3 * Copyright (c) 2011-2012, ARM Limited. All rights reserved.
5 * This program and the accompanying materials
6 * are licensed and made available under the terms and conditions of the BSD License
7 * which accompanies this distribution. The full text of the license may be found at
8 * http://opensource.org/licenses/bsd-license.php
10 * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
15 #include <Protocol/MmcHost.h>
16 #include <Library/DebugLib.h>
17 #include <Library/BaseMemoryLib.h>
18 #include <Library/TimerLib.h>
25 #define MAX_RETRY_COUNT 1000
26 #define CMD_RETRY_COUNT 20
30 IN MMC_HOST_INSTANCE
*MmcHostInstance
,
34 MmcHostInstance
->State
= State
;
35 return MmcHostInstance
->MmcHost
->NotifyState (MmcHostInstance
->MmcHost
, State
);
52 // The MMC register bits [23:8] indicate the working range of the card
53 for (loop
= 8; loop
< 24; loop
++) {
54 if (Ocr
& (1 << loop
)) {
55 if (minv
> volts
) minv
= volts
;
56 if (maxv
< volts
) maxv
= volts
+ 1;
61 DEBUG((EFI_D_ERROR
, "- PrintOCR Ocr (0x%X)\n",Ocr
));
62 DEBUG((EFI_D_ERROR
, "\t- Card operating voltage: %d.%d to %d.%d\n", minv
/10, minv
% 10, maxv
/10, maxv
% 10));
63 if (((Ocr
>> 29) & 3) == 0) {
64 DEBUG((EFI_D_ERROR
, "\t- AccessMode: Byte Mode\n"));
66 DEBUG((EFI_D_ERROR
, "\t- AccessMode: Block Mode (0x%X)\n",((Ocr
>> 29) & 3)));
69 if (Ocr
& MMC_OCR_POWERUP
) {
70 DEBUG((EFI_D_ERROR
, "\t- PowerUp\n"));
72 DEBUG((EFI_D_ERROR
, "\t- Voltage Not Supported\n"));
80 DEBUG((EFI_D_ERROR
, "- PrintCID\n"));
81 DEBUG((EFI_D_ERROR
, "\t- Manufacturing date: %d/%d\n",(Cid
[0] >> 8) & 0xF,(Cid
[0] >> 12) & 0xFF));
82 DEBUG((EFI_D_ERROR
, "\t- Product serial number: 0x%X%X\n",Cid
[1] & 0xFFFFFF,(Cid
[0] >> 24) & 0xFF));
83 DEBUG((EFI_D_ERROR
, "\t- Product revision: %d\n",Cid
[1] >> 24));
84 //DEBUG((EFI_D_ERROR, "\t- Product name: %s\n",(char*)(Cid + 2)));
85 DEBUG((EFI_D_ERROR
, "\t- OEM ID: %c%c\n",(Cid
[3] >> 8) & 0xFF,(Cid
[3] >> 16) & 0xFF));
88 #if !defined(MDEPKG_NDEBUG)
89 CONST CHAR8
* mStrUnit
[] = { "100kbit/s","1Mbit/s","10Mbit/s","100MBit/s","Unkbown","Unkbown","Unkbown","Unkbown" };
90 CONST CHAR8
* mStrValue
[] = { "1.0","1.2","1.3","1.5","2.0","2.5","3.0","3.5","4.0","4.5","5.0","Unknown","Unknown","Unknown","Unknown" };
100 if (((Csd
[2] >> 30) & 0x3) == 0) {
101 DEBUG((EFI_D_ERROR
, "- PrintCSD Version 1.01-1.10/Version 2.00/Standard Capacity\n"));
102 } else if (((Csd
[2] >> 30) & 0x3) == 1) {
103 DEBUG((EFI_D_ERROR
, "- PrintCSD Version 2.00/High Capacity\n"));
105 DEBUG((EFI_D_ERROR
, "- PrintCSD Version Higher than v3.3\n"));
108 DEBUG((EFI_D_ERROR
, "\t- Supported card command class: 0x%X\n",MMC_CSD_GET_CCC(Csd
)));
109 DEBUG((EFI_D_ERROR
, "\t- Speed: %a %a\n",mStrValue
[(MMC_CSD_GET_TRANSPEED(Csd
) >> 3) & 0xF],mStrUnit
[MMC_CSD_GET_TRANSPEED(Csd
) & 7]));
110 DEBUG((EFI_D_ERROR
, "\t- Maximum Read Data Block: %d\n",2 << (MMC_CSD_GET_READBLLEN(Csd
)-1)));
111 DEBUG((EFI_D_ERROR
, "\t- Maximum Write Data Block: %d\n",2 << (MMC_CSD_GET_WRITEBLLEN(Csd
)-1)));
113 if (!MMC_CSD_GET_FILEFORMATGRP(Csd
)) {
114 Value
= MMC_CSD_GET_FILEFORMAT(Csd
);
115 if (Value
== 0) DEBUG((EFI_D_ERROR
, "\t- Format(0): Hard disk-like file system with partition table\n"));
116 else if (Value
== 1) DEBUG((EFI_D_ERROR
, "\t- Format(1): DOS FAT (floppy-like) with boot sector only (no partition table)\n"));
117 else if (Value
== 2) DEBUG((EFI_D_ERROR
, "\t- Format(2): Universal File Format\n"));
118 else DEBUG((EFI_D_ERROR
, "\t- Format(3): Others/Unknown\n"));
120 DEBUG((EFI_D_ERROR
, "\t- Format: Reserved\n"));
129 DEBUG((EFI_D_ERROR
, "- PrintRCA: 0x%X\n",Rca
));
130 DEBUG((EFI_D_ERROR
, "\t- Status: 0x%X\n",Rca
& 0xFFFF));
131 DEBUG((EFI_D_ERROR
, "\t- RCA: 0x%X\n",(Rca
>> 16) & 0xFFFF));
139 DEBUG((EFI_D_INFO
, "Response: 0x%X\n",Response
));
140 if (Response
& MMC_R0_READY_FOR_DATA
) DEBUG((EFI_D_INFO
, "\t- READY_FOR_DATA\n"));
142 if (((Response
>> 9) & 0xF) == 0) DEBUG((EFI_D_INFO
, "\t- State: Idle\n"));
143 else if (((Response
>> 9) & 0xF) == 1) DEBUG((EFI_D_INFO
, "\t- State: Ready\n"));
144 else if (((Response
>> 9) & 0xF) == 2) DEBUG((EFI_D_INFO
, "\t- State: Ident\n"));
145 else if (((Response
>> 9) & 0xF) == 3) DEBUG((EFI_D_INFO
, "\t- State: StandBy\n"));
146 else if (((Response
>> 9) & 0xF) == 4) DEBUG((EFI_D_INFO
, "\t- State: Tran\n"));
147 else if (((Response
>> 9) & 0xF) == 5) DEBUG((EFI_D_INFO
, "\t- State: Data\n"));
148 else if (((Response
>> 9) & 0xF) == 6) DEBUG((EFI_D_INFO
, "\t- State: Rcv\n"));
149 else if (((Response
>> 9) & 0xF) == 7) DEBUG((EFI_D_INFO
, "\t- State: Prg\n"));
150 else if (((Response
>> 9) & 0xF) == 8) DEBUG((EFI_D_INFO
, "\t- State: Dis\n"));
151 else DEBUG((EFI_D_INFO
, "\t- State: Reserved\n"));
157 IN MMC_HOST_INSTANCE
*MmcHostInstance
163 EFI_MMC_HOST_PROTOCOL
*MmcHost
;
165 Status
= EFI_SUCCESS
;
166 MmcHost
= MmcHostInstance
->MmcHost
;
169 if (MmcHost
== NULL
) {
170 return EFI_INVALID_PARAMETER
;
172 if(MmcHostInstance
->State
!= MmcHwInitializationState
){
173 //Get the Status of the card.
174 CmdArg
= MmcHostInstance
->CardInfo
.RCA
<< 16;
175 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD13
, CmdArg
);
176 if (EFI_ERROR(Status
)) {
177 DEBUG((EFI_D_ERROR
, "MmcGetCardStatus(MMC_CMD13): Error and Status = %r\n", Status
));
182 MmcHost
->ReceiveResponse (MmcHost
, MMC_RESPONSE_TYPE_R1
,Response
);
183 PrintResponseR1(Response
[0]);
191 MmcIdentificationMode (
192 IN MMC_HOST_INSTANCE
*MmcHostInstance
200 EFI_MMC_HOST_PROTOCOL
*MmcHost
;
202 MmcHost
= MmcHostInstance
->MmcHost
;
206 if (MmcHost
== NULL
) {
207 return EFI_INVALID_PARAMETER
;
210 // We can get into this function if we restart the identification mode
211 if (MmcHostInstance
->State
== MmcHwInitializationState
) {
212 // Initialize the MMC Host HW
213 Status
= MmcNotifyState (MmcHostInstance
, MmcHwInitializationState
);
214 if (EFI_ERROR(Status
)) {
215 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode() : Error MmcHwInitializationState\n"));
219 //Note: Could even be used in all cases. But it looks this command could put the state machine into inactive for some cards
220 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD0
, 0);
221 if (EFI_ERROR(Status
)) {
222 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode(MMC_CMD0): Error\n"));
227 Status
= MmcNotifyState (MmcHostInstance
, MmcIdleState
);
228 if (EFI_ERROR(Status
)) {
229 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode() : Error MmcIdleState\n"));
233 // Are we using SDIO ?
234 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD5
, 0);
235 if (Status
== EFI_SUCCESS
) {
236 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode(MMC_CMD5): Error - SDIO not supported.\n"));
237 return EFI_UNSUPPORTED
;
240 // Check which kind of card we are using. Ver2.00 or later SD Memory Card (PL180 is SD v1.1)
241 CmdArg
= (0x0UL
<< 12 | BIT8
| 0xCEUL
<< 0);
242 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD8
, CmdArg
);
243 if (Status
== EFI_SUCCESS
) {
244 DEBUG ((EFI_D_ERROR
, "Card is SD2.0 => Supports high capacity\n"));
246 MmcHost
->ReceiveResponse (MmcHost
, MMC_RESPONSE_TYPE_R7
,Response
);
247 PrintResponseR1(Response
[0]);
248 //check if it is valid response
249 if(Response
[0] != CmdArg
){
250 DEBUG ((EFI_D_ERROR
, "The Card is not usable\n"));
251 return EFI_UNSUPPORTED
;
254 DEBUG ((EFI_D_ERROR
, "Not a SD2.0 Card\n"));
257 // We need to wait for the MMC or SD card is ready => (gCardInfo.OCRData.PowerUp == 1)
258 Timeout
= MAX_RETRY_COUNT
;
259 while (Timeout
> 0) {
260 // SD Card or MMC Card ? CMD55 indicates to the card that the next command is an application specific command
261 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD55
, 0);
262 if (Status
== EFI_SUCCESS
) {
263 DEBUG ((EFI_D_INFO
, "Card should be SD\n"));
265 MmcHostInstance
->CardInfo
.CardType
= SD_CARD_2
;
267 MmcHostInstance
->CardInfo
.CardType
= SD_CARD
;
270 // Note: The first time CmdArg will be zero
271 CmdArg
= ((UINTN
*) &(MmcHostInstance
->CardInfo
.OCRData
))[0];
275 Status
= MmcHost
->SendCommand (MmcHost
, MMC_ACMD41
, CmdArg
);
276 if (!EFI_ERROR(Status
)) {
277 MmcHost
->ReceiveResponse (MmcHost
, MMC_RESPONSE_TYPE_OCR
,Response
);
278 ((UINT32
*) &(MmcHostInstance
->CardInfo
.OCRData
))[0] = Response
[0];
281 DEBUG ((EFI_D_INFO
, "Card should be MMC\n"));
282 MmcHostInstance
->CardInfo
.CardType
= MMC_CARD
;
284 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD1
, 0x800000);
285 if (!EFI_ERROR(Status
)) {
286 MmcHost
->ReceiveResponse (MmcHost
, MMC_RESPONSE_TYPE_OCR
,Response
);
287 ((UINT32
*) &(MmcHostInstance
->CardInfo
.OCRData
))[0] = Response
[0];
291 if (!EFI_ERROR(Status
)) {
292 if (!MmcHostInstance
->CardInfo
.OCRData
.PowerUp
) {
296 if ((MmcHostInstance
->CardInfo
.CardType
== SD_CARD_2
) && (MmcHostInstance
->CardInfo
.OCRData
.AccessMode
& BIT1
)) {
297 MmcHostInstance
->CardInfo
.CardType
= SD_CARD_2_HIGH
;
298 DEBUG ((EFI_D_ERROR
, "High capacity card.\n"));
300 break; // The MMC/SD card is ready. Continue the Identification Mode
309 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode(): No Card\n"));
312 PrintOCR(Response
[0]);
315 Status
= MmcNotifyState (MmcHostInstance
, MmcReadyState
);
316 if (EFI_ERROR(Status
)) {
317 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode() : Error MmcReadyState\n"));
321 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD2
, 0);
322 if (EFI_ERROR(Status
)) {
323 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode(MMC_CMD2): Error\n"));
326 MmcHost
->ReceiveResponse (MmcHost
, MMC_RESPONSE_TYPE_CID
,Response
);
329 Status
= MmcNotifyState (MmcHostInstance
, MmcIdentificationState
);
330 if (EFI_ERROR(Status
)) {
331 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode() : Error MmcIdentificationState\n"));
336 // Note, SD specifications say that "if the command execution causes a state change, it
337 // will be visible to the host in the response to the next command"
338 // The status returned for this CMD3 will be 2 - identification
341 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD3
, CmdArg
);
342 if (EFI_ERROR(Status
)) {
343 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode(MMC_CMD3): Error\n"));
347 MmcHost
->ReceiveResponse (MmcHost
, MMC_RESPONSE_TYPE_RCA
,Response
);
348 PrintRCA(Response
[0]);
350 // For MMC card, RCA is assigned by CMD3 while CMD3 dumps the RCA for SD card
351 if (MmcHostInstance
->CardInfo
.CardType
!= MMC_CARD
) {
352 MmcHostInstance
->CardInfo
.RCA
= Response
[0] >> 16;
354 MmcHostInstance
->CardInfo
.RCA
= CmdArg
;
357 Status
= MmcNotifyState (MmcHostInstance
, MmcStandByState
);
358 if (EFI_ERROR(Status
)) {
359 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode() : Error MmcStandByState\n"));
366 EFI_STATUS
InitializeMmcDevice (
367 IN MMC_HOST_INSTANCE
*MmcHostInstance
372 UINTN CardSize
, NumBlocks
, BlockSize
, CmdArg
;
373 EFI_MMC_HOST_PROTOCOL
*MmcHost
;
374 UINTN BlockCount
= 1;
376 MmcHost
= MmcHostInstance
->MmcHost
;
378 MmcIdentificationMode (MmcHostInstance
);
380 //Send a command to get Card specific data
381 CmdArg
= MmcHostInstance
->CardInfo
.RCA
<< 16;
382 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD9
, CmdArg
);
383 if (EFI_ERROR(Status
)) {
384 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode(MMC_CMD9): Error, Status=%r\n", Status
));
388 MmcHost
->ReceiveResponse (MmcHost
, MMC_RESPONSE_TYPE_CSD
,Response
);
391 if (MmcHostInstance
->CardInfo
.CardType
== SD_CARD_2_HIGH
) {
392 CardSize
= HC_MMC_CSD_GET_DEVICESIZE(Response
);
393 NumBlocks
= ((CardSize
+ 1) * 1024);
394 BlockSize
= 1 << MMC_CSD_GET_READBLLEN(Response
);
396 CardSize
= MMC_CSD_GET_DEVICESIZE(Response
);
397 NumBlocks
= (CardSize
+ 1) * (1 << (MMC_CSD_GET_DEVICESIZEMULT(Response
) + 2));
398 BlockSize
= 1 << MMC_CSD_GET_READBLLEN(Response
);
401 //For >=2G card, BlockSize may be 1K, but the transfer size is 512 bytes.
402 if (BlockSize
> 512) {
403 NumBlocks
= MultU64x32(NumBlocks
, BlockSize
/512);
407 MmcHostInstance
->BlockIo
.Media
->LastBlock
= (NumBlocks
- 1);
408 MmcHostInstance
->BlockIo
.Media
->BlockSize
= BlockSize
;
409 MmcHostInstance
->BlockIo
.Media
->ReadOnly
= MmcHost
->IsReadOnly (MmcHost
);
410 MmcHostInstance
->BlockIo
.Media
->MediaPresent
= TRUE
;
411 MmcHostInstance
->BlockIo
.Media
->MediaId
++;
413 CmdArg
= MmcHostInstance
->CardInfo
.RCA
<< 16;
414 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD7
, CmdArg
);
415 if (EFI_ERROR(Status
)) {
416 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode(MMC_CMD7): Error and Status = %r\n", Status
));
420 Status
= MmcNotifyState (MmcHostInstance
, MmcTransferState
);
421 if (EFI_ERROR(Status
)) {
422 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode() : Error MmcTransferState\n"));
427 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD16
, MmcHostInstance
->BlockIo
.Media
->BlockSize
);
428 if (EFI_ERROR(Status
)) {
429 DEBUG((EFI_D_ERROR
, "MmcIdentificationMode(MMC_CMD16): Error MmcHostInstance->BlockIo.Media->BlockSize: %d and Error = %r\n",MmcHostInstance
->BlockIo
.Media
->BlockSize
, Status
));
433 // Block Count (not used). Could return an error for SD card
434 if (MmcHostInstance
->CardInfo
.CardType
== MMC_CARD
) {
435 MmcHost
->SendCommand (MmcHost
, MMC_CMD23
, BlockCount
);
444 IN EFI_BLOCK_IO_PROTOCOL
*This
,
445 IN BOOLEAN ExtendedVerification
448 MMC_HOST_INSTANCE
*MmcHostInstance
;
450 MmcHostInstance
= MMC_HOST_INSTANCE_FROM_BLOCK_IO_THIS(This
);
452 if (MmcHostInstance
->MmcHost
== NULL
) {
457 // If a card is not present then clear all media settings
458 if (!MmcHostInstance
->MmcHost
->IsCardPresent (MmcHostInstance
->MmcHost
)) {
459 MmcHostInstance
->BlockIo
.Media
->MediaPresent
= FALSE
;
460 MmcHostInstance
->BlockIo
.Media
->LastBlock
= 0;
461 MmcHostInstance
->BlockIo
.Media
->BlockSize
= 512; // Should be zero but there is a bug in DiskIo
462 MmcHostInstance
->BlockIo
.Media
->ReadOnly
= FALSE
;
464 // Indicate that the driver requires initialization
465 MmcHostInstance
->State
= MmcHwInitializationState
;
470 // Implement me. Either send a CMD0 (could not work for some MMC host) or just turn off/turn
471 // on power and restart Identification mode
477 EFI_MMC_HOST_PROTOCOL
*MmcHost
480 if (!MmcHost
->IsCardPresent (MmcHost
)) {
487 #define MMCI0_BLOCKLEN 512
488 #define MMCI0_TIMEOUT 10000
492 IN EFI_BLOCK_IO_PROTOCOL
*This
,
505 MMC_HOST_INSTANCE
*MmcHostInstance
;
506 EFI_MMC_HOST_PROTOCOL
*MmcHost
;
507 UINTN BytesRemainingToBeTransfered
;
508 UINTN BlockCount
= 1;
510 MmcHostInstance
= MMC_HOST_INSTANCE_FROM_BLOCK_IO_THIS(This
);
511 ASSERT(MmcHostInstance
!= 0);
512 MmcHost
= MmcHostInstance
->MmcHost
;
515 if ((MmcHost
== 0)|| (Buffer
== NULL
)) {
516 return EFI_INVALID_PARAMETER
;
519 // Check if a Card is Present
520 if (!MmcHostInstance
->BlockIo
.Media
->MediaPresent
) {
524 // All blocks must be within the device
525 if ((Lba
+ (BufferSize
/ This
->Media
->BlockSize
)) > (This
->Media
->LastBlock
+ 1)){
526 return EFI_INVALID_PARAMETER
;
529 // The buffer size must not be zero and it must be an exact multiple of the block size
530 if ((BufferSize
== 0) || ((BufferSize
% This
->Media
->BlockSize
) != 0)) {
531 return EFI_BAD_BUFFER_SIZE
;
534 if (This
->Media
->MediaId
!= MediaId
) {
535 return EFI_MEDIA_CHANGED
;
538 if((Transfer
== MMC_IOBLOCKS_WRITE
) && (This
->Media
->ReadOnly
== TRUE
)) {
539 return EFI_WRITE_PROTECTED
;
542 BytesRemainingToBeTransfered
= BufferSize
;
543 while (BytesRemainingToBeTransfered
> 0) {
545 // Check if the Card is in Ready status
546 CmdArg
= MmcHostInstance
->CardInfo
.RCA
<< 16;
549 while( (!(Response
[0] & MMC_R0_READY_FOR_DATA
))
550 && (MMC_R0_CURRENTSTATE(Response
) != MMC_R0_STATE_TRAN
)
552 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD13
, CmdArg
);
553 if (!EFI_ERROR(Status
)) {
554 MmcHost
->ReceiveResponse (MmcHost
, MMC_RESPONSE_TYPE_R1
,Response
);
559 DEBUG((EFI_D_ERROR
, "The Card is busy\n"));
560 return EFI_NOT_READY
;
563 //Set command argument based on the card access mode (Byte mode or Block mode)
564 if (MmcHostInstance
->CardInfo
.OCRData
.AccessMode
& BIT1
) {
567 CmdArg
= Lba
* This
->Media
->BlockSize
;
570 if (Transfer
== MMC_IOBLOCKS_READ
) {
572 // Read a single block
575 //TODO: Should we support read stream (MMC_CMD11)
579 // Write a single block
582 //TODO: Should we support write stream (MMC_CMD20)
585 Status
= MmcHost
->SendCommand (MmcHost
, Cmd
, CmdArg
);
586 if (EFI_ERROR(Status
)) {
587 DEBUG((EFI_D_ERROR
, "MmcIoBlocks(MMC_CMD%d): Error %r\n",Cmd
, Status
));
591 if (Transfer
== MMC_IOBLOCKS_READ
) {
593 // Read one block of Data
594 Status
= MmcHost
->ReadBlockData (MmcHost
, Lba
,This
->Media
->BlockSize
,Buffer
);
595 if (EFI_ERROR(Status
)) {
596 DEBUG((EFI_D_BLKIO
, "MmcIoBlocks(): Error Read Block Data and Status = %r\n", Status
));
600 //TODO: Read a stream
603 Status
= MmcNotifyState (MmcHostInstance
, MmcProgrammingState
);
604 if (EFI_ERROR(Status
)) {
605 DEBUG((EFI_D_ERROR
, "MmcIoBlocks() : Error MmcProgrammingState\n"));
610 // Write one block of Data
611 Status
= MmcHost
->WriteBlockData (MmcHost
, Lba
,This
->Media
->BlockSize
,Buffer
);
612 if (EFI_ERROR(Status
)) {
613 DEBUG((EFI_D_BLKIO
, "MmcIoBlocks(): Error Write Block Data and Status = %r\n", Status
));
617 //TODO: Write a stream
622 // Command 12 - Stop transmission (ends read)
623 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD12
, 0);
624 if (!EFI_ERROR(Status
)) {
625 MmcHost
->ReceiveResponse (MmcHost
, MMC_RESPONSE_TYPE_R1b
,Response
);
628 // Command 13 - Read status and wait for programming to complete (return to tran)
629 Timeout
= MMCI0_TIMEOUT
;
630 CmdArg
= MmcHostInstance
->CardInfo
.RCA
<< 16;
632 while( (!(Response
[0] & MMC_R0_READY_FOR_DATA
))
633 && (MMC_R0_CURRENTSTATE(Response
) != MMC_R0_STATE_TRAN
)
635 Status
= MmcHost
->SendCommand (MmcHost
, MMC_CMD13
, CmdArg
);
636 if (!EFI_ERROR(Status
)) {
637 MmcHost
->ReceiveResponse (MmcHost
, MMC_RESPONSE_TYPE_R1
, Response
);
638 if ((Response
[0] & MMC_R0_READY_FOR_DATA
)) {
639 break; // Prevents delay once finished
642 NanoSecondDelay(100);
645 Status
= MmcNotifyState (MmcHostInstance
, MmcTransferState
);
646 if (EFI_ERROR(Status
)) {
647 DEBUG((EFI_D_ERROR
, "MmcIoBlocks() : Error MmcTransferState\n"));
651 BytesRemainingToBeTransfered
-= This
->Media
->BlockSize
;
653 Buffer
= (UINT8
*)Buffer
+ This
->Media
->BlockSize
;
662 IN EFI_BLOCK_IO_PROTOCOL
*This
,
669 return MmcIoBlocks (This
, MMC_IOBLOCKS_READ
, MediaId
, Lba
, BufferSize
, Buffer
);
675 IN EFI_BLOCK_IO_PROTOCOL
*This
,
682 return MmcIoBlocks (This
, MMC_IOBLOCKS_WRITE
, MediaId
, Lba
, BufferSize
, Buffer
);
688 IN EFI_BLOCK_IO_PROTOCOL
*This