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/* ----------------------------------------------------------------------------
* SAM Software Package License
* ----------------------------------------------------------------------------
* Copyright (c) 2015, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
/* ----------------------------------------------------------------------------
* This file is based on the template source file named diskio.c,
* part of the FatFs Module R0.10b:
* Low level disk I/O module skeleton for FatFs (C)ChaN, 2014
* If a working storage control module is available, it should be
* attached to the FatFs via a glue function rather than modifying it.
* This is an example of glue functions to attach various existing
* storage control modules to the FatFs module with a defined API.
* ----------------------------------------------------------------------------
*/
#include "hal.h"
#if (HAL_USE_SDMMC == TRUE)
#include "sama_sdmmc_lld.h"
#if SDMMC_USE_FF_LIB == 1
#include "ccportab.h"
#include "ffconf.h"
#include "diskio.h"
#include <string.h>
#include "sama_sdmmc_lld.h"
#include "ch_sdmmc_device.h"
#include "ch_sdmmc_sd.h"
#include "ch_sdmmc_sdio.h"
#include "ch_sdmmc_trace.h"
/*----------------------------------------------------------------------------
* Definitions
*----------------------------------------------------------------------------*/
/**
* \brief Access the SD/MMC Library instances owned by the application.
* Used upon calls from the FatFs Module.
*
* Shall be implemented by the application.
*/
extern bool CC_WEAK sdmmcGetInstance(uint8_t index, SdmmcDriver **sdmmcp) ;
/*----------------------------------------------------------------------------
* Exported functions
*----------------------------------------------------------------------------*/
/**
* \brief Initialize a Drive.
* \param slot Physical drive number (0..).
* \return Drive status flags; STA_NOINIT if the specified drive does not exist.
*/
DSTATUS disk_initialize(BYTE slot)
{
SdmmcDriver *sdmmcp = NULL;
uint8_t rc;
if (!sdmmcGetInstance(slot, &sdmmcp))
return STA_NOINIT;
rc = SD_GetStatus(sdmmcp);
if (rc == SDMMC_NOT_SUPPORTED)
return STA_NODISK | STA_NOINIT;
#if 0
if (sdmmcp->state != MCID_IDLE )
sdmmc_device_deInit(sdmmcp);
/* FIXME a delay with the bus held off may be required by the device */
rc = sdmmc_device_start(sdmmcp);
if (rc == SDMMC_OK) {
rc = sdmmc_device_identify(sdmmcp);
}
#endif
return rc == SDMMC_OK ? 0 : STA_NOINIT;
}
/**
* \brief Get Drive Status.
* \param slot Physical drive number (0..).
* \return Drive status flags; STA_NODISK if there is currently no device in
* the specified slot.
*/
DSTATUS disk_status(BYTE slot)
{
SdmmcDriver *sdmmcp = NULL;
uint8_t rc;
if (!sdmmcGetInstance(slot, &sdmmcp))
return STA_NODISK | STA_NOINIT;
rc = SD_GetStatus(sdmmcp);
if (rc == SDMMC_NOT_SUPPORTED)
return STA_NODISK | STA_NOINIT;
else if (rc != SDMMC_OK)
return STA_NOINIT;
/* Well, no restriction on this drive */
return 0;
}
/**
* \brief Read Sector(s).
* \param slot Physical drive number (0..).
* \param buff Data buffer to store read data.
* \param sector Sector address in LBA.
* \param count Number of sectors to read.
* \return Result code; RES_OK if successful.
*/
DRESULT disk_read(BYTE slot, BYTE* buff, DWORD sector, UINT count)
{
SdmmcDriver *sdmmcp = NULL;
DRESULT res;
uint32_t blk_size, addr = sector, len = count;
uint8_t rc;
if (!sdmmcGetInstance(slot, &sdmmcp))
return RES_PARERR;
blk_size = sdmmcp->card.wBlockSize;
if (blk_size == 0)
return RES_NOTRDY;
if (blk_size < FF_MIN_SS) {
if (FF_MIN_SS % blk_size)
return RES_PARERR;
addr = sector * (FF_MIN_SS / blk_size);
len = count * (FF_MIN_SS / blk_size);
}
if (count <= 1)
rc = SD_ReadBlocks(sdmmcp, addr, buff, len);
else
rc = SD_Read(sdmmcp, addr, buff, len);
if (rc == SDMMC_OK || rc == SDMMC_CHANGED)
res = RES_OK;
else if (rc == SDMMC_ERR_IO || rc == SDMMC_ERR_RESP || rc == SDMMC_ERR)
res = RES_ERROR;
else if (rc == SDMMC_NO_RESPONSE || rc == SDMMC_BUSY
|| rc == SDMMC_NOT_INITIALIZED || rc == SDMMC_LOCKED
|| rc == SDMMC_STATE || rc == SDMMC_USER_CANCEL)
res = RES_NOTRDY;
else if (rc == SDMMC_PARAM || rc == SDMMC_NOT_SUPPORTED)
res = RES_PARERR;
else
res = RES_ERROR;
return res;
}
#if !FF_FS_READONLY
/**
* \brief Write Sector(s).
*
* \param slot Physical drive number (0..).
* \param buff Data to be written.
* \param sector Sector address in LBA.
* \param count Number of sectors to write.
* \return Result code; RES_OK if successful.
*
* \note The FatFs module will issue multiple sector transfer request
* (count > 1) to the disk I/O layer. The disk function should process
* the multiple sector transfer properly. Do not translate it into
* multiple single sector transfers to the media, or the data read/write
* performance may be drastically decreased.
*/
DRESULT disk_write(BYTE slot, const BYTE* buff, DWORD sector, UINT count)
{
SdmmcDriver *sdmmcp = NULL;
DRESULT res;
uint32_t blk_size, addr = sector, len = count;
uint8_t rc;
if (!sdmmcGetInstance(slot, &sdmmcp))
return RES_PARERR;
blk_size = sdmmcp->card.wBlockSize;
if (blk_size < FF_MIN_SS) {
if (FF_MIN_SS % blk_size)
return RES_PARERR;
addr = sector * (FF_MIN_SS / blk_size);
len = count * (FF_MIN_SS / blk_size);
}
if (count <= 1)
rc = SD_WriteBlocks(sdmmcp, addr, buff, len);
else
rc = SD_Write(sdmmcp, addr, buff, len);
if (rc == SDMMC_OK || rc == SDMMC_CHANGED)
res = RES_OK;
else if (rc == SDMMC_ERR_IO || rc == SDMMC_ERR_RESP || rc == SDMMC_ERR)
res = RES_ERROR;
else if (rc == SDMMC_NO_RESPONSE || rc == SDMMC_BUSY
|| rc == SDMMC_NOT_INITIALIZED || rc == SDMMC_LOCKED
|| rc == SDMMC_STATE || rc == SDMMC_USER_CANCEL)
res = RES_NOTRDY;
else if (rc == SDMMC_PARAM || rc == SDMMC_NOT_SUPPORTED)
res = RES_PARERR;
else
res = RES_ERROR;
return res;
}
#endif /* _FS_READONLY */
/**
* \brief Miscellaneous Functions.
* \param slot Physical drive number (0..).
* \param cmd Control code.
* \param buff Buffer to send/receive control data.
* \return Result code; RES_OK if successful.
*/
DRESULT disk_ioctl(BYTE slot, BYTE cmd, void* buff)
{
SdmmcDriver *sdmmcp = NULL;
DRESULT res;
DWORD *param_u32 = (DWORD *)buff;
WORD *param_u16 = (WORD *)buff;
uint32_t blk_size, blk_count;
if (!sdmmcGetInstance(slot, &sdmmcp))
return RES_PARERR;
switch (cmd)
{
case CTRL_SYNC:
/* SD/MMC devices do not seem to cache data beyond completion
* of the write commands. Note that if _FS_READONLY is enabled,
* this command is not needed. */
res = RES_OK;
break;
case GET_SECTOR_COUNT:
if (!buff)
return RES_PARERR;
blk_size = sdmmcp->card.wBlockSize;
blk_count = sdmmcp->card.dwNbBlocks;
if (blk_size < FF_MIN_SS)
{
if (FF_MIN_SS % blk_size)
return RES_PARERR;
*param_u32 = blk_count / (FF_MIN_SS / blk_size);
}
else
*param_u32 = blk_count;
res = RES_OK;
break;
case GET_SECTOR_SIZE:
/* Note that if _MAX_SS equals _MIN_SS i.e. the drive does not
* have to support several sector sizes, this command is not
* needed. */
if (!buff)
return RES_PARERR;
blk_size = sdmmcp->card.wBlockSize;
*param_u16 = blk_size >= FF_MIN_SS ? blk_size : FF_MIN_SS;
res = RES_OK;
break;
case GET_BLOCK_SIZE:
if (!buff)
return RES_PARERR;
/* On SD/MMC devices, erase block size is the same as write
* block size.
* Hence, erasing as little as one sector is allowed. */
*param_u32 = 1;
res = RES_OK;
break;
case CTRL_TRIM:
/* This TRIM-like command is not implemented.
* It would be required if _USE_TRIM was enabled. */
res = RES_PARERR;
break;
default:
res = RES_PARERR;
break;
}
return res;
}
#endif
#endif
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