1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
|
/** @file
The SdDxe driver is used to manage the SD memory card device.
It produces BlockIo and BlockIo2 protocols to allow upper layer
access the SD memory card device.
Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "SdDxe.h"
//
// SdDxe Driver Binding Protocol Instance
//
EFI_DRIVER_BINDING_PROTOCOL gSdDxeDriverBinding = {
SdDxeDriverBindingSupported,
SdDxeDriverBindingStart,
SdDxeDriverBindingStop,
0x10,
NULL,
NULL
};
//
// Template for SD_DEVICE data structure.
//
SD_DEVICE mSdDeviceTemplate = {
SD_DEVICE_SIGNATURE, // Signature
NULL, // Handle
NULL, // DevicePath
0xFF, // Slot
FALSE, // SectorAddressing
{ // BlockIo
EFI_BLOCK_IO_PROTOCOL_REVISION,
NULL,
SdReset,
SdReadBlocks,
SdWriteBlocks,
SdFlushBlocks
},
{ // BlockIo2
NULL,
SdResetEx,
SdReadBlocksEx,
SdWriteBlocksEx,
SdFlushBlocksEx
},
{ // BlockMedia
0, // MediaId
FALSE, // RemovableMedia
TRUE, // MediaPresent
FALSE, // LogicPartition
FALSE, // ReadOnly
FALSE, // WritingCache
0x200, // BlockSize
0, // IoAlign
0 // LastBlock
},
{ // EraseBlock
EFI_ERASE_BLOCK_PROTOCOL_REVISION,
1,
SdEraseBlocks
},
{ // DiskInfo
EFI_DISK_INFO_SD_MMC_INTERFACE_GUID,
SdDiskInfoInquiry,
SdDiskInfoIdentify,
SdDiskInfoSenseData,
SdDiskInfoWhichIde
},
{ // Queue
NULL,
NULL
},
{ // Csd
0,
},
{ // Cid
0,
},
NULL, // ControllerNameTable
{ // ModelName
0,
},
NULL // Private
};
/**
Decode and print SD CSD Register content.
@param[in] Csd Pointer to SD_CSD data structure.
@retval EFI_SUCCESS The function completed successfully
**/
EFI_STATUS
DumpCsd (
IN SD_CSD *Csd
)
{
SD_CSD2 *Csd2;
DEBUG((DEBUG_INFO, "== Dump Sd Csd Register==\n"));
DEBUG((DEBUG_INFO, " CSD structure 0x%x\n", Csd->CsdStructure));
DEBUG((DEBUG_INFO, " Data read access-time 1 0x%x\n", Csd->Taac));
DEBUG((DEBUG_INFO, " Data read access-time 2 0x%x\n", Csd->Nsac));
DEBUG((DEBUG_INFO, " Max. bus clock frequency 0x%x\n", Csd->TranSpeed));
DEBUG((DEBUG_INFO, " Device command classes 0x%x\n", Csd->Ccc));
DEBUG((DEBUG_INFO, " Max. read data block length 0x%x\n", Csd->ReadBlLen));
DEBUG((DEBUG_INFO, " Partial blocks for read allowed 0x%x\n", Csd->ReadBlPartial));
DEBUG((DEBUG_INFO, " Write block misalignment 0x%x\n", Csd->WriteBlkMisalign));
DEBUG((DEBUG_INFO, " Read block misalignment 0x%x\n", Csd->ReadBlkMisalign));
DEBUG((DEBUG_INFO, " DSR implemented 0x%x\n", Csd->DsrImp));
if (Csd->CsdStructure == 0) {
DEBUG((DEBUG_INFO, " Device size 0x%x\n", Csd->CSizeLow | (Csd->CSizeHigh << 2)));
DEBUG((DEBUG_INFO, " Max. read current @ VDD min 0x%x\n", Csd->VddRCurrMin));
DEBUG((DEBUG_INFO, " Max. read current @ VDD max 0x%x\n", Csd->VddRCurrMax));
DEBUG((DEBUG_INFO, " Max. write current @ VDD min 0x%x\n", Csd->VddWCurrMin));
DEBUG((DEBUG_INFO, " Max. write current @ VDD max 0x%x\n", Csd->VddWCurrMax));
} else {
Csd2 = (SD_CSD2*)(VOID*)Csd;
DEBUG((DEBUG_INFO, " Device size 0x%x\n", Csd2->CSizeLow | (Csd->CSizeHigh << 16)));
}
DEBUG((DEBUG_INFO, " Erase sector size 0x%x\n", Csd->SectorSize));
DEBUG((DEBUG_INFO, " Erase single block enable 0x%x\n", Csd->EraseBlkEn));
DEBUG((DEBUG_INFO, " Write protect group size 0x%x\n", Csd->WpGrpSize));
DEBUG((DEBUG_INFO, " Write protect group enable 0x%x\n", Csd->WpGrpEnable));
DEBUG((DEBUG_INFO, " Write speed factor 0x%x\n", Csd->R2WFactor));
DEBUG((DEBUG_INFO, " Max. write data block length 0x%x\n", Csd->WriteBlLen));
DEBUG((DEBUG_INFO, " Partial blocks for write allowed 0x%x\n", Csd->WriteBlPartial));
DEBUG((DEBUG_INFO, " File format group 0x%x\n", Csd->FileFormatGrp));
DEBUG((DEBUG_INFO, " Copy flag (OTP) 0x%x\n", Csd->Copy));
DEBUG((DEBUG_INFO, " Permanent write protection 0x%x\n", Csd->PermWriteProtect));
DEBUG((DEBUG_INFO, " Temporary write protection 0x%x\n", Csd->TmpWriteProtect));
DEBUG((DEBUG_INFO, " File format 0x%x\n", Csd->FileFormat));
return EFI_SUCCESS;
}
/**
Get SD device model name.
@param[in, out] Device The pointer to the SD_DEVICE data structure.
@param[in] Cid Pointer to SD_CID data structure.
@retval EFI_SUCCESS The function completed successfully
**/
EFI_STATUS
GetSdModelName (
IN OUT SD_DEVICE *Device,
IN SD_CID *Cid
)
{
CHAR8 String[SD_MODEL_NAME_MAX_LEN];
ZeroMem (String, sizeof (String));
CopyMem (String, Cid->OemId, sizeof (Cid->OemId));
String[sizeof (Cid->OemId)] = ' ';
CopyMem (String + sizeof (Cid->OemId) + 1, Cid->ProductName, sizeof (Cid->ProductName));
String[sizeof (Cid->OemId) + sizeof (Cid->ProductName)] = ' ';
CopyMem (String + sizeof (Cid->OemId) + sizeof (Cid->ProductName) + 1, Cid->ProductSerialNumber, sizeof (Cid->ProductSerialNumber));
AsciiStrToUnicodeStrS (String, Device->ModelName, sizeof (Device->ModelName) / sizeof (Device->ModelName[0]));
return EFI_SUCCESS;
}
/**
Discover user area partition in the SD device.
@param[in] Device The pointer to the SD_DEVICE data structure.
@retval EFI_SUCCESS The user area partition in the SD device is successfully identified.
@return Others Some error occurs when identifying the user area.
**/
EFI_STATUS
DiscoverUserArea (
IN SD_DEVICE *Device
)
{
EFI_STATUS Status;
SD_CSD *Csd;
SD_CSD2 *Csd2;
SD_CID *Cid;
UINT64 Capacity;
UINT32 DevStatus;
UINT16 Rca;
UINT32 CSize;
UINT32 CSizeMul;
UINT32 ReadBlLen;
//
// Deselect the device to force it enter stby mode.
// Note here we don't judge return status as some SD devices return
// error but the state has been stby.
//
SdSelect (Device, 0);
Status = SdSetRca (Device, &Rca);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "DiscoverUserArea(): Assign new Rca = 0x%x fails with %r\n", Rca, Status));
return Status;
}
Csd = &Device->Csd;
Status = SdGetCsd (Device, Rca, Csd);
if (EFI_ERROR (Status)) {
return Status;
}
DumpCsd (Csd);
Cid = &Device->Cid;
Status = SdGetCid (Device, Rca, Cid);
if (EFI_ERROR (Status)) {
return Status;
}
GetSdModelName (Device, Cid);
Status = SdSelect (Device, Rca);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "DiscoverUserArea(): Reselect the device 0x%x fails with %r\n", Rca, Status));
return Status;
}
Status = SdSendStatus (Device, Rca, &DevStatus);
if (EFI_ERROR (Status)) {
return Status;
}
if (Csd->CsdStructure == 0) {
Device->SectorAddressing = FALSE;
CSize = (Csd->CSizeHigh << 2 | Csd->CSizeLow) + 1;
CSizeMul = (1 << (Csd->CSizeMul + 2));
ReadBlLen = (1 << (Csd->ReadBlLen));
Capacity = MultU64x32 (MultU64x32 ((UINT64)CSize, CSizeMul), ReadBlLen);
} else {
Device->SectorAddressing = TRUE;
Csd2 = (SD_CSD2*)(VOID*)Csd;
CSize = (Csd2->CSizeHigh << 16 | Csd2->CSizeLow) + 1;
Capacity = MultU64x32 ((UINT64)CSize, SIZE_512KB);
}
Device->BlockIo.Media = &Device->BlockMedia;
Device->BlockIo2.Media = &Device->BlockMedia;
Device->BlockMedia.IoAlign = Device->Private->PassThru->IoAlign;
Device->BlockMedia.BlockSize = 0x200;
Device->BlockMedia.LastBlock = 0x00;
Device->BlockMedia.RemovableMedia = TRUE;
Device->BlockMedia.MediaPresent = TRUE;
Device->BlockMedia.LogicalPartition = FALSE;
Device->BlockMedia.LastBlock = DivU64x32 (Capacity, Device->BlockMedia.BlockSize) - 1;
if (Csd->EraseBlkEn) {
Device->EraseBlock.EraseLengthGranularity = 1;
} else {
Device->EraseBlock.EraseLengthGranularity = (Csd->SectorSize + 1) * (1 << (Csd->WriteBlLen - 9));
}
return Status;
}
/**
Scan SD Bus to discover the device.
@param[in] Private The SD driver private data structure.
@param[in] Slot The slot number to check device present.
@retval EFI_SUCCESS Successfully to discover the device and attach
SdMmcIoProtocol to it.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
of resources.
@retval EFI_ALREADY_STARTED The device was discovered before.
@retval Others Fail to discover the device.
**/
EFI_STATUS
EFIAPI
DiscoverSdDevice (
IN SD_DRIVER_PRIVATE_DATA *Private,
IN UINT8 Slot
)
{
EFI_STATUS Status;
SD_DEVICE *Device;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath;
EFI_HANDLE DeviceHandle;
EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
Device = NULL;
DevicePath = NULL;
NewDevicePath = NULL;
RemainingDevicePath = NULL;
PassThru = Private->PassThru;
//
// Build Device Path
//
Status = PassThru->BuildDevicePath (
PassThru,
Slot,
&DevicePath
);
if (EFI_ERROR(Status)) {
return Status;
}
if (DevicePath->SubType != MSG_SD_DP) {
Status = EFI_UNSUPPORTED;
goto Error;
}
NewDevicePath = AppendDevicePathNode (
Private->ParentDevicePath,
DevicePath
);
if (NewDevicePath == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error;
}
DeviceHandle = NULL;
RemainingDevicePath = NewDevicePath;
Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &RemainingDevicePath, &DeviceHandle);
if (!EFI_ERROR (Status) && (DeviceHandle != NULL) && IsDevicePathEnd(RemainingDevicePath)) {
//
// The device has been started, directly return to fast boot.
//
Status = EFI_ALREADY_STARTED;
goto Error;
}
//
// Allocate buffer to store SD_DEVICE private data.
//
Device = AllocateCopyPool (sizeof (SD_DEVICE), &mSdDeviceTemplate);
if (Device == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error;
}
Device->DevicePath = NewDevicePath;
Device->Slot = Slot;
Device->Private = Private;
InitializeListHead (&Device->Queue);
//
// Expose user area in the Sd memory card to upper layer.
//
Status = DiscoverUserArea (Device);
if (EFI_ERROR(Status)) {
goto Error;
}
Device->ControllerNameTable = NULL;
AddUnicodeString2 (
"eng",
gSdDxeComponentName.SupportedLanguages,
&Device->ControllerNameTable,
Device->ModelName,
TRUE
);
AddUnicodeString2 (
"en",
gSdDxeComponentName2.SupportedLanguages,
&Device->ControllerNameTable,
Device->ModelName,
FALSE
);
Status = gBS->InstallMultipleProtocolInterfaces (
&Device->Handle,
&gEfiDevicePathProtocolGuid,
Device->DevicePath,
&gEfiBlockIoProtocolGuid,
&Device->BlockIo,
&gEfiBlockIo2ProtocolGuid,
&Device->BlockIo2,
&gEfiEraseBlockProtocolGuid,
&Device->EraseBlock,
&gEfiDiskInfoProtocolGuid,
&Device->DiskInfo,
NULL
);
if (!EFI_ERROR (Status)) {
gBS->OpenProtocol (
Private->Controller,
&gEfiSdMmcPassThruProtocolGuid,
(VOID **) &(Private->PassThru),
Private->DriverBindingHandle,
Device->Handle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
}
Error:
FreePool (DevicePath);
if (EFI_ERROR (Status) && (NewDevicePath != NULL)) {
FreePool (NewDevicePath);
}
if (EFI_ERROR (Status) && (Device != NULL)) {
FreePool (Device);
}
return Status;
}
/**
Tests to see if this driver supports a given controller. If a child device is provided,
it further tests to see if this driver supports creating a handle for the specified child device.
This function checks to see if the driver specified by This supports the device specified by
ControllerHandle. Drivers will typically use the device path attached to
ControllerHandle and/or the services from the bus I/O abstraction attached to
ControllerHandle to determine if the driver supports ControllerHandle. This function
may be called many times during platform initialization. In order to reduce boot times, the tests
performed by this function must be very small, and take as little time as possible to execute. This
function must not change the state of any hardware devices, and this function must be aware that the
device specified by ControllerHandle may already be managed by the same driver or a
different driver. This function must match its calls to AllocatePages() with FreePages(),
AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol().
Since ControllerHandle may have been previously started by the same driver, if a protocol is
already in the opened state, then it must not be closed with CloseProtocol(). This is required
to guarantee the state of ControllerHandle is not modified by this function.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] ControllerHandle The handle of the controller to test. This handle
must support a protocol interface that supplies
an I/O abstraction to the driver.
@param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This
parameter is ignored by device drivers, and is optional for bus
drivers. For bus drivers, if this parameter is not NULL, then
the bus driver must determine if the bus controller specified
by ControllerHandle and the child controller specified
by RemainingDevicePath are both supported by this
bus driver.
@retval EFI_SUCCESS The device specified by ControllerHandle and
RemainingDevicePath is supported by the driver specified by This.
@retval EFI_ALREADY_STARTED The device specified by ControllerHandle and
RemainingDevicePath is already being managed by the driver
specified by This.
@retval EFI_ACCESS_DENIED The device specified by ControllerHandle and
RemainingDevicePath is already being managed by a different
driver or an application that requires exclusive access.
Currently not implemented.
@retval EFI_UNSUPPORTED The device specified by ControllerHandle and
RemainingDevicePath is not supported by the driver specified by This.
**/
EFI_STATUS
EFIAPI
SdDxeDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
UINT8 Slot;
//
// Test EFI_SD_MMC_PASS_THRU_PROTOCOL on the controller handle.
//
Status = gBS->OpenProtocol (
Controller,
&gEfiSdMmcPassThruProtocolGuid,
(VOID**) &PassThru,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (Status == EFI_ALREADY_STARTED) {
return EFI_SUCCESS;
}
if (EFI_ERROR (Status)) {
return Status;
}
//
// Test RemainingDevicePath is valid or not.
//
if ((RemainingDevicePath != NULL) && !IsDevicePathEnd (RemainingDevicePath)) {
Status = PassThru->GetSlotNumber (PassThru, RemainingDevicePath, &Slot);
if (EFI_ERROR (Status)) {
//
// Close the I/O Abstraction(s) used to perform the supported test
//
gBS->CloseProtocol (
Controller,
&gEfiSdMmcPassThruProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
}
//
// Close the I/O Abstraction(s) used to perform the supported test
//
gBS->CloseProtocol (
Controller,
&gEfiSdMmcPassThruProtocolGuid,
This->DriverBindingHandle,
Controller
);
//
// Open the EFI Device Path protocol needed to perform the supported test
//
Status = gBS->OpenProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **) &ParentDevicePath,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
return Status;
}
/**
Starts a device controller or a bus controller.
The Start() function is designed to be invoked from the EFI boot service ConnectController().
As a result, much of the error checking on the parameters to Start() has been moved into this
common boot service. It is legal to call Start() from other locations,
but the following calling restrictions must be followed or the system behavior will not be deterministic.
1. ControllerHandle must be a valid EFI_HANDLE.
2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned
EFI_DEVICE_PATH_PROTOCOL.
3. Prior to calling Start(), the Supported() function for the driver specified by This must
have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] ControllerHandle The handle of the controller to start. This handle
must support a protocol interface that supplies
an I/O abstraction to the driver.
@param[in] RemainingDevicePath A pointer to the remaining portion of a device path. This
parameter is ignored by device drivers, and is optional for bus
drivers. For a bus driver, if this parameter is NULL, then handles
for all the children of Controller are created by this driver.
If this parameter is not NULL and the first Device Path Node is
not the End of Device Path Node, then only the handle for the
child device specified by the first Device Path Node of
RemainingDevicePath is created by this driver.
If the first Device Path Node of RemainingDevicePath is
the End of Device Path Node, no child handle is created by this
driver.
@retval EFI_SUCCESS The device was started.
@retval EFI_DEVICE_ERROR The device could not be started due to a device error.Currently not implemented.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
@retval Others The driver failded to start the device.
**/
EFI_STATUS
EFIAPI
SdDxeDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
SD_DRIVER_PRIVATE_DATA *Private;
UINT8 Slot;
Private = NULL;
PassThru = NULL;
Status = gBS->OpenProtocol (
Controller,
&gEfiSdMmcPassThruProtocolGuid,
(VOID **) &PassThru,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if ((EFI_ERROR (Status)) && (Status != EFI_ALREADY_STARTED)) {
return Status;
}
//
// Check EFI_ALREADY_STARTED to reuse the original SD_DRIVER_PRIVATE_DATA.
//
if (Status != EFI_ALREADY_STARTED) {
Private = AllocateZeroPool (sizeof (SD_DRIVER_PRIVATE_DATA));
if (Private == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error;
}
Status = gBS->OpenProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **) &ParentDevicePath,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
ASSERT_EFI_ERROR (Status);
Private->PassThru = PassThru;
Private->Controller = Controller;
Private->ParentDevicePath = ParentDevicePath;
Private->DriverBindingHandle = This->DriverBindingHandle;
Status = gBS->InstallProtocolInterface (
&Controller,
&gEfiCallerIdGuid,
EFI_NATIVE_INTERFACE,
Private
);
if (EFI_ERROR (Status)) {
goto Error;
}
} else {
Status = gBS->OpenProtocol (
Controller,
&gEfiCallerIdGuid,
(VOID **) &Private,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
goto Error;
}
}
if (RemainingDevicePath == NULL) {
Slot = 0xFF;
while (TRUE) {
Status = PassThru->GetNextSlot (PassThru, &Slot);
if (EFI_ERROR (Status)) {
//
// Cannot find more legal slots.
//
Status = EFI_SUCCESS;
break;
}
Status = DiscoverSdDevice (Private, Slot);
if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {
break;
}
}
} else if (!IsDevicePathEnd (RemainingDevicePath)) {
Status = PassThru->GetSlotNumber (PassThru, RemainingDevicePath, &Slot);
if (!EFI_ERROR (Status)) {
Status = DiscoverSdDevice (Private, Slot);
}
}
Error:
if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {
gBS->CloseProtocol (
Controller,
&gEfiSdMmcPassThruProtocolGuid,
This->DriverBindingHandle,
Controller
);
if (Private != NULL) {
gBS->UninstallMultipleProtocolInterfaces (
Controller,
&gEfiCallerIdGuid,
Private,
NULL
);
FreePool (Private);
}
}
return Status;
}
/**
Stops a device controller or a bus controller.
The Stop() function is designed to be invoked from the EFI boot service DisconnectController().
As a result, much of the error checking on the parameters to Stop() has been moved
into this common boot service. It is legal to call Stop() from other locations,
but the following calling restrictions must be followed or the system behavior will not be deterministic.
1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this
same driver's Start() function.
2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid
EFI_HANDLE. In addition, all of these handles must have been created in this driver's
Start() function, and the Start() function must have called OpenProtocol() on
ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.
@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
@param[in] ControllerHandle A handle to the device being stopped. The handle must
support a bus specific I/O protocol for the driver
to use to stop the device.
@param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.
@param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL
if NumberOfChildren is 0.
@retval EFI_SUCCESS The device was stopped.
@retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
**/
EFI_STATUS
EFIAPI
SdDxeDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
{
EFI_STATUS Status;
BOOLEAN AllChildrenStopped;
UINTN Index;
SD_DRIVER_PRIVATE_DATA *Private;
SD_DEVICE *Device;
EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
EFI_BLOCK_IO2_PROTOCOL *BlockIo2;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
LIST_ENTRY *Link;
LIST_ENTRY *NextLink;
SD_REQUEST *Request;
EFI_TPL OldTpl;
if (NumberOfChildren == 0) {
Status = gBS->OpenProtocol (
Controller,
&gEfiCallerIdGuid,
(VOID **) &Private,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
gBS->UninstallProtocolInterface (
Controller,
&gEfiCallerIdGuid,
Private
);
gBS->CloseProtocol (
Controller,
&gEfiSdMmcPassThruProtocolGuid,
This->DriverBindingHandle,
Controller
);
FreePool (Private);
return EFI_SUCCESS;
}
AllChildrenStopped = TRUE;
for (Index = 0; Index < NumberOfChildren; Index++) {
BlockIo = NULL;
BlockIo2 = NULL;
Status = gBS->OpenProtocol (
ChildHandleBuffer[Index],
&gEfiBlockIoProtocolGuid,
(VOID **) &BlockIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
Status = gBS->OpenProtocol (
ChildHandleBuffer[Index],
&gEfiBlockIo2ProtocolGuid,
(VOID **) &BlockIo2,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
AllChildrenStopped = FALSE;
continue;
}
}
if (BlockIo != NULL) {
Device = SD_DEVICE_DATA_FROM_BLKIO (BlockIo);
} else {
ASSERT (BlockIo2 != NULL);
Device = SD_DEVICE_DATA_FROM_BLKIO2 (BlockIo2);
}
//
// Free all on-going async tasks.
//
OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
for (Link = GetFirstNode (&Device->Queue);
!IsNull (&Device->Queue, Link);
Link = NextLink) {
NextLink = GetNextNode (&Device->Queue, Link);
RemoveEntryList (Link);
Request = SD_REQUEST_FROM_LINK (Link);
gBS->CloseEvent (Request->Event);
Request->Token->TransactionStatus = EFI_ABORTED;
if (Request->IsEnd) {
gBS->SignalEvent (Request->Token->Event);
}
FreePool (Request);
}
gBS->RestoreTPL (OldTpl);
//
// Close the child handle
//
Status = gBS->CloseProtocol (
Controller,
&gEfiSdMmcPassThruProtocolGuid,
This->DriverBindingHandle,
ChildHandleBuffer[Index]
);
Status = gBS->UninstallMultipleProtocolInterfaces (
ChildHandleBuffer[Index],
&gEfiDevicePathProtocolGuid,
Device->DevicePath,
&gEfiBlockIoProtocolGuid,
&Device->BlockIo,
&gEfiBlockIo2ProtocolGuid,
&Device->BlockIo2,
&gEfiEraseBlockProtocolGuid,
&Device->EraseBlock,
&gEfiDiskInfoProtocolGuid,
&Device->DiskInfo,
NULL
);
if (EFI_ERROR (Status)) {
AllChildrenStopped = FALSE;
gBS->OpenProtocol (
Controller,
&gEfiSdMmcPassThruProtocolGuid,
(VOID **)&PassThru,
This->DriverBindingHandle,
ChildHandleBuffer[Index],
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
} else {
FreePool (Device->DevicePath);
FreeUnicodeStringTable (Device->ControllerNameTable);
FreePool (Device);
}
}
if (!AllChildrenStopped) {
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
The user Entry Point for module SdDxe. The user code starts with this function.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The entry point is executed successfully.
@retval other Some errors occur when executing this entry point.
**/
EFI_STATUS
EFIAPI
InitializeSdDxe (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
//
// Install driver model protocol(s).
//
Status = EfiLibInstallDriverBindingComponentName2 (
ImageHandle,
SystemTable,
&gSdDxeDriverBinding,
ImageHandle,
&gSdDxeComponentName,
&gSdDxeComponentName2
);
ASSERT_EFI_ERROR (Status);
return Status;
}
|