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Commit | Line | Data |
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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 | |
8aafec2c | 4 | of the raw block devices media. Currently "El Torito CD-ROM", UDF, Legacy\r |
adbcbf8f | 5 | MBR, and GPT partition schemes are supported.\r |
6 | \r | |
3a3d62d2 | 7 | Copyright (c) 2006 - 2017, 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 | |
8aafec2c | 48 | PartitionInstallUdfChildHandles,\r |
adbcbf8f | 49 | NULL\r |
50 | };\r | |
51 | \r | |
adbcbf8f | 52 | /**\r |
53 | Test to see if this driver supports ControllerHandle. Any ControllerHandle\r | |
490b5ea1 | 54 | than contains a BlockIo and DiskIo protocol or a BlockIo2 protocol can be\r |
55 | supported.\r | |
adbcbf8f | 56 | \r |
490b5ea1 | 57 | @param[in] This Protocol instance pointer.\r |
58 | @param[in] ControllerHandle Handle of device to test.\r | |
59 | @param[in] RemainingDevicePath Optional parameter use to pick a specific child\r | |
60 | device to start.\r | |
adbcbf8f | 61 | \r |
62 | @retval EFI_SUCCESS This driver supports this device\r | |
63 | @retval EFI_ALREADY_STARTED This driver is already running on this device\r | |
64 | @retval other This driver does not support this device\r | |
65 | \r | |
66 | **/\r | |
67 | EFI_STATUS\r | |
68 | EFIAPI\r | |
69 | PartitionDriverBindingSupported (\r | |
70 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
71 | IN EFI_HANDLE ControllerHandle,\r | |
72 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
73 | )\r | |
74 | {\r | |
75 | EFI_STATUS Status;\r | |
76 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
77 | EFI_DISK_IO_PROTOCOL *DiskIo;\r | |
78 | EFI_DEV_PATH *Node;\r | |
79 | \r | |
9be29006 | 80 | //\r |
81 | // Check RemainingDevicePath validation\r | |
82 | //\r | |
adbcbf8f | 83 | if (RemainingDevicePath != NULL) {\r |
9be29006 | 84 | //\r |
85 | // Check if RemainingDevicePath is the End of Device Path Node, \r | |
86 | // if yes, go on checking other conditions\r | |
87 | //\r | |
88 | if (!IsDevicePathEnd (RemainingDevicePath)) {\r | |
89 | //\r | |
90 | // If RemainingDevicePath isn't the End of Device Path Node,\r | |
91 | // check its validation\r | |
92 | //\r | |
93 | Node = (EFI_DEV_PATH *) RemainingDevicePath;\r | |
94 | if (Node->DevPath.Type != MEDIA_DEVICE_PATH ||\r | |
adbcbf8f | 95 | Node->DevPath.SubType != MEDIA_HARDDRIVE_DP ||\r |
9be29006 | 96 | DevicePathNodeLength (&Node->DevPath) != sizeof (HARDDRIVE_DEVICE_PATH)) {\r |
490b5ea1 | 97 | return EFI_UNSUPPORTED;\r |
9be29006 | 98 | }\r |
adbcbf8f | 99 | }\r |
100 | }\r | |
9be29006 | 101 | \r |
adbcbf8f | 102 | //\r |
103 | // Open the IO Abstraction(s) needed to perform the supported test\r | |
104 | //\r | |
105 | Status = gBS->OpenProtocol (\r | |
106 | ControllerHandle,\r | |
9be29006 | 107 | &gEfiDiskIoProtocolGuid,\r |
108 | (VOID **) &DiskIo,\r | |
adbcbf8f | 109 | This->DriverBindingHandle,\r |
110 | ControllerHandle,\r | |
111 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
112 | );\r | |
113 | if (Status == EFI_ALREADY_STARTED) {\r | |
114 | return EFI_SUCCESS;\r | |
115 | }\r | |
adbcbf8f | 116 | if (EFI_ERROR (Status)) {\r |
117 | return Status;\r | |
118 | }\r | |
119 | //\r | |
120 | // Close the I/O Abstraction(s) used to perform the supported test\r | |
121 | //\r | |
122 | gBS->CloseProtocol (\r | |
ff61847d | 123 | ControllerHandle,\r |
9be29006 | 124 | &gEfiDiskIoProtocolGuid,\r |
ff61847d | 125 | This->DriverBindingHandle,\r |
126 | ControllerHandle\r | |
127 | );\r | |
adbcbf8f | 128 | \r |
129 | //\r | |
9be29006 | 130 | // Open the EFI Device Path protocol needed to perform the supported test\r |
adbcbf8f | 131 | //\r |
132 | Status = gBS->OpenProtocol (\r | |
133 | ControllerHandle,\r | |
9be29006 | 134 | &gEfiDevicePathProtocolGuid,\r |
135 | (VOID **) &ParentDevicePath,\r | |
adbcbf8f | 136 | This->DriverBindingHandle,\r |
137 | ControllerHandle,\r | |
138 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
139 | );\r | |
140 | if (Status == EFI_ALREADY_STARTED) {\r | |
141 | return EFI_SUCCESS;\r | |
142 | }\r | |
143 | \r | |
144 | if (EFI_ERROR (Status)) {\r | |
145 | return Status;\r | |
146 | }\r | |
9be29006 | 147 | \r |
adbcbf8f | 148 | //\r |
9be29006 | 149 | // Close protocol, don't use device path protocol in the Support() function\r |
adbcbf8f | 150 | //\r |
151 | gBS->CloseProtocol (\r | |
152 | ControllerHandle,\r | |
9be29006 | 153 | &gEfiDevicePathProtocolGuid,\r |
adbcbf8f | 154 | This->DriverBindingHandle,\r |
155 | ControllerHandle\r | |
156 | );\r | |
157 | \r | |
158 | //\r | |
159 | // Open the IO Abstraction(s) needed to perform the supported test\r | |
160 | //\r | |
161 | Status = gBS->OpenProtocol (\r | |
162 | ControllerHandle,\r | |
163 | &gEfiBlockIoProtocolGuid,\r | |
164 | NULL,\r | |
165 | This->DriverBindingHandle,\r | |
166 | ControllerHandle,\r | |
167 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
168 | );\r | |
21e1018b | 169 | \r |
69c0fbd2 | 170 | return Status;\r |
adbcbf8f | 171 | }\r |
172 | \r | |
adbcbf8f | 173 | /**\r |
490b5ea1 | 174 | Start this driver on ControllerHandle by opening a Block IO or a Block IO2\r |
175 | or both, and Disk IO protocol, reading Device Path, and creating a child\r | |
176 | handle with a Disk IO and device path protocol.\r | |
adbcbf8f | 177 | \r |
490b5ea1 | 178 | @param[in] This Protocol instance pointer.\r |
179 | @param[in] ControllerHandle Handle of device to bind driver to\r | |
180 | @param[in] RemainingDevicePath Optional parameter use to pick a specific child\r | |
181 | device to start.\r | |
adbcbf8f | 182 | \r |
183 | @retval EFI_SUCCESS This driver is added to ControllerHandle\r | |
184 | @retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle\r | |
185 | @retval other This driver does not support this device\r | |
186 | \r | |
187 | **/\r | |
188 | EFI_STATUS\r | |
189 | EFIAPI\r | |
190 | PartitionDriverBindingStart (\r | |
191 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
192 | IN EFI_HANDLE ControllerHandle,\r | |
193 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
194 | )\r | |
195 | {\r | |
196 | EFI_STATUS Status;\r | |
197 | EFI_STATUS OpenStatus;\r | |
198 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
490b5ea1 | 199 | EFI_BLOCK_IO2_PROTOCOL *BlockIo2;\r |
adbcbf8f | 200 | EFI_DISK_IO_PROTOCOL *DiskIo;\r |
493d8e3a | 201 | EFI_DISK_IO2_PROTOCOL *DiskIo2;\r |
adbcbf8f | 202 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r |
203 | PARTITION_DETECT_ROUTINE *Routine;\r | |
9afd0514 | 204 | BOOLEAN MediaPresent;\r |
15cc67e6 | 205 | EFI_TPL OldTpl;\r |
adbcbf8f | 206 | \r |
21e1018b | 207 | BlockIo2 = NULL;\r |
15cc67e6 | 208 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK); \r |
9be29006 | 209 | //\r |
210 | // Check RemainingDevicePath validation\r | |
211 | //\r | |
212 | if (RemainingDevicePath != NULL) {\r | |
213 | //\r | |
214 | // Check if RemainingDevicePath is the End of Device Path Node, \r | |
215 | // if yes, return EFI_SUCCESS\r | |
216 | //\r | |
217 | if (IsDevicePathEnd (RemainingDevicePath)) {\r | |
15cc67e6 | 218 | Status = EFI_SUCCESS;\r |
219 | goto Exit;\r | |
9be29006 | 220 | }\r |
221 | }\r | |
222 | \r | |
490b5ea1 | 223 | //\r |
224 | // Try to open BlockIO and BlockIO2. If BlockIO would be opened, continue,\r | |
225 | // otherwise, return error.\r | |
226 | //\r | |
adbcbf8f | 227 | Status = gBS->OpenProtocol (\r |
228 | ControllerHandle,\r | |
229 | &gEfiBlockIoProtocolGuid,\r | |
230 | (VOID **) &BlockIo,\r | |
231 | This->DriverBindingHandle,\r | |
232 | ControllerHandle,\r | |
233 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
234 | );\r | |
235 | if (EFI_ERROR (Status)) {\r | |
15cc67e6 | 236 | goto Exit;\r |
adbcbf8f | 237 | }\r |
490b5ea1 | 238 | \r |
239 | Status = gBS->OpenProtocol (\r | |
240 | ControllerHandle,\r | |
241 | &gEfiBlockIo2ProtocolGuid,\r | |
242 | (VOID **) &BlockIo2,\r | |
243 | This->DriverBindingHandle,\r | |
244 | ControllerHandle,\r | |
493d8e3a | 245 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r |
490b5ea1 | 246 | );\r |
493d8e3a RN |
247 | if (EFI_ERROR (Status)) {\r |
248 | BlockIo2 = NULL;\r | |
249 | }\r | |
490b5ea1 | 250 | \r |
adbcbf8f | 251 | //\r |
490b5ea1 | 252 | // Get the Device Path Protocol on ControllerHandle's handle.\r |
adbcbf8f | 253 | //\r |
254 | Status = gBS->OpenProtocol (\r | |
255 | ControllerHandle,\r | |
256 | &gEfiDevicePathProtocolGuid,\r | |
257 | (VOID **) &ParentDevicePath,\r | |
258 | This->DriverBindingHandle,\r | |
259 | ControllerHandle,\r | |
260 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
261 | );\r | |
262 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
15cc67e6 | 263 | goto Exit;\r |
adbcbf8f | 264 | }\r |
265 | \r | |
493d8e3a RN |
266 | //\r |
267 | // Get the DiskIo and DiskIo2.\r | |
268 | //\r | |
adbcbf8f | 269 | Status = gBS->OpenProtocol (\r |
270 | ControllerHandle,\r | |
271 | &gEfiDiskIoProtocolGuid,\r | |
272 | (VOID **) &DiskIo,\r | |
273 | This->DriverBindingHandle,\r | |
274 | ControllerHandle,\r | |
275 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
276 | );\r | |
277 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
278 | gBS->CloseProtocol (\r | |
279 | ControllerHandle,\r | |
280 | &gEfiDevicePathProtocolGuid,\r | |
281 | This->DriverBindingHandle,\r | |
282 | ControllerHandle\r | |
283 | );\r | |
15cc67e6 | 284 | goto Exit;\r |
adbcbf8f | 285 | }\r |
286 | \r | |
287 | OpenStatus = Status;\r | |
288 | \r | |
493d8e3a RN |
289 | Status = gBS->OpenProtocol (\r |
290 | ControllerHandle,\r | |
291 | &gEfiDiskIo2ProtocolGuid,\r | |
292 | (VOID **) &DiskIo2,\r | |
293 | This->DriverBindingHandle,\r | |
294 | ControllerHandle,\r | |
295 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
296 | );\r | |
297 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
298 | DiskIo2 = NULL;\r | |
299 | }\r | |
300 | \r | |
adbcbf8f | 301 | //\r |
9afd0514 | 302 | // Try to read blocks when there's media or it is removable physical partition.\r |
adbcbf8f | 303 | //\r |
9afd0514 | 304 | Status = EFI_UNSUPPORTED;\r |
305 | MediaPresent = BlockIo->Media->MediaPresent;\r | |
306 | if (BlockIo->Media->MediaPresent ||\r | |
307 | (BlockIo->Media->RemovableMedia && !BlockIo->Media->LogicalPartition)) {\r | |
adbcbf8f | 308 | //\r |
8aafec2c PA |
309 | // Try for GPT, then El Torito, then UDF, and then legacy MBR partition\r |
310 | // types. If the media supports a given partition type install child handles\r | |
311 | // to represent the partitions described by the media.\r | |
adbcbf8f | 312 | //\r |
313 | Routine = &mPartitionDetectRoutineTable[0];\r | |
314 | while (*Routine != NULL) {\r | |
315 | Status = (*Routine) (\r | |
316 | This,\r | |
317 | ControllerHandle,\r | |
318 | DiskIo,\r | |
493d8e3a | 319 | DiskIo2,\r |
adbcbf8f | 320 | BlockIo,\r |
490b5ea1 | 321 | BlockIo2,\r |
adbcbf8f | 322 | ParentDevicePath\r |
323 | );\r | |
9afd0514 | 324 | if (!EFI_ERROR (Status) || Status == EFI_MEDIA_CHANGED || Status == EFI_NO_MEDIA) {\r |
adbcbf8f | 325 | break;\r |
326 | }\r | |
327 | Routine++;\r | |
328 | }\r | |
329 | }\r | |
330 | //\r | |
331 | // In the case that the driver is already started (OpenStatus == EFI_ALREADY_STARTED),\r | |
332 | // the DevicePathProtocol and the DiskIoProtocol are not actually opened by the\r | |
333 | // driver. So don't try to close them. Otherwise, we will break the dependency\r | |
334 | // between the controller and the driver set up before.\r | |
335 | //\r | |
9afd0514 | 336 | // In the case that when the media changes on a device it will Reinstall the \r |
337 | // BlockIo interaface. This will cause a call to our Stop(), and a subsequent\r | |
338 | // reentrant call to our Start() successfully. We should leave the device open\r | |
339 | // when this happen. The "media change" case includes either the status is\r | |
340 | // EFI_MEDIA_CHANGED or it is a "media" to "no media" change. \r | |
341 | // \r | |
342 | if (EFI_ERROR (Status) &&\r | |
343 | !EFI_ERROR (OpenStatus) &&\r | |
344 | Status != EFI_MEDIA_CHANGED &&\r | |
345 | !(MediaPresent && Status == EFI_NO_MEDIA)) {\r | |
adbcbf8f | 346 | gBS->CloseProtocol (\r |
347 | ControllerHandle,\r | |
348 | &gEfiDiskIoProtocolGuid,\r | |
349 | This->DriverBindingHandle,\r | |
350 | ControllerHandle\r | |
351 | );\r | |
490b5ea1 | 352 | //\r |
80c83a69 | 353 | // Close Parent DiskIo2 if has.\r |
490b5ea1 | 354 | // \r |
355 | gBS->CloseProtocol (\r | |
356 | ControllerHandle,\r | |
80c83a69 | 357 | &gEfiDiskIo2ProtocolGuid,\r |
490b5ea1 | 358 | This->DriverBindingHandle,\r |
359 | ControllerHandle\r | |
360 | );\r | |
adbcbf8f | 361 | \r |
362 | gBS->CloseProtocol (\r | |
363 | ControllerHandle,\r | |
364 | &gEfiDevicePathProtocolGuid,\r | |
365 | This->DriverBindingHandle,\r | |
366 | ControllerHandle\r | |
367 | );\r | |
368 | }\r | |
369 | \r | |
15cc67e6 | 370 | Exit:\r |
371 | gBS->RestoreTPL (OldTpl);\r | |
adbcbf8f | 372 | return Status;\r |
373 | }\r | |
374 | \r | |
adbcbf8f | 375 | /**\r |
48557c65 | 376 | Stop this driver on ControllerHandle. Support stopping any child handles\r |
adbcbf8f | 377 | created by this driver.\r |
378 | \r | |
379 | @param This Protocol instance pointer.\r | |
380 | @param ControllerHandle Handle of device to stop driver on\r | |
381 | @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of\r | |
382 | children is zero stop the entire bus driver.\r | |
383 | @param ChildHandleBuffer List of Child Handles to Stop.\r | |
384 | \r | |
385 | @retval EFI_SUCCESS This driver is removed ControllerHandle\r | |
386 | @retval other This driver was not removed from this device\r | |
387 | \r | |
388 | **/\r | |
389 | EFI_STATUS\r | |
390 | EFIAPI\r | |
391 | PartitionDriverBindingStop (\r | |
392 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
393 | IN EFI_HANDLE ControllerHandle,\r | |
394 | IN UINTN NumberOfChildren,\r | |
395 | IN EFI_HANDLE *ChildHandleBuffer\r | |
396 | )\r | |
397 | {\r | |
398 | EFI_STATUS Status;\r | |
399 | UINTN Index;\r | |
400 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
490b5ea1 | 401 | EFI_BLOCK_IO2_PROTOCOL *BlockIo2;\r |
adbcbf8f | 402 | BOOLEAN AllChildrenStopped;\r |
403 | PARTITION_PRIVATE_DATA *Private;\r | |
404 | EFI_DISK_IO_PROTOCOL *DiskIo;\r | |
405 | \r | |
490b5ea1 | 406 | BlockIo = NULL;\r |
407 | BlockIo2 = NULL;\r | |
408 | Private = NULL;\r | |
409 | \r | |
adbcbf8f | 410 | if (NumberOfChildren == 0) {\r |
e3325721 HW |
411 | //\r |
412 | // In the case of re-entry of the PartitionDriverBindingStop, the\r | |
413 | // NumberOfChildren may not reflect the actual number of children on the\r | |
414 | // bus driver. Hence, additional check is needed here.\r | |
415 | //\r | |
416 | if (HasChildren (ControllerHandle)) {\r | |
417 | DEBUG((EFI_D_ERROR, "PartitionDriverBindingStop: Still has child.\n"));\r | |
418 | return EFI_DEVICE_ERROR;\r | |
419 | }\r | |
420 | \r | |
adbcbf8f | 421 | //\r |
422 | // Close the bus driver\r | |
423 | //\r | |
424 | gBS->CloseProtocol (\r | |
425 | ControllerHandle,\r | |
426 | &gEfiDiskIoProtocolGuid,\r | |
427 | This->DriverBindingHandle,\r | |
428 | ControllerHandle\r | |
429 | );\r | |
490b5ea1 | 430 | //\r |
431 | // Close Parent BlockIO2 if has.\r | |
432 | // \r | |
433 | gBS->CloseProtocol (\r | |
434 | ControllerHandle,\r | |
493d8e3a | 435 | &gEfiDiskIo2ProtocolGuid,\r |
490b5ea1 | 436 | This->DriverBindingHandle,\r |
437 | ControllerHandle\r | |
438 | );\r | |
adbcbf8f | 439 | \r |
440 | gBS->CloseProtocol (\r | |
441 | ControllerHandle,\r | |
442 | &gEfiDevicePathProtocolGuid,\r | |
443 | This->DriverBindingHandle,\r | |
444 | ControllerHandle\r | |
445 | );\r | |
adbcbf8f | 446 | return EFI_SUCCESS;\r |
447 | }\r | |
448 | \r | |
449 | AllChildrenStopped = TRUE;\r | |
450 | for (Index = 0; Index < NumberOfChildren; Index++) {\r | |
490b5ea1 | 451 | gBS->OpenProtocol (\r |
452 | ChildHandleBuffer[Index],\r | |
453 | &gEfiBlockIoProtocolGuid,\r | |
454 | (VOID **) &BlockIo,\r | |
455 | This->DriverBindingHandle,\r | |
456 | ControllerHandle,\r | |
457 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
458 | );\r | |
459 | //\r | |
460 | // Try to locate BlockIo2.\r | |
461 | //\r | |
462 | gBS->OpenProtocol (\r | |
463 | ChildHandleBuffer[Index],\r | |
464 | &gEfiBlockIo2ProtocolGuid,\r | |
465 | (VOID **) &BlockIo2,\r | |
466 | This->DriverBindingHandle,\r | |
467 | ControllerHandle,\r | |
468 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
469 | ); \r | |
470 | \r | |
d0844d13 | 471 | \r |
472 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (BlockIo);\r | |
e3325721 HW |
473 | if (Private->InStop) {\r |
474 | //\r | |
475 | // If the child handle is going to be stopped again during the re-entry\r | |
476 | // of DriverBindingStop, just do nothing.\r | |
477 | //\r | |
478 | break;\r | |
479 | }\r | |
480 | Private->InStop = TRUE;\r | |
adbcbf8f | 481 | \r |
e3325721 HW |
482 | BlockIo->FlushBlocks (BlockIo);\r |
483 | \r | |
484 | if (BlockIo2 != NULL) {\r | |
485 | Status = BlockIo2->FlushBlocksEx (BlockIo2, NULL);\r | |
486 | DEBUG((EFI_D_ERROR, "PartitionDriverBindingStop: FlushBlocksEx returned with %r\n", Status));\r | |
487 | } else {\r | |
488 | Status = EFI_SUCCESS;\r | |
489 | }\r | |
490 | \r | |
491 | gBS->CloseProtocol (\r | |
492 | ControllerHandle,\r | |
493 | &gEfiDiskIoProtocolGuid,\r | |
494 | This->DriverBindingHandle,\r | |
495 | ChildHandleBuffer[Index]\r | |
496 | );\r | |
490b5ea1 | 497 | //\r |
498 | // All Software protocols have be freed from the handle so remove it.\r | |
499 | // Remove the BlockIo Protocol if has.\r | |
500 | // Remove the BlockIo2 Protocol if has.\r | |
501 | //\r | |
502 | if (BlockIo2 != NULL) {\r | |
e3325721 HW |
503 | //\r |
504 | // Some device drivers might re-install the BlockIO(2) protocols for a\r | |
505 | // media change condition. Therefore, if the FlushBlocksEx returned with\r | |
506 | // EFI_MEDIA_CHANGED, just let the BindingStop fail to avoid potential\r | |
507 | // reference of already stopped child handle.\r | |
508 | //\r | |
509 | if (Status != EFI_MEDIA_CHANGED) {\r | |
510 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
511 | ChildHandleBuffer[Index],\r | |
512 | &gEfiDevicePathProtocolGuid,\r | |
513 | Private->DevicePath,\r | |
514 | &gEfiBlockIoProtocolGuid,\r | |
515 | &Private->BlockIo,\r | |
516 | &gEfiBlockIo2ProtocolGuid,\r | |
517 | &Private->BlockIo2,\r | |
3a3d62d2 HW |
518 | &gEfiPartitionInfoProtocolGuid,\r |
519 | &Private->PartitionInfo,\r | |
e3325721 HW |
520 | Private->EspGuid,\r |
521 | NULL,\r | |
522 | NULL\r | |
523 | );\r | |
524 | }\r | |
490b5ea1 | 525 | } else {\r |
490b5ea1 | 526 | Status = gBS->UninstallMultipleProtocolInterfaces (\r |
527 | ChildHandleBuffer[Index],\r | |
528 | &gEfiDevicePathProtocolGuid,\r | |
529 | Private->DevicePath,\r | |
530 | &gEfiBlockIoProtocolGuid,\r | |
531 | &Private->BlockIo,\r | |
3a3d62d2 HW |
532 | &gEfiPartitionInfoProtocolGuid,\r |
533 | &Private->PartitionInfo,\r | |
490b5ea1 | 534 | Private->EspGuid,\r |
535 | NULL,\r | |
536 | NULL\r | |
537 | );\r | |
538 | }\r | |
adbcbf8f | 539 | \r |
490b5ea1 | 540 | if (EFI_ERROR (Status)) {\r |
e3325721 | 541 | Private->InStop = FALSE;\r |
490b5ea1 | 542 | gBS->OpenProtocol (\r |
543 | ControllerHandle,\r | |
544 | &gEfiDiskIoProtocolGuid,\r | |
545 | (VOID **) &DiskIo,\r | |
546 | This->DriverBindingHandle,\r | |
547 | ChildHandleBuffer[Index],\r | |
548 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
549 | );\r | |
550 | } else {\r | |
551 | FreePool (Private->DevicePath);\r | |
552 | FreePool (Private);\r | |
adbcbf8f | 553 | }\r |
554 | \r | |
555 | if (EFI_ERROR (Status)) {\r | |
556 | AllChildrenStopped = FALSE;\r | |
e3325721 HW |
557 | if (Status == EFI_MEDIA_CHANGED) {\r |
558 | break;\r | |
559 | }\r | |
adbcbf8f | 560 | }\r |
561 | }\r | |
562 | \r | |
563 | if (!AllChildrenStopped) {\r | |
564 | return EFI_DEVICE_ERROR;\r | |
565 | }\r | |
566 | \r | |
567 | return EFI_SUCCESS;\r | |
568 | }\r | |
569 | \r | |
570 | \r | |
571 | /**\r | |
572 | Reset the Block Device.\r | |
573 | \r | |
574 | @param This Protocol instance pointer.\r | |
575 | @param ExtendedVerification Driver may perform diagnostics on reset.\r | |
576 | \r | |
577 | @retval EFI_SUCCESS The device was reset.\r | |
578 | @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r | |
579 | not be reset.\r | |
580 | \r | |
581 | **/\r | |
adbcbf8f | 582 | EFI_STATUS\r |
583 | EFIAPI\r | |
584 | PartitionReset (\r | |
585 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
586 | IN BOOLEAN ExtendedVerification\r | |
587 | )\r | |
588 | {\r | |
589 | PARTITION_PRIVATE_DATA *Private;\r | |
590 | \r | |
591 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);\r | |
592 | \r | |
593 | return Private->ParentBlockIo->Reset (\r | |
594 | Private->ParentBlockIo,\r | |
595 | ExtendedVerification\r | |
596 | );\r | |
597 | }\r | |
598 | \r | |
fcf5e49d RN |
599 | /**\r |
600 | Probe the media status and return EFI_NO_MEDIA or EFI_MEDIA_CHANGED\r | |
601 | for no media or media change case. Otherwise DefaultStatus is returned.\r | |
602 | \r | |
603 | @param DiskIo Pointer to the DiskIo instance.\r | |
604 | @param MediaId Id of the media, changes every time the media is replaced.\r | |
605 | @param DefaultStatus The default status to return when it's not the no media\r | |
606 | or media change case.\r | |
607 | \r | |
608 | @retval EFI_NO_MEDIA There is no media.\r | |
609 | @retval EFI_MEDIA_CHANGED The media was changed.\r | |
610 | @retval others The default status to return.\r | |
611 | **/\r | |
612 | EFI_STATUS\r | |
613 | ProbeMediaStatus (\r | |
614 | IN EFI_DISK_IO_PROTOCOL *DiskIo,\r | |
615 | IN UINT32 MediaId,\r | |
616 | IN EFI_STATUS DefaultStatus\r | |
617 | )\r | |
618 | {\r | |
619 | EFI_STATUS Status;\r | |
df473cc1 | 620 | UINT8 Buffer[1];\r |
fcf5e49d RN |
621 | \r |
622 | //\r | |
df473cc1 RC |
623 | // Read 1 byte from offset 0 to check if the MediaId is still valid.\r |
624 | // The reading operation is synchronious thus it is not worth it to\r | |
625 | // allocate a buffer from the pool. The destination buffer for the\r | |
626 | // data is in the stack.\r | |
fcf5e49d | 627 | //\r |
df473cc1 | 628 | Status = DiskIo->ReadDisk (DiskIo, MediaId, 0, 1, (VOID*)Buffer);\r |
fcf5e49d RN |
629 | if ((Status == EFI_NO_MEDIA) || (Status == EFI_MEDIA_CHANGED)) {\r |
630 | return Status;\r | |
631 | }\r | |
632 | return DefaultStatus;\r | |
633 | }\r | |
adbcbf8f | 634 | \r |
635 | /**\r | |
636 | Read by using the Disk IO protocol on the parent device. Lba addresses\r | |
637 | must be converted to byte offsets.\r | |
638 | \r | |
639 | @param This Protocol instance pointer.\r | |
640 | @param MediaId Id of the media, changes every time the media is replaced.\r | |
641 | @param Lba The starting Logical Block Address to read from\r | |
642 | @param BufferSize Size of Buffer, must be a multiple of device block size.\r | |
643 | @param Buffer Buffer containing read data\r | |
644 | \r | |
645 | @retval EFI_SUCCESS The data was read correctly from the device.\r | |
646 | @retval EFI_DEVICE_ERROR The device reported an error while performing the read.\r | |
647 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
648 | @retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.\r | |
649 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
650 | @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not\r | |
651 | valid for the device.\r | |
652 | \r | |
653 | **/\r | |
adbcbf8f | 654 | EFI_STATUS\r |
655 | EFIAPI\r | |
656 | PartitionReadBlocks (\r | |
657 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
658 | IN UINT32 MediaId,\r | |
659 | IN EFI_LBA Lba,\r | |
660 | IN UINTN BufferSize,\r | |
661 | OUT VOID *Buffer\r | |
662 | )\r | |
663 | {\r | |
664 | PARTITION_PRIVATE_DATA *Private;\r | |
665 | UINT64 Offset;\r | |
666 | \r | |
667 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);\r | |
668 | \r | |
669 | if (BufferSize % Private->BlockSize != 0) {\r | |
fcf5e49d | 670 | return ProbeMediaStatus (Private->DiskIo, MediaId, EFI_BAD_BUFFER_SIZE);\r |
adbcbf8f | 671 | }\r |
672 | \r | |
673 | Offset = MultU64x32 (Lba, Private->BlockSize) + Private->Start;\r | |
674 | if (Offset + BufferSize > Private->End) {\r | |
fcf5e49d | 675 | return ProbeMediaStatus (Private->DiskIo, MediaId, EFI_INVALID_PARAMETER);\r |
adbcbf8f | 676 | }\r |
677 | //\r | |
678 | // Because some kinds of partition have different block size from their parent\r | |
679 | // device, we call the Disk IO protocol on the parent device, not the Block IO\r | |
680 | // protocol\r | |
681 | //\r | |
682 | return Private->DiskIo->ReadDisk (Private->DiskIo, MediaId, Offset, BufferSize, Buffer);\r | |
683 | }\r | |
684 | \r | |
685 | /**\r | |
686 | Write by using the Disk IO protocol on the parent device. Lba addresses\r | |
687 | must be converted to byte offsets.\r | |
688 | \r | |
490b5ea1 | 689 | @param[in] This Protocol instance pointer.\r |
690 | @param[in] MediaId Id of the media, changes every time the media is replaced.\r | |
691 | @param[in] Lba The starting Logical Block Address to read from\r | |
692 | @param[in] BufferSize Size of Buffer, must be a multiple of device block size.\r | |
693 | @param[in] Buffer Buffer containing data to be written to device.\r | |
adbcbf8f | 694 | \r |
695 | @retval EFI_SUCCESS The data was written correctly to the device.\r | |
696 | @retval EFI_WRITE_PROTECTED The device can not be written to.\r | |
697 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
698 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
699 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
700 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
701 | @retval EFI_INVALID_PARAMETER The write request contains a LBA that is not\r | |
702 | valid for the device.\r | |
703 | \r | |
704 | **/\r | |
adbcbf8f | 705 | EFI_STATUS\r |
706 | EFIAPI\r | |
707 | PartitionWriteBlocks (\r | |
708 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
709 | IN UINT32 MediaId,\r | |
710 | IN EFI_LBA Lba,\r | |
711 | IN UINTN BufferSize,\r | |
490b5ea1 | 712 | IN VOID *Buffer\r |
adbcbf8f | 713 | )\r |
714 | {\r | |
715 | PARTITION_PRIVATE_DATA *Private;\r | |
716 | UINT64 Offset;\r | |
717 | \r | |
718 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);\r | |
719 | \r | |
720 | if (BufferSize % Private->BlockSize != 0) {\r | |
fcf5e49d | 721 | return ProbeMediaStatus (Private->DiskIo, MediaId, EFI_BAD_BUFFER_SIZE);\r |
adbcbf8f | 722 | }\r |
723 | \r | |
724 | Offset = MultU64x32 (Lba, Private->BlockSize) + Private->Start;\r | |
725 | if (Offset + BufferSize > Private->End) {\r | |
fcf5e49d | 726 | return ProbeMediaStatus (Private->DiskIo, MediaId, EFI_INVALID_PARAMETER);\r |
adbcbf8f | 727 | }\r |
728 | //\r | |
729 | // Because some kinds of partition have different block size from their parent\r | |
730 | // device, we call the Disk IO protocol on the parent device, not the Block IO\r | |
731 | // protocol\r | |
732 | //\r | |
733 | return Private->DiskIo->WriteDisk (Private->DiskIo, MediaId, Offset, BufferSize, Buffer);\r | |
734 | }\r | |
735 | \r | |
736 | \r | |
737 | /**\r | |
738 | Flush the parent Block Device.\r | |
739 | \r | |
740 | @param This Protocol instance pointer.\r | |
741 | \r | |
742 | @retval EFI_SUCCESS All outstanding data was written to the device\r | |
743 | @retval EFI_DEVICE_ERROR The device reported an error while writting back the data\r | |
744 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
745 | \r | |
746 | **/\r | |
adbcbf8f | 747 | EFI_STATUS\r |
748 | EFIAPI\r | |
749 | PartitionFlushBlocks (\r | |
750 | IN EFI_BLOCK_IO_PROTOCOL *This\r | |
751 | )\r | |
752 | {\r | |
753 | PARTITION_PRIVATE_DATA *Private;\r | |
754 | \r | |
755 | Private = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (This);\r | |
756 | \r | |
757 | return Private->ParentBlockIo->FlushBlocks (Private->ParentBlockIo);\r | |
758 | }\r | |
759 | \r | |
65fd3952 RN |
760 | /**\r |
761 | Probe the media status and return EFI_NO_MEDIA or EFI_MEDIA_CHANGED\r | |
762 | for no media or media change case. Otherwise DefaultStatus is returned.\r | |
763 | \r | |
493d8e3a | 764 | @param DiskIo2 Pointer to the DiskIo2 instance.\r |
65fd3952 RN |
765 | @param MediaId Id of the media, changes every time the media is replaced.\r |
766 | @param DefaultStatus The default status to return when it's not the no media\r | |
767 | or media change case.\r | |
768 | \r | |
769 | @retval EFI_NO_MEDIA There is no media.\r | |
770 | @retval EFI_MEDIA_CHANGED The media was changed.\r | |
771 | @retval others The default status to return.\r | |
772 | **/\r | |
773 | EFI_STATUS\r | |
774 | ProbeMediaStatusEx (\r | |
493d8e3a | 775 | IN EFI_DISK_IO2_PROTOCOL *DiskIo2,\r |
65fd3952 RN |
776 | IN UINT32 MediaId,\r |
777 | IN EFI_STATUS DefaultStatus\r | |
778 | )\r | |
779 | {\r | |
780 | EFI_STATUS Status;\r | |
781 | \r | |
782 | //\r | |
493d8e3a | 783 | // Read 1 byte from offset 0 but passing NULL as buffer pointer\r |
65fd3952 | 784 | //\r |
493d8e3a | 785 | Status = DiskIo2->ReadDiskEx (DiskIo2, MediaId, 0, NULL, 1, NULL);\r |
65fd3952 RN |
786 | if ((Status == EFI_NO_MEDIA) || (Status == EFI_MEDIA_CHANGED)) {\r |
787 | return Status;\r | |
788 | }\r | |
789 | return DefaultStatus;\r | |
790 | }\r | |
791 | \r | |
490b5ea1 | 792 | /**\r |
793 | Reset the Block Device throught Block I/O2 protocol.\r | |
794 | \r | |
795 | @param This Protocol instance pointer.\r | |
796 | @param ExtendedVerification Driver may perform diagnostics on reset.\r | |
797 | \r | |
798 | @retval EFI_SUCCESS The device was reset.\r | |
799 | @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r | |
800 | not be reset.\r | |
801 | \r | |
802 | **/\r | |
803 | EFI_STATUS\r | |
804 | EFIAPI\r | |
805 | PartitionResetEx (\r | |
806 | IN EFI_BLOCK_IO2_PROTOCOL *This,\r | |
807 | IN BOOLEAN ExtendedVerification\r | |
808 | )\r | |
809 | {\r | |
810 | PARTITION_PRIVATE_DATA *Private;\r | |
811 | \r | |
812 | Private = PARTITION_DEVICE_FROM_BLOCK_IO2_THIS (This);\r | |
813 | \r | |
814 | return Private->ParentBlockIo2->Reset (\r | |
815 | Private->ParentBlockIo2,\r | |
816 | ExtendedVerification\r | |
817 | );\r | |
818 | }\r | |
819 | \r | |
493d8e3a RN |
820 | /**\r |
821 | The general callback for the DiskIo2 interfaces.\r | |
822 | @param Event Event whose notification function is being invoked.\r | |
823 | @param Context The pointer to the notification function's context,\r | |
824 | which points to the PARTITION_ACCESS_TASK instance.\r | |
825 | **/\r | |
826 | VOID\r | |
827 | EFIAPI\r | |
828 | PartitionOnAccessComplete (\r | |
829 | IN EFI_EVENT Event,\r | |
830 | IN VOID *Context\r | |
831 | )\r | |
832 | {\r | |
833 | PARTITION_ACCESS_TASK *Task;\r | |
834 | \r | |
835 | Task = (PARTITION_ACCESS_TASK *) Context;\r | |
836 | \r | |
837 | gBS->CloseEvent (Event);\r | |
838 | \r | |
839 | Task->BlockIo2Token->TransactionStatus = Task->DiskIo2Token.TransactionStatus;\r | |
840 | gBS->SignalEvent (Task->BlockIo2Token->Event);\r | |
841 | \r | |
842 | FreePool (Task);\r | |
843 | }\r | |
844 | \r | |
845 | /**\r | |
846 | Create a new PARTITION_ACCESS_TASK instance.\r | |
847 | \r | |
848 | @param Token Pointer to the EFI_BLOCK_IO2_TOKEN.\r | |
849 | \r | |
850 | @return Pointer to the created PARTITION_ACCESS_TASK instance or NULL upon failure.\r | |
851 | **/\r | |
852 | PARTITION_ACCESS_TASK *\r | |
853 | PartitionCreateAccessTask (\r | |
854 | IN EFI_BLOCK_IO2_TOKEN *Token\r | |
855 | )\r | |
856 | {\r | |
857 | EFI_STATUS Status;\r | |
858 | PARTITION_ACCESS_TASK *Task;\r | |
859 | \r | |
860 | Task = AllocatePool (sizeof (*Task));\r | |
861 | if (Task == NULL) {\r | |
862 | return NULL;\r | |
863 | }\r | |
864 | \r | |
865 | Status = gBS->CreateEvent (\r | |
866 | EVT_NOTIFY_SIGNAL,\r | |
80c83a69 | 867 | TPL_NOTIFY,\r |
493d8e3a RN |
868 | PartitionOnAccessComplete,\r |
869 | Task,\r | |
870 | &Task->DiskIo2Token.Event\r | |
871 | );\r | |
872 | if (EFI_ERROR (Status)) {\r | |
873 | FreePool (Task);\r | |
874 | return NULL;\r | |
875 | }\r | |
876 | \r | |
877 | Task->BlockIo2Token = Token;\r | |
878 | \r | |
879 | return Task;\r | |
880 | }\r | |
881 | \r | |
490b5ea1 | 882 | /**\r |
883 | Read BufferSize bytes from Lba into Buffer.\r | |
884 | \r | |
885 | This function reads the requested number of blocks from the device. All the\r | |
886 | blocks are read, or an error is returned.\r | |
887 | If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_or EFI_MEDIA_CHANGED is returned and\r | |
888 | non-blocking I/O is being used, the Event associated with this request will\r | |
889 | not be signaled.\r | |
890 | \r | |
891 | @param[in] This Indicates a pointer to the calling context.\r | |
892 | @param[in] MediaId Id of the media, changes every time the media is \r | |
893 | replaced.\r | |
894 | @param[in] Lba The starting Logical Block Address to read from.\r | |
895 | @param[in, out] Token A pointer to the token associated with the transaction.\r | |
896 | @param[in] BufferSize Size of Buffer, must be a multiple of device block size. \r | |
897 | @param[out] Buffer A pointer to the destination buffer for the data. The \r | |
898 | caller is responsible for either having implicit or \r | |
899 | explicit ownership of the buffer.\r | |
900 | \r | |
901 | @retval EFI_SUCCESS The read request was queued if Token->Event is\r | |
902 | not NULL.The data was read correctly from the\r | |
903 | device if the Token->Event is NULL.\r | |
904 | @retval EFI_DEVICE_ERROR The device reported an error while performing\r | |
905 | the read.\r | |
906 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
907 | @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r | |
908 | @retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of the\r | |
909 | intrinsic block size of the device.\r | |
910 | @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid, \r | |
911 | or the buffer is not on proper alignment.\r | |
912 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r | |
913 | of resources.\r | |
914 | **/\r | |
915 | EFI_STATUS\r | |
916 | EFIAPI\r | |
917 | PartitionReadBlocksEx (\r | |
918 | IN EFI_BLOCK_IO2_PROTOCOL *This,\r | |
919 | IN UINT32 MediaId,\r | |
920 | IN EFI_LBA Lba,\r | |
921 | IN OUT EFI_BLOCK_IO2_TOKEN *Token,\r | |
922 | IN UINTN BufferSize,\r | |
923 | OUT VOID *Buffer\r | |
924 | )\r | |
925 | {\r | |
493d8e3a | 926 | EFI_STATUS Status;\r |
490b5ea1 | 927 | PARTITION_PRIVATE_DATA *Private;\r |
928 | UINT64 Offset;\r | |
493d8e3a | 929 | PARTITION_ACCESS_TASK *Task;\r |
490b5ea1 | 930 | \r |
65fd3952 RN |
931 | Private = PARTITION_DEVICE_FROM_BLOCK_IO2_THIS (This);\r |
932 | \r | |
490b5ea1 | 933 | if (BufferSize % Private->BlockSize != 0) {\r |
493d8e3a | 934 | return ProbeMediaStatusEx (Private->DiskIo2, MediaId, EFI_BAD_BUFFER_SIZE);\r |
490b5ea1 | 935 | }\r |
936 | \r | |
937 | Offset = MultU64x32 (Lba, Private->BlockSize) + Private->Start;\r | |
938 | if (Offset + BufferSize > Private->End) {\r | |
493d8e3a | 939 | return ProbeMediaStatusEx (Private->DiskIo2, MediaId, EFI_INVALID_PARAMETER);\r |
490b5ea1 | 940 | }\r |
941 | \r | |
493d8e3a RN |
942 | if ((Token != NULL) && (Token->Event != NULL)) {\r |
943 | Task = PartitionCreateAccessTask (Token);\r | |
944 | if (Task == NULL) {\r | |
945 | return EFI_OUT_OF_RESOURCES;\r | |
946 | }\r | |
490b5ea1 | 947 | \r |
493d8e3a RN |
948 | Status = Private->DiskIo2->ReadDiskEx (Private->DiskIo2, MediaId, Offset, &Task->DiskIo2Token, BufferSize, Buffer);\r |
949 | if (EFI_ERROR (Status)) {\r | |
950 | gBS->CloseEvent (Task->DiskIo2Token.Event);\r | |
951 | FreePool (Task);\r | |
952 | }\r | |
953 | } else {\r | |
954 | Status = Private->DiskIo2->ReadDiskEx (Private->DiskIo2, MediaId, Offset, NULL, BufferSize, Buffer);\r | |
490b5ea1 | 955 | }\r |
956 | \r | |
493d8e3a | 957 | return Status;\r |
490b5ea1 | 958 | }\r |
959 | \r | |
960 | /**\r | |
961 | Write BufferSize bytes from Lba into Buffer.\r | |
962 | \r | |
963 | This function writes the requested number of blocks to the device. All blocks\r | |
964 | are written, or an error is returned.If EFI_DEVICE_ERROR, EFI_NO_MEDIA,\r | |
965 | EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED is returned and non-blocking I/O is\r | |
966 | being used, the Event associated with this request will not be signaled.\r | |
967 | \r | |
968 | @param[in] This Indicates a pointer to the calling context.\r | |
969 | @param[in] MediaId The media ID that the write request is for.\r | |
970 | @param[in] Lba The starting logical block address to be written. The\r | |
971 | caller is responsible for writing to only legitimate\r | |
972 | locations.\r | |
973 | @param[in, out] Token A pointer to the token associated with the transaction.\r | |
974 | @param[in] BufferSize Size of Buffer, must be a multiple of device block size.\r | |
975 | @param[in] Buffer A pointer to the source buffer for the data.\r | |
976 | \r | |
977 | @retval EFI_SUCCESS The write request was queued if Event is not NULL.\r | |
978 | The data was written correctly to the device if\r | |
979 | the Event is NULL.\r | |
980 | @retval EFI_WRITE_PROTECTED The device can not be written to.\r | |
981 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
982 | @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r | |
983 | @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r | |
984 | @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.\r | |
985 | @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid, \r | |
986 | or the buffer is not on proper alignment.\r | |
987 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r | |
988 | of resources.\r | |
989 | \r | |
990 | **/\r | |
991 | EFI_STATUS\r | |
992 | EFIAPI\r | |
993 | PartitionWriteBlocksEx (\r | |
994 | IN EFI_BLOCK_IO2_PROTOCOL *This,\r | |
995 | IN UINT32 MediaId,\r | |
996 | IN EFI_LBA Lba,\r | |
997 | IN OUT EFI_BLOCK_IO2_TOKEN *Token,\r | |
998 | IN UINTN BufferSize,\r | |
999 | IN VOID *Buffer\r | |
1000 | )\r | |
1001 | {\r | |
493d8e3a | 1002 | EFI_STATUS Status;\r |
490b5ea1 | 1003 | PARTITION_PRIVATE_DATA *Private;\r |
1004 | UINT64 Offset;\r | |
493d8e3a | 1005 | PARTITION_ACCESS_TASK *Task;\r |
490b5ea1 | 1006 | \r |
65fd3952 RN |
1007 | Private = PARTITION_DEVICE_FROM_BLOCK_IO2_THIS (This);\r |
1008 | \r | |
490b5ea1 | 1009 | if (BufferSize % Private->BlockSize != 0) {\r |
493d8e3a | 1010 | return ProbeMediaStatusEx (Private->DiskIo2, MediaId, EFI_BAD_BUFFER_SIZE);\r |
490b5ea1 | 1011 | }\r |
1012 | \r | |
1013 | Offset = MultU64x32 (Lba, Private->BlockSize) + Private->Start;\r | |
1014 | if (Offset + BufferSize > Private->End) {\r | |
493d8e3a | 1015 | return ProbeMediaStatusEx (Private->DiskIo2, MediaId, EFI_INVALID_PARAMETER);\r |
490b5ea1 | 1016 | }\r |
493d8e3a RN |
1017 | \r |
1018 | if ((Token != NULL) && (Token->Event != NULL)) {\r | |
1019 | Task = PartitionCreateAccessTask (Token);\r | |
1020 | if (Task == NULL) {\r | |
1021 | return EFI_OUT_OF_RESOURCES;\r | |
1022 | }\r | |
490b5ea1 | 1023 | \r |
493d8e3a RN |
1024 | Status = Private->DiskIo2->WriteDiskEx (Private->DiskIo2, MediaId, Offset, &Task->DiskIo2Token, BufferSize, Buffer);\r |
1025 | if (EFI_ERROR (Status)) {\r | |
1026 | gBS->CloseEvent (Task->DiskIo2Token.Event);\r | |
1027 | FreePool (Task);\r | |
1028 | }\r | |
1029 | } else {\r | |
1030 | Status = Private->DiskIo2->WriteDiskEx (Private->DiskIo2, MediaId, Offset, NULL, BufferSize, Buffer);\r | |
490b5ea1 | 1031 | }\r |
493d8e3a | 1032 | return Status;\r |
490b5ea1 | 1033 | }\r |
1034 | \r | |
1035 | /**\r | |
1036 | Flush the Block Device.\r | |
1037 | \r | |
1038 | If EFI_DEVICE_ERROR, EFI_NO_MEDIA,_EFI_WRITE_PROTECTED or EFI_MEDIA_CHANGED\r | |
1039 | is returned and non-blocking I/O is being used, the Event associated with\r | |
1040 | this request will not be signaled. \r | |
1041 | \r | |
1042 | @param[in] This Indicates a pointer to the calling context.\r | |
86d8e199 | 1043 | @param[in, out] Token A pointer to the token associated with the transaction\r |
490b5ea1 | 1044 | \r |
1045 | @retval EFI_SUCCESS The flush request was queued if Event is not NULL.\r | |
1046 | All outstanding data was written correctly to the\r | |
1047 | device if the Event is NULL.\r | |
1048 | @retval EFI_DEVICE_ERROR The device reported an error while writting back\r | |
1049 | the data.\r | |
1050 | @retval EFI_WRITE_PROTECTED The device cannot be written to.\r | |
1051 | @retval EFI_NO_MEDIA There is no media in the device.\r | |
1052 | @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r | |
1053 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack\r | |
1054 | of resources.\r | |
1055 | \r | |
1056 | **/\r | |
1057 | EFI_STATUS\r | |
1058 | EFIAPI\r | |
1059 | PartitionFlushBlocksEx (\r | |
1060 | IN EFI_BLOCK_IO2_PROTOCOL *This,\r | |
1061 | IN OUT EFI_BLOCK_IO2_TOKEN *Token\r | |
1062 | )\r | |
1063 | {\r | |
493d8e3a | 1064 | EFI_STATUS Status;\r |
490b5ea1 | 1065 | PARTITION_PRIVATE_DATA *Private;\r |
493d8e3a | 1066 | PARTITION_ACCESS_TASK *Task;\r |
490b5ea1 | 1067 | \r |
1068 | Private = PARTITION_DEVICE_FROM_BLOCK_IO2_THIS (This);\r | |
1069 | \r | |
493d8e3a RN |
1070 | if ((Token != NULL) && (Token->Event != NULL)) {\r |
1071 | Task = PartitionCreateAccessTask (Token);\r | |
1072 | if (Task == NULL) {\r | |
1073 | return EFI_OUT_OF_RESOURCES;\r | |
1074 | }\r | |
490b5ea1 | 1075 | \r |
493d8e3a RN |
1076 | Status = Private->DiskIo2->FlushDiskEx (Private->DiskIo2, &Task->DiskIo2Token);\r |
1077 | if (EFI_ERROR (Status)) {\r | |
1078 | gBS->CloseEvent (Task->DiskIo2Token.Event);\r | |
1079 | FreePool (Task);\r | |
1080 | }\r | |
1081 | } else {\r | |
1082 | Status = Private->DiskIo2->FlushDiskEx (Private->DiskIo2, NULL);\r | |
1083 | }\r | |
1084 | return Status;\r | |
490b5ea1 | 1085 | }\r |
adbcbf8f | 1086 | \r |
1087 | \r | |
1088 | /**\r | |
1089 | Create a child handle for a logical block device that represents the\r | |
1090 | bytes Start to End of the Parent Block IO device.\r | |
1091 | \r | |
490b5ea1 | 1092 | @param[in] This Protocol instance pointer.\r |
1093 | @param[in] ParentHandle Parent Handle for new child.\r | |
1094 | @param[in] ParentDiskIo Parent DiskIo interface.\r | |
493d8e3a | 1095 | @param[in] ParentDiskIo2 Parent DiskIo2 interface.\r |
490b5ea1 | 1096 | @param[in] ParentBlockIo Parent BlockIo interface.\r |
1097 | @param[in] ParentBlockIo2 Parent BlockIo2 interface.\r | |
1098 | @param[in] ParentDevicePath Parent Device Path.\r | |
1099 | @param[in] DevicePathNode Child Device Path node.\r | |
3a3d62d2 | 1100 | @param[in] PartitionInfo Child Partition Information interface.\r |
490b5ea1 | 1101 | @param[in] Start Start Block.\r |
1102 | @param[in] End End Block.\r | |
1103 | @param[in] BlockSize Child block size.\r | |
490b5ea1 | 1104 | \r |
1105 | @retval EFI_SUCCESS A child handle was added.\r | |
1106 | @retval other A child handle was not added.\r | |
adbcbf8f | 1107 | \r |
1108 | **/\r | |
1109 | EFI_STATUS\r | |
1110 | PartitionInstallChildHandle (\r | |
1111 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
1112 | IN EFI_HANDLE ParentHandle,\r | |
1113 | IN EFI_DISK_IO_PROTOCOL *ParentDiskIo,\r | |
493d8e3a | 1114 | IN EFI_DISK_IO2_PROTOCOL *ParentDiskIo2,\r |
adbcbf8f | 1115 | IN EFI_BLOCK_IO_PROTOCOL *ParentBlockIo,\r |
490b5ea1 | 1116 | IN EFI_BLOCK_IO2_PROTOCOL *ParentBlockIo2,\r |
adbcbf8f | 1117 | IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,\r |
1118 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePathNode,\r | |
3a3d62d2 | 1119 | IN EFI_PARTITION_INFO_PROTOCOL *PartitionInfo,\r |
adbcbf8f | 1120 | IN EFI_LBA Start,\r |
1121 | IN EFI_LBA End,\r | |
3a3d62d2 | 1122 | IN UINT32 BlockSize\r |
adbcbf8f | 1123 | )\r |
1124 | {\r | |
1125 | EFI_STATUS Status;\r | |
1126 | PARTITION_PRIVATE_DATA *Private;\r | |
1127 | \r | |
490b5ea1 | 1128 | Status = EFI_SUCCESS;\r |
adbcbf8f | 1129 | Private = AllocateZeroPool (sizeof (PARTITION_PRIVATE_DATA));\r |
1130 | if (Private == NULL) {\r | |
1131 | return EFI_OUT_OF_RESOURCES;\r | |
1132 | }\r | |
1133 | \r | |
1134 | Private->Signature = PARTITION_PRIVATE_DATA_SIGNATURE;\r | |
1135 | \r | |
1136 | Private->Start = MultU64x32 (Start, ParentBlockIo->Media->BlockSize);\r | |
1137 | Private->End = MultU64x32 (End + 1, ParentBlockIo->Media->BlockSize);\r | |
1138 | \r | |
1139 | Private->BlockSize = BlockSize;\r | |
1140 | Private->ParentBlockIo = ParentBlockIo;\r | |
490b5ea1 | 1141 | Private->ParentBlockIo2 = ParentBlockIo2;\r |
adbcbf8f | 1142 | Private->DiskIo = ParentDiskIo;\r |
493d8e3a | 1143 | Private->DiskIo2 = ParentDiskIo2;\r |
adbcbf8f | 1144 | \r |
d0844d13 | 1145 | //\r |
1146 | // Set the BlockIO into Private Data.\r | |
1147 | //\r | |
1148 | Private->BlockIo.Revision = ParentBlockIo->Revision;\r | |
1149 | \r | |
1150 | Private->BlockIo.Media = &Private->Media;\r | |
1151 | CopyMem (Private->BlockIo.Media, ParentBlockIo->Media, sizeof (EFI_BLOCK_IO_MEDIA));\r | |
490b5ea1 | 1152 | \r |
d0844d13 | 1153 | Private->BlockIo.Reset = PartitionReset;\r |
1154 | Private->BlockIo.ReadBlocks = PartitionReadBlocks;\r | |
1155 | Private->BlockIo.WriteBlocks = PartitionWriteBlocks;\r | |
1156 | Private->BlockIo.FlushBlocks = PartitionFlushBlocks;\r | |
490b5ea1 | 1157 | \r |
d0844d13 | 1158 | //\r |
1159 | // Set the BlockIO2 into Private Data.\r | |
1160 | //\r | |
493d8e3a RN |
1161 | if (Private->DiskIo2 != NULL) {\r |
1162 | ASSERT (Private->ParentBlockIo2 != NULL);\r | |
490b5ea1 | 1163 | Private->BlockIo2.Media = &Private->Media2;\r |
1164 | CopyMem (Private->BlockIo2.Media, ParentBlockIo2->Media, sizeof (EFI_BLOCK_IO_MEDIA));\r | |
1165 | \r | |
1166 | Private->BlockIo2.Reset = PartitionResetEx;\r | |
1167 | Private->BlockIo2.ReadBlocksEx = PartitionReadBlocksEx;\r | |
1168 | Private->BlockIo2.WriteBlocksEx = PartitionWriteBlocksEx;\r | |
1169 | Private->BlockIo2.FlushBlocksEx = PartitionFlushBlocksEx; \r | |
1170 | }\r | |
67f802ed | 1171 | \r |
67f802ed | 1172 | Private->Media.IoAlign = 0;\r |
490b5ea1 | 1173 | Private->Media.LogicalPartition = TRUE;\r |
adbcbf8f | 1174 | Private->Media.LastBlock = DivU64x32 (\r |
1175 | MultU64x32 (\r | |
1176 | End - Start + 1,\r | |
d0844d13 | 1177 | ParentBlockIo->Media->BlockSize\r |
adbcbf8f | 1178 | ),\r |
490b5ea1 | 1179 | BlockSize\r |
adbcbf8f | 1180 | ) - 1;\r |
1181 | \r | |
67f802ed | 1182 | Private->Media.BlockSize = (UINT32) BlockSize;\r |
adbcbf8f | 1183 | \r |
493d8e3a | 1184 | Private->Media2.IoAlign = 0;\r |
490b5ea1 | 1185 | Private->Media2.LogicalPartition = TRUE;\r |
1186 | Private->Media2.LastBlock = Private->Media.LastBlock;\r | |
1187 | Private->Media2.BlockSize = (UINT32) BlockSize;\r | |
1188 | \r | |
fe3b68bb | 1189 | //\r |
0e87144e | 1190 | // Per UEFI Spec, LowestAlignedLba, LogicalBlocksPerPhysicalBlock and OptimalTransferLengthGranularity must be 0\r |
fe3b68bb RN |
1191 | // for logical partitions.\r |
1192 | //\r | |
1193 | if (Private->BlockIo.Revision >= EFI_BLOCK_IO_PROTOCOL_REVISION2) {\r | |
c582ad45 EB |
1194 | Private->Media.LowestAlignedLba = 0;\r |
1195 | Private->Media.LogicalBlocksPerPhysicalBlock = 0;\r | |
1196 | Private->Media2.LowestAlignedLba = 0;\r | |
1197 | Private->Media2.LogicalBlocksPerPhysicalBlock = 0;\r | |
0e87144e | 1198 | if (Private->BlockIo.Revision >= EFI_BLOCK_IO_PROTOCOL_REVISION3) {\r |
c582ad45 EB |
1199 | Private->Media.OptimalTransferLengthGranularity = 0;\r |
1200 | Private->Media2.OptimalTransferLengthGranularity = 0;\r | |
0e87144e | 1201 | }\r |
fe3b68bb RN |
1202 | }\r |
1203 | \r | |
490b5ea1 | 1204 | Private->DevicePath = AppendDevicePathNode (ParentDevicePath, DevicePathNode);\r |
adbcbf8f | 1205 | \r |
1206 | if (Private->DevicePath == NULL) {\r | |
1207 | FreePool (Private);\r | |
1208 | return EFI_OUT_OF_RESOURCES;\r | |
1209 | }\r | |
1210 | \r | |
3a3d62d2 HW |
1211 | //\r |
1212 | // Set the PartitionInfo into Private Data.\r | |
1213 | //\r | |
1214 | CopyMem (&Private->PartitionInfo, PartitionInfo, sizeof (EFI_PARTITION_INFO_PROTOCOL));\r | |
1215 | \r | |
1216 | if ((PartitionInfo->System == 1)) {\r | |
adbcbf8f | 1217 | Private->EspGuid = &gEfiPartTypeSystemPartGuid;\r |
1218 | } else {\r | |
1219 | //\r | |
1220 | // If NULL InstallMultipleProtocolInterfaces will ignore it.\r | |
1221 | //\r | |
1222 | Private->EspGuid = NULL;\r | |
1223 | }\r | |
490b5ea1 | 1224 | \r |
adbcbf8f | 1225 | //\r |
490b5ea1 | 1226 | // Create the new handle. \r |
adbcbf8f | 1227 | //\r |
1228 | Private->Handle = NULL;\r | |
493d8e3a | 1229 | if (Private->DiskIo2 != NULL) {\r |
490b5ea1 | 1230 | Status = gBS->InstallMultipleProtocolInterfaces (\r |
1231 | &Private->Handle,\r | |
1232 | &gEfiDevicePathProtocolGuid,\r | |
1233 | Private->DevicePath,\r | |
1234 | &gEfiBlockIoProtocolGuid,\r | |
1235 | &Private->BlockIo,\r | |
1236 | &gEfiBlockIo2ProtocolGuid,\r | |
1237 | &Private->BlockIo2,\r | |
3a3d62d2 HW |
1238 | &gEfiPartitionInfoProtocolGuid,\r |
1239 | &Private->PartitionInfo,\r | |
490b5ea1 | 1240 | Private->EspGuid,\r |
1241 | NULL,\r | |
1242 | NULL\r | |
1243 | );\r | |
d0844d13 | 1244 | } else { \r |
1245 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
1246 | &Private->Handle,\r | |
1247 | &gEfiDevicePathProtocolGuid,\r | |
1248 | Private->DevicePath,\r | |
1249 | &gEfiBlockIoProtocolGuid,\r | |
1250 | &Private->BlockIo,\r | |
3a3d62d2 HW |
1251 | &gEfiPartitionInfoProtocolGuid,\r |
1252 | &Private->PartitionInfo,\r | |
d0844d13 | 1253 | Private->EspGuid,\r |
1254 | NULL,\r | |
1255 | NULL\r | |
1256 | );\r | |
490b5ea1 | 1257 | }\r |
adbcbf8f | 1258 | \r |
1259 | if (!EFI_ERROR (Status)) {\r | |
1260 | //\r | |
1261 | // Open the Parent Handle for the child\r | |
1262 | //\r | |
1263 | Status = gBS->OpenProtocol (\r | |
1264 | ParentHandle,\r | |
1265 | &gEfiDiskIoProtocolGuid,\r | |
1266 | (VOID **) &ParentDiskIo,\r | |
1267 | This->DriverBindingHandle,\r | |
1268 | Private->Handle,\r | |
1269 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
1270 | );\r | |
1271 | } else {\r | |
1272 | FreePool (Private->DevicePath);\r | |
1273 | FreePool (Private);\r | |
1274 | }\r | |
1275 | \r | |
1276 | return Status;\r | |
1277 | }\r | |
1278 | \r | |
1279 | \r | |
1280 | /**\r | |
1281 | The user Entry Point for module Partition. The user code starts with this function.\r | |
1282 | \r | |
1283 | @param[in] ImageHandle The firmware allocated handle for the EFI image. \r | |
1284 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
1285 | \r | |
1286 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
1287 | @retval other Some error occurs when executing this entry point.\r | |
1288 | \r | |
1289 | **/\r | |
1290 | EFI_STATUS\r | |
1291 | EFIAPI\r | |
1292 | InitializePartition (\r | |
1293 | IN EFI_HANDLE ImageHandle,\r | |
1294 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1295 | )\r | |
1296 | {\r | |
1297 | EFI_STATUS Status;\r | |
1298 | \r | |
1299 | //\r | |
1300 | // Install driver model protocol(s).\r | |
1301 | //\r | |
d38a0f44 | 1302 | Status = EfiLibInstallDriverBindingComponentName2 (\r |
adbcbf8f | 1303 | ImageHandle,\r |
1304 | SystemTable,\r | |
1305 | &gPartitionDriverBinding,\r | |
1306 | ImageHandle,\r | |
1307 | &gPartitionComponentName,\r | |
d38a0f44 | 1308 | &gPartitionComponentName2\r |
adbcbf8f | 1309 | );\r |
1310 | ASSERT_EFI_ERROR (Status);\r | |
1311 | \r | |
1312 | \r | |
1313 | return Status;\r | |
1314 | }\r | |
1315 | \r | |
e3325721 HW |
1316 | \r |
1317 | /**\r | |
1318 | Test to see if there is any child on ControllerHandle.\r | |
1319 | \r | |
1320 | @param[in] ControllerHandle Handle of device to test.\r | |
1321 | \r | |
1322 | @retval TRUE There are children on the ControllerHandle.\r | |
1323 | @retval FALSE No child is on the ControllerHandle.\r | |
1324 | \r | |
1325 | **/\r | |
1326 | BOOLEAN\r | |
1327 | HasChildren (\r | |
1328 | IN EFI_HANDLE ControllerHandle\r | |
1329 | )\r | |
1330 | {\r | |
1331 | EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfoBuffer;\r | |
1332 | UINTN EntryCount;\r | |
1333 | EFI_STATUS Status;\r | |
1334 | UINTN Index;\r | |
1335 | \r | |
1336 | Status = gBS->OpenProtocolInformation (\r | |
1337 | ControllerHandle,\r | |
1338 | &gEfiDiskIoProtocolGuid,\r | |
1339 | &OpenInfoBuffer,\r | |
1340 | &EntryCount\r | |
1341 | );\r | |
1342 | ASSERT_EFI_ERROR (Status);\r | |
1343 | \r | |
1344 | for (Index = 0; Index < EntryCount; Index++) {\r | |
1345 | if ((OpenInfoBuffer[Index].Attributes & EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER) != 0) {\r | |
1346 | break;\r | |
1347 | }\r | |
1348 | }\r | |
1349 | FreePool (OpenInfoBuffer);\r | |
1350 | \r | |
1351 | return (BOOLEAN) (Index < EntryCount);\r | |
1352 | }\r | |
1353 | \r |