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1/** @file\r
2 This file implements ATA_PASSTHRU_PROCTOCOL and EXT_SCSI_PASSTHRU_PROTOCOL interfaces\r
3 for managed ATA controllers.\r
4 \r
5 Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>\r
6 This program and the accompanying materials\r
7 are licensed and made available under the terms and conditions of the BSD License\r
8 which accompanies this distribution. The full text of the license may be found at\r
9 http://opensource.org/licenses/bsd-license.php\r
10\r
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
13\r
14**/\r
15\r
16#include "AtaAtapiPassThru.h"\r
17\r
18//\r
19// EFI_DRIVER_BINDING_PROTOCOL instance\r
20//\r
21EFI_DRIVER_BINDING_PROTOCOL gAtaAtapiPassThruDriverBinding = {\r
22 AtaAtapiPassThruSupported,\r
23 AtaAtapiPassThruStart,\r
24 AtaAtapiPassThruStop,\r
25 0x10,\r
26 NULL,\r
27 NULL\r
28};\r
29\r
30ATA_ATAPI_PASS_THRU_INSTANCE gAtaAtapiPassThruInstanceTemplate = {\r
31 ATA_ATAPI_PASS_THRU_SIGNATURE,\r
32 0, // Controller Handle\r
33 NULL, // PciIo Protocol\r
34 NULL, // IdeControllerInit Protocol\r
35 { // AtaPassThruMode\r
36 //\r
37 // According to UEFI2.3 spec Section 12.10, Drivers for non-RAID ATA controllers should set\r
38 // both EFI_ATA_PASS_THRU_ATTRIBUTES_PHYSICAL and EFI_ATA_PASS_THRU_ATTRIBUTES_LOGICAL\r
39 // bits.\r
40 // Note that the driver doesn't support AtaPassThru non blocking I/O.\r
41 //\r
42 EFI_ATA_PASS_THRU_ATTRIBUTES_PHYSICAL | EFI_ATA_PASS_THRU_ATTRIBUTES_LOGICAL,\r
43 //\r
44 // IoAlign\r
45 //\r
46 sizeof (UINTN)\r
47 },\r
48 { // AtaPassThru\r
49 NULL, \r
50 AtaPassThruPassThru,\r
51 AtaPassThruGetNextPort,\r
52 AtaPassThruGetNextDevice,\r
53 AtaPassThruBuildDevicePath,\r
54 AtaPassThruGetDevice,\r
55 AtaPassThruResetPort,\r
56 AtaPassThruResetDevice \r
57 },\r
58 { // ExtScsiPassThruMode\r
59 //\r
60 // AdapterId\r
61 //\r
62 0,\r
63 //\r
64 // According to UEFI2.3 spec Section 14.7, Drivers for non-RAID SCSI controllers should set\r
65 // both EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_PHYSICAL and EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_LOGICAL\r
66 // bits.\r
67 // Note that the driver doesn't support ExtScsiPassThru non blocking I/O.\r
68 // \r
69 EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_PHYSICAL | EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_LOGICAL,\r
70 //\r
71 // IoAlign\r
72 //\r
73 sizeof (UINTN)\r
74 },\r
75 { // ExtScsiPassThru\r
76 NULL,\r
77 ExtScsiPassThruPassThru,\r
78 ExtScsiPassThruGetNextTargetLun,\r
79 ExtScsiPassThruBuildDevicePath,\r
80 ExtScsiPassThruGetTargetLun,\r
81 ExtScsiPassThruResetChannel,\r
82 ExtScsiPassThruResetTargetLun,\r
83 ExtScsiPassThruGetNextTarget\r
84 },\r
85 EfiAtaUnknownMode, // Work Mode\r
86 { // IdeRegisters\r
87 {0},\r
88 {0}\r
89 },\r
90 { // AhciRegisters\r
91 0\r
92 },\r
93 { // DeviceList\r
94 NULL,\r
95 NULL\r
96 },\r
97 0, // OriginalAttributes\r
98 0, // PreviousPort\r
99 0, // PreviousPortMultiplier\r
100 0, // PreviousTargetId\r
101 0 // PreviousLun\r
102};\r
103\r
104ATAPI_DEVICE_PATH mAtapiDevicePathTemplate = {\r
105 {\r
106 MESSAGING_DEVICE_PATH,\r
107 MSG_ATAPI_DP,\r
108 (UINT8) (sizeof (ATAPI_DEVICE_PATH)),\r
109 (UINT8) ((sizeof (ATAPI_DEVICE_PATH)) >> 8),\r
110 },\r
111 0,\r
112 0,\r
113 0\r
114};\r
115\r
116SATA_DEVICE_PATH mSataDevicePathTemplate = {\r
117 {\r
118 MESSAGING_DEVICE_PATH,\r
119 MSG_SATA_DP,\r
120 (UINT8) (sizeof (SATA_DEVICE_PATH)),\r
121 (UINT8) ((sizeof (SATA_DEVICE_PATH)) >> 8),\r
122 },\r
123 0,\r
124 0,\r
125 0\r
126};\r
127\r
128UINT8 mScsiId[TARGET_MAX_BYTES] = {\r
129 0xFF, 0xFF, 0xFF, 0xFF,\r
130 0xFF, 0xFF, 0xFF, 0xFF,\r
131 0xFF, 0xFF, 0xFF, 0xFF,\r
132 0xFF, 0xFF, 0xFF, 0xFF\r
133};\r
134\r
135/**\r
136 The Entry Point of module.\r
137\r
138 @param[in] ImageHandle The firmware allocated handle for the EFI image. \r
139 @param[in] SystemTable A pointer to the EFI System Table.\r
140 \r
141 @retval EFI_SUCCESS The entry point is executed successfully.\r
142 @retval other Some error occurs when executing this entry point.\r
143\r
144**/\r
145EFI_STATUS\r
146EFIAPI\r
147InitializeAtaAtapiPassThru (\r
148 IN EFI_HANDLE ImageHandle,\r
149 IN EFI_SYSTEM_TABLE *SystemTable\r
150 )\r
151{\r
152 EFI_STATUS Status;\r
153\r
154 //\r
155 // Install driver model protocol(s).\r
156 //\r
157 Status = EfiLibInstallDriverBindingComponentName2 (\r
158 ImageHandle,\r
159 SystemTable,\r
160 &gAtaAtapiPassThruDriverBinding,\r
161 ImageHandle,\r
162 &gAtaAtapiPassThruComponentName,\r
163 &gAtaAtapiPassThruComponentName2\r
164 );\r
165 ASSERT_EFI_ERROR (Status);\r
166\r
167 return Status;\r
168}\r
169\r
170/**\r
171 Tests to see if this driver supports a given controller. If a child device is provided, \r
172 it further tests to see if this driver supports creating a handle for the specified child device.\r
173\r
174 This function checks to see if the driver specified by This supports the device specified by \r
175 ControllerHandle. Drivers will typically use the device path attached to \r
176 ControllerHandle and/or the services from the bus I/O abstraction attached to \r
177 ControllerHandle to determine if the driver supports ControllerHandle. This function \r
178 may be called many times during platform initialization. In order to reduce boot times, the tests \r
179 performed by this function must be very small, and take as little time as possible to execute. This \r
180 function must not change the state of any hardware devices, and this function must be aware that the \r
181 device specified by ControllerHandle may already be managed by the same driver or a \r
182 different driver. This function must match its calls to AllocatePages() with FreePages(), \r
183 AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol(). \r
184 Because ControllerHandle may have been previously started by the same driver, if a protocol is \r
185 already in the opened state, then it must not be closed with CloseProtocol(). This is required \r
186 to guarantee the state of ControllerHandle is not modified by this function.\r
187\r
188 @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
189 @param[in] ControllerHandle The handle of the controller to test. This handle \r
190 must support a protocol interface that supplies \r
191 an I/O abstraction to the driver.\r
192 @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This \r
193 parameter is ignored by device drivers, and is optional for bus \r
194 drivers. For bus drivers, if this parameter is not NULL, then \r
195 the bus driver must determine if the bus controller specified \r
196 by ControllerHandle and the child controller specified \r
197 by RemainingDevicePath are both supported by this \r
198 bus driver.\r
199\r
200 @retval EFI_SUCCESS The device specified by ControllerHandle and\r
201 RemainingDevicePath is supported by the driver specified by This.\r
202 @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and\r
203 RemainingDevicePath is already being managed by the driver\r
204 specified by This.\r
205 @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and\r
206 RemainingDevicePath is already being managed by a different\r
207 driver or an application that requires exclusive access.\r
208 Currently not implemented.\r
209 @retval EFI_UNSUPPORTED The device specified by ControllerHandle and\r
210 RemainingDevicePath is not supported by the driver specified by This.\r
211**/\r
212EFI_STATUS\r
213EFIAPI\r
214AtaAtapiPassThruSupported (\r
215 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
216 IN EFI_HANDLE Controller,\r
217 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
218 )\r
219{\r
220 EFI_STATUS Status;\r
221 EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r
222 EFI_PCI_IO_PROTOCOL *PciIo;\r
223 PCI_TYPE00 PciData;\r
224 EFI_IDE_CONTROLLER_INIT_PROTOCOL *IdeControllerInit;\r
225\r
226 //\r
227 // SATA Controller is a device driver, and should ingore the\r
228 // "RemainingDevicePath" according to UEFI spec\r
229 //\r
230 Status = gBS->OpenProtocol (\r
231 Controller,\r
232 &gEfiDevicePathProtocolGuid,\r
233 (VOID *) &ParentDevicePath,\r
234 This->DriverBindingHandle,\r
235 Controller,\r
236 EFI_OPEN_PROTOCOL_BY_DRIVER\r
237 );\r
238 if (EFI_ERROR (Status)) {\r
239 //\r
240 // EFI_ALREADY_STARTED is also an error\r
241 //\r
242 return Status;\r
243 }\r
244 //\r
245 // Close the protocol because we don't use it here\r
246 //\r
247 gBS->CloseProtocol (\r
248 Controller,\r
249 &gEfiDevicePathProtocolGuid,\r
250 This->DriverBindingHandle,\r
251 Controller\r
252 );\r
253\r
254 Status = gBS->OpenProtocol (\r
255 Controller,\r
256 &gEfiIdeControllerInitProtocolGuid,\r
257 (VOID **) &IdeControllerInit,\r
258 This->DriverBindingHandle,\r
259 Controller,\r
260 EFI_OPEN_PROTOCOL_BY_DRIVER\r
261 );\r
262\r
263 if (EFI_ERROR (Status)) {\r
264 //\r
265 // EFI_ALREADY_STARTED is also an error\r
266 //\r
267 return Status;\r
268 }\r
269 \r
270 //\r
271 // Close the I/O Abstraction(s) used to perform the supported test\r
272 //\r
273 gBS->CloseProtocol (\r
274 Controller,\r
275 &gEfiIdeControllerInitProtocolGuid,\r
276 This->DriverBindingHandle,\r
277 Controller\r
278 );\r
279\r
280 //\r
281 // Now test the EfiPciIoProtocol\r
282 //\r
283 Status = gBS->OpenProtocol (\r
284 Controller,\r
285 &gEfiPciIoProtocolGuid,\r
286 (VOID **) &PciIo,\r
287 This->DriverBindingHandle,\r
288 Controller,\r
289 EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
290 );\r
291 if (EFI_ERROR (Status)) {\r
292 return Status;\r
293 }\r
294 //\r
295 // Now further check the PCI header: Base class (offset 0x0B) and\r
296 // Sub Class (offset 0x0A). This controller should be an ATA controller\r
297 //\r
298 Status = PciIo->Pci.Read (\r
299 PciIo,\r
300 EfiPciIoWidthUint8,\r
301 PCI_CLASSCODE_OFFSET,\r
302 sizeof (PciData.Hdr.ClassCode),\r
303 PciData.Hdr.ClassCode\r
304 );\r
305 if (EFI_ERROR (Status)) {\r
306 return EFI_UNSUPPORTED;\r
307 }\r
308\r
309 if (IS_PCI_IDE (&PciData) || IS_PCI_SATADPA (&PciData)) {\r
310 return EFI_SUCCESS;\r
311 }\r
312\r
313 return EFI_UNSUPPORTED;\r
314}\r
315\r
316/**\r
317 Starts a device controller or a bus controller.\r
318\r
319 The Start() function is designed to be invoked from the EFI boot service ConnectController().\r
320 As a result, much of the error checking on the parameters to Start() has been moved into this \r
321 common boot service. It is legal to call Start() from other locations, \r
322 but the following calling restrictions must be followed, or the system behavior will not be deterministic.\r
323 1. ControllerHandle must be a valid EFI_HANDLE.\r
324 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned\r
325 EFI_DEVICE_PATH_PROTOCOL.\r
326 3. Prior to calling Start(), the Supported() function for the driver specified by This must\r
327 have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS. \r
328\r
329 @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
330 @param[in] ControllerHandle The handle of the controller to start. This handle \r
331 must support a protocol interface that supplies \r
332 an I/O abstraction to the driver.\r
333 @param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This \r
334 parameter is ignored by device drivers, and is optional for bus \r
335 drivers. For a bus driver, if this parameter is NULL, then handles \r
336 for all the children of Controller are created by this driver. \r
337 If this parameter is not NULL and the first Device Path Node is \r
338 not the End of Device Path Node, then only the handle for the \r
339 child device specified by the first Device Path Node of \r
340 RemainingDevicePath is created by this driver.\r
341 If the first Device Path Node of RemainingDevicePath is \r
342 the End of Device Path Node, no child handle is created by this\r
343 driver.\r
344\r
345 @retval EFI_SUCCESS The device was started.\r
346 @retval EFI_DEVICE_ERROR The device could not be started due to a device error.Currently not implemented.\r
347 @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
348 @retval Others The driver failded to start the device.\r
349\r
350**/\r
351EFI_STATUS\r
352EFIAPI\r
353AtaAtapiPassThruStart (\r
354 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
355 IN EFI_HANDLE Controller,\r
356 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
357 )\r
358{\r
359 EFI_STATUS Status;\r
360 EFI_IDE_CONTROLLER_INIT_PROTOCOL *IdeControllerInit;\r
361 ATA_ATAPI_PASS_THRU_INSTANCE *Instance;\r
362 EFI_PCI_IO_PROTOCOL *PciIo;\r
363 UINT64 Supports;\r
364 BOOLEAN PciAttributesSaved;\r
365 UINT64 OriginalPciAttributes;\r
366\r
367 Status = EFI_SUCCESS;\r
368 IdeControllerInit = NULL;\r
369 Instance = NULL;\r
370 PciAttributesSaved = FALSE;\r
371 OriginalPciAttributes = 0;\r
372\r
373 DEBUG ((EFI_D_INFO, "==AtaAtapiPassThru Start== Controller = %x\n", Controller));\r
374\r
375 Status = gBS->OpenProtocol (\r
376 Controller,\r
377 &gEfiIdeControllerInitProtocolGuid,\r
378 (VOID **) &IdeControllerInit,\r
379 This->DriverBindingHandle,\r
380 Controller,\r
381 EFI_OPEN_PROTOCOL_BY_DRIVER\r
382 );\r
383\r
384 if (EFI_ERROR (Status)) {\r
385 DEBUG ((EFI_D_ERROR, "Open Ide_Controller_Init Error, Status=%r", Status));\r
386 goto ErrorExit;\r
387 }\r
388\r
389 Status = gBS->OpenProtocol (\r
390 Controller,\r
391 &gEfiPciIoProtocolGuid,\r
392 (VOID **) &PciIo,\r
393 This->DriverBindingHandle,\r
394 Controller,\r
395 EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
396 );\r
397 if (EFI_ERROR (Status)) {\r
398 DEBUG ((EFI_D_ERROR, "Get Pci_Io Protocol Error, Status=%r", Status));\r
399 goto ErrorExit;\r
400 }\r
401\r
402 Status = PciIo->Attributes (\r
403 PciIo,\r
404 EfiPciIoAttributeOperationGet,\r
405 0,\r
406 &OriginalPciAttributes\r
407 );\r
408\r
409 if (EFI_ERROR (Status)) {\r
410 goto ErrorExit;\r
411 }\r
412 PciAttributesSaved = TRUE;\r
413\r
414 Status = PciIo->Attributes (\r
415 PciIo,\r
416 EfiPciIoAttributeOperationSupported,\r
417 0,\r
418 &Supports\r
419 );\r
420 if (!EFI_ERROR (Status)) {\r
421 Supports &= EFI_PCI_DEVICE_ENABLE;\r
422 Status = PciIo->Attributes (\r
423 PciIo,\r
424 EfiPciIoAttributeOperationEnable,\r
425 Supports,\r
426 NULL\r
427 );\r
428 }\r
429\r
430 if (EFI_ERROR (Status)) {\r
431 goto ErrorExit;\r
432 }\r
433\r
434 //\r
435 // Allocate a buffer to store the ATA_ATAPI_PASS_THRU_INSTANCE data structure\r
436 //\r
437 Instance = AllocateCopyPool (sizeof (ATA_ATAPI_PASS_THRU_INSTANCE), &gAtaAtapiPassThruInstanceTemplate);\r
438 if (Instance == NULL) {\r
439 goto ErrorExit;\r
440 }\r
441\r
442 Instance->ControllerHandle = Controller;\r
443 Instance->IdeControllerInit = IdeControllerInit;\r
444 Instance->PciIo = PciIo;\r
445 Instance->OriginalPciAttributes = OriginalPciAttributes;\r
446 Instance->AtaPassThru.Mode = &Instance->AtaPassThruMode;\r
447 Instance->ExtScsiPassThru.Mode = &Instance->ExtScsiPassThruMode;\r
448 InitializeListHead(&Instance->DeviceList);\r
449\r
450 //\r
451 // Enumerate all inserted ATA devices.\r
452 //\r
453 Status = EnumerateAttachedDevice (Instance);\r
454 if (EFI_ERROR (Status)) {\r
455 goto ErrorExit;\r
456 }\r
457\r
458 Status = gBS->InstallMultipleProtocolInterfaces (\r
459 &Controller,\r
460 &gEfiAtaPassThruProtocolGuid, &(Instance->AtaPassThru),\r
461 &gEfiExtScsiPassThruProtocolGuid, &(Instance->ExtScsiPassThru),\r
462 NULL\r
463 );\r
464 ASSERT_EFI_ERROR (Status);\r
465\r
466 return Status;\r
467\r
468ErrorExit:\r
469 if (IdeControllerInit != NULL) {\r
470 gBS->CloseProtocol (\r
471 Controller,\r
472 &gEfiIdeControllerInitProtocolGuid,\r
473 This->DriverBindingHandle,\r
474 Controller\r
475 );\r
476 }\r
477\r
478 //\r
479 // Remove all inserted ATA devices.\r
480 //\r
481 DestroyDeviceInfoList(Instance);\r
482\r
483 if (Instance != NULL) {\r
484 FreePool (Instance);\r
485 }\r
486 return EFI_UNSUPPORTED;\r
487}\r
488\r
489/**\r
490 Stops a device controller or a bus controller.\r
491 \r
492 The Stop() function is designed to be invoked from the EFI boot service DisconnectController(). \r
493 As a result, much of the error checking on the parameters to Stop() has been moved \r
494 into this common boot service. It is legal to call Stop() from other locations, \r
495 but the following calling restrictions must be followed, or the system behavior will not be deterministic.\r
496 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this\r
497 same driver's Start() function.\r
498 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid\r
499 EFI_HANDLE. In addition, all of these handles must have been created in this driver's\r
500 Start() function, and the Start() function must have called OpenProtocol() on\r
501 ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r
502 \r
503 @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
504 @param[in] ControllerHandle A handle to the device being stopped. The handle must \r
505 support a bus specific I/O protocol for the driver \r
506 to use to stop the device.\r
507 @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.\r
508 @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL \r
509 if NumberOfChildren is 0.\r
510\r
511 @retval EFI_SUCCESS The device was stopped.\r
512 @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r
513\r
514**/\r
515EFI_STATUS\r
516EFIAPI\r
517AtaAtapiPassThruStop (\r
518 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
519 IN EFI_HANDLE Controller,\r
520 IN UINTN NumberOfChildren,\r
521 IN EFI_HANDLE *ChildHandleBuffer\r
522 )\r
523{\r
524 EFI_STATUS Status;\r
525 ATA_ATAPI_PASS_THRU_INSTANCE *Instance;\r
526 EFI_ATA_PASS_THRU_PROTOCOL *AtaPassThru;\r
527 EFI_PCI_IO_PROTOCOL *PciIo;\r
528 EFI_AHCI_REGISTERS *AhciRegisters;\r
529 UINT64 Supports;\r
530\r
531 DEBUG ((EFI_D_INFO, "==AtaAtapiPassThru Stop== Controller = %x\n", Controller));\r
532\r
533 Status = gBS->OpenProtocol (\r
534 Controller,\r
535 &gEfiAtaPassThruProtocolGuid,\r
536 (VOID **) &AtaPassThru,\r
537 This->DriverBindingHandle,\r
538 Controller,\r
539 EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
540 );\r
541\r
542 if (EFI_ERROR (Status)) {\r
543 return EFI_DEVICE_ERROR;\r
544 }\r
545 \r
546 Instance = ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS(AtaPassThru);\r
547 PciIo = Instance->PciIo;\r
548\r
549 //\r
550 // Disable this ATA host controller.\r
551 //\r
552 Status = PciIo->Attributes (\r
553 PciIo,\r
554 EfiPciIoAttributeOperationSupported,\r
555 0,\r
556 &Supports\r
557 );\r
558 if (!EFI_ERROR (Status)) {\r
559 Supports &= EFI_PCI_DEVICE_ENABLE;\r
560 PciIo->Attributes (\r
561 PciIo,\r
562 EfiPciIoAttributeOperationDisable,\r
563 Supports,\r
564 NULL\r
565 );\r
566 }\r
567\r
568 //\r
569 // Restore original PCI attributes\r
570 //\r
571 Status = PciIo->Attributes (\r
572 PciIo,\r
573 EfiPciIoAttributeOperationSet,\r
574 Instance->OriginalPciAttributes,\r
575 NULL\r
576 );\r
577 ASSERT_EFI_ERROR (Status);\r
578\r
579 gBS->UninstallMultipleProtocolInterfaces (\r
580 Controller,\r
581 &gEfiAtaPassThruProtocolGuid, &(Instance->AtaPassThru),\r
582 &gEfiExtScsiPassThruProtocolGuid, &(Instance->ExtScsiPassThru),\r
583 NULL\r
584 );\r
585\r
586 //\r
587 // Close protocols opened by AtaAtapiPassThru controller driver\r
588 //\r
589 gBS->CloseProtocol (\r
590 Controller,\r
591 &gEfiIdeControllerInitProtocolGuid,\r
592 This->DriverBindingHandle,\r
593 Controller\r
594 );\r
595\r
596 //\r
597 // Free allocated resource\r
598 //\r
599 DestroyDeviceInfoList(Instance);\r
600\r
601 //\r
602 // If the current working mode is AHCI mode, then pre-allocated resource\r
603 // for AHCI initialization should be released.\r
604 //\r
605 if (Instance->Mode == EfiAtaAhciMode) {\r
606 AhciRegisters = &Instance->AhciRegisters;\r
607 PciIo->Unmap (\r
608 PciIo,\r
609 AhciRegisters->MapCommandTable\r
610 );\r
611 PciIo->FreeBuffer (\r
612 PciIo,\r
613 EFI_SIZE_TO_PAGES ((UINTN) AhciRegisters->MaxCommandTableSize),\r
614 AhciRegisters->AhciCommandTable\r
615 );\r
616 PciIo->Unmap (\r
617 PciIo,\r
618 AhciRegisters->MapCmdList\r
619 );\r
620 PciIo->FreeBuffer (\r
621 PciIo,\r
622 EFI_SIZE_TO_PAGES ((UINTN) AhciRegisters->MaxCommandListSize),\r
623 AhciRegisters->AhciCmdList\r
624 );\r
625 PciIo->Unmap (\r
626 PciIo,\r
627 AhciRegisters->MapRFis\r
628 );\r
629 PciIo->FreeBuffer (\r
630 PciIo,\r
631 EFI_SIZE_TO_PAGES ((UINTN) AhciRegisters->MaxReceiveFisSize),\r
632 AhciRegisters->AhciRFis\r
633 );\r
634 }\r
635 FreePool (Instance);\r
636\r
637 return Status;\r
638}\r
639\r
640/**\r
641 Traverse the attached ATA devices list to find out the device to access.\r
642 \r
643 @param[in] Instance A pointer to the ATA_ATAPI_PASS_THRU_INSTANCE instance.\r
644 @param[in] Port The port number of the ATA device to send the command. \r
645 @param[in] PortMultiplierPort The port multiplier port number of the ATA device to send the command.\r
646 If there is no port multiplier, then specify 0.\r
647 @param[in] DeviceType The device type of the ATA device.\r
648 \r
649 @retval The pointer to the data structure of the device info to access.\r
650\r
651**/\r
652LIST_ENTRY *\r
653EFIAPI\r
654SearchDeviceInfoList (\r
655 IN ATA_ATAPI_PASS_THRU_INSTANCE *Instance,\r
656 IN UINT16 Port,\r
657 IN UINT16 PortMultiplier,\r
658 IN EFI_ATA_DEVICE_TYPE DeviceType\r
659 )\r
660{\r
661 EFI_ATA_DEVICE_INFO *DeviceInfo;\r
662 LIST_ENTRY *Node;\r
663\r
664 Node = GetFirstNode (&Instance->DeviceList);\r
665 while (!IsNull (&Instance->DeviceList, Node)) {\r
666 DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);\r
667\r
668 if ((DeviceInfo->Type == DeviceType) &&\r
669 (Port == DeviceInfo->Port) && \r
670 (PortMultiplier == DeviceInfo->PortMultiplier)) {\r
671 return Node;\r
672 }\r
673\r
674 Node = GetNextNode (&Instance->DeviceList, Node);\r
675 } \r
676\r
677 return NULL;\r
678}\r
679\r
680/**\r
681 Allocate device info data structure to contain device info.\r
682 And insert the data structure to the tail of device list for tracing.\r
683 \r
684 @param[in] Instance A pointer to the ATA_ATAPI_PASS_THRU_INSTANCE instance.\r
685 @param[in] Port The port number of the ATA device to send the command. \r
686 @param[in] PortMultiplierPort The port multiplier port number of the ATA device to send the command.\r
687 If there is no port multiplier, then specify 0.\r
688 @param[in] DeviceType The device type of the ATA device.\r
689 @param[in] IdentifyData The data buffer to store the output of the IDENTIFY cmd.\r
690\r
691 @retval EFI_SUCCESS Successfully insert the ata device to the tail of device list.\r
692 @retval EFI_OUT_OF_RESOURCES Can not allocate enough resource for use.\r
693\r
694**/\r
695EFI_STATUS\r
696EFIAPI\r
697CreateNewDeviceInfo (\r
698 IN ATA_ATAPI_PASS_THRU_INSTANCE *Instance,\r
699 IN UINT16 Port,\r
700 IN UINT16 PortMultiplier,\r
701 IN EFI_ATA_DEVICE_TYPE DeviceType,\r
702 IN EFI_IDENTIFY_DATA *IdentifyData\r
703 )\r
704{\r
705 EFI_ATA_DEVICE_INFO *DeviceInfo;\r
706\r
707 DeviceInfo = AllocateZeroPool (sizeof (EFI_ATA_DEVICE_INFO));\r
708\r
709 if (DeviceInfo == NULL) {\r
710 return EFI_OUT_OF_RESOURCES;\r
711 }\r
712\r
713 DeviceInfo->Signature = ATA_ATAPI_DEVICE_SIGNATURE;\r
714 DeviceInfo->Port = Port;\r
715 DeviceInfo->PortMultiplier = PortMultiplier;\r
716 DeviceInfo->Type = DeviceType;\r
717\r
718 if (IdentifyData != NULL) {\r
719 DeviceInfo->IdentifyData = AllocateCopyPool (sizeof (EFI_IDENTIFY_DATA), IdentifyData);\r
720 if (DeviceInfo->IdentifyData == NULL) {\r
721 FreePool (DeviceInfo);\r
722 return EFI_OUT_OF_RESOURCES;\r
723 }\r
724 }\r
725\r
726 InsertTailList (&Instance->DeviceList, &DeviceInfo->Link);\r
727\r
728 return EFI_SUCCESS;\r
729}\r
730\r
731/**\r
732 Destroy all attached ATA devices info.\r
733 \r
734 @param[in] Instance A pointer to the ATA_ATAPI_PASS_THRU_INSTANCE instance.\r
735\r
736**/\r
737VOID\r
738EFIAPI\r
739DestroyDeviceInfoList (\r
740 IN ATA_ATAPI_PASS_THRU_INSTANCE *Instance\r
741 )\r
742{\r
743 EFI_ATA_DEVICE_INFO *DeviceInfo;\r
744 LIST_ENTRY *Node;\r
745\r
746 Node = GetFirstNode (&Instance->DeviceList);\r
747 while (!IsNull (&Instance->DeviceList, Node)) {\r
748 DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);\r
749\r
750 Node = GetNextNode (&Instance->DeviceList, Node);\r
751\r
752 RemoveEntryList (&DeviceInfo->Link);\r
753 if (DeviceInfo->IdentifyData != NULL) {\r
754 FreePool (DeviceInfo->IdentifyData);\r
755 }\r
756 FreePool (DeviceInfo);\r
757 }\r
758}\r
759\r
760/**\r
761 Enumerate all attached ATA devices at IDE mode or AHCI mode separately.\r
762 \r
763 The function is designed to enumerate all attached ATA devices. \r
764 \r
765 @param[in] Instance A pointer to the ATA_ATAPI_PASS_THRU_INSTANCE instance.\r
766\r
767 @retval EFI_SUCCESS Successfully enumerate attached ATA devices.\r
768 @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r
769\r
770**/\r
771EFI_STATUS\r
772EFIAPI\r
773EnumerateAttachedDevice (\r
774 IN ATA_ATAPI_PASS_THRU_INSTANCE *Instance\r
775 )\r
776{\r
777 EFI_STATUS Status;\r
778 PCI_TYPE00 PciData;\r
779 UINT8 ClassCode;\r
780\r
781 Status = EFI_SUCCESS;\r
782\r
783 Status = Instance->PciIo->Pci.Read (\r
784 Instance->PciIo,\r
785 EfiPciIoWidthUint8,\r
786 PCI_CLASSCODE_OFFSET,\r
787 sizeof (PciData.Hdr.ClassCode),\r
788 PciData.Hdr.ClassCode\r
789 );\r
790 ASSERT_EFI_ERROR (Status);\r
791\r
792 ClassCode = PciData.Hdr.ClassCode[1];\r
793\r
794 switch (ClassCode) {\r
795 case PCI_CLASS_MASS_STORAGE_IDE :\r
796 //\r
797 // The ATA controller is working at IDE mode\r
798 //\r
799 Instance->Mode = EfiAtaIdeMode;\r
800\r
801 Status = IdeModeInitialization (Instance);\r
802 if (EFI_ERROR (Status)) {\r
803 Status = EFI_DEVICE_ERROR;\r
804 goto Done;\r
805 }\r
806 break;\r
807 case PCI_CLASS_MASS_STORAGE_SATADPA :\r
808 //\r
809 // The ATA controller is working at AHCI mode\r
810 //\r
811 Instance->Mode = EfiAtaAhciMode;\r
812\r
813 Status = AhciModeInitialization (Instance);\r
814\r
815 if (EFI_ERROR (Status)) {\r
816 Status = EFI_DEVICE_ERROR;\r
817 goto Done;\r
818 }\r
819\r
820 break;\r
821 default :\r
822 Status = EFI_UNSUPPORTED;\r
823 }\r
824\r
825Done:\r
826 return Status;\r
827}\r
828\r
829/**\r
830 Sends an ATA command to an ATA device that is attached to the ATA controller. This function\r
831 supports both blocking I/O and non-blocking I/O. The blocking I/O functionality is required,\r
832 and the non-blocking I/O functionality is optional.\r
833\r
834 @param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance. \r
835 @param[in] Port The port number of the ATA device to send the command. \r
836 @param[in] PortMultiplierPort The port multiplier port number of the ATA device to send the command.\r
837 If there is no port multiplier, then specify 0.\r
838 @param[in, out] Packet A pointer to the ATA command to send to the ATA device specified by Port\r
839 and PortMultiplierPort.\r
840 @param[in] Event If non-blocking I/O is not supported then Event is ignored, and blocking\r
841 I/O is performed. If Event is NULL, then blocking I/O is performed. If\r
842 Event is not NULL and non blocking I/O is supported, then non-blocking\r
843 I/O is performed, and Event will be signaled when the ATA command completes.\r
844\r
845 @retval EFI_SUCCESS The ATA command was sent by the host. For bi-directional commands, \r
846 InTransferLength bytes were transferred from InDataBuffer. For write and\r
847 bi-directional commands, OutTransferLength bytes were transferred by OutDataBuffer.\r
848 @retval EFI_BAD_BUFFER_SIZE The ATA command was not executed. The number of bytes that could be transferred\r
849 is returned in InTransferLength. For write and bi-directional commands, \r
850 OutTransferLength bytes were transferred by OutDataBuffer.\r
851 @retval EFI_NOT_READY The ATA command could not be sent because there are too many ATA commands\r
852 already queued. The caller may retry again later.\r
853 @retval EFI_DEVICE_ERROR A device error occurred while attempting to send the ATA command.\r
854 @retval EFI_INVALID_PARAMETER Port, PortMultiplierPort, or the contents of Acb are invalid. The ATA\r
855 command was not sent, so no additional status information is available.\r
856\r
857**/\r
858EFI_STATUS\r
859EFIAPI\r
860AtaPassThruPassThru (\r
861 IN EFI_ATA_PASS_THRU_PROTOCOL *This,\r
862 IN UINT16 Port,\r
863 IN UINT16 PortMultiplierPort,\r
864 IN OUT EFI_ATA_PASS_THRU_COMMAND_PACKET *Packet,\r
865 IN EFI_EVENT Event OPTIONAL\r
866 ) \r
867{\r
868 EFI_STATUS Status;\r
869 ATA_ATAPI_PASS_THRU_INSTANCE *Instance;\r
870 EFI_ATA_PASS_THRU_CMD_PROTOCOL Protocol;\r
871 EFI_ATA_HC_WORK_MODE Mode;\r
872 LIST_ENTRY *Node;\r
873 EFI_ATA_DEVICE_INFO *DeviceInfo;\r
874 EFI_IDENTIFY_DATA *IdentifyData;\r
875 UINT64 Capacity;\r
876 UINT32 MaxSectorCount;\r
877\r
878 Instance = ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);\r
879\r
880 if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->InDataBuffer, This->Mode->IoAlign)) {\r
881 return EFI_INVALID_PARAMETER;\r
882 }\r
883\r
884 if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->OutDataBuffer, This->Mode->IoAlign)) {\r
885 return EFI_INVALID_PARAMETER;\r
886 }\r
887\r
888 if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->Asb, This->Mode->IoAlign)) {\r
889 return EFI_INVALID_PARAMETER;\r
890 }\r
891\r
892 //\r
893 // convert the transfer length from sector count to byte.\r
894 //\r
895 if (((Packet->Length & EFI_ATA_PASS_THRU_LENGTH_BYTES) == 0) && \r
896 (Packet->InTransferLength != 0)) {\r
897 Packet->InTransferLength = Packet->InTransferLength * 0x200;\r
898 }\r
899\r
900 //\r
901 // convert the transfer length from sector count to byte.\r
902 //\r
903 if (((Packet->Length & EFI_ATA_PASS_THRU_LENGTH_BYTES) == 0) &&\r
904 (Packet->OutTransferLength != 0)) {\r
905 Packet->OutTransferLength = Packet->OutTransferLength * 0x200;\r
906 }\r
907\r
908 Node = SearchDeviceInfoList (Instance, Port, PortMultiplierPort, EfiIdeHarddisk);\r
909\r
910 if (Node == NULL) {\r
911 return EFI_INVALID_PARAMETER;\r
912 }\r
913\r
914 //\r
915 // Check whether this device needs 48-bit addressing (ATAPI-6 ata device).\r
916 // Per ATA-6 spec, word83: bit15 is zero and bit14 is one.\r
917 // If bit10 is one, it means the ata device support 48-bit addressing. \r
918 //\r
919 DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);\r
920 IdentifyData = DeviceInfo->IdentifyData;\r
921 MaxSectorCount = 0x100;\r
922 if ((IdentifyData->AtaData.command_set_supported_83 & (BIT10 | BIT15 | BIT14)) == 0x4400) {\r
923 Capacity = *((UINT64 *)IdentifyData->AtaData.maximum_lba_for_48bit_addressing);\r
924 if (Capacity > 0xFFFFFFF) {\r
925 //\r
926 // Capacity exceeds 120GB. 48-bit addressing is really needed\r
927 // In this case, the max sector count is 0x10000\r
928 //\r
929 MaxSectorCount = 0x10000;\r
930 }\r
931 }\r
932\r
933 //\r
934 // If the data buffer described by InDataBuffer/OutDataBuffer and InTransferLength/OutTransferLength\r
935 // is too big to be transferred in a single command, then no data is transferred and EFI_BAD_BUFFER_SIZE\r
936 // is returned. \r
937 //\r
938 if (((Packet->InTransferLength != 0) && (Packet->InTransferLength > MaxSectorCount * 0x200)) || \r
939 ((Packet->OutTransferLength != 0) && (Packet->OutTransferLength > MaxSectorCount * 0x200))) {\r
940 return EFI_BAD_BUFFER_SIZE;\r
941 }\r
942\r
943 Status = EFI_UNSUPPORTED;\r
944 Protocol = Packet->Protocol;\r
945\r
946 Mode = Instance->Mode;\r
947 switch (Mode) {\r
948 case EfiAtaIdeMode:\r
949 //\r
950 // Reassign IDE mode io port registers' base addresses\r
951 //\r
952 Status = GetIdeRegisterIoAddr (Instance->PciIo, Instance->IdeRegisters);\r
953 \r
954 if (EFI_ERROR (Status)) {\r
955 return Status;\r
956 }\r
957 \r
958 switch (Protocol) {\r
959 case EFI_ATA_PASS_THRU_PROTOCOL_ATA_NON_DATA:\r
960 Status = AtaNonDataCommandIn(\r
961 Instance->PciIo,\r
962 &Instance->IdeRegisters[Port],\r
963 Packet->Acb,\r
964 Packet->Asb,\r
965 Packet->Timeout\r
966 );\r
967 break;\r
968 case EFI_ATA_PASS_THRU_PROTOCOL_PIO_DATA_IN:\r
969 Status = AtaPioDataInOut(\r
970 Instance->PciIo,\r
971 &Instance->IdeRegisters[Port],\r
972 Packet->InDataBuffer,\r
973 Packet->InTransferLength,\r
974 TRUE,\r
975 Packet->Acb,\r
976 Packet->Asb,\r
977 Packet->Timeout\r
978 );\r
979 break;\r
980 case EFI_ATA_PASS_THRU_PROTOCOL_PIO_DATA_OUT:\r
981 Status = AtaPioDataInOut(\r
982 Instance->PciIo,\r
983 &Instance->IdeRegisters[Port],\r
984 Packet->OutDataBuffer,\r
985 Packet->OutTransferLength,\r
986 FALSE,\r
987 Packet->Acb,\r
988 Packet->Asb,\r
989 Packet->Timeout\r
990 );\r
991 break;\r
992 case EFI_ATA_PASS_THRU_PROTOCOL_UDMA_DATA_IN:\r
993 Status = AtaUdmaInOut(\r
994 Instance->PciIo,\r
995 &Instance->IdeRegisters[Port],\r
996 TRUE,\r
997 Packet->InDataBuffer,\r
998 Packet->InTransferLength,\r
999 Packet->Acb,\r
1000 Packet->Asb,\r
1001 Packet->Timeout\r
1002 );\r
1003 break;\r
1004 case EFI_ATA_PASS_THRU_PROTOCOL_UDMA_DATA_OUT:\r
1005 Status = AtaUdmaInOut(\r
1006 Instance->PciIo,\r
1007 &Instance->IdeRegisters[Port],\r
1008 FALSE,\r
1009 Packet->OutDataBuffer,\r
1010 Packet->OutTransferLength,\r
1011 Packet->Acb,\r
1012 Packet->Asb,\r
1013 Packet->Timeout\r
1014 );\r
1015 break;\r
1016 default :\r
1017 return EFI_UNSUPPORTED;\r
1018 }\r
1019 break;\r
1020 case EfiAtaAhciMode :\r
1021 switch (Protocol) {\r
1022 case EFI_ATA_PASS_THRU_PROTOCOL_ATA_NON_DATA:\r
1023 Status = AhciNonDataTransfer(\r
1024 Instance->PciIo,\r
1025 &Instance->AhciRegisters,\r
1026 (UINT8)Port,\r
1027 (UINT8)PortMultiplierPort,\r
1028 NULL,\r
1029 0,\r
1030 Packet->Acb,\r
1031 Packet->Asb,\r
1032 Packet->Timeout\r
1033 );\r
1034 break;\r
1035 case EFI_ATA_PASS_THRU_PROTOCOL_PIO_DATA_IN:\r
1036 Status = AhciPioTransfer(\r
1037 Instance->PciIo,\r
1038 &Instance->AhciRegisters,\r
1039 (UINT8)Port,\r
1040 (UINT8)PortMultiplierPort,\r
1041 NULL,\r
1042 0,\r
1043 TRUE,\r
1044 Packet->Acb,\r
1045 Packet->Asb,\r
1046 Packet->InDataBuffer,\r
1047 Packet->InTransferLength,\r
1048 Packet->Timeout\r
1049 );\r
1050 break;\r
1051 case EFI_ATA_PASS_THRU_PROTOCOL_PIO_DATA_OUT:\r
1052 Status = AhciPioTransfer(\r
1053 Instance->PciIo,\r
1054 &Instance->AhciRegisters,\r
1055 (UINT8)Port,\r
1056 (UINT8)PortMultiplierPort,\r
1057 NULL,\r
1058 0,\r
1059 FALSE,\r
1060 Packet->Acb,\r
1061 Packet->Asb,\r
1062 Packet->OutDataBuffer,\r
1063 Packet->OutTransferLength,\r
1064 Packet->Timeout\r
1065 );\r
1066 break;\r
1067 case EFI_ATA_PASS_THRU_PROTOCOL_UDMA_DATA_IN:\r
1068 Status = AhciDmaTransfer(\r
1069 Instance->PciIo,\r
1070 &Instance->AhciRegisters,\r
1071 (UINT8)Port,\r
1072 (UINT8)PortMultiplierPort,\r
1073 NULL,\r
1074 0,\r
1075 TRUE,\r
1076 Packet->Acb,\r
1077 Packet->Asb,\r
1078 Packet->InDataBuffer,\r
1079 Packet->InTransferLength,\r
1080 Packet->Timeout\r
1081 );\r
1082 break;\r
1083 case EFI_ATA_PASS_THRU_PROTOCOL_UDMA_DATA_OUT:\r
1084 Status = AhciDmaTransfer(\r
1085 Instance->PciIo,\r
1086 &Instance->AhciRegisters,\r
1087 (UINT8)Port,\r
1088 (UINT8)PortMultiplierPort,\r
1089 NULL,\r
1090 0,\r
1091 FALSE,\r
1092 Packet->Acb,\r
1093 Packet->Asb,\r
1094 Packet->OutDataBuffer,\r
1095 Packet->OutTransferLength,\r
1096 Packet->Timeout\r
1097 );\r
1098 break;\r
1099 default :\r
1100 return EFI_UNSUPPORTED;\r
1101 }\r
1102 break;\r
1103\r
1104 default:\r
1105 Status = EFI_DEVICE_ERROR;\r
1106 break;\r
1107 }\r
1108\r
1109 return Status;\r
1110}\r
1111\r
1112/**\r
1113 Used to retrieve the list of legal port numbers for ATA devices on an ATA controller.\r
1114 These can either be the list of ports where ATA devices are actually present or the\r
1115 list of legal port numbers for the ATA controller. Regardless, the caller of this\r
1116 function must probe the port number returned to see if an ATA device is actually\r
1117 present at that location on the ATA controller.\r
1118\r
1119 The GetNextPort() function retrieves the port number on an ATA controller. If on input\r
1120 Port is 0xFFFF, then the port number of the first port on the ATA controller is returned\r
1121 in Port and EFI_SUCCESS is returned.\r
1122\r
1123 If Port is a port number that was returned on a previous call to GetNextPort(), then the\r
1124 port number of the next port on the ATA controller is returned in Port, and EFI_SUCCESS\r
1125 is returned. If Port is not 0xFFFF and Port was not returned on a previous call to\r
1126 GetNextPort(), then EFI_INVALID_PARAMETER is returned.\r
1127\r
1128 If Port is the port number of the last port on the ATA controller, then EFI_NOT_FOUND is\r
1129 returned.\r
1130\r
1131 @param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance. \r
1132 @param[in, out] Port On input, a pointer to the port number on the ATA controller.\r
1133 On output, a pointer to the next port number on the ATA\r
1134 controller. An input value of 0xFFFF retrieves the first port\r
1135 number on the ATA controller.\r
1136\r
1137 @retval EFI_SUCCESS The next port number on the ATA controller was returned in Port.\r
1138 @retval EFI_NOT_FOUND There are no more ports on this ATA controller.\r
1139 @retval EFI_INVALID_PARAMETER Port is not 0xFFFF and Port was not returned on a previous call\r
1140 to GetNextPort().\r
1141\r
1142**/\r
1143EFI_STATUS\r
1144EFIAPI\r
1145AtaPassThruGetNextPort (\r
1146 IN EFI_ATA_PASS_THRU_PROTOCOL *This,\r
1147 IN OUT UINT16 *Port\r
1148 )\r
1149{\r
1150 ATA_ATAPI_PASS_THRU_INSTANCE *Instance;\r
1151 LIST_ENTRY *Node;\r
1152 EFI_ATA_DEVICE_INFO *DeviceInfo;\r
1153\r
1154 Instance = ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);\r
1155\r
1156 if (Port == NULL) {\r
1157 return EFI_INVALID_PARAMETER;\r
1158 }\r
1159\r
1160 if (*Port == 0xFFFF) {\r
1161 //\r
1162 // If the Port is all 0xFF's, start to traverse the device list from the beginning\r
1163 //\r
1164 Node = GetFirstNode (&Instance->DeviceList);\r
1165\r
1166 while (!IsNull (&Instance->DeviceList, Node)) {\r
1167 DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);\r
1168\r
1169 if (DeviceInfo->Type == EfiIdeHarddisk) {\r
1170 *Port = DeviceInfo->Port;\r
1171 goto Exit;\r
1172 }\r
1173\r
1174 Node = GetNextNode (&Instance->DeviceList, Node);\r
1175 }\r
1176\r
1177 return EFI_NOT_FOUND;\r
1178 } else if (*Port == Instance->PreviousPort) {\r
1179 Node = GetFirstNode (&Instance->DeviceList);\r
1180\r
1181 while (!IsNull (&Instance->DeviceList, Node)) {\r
1182 DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);\r
1183\r
1184 if ((DeviceInfo->Type == EfiIdeHarddisk) &&\r
1185 (DeviceInfo->Port > *Port)){\r
1186 *Port = DeviceInfo->Port;\r
1187 goto Exit;\r
1188 }\r
1189\r
1190 Node = GetNextNode (&Instance->DeviceList, Node);\r
1191 }\r
1192\r
1193 return EFI_NOT_FOUND;\r
1194 } else {\r
1195 //\r
1196 // Port is not equal to 0xFFFF and also not equal to previous return value\r
1197 //\r
1198 return EFI_INVALID_PARAMETER;\r
1199 }\r
1200 \r
1201Exit:\r
1202 //\r
1203 // Update the PreviousPort and PreviousPortMultiplier.\r
1204 //\r
1205 Instance->PreviousPort = *Port;\r
1206\r
1207 return EFI_SUCCESS;\r
1208}\r
1209\r
1210/**\r
1211 Used to retrieve the list of legal port multiplier port numbers for ATA devices on a port of an ATA \r
1212 controller. These can either be the list of port multiplier ports where ATA devices are actually \r
1213 present on port or the list of legal port multiplier ports on that port. Regardless, the caller of this \r
1214 function must probe the port number and port multiplier port number returned to see if an ATA \r
1215 device is actually present.\r
1216\r
1217 The GetNextDevice() function retrieves the port multiplier port number of an ATA device \r
1218 present on a port of an ATA controller.\r
1219 \r
1220 If PortMultiplierPort points to a port multiplier port number value that was returned on a \r
1221 previous call to GetNextDevice(), then the port multiplier port number of the next ATA device\r
1222 on the port of the ATA controller is returned in PortMultiplierPort, and EFI_SUCCESS is\r
1223 returned.\r
1224 \r
1225 If PortMultiplierPort points to 0xFFFF, then the port multiplier port number of the first \r
1226 ATA device on port of the ATA controller is returned in PortMultiplierPort and \r
1227 EFI_SUCCESS is returned.\r
1228 \r
1229 If PortMultiplierPort is not 0xFFFF and the value pointed to by PortMultiplierPort\r
1230 was not returned on a previous call to GetNextDevice(), then EFI_INVALID_PARAMETER\r
1231 is returned.\r
1232 \r
1233 If PortMultiplierPort is the port multiplier port number of the last ATA device on the port of \r
1234 the ATA controller, then EFI_NOT_FOUND is returned.\r
1235\r
1236 @param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance.\r
1237 @param[in] Port The port number present on the ATA controller.\r
1238 @param[in, out] PortMultiplierPort On input, a pointer to the port multiplier port number of an\r
1239 ATA device present on the ATA controller. \r
1240 If on input a PortMultiplierPort of 0xFFFF is specified, \r
1241 then the port multiplier port number of the first ATA device\r
1242 is returned. On output, a pointer to the port multiplier port\r
1243 number of the next ATA device present on an ATA controller.\r
1244\r
1245 @retval EFI_SUCCESS The port multiplier port number of the next ATA device on the port\r
1246 of the ATA controller was returned in PortMultiplierPort.\r
1247 @retval EFI_NOT_FOUND There are no more ATA devices on this port of the ATA controller.\r
1248 @retval EFI_INVALID_PARAMETER PortMultiplierPort is not 0xFFFF, and PortMultiplierPort was not\r
1249 returned on a previous call to GetNextDevice().\r
1250\r
1251**/\r
1252EFI_STATUS\r
1253EFIAPI\r
1254AtaPassThruGetNextDevice (\r
1255 IN EFI_ATA_PASS_THRU_PROTOCOL *This,\r
1256 IN UINT16 Port,\r
1257 IN OUT UINT16 *PortMultiplierPort\r
1258 )\r
1259{\r
1260 ATA_ATAPI_PASS_THRU_INSTANCE *Instance;\r
1261 LIST_ENTRY *Node;\r
1262 EFI_ATA_DEVICE_INFO *DeviceInfo;\r
1263\r
1264 Instance = ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);\r
1265\r
1266 if (PortMultiplierPort == NULL) {\r
1267 return EFI_INVALID_PARAMETER;\r
1268 }\r
1269\r
1270 if (*PortMultiplierPort == 0xFFFF) {\r
1271 //\r
1272 // If the PortMultiplierPort is all 0xFF's, start to traverse the device list from the beginning\r
1273 //\r
1274 Node = GetFirstNode (&Instance->DeviceList);\r
1275\r
1276 while (!IsNull (&Instance->DeviceList, Node)) {\r
1277 DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);\r
1278\r
1279 if ((DeviceInfo->Type == EfiIdeHarddisk) &&\r
1280 (DeviceInfo->Port == Port)){\r
1281 *PortMultiplierPort = DeviceInfo->PortMultiplier;\r
1282 goto Exit;\r
1283 }\r
1284\r
1285 Node = GetNextNode (&Instance->DeviceList, Node);\r
1286 }\r
1287\r
1288 return EFI_NOT_FOUND;\r
1289 } else if (*PortMultiplierPort == Instance->PreviousPortMultiplier) {\r
1290 Node = GetFirstNode (&Instance->DeviceList);\r
1291\r
1292 while (!IsNull (&Instance->DeviceList, Node)) {\r
1293 DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);\r
1294\r
1295 if ((DeviceInfo->Type == EfiIdeHarddisk) &&\r
1296 (DeviceInfo->Port == Port) &&\r
1297 (DeviceInfo->PortMultiplier > *PortMultiplierPort)){\r
1298 *PortMultiplierPort = DeviceInfo->PortMultiplier;\r
1299 goto Exit;\r
1300 }\r
1301\r
1302 Node = GetNextNode (&Instance->DeviceList, Node);\r
1303 }\r
1304\r
1305 return EFI_NOT_FOUND;\r
1306 } else {\r
1307 //\r
1308 // PortMultiplierPort is not equal to 0xFFFF and also not equal to previous return value\r
1309 //\r
1310 return EFI_INVALID_PARAMETER;\r
1311 }\r
1312 \r
1313Exit:\r
1314 //\r
1315 // Update the PreviousPort and PreviousPortMultiplier.\r
1316 //\r
1317 Instance->PreviousPortMultiplier = *PortMultiplierPort;\r
1318\r
1319 return EFI_SUCCESS;\r
1320}\r
1321\r
1322/**\r
1323 Used to allocate and build a device path node for an ATA device on an ATA controller.\r
1324\r
1325 The BuildDevicePath() function allocates and builds a single device node for the ATA\r
1326 device specified by Port and PortMultiplierPort. If the ATA device specified by Port and\r
1327 PortMultiplierPort is not present on the ATA controller, then EFI_NOT_FOUND is returned.\r
1328 If DevicePath is NULL, then EFI_INVALID_PARAMETER is returned. If there are not enough\r
1329 resources to allocate the device path node, then EFI_OUT_OF_RESOURCES is returned.\r
1330\r
1331 Otherwise, DevicePath is allocated with the boot service AllocatePool(), the contents of\r
1332 DevicePath are initialized to describe the ATA device specified by Port and PortMultiplierPort,\r
1333 and EFI_SUCCESS is returned.\r
1334\r
1335 @param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance.\r
1336 @param[in] Port Port specifies the port number of the ATA device for which a\r
1337 device path node is to be allocated and built.\r
1338 @param[in] PortMultiplierPort The port multiplier port number of the ATA device for which a\r
1339 device path node is to be allocated and built. If there is no\r
1340 port multiplier, then specify 0.\r
1341 @param[in, out] DevicePath A pointer to a single device path node that describes the ATA\r
1342 device specified by Port and PortMultiplierPort. This function\r
1343 is responsible for allocating the buffer DevicePath with the\r
1344 boot service AllocatePool(). It is the caller's responsibility\r
1345 to free DevicePath when the caller is finished with DevicePath.\r
1346 @retval EFI_SUCCESS The device path node that describes the ATA device specified by\r
1347 Port and PortMultiplierPort was allocated and returned in DevicePath.\r
1348 @retval EFI_NOT_FOUND The ATA device specified by Port and PortMultiplierPort does not\r
1349 exist on the ATA controller.\r
1350 @retval EFI_INVALID_PARAMETER DevicePath is NULL.\r
1351 @retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate DevicePath.\r
1352\r
1353**/\r
1354EFI_STATUS\r
1355EFIAPI\r
1356AtaPassThruBuildDevicePath (\r
1357 IN EFI_ATA_PASS_THRU_PROTOCOL *This,\r
1358 IN UINT16 Port,\r
1359 IN UINT16 PortMultiplierPort,\r
1360 IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath\r
1361 )\r
1362{\r
1363 EFI_DEV_PATH *DevicePathNode;\r
1364 ATA_ATAPI_PASS_THRU_INSTANCE *Instance;\r
1365 LIST_ENTRY *Node;\r
1366\r
1367 Instance = ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);\r
1368\r
1369 //\r
1370 // Validate parameters passed in.\r
1371 //\r
1372 if (DevicePath == NULL) {\r
1373 return EFI_INVALID_PARAMETER;\r
1374 }\r
1375\r
1376 Node = SearchDeviceInfoList(Instance, Port, PortMultiplierPort, EfiIdeHarddisk);\r
1377 if (Node == NULL) {\r
1378 return EFI_NOT_FOUND;\r
1379 }\r
1380 \r
1381 if (Instance->Mode == EfiAtaIdeMode) {\r
1382 DevicePathNode = AllocateCopyPool (sizeof (ATAPI_DEVICE_PATH), &mAtapiDevicePathTemplate);\r
1383 if (DevicePathNode == NULL) {\r
1384 return EFI_OUT_OF_RESOURCES;\r
1385 }\r
1386 DevicePathNode->Atapi.PrimarySecondary = (UINT8) Port;\r
1387 DevicePathNode->Atapi.SlaveMaster = (UINT8) PortMultiplierPort;\r
1388 DevicePathNode->Atapi.Lun = 0;\r
1389 } else {\r
1390 DevicePathNode = AllocateCopyPool (sizeof (SATA_DEVICE_PATH), &mSataDevicePathTemplate);\r
1391 if (DevicePathNode == NULL) {\r
1392 return EFI_OUT_OF_RESOURCES;\r
1393 }\r
1394\r
1395 DevicePathNode->Sata.HBAPortNumber = Port;\r
1396 DevicePathNode->Sata.PortMultiplierPortNumber = PortMultiplierPort;\r
1397 DevicePathNode->Sata.Lun = 0;\r
1398 }\r
1399\r
1400 *DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) DevicePathNode;\r
1401\r
1402 return EFI_SUCCESS;\r
1403}\r
1404\r
1405/**\r
1406 Used to translate a device path node to a port number and port multiplier port number.\r
1407\r
1408 The GetDevice() function determines the port and port multiplier port number associated with\r
1409 the ATA device described by DevicePath. If DevicePath is a device path node type that the\r
1410 ATA Pass Thru driver supports, then the ATA Pass Thru driver will attempt to translate the contents \r
1411 DevicePath into a port number and port multiplier port number.\r
1412\r
1413 If this translation is successful, then that port number and port multiplier port number are returned\r
1414 in Port and PortMultiplierPort, and EFI_SUCCESS is returned.\r
1415\r
1416 If DevicePath, Port, or PortMultiplierPort are NULL, then EFI_INVALID_PARAMETER is returned.\r
1417\r
1418 If DevicePath is not a device path node type that the ATA Pass Thru driver supports, then \r
1419 EFI_UNSUPPORTED is returned.\r
1420\r
1421 If DevicePath is a device path node type that the ATA Pass Thru driver supports, but there is not \r
1422 a valid translation from DevicePath to a port number and port multiplier port number, then \r
1423 EFI_NOT_FOUND is returned.\r
1424\r
1425 @param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance.\r
1426 @param[in] DevicePath A pointer to the device path node that describes an ATA device on the\r
1427 ATA controller.\r
1428 @param[out] Port On return, points to the port number of an ATA device on the ATA controller.\r
1429 @param[out] PortMultiplierPort On return, points to the port multiplier port number of an ATA device\r
1430 on the ATA controller.\r
1431\r
1432 @retval EFI_SUCCESS DevicePath was successfully translated to a port number and port multiplier\r
1433 port number, and they were returned in Port and PortMultiplierPort.\r
1434 @retval EFI_INVALID_PARAMETER DevicePath is NULL.\r
1435 @retval EFI_INVALID_PARAMETER Port is NULL.\r
1436 @retval EFI_INVALID_PARAMETER PortMultiplierPort is NULL.\r
1437 @retval EFI_UNSUPPORTED This driver does not support the device path node type in DevicePath.\r
1438 @retval EFI_NOT_FOUND A valid translation from DevicePath to a port number and port multiplier\r
1439 port number does not exist.\r
1440**/\r
1441EFI_STATUS\r
1442EFIAPI\r
1443AtaPassThruGetDevice (\r
1444 IN EFI_ATA_PASS_THRU_PROTOCOL *This,\r
1445 IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,\r
1446 OUT UINT16 *Port,\r
1447 OUT UINT16 *PortMultiplierPort\r
1448 )\r
1449{\r
1450 EFI_DEV_PATH *DevicePathNode;\r
1451 ATA_ATAPI_PASS_THRU_INSTANCE *Instance;\r
1452 LIST_ENTRY *Node;\r
1453\r
1454 Instance = ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);\r
1455\r
1456 //\r
1457 // Validate parameters passed in.\r
1458 //\r
1459 if (DevicePath == NULL || Port == NULL || PortMultiplierPort == NULL) {\r
1460 return EFI_INVALID_PARAMETER;\r
1461 }\r
1462\r
1463 //\r
1464 // Check whether the DevicePath belongs to SCSI_DEVICE_PATH or ATAPI_DEVICE_PATH\r
1465 //\r
1466 if ((DevicePath->Type != MESSAGING_DEVICE_PATH) ||\r
1467 ((DevicePath->SubType != MSG_SATA_DP) &&\r
1468 (DevicePath->SubType != MSG_ATAPI_DP)) ||\r
1469 ((DevicePathNodeLength(DevicePath) != sizeof(ATAPI_DEVICE_PATH)) &&\r
1470 (DevicePathNodeLength(DevicePath) != sizeof(SATA_DEVICE_PATH)))) {\r
1471 return EFI_UNSUPPORTED;\r
1472 }\r
1473\r
1474 DevicePathNode = (EFI_DEV_PATH *) DevicePath;\r
1475\r
1476 if (Instance->Mode == EfiAtaIdeMode) {\r
1477 *Port = DevicePathNode->Atapi.PrimarySecondary;\r
1478 *PortMultiplierPort = DevicePathNode->Atapi.SlaveMaster;\r
1479 } else {\r
1480 *Port = DevicePathNode->Sata.HBAPortNumber;\r
1481 *PortMultiplierPort = DevicePathNode->Sata.PortMultiplierPortNumber;\r
1482 }\r
1483\r
1484 Node = SearchDeviceInfoList(Instance, *Port, *PortMultiplierPort, EfiIdeHarddisk);\r
1485\r
1486 if (Node == NULL) {\r
1487 return EFI_NOT_FOUND;\r
1488 }\r
1489\r
1490 return EFI_SUCCESS;\r
1491}\r
1492\r
1493/**\r
1494 Resets a specific port on the ATA controller. This operation also resets all the ATA devices\r
1495 connected to the port.\r
1496\r
1497 The ResetChannel() function resets an a specific port on an ATA controller. This operation\r
1498 resets all the ATA devices connected to that port. If this ATA controller does not support\r
1499 a reset port operation, then EFI_UNSUPPORTED is returned.\r
1500\r
1501 If a device error occurs while executing that port reset operation, then EFI_DEVICE_ERROR is\r
1502 returned.\r
1503\r
1504 If a timeout occurs during the execution of the port reset operation, then EFI_TIMEOUT is returned.\r
1505\r
1506 If the port reset operation is completed, then EFI_SUCCESS is returned.\r
1507\r
1508 @param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance.\r
1509 @param[in] Port The port number on the ATA controller.\r
1510\r
1511 @retval EFI_SUCCESS The ATA controller port was reset.\r
1512 @retval EFI_UNSUPPORTED The ATA controller does not support a port reset operation.\r
1513 @retval EFI_DEVICE_ERROR A device error occurred while attempting to reset the ATA port.\r
1514 @retval EFI_TIMEOUT A timeout occurred while attempting to reset the ATA port.\r
1515\r
1516**/\r
1517EFI_STATUS\r
1518EFIAPI\r
1519AtaPassThruResetPort (\r
1520 IN EFI_ATA_PASS_THRU_PROTOCOL *This,\r
1521 IN UINT16 Port\r
1522 )\r
1523{\r
1524 return EFI_UNSUPPORTED;\r
1525}\r
1526\r
1527/**\r
1528 Resets an ATA device that is connected to an ATA controller.\r
1529\r
1530 The ResetDevice() function resets the ATA device specified by Port and PortMultiplierPort.\r
1531 If this ATA controller does not support a device reset operation, then EFI_UNSUPPORTED is\r
1532 returned.\r
1533\r
1534 If Port or PortMultiplierPort are not in a valid range for this ATA controller, then \r
1535 EFI_INVALID_PARAMETER is returned.\r
1536\r
1537 If a device error occurs while executing that device reset operation, then EFI_DEVICE_ERROR\r
1538 is returned.\r
1539\r
1540 If a timeout occurs during the execution of the device reset operation, then EFI_TIMEOUT is\r
1541 returned.\r
1542\r
1543 If the device reset operation is completed, then EFI_SUCCESS is returned.\r
1544\r
1545 @param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance.\r
1546 @param[in] Port Port represents the port number of the ATA device to be reset.\r
1547 @param[in] PortMultiplierPort The port multiplier port number of the ATA device to reset.\r
1548 If there is no port multiplier, then specify 0.\r
1549 @retval EFI_SUCCESS The ATA device specified by Port and PortMultiplierPort was reset.\r
1550 @retval EFI_UNSUPPORTED The ATA controller does not support a device reset operation.\r
1551 @retval EFI_INVALID_PARAMETER Port or PortMultiplierPort are invalid.\r
1552 @retval EFI_DEVICE_ERROR A device error occurred while attempting to reset the ATA device\r
1553 specified by Port and PortMultiplierPort.\r
1554 @retval EFI_TIMEOUT A timeout occurred while attempting to reset the ATA device\r
1555 specified by Port and PortMultiplierPort.\r
1556\r
1557**/\r
1558EFI_STATUS\r
1559EFIAPI\r
1560AtaPassThruResetDevice (\r
1561 IN EFI_ATA_PASS_THRU_PROTOCOL *This,\r
1562 IN UINT16 Port,\r
1563 IN UINT16 PortMultiplierPort\r
1564 )\r
1565{\r
1566 return EFI_UNSUPPORTED;\r
1567}\r
1568\r
1569/**\r
1570 Sends a SCSI Request Packet to a SCSI device that is attached to the SCSI channel. This function \r
1571 supports both blocking I/O and nonblocking I/O. The blocking I/O functionality is required, and the\r
1572 nonblocking I/O functionality is optional. \r
1573\r
1574 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
1575 @param Target The Target is an array of size TARGET_MAX_BYTES and it represents\r
1576 the id of the SCSI device to send the SCSI Request Packet. Each\r
1577 transport driver may choose to utilize a subset of this size to suit the needs\r
1578 of transport target representation. For example, a Fibre Channel driver\r
1579 may use only 8 bytes (WWN) to represent an FC target.\r
1580 @param Lun The LUN of the SCSI device to send the SCSI Request Packet.\r
1581 @param Packet A pointer to the SCSI Request Packet to send to the SCSI device\r
1582 specified by Target and Lun.\r
1583 @param Event If nonblocking I/O is not supported then Event is ignored, and blocking\r
1584 I/O is performed. If Event is NULL, then blocking I/O is performed. If\r
1585 Event is not NULL and non blocking I/O is supported, then\r
1586 nonblocking I/O is performed, and Event will be signaled when the\r
1587 SCSI Request Packet completes.\r
1588\r
1589 @retval EFI_SUCCESS The SCSI Request Packet was sent by the host. For bi-directional\r
1590 commands, InTransferLength bytes were transferred from\r
1591 InDataBuffer. For write and bi-directional commands,\r
1592 OutTransferLength bytes were transferred by\r
1593 OutDataBuffer.\r
1594 @retval EFI_BAD_BUFFER_SIZE The SCSI Request Packet was not executed. The number of bytes that\r
1595 could be transferred is returned in InTransferLength. For write\r
1596 and bi-directional commands, OutTransferLength bytes were\r
1597 transferred by OutDataBuffer.\r
1598 @retval EFI_NOT_READY The SCSI Request Packet could not be sent because there are too many\r
1599 SCSI Request Packets already queued. The caller may retry again later.\r
1600 @retval EFI_DEVICE_ERROR A device error occurred while attempting to send the SCSI Request\r
1601 Packet.\r
1602 @retval EFI_INVALID_PARAMETER Target, Lun, or the contents of ScsiRequestPacket are invalid.\r
1603 @retval EFI_UNSUPPORTED The command described by the SCSI Request Packet is not supported\r
1604 by the host adapter. This includes the case of Bi-directional SCSI\r
1605 commands not supported by the implementation. The SCSI Request\r
1606 Packet was not sent, so no additional status information is available.\r
1607 @retval EFI_TIMEOUT A timeout occurred while waiting for the SCSI Request Packet to execute.\r
1608\r
1609**/\r
1610EFI_STATUS\r
1611EFIAPI\r
1612ExtScsiPassThruPassThru (\r
1613 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r
1614 IN UINT8 *Target,\r
1615 IN UINT64 Lun,\r
1616 IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet,\r
1617 IN EFI_EVENT Event OPTIONAL\r
1618 )\r
1619{\r
1620 EFI_STATUS Status;\r
1621 ATA_ATAPI_PASS_THRU_INSTANCE *Instance;\r
1622 UINT8 Port;\r
1623 UINT8 PortMultiplier;\r
1624 EFI_ATA_HC_WORK_MODE Mode;\r
1625 LIST_ENTRY *Node;\r
1626 EFI_ATA_DEVICE_INFO *DeviceInfo;\r
1627\r
1628 Instance = EXT_SCSI_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);\r
1629\r
1630 if ((Packet == NULL) || (Packet->Cdb == NULL)) {\r
1631 return EFI_INVALID_PARAMETER;\r
1632 }\r
1633\r
1634 //\r
1635 // Don't support variable length CDB\r
1636 //\r
1637 if ((Packet->CdbLength != 6) && (Packet->CdbLength != 10) &&\r
1638 (Packet->CdbLength != 12) && (Packet->CdbLength != 16)) {\r
1639 return EFI_INVALID_PARAMETER;\r
1640 }\r
1641 \r
1642 if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->InDataBuffer, This->Mode->IoAlign)) {\r
1643 return EFI_INVALID_PARAMETER;\r
1644 }\r
1645\r
1646 if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->OutDataBuffer, This->Mode->IoAlign)) {\r
1647 return EFI_INVALID_PARAMETER;\r
1648 }\r
1649\r
1650 if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->SenseData, This->Mode->IoAlign)) {\r
1651 return EFI_INVALID_PARAMETER;\r
1652 }\r
1653\r
1654 //\r
1655 // For ATAPI device, doesn't support multiple LUN device.\r
1656 //\r
1657 if (Lun != 0) {\r
1658 return EFI_INVALID_PARAMETER;\r
1659 }\r
1660\r
1661 // \r
1662 // The layout of Target array:\r
1663 // ________________________________________________________________________\r
1664 // | Byte 0 | Byte 1 | ... | TARGET_MAX_BYTES - 1 |\r
1665 // |_____________________|_____________________|_____|______________________|\r
1666 // | | The port multiplier | | |\r
1667 // | The port number | port number | N/A | N/A |\r
1668 // |_____________________|_____________________|_____|______________________|\r
1669 //\r
1670 // For ATAPI device, 2 bytes is enough to represent the location of SCSI device.\r
1671 //\r
1672 Port = Target[0];\r
1673 PortMultiplier = Target[1];\r
1674\r
1675 Node = SearchDeviceInfoList(Instance, Port, PortMultiplier, EfiIdeCdrom);\r
1676 if (Node == NULL) {\r
1677 return EFI_INVALID_PARAMETER;\r
1678 }\r
1679\r
1680 DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);\r
1681\r
1682 //\r
1683 // ATA_CMD_IDENTIFY_DEVICE cmd is a ATA cmd but not a SCSI cmd.\r
1684 // Normally it should NOT be passed down through ExtScsiPassThru protocol interface.\r
1685 // But to response EFI_DISK_INFO.Identify() request from ScsiDisk, we should handle this command.\r
1686 //\r
1687 if (*((UINT8*)Packet->Cdb) == ATA_CMD_IDENTIFY_DEVICE) {\r
1688 CopyMem (Packet->InDataBuffer, DeviceInfo->IdentifyData, sizeof (EFI_IDENTIFY_DATA));\r
1689 return EFI_SUCCESS;\r
1690 }\r
1691\r
1692 Mode = Instance->Mode;\r
1693 switch (Mode) {\r
1694 case EfiAtaIdeMode:\r
1695 //\r
1696 // Reassign IDE mode io port registers' base addresses\r
1697 //\r
1698 Status = GetIdeRegisterIoAddr (Instance->PciIo, Instance->IdeRegisters);\r
1699\r
1700 if (EFI_ERROR (Status)) {\r
1701 return Status;\r
1702 }\r
1703\r
1704 Status = AtaPacketCommandExecute (Instance->PciIo, &Instance->IdeRegisters[Port], Port, PortMultiplier, Packet);\r
1705 break;\r
1706 case EfiAtaAhciMode:\r
1707 Status = AhciPacketCommandExecute (Instance->PciIo, &Instance->AhciRegisters, Port, PortMultiplier, Packet);\r
1708 break;\r
1709 default :\r
1710 Status = EFI_DEVICE_ERROR;\r
1711 break;\r
1712 }\r
1713\r
1714 return Status;\r
1715}\r
1716\r
1717/**\r
1718 Used to retrieve the list of legal Target IDs and LUNs for SCSI devices on a SCSI channel. These \r
1719 can either be the list SCSI devices that are actually present on the SCSI channel, or the list of legal\r
1720 Target Ids and LUNs for the SCSI channel. Regardless, the caller of this function must probe the \r
1721 Target ID and LUN returned to see if a SCSI device is actually present at that location on the SCSI \r
1722 channel. \r
1723\r
1724 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
1725 @param Target On input, a pointer to the Target ID (an array of size\r
1726 TARGET_MAX_BYTES) of a SCSI device present on the SCSI channel.\r
1727 On output, a pointer to the Target ID (an array of\r
1728 TARGET_MAX_BYTES) of the next SCSI device present on a SCSI\r
1729 channel. An input value of 0xF(all bytes in the array are 0xF) in the\r
1730 Target array retrieves the Target ID of the first SCSI device present on a\r
1731 SCSI channel.\r
1732 @param Lun On input, a pointer to the LUN of a SCSI device present on the SCSI\r
1733 channel. On output, a pointer to the LUN of the next SCSI device present\r
1734 on a SCSI channel.\r
1735\r
1736 @retval EFI_SUCCESS The Target ID and LUN of the next SCSI device on the SCSI\r
1737 channel was returned in Target and Lun.\r
1738 @retval EFI_INVALID_PARAMETER Target array is not all 0xF, and Target and Lun were\r
1739 not returned on a previous call to GetNextTargetLun().\r
1740 @retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI channel.\r
1741\r
1742**/\r
1743EFI_STATUS\r
1744EFIAPI\r
1745ExtScsiPassThruGetNextTargetLun (\r
1746 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r
1747 IN OUT UINT8 **Target,\r
1748 IN OUT UINT64 *Lun\r
1749 )\r
1750{\r
1751 ATA_ATAPI_PASS_THRU_INSTANCE *Instance;\r
1752 LIST_ENTRY *Node;\r
1753 EFI_ATA_DEVICE_INFO *DeviceInfo;\r
1754 UINT8 *Target8;\r
1755 UINT16 *Target16;\r
1756\r
1757 Instance = EXT_SCSI_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);\r
1758\r
1759 if (Target == NULL || Lun == NULL) {\r
1760 return EFI_INVALID_PARAMETER;\r
1761 }\r
1762\r
1763 if (*Target == NULL) {\r
1764 return EFI_INVALID_PARAMETER;\r
1765 }\r
1766\r
1767 Target8 = *Target;\r
1768 Target16 = (UINT16 *)*Target;\r
1769\r
1770 if (CompareMem(Target8, mScsiId, TARGET_MAX_BYTES) != 0) {\r
1771 //\r
1772 // For ATAPI device, we use 2 least significant bytes to represent the location of SCSI device.\r
1773 // So the higher bytes in Target array should be 0xFF.\r
1774 //\r
1775 if (CompareMem (&Target8[2], &mScsiId[2], TARGET_MAX_BYTES - 2) != 0) {\r
1776 return EFI_INVALID_PARAMETER;\r
1777 }\r
1778\r
1779 //\r
1780 // When Target is not all 0xFF's, compare 2 least significant bytes with\r
1781 // previous target id to see if it is returned by previous call.\r
1782 //\r
1783 if ((*Target16 != Instance->PreviousTargetId) ||\r
1784 (*Lun != Instance->PreviousLun)) {\r
1785 return EFI_INVALID_PARAMETER;\r
1786 }\r
1787\r
1788 //\r
1789 // Traverse the whole device list to find the next cdrom closed to\r
1790 // the device signified by Target[0] and Target[1].\r
1791 //\r
1792 // Note that we here use a tricky way to find the next cdrom :\r
1793 // All ata devices are detected and inserted into the device list\r
1794 // sequentially.\r
1795 //\r
1796 Node = GetFirstNode (&Instance->DeviceList);\r
1797\r
1798 while (!IsNull (&Instance->DeviceList, Node)) {\r
1799 DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);\r
1800\r
1801 if ((DeviceInfo->Type == EfiIdeCdrom) &&\r
1802 ((Target8[0] < DeviceInfo->Port) || \r
1803 (Target8[1] < DeviceInfo->PortMultiplier))) {\r
1804 Target8[0] = (UINT8)DeviceInfo->Port;\r
1805 Target8[1] = (UINT8)DeviceInfo->PortMultiplier;\r
1806 goto Exit;\r
1807 }\r
1808\r
1809 Node = GetNextNode (&Instance->DeviceList, Node);\r
1810 }\r
1811\r
1812 return EFI_NOT_FOUND;\r
1813 } else {\r
1814 //\r
1815 // If the array is all 0xFF's, start to traverse the device list from the beginning\r
1816 //\r
1817 Node = GetFirstNode (&Instance->DeviceList);\r
1818 while (!IsNull (&Instance->DeviceList, Node)) {\r
1819 DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);\r
1820\r
1821 if (DeviceInfo->Type == EfiIdeCdrom) {\r
1822 Target8[0] = (UINT8)DeviceInfo->Port;\r
1823 Target8[1] = (UINT8)DeviceInfo->PortMultiplier;\r
1824 goto Exit;\r
1825 }\r
1826\r
1827 Node = GetNextNode (&Instance->DeviceList, Node);\r
1828 }\r
1829\r
1830 return EFI_NOT_FOUND;\r
1831 }\r
1832\r
1833Exit:\r
1834 *Lun = 0;\r
1835\r
1836 //\r
1837 // Update the PreviousTargetId.\r
1838 //\r
1839 Instance->PreviousTargetId = *Target16;\r
1840 Instance->PreviousLun = *Lun;\r
1841 \r
1842 return EFI_SUCCESS;\r
1843} \r
1844\r
1845/**\r
1846 Used to allocate and build a device path node for a SCSI device on a SCSI channel.\r
1847\r
1848 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
1849 @param Target The Target is an array of size TARGET_MAX_BYTES and it specifies the\r
1850 Target ID of the SCSI device for which a device path node is to be\r
1851 allocated and built. Transport drivers may chose to utilize a subset of\r
1852 this size to suit the representation of targets. For example, a Fibre\r
1853 Channel driver may use only 8 bytes (WWN) in the array to represent a\r
1854 FC target.\r
1855 @param Lun The LUN of the SCSI device for which a device path node is to be\r
1856 allocated and built.\r
1857 @param DevicePath A pointer to a single device path node that describes the SCSI device\r
1858 specified by Target and Lun. This function is responsible for\r
1859 allocating the buffer DevicePath with the boot service\r
1860 AllocatePool(). It is the caller's responsibility to free\r
1861 DevicePath when the caller is finished with DevicePath.\r
1862\r
1863 @retval EFI_SUCCESS The device path node that describes the SCSI device specified by\r
1864 Target and Lun was allocated and returned in\r
1865 DevicePath.\r
1866 @retval EFI_INVALID_PARAMETER DevicePath is NULL.\r
1867 @retval EFI_NOT_FOUND The SCSI devices specified by Target and Lun does not exist\r
1868 on the SCSI channel.\r
1869 @retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate DevicePath.\r
1870\r
1871**/\r
1872EFI_STATUS\r
1873EFIAPI\r
1874ExtScsiPassThruBuildDevicePath (\r
1875 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r
1876 IN UINT8 *Target,\r
1877 IN UINT64 Lun,\r
1878 IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath\r
1879 )\r
1880{\r
1881 EFI_DEV_PATH *DevicePathNode;\r
1882 ATA_ATAPI_PASS_THRU_INSTANCE *Instance;\r
1883 UINT8 Port;\r
1884 UINT8 PortMultiplier;\r
1885\r
1886 Instance = EXT_SCSI_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);\r
1887\r
1888 Port = Target[0];\r
1889 PortMultiplier = Target[1];\r
1890\r
1891 //\r
1892 // Validate parameters passed in.\r
1893 //\r
1894 if (DevicePath == NULL) {\r
1895 return EFI_INVALID_PARAMETER;\r
1896 }\r
1897\r
1898 //\r
1899 // can not build device path for the SCSI Host Controller.\r
1900 //\r
1901 if (Lun != 0) {\r
1902 return EFI_NOT_FOUND;\r
1903 }\r
1904\r
1905 if (SearchDeviceInfoList(Instance, Port, PortMultiplier, EfiIdeCdrom) == NULL) {\r
1906 return EFI_NOT_FOUND;\r
1907 }\r
1908 \r
1909 if (Instance->Mode == EfiAtaIdeMode) {\r
1910 DevicePathNode = AllocateCopyPool (sizeof (ATAPI_DEVICE_PATH), &mAtapiDevicePathTemplate);\r
1911 if (DevicePathNode == NULL) {\r
1912 return EFI_OUT_OF_RESOURCES;\r
1913 }\r
1914\r
1915 DevicePathNode->Atapi.PrimarySecondary = Port;\r
1916 DevicePathNode->Atapi.SlaveMaster = PortMultiplier;\r
1917 DevicePathNode->Atapi.Lun = (UINT16) Lun;\r
1918 } else {\r
1919 DevicePathNode = AllocateCopyPool (sizeof (SATA_DEVICE_PATH), &mSataDevicePathTemplate);\r
1920 if (DevicePathNode == NULL) {\r
1921 return EFI_OUT_OF_RESOURCES;\r
1922 }\r
1923\r
1924 DevicePathNode->Sata.HBAPortNumber = Port;\r
1925 DevicePathNode->Sata.PortMultiplierPortNumber = PortMultiplier;\r
1926 DevicePathNode->Sata.Lun = (UINT16) Lun;\r
1927 }\r
1928\r
1929 *DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) DevicePathNode;\r
1930\r
1931 return EFI_SUCCESS;\r
1932}\r
1933\r
1934/**\r
1935 Used to translate a device path node to a Target ID and LUN.\r
1936\r
1937 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
1938 @param DevicePath A pointer to a single device path node that describes the SCSI device\r
1939 on the SCSI channel.\r
1940 @param Target A pointer to the Target Array which represents the ID of a SCSI device\r
1941 on the SCSI channel.\r
1942 @param Lun A pointer to the LUN of a SCSI device on the SCSI channel.\r
1943\r
1944 @retval EFI_SUCCESS DevicePath was successfully translated to a Target ID and\r
1945 LUN, and they were returned in Target and Lun.\r
1946 @retval EFI_INVALID_PARAMETER DevicePath or Target or Lun is NULL.\r
1947 @retval EFI_NOT_FOUND A valid translation from DevicePath to a Target ID and LUN\r
1948 does not exist.\r
1949 @retval EFI_UNSUPPORTED This driver does not support the device path node type in\r
1950 DevicePath.\r
1951\r
1952**/\r
1953EFI_STATUS\r
1954EFIAPI\r
1955ExtScsiPassThruGetTargetLun (\r
1956 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r
1957 IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,\r
1958 OUT UINT8 **Target,\r
1959 OUT UINT64 *Lun\r
1960 )\r
1961{\r
1962 EFI_DEV_PATH *DevicePathNode;\r
1963 ATA_ATAPI_PASS_THRU_INSTANCE *Instance;\r
1964 LIST_ENTRY *Node;\r
1965\r
1966 Instance = EXT_SCSI_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);\r
1967\r
1968 //\r
1969 // Validate parameters passed in.\r
1970 //\r
1971 if (DevicePath == NULL || Target == NULL || Lun == NULL) {\r
1972 return EFI_INVALID_PARAMETER;\r
1973 }\r
1974\r
1975 if (*Target == NULL) {\r
1976 return EFI_INVALID_PARAMETER;\r
1977 }\r
1978 //\r
1979 // Check whether the DevicePath belongs to SCSI_DEVICE_PATH\r
1980 //\r
1981 if ((DevicePath->Type != MESSAGING_DEVICE_PATH) ||\r
1982 ((DevicePath->SubType != MSG_ATAPI_DP) &&\r
1983 (DevicePath->SubType != MSG_SATA_DP)) ||\r
1984 ((DevicePathNodeLength(DevicePath) != sizeof(ATAPI_DEVICE_PATH)) &&\r
1985 (DevicePathNodeLength(DevicePath) != sizeof(SATA_DEVICE_PATH)))) {\r
1986 return EFI_UNSUPPORTED;\r
1987 }\r
1988\r
1989 SetMem (*Target, TARGET_MAX_BYTES, 0xFF);\r
1990\r
1991 DevicePathNode = (EFI_DEV_PATH *) DevicePath;\r
1992\r
1993 if (Instance->Mode == EfiAtaIdeMode) {\r
1994 (*Target)[0] = (UINT8) DevicePathNode->Atapi.PrimarySecondary;\r
1995 (*Target)[1] = (UINT8) DevicePathNode->Atapi.SlaveMaster;\r
1996 *Lun = (UINT8) DevicePathNode->Atapi.Lun;\r
1997 } else {\r
1998 (*Target)[0] = (UINT8) DevicePathNode->Sata.HBAPortNumber;\r
1999 (*Target)[1] = (UINT8) DevicePathNode->Sata.PortMultiplierPortNumber;\r
2000 *Lun = (UINT8) DevicePathNode->Sata.Lun;\r
2001 }\r
2002\r
2003 Node = SearchDeviceInfoList(Instance, (*Target)[0], (*Target)[1], EfiIdeCdrom);\r
2004\r
2005 if (Node == NULL) {\r
2006 return EFI_NOT_FOUND;\r
2007 }\r
2008\r
2009 if (*Lun != 0) {\r
2010 return EFI_NOT_FOUND;\r
2011 }\r
2012\r
2013 return EFI_SUCCESS;\r
2014}\r
2015\r
2016/**\r
2017 Resets a SCSI channel. This operation resets all the SCSI devices connected to the SCSI channel.\r
2018\r
2019 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
2020\r
2021 @retval EFI_SUCCESS The SCSI channel was reset.\r
2022 @retval EFI_DEVICE_ERROR A device error occurred while attempting to reset the SCSI channel.\r
2023 @retval EFI_TIMEOUT A timeout occurred while attempting to reset the SCSI channel.\r
2024 @retval EFI_UNSUPPORTED The SCSI channel does not support a channel reset operation.\r
2025\r
2026**/\r
2027EFI_STATUS\r
2028EFIAPI\r
2029ExtScsiPassThruResetChannel (\r
2030 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This\r
2031 )\r
2032{\r
2033 return EFI_UNSUPPORTED;\r
2034} \r
2035 \r
2036/**\r
2037 Resets a SCSI logical unit that is connected to a SCSI channel.\r
2038\r
2039 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
2040 @param Target The Target is an array of size TARGET_MAX_BYTE and it represents the\r
2041 target port ID of the SCSI device containing the SCSI logical unit to\r
2042 reset. Transport drivers may chose to utilize a subset of this array to suit\r
2043 the representation of their targets.\r
2044 @param Lun The LUN of the SCSI device to reset.\r
2045\r
2046 @retval EFI_SUCCESS The SCSI device specified by Target and Lun was reset.\r
2047 @retval EFI_INVALID_PARAMETER Target or Lun is NULL.\r
2048 @retval EFI_TIMEOUT A timeout occurred while attempting to reset the SCSI device\r
2049 specified by Target and Lun.\r
2050 @retval EFI_UNSUPPORTED The SCSI channel does not support a target reset operation.\r
2051 @retval EFI_DEVICE_ERROR A device error occurred while attempting to reset the SCSI device\r
2052 specified by Target and Lun.\r
2053\r
2054**/\r
2055EFI_STATUS\r
2056EFIAPI\r
2057ExtScsiPassThruResetTargetLun (\r
2058 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r
2059 IN UINT8 *Target,\r
2060 IN UINT64 Lun\r
2061 )\r
2062{\r
2063 return EFI_UNSUPPORTED;\r
2064} \r
2065\r
2066/**\r
2067 Used to retrieve the list of legal Target IDs for SCSI devices on a SCSI channel. These can either \r
2068 be the list SCSI devices that are actually present on the SCSI channel, or the list of legal Target IDs\r
2069 for the SCSI channel. Regardless, the caller of this function must probe the Target ID returned to \r
2070 see if a SCSI device is actually present at that location on the SCSI channel. \r
2071\r
2072 @param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.\r
2073 @param Target (TARGET_MAX_BYTES) of a SCSI device present on the SCSI channel.\r
2074 On output, a pointer to the Target ID (an array of\r
2075 TARGET_MAX_BYTES) of the next SCSI device present on a SCSI\r
2076 channel. An input value of 0xF(all bytes in the array are 0xF) in the\r
2077 Target array retrieves the Target ID of the first SCSI device present on a\r
2078 SCSI channel.\r
2079\r
2080 @retval EFI_SUCCESS The Target ID of the next SCSI device on the SCSI\r
2081 channel was returned in Target.\r
2082 @retval EFI_INVALID_PARAMETER Target or Lun is NULL.\r
2083 @retval EFI_TIMEOUT Target array is not all 0xF, and Target was not\r
2084 returned on a previous call to GetNextTarget().\r
2085 @retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI channel.\r
2086\r
2087**/\r
2088EFI_STATUS\r
2089EFIAPI\r
2090ExtScsiPassThruGetNextTarget (\r
2091 IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,\r
2092 IN OUT UINT8 **Target\r
2093 )\r
2094{\r
2095 ATA_ATAPI_PASS_THRU_INSTANCE *Instance;\r
2096 LIST_ENTRY *Node;\r
2097 EFI_ATA_DEVICE_INFO *DeviceInfo;\r
2098 UINT8 *Target8;\r
2099 UINT16 *Target16;\r
2100\r
2101 Instance = EXT_SCSI_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);\r
2102\r
2103 if (Target == NULL || *Target == NULL) {\r
2104 return EFI_INVALID_PARAMETER;\r
2105 }\r
2106\r
2107 Target8 = *Target;\r
2108 Target16 = (UINT16 *)*Target;\r
2109\r
2110 if (CompareMem(Target8, mScsiId, TARGET_MAX_BYTES) != 0) {\r
2111 //\r
2112 // For ATAPI device, we use 2 least significant bytes to represent the location of SCSI device.\r
2113 // So the higher bytes in Target array should be 0xFF.\r
2114 //\r
2115 if (CompareMem (&Target8[2], &mScsiId[2], TARGET_MAX_BYTES - 2) != 0) {\r
2116 return EFI_INVALID_PARAMETER;\r
2117 }\r
2118\r
2119 //\r
2120 // When Target is not all 0xFF's, compare 2 least significant bytes with\r
2121 // previous target id to see if it is returned by previous call.\r
2122 //\r
2123 if (*Target16 != Instance->PreviousTargetId) {\r
2124 return EFI_INVALID_PARAMETER;\r
2125 }\r
2126\r
2127 //\r
2128 // Traverse the whole device list to find the next cdrom closed to\r
2129 // the device signified by Target[0] and Target[1].\r
2130 //\r
2131 // Note that we here use a tricky way to find the next cdrom :\r
2132 // All ata devices are detected and inserted into the device list\r
2133 // sequentially.\r
2134 //\r
2135 Node = GetFirstNode (&Instance->DeviceList);\r
2136 while (!IsNull (&Instance->DeviceList, Node)) {\r
2137 DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);\r
2138\r
2139 if ((DeviceInfo->Type == EfiIdeCdrom) &&\r
2140 ((Target8[0] < DeviceInfo->Port) || \r
2141 (Target8[1] < DeviceInfo->PortMultiplier))) {\r
2142 Target8[0] = (UINT8)DeviceInfo->Port;\r
2143 Target8[1] = (UINT8)DeviceInfo->PortMultiplier;\r
2144 goto Exit;\r
2145 }\r
2146\r
2147 Node = GetNextNode (&Instance->DeviceList, Node);\r
2148 }\r
2149\r
2150 return EFI_NOT_FOUND;\r
2151 } else {\r
2152 //\r
2153 // If the array is all 0xFF's, start to traverse the device list from the beginning\r
2154 //\r
2155 Node = GetFirstNode (&Instance->DeviceList);\r
2156\r
2157 while (!IsNull (&Instance->DeviceList, Node)) {\r
2158 DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);\r
2159\r
2160 if (DeviceInfo->Type == EfiIdeCdrom) {\r
2161 Target8[0] = (UINT8)DeviceInfo->Port;\r
2162 Target8[1] = (UINT8)DeviceInfo->PortMultiplier;\r
2163 goto Exit;\r
2164 }\r
2165\r
2166 Node = GetNextNode (&Instance->DeviceList, Node);\r
2167 }\r
2168\r
2169 return EFI_NOT_FOUND;\r
2170 }\r
2171\r
2172Exit:\r
2173 //\r
2174 // Update the PreviousTargetId.\r
2175 //\r
2176 Instance->PreviousTargetId = *Target16;\r
2177\r
2178 return EFI_SUCCESS;\r
2179} \r
2180\r
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