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- /** @file
- *
- * Copyright (c) 2011-2015, ARM Limited. All rights reserved.
- *
- * This program and the accompanying materials
- * are licensed and made available under the terms and conditions of the BSD License
- * which accompanies this distribution. The full text of the license may be found at
- * http://opensource.org/licenses/bsd-license.php
- *
- * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
- *
- **/
- #include <Library/BaseMemoryLib.h>
- #include "Mmc.h"
- EFI_STATUS
- MmcNotifyState (
- IN MMC_HOST_INSTANCE *MmcHostInstance,
- IN MMC_STATE State
- )
- {
- MmcHostInstance->State = State;
- return MmcHostInstance->MmcHost->NotifyState (MmcHostInstance->MmcHost, State);
- }
- EFI_STATUS
- EFIAPI
- MmcGetCardStatus (
- IN MMC_HOST_INSTANCE *MmcHostInstance
- )
- {
- EFI_STATUS Status;
- UINT32 Response[4];
- UINTN CmdArg;
- EFI_MMC_HOST_PROTOCOL *MmcHost;
- Status = EFI_SUCCESS;
- MmcHost = MmcHostInstance->MmcHost;
- CmdArg = 0;
- if (MmcHost == NULL) {
- return EFI_INVALID_PARAMETER;
- }
- if (MmcHostInstance->State != MmcHwInitializationState) {
- //Get the Status of the card.
- CmdArg = MmcHostInstance->CardInfo.RCA << 16;
- Status = MmcHost->SendCommand (MmcHost, MMC_CMD13, CmdArg);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "MmcGetCardStatus(MMC_CMD13): Error and Status = %r\n", Status));
- return Status;
- }
- //Read Response
- MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R1, Response);
- PrintResponseR1 (Response[0]);
- }
- return Status;
- }
- EFI_STATUS
- EFIAPI
- MmcReset (
- IN EFI_BLOCK_IO_PROTOCOL *This,
- IN BOOLEAN ExtendedVerification
- )
- {
- MMC_HOST_INSTANCE *MmcHostInstance;
- MmcHostInstance = MMC_HOST_INSTANCE_FROM_BLOCK_IO_THIS (This);
- if (MmcHostInstance->MmcHost == NULL) {
- // Nothing to do
- return EFI_SUCCESS;
- }
- // If a card is not present then clear all media settings
- if (!MmcHostInstance->MmcHost->IsCardPresent (MmcHostInstance->MmcHost)) {
- MmcHostInstance->BlockIo.Media->MediaPresent = FALSE;
- MmcHostInstance->BlockIo.Media->LastBlock = 0;
- MmcHostInstance->BlockIo.Media->BlockSize = 512; // Should be zero but there is a bug in DiskIo
- MmcHostInstance->BlockIo.Media->ReadOnly = FALSE;
- // Indicate that the driver requires initialization
- MmcHostInstance->State = MmcHwInitializationState;
- return EFI_SUCCESS;
- }
- // Implement me. Either send a CMD0 (could not work for some MMC host) or just turn off/turn
- // on power and restart Identification mode
- return EFI_SUCCESS;
- }
- EFI_STATUS
- MmcDetectCard (
- EFI_MMC_HOST_PROTOCOL *MmcHost
- )
- {
- if (!MmcHost->IsCardPresent (MmcHost)) {
- return EFI_NO_MEDIA;
- } else {
- return EFI_SUCCESS;
- }
- }
- EFI_STATUS
- MmcStopTransmission (
- EFI_MMC_HOST_PROTOCOL *MmcHost
- )
- {
- EFI_STATUS Status;
- UINT32 Response[4];
- // Command 12 - Stop transmission (ends read or write)
- // Normally only needed for streaming transfers or after error.
- Status = MmcHost->SendCommand (MmcHost, MMC_CMD12, 0);
- if (!EFI_ERROR (Status)) {
- MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R1b, Response);
- }
- return Status;
- }
- #define MMCI0_BLOCKLEN 512
- #define MMCI0_TIMEOUT 10000
- STATIC
- EFI_STATUS
- MmcTransferBlock (
- IN EFI_BLOCK_IO_PROTOCOL *This,
- IN UINTN Cmd,
- IN UINTN Transfer,
- IN UINT32 MediaId,
- IN EFI_LBA Lba,
- IN UINTN BufferSize,
- OUT VOID *Buffer
- )
- {
- EFI_STATUS Status;
- UINTN CmdArg;
- INTN Timeout;
- UINT32 Response[4];
- MMC_HOST_INSTANCE *MmcHostInstance;
- EFI_MMC_HOST_PROTOCOL *MmcHost;
- MmcHostInstance = MMC_HOST_INSTANCE_FROM_BLOCK_IO_THIS (This);
- MmcHost = MmcHostInstance->MmcHost;
- if (MmcHostInstance->CardInfo.CardType != EMMC_CARD) {
- //Set command argument based on the card capacity
- //if 0 : SDSC card
- //if 1 : SDXC/SDHC
- if (MmcHostInstance->CardInfo.OCRData.AccessMode & SD_CARD_CAPACITY) {
- CmdArg = Lba;
- } else {
- CmdArg = Lba * This->Media->BlockSize;
- }
- } else {
- //Set command argument based on the card access mode (Byte mode or Block mode)
- if ((MmcHostInstance->CardInfo.OCRData.AccessMode & MMC_OCR_ACCESS_MASK) ==
- MMC_OCR_ACCESS_SECTOR) {
- CmdArg = Lba;
- } else {
- CmdArg = Lba * This->Media->BlockSize;
- }
- }
- Status = MmcHost->SendCommand (MmcHost, Cmd, CmdArg);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "%a(MMC_CMD%d): Error %r\n", __func__, Cmd, Status));
- return Status;
- }
- if (Transfer == MMC_IOBLOCKS_READ) {
- // Read Data
- Status = MmcHost->ReadBlockData (MmcHost, Lba, BufferSize, Buffer);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_BLKIO, "%a(): Error Read Block Data and Status = %r\n", __func__, Status));
- MmcStopTransmission (MmcHost);
- return Status;
- }
- Status = MmcNotifyState (MmcHostInstance, MmcProgrammingState);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "%a() : Error MmcProgrammingState\n", __func__));
- return Status;
- }
- } else {
- // Write Data
- Status = MmcHost->WriteBlockData (MmcHost, Lba, BufferSize, Buffer);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_BLKIO, "%a(): Error Write Block Data and Status = %r\n", __func__, Status));
- MmcStopTransmission (MmcHost);
- return Status;
- }
- }
- // Command 13 - Read status and wait for programming to complete (return to tran)
- Timeout = MMCI0_TIMEOUT;
- CmdArg = MmcHostInstance->CardInfo.RCA << 16;
- Response[0] = 0;
- while(!(Response[0] & MMC_R0_READY_FOR_DATA)
- && (MMC_R0_CURRENTSTATE (Response) != MMC_R0_STATE_TRAN)
- && Timeout--) {
- Status = MmcHost->SendCommand (MmcHost, MMC_CMD13, CmdArg);
- if (!EFI_ERROR (Status)) {
- MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R1, Response);
- if (Response[0] & MMC_R0_READY_FOR_DATA) {
- break; // Prevents delay once finished
- }
- }
- }
- if (BufferSize > This->Media->BlockSize) {
- Status = MmcHost->SendCommand (MmcHost, MMC_CMD12, 0);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_BLKIO, "%a(): Error and Status:%r\n", __func__, Status));
- }
- MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R1b, Response);
- }
- Status = MmcNotifyState (MmcHostInstance, MmcTransferState);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "MmcIoBlocks() : Error MmcTransferState\n"));
- return Status;
- }
- return Status;
- }
- EFI_STATUS
- MmcIoBlocks (
- IN EFI_BLOCK_IO_PROTOCOL *This,
- IN UINTN Transfer,
- IN UINT32 MediaId,
- IN EFI_LBA Lba,
- IN UINTN BufferSize,
- OUT VOID *Buffer
- )
- {
- UINT32 Response[4];
- EFI_STATUS Status;
- UINTN CmdArg;
- INTN Timeout;
- UINTN Cmd;
- MMC_HOST_INSTANCE *MmcHostInstance;
- EFI_MMC_HOST_PROTOCOL *MmcHost;
- UINTN BytesRemainingToBeTransfered;
- UINTN BlockCount;
- UINTN ConsumeSize;
- BlockCount = 1;
- MmcHostInstance = MMC_HOST_INSTANCE_FROM_BLOCK_IO_THIS (This);
- ASSERT (MmcHostInstance != NULL);
- MmcHost = MmcHostInstance->MmcHost;
- ASSERT (MmcHost);
- if (This->Media->MediaId != MediaId) {
- return EFI_MEDIA_CHANGED;
- }
- if ((MmcHost == NULL) || (Buffer == NULL)) {
- return EFI_INVALID_PARAMETER;
- }
- // Check if a Card is Present
- if (!MmcHostInstance->BlockIo.Media->MediaPresent) {
- return EFI_NO_MEDIA;
- }
- if (MMC_HOST_HAS_ISMULTIBLOCK(MmcHost) && MmcHost->IsMultiBlock(MmcHost)) {
- BlockCount = (BufferSize + This->Media->BlockSize - 1) / This->Media->BlockSize;
- }
- // All blocks must be within the device
- if ((Lba + (BufferSize / This->Media->BlockSize)) > (This->Media->LastBlock + 1)) {
- return EFI_INVALID_PARAMETER;
- }
- if ((Transfer == MMC_IOBLOCKS_WRITE) && (This->Media->ReadOnly == TRUE)) {
- return EFI_WRITE_PROTECTED;
- }
- // Reading 0 Byte is valid
- if (BufferSize == 0) {
- return EFI_SUCCESS;
- }
- // The buffer size must be an exact multiple of the block size
- if ((BufferSize % This->Media->BlockSize) != 0) {
- return EFI_BAD_BUFFER_SIZE;
- }
- // Check the alignment
- if ((This->Media->IoAlign > 2) && (((UINTN)Buffer & (This->Media->IoAlign - 1)) != 0)) {
- return EFI_INVALID_PARAMETER;
- }
- BytesRemainingToBeTransfered = BufferSize;
- while (BytesRemainingToBeTransfered > 0) {
- // Check if the Card is in Ready status
- CmdArg = MmcHostInstance->CardInfo.RCA << 16;
- Response[0] = 0;
- Timeout = 20;
- while( (!(Response[0] & MMC_R0_READY_FOR_DATA))
- && (MMC_R0_CURRENTSTATE (Response) != MMC_R0_STATE_TRAN)
- && Timeout--) {
- Status = MmcHost->SendCommand (MmcHost, MMC_CMD13, CmdArg);
- if (!EFI_ERROR (Status)) {
- MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R1, Response);
- }
- }
- if (0 == Timeout) {
- DEBUG ((EFI_D_ERROR, "The Card is busy\n"));
- return EFI_NOT_READY;
- }
- if (Transfer == MMC_IOBLOCKS_READ) {
- if (BlockCount == 1) {
- // Read a single block
- Cmd = MMC_CMD17;
- } else {
- // Read multiple blocks
- Cmd = MMC_CMD18;
- }
- } else {
- if (BlockCount == 1) {
- // Write a single block
- Cmd = MMC_CMD24;
- } else {
- // Write multiple blocks
- Cmd = MMC_CMD25;
- }
- }
- ConsumeSize = BlockCount * This->Media->BlockSize;
- if (BytesRemainingToBeTransfered < ConsumeSize) {
- ConsumeSize = BytesRemainingToBeTransfered;
- }
- Status = MmcTransferBlock (This, Cmd, Transfer, MediaId, Lba, ConsumeSize, Buffer);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "%a(): Failed to transfer block and Status:%r\n", __func__, Status));
- }
- BytesRemainingToBeTransfered -= ConsumeSize;
- if (BytesRemainingToBeTransfered > 0) {
- Lba += BlockCount;
- Buffer = (UINT8 *)Buffer + ConsumeSize;
- }
- }
- return EFI_SUCCESS;
- }
- EFI_STATUS
- EFIAPI
- MmcReadBlocks (
- IN EFI_BLOCK_IO_PROTOCOL *This,
- IN UINT32 MediaId,
- IN EFI_LBA Lba,
- IN UINTN BufferSize,
- OUT VOID *Buffer
- )
- {
- return MmcIoBlocks (This, MMC_IOBLOCKS_READ, MediaId, Lba, BufferSize, Buffer);
- }
- EFI_STATUS
- EFIAPI
- MmcWriteBlocks (
- IN EFI_BLOCK_IO_PROTOCOL *This,
- IN UINT32 MediaId,
- IN EFI_LBA Lba,
- IN UINTN BufferSize,
- IN VOID *Buffer
- )
- {
- return MmcIoBlocks (This, MMC_IOBLOCKS_WRITE, MediaId, Lba, BufferSize, Buffer);
- }
- EFI_STATUS
- EFIAPI
- MmcFlushBlocks (
- IN EFI_BLOCK_IO_PROTOCOL *This
- )
- {
- return EFI_SUCCESS;
- }
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