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adbcbf8f | 1 | /** @file\r |
2 | Partition driver that produces logical BlockIo devices from a physical\r | |
3 | BlockIo device. The logical BlockIo devices are based on the format\r | |
4 | of the raw block devices media. Currently "El Torito CD-ROM", Legacy\r | |
5 | MBR, and GPT partition schemes are supported.\r | |
6 | \r | |
493d8e3a | 7 | Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r |
e5eed7d3 | 8 | This program and the accompanying materials\r |
f42be642 | 9 | are licensed and made available under the terms and conditions of the BSD License\r |
10 | which accompanies this distribution. The full text of the license may be found at\r | |
11 | http://opensource.org/licenses/bsd-license.php\r | |
adbcbf8f | 12 | \r |
f42be642 | 13 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
14 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
adbcbf8f | 15 | \r |
16 | **/\r | |
17 | \r | |
18 | \r | |
19 | #include "Partition.h"\r | |
20 | \r | |
21 | //\r | |
ff61847d | 22 | // Partition Driver Global Variables.\r |
adbcbf8f | 23 | //\r |
24 | EFI_DRIVER_BINDING_PROTOCOL gPartitionDriverBinding = {\r | |
25 | PartitionDriverBindingSupported,\r | |
26 | PartitionDriverBindingStart,\r | |
27 | PartitionDriverBindingStop,\r | |
c86b273d RN |
28 | //\r |
29 | // Grub4Dos copies the BPB of the first partition to the MBR. If the \r | |
30 | // DriverBindingStart() of the Fat driver gets run before that of Partition \r | |
31 | // driver only the first partition can be recognized.\r | |
32 | // Let the driver binding version of Partition driver be higher than that of\r | |
33 | // Fat driver to make sure the DriverBindingStart() of the Partition driver\r | |
34 | // gets run before that of Fat driver so that all the partitions can be recognized.\r | |
35 | //\r | |
36 | 0xb,\r | |
adbcbf8f | 37 | NULL,\r |
38 | NULL\r | |
39 | };\r | |
40 | \r | |
ff61847d | 41 | //\r |
48557c65 | 42 | // Prioritized function list to detect partition table. \r |
ff61847d | 43 | //\r |
adbcbf8f | 44 | PARTITION_DETECT_ROUTINE mPartitionDetectRoutineTable[] = {\r |
45 | PartitionInstallGptChildHandles,\r | |
46 | PartitionInstallElToritoChildHandles,\r | |
47 | PartitionInstallMbrChildHandles,\r | |
48 | NULL\r | |
49 | };\r | |
50 | \r | |
adbcbf8f | 51 | /**\r |
52 | Test to see if this driver supports ControllerHandle. Any ControllerHandle\r | |
490b5ea1 | 53 | than contains a BlockIo and DiskIo protocol or a BlockIo2 protocol can be\r |
54 | supported.\r | |
adbcbf8f | 55 | \r |
490b5ea1 | 56 | @param[in] This Protocol instance pointer.\r |
57 | @param[in] ControllerHandle Handle of device to test.\r | |
58 | @param[in] RemainingDevicePath Optional parameter use to pick a specific child\r | |
59 | device to start.\r | |
adbcbf8f | 60 | \r |
61 | @retval EFI_SUCCESS This driver supports this device\r | |
62 | @retval EFI_ALREADY_STARTED This driver is already running on this device\r | |
63 | @retval other This driver does not support this device\r | |
64 | \r | |
65 | **/\r | |
66 | EFI_STATUS\r | |
67 | EFIAPI\r | |
68 | PartitionDriverBindingSupported (\r | |
69 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
70 | IN EFI_HANDLE ControllerHandle,\r | |
71 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
72 | )\r | |
73 | {\r | |
74 | EFI_STATUS Status;\r | |
75 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
76 | EFI_DISK_IO_PROTOCOL *DiskIo;\r | |
77 | EFI_DEV_PATH *Node;\r | |
78 | \r | |
9be29006 | 79 | //\r |
80 | // Check RemainingDevicePath validation\r | |
81 | //\r | |
adbcbf8f | 82 | if (RemainingDevicePath != NULL) {\r |
9be29006 | 83 | //\r |
84 | // Check if RemainingDevicePath is the End of Device Path Node, \r | |
85 | // if yes, go on checking other conditions\r | |
86 | //\r | |
87 | if (!IsDevicePathEnd (RemainingDevicePath)) {\r | |
88 | //\r | |
89 | // If RemainingDevicePath isn't the End of Device Path Node,\r | |
90 | // check its validation\r | |
91 | //\r | |
92 | Node = (EFI_DEV_PATH *) RemainingDevicePath;\r | |
93 | if (Node->DevPath.Type != MEDIA_DEVICE_PATH ||\r | |
adbcbf8f | 94 | Node->DevPath.SubType != MEDIA_HARDDRIVE_DP ||\r |
9be29006 | 95 | DevicePathNodeLength (&Node->DevPath) != sizeof (HARDDRIVE_DEVICE_PATH)) {\r |
490b5ea1 | 96 | return EFI_UNSUPPORTED;\r |
9be29006 | 97 | }\r |
adbcbf8f | 98 | }\r |
99 | }\r | |
9be29006 | 100 | \r |
adbcbf8f | 101 | //\r |
102 | // Open the IO Abstraction(s) needed to perform the supported test\r | |
103 | //\r | |
104 | Status = gBS->OpenProtocol (\r | |
105 | ControllerHandle,\r | |
9be29006 | 106 | &gEfiDiskIoProtocolGuid,\r |
107 | (VOID **) &DiskIo,\r | |
adbcbf8f | 108 | This->DriverBindingHandle,\r |
109 | ControllerHandle,\r | |
110 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
111 | );\r | |
112 | if (Status == EFI_ALREADY_STARTED) {\r | |
113 | return EFI_SUCCESS;\r | |
114 | }\r | |
adbcbf8f | 115 | if (EFI_ERROR (Status)) {\r |
116 | return Status;\r | |
117 | }\r | |
118 | //\r | |
119 | // Close the I/O Abstraction(s) used to perform the supported test\r | |
120 | //\r | |
121 | gBS->CloseProtocol (\r | |
ff61847d | 122 | ControllerHandle,\r |
9be29006 | 123 | &gEfiDiskIoProtocolGuid,\r |
ff61847d | 124 | This->DriverBindingHandle,\r |
125 | ControllerHandle\r | |
126 | );\r | |
adbcbf8f | 127 | \r |
128 | //\r | |
9be29006 | 129 | // Open the EFI Device Path protocol needed to perform the supported test\r |
adbcbf8f | 130 | //\r |
131 | Status = gBS->OpenProtocol (\r | |
132 | ControllerHandle,\r | |
9be29006 | 133 | &gEfiDevicePathProtocolGuid,\r |
134 | (VOID **) &ParentDevicePath,\r | |
adbcbf8f | 135 | This->DriverBindingHandle,\r |
136 | ControllerHandle,\r | |
137 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
138 | );\r | |
139 | if (Status == EFI_ALREADY_STARTED) {\r | |
140 | return EFI_SUCCESS;\r | |
141 | }\r | |
142 | \r | |
143 | if (EFI_ERROR (Status)) {\r | |
144 | return Status;\r | |
145 | }\r | |
9be29006 | 146 | \r |
adbcbf8f | 147 | //\r |
9be29006 | 148 | // Close protocol, don't use device path protocol in the Support() function\r |
adbcbf8f | 149 | //\r |
150 | gBS->CloseProtocol (\r | |
151 | ControllerHandle,\r | |
9be29006 | 152 | &gEfiDevicePathProtocolGuid,\r |
adbcbf8f | 153 | This->DriverBindingHandle,\r |
154 | ControllerHandle\r | |
155 | );\r | |
156 | \r | |
157 | //\r | |
158 | // Open the IO Abstraction(s) needed to perform the supported test\r | |
159 | //\r | |
160 | Status = gBS->OpenProtocol (\r | |
161 | ControllerHandle,\r | |
162 | &gEfiBlockIoProtocolGuid,\r | |
163 | NULL,\r | |
164 | This->DriverBindingHandle,\r | |
165 | ControllerHandle,\r | |
166 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
167 | );\r | |
490b5ea1 | 168 | if (EFI_ERROR (Status)) {\r |
21e1018b | 169 | return Status;\r |
170 | }\r | |
171 | \r | |
490b5ea1 | 172 | return EFI_SUCCESS; \r |
adbcbf8f | 173 | }\r |
174 | \r | |
adbcbf8f | 175 | /**\r |
490b5ea1 | 176 | Start this driver on ControllerHandle by opening a Block IO or a Block IO2\r |
177 | or both, and Disk IO protocol, reading Device Path, and creating a child\r | |
178 | handle with a Disk IO and device path protocol.\r | |
adbcbf8f | 179 | \r |
490b5ea1 | 180 | @param[in] This Protocol instance pointer.\r |
181 | @param[in] ControllerHandle Handle of device to bind driver to\r | |
182 | @param[in] RemainingDevicePath Optional parameter use to pick a specific child\r | |
183 | device to start.\r | |
adbcbf8f | 184 | \r |
185 | @retval EFI_SUCCESS This driver is added to ControllerHandle\r | |
186 | @retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle\r | |
187 | @retval other This driver does not support this device\r | |
188 | \r | |
189 | **/\r | |
190 | EFI_STATUS\r | |
191 | EFIAPI\r | |
192 | PartitionDriverBindingStart (\r | |
193 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
194 | IN EFI_HANDLE ControllerHandle,\r | |
195 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
196 | )\r | |
197 | {\r | |
198 | EFI_STATUS Status;\r | |
199 | EFI_STATUS OpenStatus;\r | |
200 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
490b5ea1 | 201 | EFI_BLOCK_IO2_PROTOCOL *BlockIo2;\r |
adbcbf8f | 202 | EFI_DISK_IO_PROTOCOL *DiskIo;\r |
493d8e3a | 203 | EFI_DISK_IO2_PROTOCOL *DiskIo2;\r |
adbcbf8f | 204 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r |
205 | PARTITION_DETECT_ROUTINE *Routine;\r | |
9afd0514 | 206 | BOOLEAN MediaPresent;\r |
15cc67e6 | 207 | EFI_TPL OldTpl;\r |
adbcbf8f | 208 | \r |
21e1018b | 209 | BlockIo2 = NULL;\r |
15cc67e6 | 210 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK); \r |
9be29006 | 211 | //\r |
212 | // Check RemainingDevicePath validation\r | |
213 | //\r | |
214 | if (RemainingDevicePath != NULL) {\r | |
215 | //\r | |
216 | // Check if RemainingDevicePath is the End of Device Path Node, \r | |
217 | // if yes, return EFI_SUCCESS\r | |
218 | //\r | |
219 | if (IsDevicePathEnd (RemainingDevicePath)) {\r | |
15cc67e6 | 220 | Status = EFI_SUCCESS;\r |
221 | goto Exit;\r | |
9be29006 | 222 | }\r |
223 | }\r | |
224 | \r | |
490b5ea1 | 225 | //\r |
226 | // Try to open BlockIO and BlockIO2. If BlockIO would be opened, continue,\r | |
227 | // otherwise, return error.\r | |
228 | //\r | |
adbcbf8f | 229 | Status = gBS->OpenProtocol (\r |
230 | ControllerHandle,\r | |
231 | &gEfiBlockIoProtocolGuid,\r | |
232 | (VOID **) &BlockIo,\r | |
233 | This->DriverBindingHandle,\r | |
234 | ControllerHandle,\r | |
235 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
236 | );\r | |
237 | if (EFI_ERROR (Status)) {\r | |
15cc67e6 | 238 | goto Exit;\r |
adbcbf8f | 239 | }\r |
490b5ea1 | 240 | \r |
241 | Status = gBS->OpenProtocol (\r | |
242 | ControllerHandle,\r | |
243 | &gEfiBlockIo2ProtocolGuid,\r | |
244 | (VOID **) &BlockIo2,\r | |
245 | This->DriverBindingHandle,\r | |
246 | ControllerHandle,\r | |
493d8e3a | 247 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r |
490b5ea1 | 248 | );\r |
493d8e3a RN |
249 | if (EFI_ERROR (Status)) {\r |
250 | BlockIo2 = NULL;\r | |
251 | }\r | |
490b5ea1 | 252 | \r |
adbcbf8f | 253 | //\r |
490b5ea1 | 254 | // Get the Device Path Protocol on ControllerHandle's handle.\r |
adbcbf8f | 255 | //\r |
256 | Status = gBS->OpenProtocol (\r | |
257 | ControllerHandle,\r | |
258 | &gEfiDevicePathProtocolGuid,\r | |
259 | (VOID **) &ParentDevicePath,\r | |
260 | This->DriverBindingHandle,\r | |
261 | ControllerHandle,\r | |
262 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
263 | );\r | |
264 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
15cc67e6 | 265 | goto Exit;\r |
adbcbf8f | 266 | }\r |
267 | \r | |
493d8e3a RN |
268 | //\r |
269 | // Get the DiskIo and DiskIo2.\r | |
270 | //\r | |
adbcbf8f | 271 | Status = gBS->OpenProtocol (\r |
272 | ControllerHandle,\r | |
273 | &gEfiDiskIoProtocolGuid,\r | |
274 | (VOID **) &DiskIo,\r | |
275 | This->DriverBindingHandle,\r | |
276 | ControllerHandle,\r | |
277 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
278 | );\r | |
279 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
280 | gBS->CloseProtocol (\r | |
281 | ControllerHandle,\r | |
282 | &gEfiDevicePathProtocolGuid,\r | |
283 | This->DriverBindingHandle,\r | |
284 | ControllerHandle\r | |
285 | );\r | |
15cc67e6 | 286 | goto Exit;\r |
adbcbf8f | 287 | }\r |
288 | \r | |
289 | OpenStatus = Status;\r | |
290 | \r | |
493d8e3a RN |
291 | Status = gBS->OpenProtocol (\r |
292 | ControllerHandle,\r | |
293 | &gEfiDiskIo2ProtocolGuid,\r | |
294 | (VOID **) &DiskIo2,\r | |
295 | This->DriverBindingHandle,\r | |
296 | ControllerHandle,\r | |
297 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
298 | );\r | |
299 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
300 | DiskIo2 = NULL;\r | |
301 | }\r | |
302 | \r | |
adbcbf8f | 303 | //\r |
9afd0514 | 304 | // Try to read blocks when there's media or it is removable physical partition.\r |
adbcbf8f | 305 | //\r |
9afd0514 | 306 | Status = EFI_UNSUPPORTED;\r |
307 | MediaPresent = BlockIo->Media->MediaPresent;\r | |
308 | if (BlockIo->Media->MediaPresent ||\r | |
309 | (BlockIo->Media->RemovableMedia && !BlockIo->Media->LogicalPartition)) {\r | |
adbcbf8f | 310 | //\r |
311 | // Try for GPT, then El Torito, and then legacy MBR partition types. If the\r | |
312 | // media supports a given partition type install child handles to represent\r | |
313 | // the partitions described by the media.\r | |
314 | //\r | |
315 | Routine = &mPartitionDetectRoutineTable[0];\r | |
316 | while (*Routine != NULL) {\r | |
317 | Status = (*Routine) (\r | |
318 | This,\r | |
319 | ControllerHandle,\r | |
320 | DiskIo,\r | |
493d8e3a | 321 | DiskIo2,\r |
adbcbf8f | 322 | BlockIo,\r |
490b5ea1 | 323 | BlockIo2,\r |
adbcbf8f | 324 | ParentDevicePath\r |
325 | );\r | |
9afd0514 | 326 | if (!EFI_ERROR (Status) || Status == EFI_MEDIA_CHANGED || Status == EFI_NO_MEDIA) {\r |
adbcbf8f | 327 | break;\r |
328 | }\r | |
329 | Routine++;\r | |
330 | }\r | |
331 | }\r | |
332 | //\r | |
333 | // In the case that the driver is already started (OpenStatus == EFI_ALREADY_STARTED),\r | |
334 | // the DevicePathProtocol and the DiskIoProtocol are not actually opened by the\r | |
335 | // driver. So don't try to close them. Otherwise, we will break the dependency\r | |
336 | // between the controller and the driver set up before.\r | |
337 | //\r | |
9afd0514 | 338 | // In the case that when the media changes on a device it will Reinstall the \r |
339 | // BlockIo interaface. This will cause a call to our Stop(), and a subsequent\r | |
340 | // reentrant call to our Start() successfully. We should leave the device open\r | |
341 | // when this happen. The "media change" case includes either the status is\r | |
342 | // EFI_MEDIA_CHANGED or it is a "media" to "no media" change. \r | |
343 | // \r | |
344 | if (EFI_ERROR (Status) &&\r | |
345 | !EFI_ERROR (OpenStatus) &&\r | |
346 | Status != EFI_MEDIA_CHANGED &&\r | |
347 | !(MediaPresent && Status == EFI_NO_MEDIA)) {\r | |
adbcbf8f | 348 | gBS->CloseProtocol (\r |
349 | ControllerHandle,\r | |
350 | &gEfiDiskIoProtocolGuid,\r | |
351 | This->DriverBindingHandle,\r | |
352 | ControllerHandle\r | |
353 | );\r | |
490b5ea1 | 354 | //\r |
355 | // Close Parent BlockIO2 if has.\r | |
356 | // \r | |
357 | gBS->CloseProtocol (\r | |
358 | ControllerHandle,\r | |
359 | &gEfiBlockIo2ProtocolGuid,\r | |
360 | This->DriverBindingHandle,\r | |
361 | ControllerHandle\r | |
362 | );\r | |
adbcbf8f | 363 | \r |
364 | gBS->CloseProtocol (\r | |
365 | ControllerHandle,\r | |
366 | &gEfiDevicePathProtocolGuid,\r | |
367 | This->DriverBindingHandle,\r | |
368 | ControllerHandle\r | |
369 | );\r | |
370 | }\r | |
371 | \r | |
15cc67e6 | 372 | Exit:\r |
373 | gBS->RestoreTPL (OldTpl);\r | |
adbcbf8f | 374 | return Status;\r |
375 | }\r | |
376 | \r | |
adbcbf8f | 377 | /**\r |
48557c65 | 378 | Stop this driver on ControllerHandle. Support stopping any child handles\r |
adbcbf8f | 379 | created by this driver.\r |
380 | \r | |
381 | @param This Protocol instance pointer.\r | |
382 | @param ControllerHandle Handle of device to stop driver on\r | |
383 | @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of\r | |
384 | children is zero stop the entire bus driver.\r | |
385 | @param ChildHandleBuffer List of Child Handles to Stop.\r | |
386 | \r | |
387 | @retval EFI_SUCCESS This driver is removed ControllerHandle\r | |
388 | @retval other This driver was not removed from this device\r | |
389 | \r | |
390 | **/\r | |
391 | EFI_STATUS\r | |
392 | EFIAPI\r | |
393 | PartitionDriverBindingStop (\r | |
394 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
395 | IN EFI_HANDLE ControllerHandle,\r | |
396 | IN UINTN NumberOfChildren,\r | |
397 | IN EFI_HANDLE *ChildHandleBuffer\r | |
398 | )\r | |
399 | {\r | |
400 | EFI_STATUS Status;\r | |
401 | UINTN Index;\r | |
402 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
490b5ea1 | 403 | EFI_BLOCK_IO2_PROTOCOL *BlockIo2;\r |
adbcbf8f | 404 | BOOLEAN AllChildrenStopped;\r |
405 | PARTITION_PRIVATE_DATA *Private;\r | |
406 | EFI_DISK_IO_PROTOCOL *DiskIo;\r | |
407 | \r | |
490b5ea1 | 408 | BlockIo = NULL;\r |
409 | BlockIo2 = NULL;\r | |
410 | Private = NULL;\r | |
411 | \r | |
adbcbf8f | 412 | if (NumberOfChildren == 0) {\r |
413 | //\r | |
414 | // Close the bus driver\r | |
415 | //\r | |
416 | gBS->CloseProtocol (\r | |
417 | ControllerHandle,\r | |
418 | &gEfiDiskIoProtocolGuid,\r | |
419 | This->DriverBindingHandle,\r | |
420 | ControllerHandle\r | |
421 | );\r | |
490b5ea1 | 422 | //\r |
423 | // Close Parent BlockIO2 if has.\r | |
424 | // \r | |
425 | gBS->CloseProtocol (\r | |
426 | ControllerHandle,\r | |
493d8e3a | 427 | &gEfiDiskIo2ProtocolGuid,\r |
490b5ea1 | 428 | This->DriverBindingHandle,\r |
429 | ControllerHandle\r | |
430 | );\r | |
adbcbf8f | 431 | \r |
432 | gBS->CloseProtocol (\r | |
433 | ControllerHandle,\r | |
434 | &gEfiDevicePathProtocolGuid,\r | |
435 | This->DriverBindingHandle,\r | |
436 | ControllerHandle\r | |
437 | );\r | |
adbcbf8f | 438 | return EFI_SUCCESS;\r |
439 | }\r | |
440 | \r | |
441 | AllChildrenStopped = TRUE;\r | |
442 | for (Index = 0; Index < NumberOfChildren; Index++) {\r | |
490b5ea1 | 443 | gBS->OpenProtocol (\r |
444 | ChildHandleBuffer[Index],\r | |
445 | &gEfiBlockIoProtocolGuid,\r | |
446 | (VOID **) &BlockIo,\r | |
447 | This->DriverBindingHandle,\r | |
448 | ControllerHandle,\r | |
449 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
450 | );\r | |
451 | //\r | |
452 | // Try to locate BlockIo2.\r | |
453 | //\r | |
454 | gBS->OpenProtocol (\r | |
455 | ChildHandleBuffer[Index],\r | |
456 | &gEfiBlockIo2ProtocolGuid,\r | |
457 | (VOID **) &BlockIo2,\r | |
458 | This->DriverBindingHandle,\r | |
459 | ControllerHandle,\r | |
460 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
461 | ); \r | |
462 | \r | |
d0844d13 | 463 | \r |
464 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (BlockIo);\r | |
adbcbf8f | 465 | \r |
490b5ea1 | 466 | Status = gBS->CloseProtocol (\r |
467 | ControllerHandle,\r | |
468 | &gEfiDiskIoProtocolGuid,\r | |
469 | This->DriverBindingHandle,\r | |
470 | ChildHandleBuffer[Index]\r | |
471 | );\r | |
472 | //\r | |
473 | // All Software protocols have be freed from the handle so remove it.\r | |
474 | // Remove the BlockIo Protocol if has.\r | |
475 | // Remove the BlockIo2 Protocol if has.\r | |
476 | //\r | |
477 | if (BlockIo2 != NULL) {\r | |
adbcbf8f | 478 | BlockIo->FlushBlocks (BlockIo);\r |
490b5ea1 | 479 | BlockIo2->FlushBlocksEx (BlockIo2, NULL);\r |
adbcbf8f | 480 | Status = gBS->UninstallMultipleProtocolInterfaces (\r |
490b5ea1 | 481 | ChildHandleBuffer[Index],\r |
482 | &gEfiDevicePathProtocolGuid,\r | |
483 | Private->DevicePath,\r | |
484 | &gEfiBlockIoProtocolGuid,\r | |
485 | &Private->BlockIo,\r | |
486 | &gEfiBlockIo2ProtocolGuid,\r | |
487 | &Private->BlockIo2,\r | |
488 | Private->EspGuid,\r | |
489 | NULL,\r | |
490 | NULL\r | |
491 | );\r | |
492 | } else {\r | |
493 | BlockIo->FlushBlocks (BlockIo);\r | |
494 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
495 | ChildHandleBuffer[Index],\r | |
496 | &gEfiDevicePathProtocolGuid,\r | |
497 | Private->DevicePath,\r | |
498 | &gEfiBlockIoProtocolGuid,\r | |
499 | &Private->BlockIo,\r | |
500 | Private->EspGuid,\r | |
501 | NULL,\r | |
502 | NULL\r | |
503 | );\r | |
504 | }\r | |
adbcbf8f | 505 | \r |
490b5ea1 | 506 | if (EFI_ERROR (Status)) {\r |
507 | gBS->OpenProtocol (\r | |
508 | ControllerHandle,\r | |
509 | &gEfiDiskIoProtocolGuid,\r | |
510 | (VOID **) &DiskIo,\r | |
511 | This->DriverBindingHandle,\r | |
512 | ChildHandleBuffer[Index],\r | |
513 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
514 | );\r | |
515 | } else {\r | |
516 | FreePool (Private->DevicePath);\r | |
517 | FreePool (Private);\r | |
adbcbf8f | 518 | }\r |
519 | \r | |
520 | if (EFI_ERROR (Status)) {\r | |
521 | AllChildrenStopped = FALSE;\r | |
522 | }\r | |
523 | }\r | |
524 | \r | |
525 | if (!AllChildrenStopped) {\r | |
526 | return EFI_DEVICE_ERROR;\r | |
527 | }\r | |
528 | \r | |
529 | return EFI_SUCCESS;\r | |
530 | }\r | |
531 | \r | |
532 | \r | |
533 | /**\r | |
534 | Reset the Block Device.\r | |
535 | \r | |
536 | @param This Protocol instance pointer.\r | |
537 | @param ExtendedVerification Driver may perform diagnostics on reset.\r | |
538 | \r | |
539 | @retval EFI_SUCCESS The device was reset.\r | |
540 | @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r | |
541 | not be reset.\r | |
542 | \r | |
543 | **/\r | |
adbcbf8f | 544 | EFI_STATUS\r |
545 | EFIAPI\r | |
546 | PartitionReset (\r | |
547 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
548 | IN BOOLEAN ExtendedVerification\r | |
549 | )\r | |
550 | {\r | |
551 | PARTITION_PRIVATE_DATA *Private;\r | |
552 | \r | |
553 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);\r | |
554 | \r | |
555 | return Private->ParentBlockIo->Reset (\r | |
556 | Private->ParentBlockIo,\r | |
557 | ExtendedVerification\r | |
558 | );\r | |
559 | }\r | |
560 | \r | |
fcf5e49d RN |
561 | /**\r |
562 | Probe the media status and return EFI_NO_MEDIA or EFI_MEDIA_CHANGED\r | |
563 | for no media or media change case. Otherwise DefaultStatus is returned.\r | |
564 | \r | |
565 | @param DiskIo Pointer to the DiskIo instance.\r | |
566 | @param MediaId Id of the media, changes every time the media is replaced.\r | |
567 | @param DefaultStatus The default status to return when it's not the no media\r | |
568 | or media change case.\r | |
569 | \r | |
570 | @retval EFI_NO_MEDIA There is no media.\r | |
571 | @retval EFI_MEDIA_CHANGED The media was changed.\r | |
572 | @retval others The default status to return.\r | |
573 | **/\r | |
574 | EFI_STATUS\r | |
575 | ProbeMediaStatus (\r | |
576 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
577 | IN UINT32 MediaId,\r | |
578 | IN EFI_STATUS DefaultStatus\r | |
579 | )\r | |
580 | {\r | |
581 | EFI_STATUS Status;\r | |
582 | \r | |
583 | //\r | |
584 | // Read 1 byte from offset 0 but passing NULL as buffer pointer\r | |
585 | //\r | |
586 | Status = DiskIo->ReadDisk (DiskIo, MediaId, 0, 1, NULL);\r | |
587 | if ((Status == EFI_NO_MEDIA) || (Status == EFI_MEDIA_CHANGED)) {\r | |
588 | return Status;\r | |
589 | }\r | |
590 | return DefaultStatus;\r | |
591 | }\r | |
adbcbf8f | 592 | \r |
593 | /**\r | |
594 | Read by using the Disk IO protocol on the parent device. Lba addresses\r | |
595 | must be converted to byte offsets.\r | |
596 | \r | |
597 | @param This Protocol instance pointer.\r | |
598 | @param MediaId Id of the media, changes every time the media is replaced.\r | |
599 | @param Lba The starting Logical Block Address to read from\r | |
600 | @param BufferSize Size of Buffer, must be a multiple of device block size.\r | |
601 | @param Buffer Buffer containing read data\r | |
602 | \r | |
603 | @retval EFI_SUCCESS The data was read correctly from the device.\r | |
604 | @retval EFI_DEVICE_ERROR The device reported an error while performing the read.\r | |
605 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
606 | @retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.\r | |
607 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
608 | @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not\r | |
609 | valid for the device.\r | |
610 | \r | |
611 | **/\r | |
adbcbf8f | 612 | EFI_STATUS\r |
613 | EFIAPI\r | |
614 | PartitionReadBlocks (\r | |
615 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
616 | IN UINT32 MediaId,\r | |
617 | IN EFI_LBA Lba,\r | |
618 | IN UINTN BufferSize,\r | |
619 | OUT VOID *Buffer\r | |
620 | )\r | |
621 | {\r | |
622 | PARTITION_PRIVATE_DATA *Private;\r | |
623 | UINT64 Offset;\r | |
624 | \r | |
625 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);\r | |
626 | \r | |
627 | if (BufferSize % Private->BlockSize != 0) {\r | |
fcf5e49d | 628 | return ProbeMediaStatus (Private->DiskIo, MediaId, EFI_BAD_BUFFER_SIZE);\r |
adbcbf8f | 629 | }\r |
630 | \r | |
631 | Offset = MultU64x32 (Lba, Private->BlockSize) + Private->Start;\r | |
632 | if (Offset + BufferSize > Private->End) {\r | |
fcf5e49d | 633 | return ProbeMediaStatus (Private->DiskIo, MediaId, EFI_INVALID_PARAMETER);\r |
adbcbf8f | 634 | }\r |
635 | //\r | |
636 | // Because some kinds of partition have different block size from their parent\r | |
637 | // device, we call the Disk IO protocol on the parent device, not the Block IO\r | |
638 | // protocol\r | |
639 | //\r | |
640 | return Private->DiskIo->ReadDisk (Private->DiskIo, MediaId, Offset, BufferSize, Buffer);\r | |
641 | }\r | |
642 | \r | |
643 | /**\r | |
644 | Write by using the Disk IO protocol on the parent device. Lba addresses\r | |
645 | must be converted to byte offsets.\r | |
646 | \r | |
490b5ea1 | 647 | @param[in] This Protocol instance pointer.\r |
648 | @param[in] MediaId Id of the media, changes every time the media is replaced.\r | |
649 | @param[in] Lba The starting Logical Block Address to read from\r | |
650 | @param[in] BufferSize Size of Buffer, must be a multiple of device block size.\r | |
651 | @param[in] Buffer Buffer containing data to be written to device.\r | |
adbcbf8f | 652 | \r |
653 | @retval EFI_SUCCESS The data was written correctly to the device.\r | |
654 | @retval EFI_WRITE_PROTECTED The device can not be written to.\r | |
655 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
656 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
657 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
658 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
659 | @retval EFI_INVALID_PARAMETER The write request contains a LBA that is not\r | |
660 | valid for the device.\r | |
661 | \r | |
662 | **/\r | |
adbcbf8f | 663 | EFI_STATUS\r |
664 | EFIAPI\r | |
665 | PartitionWriteBlocks (\r | |
666 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
667 | IN UINT32 MediaId,\r | |
668 | IN EFI_LBA Lba,\r | |
669 | IN UINTN BufferSize,\r | |
490b5ea1 | 670 | IN VOID *Buffer\r |
adbcbf8f | 671 | )\r |
672 | {\r | |
673 | PARTITION_PRIVATE_DATA *Private;\r | |
674 | UINT64 Offset;\r | |
675 | \r | |
676 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);\r | |
677 | \r | |
678 | if (BufferSize % Private->BlockSize != 0) {\r | |
fcf5e49d | 679 | return ProbeMediaStatus (Private->DiskIo, MediaId, EFI_BAD_BUFFER_SIZE);\r |
adbcbf8f | 680 | }\r |
681 | \r | |
682 | Offset = MultU64x32 (Lba, Private->BlockSize) + Private->Start;\r | |
683 | if (Offset + BufferSize > Private->End) {\r | |
fcf5e49d | 684 | return ProbeMediaStatus (Private->DiskIo, MediaId, EFI_INVALID_PARAMETER);\r |
adbcbf8f | 685 | }\r |
686 | //\r | |
687 | // Because some kinds of partition have different block size from their parent\r | |
688 | // device, we call the Disk IO protocol on the parent device, not the Block IO\r | |
689 | // protocol\r | |
690 | //\r | |
691 | return Private->DiskIo->WriteDisk (Private->DiskIo, MediaId, Offset, BufferSize, Buffer);\r | |
692 | }\r | |
693 | \r | |
694 | \r | |
695 | /**\r | |
696 | Flush the parent Block Device.\r | |
697 | \r | |
698 | @param This Protocol instance pointer.\r | |
699 | \r | |
700 | @retval EFI_SUCCESS All outstanding data was written to the device\r | |
701 | @retval EFI_DEVICE_ERROR The device reported an error while writting back the data\r | |
702 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
703 | \r | |
704 | **/\r | |
adbcbf8f | 705 | EFI_STATUS\r |
706 | EFIAPI\r | |
707 | PartitionFlushBlocks (\r | |
708 | IN EFI_BLOCK_IO_PROTOCOL *This\r | |
709 | )\r | |
710 | {\r | |
711 | PARTITION_PRIVATE_DATA *Private;\r | |
712 | \r | |
713 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);\r | |
714 | \r | |
715 | return Private->ParentBlockIo->FlushBlocks (Private->ParentBlockIo);\r | |
716 | }\r | |
717 | \r | |
65fd3952 RN |
718 | /**\r |
719 | Probe the media status and return EFI_NO_MEDIA or EFI_MEDIA_CHANGED\r | |
720 | for no media or media change case. Otherwise DefaultStatus is returned.\r | |
721 | \r | |
493d8e3a | 722 | @param DiskIo2 Pointer to the DiskIo2 instance.\r |
65fd3952 RN |
723 | @param MediaId Id of the media, changes every time the media is replaced.\r |
724 | @param DefaultStatus The default status to return when it's not the no media\r | |
725 | or media change case.\r | |
726 | \r | |
727 | @retval EFI_NO_MEDIA There is no media.\r | |
728 | @retval EFI_MEDIA_CHANGED The media was changed.\r | |
729 | @retval others The default status to return.\r | |
730 | **/\r | |
731 | EFI_STATUS\r | |
732 | ProbeMediaStatusEx (\r | |
493d8e3a | 733 | IN EFI_DISK_IO2_PROTOCOL *DiskIo2,\r |
65fd3952 RN |
734 | IN UINT32 MediaId,\r |
735 | IN EFI_STATUS DefaultStatus\r | |
736 | )\r | |
737 | {\r | |
738 | EFI_STATUS Status;\r | |
739 | \r | |
740 | //\r | |
493d8e3a | 741 | // Read 1 byte from offset 0 but passing NULL as buffer pointer\r |
65fd3952 | 742 | //\r |
493d8e3a | 743 | Status = DiskIo2->ReadDiskEx (DiskIo2, MediaId, 0, NULL, 1, NULL);\r |
65fd3952 RN |
744 | if ((Status == EFI_NO_MEDIA) || (Status == EFI_MEDIA_CHANGED)) {\r |
745 | return Status;\r | |
746 | }\r | |
747 | return DefaultStatus;\r | |
748 | }\r | |
749 | \r | |
490b5ea1 | 750 | /**\r |
751 | Reset the Block Device throught Block I/O2 protocol.\r | |
752 | \r | |
753 | @param This Protocol instance pointer.\r | |
754 | @param ExtendedVerification Driver may perform diagnostics on reset.\r | |
755 | \r | |
756 | @retval EFI_SUCCESS The device was reset.\r | |
757 | @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r | |
758 | not be reset.\r | |
759 | \r | |
760 | **/\r | |
761 | EFI_STATUS\r | |
762 | EFIAPI\r | |
763 | PartitionResetEx (\r | |
764 | IN EFI_BLOCK_IO2_PROTOCOL *This,\r | |
765 | IN BOOLEAN ExtendedVerification\r | |
766 | )\r | |
767 | {\r | |
768 | PARTITION_PRIVATE_DATA *Private;\r | |
769 | \r | |
770 | Private = PARTITION_DEVICE_FROM_BLOCK_IO2_THIS (This);\r | |
771 | \r | |
772 | return Private->ParentBlockIo2->Reset (\r | |
773 | Private->ParentBlockIo2,\r | |
774 | ExtendedVerification\r | |
775 | );\r | |
776 | }\r | |
777 | \r | |
493d8e3a RN |
778 | /**\r |
779 | The general callback for the DiskIo2 interfaces.\r | |
780 | @param Event Event whose notification function is being invoked.\r | |
781 | @param Context The pointer to the notification function's context,\r | |
782 | which points to the PARTITION_ACCESS_TASK instance.\r | |
783 | **/\r | |
784 | VOID\r | |
785 | EFIAPI\r | |
786 | PartitionOnAccessComplete (\r | |
787 | IN EFI_EVENT Event,\r | |
788 | IN VOID *Context\r | |
789 | )\r | |
790 | {\r | |
791 | PARTITION_ACCESS_TASK *Task;\r | |
792 | \r | |
793 | Task = (PARTITION_ACCESS_TASK *) Context;\r | |
794 | \r | |
795 | gBS->CloseEvent (Event);\r | |
796 | \r | |
797 | Task->BlockIo2Token->TransactionStatus = Task->DiskIo2Token.TransactionStatus;\r | |
798 | gBS->SignalEvent (Task->BlockIo2Token->Event);\r | |
799 | \r | |
800 | FreePool (Task);\r | |
801 | }\r | |
802 | \r | |
803 | /**\r | |
804 | Create a new PARTITION_ACCESS_TASK instance.\r | |
805 | \r | |
806 | @param Token Pointer to the EFI_BLOCK_IO2_TOKEN.\r | |
807 | \r | |
808 | @return Pointer to the created PARTITION_ACCESS_TASK instance or NULL upon failure.\r | |
809 | **/\r | |
810 | PARTITION_ACCESS_TASK *\r | |
811 | PartitionCreateAccessTask (\r | |
812 | IN EFI_BLOCK_IO2_TOKEN *Token\r | |
813 | )\r | |
814 | {\r | |
815 | EFI_STATUS Status;\r | |
816 | PARTITION_ACCESS_TASK *Task;\r | |
817 | \r | |
818 | Task = AllocatePool (sizeof (*Task));\r | |
819 | if (Task == NULL) {\r | |
820 | return NULL;\r | |
821 | }\r | |
822 | \r | |
823 | Status = gBS->CreateEvent (\r | |
824 | EVT_NOTIFY_SIGNAL,\r | |
825 | TPL_CALLBACK,\r | |
826 | PartitionOnAccessComplete,\r | |
827 | Task,\r | |
828 | &Task->DiskIo2Token.Event\r | |
829 | );\r | |
830 | if (EFI_ERROR (Status)) {\r | |
831 | FreePool (Task);\r | |
832 | return NULL;\r | |
833 | }\r | |
834 | \r | |
835 | Task->BlockIo2Token = Token;\r | |
836 | \r | |
837 | return Task;\r | |
838 | }\r | |
839 | \r | |
490b5ea1 | 840 | /**\r |
841 | Read BufferSize bytes from Lba into Buffer.\r | |
842 | \r | |
843 | This function reads the requested number of blocks from the device. All the\r | |
844 | blocks are read, or an error is returned.\r | |
845 | If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_or EFI_MEDIA_CHANGED is returned and\r | |
846 | non-blocking I/O is being used, the Event associated with this request will\r | |
847 | not be signaled.\r | |
848 | \r | |
849 | @param[in] This Indicates a pointer to the calling context.\r | |
850 | @param[in] MediaId Id of the media, changes every time the media is \r | |
851 | replaced.\r | |
852 | @param[in] Lba The starting Logical Block Address to read from.\r | |
853 | @param[in, out] Token A pointer to the token associated with the transaction.\r | |
854 | @param[in] BufferSize Size of Buffer, must be a multiple of device block size. \r | |
855 | @param[out] Buffer A pointer to the destination buffer for the data. The \r | |
856 | caller is responsible for either having implicit or \r | |
857 | explicit ownership of the buffer.\r | |
858 | \r | |
859 | @retval EFI_SUCCESS The read request was queued if Token->Event is\r | |
860 | not NULL.The data was read correctly from the\r | |
861 | device if the Token->Event is NULL.\r | |
862 | @retval EFI_DEVICE_ERROR The device reported an error while performing\r | |
863 | the read.\r | |
864 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
865 | @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r | |
866 | @retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of the\r | |
867 | intrinsic block size of the device.\r | |
868 | @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid, \r | |
869 | or the buffer is not on proper alignment.\r | |
870 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r | |
871 | of resources.\r | |
872 | **/\r | |
873 | EFI_STATUS\r | |
874 | EFIAPI\r | |
875 | PartitionReadBlocksEx (\r | |
876 | IN EFI_BLOCK_IO2_PROTOCOL *This,\r | |
877 | IN UINT32 MediaId,\r | |
878 | IN EFI_LBA Lba,\r | |
879 | IN OUT EFI_BLOCK_IO2_TOKEN *Token,\r | |
880 | IN UINTN BufferSize,\r | |
881 | OUT VOID *Buffer\r | |
882 | )\r | |
883 | {\r | |
493d8e3a | 884 | EFI_STATUS Status;\r |
490b5ea1 | 885 | PARTITION_PRIVATE_DATA *Private;\r |
886 | UINT64 Offset;\r | |
493d8e3a | 887 | PARTITION_ACCESS_TASK *Task;\r |
490b5ea1 | 888 | \r |
65fd3952 RN |
889 | Private = PARTITION_DEVICE_FROM_BLOCK_IO2_THIS (This);\r |
890 | \r | |
490b5ea1 | 891 | if (BufferSize % Private->BlockSize != 0) {\r |
493d8e3a | 892 | return ProbeMediaStatusEx (Private->DiskIo2, MediaId, EFI_BAD_BUFFER_SIZE);\r |
490b5ea1 | 893 | }\r |
894 | \r | |
895 | Offset = MultU64x32 (Lba, Private->BlockSize) + Private->Start;\r | |
896 | if (Offset + BufferSize > Private->End) {\r | |
493d8e3a | 897 | return ProbeMediaStatusEx (Private->DiskIo2, MediaId, EFI_INVALID_PARAMETER);\r |
490b5ea1 | 898 | }\r |
899 | \r | |
493d8e3a RN |
900 | if ((Token != NULL) && (Token->Event != NULL)) {\r |
901 | Task = PartitionCreateAccessTask (Token);\r | |
902 | if (Task == NULL) {\r | |
903 | return EFI_OUT_OF_RESOURCES;\r | |
904 | }\r | |
490b5ea1 | 905 | \r |
493d8e3a RN |
906 | Status = Private->DiskIo2->ReadDiskEx (Private->DiskIo2, MediaId, Offset, &Task->DiskIo2Token, BufferSize, Buffer);\r |
907 | if (EFI_ERROR (Status)) {\r | |
908 | gBS->CloseEvent (Task->DiskIo2Token.Event);\r | |
909 | FreePool (Task);\r | |
910 | }\r | |
911 | } else {\r | |
912 | Status = Private->DiskIo2->ReadDiskEx (Private->DiskIo2, MediaId, Offset, NULL, BufferSize, Buffer);\r | |
490b5ea1 | 913 | }\r |
914 | \r | |
493d8e3a | 915 | return Status;\r |
490b5ea1 | 916 | }\r |
917 | \r | |
918 | /**\r | |
919 | Write BufferSize bytes from Lba into Buffer.\r | |
920 | \r | |
921 | This function writes the requested number of blocks to the device. All blocks\r | |
922 | are written, or an error is returned.If EFI_DEVICE_ERROR, EFI_NO_MEDIA,\r | |
923 | EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED is returned and non-blocking I/O is\r | |
924 | being used, the Event associated with this request will not be signaled.\r | |
925 | \r | |
926 | @param[in] This Indicates a pointer to the calling context.\r | |
927 | @param[in] MediaId The media ID that the write request is for.\r | |
928 | @param[in] Lba The starting logical block address to be written. The\r | |
929 | caller is responsible for writing to only legitimate\r | |
930 | locations.\r | |
931 | @param[in, out] Token A pointer to the token associated with the transaction.\r | |
932 | @param[in] BufferSize Size of Buffer, must be a multiple of device block size.\r | |
933 | @param[in] Buffer A pointer to the source buffer for the data.\r | |
934 | \r | |
935 | @retval EFI_SUCCESS The write request was queued if Event is not NULL.\r | |
936 | The data was written correctly to the device if\r | |
937 | the Event is NULL.\r | |
938 | @retval EFI_WRITE_PROTECTED The device can not be written to.\r | |
939 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
940 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
941 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
942 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
943 | @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid, \r | |
944 | or the buffer is not on proper alignment.\r | |
945 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r | |
946 | of resources.\r | |
947 | \r | |
948 | **/\r | |
949 | EFI_STATUS\r | |
950 | EFIAPI\r | |
951 | PartitionWriteBlocksEx (\r | |
952 | IN EFI_BLOCK_IO2_PROTOCOL *This,\r | |
953 | IN UINT32 MediaId,\r | |
954 | IN EFI_LBA Lba,\r | |
955 | IN OUT EFI_BLOCK_IO2_TOKEN *Token,\r | |
956 | IN UINTN BufferSize,\r | |
957 | IN VOID *Buffer\r | |
958 | )\r | |
959 | {\r | |
493d8e3a | 960 | EFI_STATUS Status;\r |
490b5ea1 | 961 | PARTITION_PRIVATE_DATA *Private;\r |
962 | UINT64 Offset;\r | |
493d8e3a | 963 | PARTITION_ACCESS_TASK *Task;\r |
490b5ea1 | 964 | \r |
65fd3952 RN |
965 | Private = PARTITION_DEVICE_FROM_BLOCK_IO2_THIS (This);\r |
966 | \r | |
490b5ea1 | 967 | if (BufferSize % Private->BlockSize != 0) {\r |
493d8e3a | 968 | return ProbeMediaStatusEx (Private->DiskIo2, MediaId, EFI_BAD_BUFFER_SIZE);\r |
490b5ea1 | 969 | }\r |
970 | \r | |
971 | Offset = MultU64x32 (Lba, Private->BlockSize) + Private->Start;\r | |
972 | if (Offset + BufferSize > Private->End) {\r | |
493d8e3a | 973 | return ProbeMediaStatusEx (Private->DiskIo2, MediaId, EFI_INVALID_PARAMETER);\r |
490b5ea1 | 974 | }\r |
493d8e3a RN |
975 | \r |
976 | if ((Token != NULL) && (Token->Event != NULL)) {\r | |
977 | Task = PartitionCreateAccessTask (Token);\r | |
978 | if (Task == NULL) {\r | |
979 | return EFI_OUT_OF_RESOURCES;\r | |
980 | }\r | |
490b5ea1 | 981 | \r |
493d8e3a RN |
982 | Status = Private->DiskIo2->WriteDiskEx (Private->DiskIo2, MediaId, Offset, &Task->DiskIo2Token, BufferSize, Buffer);\r |
983 | if (EFI_ERROR (Status)) {\r | |
984 | gBS->CloseEvent (Task->DiskIo2Token.Event);\r | |
985 | FreePool (Task);\r | |
986 | }\r | |
987 | } else {\r | |
988 | Status = Private->DiskIo2->WriteDiskEx (Private->DiskIo2, MediaId, Offset, NULL, BufferSize, Buffer);\r | |
490b5ea1 | 989 | }\r |
493d8e3a | 990 | return Status;\r |
490b5ea1 | 991 | }\r |
992 | \r | |
993 | /**\r | |
994 | Flush the Block Device.\r | |
995 | \r | |
996 | If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED\r | |
997 | is returned and non-blocking I/O is being used, the Event associated with\r | |
998 | this request will not be signaled. \r | |
999 | \r | |
1000 | @param[in] This Indicates a pointer to the calling context.\r | |
86d8e199 | 1001 | @param[in, out] Token A pointer to the token associated with the transaction\r |
490b5ea1 | 1002 | \r |
1003 | @retval EFI_SUCCESS The flush request was queued if Event is not NULL.\r | |
1004 | All outstanding data was written correctly to the\r | |
1005 | device if the Event is NULL.\r | |
1006 | @retval EFI_DEVICE_ERROR The device reported an error while writting back\r | |
1007 | the data.\r | |
1008 | @retval EFI_WRITE_PROTECTED The device cannot be written to.\r | |
1009 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
1010 | @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r | |
1011 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r | |
1012 | of resources.\r | |
1013 | \r | |
1014 | **/\r | |
1015 | EFI_STATUS\r | |
1016 | EFIAPI\r | |
1017 | PartitionFlushBlocksEx (\r | |
1018 | IN EFI_BLOCK_IO2_PROTOCOL *This,\r | |
1019 | IN OUT EFI_BLOCK_IO2_TOKEN *Token\r | |
1020 | )\r | |
1021 | {\r | |
493d8e3a | 1022 | EFI_STATUS Status;\r |
490b5ea1 | 1023 | PARTITION_PRIVATE_DATA *Private;\r |
493d8e3a | 1024 | PARTITION_ACCESS_TASK *Task;\r |
490b5ea1 | 1025 | \r |
1026 | Private = PARTITION_DEVICE_FROM_BLOCK_IO2_THIS (This);\r | |
1027 | \r | |
493d8e3a RN |
1028 | if ((Token != NULL) && (Token->Event != NULL)) {\r |
1029 | Task = PartitionCreateAccessTask (Token);\r | |
1030 | if (Task == NULL) {\r | |
1031 | return EFI_OUT_OF_RESOURCES;\r | |
1032 | }\r | |
490b5ea1 | 1033 | \r |
493d8e3a RN |
1034 | Status = Private->DiskIo2->FlushDiskEx (Private->DiskIo2, &Task->DiskIo2Token);\r |
1035 | if (EFI_ERROR (Status)) {\r | |
1036 | gBS->CloseEvent (Task->DiskIo2Token.Event);\r | |
1037 | FreePool (Task);\r | |
1038 | }\r | |
1039 | } else {\r | |
1040 | Status = Private->DiskIo2->FlushDiskEx (Private->DiskIo2, NULL);\r | |
1041 | }\r | |
1042 | return Status;\r | |
490b5ea1 | 1043 | }\r |
adbcbf8f | 1044 | \r |
1045 | \r | |
1046 | /**\r | |
1047 | Create a child handle for a logical block device that represents the\r | |
1048 | bytes Start to End of the Parent Block IO device.\r | |
1049 | \r | |
490b5ea1 | 1050 | @param[in] This Protocol instance pointer.\r |
1051 | @param[in] ParentHandle Parent Handle for new child.\r | |
1052 | @param[in] ParentDiskIo Parent DiskIo interface.\r | |
493d8e3a | 1053 | @param[in] ParentDiskIo2 Parent DiskIo2 interface.\r |
490b5ea1 | 1054 | @param[in] ParentBlockIo Parent BlockIo interface.\r |
1055 | @param[in] ParentBlockIo2 Parent BlockIo2 interface.\r | |
1056 | @param[in] ParentDevicePath Parent Device Path.\r | |
1057 | @param[in] DevicePathNode Child Device Path node.\r | |
1058 | @param[in] Start Start Block.\r | |
1059 | @param[in] End End Block.\r | |
1060 | @param[in] BlockSize Child block size.\r | |
1061 | @param[in] InstallEspGuid Flag to install EFI System Partition GUID on handle.\r | |
1062 | \r | |
1063 | @retval EFI_SUCCESS A child handle was added.\r | |
1064 | @retval other A child handle was not added.\r | |
adbcbf8f | 1065 | \r |
1066 | **/\r | |
1067 | EFI_STATUS\r | |
1068 | PartitionInstallChildHandle (\r | |
1069 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
1070 | IN EFI_HANDLE ParentHandle,\r | |
1071 | IN EFI_DISK_IO_PROTOCOL *ParentDiskIo,\r | |
493d8e3a | 1072 | IN EFI_DISK_IO2_PROTOCOL *ParentDiskIo2,\r |
adbcbf8f | 1073 | IN EFI_BLOCK_IO_PROTOCOL *ParentBlockIo,\r |
490b5ea1 | 1074 | IN EFI_BLOCK_IO2_PROTOCOL *ParentBlockIo2,\r |
adbcbf8f | 1075 | IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,\r |
1076 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePathNode,\r | |
1077 | IN EFI_LBA Start,\r | |
1078 | IN EFI_LBA End,\r | |
1079 | IN UINT32 BlockSize,\r | |
1080 | IN BOOLEAN InstallEspGuid\r | |
1081 | )\r | |
1082 | {\r | |
1083 | EFI_STATUS Status;\r | |
1084 | PARTITION_PRIVATE_DATA *Private;\r | |
1085 | \r | |
490b5ea1 | 1086 | Status = EFI_SUCCESS;\r |
adbcbf8f | 1087 | Private = AllocateZeroPool (sizeof (PARTITION_PRIVATE_DATA));\r |
1088 | if (Private == NULL) {\r | |
1089 | return EFI_OUT_OF_RESOURCES;\r | |
1090 | }\r | |
1091 | \r | |
1092 | Private->Signature = PARTITION_PRIVATE_DATA_SIGNATURE;\r | |
1093 | \r | |
1094 | Private->Start = MultU64x32 (Start, ParentBlockIo->Media->BlockSize);\r | |
1095 | Private->End = MultU64x32 (End + 1, ParentBlockIo->Media->BlockSize);\r | |
1096 | \r | |
1097 | Private->BlockSize = BlockSize;\r | |
1098 | Private->ParentBlockIo = ParentBlockIo;\r | |
490b5ea1 | 1099 | Private->ParentBlockIo2 = ParentBlockIo2;\r |
adbcbf8f | 1100 | Private->DiskIo = ParentDiskIo;\r |
493d8e3a | 1101 | Private->DiskIo2 = ParentDiskIo2;\r |
adbcbf8f | 1102 | \r |
d0844d13 | 1103 | //\r |
1104 | // Set the BlockIO into Private Data.\r | |
1105 | //\r | |
1106 | Private->BlockIo.Revision = ParentBlockIo->Revision;\r | |
1107 | \r | |
1108 | Private->BlockIo.Media = &Private->Media;\r | |
1109 | CopyMem (Private->BlockIo.Media, ParentBlockIo->Media, sizeof (EFI_BLOCK_IO_MEDIA));\r | |
490b5ea1 | 1110 | \r |
d0844d13 | 1111 | Private->BlockIo.Reset = PartitionReset;\r |
1112 | Private->BlockIo.ReadBlocks = PartitionReadBlocks;\r | |
1113 | Private->BlockIo.WriteBlocks = PartitionWriteBlocks;\r | |
1114 | Private->BlockIo.FlushBlocks = PartitionFlushBlocks;\r | |
490b5ea1 | 1115 | \r |
d0844d13 | 1116 | //\r |
1117 | // Set the BlockIO2 into Private Data.\r | |
1118 | //\r | |
493d8e3a RN |
1119 | if (Private->DiskIo2 != NULL) {\r |
1120 | ASSERT (Private->ParentBlockIo2 != NULL);\r | |
490b5ea1 | 1121 | Private->BlockIo2.Media = &Private->Media2;\r |
1122 | CopyMem (Private->BlockIo2.Media, ParentBlockIo2->Media, sizeof (EFI_BLOCK_IO_MEDIA));\r | |
1123 | \r | |
1124 | Private->BlockIo2.Reset = PartitionResetEx;\r | |
1125 | Private->BlockIo2.ReadBlocksEx = PartitionReadBlocksEx;\r | |
1126 | Private->BlockIo2.WriteBlocksEx = PartitionWriteBlocksEx;\r | |
1127 | Private->BlockIo2.FlushBlocksEx = PartitionFlushBlocksEx; \r | |
1128 | }\r | |
67f802ed | 1129 | \r |
67f802ed | 1130 | Private->Media.IoAlign = 0;\r |
490b5ea1 | 1131 | Private->Media.LogicalPartition = TRUE;\r |
adbcbf8f | 1132 | Private->Media.LastBlock = DivU64x32 (\r |
1133 | MultU64x32 (\r | |
1134 | End - Start + 1,\r | |
d0844d13 | 1135 | ParentBlockIo->Media->BlockSize\r |
adbcbf8f | 1136 | ),\r |
490b5ea1 | 1137 | BlockSize\r |
adbcbf8f | 1138 | ) - 1;\r |
1139 | \r | |
67f802ed | 1140 | Private->Media.BlockSize = (UINT32) BlockSize;\r |
adbcbf8f | 1141 | \r |
493d8e3a | 1142 | Private->Media2.IoAlign = 0;\r |
490b5ea1 | 1143 | Private->Media2.LogicalPartition = TRUE;\r |
1144 | Private->Media2.LastBlock = Private->Media.LastBlock;\r | |
1145 | Private->Media2.BlockSize = (UINT32) BlockSize;\r | |
1146 | \r | |
fe3b68bb | 1147 | //\r |
0e87144e | 1148 | // Per UEFI Spec, LowestAlignedLba, LogicalBlocksPerPhysicalBlock and OptimalTransferLengthGranularity must be 0\r |
fe3b68bb RN |
1149 | // for logical partitions.\r |
1150 | //\r | |
1151 | if (Private->BlockIo.Revision >= EFI_BLOCK_IO_PROTOCOL_REVISION2) {\r | |
c582ad45 EB |
1152 | Private->Media.LowestAlignedLba = 0;\r |
1153 | Private->Media.LogicalBlocksPerPhysicalBlock = 0;\r | |
1154 | Private->Media2.LowestAlignedLba = 0;\r | |
1155 | Private->Media2.LogicalBlocksPerPhysicalBlock = 0;\r | |
0e87144e | 1156 | if (Private->BlockIo.Revision >= EFI_BLOCK_IO_PROTOCOL_REVISION3) {\r |
c582ad45 EB |
1157 | Private->Media.OptimalTransferLengthGranularity = 0;\r |
1158 | Private->Media2.OptimalTransferLengthGranularity = 0;\r | |
0e87144e | 1159 | }\r |
fe3b68bb RN |
1160 | }\r |
1161 | \r | |
490b5ea1 | 1162 | Private->DevicePath = AppendDevicePathNode (ParentDevicePath, DevicePathNode);\r |
adbcbf8f | 1163 | \r |
1164 | if (Private->DevicePath == NULL) {\r | |
1165 | FreePool (Private);\r | |
1166 | return EFI_OUT_OF_RESOURCES;\r | |
1167 | }\r | |
1168 | \r | |
1169 | if (InstallEspGuid) {\r | |
1170 | Private->EspGuid = &gEfiPartTypeSystemPartGuid;\r | |
1171 | } else {\r | |
1172 | //\r | |
1173 | // If NULL InstallMultipleProtocolInterfaces will ignore it.\r | |
1174 | //\r | |
1175 | Private->EspGuid = NULL;\r | |
1176 | }\r | |
490b5ea1 | 1177 | \r |
adbcbf8f | 1178 | //\r |
490b5ea1 | 1179 | // Create the new handle. \r |
adbcbf8f | 1180 | //\r |
1181 | Private->Handle = NULL;\r | |
493d8e3a | 1182 | if (Private->DiskIo2 != NULL) {\r |
490b5ea1 | 1183 | Status = gBS->InstallMultipleProtocolInterfaces (\r |
1184 | &Private->Handle,\r | |
1185 | &gEfiDevicePathProtocolGuid,\r | |
1186 | Private->DevicePath,\r | |
1187 | &gEfiBlockIoProtocolGuid,\r | |
1188 | &Private->BlockIo,\r | |
1189 | &gEfiBlockIo2ProtocolGuid,\r | |
1190 | &Private->BlockIo2,\r | |
1191 | Private->EspGuid,\r | |
1192 | NULL,\r | |
1193 | NULL\r | |
1194 | );\r | |
d0844d13 | 1195 | } else { \r |
1196 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
1197 | &Private->Handle,\r | |
1198 | &gEfiDevicePathProtocolGuid,\r | |
1199 | Private->DevicePath,\r | |
1200 | &gEfiBlockIoProtocolGuid,\r | |
1201 | &Private->BlockIo,\r | |
1202 | Private->EspGuid,\r | |
1203 | NULL,\r | |
1204 | NULL\r | |
1205 | );\r | |
490b5ea1 | 1206 | }\r |
adbcbf8f | 1207 | \r |
1208 | if (!EFI_ERROR (Status)) {\r | |
1209 | //\r | |
1210 | // Open the Parent Handle for the child\r | |
1211 | //\r | |
1212 | Status = gBS->OpenProtocol (\r | |
1213 | ParentHandle,\r | |
1214 | &gEfiDiskIoProtocolGuid,\r | |
1215 | (VOID **) &ParentDiskIo,\r | |
1216 | This->DriverBindingHandle,\r | |
1217 | Private->Handle,\r | |
1218 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
1219 | );\r | |
1220 | } else {\r | |
1221 | FreePool (Private->DevicePath);\r | |
1222 | FreePool (Private);\r | |
1223 | }\r | |
1224 | \r | |
1225 | return Status;\r | |
1226 | }\r | |
1227 | \r | |
1228 | \r | |
1229 | /**\r | |
1230 | The user Entry Point for module Partition. The user code starts with this function.\r | |
1231 | \r | |
1232 | @param[in] ImageHandle The firmware allocated handle for the EFI image. \r | |
1233 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
1234 | \r | |
1235 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
1236 | @retval other Some error occurs when executing this entry point.\r | |
1237 | \r | |
1238 | **/\r | |
1239 | EFI_STATUS\r | |
1240 | EFIAPI\r | |
1241 | InitializePartition (\r | |
1242 | IN EFI_HANDLE ImageHandle,\r | |
1243 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1244 | )\r | |
1245 | {\r | |
1246 | EFI_STATUS Status;\r | |
1247 | \r | |
1248 | //\r | |
1249 | // Install driver model protocol(s).\r | |
1250 | //\r | |
d38a0f44 | 1251 | Status = EfiLibInstallDriverBindingComponentName2 (\r |
adbcbf8f | 1252 | ImageHandle,\r |
1253 | SystemTable,\r | |
1254 | &gPartitionDriverBinding,\r | |
1255 | ImageHandle,\r | |
1256 | &gPartitionComponentName,\r | |
d38a0f44 | 1257 | &gPartitionComponentName2\r |
adbcbf8f | 1258 | );\r |
1259 | ASSERT_EFI_ERROR (Status);\r | |
1260 | \r | |
1261 | \r | |
1262 | return Status;\r | |
1263 | }\r | |
1264 | \r |