DISK_IO_PRIVATE_DATA *Instance;\r | |
268 | BOOLEAN AllTaskDone;\r | |
adbcbf8f | 269 | \r |
270 | //\r | |
271 | // Get our context back.\r | |
272 | //\r | |
273 | Status = gBS->OpenProtocol (\r | |
274 | ControllerHandle,\r | |
275 | &gEfiDiskIoProtocolGuid,\r | |
276 | (VOID **) &DiskIo,\r | |
277 | This->DriverBindingHandle,\r | |
278 | ControllerHandle,\r | |
279 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
280 | );\r | |
281 | if (EFI_ERROR (Status)) {\r | |
493d8e3a | 282 | return Status;\r |
adbcbf8f | 283 | }\r |
493d8e3a | 284 | Status = gBS->OpenProtocol (\r |
adbcbf8f | 285 | ControllerHandle,\r |
493d8e3a RN |
286 | &gEfiDiskIo2ProtocolGuid,\r |
287 | (VOID **) &DiskIo2,\r | |
288 | This->DriverBindingHandle,\r | |
289 | ControllerHandle,\r | |
290 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
adbcbf8f | 291 | );\r |
493d8e3a RN |
292 | if (EFI_ERROR (Status)) {\r |
293 | DiskIo2 = NULL;\r | |
294 | }\r | |
295 | \r | |
296 | Instance = DISK_IO_PRIVATE_DATA_FROM_DISK_IO (DiskIo);\r | |
297 | \r | |
298 | if (DiskIo2 != NULL) {\r | |
299 | //\r | |
300 | // Call BlockIo2::Reset() to terminate any in-flight non-blocking I/O requests\r | |
301 | //\r | |
302 | ASSERT (Instance->BlockIo2 != NULL);\r | |
303 | Status = Instance->BlockIo2->Reset (Instance->BlockIo2, FALSE);\r | |
304 | if (EFI_ERROR (Status)) {\r | |
305 | return Status;\r | |
306 | }\r | |
307 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
308 | ControllerHandle,\r | |
309 | &gEfiDiskIoProtocolGuid, &Instance->DiskIo,\r | |
310 | &gEfiDiskIo2ProtocolGuid, &Instance->DiskIo2,\r | |
311 | NULL\r | |
312 | );\r | |
313 | } else {\r | |
314 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
315 | ControllerHandle,\r | |
316 | &gEfiDiskIoProtocolGuid, &Instance->DiskIo,\r | |
317 | NULL\r | |
318 | );\r | |
319 | }\r | |
adbcbf8f | 320 | if (!EFI_ERROR (Status)) {\r |
493d8e3a RN |
321 | \r |
322 | do {\r | |
323 | EfiAcquireLock (&Instance->TaskQueueLock);\r | |
324 | AllTaskDone = IsListEmpty (&Instance->TaskQueue);\r | |
325 | EfiReleaseLock (&Instance->TaskQueueLock);\r | |
326 | } while (!AllTaskDone);\r | |
327 | \r | |
328 | FreeAlignedPages (\r | |
329 | Instance->SharedWorkingBuffer,\r | |
330 | EFI_SIZE_TO_PAGES (DATA_BUFFER_BLOCK_NUM * Instance->BlockIo->Media->BlockSize)\r | |
331 | );\r | |
332 | \r | |
adbcbf8f | 333 | Status = gBS->CloseProtocol (\r |
334 | ControllerHandle,\r | |
335 | &gEfiBlockIoProtocolGuid,\r | |
336 | This->DriverBindingHandle,\r | |
337 | ControllerHandle\r | |
338 | );\r | |
493d8e3a RN |
339 | ASSERT_EFI_ERROR (Status);\r |
340 | if (DiskIo2 != NULL) {\r | |
341 | Status = gBS->CloseProtocol (\r | |
342 | ControllerHandle,\r | |
343 | &gEfiBlockIo2ProtocolGuid,\r | |
344 | This->DriverBindingHandle,\r | |
345 | ControllerHandle\r | |
346 | );\r | |
347 | ASSERT_EFI_ERROR (Status);\r | |
348 | }\r | |
349 | \r | |
350 | FreePool (Instance);\r | |
adbcbf8f | 351 | }\r |
352 | \r | |
493d8e3a RN |
353 | return Status;\r |
354 | }\r | |
355 | \r | |
356 | \r | |
357 | /**\r | |
358 | Destroy the sub task.\r | |
359 | \r | |
360 | @param Subtask Subtask.\r | |
361 | \r | |
362 | @return LIST_ENTRY * Pointer to the next link of subtask.\r | |
363 | **/\r | |
364 | LIST_ENTRY *\r | |
365 | DiskIoDestroySubtask (\r | |
366 | IN DISK_IO_PRIVATE_DATA *Instance,\r | |
367 | IN DISK_IO_SUBTASK *Subtask\r | |
368 | )\r | |
369 | {\r | |
370 | LIST_ENTRY *Link;\r | |
371 | Link = RemoveEntryList (&Subtask->Link);\r | |
372 | if (!Subtask->Blocking) {\r | |
373 | if (Subtask->WorkingBuffer != NULL) {\r | |
374 | FreeAlignedPages (\r | |
375 | Subtask->WorkingBuffer, \r | |
376 | Subtask->Length < Instance->BlockIo->Media->BlockSize\r | |
377 | ? EFI_SIZE_TO_PAGES (Instance->BlockIo->Media->BlockSize)\r | |
378 | : EFI_SIZE_TO_PAGES (Subtask->Length)\r | |
379 | );\r | |
380 | }\r | |
381 | if (Subtask->BlockIo2Token.Event != NULL) {\r | |
382 | gBS->CloseEvent (Subtask->BlockIo2Token.Event);\r | |
383 | }\r | |
adbcbf8f | 384 | }\r |
493d8e3a | 385 | FreePool (Subtask);\r |
adbcbf8f | 386 | \r |
493d8e3a | 387 | return Link;\r |
adbcbf8f | 388 | }\r |
389 | \r | |
493d8e3a RN |
390 | /**\r |
391 | The callback for the BlockIo2 ReadBlocksEx/WriteBlocksEx.\r | |
392 | @param Event Event whose notification function is being invoked.\r | |
393 | @param Context The pointer to the notification function's context,\r | |
394 | which points to the DISK_IO_SUBTASK instance.\r | |
395 | **/\r | |
396 | VOID\r | |
397 | EFIAPI\r | |
398 | DiskIo2OnReadWriteComplete (\r | |
399 | IN EFI_EVENT Event,\r | |
400 | IN VOID *Context\r | |
401 | )\r | |
402 | {\r | |
403 | DISK_IO_SUBTASK *Subtask;\r | |
404 | DISK_IO2_TASK *Task;\r | |
405 | EFI_STATUS TransactionStatus;\r | |
406 | DISK_IO_PRIVATE_DATA *Instance;\r | |
407 | \r | |
408 | gBS->CloseEvent (Event);\r | |
409 | \r | |
410 | Subtask = (DISK_IO_SUBTASK *) Context;\r | |
411 | TransactionStatus = Subtask->BlockIo2Token.TransactionStatus;\r | |
412 | Task = Subtask->Task;\r | |
413 | Instance = Task->Instance;\r | |
414 | \r | |
415 | ASSERT (Subtask->Signature == DISK_IO_SUBTASK_SIGNATURE);\r | |
416 | ASSERT (Instance->Signature == DISK_IO_PRIVATE_DATA_SIGNATURE);\r | |
417 | ASSERT (Task->Signature == DISK_IO2_TASK_SIGNATURE);\r | |
adbcbf8f | 418 | \r |
493d8e3a RN |
419 | if (Subtask->WorkingBuffer != NULL) {\r |
420 | if (!EFI_ERROR (TransactionStatus) && (Task->Token != NULL) && !Subtask->Write) {\r | |
421 | CopyMem (Subtask->Buffer, Subtask->WorkingBuffer + Subtask->Offset, Subtask->Length);\r | |
422 | }\r | |
423 | \r | |
424 | //\r | |
425 | // The WorkingBuffer of blocking subtask either points to SharedWorkingBuffer\r | |
426 | // or will be used by non-blocking subtask which will be freed below.\r | |
427 | //\r | |
428 | if (!Subtask->Blocking) {\r | |
429 | FreeAlignedPages (\r | |
430 | Subtask->WorkingBuffer, \r | |
431 | Subtask->Length < Instance->BlockIo->Media->BlockSize\r | |
432 | ? EFI_SIZE_TO_PAGES (Instance->BlockIo->Media->BlockSize)\r | |
433 | : EFI_SIZE_TO_PAGES (Subtask->Length)\r | |
434 | );\r | |
435 | }\r | |
436 | }\r | |
437 | RemoveEntryList (&Subtask->Link);\r | |
438 | FreePool (Subtask);\r | |
439 | \r | |
440 | if (EFI_ERROR (TransactionStatus) || IsListEmpty (&Task->Subtasks)) {\r | |
441 | if (Task->Token != NULL) {\r | |
442 | //\r | |
443 | // Signal error status once the subtask is failed.\r | |
444 | // Or signal the last status once the last subtask is finished.\r | |
445 | //\r | |
446 | Task->Token->TransactionStatus = TransactionStatus;\r | |
447 | gBS->SignalEvent (Task->Token->Event);\r | |
448 | \r | |
449 | //\r | |
450 | // Mark token to NULL\r | |
451 | //\r | |
452 | Task->Token = NULL;\r | |
453 | }\r | |
454 | }\r | |
455 | \r | |
456 | if (IsListEmpty (&Task->Subtasks)) {\r | |
457 | EfiAcquireLock (&Instance->TaskQueueLock);\r | |
458 | RemoveEntryList (&Task->Link);\r | |
459 | EfiReleaseLock (&Instance->TaskQueueLock);\r | |
460 | \r | |
461 | FreePool (Task);\r | |
462 | }\r | |
463 | }\r | |
adbcbf8f | 464 | \r |
465 | /**\r | |
493d8e3a | 466 | Create the subtask.\r |
adbcbf8f | 467 | \r |
493d8e3a RN |
468 | @param Write TRUE: Write request; FALSE: Read request.\r |
469 | @param Lba The starting logical block address to read from on the device.\r | |
470 | @param Offset The starting byte offset to read from the LBA.\r | |
471 | @param Length The number of bytes to read from the device.\r | |
472 | @param WorkingBuffer The aligned buffer to hold the data for reading or writing.\r | |
473 | @param Buffer The buffer to hold the data for reading or writing.\r | |
474 | @param Blocking TRUE: Blocking request; FALSE: Non-blocking request.\r | |
adbcbf8f | 475 | \r |
493d8e3a RN |
476 | @return A pointer to the created subtask.\r |
477 | **/\r | |
478 | DISK_IO_SUBTASK *\r | |
479 | DiskIoCreateSubtask (\r | |
480 | IN BOOLEAN Write,\r | |
481 | IN UINT64 Lba,\r | |
482 | IN UINT32 Offset,\r | |
483 | IN UINTN Length,\r | |
484 | IN VOID *WorkingBuffer, OPTIONAL\r | |
485 | IN VOID *Buffer,\r | |
486 | IN BOOLEAN Blocking\r | |
487 | )\r | |
488 | {\r | |
489 | DISK_IO_SUBTASK *Subtask;\r | |
490 | EFI_STATUS Status;\r | |
adbcbf8f | 491 | \r |
493d8e3a RN |
492 | Subtask = AllocateZeroPool (sizeof (DISK_IO_SUBTASK));\r |
493 | if (Subtask == NULL) {\r | |
494 | return NULL;\r | |
495 | }\r | |
496 | Subtask->Signature = DISK_IO_SUBTASK_SIGNATURE;\r | |
497 | Subtask->Write = Write;\r | |
498 | Subtask->Lba = Lba;\r | |
499 | Subtask->Offset = Offset;\r | |
500 | Subtask->Length = Length;\r | |
501 | Subtask->WorkingBuffer = WorkingBuffer;\r | |
502 | Subtask->Buffer = Buffer;\r | |
503 | Subtask->Blocking = Blocking;\r | |
504 | if (!Blocking) {\r | |
505 | Status = gBS->CreateEvent (\r | |
506 | EVT_NOTIFY_SIGNAL,\r | |
507 | TPL_NOTIFY,\r | |
508 | DiskIo2OnReadWriteComplete,\r | |
509 | Subtask,\r | |
510 | &Subtask->BlockIo2Token.Event\r | |
511 | );\r | |
512 | if (EFI_ERROR (Status)) {\r | |
513 | FreePool (Subtask);\r | |
514 | return NULL;\r | |
515 | }\r | |
516 | }\r | |
517 | DEBUG ((\r | |
518 | EFI_D_BLKIO, \r | |
519 | " %c:Lba/Offset/Length/WorkingBuffer/Buffer = %016lx/%08x/%08x/%08x/%08x\n",\r | |
520 | Write ? 'W': 'R', Lba, Offset, Length, WorkingBuffer, Buffer\r | |
521 | ));\r | |
522 | \r | |
523 | return Subtask;\r | |
524 | }\r | |
525 | \r | |
526 | /**\r | |
527 | Create the subtask list.\r | |
528 | \r | |
529 | @param Instance Pointer to the DISK_IO_PRIVATE_DATA.\r | |
530 | @param Write TRUE: Write request; FALSE: Read request.\r | |
531 | @param Offset The starting byte offset to read from the device.\r | |
532 | @param BufferSize The size in bytes of Buffer. The number of bytes to read from the device.\r | |
533 | @param Buffer A pointer to the buffer for the data.\r | |
534 | @param Blocking TRUE: Blocking request; FALSE: Non-blocking request.\r | |
535 | @param SharedWorkingBuffer The aligned buffer to hold the data for reading or writing.\r | |
536 | @param Subtasks The subtask list header.\r | |
537 | \r | |
538 | @retval TRUE The subtask list is created successfully.\r | |
539 | @retval FALSE The subtask list is not created.\r | |
adbcbf8f | 540 | **/\r |
493d8e3a RN |
541 | BOOLEAN\r |
542 | DiskIoCreateSubtaskList (\r | |
543 | IN DISK_IO_PRIVATE_DATA *Instance,\r | |
544 | IN BOOLEAN Write,\r | |
adbcbf8f | 545 | IN UINT64 Offset,\r |
546 | IN UINTN BufferSize,\r | |
493d8e3a RN |
547 | IN VOID *Buffer,\r |
548 | IN BOOLEAN Blocking,\r | |
549 | IN VOID *SharedWorkingBuffer,\r | |
550 | IN OUT LIST_ENTRY *Subtasks\r | |
adbcbf8f | 551 | )\r |
552 | {\r | |
adbcbf8f | 553 | UINT32 BlockSize;\r |
493d8e3a | 554 | UINT32 IoAlign;\r |
adbcbf8f | 555 | UINT64 Lba;\r |
556 | UINT64 OverRunLba;\r | |
557 | UINT32 UnderRun;\r | |
558 | UINT32 OverRun;\r | |
493d8e3a | 559 | UINT8 *BufferPtr;\r |
adbcbf8f | 560 | UINTN Length;\r |
adbcbf8f | 561 | UINTN DataBufferSize;\r |
493d8e3a RN |
562 | DISK_IO_SUBTASK *Subtask;\r |
563 | VOID *WorkingBuffer;\r | |
564 | LIST_ENTRY *Link;\r | |
adbcbf8f | 565 | \r |
493d8e3a | 566 | DEBUG ((EFI_D_BLKIO, "DiskIo: Create subtasks for task: Offset/BufferSize/Buffer = %016lx/%08x/%08x\n", Offset, BufferSize, Buffer));\r |
adbcbf8f | 567 | \r |
493d8e3a RN |
568 | BlockSize = Instance->BlockIo->Media->BlockSize;\r |
569 | IoAlign = Instance->BlockIo->Media->IoAlign;\r | |
570 | if (IoAlign == 0) {\r | |
571 | IoAlign = 1;\r | |
adbcbf8f | 572 | }\r |
493d8e3a RN |
573 | \r |
574 | Lba = DivU64x32Remainder (Offset, BlockSize, &UnderRun);\r | |
575 | BufferPtr = (UINT8 *) Buffer;\r | |
adbcbf8f | 576 | \r |
577 | //\r | |
493d8e3a | 578 | // Special handling for zero BufferSize\r |
adbcbf8f | 579 | //\r |
493d8e3a RN |
580 | if (BufferSize == 0) {\r |
581 | Subtask = DiskIoCreateSubtask (Write, Lba, UnderRun, 0, NULL, BufferPtr, Blocking);\r | |
582 | if (Subtask == NULL) {\r | |
583 | goto Done;\r | |
584 | }\r | |
585 | InsertTailList (Subtasks, &Subtask->Link);\r | |
586 | return TRUE;\r | |
adbcbf8f | 587 | }\r |
588 | \r | |
adbcbf8f | 589 | if (UnderRun != 0) {\r |
493d8e3a RN |
590 | Length = MIN (BlockSize - UnderRun, BufferSize);\r |
591 | if (Blocking) {\r | |
592 | WorkingBuffer = SharedWorkingBuffer;\r | |
593 | } else {\r | |
594 | WorkingBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES (BlockSize), IoAlign);\r | |
595 | if (WorkingBuffer == NULL) {\r | |
596 | goto Done;\r | |
597 | }\r | |
598 | }\r | |
599 | if (Write) {\r | |
600 | //\r | |
601 | // A half write operation can be splitted to a blocking block-read and half write operation\r | |
602 | // This can simplify the sub task processing logic\r | |
603 | //\r | |
604 | Subtask = DiskIoCreateSubtask (FALSE, Lba, 0, BlockSize, NULL, WorkingBuffer, TRUE);\r | |
605 | if (Subtask == NULL) {\r | |
606 | goto Done;\r | |
607 | }\r | |
608 | InsertTailList (Subtasks, &Subtask->Link);\r | |
adbcbf8f | 609 | }\r |
610 | \r | |
493d8e3a RN |
611 | Subtask = DiskIoCreateSubtask (Write, Lba, UnderRun, Length, WorkingBuffer, BufferPtr, Blocking);\r |
612 | if (Subtask == NULL) {\r | |
613 | goto Done;\r | |
adbcbf8f | 614 | }\r |
493d8e3a RN |
615 | InsertTailList (Subtasks, &Subtask->Link);\r |
616 | \r | |
617 | BufferPtr += Length;\r | |
618 | Offset += Length;\r | |
619 | BufferSize -= Length;\r | |
620 | Lba ++;\r | |
621 | }\r | |
adbcbf8f | 622 | \r |
493d8e3a RN |
623 | OverRunLba = Lba + DivU64x32Remainder (BufferSize, BlockSize, &OverRun);\r |
624 | BufferSize -= OverRun;\r | |
adbcbf8f | 625 | \r |
493d8e3a RN |
626 | if (OverRun != 0) {\r |
627 | if (Blocking) {\r | |
628 | WorkingBuffer = SharedWorkingBuffer;\r | |
629 | } else {\r | |
630 | WorkingBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES (BlockSize), IoAlign);\r | |
631 | if (WorkingBuffer == NULL) {\r | |
632 | goto Done;\r | |
633 | }\r | |
634 | }\r | |
635 | if (Write) {\r | |
636 | //\r | |
637 | // A half write operation can be splitted to a blocking block-read and half write operation\r | |
638 | // This can simplify the sub task processing logic\r | |
639 | //\r | |
640 | Subtask = DiskIoCreateSubtask (FALSE, OverRunLba, 0, BlockSize, NULL, WorkingBuffer, TRUE);\r | |
641 | if (Subtask == NULL) {\r | |
642 | goto Done;\r | |
643 | }\r | |
644 | InsertTailList (Subtasks, &Subtask->Link);\r | |
645 | }\r | |
adbcbf8f | 646 | \r |
493d8e3a RN |
647 | Subtask = DiskIoCreateSubtask (Write, OverRunLba, 0, OverRun, WorkingBuffer, BufferPtr, Blocking);\r |
648 | if (Subtask == NULL) {\r | |
adbcbf8f | 649 | goto Done;\r |
650 | }\r | |
493d8e3a | 651 | InsertTailList (Subtasks, &Subtask->Link);\r |
adbcbf8f | 652 | }\r |
493d8e3a RN |
653 | \r |
654 | if (OverRunLba > Lba) {\r | |
adbcbf8f | 655 | //\r |
656 | // If the DiskIo maps directly to a BlockIo device do the read.\r | |
657 | //\r | |
493d8e3a RN |
658 | if (ALIGN_POINTER (BufferPtr, IoAlign) == BufferPtr) {\r |
659 | Subtask = DiskIoCreateSubtask (Write, Lba, 0, BufferSize, NULL, BufferPtr, Blocking);\r | |
660 | if (Subtask == NULL) {\r | |
adbcbf8f | 661 | goto Done;\r |
662 | }\r | |
493d8e3a | 663 | InsertTailList (Subtasks, &Subtask->Link);\r |
adbcbf8f | 664 | \r |
493d8e3a RN |
665 | BufferPtr += BufferSize;\r |
666 | Offset += BufferSize;\r | |
667 | BufferSize -= BufferSize;\r | |
adbcbf8f | 668 | \r |
669 | } else {\r | |
493d8e3a RN |
670 | if (Blocking) {\r |
671 | //\r | |
672 | // Use the allocated buffer instead of the original buffer\r | |
673 | // to avoid alignment issue.\r | |
674 | //\r | |
675 | for (; Lba < OverRunLba; Lba += DATA_BUFFER_BLOCK_NUM) {\r | |
676 | DataBufferSize = MIN (BufferSize, DATA_BUFFER_BLOCK_NUM * BlockSize);\r | |
677 | \r | |
678 | Subtask = DiskIoCreateSubtask (Write, Lba, 0, DataBufferSize, SharedWorkingBuffer, BufferPtr, Blocking);\r | |
679 | if (Subtask == NULL) {\r | |
680 | goto Done;\r | |
681 | }\r | |
682 | InsertTailList (Subtasks, &Subtask->Link);\r | |
683 | \r | |
684 | BufferPtr += DataBufferSize;\r | |
685 | Offset += DataBufferSize;\r | |
686 | BufferSize -= DataBufferSize;\r | |
687 | }\r | |
688 | } else {\r | |
689 | WorkingBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES (BufferSize), IoAlign);\r | |
690 | if (WorkingBuffer == NULL) {\r | |
adbcbf8f | 691 | //\r |
493d8e3a | 692 | // If there is not enough memory, downgrade to blocking access\r |
adbcbf8f | 693 | //\r |
493d8e3a RN |
694 | DEBUG ((EFI_D_VERBOSE, "DiskIo: No enough memory so downgrade to blocking access\n"));\r |
695 | if (!DiskIoCreateSubtaskList (Instance, Write, Offset, BufferSize, BufferPtr, TRUE, SharedWorkingBuffer, Subtasks)) {\r | |
696 | goto Done;\r | |
697 | }\r | |
698 | } else {\r | |
699 | Subtask = DiskIoCreateSubtask (Write, Lba, 0, BufferSize, WorkingBuffer, BufferPtr, Blocking);\r | |
700 | if (Subtask == NULL) {\r | |
701 | goto Done;\r | |
702 | }\r | |
703 | InsertTailList (Subtasks, &Subtask->Link);\r | |
adbcbf8f | 704 | }\r |
705 | \r | |
493d8e3a RN |
706 | BufferPtr += BufferSize;\r |
707 | Offset += BufferSize;\r | |
708 | BufferSize -= BufferSize;\r | |
709 | }\r | |
adbcbf8f | 710 | }\r |
711 | }\r | |
712 | \r | |
493d8e3a | 713 | ASSERT (BufferSize == 0);\r |
adbcbf8f | 714 | \r |
493d8e3a | 715 | return TRUE;\r |
adbcbf8f | 716 | \r |
717 | Done:\r | |
493d8e3a RN |
718 | //\r |
719 | // Remove all the subtasks.\r | |
720 | //\r | |
721 | for (Link = GetFirstNode (Subtasks); !IsNull (Subtasks, Link); ) {\r | |
722 | Subtask = CR (Link, DISK_IO_SUBTASK, Link, DISK_IO_SUBTASK_SIGNATURE);\r | |
723 | Link = DiskIoDestroySubtask (Instance, Subtask);\r | |
adbcbf8f | 724 | }\r |
493d8e3a | 725 | return FALSE;\r |
adbcbf8f | 726 | }\r |
727 | \r | |
adbcbf8f | 728 | /**\r |
493d8e3a | 729 | Terminate outstanding asynchronous requests to a device.\r |
adbcbf8f | 730 | \r |
493d8e3a | 731 | @param This Indicates a pointer to the calling context.\r |
adbcbf8f | 732 | \r |
493d8e3a RN |
733 | @retval EFI_SUCCESS All outstanding requests were successfully terminated.\r |
734 | @retval EFI_DEVICE_ERROR The device reported an error while performing the cancel\r | |
735 | operation.\r | |
adbcbf8f | 736 | **/\r |
737 | EFI_STATUS\r | |
738 | EFIAPI\r | |
493d8e3a RN |
739 | DiskIo2Cancel (\r |
740 | IN EFI_DISK_IO2_PROTOCOL *This\r | |
adbcbf8f | 741 | )\r |
742 | {\r | |
493d8e3a RN |
743 | DISK_IO_PRIVATE_DATA *Instance;\r |
744 | DISK_IO2_TASK *Task;\r | |
745 | LIST_ENTRY *Link;\r | |
746 | \r | |
747 | Instance = DISK_IO_PRIVATE_DATA_FROM_DISK_IO2 (This);\r | |
adbcbf8f | 748 | \r |
493d8e3a | 749 | EfiAcquireLock (&Instance->TaskQueueLock);\r |
adbcbf8f | 750 | \r |
493d8e3a RN |
751 | for (Link = GetFirstNode (&Instance->TaskQueue)\r |
752 | ; !IsNull (&Instance->TaskQueue, Link)\r | |
753 | ; Link = GetNextNode (&Instance->TaskQueue, Link)\r | |
754 | ) {\r | |
755 | Task = CR (Link, DISK_IO2_TASK, Link, DISK_IO2_TASK_SIGNATURE);\r | |
adbcbf8f | 756 | \r |
493d8e3a RN |
757 | if (Task->Token != NULL) {\r |
758 | Task->Token->TransactionStatus = EFI_ABORTED;\r | |
759 | gBS->SignalEvent (Task->Token->Event);\r | |
760 | //\r | |
761 | // Set Token to NULL so that the further BlockIo2 responses will be ignored\r | |
762 | //\r | |
763 | Task->Token = NULL;\r | |
764 | }\r | |
adbcbf8f | 765 | }\r |
766 | \r | |
493d8e3a | 767 | EfiReleaseLock (&Instance->TaskQueueLock);\r |
adbcbf8f | 768 | \r |
493d8e3a RN |
769 | return EFI_SUCCESS;\r |
770 | }\r | |
adbcbf8f | 771 | \r |
493d8e3a RN |
772 | /**\r |
773 | Common routine to access the disk.\r | |
774 | \r | |
775 | @param Instance Pointer to the DISK_IO_PRIVATE_DATA.\r | |
776 | @param Write TRUE: Write operation; FALSE: Read operation.\r | |
777 | @param MediaId ID of the medium to access.\r | |
778 | @param Offset The starting byte offset on the logical block I/O device to access.\r | |
779 | @param Token A pointer to the token associated with the transaction.\r | |
780 | If this field is NULL, synchronous/blocking IO is performed.\r | |
781 | @param BufferSize The size in bytes of Buffer. The number of bytes to read from the device.\r | |
782 | @param Buffer A pointer to the destination buffer for the data.\r | |
783 | The caller is responsible either having implicit or explicit ownership of the buffer. \r | |
784 | **/\r | |
785 | EFI_STATUS\r | |
786 | DiskIo2ReadWriteDisk (\r | |
787 | IN DISK_IO_PRIVATE_DATA *Instance,\r | |
788 | IN BOOLEAN Write,\r | |
789 | IN UINT32 MediaId,\r | |
790 | IN UINT64 Offset,\r | |
791 | IN EFI_DISK_IO2_TOKEN *Token,\r | |
792 | IN UINTN BufferSize,\r | |
793 | IN UINT8 *Buffer\r | |
794 | )\r | |
795 | {\r | |
796 | EFI_STATUS Status;\r | |
797 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
798 | EFI_BLOCK_IO2_PROTOCOL *BlockIo2;\r | |
799 | EFI_BLOCK_IO_MEDIA *Media;\r | |
800 | LIST_ENTRY *Link;\r | |
801 | LIST_ENTRY Subtasks;\r | |
802 | DISK_IO_SUBTASK *Subtask;\r | |
803 | DISK_IO2_TASK *Task;\r | |
804 | BOOLEAN TaskQueueEmpty;\r | |
805 | EFI_TPL OldTpl;\r | |
806 | BOOLEAN Blocking;\r | |
807 | LIST_ENTRY *SubtasksPtr;\r | |
808 | \r | |
809 | Task = NULL;\r | |
810 | BlockIo = Instance->BlockIo;\r | |
811 | BlockIo2 = Instance->BlockIo2;\r | |
812 | Media = BlockIo->Media;\r | |
813 | Status = EFI_SUCCESS;\r | |
814 | Blocking = ((Token == NULL) || (Token->Event == NULL));\r | |
adbcbf8f | 815 | \r |
493d8e3a RN |
816 | if (Media->MediaId != MediaId) {\r |
817 | return EFI_MEDIA_CHANGED;\r | |
adbcbf8f | 818 | }\r |
493d8e3a RN |
819 | \r |
820 | if (Write && Media->ReadOnly) {\r | |
821 | return EFI_WRITE_PROTECTED;\r | |
822 | }\r | |
823 | \r | |
824 | if (Blocking) {\r | |
adbcbf8f | 825 | //\r |
493d8e3a | 826 | // Wait till pending async task is completed.\r |
adbcbf8f | 827 | //\r |
493d8e3a RN |
828 | do {\r |
829 | EfiAcquireLock (&Instance->TaskQueueLock);\r | |
830 | TaskQueueEmpty = IsListEmpty (&Instance->TaskQueue);\r | |
831 | EfiReleaseLock (&Instance->TaskQueueLock);\r | |
832 | } while (!TaskQueueEmpty);\r | |
adbcbf8f | 833 | \r |
493d8e3a RN |
834 | SubtasksPtr = &Subtasks;\r |
835 | } else {\r | |
836 | Task = AllocatePool (sizeof (DISK_IO2_TASK));\r | |
837 | if (Task == NULL) {\r | |
838 | return EFI_OUT_OF_RESOURCES;\r | |
adbcbf8f | 839 | }\r |
493d8e3a RN |
840 | \r |
841 | EfiAcquireLock (&Instance->TaskQueueLock);\r | |
842 | InsertTailList (&Instance->TaskQueue, &Task->Link);\r | |
843 | EfiReleaseLock (&Instance->TaskQueueLock);\r | |
adbcbf8f | 844 | \r |
493d8e3a RN |
845 | Task->Signature = DISK_IO2_TASK_SIGNATURE;\r |
846 | Task->Instance = Instance;\r | |
847 | Task->Token = Token;\r | |
adbcbf8f | 848 | \r |
493d8e3a RN |
849 | SubtasksPtr = &Task->Subtasks;\r |
850 | }\r | |
adbcbf8f | 851 | \r |
493d8e3a RN |
852 | InitializeListHead (SubtasksPtr);\r |
853 | if (!DiskIoCreateSubtaskList (Instance, Write, Offset, BufferSize, Buffer, Blocking, Instance->SharedWorkingBuffer, SubtasksPtr)) {\r | |
854 | if (Task != NULL) {\r | |
855 | FreePool (Task);\r | |
adbcbf8f | 856 | }\r |
493d8e3a | 857 | return EFI_OUT_OF_RESOURCES;\r |
adbcbf8f | 858 | }\r |
493d8e3a | 859 | ASSERT (!IsListEmpty (SubtasksPtr));\r |
adbcbf8f | 860 | \r |
493d8e3a RN |
861 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r |
862 | for (Link = GetFirstNode (SubtasksPtr); !IsNull (SubtasksPtr, Link); Link = GetNextNode (SubtasksPtr, Link)) {\r | |
863 | Subtask = CR (Link, DISK_IO_SUBTASK, Link, DISK_IO_SUBTASK_SIGNATURE);\r | |
adbcbf8f | 864 | \r |
493d8e3a RN |
865 | if (!Subtask->Blocking) {\r |
866 | Subtask->Task = Task;\r | |
adbcbf8f | 867 | }\r |
adbcbf8f | 868 | \r |
493d8e3a | 869 | if (Subtask->Write) {\r |
adbcbf8f | 870 | //\r |
493d8e3a | 871 | // Write\r |
adbcbf8f | 872 | //\r |
493d8e3a RN |
873 | if (Subtask->WorkingBuffer != NULL) {\r |
874 | //\r | |
875 | // A sub task before this one should be a block read operation, causing the WorkingBuffer filled with the entire one block data.\r | |
876 | //\r | |
877 | CopyMem (Subtask->WorkingBuffer + Subtask->Offset, Subtask->Buffer, Subtask->Length);\r | |
adbcbf8f | 878 | }\r |
879 | \r | |
493d8e3a RN |
880 | if (Subtask->Blocking) {\r |
881 | Status = BlockIo->WriteBlocks (\r | |
882 | BlockIo,\r | |
883 | MediaId,\r | |
884 | Subtask->Lba,\r | |
885 | Subtask->Length < Media->BlockSize ? Media->BlockSize : Subtask->Length,\r | |
886 | (Subtask->WorkingBuffer != NULL) ? Subtask->WorkingBuffer : Subtask->Buffer\r | |
887 | );\r | |
888 | } else {\r | |
889 | Status = BlockIo2->WriteBlocksEx (\r | |
890 | BlockIo2,\r | |
891 | MediaId,\r | |
892 | Subtask->Lba,\r | |
893 | &Subtask->BlockIo2Token,\r | |
894 | Subtask->Length < Media->BlockSize ? Media->BlockSize : Subtask->Length,\r | |
895 | (Subtask->WorkingBuffer != NULL) ? Subtask->WorkingBuffer : Subtask->Buffer\r | |
896 | );\r | |
897 | }\r | |
adbcbf8f | 898 | \r |
899 | } else {\r | |
900 | //\r | |
493d8e3a | 901 | // Read\r |
adbcbf8f | 902 | //\r |
493d8e3a RN |
903 | if (Subtask->Blocking) {\r |
904 | Status = BlockIo->ReadBlocks (\r | |
adbcbf8f | 905 | BlockIo,\r |
906 | MediaId,\r | |
493d8e3a RN |
907 | Subtask->Lba,\r |
908 | Subtask->Length < Media->BlockSize ? Media->BlockSize : Subtask->Length,\r | |
909 | (Subtask->WorkingBuffer != NULL) ? Subtask->WorkingBuffer : Subtask->Buffer\r | |
adbcbf8f | 910 | );\r |
493d8e3a RN |
911 | if (!EFI_ERROR (Status) && (Subtask->WorkingBuffer != NULL)) {\r |
912 | CopyMem (Subtask->Buffer, Subtask->WorkingBuffer + Subtask->Offset, Subtask->Length);\r | |
adbcbf8f | 913 | }\r |
493d8e3a RN |
914 | } else {\r |
915 | Status = BlockIo2->ReadBlocksEx (\r | |
916 | BlockIo2,\r | |
917 | MediaId,\r | |
918 | Subtask->Lba,\r | |
919 | &Subtask->BlockIo2Token,\r | |
920 | Subtask->Length < Media->BlockSize ? Media->BlockSize : Subtask->Length,\r | |
921 | (Subtask->WorkingBuffer != NULL) ? Subtask->WorkingBuffer : Subtask->Buffer\r | |
922 | );\r | |
923 | }\r | |
924 | }\r | |
925 | \r | |
926 | if (EFI_ERROR (Status)) {\r | |
927 | break;\r | |
adbcbf8f | 928 | }\r |
929 | }\r | |
493d8e3a RN |
930 | \r |
931 | gBS->RaiseTPL (TPL_NOTIFY);\r | |
adbcbf8f | 932 | \r |
493d8e3a RN |
933 | //\r |
934 | // Remove all the remaining subtasks when failure.\r | |
935 | // We shouldn't remove all the tasks because the non-blocking requests have been submitted and cannot be canceled.\r | |
936 | //\r | |
937 | if (EFI_ERROR (Status)) {\r | |
938 | while (!IsNull (SubtasksPtr, Link)) {\r | |
939 | Subtask = CR (Link, DISK_IO_SUBTASK, Link, DISK_IO_SUBTASK_SIGNATURE);\r | |
940 | Link = DiskIoDestroySubtask (Instance, Subtask);\r | |
941 | }\r | |
942 | }\r | |
adbcbf8f | 943 | \r |
493d8e3a RN |
944 | //\r |
945 | // Remove all the blocking subtasks because the non-blocking callback only removes the non-blocking subtask.\r | |
946 | //\r | |
947 | for (Link = GetFirstNode (SubtasksPtr); !IsNull (SubtasksPtr, Link); ) {\r | |
948 | Subtask = CR (Link, DISK_IO_SUBTASK, Link, DISK_IO_SUBTASK_SIGNATURE);\r | |
949 | if (Subtask->Blocking) {\r | |
950 | Link = DiskIoDestroySubtask (Instance, Subtask);\r | |
951 | } else {\r | |
952 | Link = GetNextNode (SubtasksPtr, Link);\r | |
adbcbf8f | 953 | }\r |
493d8e3a | 954 | }\r |
adbcbf8f | 955 | \r |
493d8e3a RN |
956 | //\r |
957 | // It's possible that the callback runs before raising TPL to NOTIFY,\r | |
958 | // so the subtasks list only contains blocking subtask.\r | |
959 | // Remove the Task after the blocking subtasks are removed in above.\r | |
960 | //\r | |
961 | if (!Blocking && IsListEmpty (SubtasksPtr)) {\r | |
962 | EfiAcquireLock (&Instance->TaskQueueLock);\r | |
963 | RemoveEntryList (&Task->Link);\r | |
964 | EfiReleaseLock (&Instance->TaskQueueLock);\r | |
adbcbf8f | 965 | \r |
493d8e3a RN |
966 | if (Task->Token != NULL) {\r |
967 | //\r | |
968 | // Task->Token should be set to NULL by the DiskIo2OnReadWriteComplete\r | |
969 | // It it's not, that means the non-blocking request was downgraded to blocking request.\r | |
970 | //\r | |
971 | DEBUG ((EFI_D_VERBOSE, "DiskIo: Non-blocking request was downgraded to blocking request, signal event directly.\n"));\r | |
972 | Task->Token->TransactionStatus = Status;\r | |
973 | gBS->SignalEvent (Task->Token->Event);\r | |
adbcbf8f | 974 | }\r |
493d8e3a RN |
975 | \r |
976 | FreePool (Task);\r | |
adbcbf8f | 977 | }\r |
978 | \r | |
493d8e3a RN |
979 | gBS->RestoreTPL (OldTpl);\r |
980 | \r | |
981 | return Status;\r | |
982 | }\r | |
983 | \r | |
984 | /**\r | |
985 | Reads a specified number of bytes from a device.\r | |
986 | \r | |
987 | @param This Indicates a pointer to the calling context.\r | |
988 | @param MediaId ID of the medium to be read.\r | |
989 | @param Offset The starting byte offset on the logical block I/O device to read from.\r | |
990 | @param Token A pointer to the token associated with the transaction.\r | |
991 | If this field is NULL, synchronous/blocking IO is performed.\r | |
992 | @param BufferSize The size in bytes of Buffer. The number of bytes to read from the device.\r | |
993 | @param Buffer A pointer to the destination buffer for the data.\r | |
994 | The caller is responsible either having implicit or explicit ownership of the buffer.\r | |
995 | \r | |
996 | @retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was read correctly from the device.\r | |
997 | If Event is not NULL (asynchronous I/O): The request was successfully queued for processing.\r | |
998 | Event will be signaled upon completion.\r | |
999 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
1000 | @retval EFI_NO_MEDIA There is no medium in the device.\r | |
1001 | @retval EFI_MEDIA_CHNAGED The MediaId is not for the current medium.\r | |
1002 | @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not valid for the device.\r | |
1003 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
1004 | \r | |
1005 | **/\r | |
1006 | EFI_STATUS\r | |
1007 | EFIAPI\r | |
1008 | DiskIo2ReadDiskEx (\r | |
1009 | IN EFI_DISK_IO2_PROTOCOL *This,\r | |
1010 | IN UINT32 MediaId,\r | |
1011 | IN UINT64 Offset,\r | |
1012 | IN OUT EFI_DISK_IO2_TOKEN *Token,\r | |
1013 | IN UINTN BufferSize,\r | |
1014 | OUT VOID *Buffer\r | |
1015 | )\r | |
1016 | {\r | |
1017 | return DiskIo2ReadWriteDisk (\r | |
1018 | DISK_IO_PRIVATE_DATA_FROM_DISK_IO2 (This),\r | |
1019 | FALSE, MediaId, Offset, Token, BufferSize, (UINT8 *) Buffer\r | |
1020 | );\r | |
1021 | }\r | |
1022 | \r | |
1023 | /**\r | |
1024 | Writes a specified number of bytes to a device.\r | |
1025 | \r | |
1026 | @param This Indicates a pointer to the calling context.\r | |
1027 | @param MediaId ID of the medium to be written.\r | |
1028 | @param Offset The starting byte offset on the logical block I/O device to write to.\r | |
1029 | @param Token A pointer to the token associated with the transaction.\r | |
1030 | If this field is NULL, synchronous/blocking IO is performed.\r | |
1031 | @param BufferSize The size in bytes of Buffer. The number of bytes to write to the device.\r | |
1032 | @param Buffer A pointer to the buffer containing the data to be written.\r | |
1033 | \r | |
1034 | @retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was written correctly to the device.\r | |
1035 | If Event is not NULL (asynchronous I/O): The request was successfully queued for processing.\r | |
1036 | Event will be signaled upon completion.\r | |
1037 | @retval EFI_WRITE_PROTECTED The device cannot be written to.\r | |
1038 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write operation.\r | |
1039 | @retval EFI_NO_MEDIA There is no medium in the device.\r | |
1040 | @retval EFI_MEDIA_CHNAGED The MediaId is not for the current medium.\r | |
1041 | @retval EFI_INVALID_PARAMETER The write request contains device addresses that are not valid for the device.\r | |
1042 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
1043 | \r | |
1044 | **/\r | |
1045 | EFI_STATUS\r | |
1046 | EFIAPI\r | |
1047 | DiskIo2WriteDiskEx (\r | |
1048 | IN EFI_DISK_IO2_PROTOCOL *This,\r | |
1049 | IN UINT32 MediaId,\r | |
1050 | IN UINT64 Offset,\r | |
1051 | IN OUT EFI_DISK_IO2_TOKEN *Token,\r | |
1052 | IN UINTN BufferSize,\r | |
1053 | IN VOID *Buffer\r | |
1054 | )\r | |
1055 | {\r | |
1056 | return DiskIo2ReadWriteDisk (\r | |
1057 | DISK_IO_PRIVATE_DATA_FROM_DISK_IO2 (This),\r | |
1058 | TRUE, MediaId, Offset, Token, BufferSize, (UINT8 *) Buffer\r | |
1059 | );\r | |
1060 | }\r | |
1061 | \r | |
1062 | /**\r | |
1063 | The callback for the BlockIo2 FlushBlocksEx.\r | |
1064 | @param Event Event whose notification function is being invoked.\r | |
1065 | @param Context The pointer to the notification function's context,\r | |
1066 | which points to the DISK_IO2_FLUSH_TASK instance.\r | |
1067 | **/\r | |
1068 | VOID\r | |
1069 | EFIAPI\r | |
1070 | DiskIo2OnFlushComplete (\r | |
1071 | IN EFI_EVENT Event,\r | |
1072 | IN VOID *Context\r | |
1073 | )\r | |
1074 | {\r | |
1075 | DISK_IO2_FLUSH_TASK *Task;\r | |
1076 | \r | |
1077 | gBS->CloseEvent (Event);\r | |
1078 | \r | |
1079 | Task = (DISK_IO2_FLUSH_TASK *) Context;\r | |
1080 | ASSERT (Task->Signature == DISK_IO2_FLUSH_TASK_SIGNATURE);\r | |
1081 | Task->Token->TransactionStatus = Task->BlockIo2Token.TransactionStatus;\r | |
1082 | gBS->SignalEvent (Task->Token->Event);\r | |
1083 | }\r | |
1084 | \r | |
1085 | /**\r | |
1086 | Flushes all modified data to the physical device.\r | |
1087 | \r | |
1088 | @param This Indicates a pointer to the calling context.\r | |
1089 | @param Token A pointer to the token associated with the transaction.\r | |
1090 | If this field is NULL, synchronous/blocking IO is performed.\r | |
1091 | \r | |
1092 | @retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was flushed successfully to the device.\r | |
1093 | If Event is not NULL (asynchronous I/O): The request was successfully queued for processing.\r | |
1094 | Event will be signaled upon completion.\r | |
1095 | @retval EFI_WRITE_PROTECTED The device cannot be written to.\r | |
1096 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write operation.\r | |
1097 | @retval EFI_NO_MEDIA There is no medium in the device.\r | |
1098 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
1099 | **/\r | |
1100 | EFI_STATUS\r | |
1101 | EFIAPI\r | |
1102 | DiskIo2FlushDiskEx (\r | |
1103 | IN EFI_DISK_IO2_PROTOCOL *This,\r | |
1104 | IN OUT EFI_DISK_IO2_TOKEN *Token\r | |
1105 | )\r | |
1106 | {\r | |
1107 | EFI_STATUS Status;\r | |
1108 | DISK_IO2_FLUSH_TASK *Task;\r | |
1109 | DISK_IO_PRIVATE_DATA *Private;\r | |
1110 | \r | |
1111 | Private = DISK_IO_PRIVATE_DATA_FROM_DISK_IO2 (This);\r | |
1112 | \r | |
1113 | if ((Token != NULL) && (Token->Event != NULL)) {\r | |
1114 | Task = AllocatePool (sizeof (DISK_IO2_FLUSH_TASK));\r | |
1115 | if (Task == NULL) {\r | |
1116 | return EFI_OUT_OF_RESOURCES;\r | |
1117 | }\r | |
1118 | \r | |
1119 | Status = gBS->CreateEvent (\r | |
1120 | EVT_NOTIFY_SIGNAL,\r | |
1121 | TPL_CALLBACK,\r | |
1122 | DiskIo2OnFlushComplete,\r | |
1123 | Task,\r | |
1124 | &Task->BlockIo2Token.Event\r | |
1125 | );\r | |
1126 | if (EFI_ERROR (Status)) {\r | |
1127 | FreePool (Task);\r | |
1128 | return Status;\r | |
1129 | }\r | |
1130 | Task->Signature = DISK_IO2_FLUSH_TASK_SIGNATURE;\r | |
1131 | Status = Private->BlockIo2->FlushBlocksEx (Private->BlockIo2, &Task->BlockIo2Token);\r | |
1132 | if (EFI_ERROR (Status)) {\r | |
1133 | gBS->CloseEvent (Task->BlockIo2Token.Event);\r | |
1134 | FreePool (Task);\r | |
1135 | }\r | |
1136 | } else {\r | |
1137 | Status = Private->BlockIo2->FlushBlocksEx (Private->BlockIo2, NULL);\r | |
adbcbf8f | 1138 | }\r |
1139 | \r | |
1140 | return Status;\r | |
1141 | }\r | |
1142 | \r | |
493d8e3a RN |
1143 | /**\r |
1144 | Read BufferSize bytes from Offset into Buffer.\r | |
1145 | Reads may support reads that are not aligned on\r | |
1146 | sector boundaries. There are three cases:\r | |
1147 | UnderRun - The first byte is not on a sector boundary or the read request is\r | |
1148 | less than a sector in length.\r | |
1149 | Aligned - A read of N contiguous sectors.\r | |
1150 | OverRun - The last byte is not on a sector boundary.\r | |
1151 | \r | |
1152 | @param This Protocol instance pointer.\r | |
1153 | @param MediaId Id of the media, changes every time the media is replaced.\r | |
1154 | @param Offset The starting byte offset to read from\r | |
1155 | @param BufferSize Size of Buffer\r | |
1156 | @param Buffer Buffer containing read data\r | |
1157 | \r | |
1158 | @retval EFI_SUCCESS The data was read correctly from the device.\r | |
1159 | @retval EFI_DEVICE_ERROR The device reported an error while performing the read.\r | |
1160 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
1161 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
1162 | @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not\r | |
1163 | valid for the device.\r | |
1164 | \r | |
1165 | **/\r | |
1166 | EFI_STATUS\r | |
1167 | EFIAPI\r | |
1168 | DiskIoReadDisk (\r | |
1169 | IN EFI_DISK_IO_PROTOCOL *This,\r | |
1170 | IN UINT32 MediaId,\r | |
1171 | IN UINT64 Offset,\r | |
1172 | IN UINTN BufferSize,\r | |
1173 | OUT VOID *Buffer\r | |
1174 | )\r | |
1175 | {\r | |
1176 | return DiskIo2ReadWriteDisk (\r | |
1177 | DISK_IO_PRIVATE_DATA_FROM_DISK_IO (This),\r | |
1178 | FALSE, MediaId, Offset, NULL, BufferSize, (UINT8 *) Buffer\r | |
1179 | );\r | |
1180 | }\r | |
1181 | \r | |
1182 | \r | |
1183 | /**\r | |
1184 | Writes BufferSize bytes from Buffer into Offset.\r | |
1185 | Writes may require a read modify write to support writes that are not\r | |
1186 | aligned on sector boundaries. There are three cases:\r | |
1187 | UnderRun - The first byte is not on a sector boundary or the write request\r | |
1188 | is less than a sector in length. Read modify write is required.\r | |
1189 | Aligned - A write of N contiguous sectors.\r | |
1190 | OverRun - The last byte is not on a sector boundary. Read modified write\r | |
1191 | required.\r | |
1192 | \r | |
1193 | @param This Protocol instance pointer.\r | |
1194 | @param MediaId Id of the media, changes every time the media is replaced.\r | |
1195 | @param Offset The starting byte offset to read from\r | |
1196 | @param BufferSize Size of Buffer\r | |
1197 | @param Buffer Buffer containing read data\r | |
1198 | \r | |
1199 | @retval EFI_SUCCESS The data was written correctly to the device.\r | |
1200 | @retval EFI_WRITE_PROTECTED The device can not be written to.\r | |
1201 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
1202 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
1203 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
1204 | @retval EFI_INVALID_PARAMETER The write request contains device addresses that are not\r | |
1205 | valid for the device.\r | |
1206 | \r | |
1207 | **/\r | |
1208 | EFI_STATUS\r | |
1209 | EFIAPI\r | |
1210 | DiskIoWriteDisk (\r | |
1211 | IN EFI_DISK_IO_PROTOCOL *This,\r | |
1212 | IN UINT32 MediaId,\r | |
1213 | IN UINT64 Offset,\r | |
1214 | IN UINTN BufferSize,\r | |
1215 | IN VOID *Buffer\r | |
1216 | )\r | |
1217 | {\r | |
1218 | return DiskIo2ReadWriteDisk (\r | |
1219 | DISK_IO_PRIVATE_DATA_FROM_DISK_IO (This),\r | |
1220 | TRUE, MediaId, Offset, NULL, BufferSize, (UINT8 *) Buffer\r | |
1221 | );\r | |
1222 | }\r | |
adbcbf8f | 1223 | \r |
1224 | /**\r | |
1225 | The user Entry Point for module DiskIo. The user code starts with this function.\r | |
1226 | \r | |
1227 | @param[in] ImageHandle The firmware allocated handle for the EFI image. \r | |
1228 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
1229 | \r | |
1230 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
1231 | @retval other Some error occurs when executing this entry point.\r | |
1232 | \r | |
1233 | **/\r | |
1234 | EFI_STATUS\r | |
1235 | EFIAPI\r | |
1236 | InitializeDiskIo (\r | |
1237 | IN EFI_HANDLE ImageHandle,\r | |
1238 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1239 | )\r | |
1240 | {\r | |
1241 | EFI_STATUS Status;\r | |
1242 | \r | |
1243 | //\r | |
1244 | // Install driver model protocol(s).\r | |
1245 | //\r | |
d38a0f44 | 1246 | Status = EfiLibInstallDriverBindingComponentName2 (\r |
adbcbf8f | 1247 | ImageHandle,\r |
1248 | SystemTable,\r | |
1249 | &gDiskIoDriverBinding,\r | |
1250 | ImageHandle,\r | |
1251 | &gDiskIoComponentName,\r | |
d38a0f44 | 1252 | &gDiskIoComponentName2\r |
adbcbf8f | 1253 | );\r |
1254 | ASSERT_EFI_ERROR (Status);\r | |
1255 | \r | |
adbcbf8f | 1256 | return Status;\r |
1257 | }\r |