MmcBlockIo.c 22 KB

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  1. /** @file
  2. *
  3. * Copyright (c) 2011, ARM Limited. All rights reserved.
  4. *
  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
  9. *
  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.
  12. *
  13. **/
  14. #include <Protocol/MmcHost.h>
  15. #include <Library/DebugLib.h>
  16. #include <Library/BaseMemoryLib.h>
  17. #include <Library/TimerLib.h>
  18. #include "Mmc.h"
  19. // Untested ...
  20. //#define USE_STREAM
  21. #define MAX_RETRY_COUNT 1000
  22. #define CMD_RETRY_COUNT 20
  23. EFI_STATUS
  24. MmcNotifyState (
  25. IN MMC_HOST_INSTANCE *MmcHostInstance,
  26. IN MMC_STATE State
  27. )
  28. {
  29. MmcHostInstance->State = State;
  30. return MmcHostInstance->MmcHost->NotifyState(State);
  31. }
  32. VOID
  33. PrintOCR (
  34. IN UINT32 Ocr
  35. )
  36. {
  37. UINTN minv, maxv, volts;
  38. UINTN loop;
  39. minv = 36; // 3.6
  40. maxv = 20; // 2.0
  41. volts = 20; // 2.0
  42. // The MMC register bits [23:8] indicate the working range of the card
  43. for (loop = 8; loop < 24; loop++) {
  44. if (Ocr & (1 << loop)) {
  45. if (minv > volts) minv = volts;
  46. if (maxv < volts) maxv = volts + 1;
  47. }
  48. volts = volts + 1;
  49. }
  50. DEBUG((EFI_D_ERROR, "- PrintOCR Ocr (0x%X)\n",Ocr));
  51. DEBUG((EFI_D_ERROR, "\t- Card operating voltage: %d.%d to %d.%d\n", minv/10, minv % 10, maxv/10, maxv % 10));
  52. if (((Ocr >> 29) & 3) == 0) {
  53. DEBUG((EFI_D_ERROR, "\t- AccessMode: Byte Mode\n"));
  54. } else {
  55. DEBUG((EFI_D_ERROR, "\t- AccessMode: Block Mode (0x%X)\n",((Ocr >> 29) & 3)));
  56. }
  57. if (Ocr & MMC_OCR_POWERUP) {
  58. DEBUG((EFI_D_ERROR, "\t- PowerUp\n"));
  59. } else {
  60. DEBUG((EFI_D_ERROR, "\t- Voltage Not Supported\n"));
  61. }
  62. }
  63. VOID PrintCID (
  64. IN UINT32* Cid
  65. )
  66. {
  67. DEBUG((EFI_D_ERROR, "- PrintCID\n"));
  68. DEBUG((EFI_D_ERROR, "\t- Manufacturing date: %d/%d\n",(Cid[0] >> 8) & 0xF,(Cid[0] >> 12) & 0xFF));
  69. DEBUG((EFI_D_ERROR, "\t- Product serial number: 0x%X%X\n",Cid[1] & 0xFFFFFF,(Cid[0] >> 24) & 0xFF));
  70. DEBUG((EFI_D_ERROR, "\t- Product revision: %d\n",Cid[1] >> 24));
  71. //DEBUG((EFI_D_ERROR, "\t- Product name: %s\n",(char*)(Cid + 2)));
  72. DEBUG((EFI_D_ERROR, "\t- OEM ID: %c%c\n",(Cid[3] >> 8) & 0xFF,(Cid[3] >> 16) & 0xFF));
  73. }
  74. VOID
  75. PrintCSD (
  76. IN UINT32* Csd
  77. )
  78. {
  79. UINTN Value;
  80. #if !defined(MDEPKG_NDEBUG)
  81. CONST CHAR8* str_unit[] = { "100kbit/s","1Mbit/s","10Mbit/s","100MBit/s","Unkbown","Unkbown","Unkbown","Unkbown" };
  82. CONST CHAR8* str_value[] = { "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" };
  83. #endif
  84. if (((Csd[2] >> 30) & 0x3) == 0) {
  85. DEBUG((EFI_D_ERROR, "- PrintCSD Version 1.01-1.10/Version 2.00/Standard Capacity\n"));
  86. } else if (((Csd[2] >> 30) & 0x3) == 1) {
  87. DEBUG((EFI_D_ERROR, "- PrintCSD Version 2.00/High Capacity\n"));
  88. } else {
  89. DEBUG((EFI_D_ERROR, "- PrintCSD Version Higher than v3.3\n"));
  90. }
  91. DEBUG((EFI_D_ERROR, "\t- Supported card command class: 0x%X\n",MMC_CSD_GET_CCC(Csd)));
  92. DEBUG((EFI_D_ERROR, "\t- Speed: %a %a\n",str_value[(MMC_CSD_GET_TRANSPEED(Csd) >> 3) & 0xF],str_unit[MMC_CSD_GET_TRANSPEED(Csd) & 7]));
  93. DEBUG((EFI_D_ERROR, "\t- Maximum Read Data Block: %d\n",2 << (MMC_CSD_GET_READBLLEN(Csd)-1)));
  94. DEBUG((EFI_D_ERROR, "\t- Maximum Write Data Block: %d\n",2 << (MMC_CSD_GET_WRITEBLLEN(Csd)-1)));
  95. if (!MMC_CSD_GET_FILEFORMATGRP(Csd)) {
  96. Value = MMC_CSD_GET_FILEFORMAT(Csd);
  97. if (Value == 0) DEBUG((EFI_D_ERROR, "\t- Format(0): Hard disk-like file system with partition table\n"));
  98. else if (Value == 1) DEBUG((EFI_D_ERROR, "\t- Format(1): DOS FAT (floppy-like) with boot sector only (no partition table)\n"));
  99. else if (Value == 2) DEBUG((EFI_D_ERROR, "\t- Format(2): Universal File Format\n"));
  100. else DEBUG((EFI_D_ERROR, "\t- Format(3): Others/Unknown\n"));
  101. } else {
  102. DEBUG((EFI_D_ERROR, "\t- Format: Reserved\n"));
  103. }
  104. }
  105. VOID
  106. PrintRCA (
  107. IN UINT32 Rca
  108. )
  109. {
  110. DEBUG((EFI_D_ERROR, "- PrintRCA: 0x%X\n",Rca));
  111. DEBUG((EFI_D_ERROR, "\t- Status: 0x%X\n",Rca & 0xFFFF));
  112. DEBUG((EFI_D_ERROR, "\t- RCA: 0x%X\n",(Rca >> 16) & 0xFFFF));
  113. }
  114. VOID
  115. PrintResponseR1 (
  116. IN UINT32 Response
  117. )
  118. {
  119. DEBUG((EFI_D_INFO, "Response: 0x%X\n",Response));
  120. if (Response & (1 << 8)) DEBUG((EFI_D_INFO, "\t- READY_FOR_DATA\n"));
  121. if (((Response >> 9) & 0xF) == 0) DEBUG((EFI_D_INFO, "\t- State: Idle\n"));
  122. else if (((Response >> 9) & 0xF) == 1) DEBUG((EFI_D_INFO, "\t- State: Ready\n"));
  123. else if (((Response >> 9) & 0xF) == 2) DEBUG((EFI_D_INFO, "\t- State: Ident\n"));
  124. else if (((Response >> 9) & 0xF) == 3) DEBUG((EFI_D_INFO, "\t- State: StandBy\n"));
  125. else if (((Response >> 9) & 0xF) == 4) DEBUG((EFI_D_INFO, "\t- State: Tran\n"));
  126. else if (((Response >> 9) & 0xF) == 5) DEBUG((EFI_D_INFO, "\t- State: Data\n"));
  127. else if (((Response >> 9) & 0xF) == 6) DEBUG((EFI_D_INFO, "\t- State: Rcv\n"));
  128. else if (((Response >> 9) & 0xF) == 7) DEBUG((EFI_D_INFO, "\t- State: Prg\n"));
  129. else if (((Response >> 9) & 0xF) == 8) DEBUG((EFI_D_INFO, "\t- State: Dis\n"));
  130. else DEBUG((EFI_D_INFO, "\t- State: Reserved\n"));
  131. }
  132. EFI_STATUS
  133. EFIAPI
  134. MmcGetCardStatus(
  135. IN MMC_HOST_INSTANCE *MmcHostInstance
  136. )
  137. {
  138. EFI_STATUS Status;
  139. UINT32 Response[4];
  140. UINTN CmdArg;
  141. EFI_MMC_HOST_PROTOCOL *MmcHost;
  142. Status = EFI_SUCCESS;
  143. MmcHost = MmcHostInstance->MmcHost;
  144. CmdArg = 0;
  145. if (MmcHost == NULL) {
  146. return EFI_INVALID_PARAMETER;
  147. }
  148. if(MmcHostInstance->State != MmcHwInitializationState){
  149. //Get the Status of the card.
  150. CmdArg = MmcHostInstance->CardInfo.RCA << 16;
  151. Status = MmcHost->SendCommand(MMC_CMD13, CmdArg);
  152. if (EFI_ERROR(Status)) {
  153. DEBUG((EFI_D_ERROR, "MmcGetCardStatus(MMC_CMD13): Error and Status = %r\n", Status));
  154. return Status;
  155. }
  156. //Read Response
  157. MmcHost->ReceiveResponse(MMC_RESPONSE_TYPE_R1,Response);
  158. PrintResponseR1(Response[0]);
  159. }
  160. return Status;
  161. }
  162. EFI_STATUS
  163. EFIAPI
  164. MmcIdentificationMode (
  165. IN MMC_HOST_INSTANCE *MmcHostInstance
  166. )
  167. {
  168. EFI_STATUS Status;
  169. UINT32 Response[4];
  170. UINTN Timeout;
  171. UINTN CmdArg;
  172. BOOLEAN IsHCS;
  173. EFI_MMC_HOST_PROTOCOL *MmcHost;
  174. MmcHost = MmcHostInstance->MmcHost;
  175. CmdArg = 0;
  176. IsHCS = FALSE;
  177. if (MmcHost == NULL) {
  178. return EFI_INVALID_PARAMETER;
  179. }
  180. // We can get into this function if we restart the identification mode
  181. if (MmcHostInstance->State == MmcHwInitializationState) {
  182. // Initialize the MMC Host HW
  183. Status = MmcNotifyState (MmcHostInstance, MmcHwInitializationState);
  184. if (EFI_ERROR(Status)) {
  185. DEBUG((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcHwInitializationState\n"));
  186. return Status;
  187. }
  188. } else {
  189. //Note: Could even be used in all cases. But it looks this command could put the state machine into inactive for some cards
  190. Status = MmcHost->SendCommand(MMC_CMD0, 0);
  191. if (EFI_ERROR(Status)) {
  192. DEBUG((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD0): Error\n"));
  193. return Status;
  194. }
  195. }
  196. Status = MmcNotifyState (MmcHostInstance, MmcIdleState);
  197. if (EFI_ERROR(Status)) {
  198. DEBUG((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcIdleState\n"));
  199. return Status;
  200. }
  201. // Are we using SDIO ?
  202. Status = MmcHost->SendCommand(MMC_CMD5, 0);
  203. if (Status == EFI_SUCCESS) {
  204. DEBUG((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD5): Error - SDIO not supported.\n"));
  205. return EFI_UNSUPPORTED;
  206. }
  207. // Check which kind of card we are using. Ver2.00 or later SD Memory Card (PL180 is SD v1.1)
  208. CmdArg = (0x0UL << 12 | BIT8 | 0xCEUL << 0);
  209. Status = MmcHost->SendCommand(MMC_CMD8, CmdArg);
  210. if (Status == EFI_SUCCESS) {
  211. DEBUG ((EFI_D_ERROR, "Card is SD2.0 => Supports high capacity\n"));
  212. IsHCS = TRUE;
  213. MmcHost->ReceiveResponse(MMC_RESPONSE_TYPE_R7,Response);
  214. PrintResponseR1(Response[0]);
  215. //check if it is valid response
  216. if(Response[0] != CmdArg){
  217. DEBUG ((EFI_D_ERROR, "The Card is not usable\n"));
  218. return EFI_UNSUPPORTED;
  219. }
  220. } else {
  221. DEBUG ((EFI_D_ERROR, "Not a SD2.0 Card\n"));
  222. }
  223. // We need to wait for the MMC or SD card is ready => (gCardInfo.OCRData.Busy == 1)
  224. Timeout = MAX_RETRY_COUNT;
  225. while (Timeout > 0) {
  226. // SD Card or MMC Card ? CMD55 indicates to the card that the next command is an application specific command
  227. Status = MmcHost->SendCommand(MMC_CMD55, 0);
  228. if (Status == EFI_SUCCESS) {
  229. DEBUG ((EFI_D_INFO, "Card should be SD\n"));
  230. if (IsHCS) {
  231. MmcHostInstance->CardInfo.CardType = SD_CARD_2;
  232. } else {
  233. MmcHostInstance->CardInfo.CardType = SD_CARD;
  234. }
  235. // Note: The first time CmdArg will be zero
  236. CmdArg = ((UINTN *) &(MmcHostInstance->CardInfo.OCRData))[0];
  237. if (IsHCS) {
  238. CmdArg |= BIT30;
  239. }
  240. Status = MmcHost->SendCommand(MMC_ACMD41, CmdArg);
  241. if (!EFI_ERROR(Status)) {
  242. MmcHost->ReceiveResponse(MMC_RESPONSE_TYPE_OCR,Response);
  243. ((UINT32 *) &(MmcHostInstance->CardInfo.OCRData))[0] = Response[0];
  244. }
  245. } else {
  246. DEBUG ((EFI_D_INFO, "Card should be MMC\n"));
  247. MmcHostInstance->CardInfo.CardType = MMC_CARD;
  248. Status = MmcHost->SendCommand(MMC_CMD1, 0x800000);
  249. if (!EFI_ERROR(Status)) {
  250. MmcHost->ReceiveResponse(MMC_RESPONSE_TYPE_OCR,Response);
  251. ((UINT32 *) &(MmcHostInstance->CardInfo.OCRData))[0] = Response[0];
  252. }
  253. }
  254. if (!EFI_ERROR(Status)) {
  255. if (MmcHostInstance->CardInfo.OCRData.Busy == 0) {
  256. MicroSecondDelay(1);
  257. Timeout--;
  258. } else {
  259. if ((MmcHostInstance->CardInfo.CardType == SD_CARD_2) && (MmcHostInstance->CardInfo.OCRData.AccessMode & BIT1)) {
  260. MmcHostInstance->CardInfo.CardType = SD_CARD_2_HIGH;
  261. DEBUG ((EFI_D_ERROR, "High capacity card.\n"));
  262. }
  263. break; // The MMC/SD card is ready. Continue the Identification Mode
  264. }
  265. } else {
  266. MicroSecondDelay(1);
  267. Timeout--;
  268. }
  269. }
  270. if (Timeout == 0) {
  271. DEBUG((EFI_D_ERROR, "MmcIdentificationMode(): No Card\n"));
  272. return EFI_NO_MEDIA;
  273. } else {
  274. PrintOCR(Response[0]);
  275. }
  276. Status = MmcNotifyState (MmcHostInstance, MmcReadyState);
  277. if (EFI_ERROR(Status)) {
  278. DEBUG((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcReadyState\n"));
  279. return Status;
  280. }
  281. Status = MmcHost->SendCommand(MMC_CMD2, 0);
  282. if (EFI_ERROR(Status)) {
  283. DEBUG((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD2): Error\n"));
  284. return Status;
  285. }
  286. MmcHost->ReceiveResponse(MMC_RESPONSE_TYPE_CID,Response);
  287. PrintCID(Response);
  288. Status = MmcNotifyState (MmcHostInstance, MmcIdentificationState);
  289. if (EFI_ERROR(Status)) {
  290. DEBUG((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcIdentificationState\n"));
  291. return Status;
  292. }
  293. //
  294. // Note, SD specifications say that "if the command execution causes a state change, it
  295. // will be visible to the host in the response to the next command"
  296. // The status returned for this CMD3 will be 2 - identification
  297. //
  298. CmdArg = 1;
  299. Status = MmcHost->SendCommand(MMC_CMD3, CmdArg);
  300. if (EFI_ERROR(Status)) {
  301. DEBUG((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD3): Error\n"));
  302. return Status;
  303. }
  304. MmcHost->ReceiveResponse(MMC_RESPONSE_TYPE_RCA,Response);
  305. PrintRCA(Response[0]);
  306. // For MMC card, RCA is assigned by CMD3 while CMD3 dumps the RCA for SD card
  307. if (MmcHostInstance->CardInfo.CardType != MMC_CARD) {
  308. MmcHostInstance->CardInfo.RCA = Response[0] >> 16;
  309. } else {
  310. MmcHostInstance->CardInfo.RCA = CmdArg;
  311. }
  312. Status = MmcNotifyState (MmcHostInstance, MmcStandByState);
  313. if (EFI_ERROR(Status)) {
  314. DEBUG((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcStandByState\n"));
  315. return Status;
  316. }
  317. return EFI_SUCCESS;
  318. }
  319. EFI_STATUS InitializeMmcDevice(
  320. IN MMC_HOST_INSTANCE *MmcHostInstance
  321. )
  322. {
  323. UINT32 Response[4];
  324. EFI_STATUS Status;
  325. UINTN CardSize, NumBlocks, BlockSize, CmdArg;
  326. EFI_MMC_HOST_PROTOCOL *MmcHost;
  327. UINTN BlockCount = 1;
  328. MmcHost = MmcHostInstance->MmcHost;
  329. MmcIdentificationMode (MmcHostInstance);
  330. //Send a command to get Card specific data
  331. CmdArg = MmcHostInstance->CardInfo.RCA << 16;
  332. Status = MmcHost->SendCommand(MMC_CMD9, CmdArg);
  333. if (EFI_ERROR(Status)) {
  334. DEBUG((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD9): Error, Status=%r\n", Status));
  335. return Status;
  336. }
  337. //Read Response
  338. MmcHost->ReceiveResponse(MMC_RESPONSE_TYPE_CSD,Response);
  339. PrintCSD(Response);
  340. if (MmcHostInstance->CardInfo.CardType == SD_CARD_2_HIGH) {
  341. CardSize = HC_MMC_CSD_GET_DEVICESIZE(Response);
  342. NumBlocks = ((CardSize + 1) * 1024);
  343. BlockSize = 1 << MMC_CSD_GET_READBLLEN(Response);
  344. } else {
  345. CardSize = MMC_CSD_GET_DEVICESIZE(Response);
  346. NumBlocks = (CardSize + 1) * (1 << (MMC_CSD_GET_DEVICESIZEMULT(Response) + 2));
  347. BlockSize = 1 << MMC_CSD_GET_READBLLEN(Response);
  348. }
  349. //For >=2G card, BlockSize may be 1K, but the transfer size is 512 bytes.
  350. if (BlockSize > 512) {
  351. NumBlocks = MultU64x32(NumBlocks, BlockSize/512);
  352. BlockSize = 512;
  353. }
  354. MmcHostInstance->BlockIo.Media->LastBlock = (NumBlocks - 1);
  355. MmcHostInstance->BlockIo.Media->BlockSize = BlockSize;
  356. MmcHostInstance->BlockIo.Media->ReadOnly = MmcHost->IsReadOnly();
  357. MmcHostInstance->BlockIo.Media->MediaPresent = TRUE;
  358. MmcHostInstance->BlockIo.Media->MediaId++;
  359. CmdArg = MmcHostInstance->CardInfo.RCA << 16;
  360. Status = MmcHost->SendCommand(MMC_CMD7, CmdArg);
  361. if (EFI_ERROR(Status)) {
  362. DEBUG((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD7): Error and Status = %r\n", Status));
  363. return Status;
  364. }
  365. Status = MmcNotifyState (MmcHostInstance, MmcTransferState);
  366. if (EFI_ERROR(Status)) {
  367. DEBUG((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcTransferState\n"));
  368. return Status;
  369. }
  370. // Set Block Length
  371. Status = MmcHost->SendCommand(MMC_CMD16, MmcHostInstance->BlockIo.Media->BlockSize);
  372. if (EFI_ERROR(Status)) {
  373. DEBUG((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD16): Error MmcHostInstance->BlockIo.Media->BlockSize: %d and Error = %r\n",MmcHostInstance->BlockIo.Media->BlockSize, Status));
  374. return Status;
  375. }
  376. // Block Count (not used). Could return an error for SD card
  377. if (MmcHostInstance->CardInfo.CardType == MMC_CARD) {
  378. MmcHost->SendCommand(MMC_CMD23, BlockCount);
  379. }
  380. return EFI_SUCCESS;
  381. }
  382. EFI_STATUS
  383. EFIAPI
  384. MmcReset (
  385. IN EFI_BLOCK_IO_PROTOCOL *This,
  386. IN BOOLEAN ExtendedVerification
  387. )
  388. {
  389. MMC_HOST_INSTANCE *MmcHostInstance;
  390. MmcHostInstance = MMC_HOST_INSTANCE_FROM_BLOCK_IO_THIS(This);
  391. if (MmcHostInstance->MmcHost == NULL) {
  392. // Nothing to do
  393. return EFI_SUCCESS;
  394. }
  395. // If a card is not present then clear all media settings
  396. if (!MmcHostInstance->MmcHost->IsCardPresent()) {
  397. MmcHostInstance->BlockIo.Media->MediaPresent = FALSE;
  398. MmcHostInstance->BlockIo.Media->LastBlock = 0;
  399. MmcHostInstance->BlockIo.Media->BlockSize = 512; // Should be zero but there is a bug in DiskIo
  400. MmcHostInstance->BlockIo.Media->ReadOnly = FALSE;
  401. // Indicate that the driver requires initialization
  402. MmcHostInstance->State = MmcHwInitializationState;
  403. return EFI_SUCCESS;
  404. }
  405. // Implement me. Either send a CMD0 (could not work for some MMC host) or just turn off/turn
  406. // on power and restart Identification mode
  407. return EFI_SUCCESS;
  408. }
  409. EFI_STATUS
  410. MmcDetectCard (
  411. EFI_MMC_HOST_PROTOCOL *MmcHost
  412. )
  413. {
  414. if (!MmcHost->IsCardPresent()) {
  415. return EFI_NO_MEDIA;
  416. } else {
  417. return EFI_SUCCESS;
  418. }
  419. }
  420. #define MMCI0_BLOCKLEN 512
  421. #define MMCI0_TIMEOUT 10000
  422. EFI_STATUS
  423. MmcIoBlocks (
  424. IN EFI_BLOCK_IO_PROTOCOL *This,
  425. IN UINTN Transfer,
  426. IN UINT32 MediaId,
  427. IN EFI_LBA Lba,
  428. IN UINTN BufferSize,
  429. OUT VOID *Buffer
  430. )
  431. {
  432. UINT32 Response[4];
  433. EFI_STATUS Status;
  434. UINTN CmdArg;
  435. INTN Timeout;
  436. UINTN Cmd;
  437. MMC_HOST_INSTANCE *MmcHostInstance;
  438. EFI_MMC_HOST_PROTOCOL *MmcHost;
  439. UINTN BytesRemainingToBeTransfered;
  440. UINTN BlockCount = 1;
  441. MmcHostInstance = MMC_HOST_INSTANCE_FROM_BLOCK_IO_THIS(This);
  442. ASSERT(MmcHostInstance != 0);
  443. MmcHost = MmcHostInstance->MmcHost;
  444. ASSERT(MmcHost);
  445. if ((MmcHost == 0)|| (Buffer == NULL)) {
  446. return EFI_INVALID_PARAMETER;
  447. }
  448. // Check if a Card is Present
  449. if (!MmcHostInstance->BlockIo.Media->MediaPresent) {
  450. return EFI_NO_MEDIA;
  451. }
  452. // All blocks must be within the device
  453. if ((Lba + (BufferSize / This->Media->BlockSize)) > (This->Media->LastBlock + 1)){
  454. return EFI_INVALID_PARAMETER;
  455. }
  456. // The buffer size must not be zero and it must be an exact multiple of the block size
  457. if ((BufferSize == 0) || ((BufferSize % This->Media->BlockSize) != 0)) {
  458. return EFI_BAD_BUFFER_SIZE;
  459. }
  460. if (This->Media->MediaId != MediaId) {
  461. return EFI_MEDIA_CHANGED;
  462. }
  463. if((Transfer == MMC_IOBLOCKS_WRITE) && (This->Media->ReadOnly == TRUE)) {
  464. return EFI_WRITE_PROTECTED;
  465. }
  466. BytesRemainingToBeTransfered = BufferSize;
  467. while (BytesRemainingToBeTransfered > 0) {
  468. // Check if the Card is in Ready status
  469. CmdArg = MmcHostInstance->CardInfo.RCA << 16;
  470. Response[0] = 0;
  471. Timeout = 20;
  472. while(!(Response[0] & MMC_R0_READY_FOR_DATA) && (MMC_R0_CURRENTSTATE(Response) != MMC_R0_STATE_TRAN) && Timeout--) {
  473. Status = MmcHost->SendCommand(MMC_CMD13, CmdArg);
  474. if (!EFI_ERROR(Status)) {
  475. MmcHost->ReceiveResponse(MMC_RESPONSE_TYPE_R1,Response);
  476. }
  477. }
  478. if (0 == Timeout) {
  479. DEBUG((EFI_D_ERROR, "The Card is busy\n"));
  480. return EFI_NOT_READY;
  481. }
  482. //Set command argument based on the card access mode (Byte mode or Block mode)
  483. if (MmcHostInstance->CardInfo.OCRData.AccessMode & BIT1) {
  484. CmdArg = Lba;
  485. } else {
  486. CmdArg = Lba * This->Media->BlockSize;
  487. }
  488. if (Transfer == MMC_IOBLOCKS_READ) {
  489. #ifndef USE_STREAM
  490. // Read a single block
  491. Cmd = MMC_CMD17;
  492. #else
  493. //TODO: Should we support read stream (MMC_CMD11)
  494. #endif
  495. } else {
  496. #ifndef USE_STREAM
  497. // Write a single block
  498. Cmd = MMC_CMD24;
  499. #else
  500. //TODO: Should we support write stream (MMC_CMD20)
  501. #endif
  502. }
  503. Status = MmcHost->SendCommand(Cmd, CmdArg);
  504. if (EFI_ERROR(Status)) {
  505. DEBUG((EFI_D_ERROR, "MmcIdentificationMode(MMC_CMD%d): Error %r\n",Cmd, Status));
  506. return Status;
  507. }
  508. if (Transfer == MMC_IOBLOCKS_READ) {
  509. #ifndef USE_STREAM
  510. // Read one block of Data
  511. Status = MmcHost->ReadBlockData(Lba,This->Media->BlockSize,Buffer);
  512. if (EFI_ERROR(Status)) {
  513. DEBUG((EFI_D_BLKIO, "MmcIdentificationMode(): Error Read Block Data and Status = %r\n", Status));
  514. return Status;
  515. }
  516. #else
  517. //TODO: Read a steam
  518. ASSERT(0);
  519. #endif
  520. Status = MmcNotifyState (MmcHostInstance, MmcProgrammingState);
  521. if (EFI_ERROR(Status)) {
  522. DEBUG((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcProgrammingState\n"));
  523. return Status;
  524. }
  525. } else {
  526. #ifndef USE_STREAM
  527. // Write one block of Data
  528. Status = MmcHost->WriteBlockData(Lba,This->Media->BlockSize,Buffer);
  529. if (EFI_ERROR(Status)) {
  530. DEBUG((EFI_D_BLKIO, "MmcIdentificationMode(): Error Write Block Data and Status = %r\n", Status));
  531. return Status;
  532. }
  533. #else
  534. //TODO: Write a steam
  535. ASSERT(0);
  536. #endif
  537. }
  538. // Command 12 - Stop transmission (ends read)
  539. Status = MmcHost->SendCommand(MMC_CMD12, 0);
  540. if (!EFI_ERROR(Status)) {
  541. MmcHost->ReceiveResponse(MMC_RESPONSE_TYPE_R1b,Response);
  542. }
  543. // Command 13 - Read status and wait for programming to complete (return to tran)
  544. Timeout = MMCI0_TIMEOUT;
  545. CmdArg = MmcHostInstance->CardInfo.RCA << 16;
  546. Response[0] = 0;
  547. while(!(Response[0] & MMC_R0_READY_FOR_DATA) && (MMC_R0_CURRENTSTATE(Response) != MMC_R0_STATE_TRAN) && Timeout--) {
  548. Status = MmcHost->SendCommand(MMC_CMD13, CmdArg);
  549. if (!EFI_ERROR(Status)) {
  550. MmcHost->ReceiveResponse(MMC_RESPONSE_TYPE_R1,Response);
  551. }
  552. NanoSecondDelay(100);
  553. Timeout--;
  554. }
  555. Status = MmcNotifyState (MmcHostInstance, MmcTransferState);
  556. if (EFI_ERROR(Status)) {
  557. DEBUG((EFI_D_ERROR, "MmcIdentificationMode() : Error MmcTransferState\n"));
  558. return Status;
  559. }
  560. BytesRemainingToBeTransfered -= This->Media->BlockSize;
  561. Lba += BlockCount;
  562. Buffer = (UINT8 *)Buffer + This->Media->BlockSize;
  563. }
  564. return EFI_SUCCESS;
  565. }
  566. EFI_STATUS
  567. EFIAPI
  568. MmcReadBlocks (
  569. IN EFI_BLOCK_IO_PROTOCOL *This,
  570. IN UINT32 MediaId,
  571. IN EFI_LBA Lba,
  572. IN UINTN BufferSize,
  573. OUT VOID *Buffer
  574. )
  575. {
  576. return MmcIoBlocks (This, MMC_IOBLOCKS_READ, MediaId, Lba, BufferSize, Buffer);
  577. }
  578. EFI_STATUS
  579. EFIAPI
  580. MmcWriteBlocks (
  581. IN EFI_BLOCK_IO_PROTOCOL *This,
  582. IN UINT32 MediaId,
  583. IN EFI_LBA Lba,
  584. IN UINTN BufferSize,
  585. IN VOID *Buffer
  586. )
  587. {
  588. return MmcIoBlocks (This, MMC_IOBLOCKS_WRITE, MediaId, Lba, BufferSize, Buffer);
  589. }
  590. EFI_STATUS
  591. EFIAPI
  592. MmcFlushBlocks (
  593. IN EFI_BLOCK_IO_PROTOCOL *This
  594. )
  595. {
  596. return EFI_SUCCESS;
  597. }