227 lines
9.2 KiB
C++
227 lines
9.2 KiB
C++
/**
|
|
* Marlin 3D Printer Firmware
|
|
* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
|
|
*
|
|
* Based on Sprinter and grbl.
|
|
* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* Arduino SdFat Library
|
|
* Copyright (C) 2009 by William Greiman
|
|
*
|
|
* This file is part of the Arduino Sd2Card Library
|
|
*/
|
|
#include "Marlin.h"
|
|
#if ENABLED(SDSUPPORT)
|
|
#ifndef SdVolume_h
|
|
#define SdVolume_h
|
|
/**
|
|
* \file
|
|
* \brief SdVolume class
|
|
*/
|
|
#include "SdFatConfig.h"
|
|
#include "Sd2Card.h"
|
|
#include "SdFatStructs.h"
|
|
|
|
//==============================================================================
|
|
// SdVolume class
|
|
/**
|
|
* \brief Cache for an SD data block
|
|
*/
|
|
union cache_t {
|
|
/** Used to access cached file data blocks. */
|
|
uint8_t data[512];
|
|
/** Used to access cached FAT16 entries. */
|
|
uint16_t fat16[256];
|
|
/** Used to access cached FAT32 entries. */
|
|
uint32_t fat32[128];
|
|
/** Used to access cached directory entries. */
|
|
dir_t dir[16];
|
|
/** Used to access a cached Master Boot Record. */
|
|
mbr_t mbr;
|
|
/** Used to access to a cached FAT boot sector. */
|
|
fat_boot_t fbs;
|
|
/** Used to access to a cached FAT32 boot sector. */
|
|
fat32_boot_t fbs32;
|
|
/** Used to access to a cached FAT32 FSINFO sector. */
|
|
fat32_fsinfo_t fsinfo;
|
|
};
|
|
//------------------------------------------------------------------------------
|
|
/**
|
|
* \class SdVolume
|
|
* \brief Access FAT16 and FAT32 volumes on SD and SDHC cards.
|
|
*/
|
|
class SdVolume {
|
|
public:
|
|
/** Create an instance of SdVolume */
|
|
SdVolume() : fatType_(0) {}
|
|
/** Clear the cache and returns a pointer to the cache. Used by the WaveRP
|
|
* recorder to do raw write to the SD card. Not for normal apps.
|
|
* \return A pointer to the cache buffer or zero if an error occurs.
|
|
*/
|
|
cache_t* cacheClear() {
|
|
if (!cacheFlush()) return 0;
|
|
cacheBlockNumber_ = 0XFFFFFFFF;
|
|
return &cacheBuffer_;
|
|
}
|
|
/** Initialize a FAT volume. Try partition one first then try super
|
|
* floppy format.
|
|
*
|
|
* \param[in] dev The Sd2Card where the volume is located.
|
|
*
|
|
* \return The value one, true, is returned for success and
|
|
* the value zero, false, is returned for failure. Reasons for
|
|
* failure include not finding a valid partition, not finding a valid
|
|
* FAT file system or an I/O error.
|
|
*/
|
|
bool init(Sd2Card* dev) { return init(dev, 1) ? true : init(dev, 0);}
|
|
bool init(Sd2Card* dev, uint8_t part);
|
|
|
|
// inline functions that return volume info
|
|
/** \return The volume's cluster size in blocks. */
|
|
uint8_t blocksPerCluster() const {return blocksPerCluster_;}
|
|
/** \return The number of blocks in one FAT. */
|
|
uint32_t blocksPerFat() const {return blocksPerFat_;}
|
|
/** \return The total number of clusters in the volume. */
|
|
uint32_t clusterCount() const {return clusterCount_;}
|
|
/** \return The shift count required to multiply by blocksPerCluster. */
|
|
uint8_t clusterSizeShift() const {return clusterSizeShift_;}
|
|
/** \return The logical block number for the start of file data. */
|
|
uint32_t dataStartBlock() const {return dataStartBlock_;}
|
|
/** \return The number of FAT structures on the volume. */
|
|
uint8_t fatCount() const {return fatCount_;}
|
|
/** \return The logical block number for the start of the first FAT. */
|
|
uint32_t fatStartBlock() const {return fatStartBlock_;}
|
|
/** \return The FAT type of the volume. Values are 12, 16 or 32. */
|
|
uint8_t fatType() const {return fatType_;}
|
|
int32_t freeClusterCount();
|
|
/** \return The number of entries in the root directory for FAT16 volumes. */
|
|
uint32_t rootDirEntryCount() const {return rootDirEntryCount_;}
|
|
/** \return The logical block number for the start of the root directory
|
|
on FAT16 volumes or the first cluster number on FAT32 volumes. */
|
|
uint32_t rootDirStart() const {return rootDirStart_;}
|
|
/** Sd2Card object for this volume
|
|
* \return pointer to Sd2Card object.
|
|
*/
|
|
Sd2Card* sdCard() {return sdCard_;}
|
|
/** Debug access to FAT table
|
|
*
|
|
* \param[in] n cluster number.
|
|
* \param[out] v value of entry
|
|
* \return true for success or false for failure
|
|
*/
|
|
bool dbgFat(uint32_t n, uint32_t* v) {return fatGet(n, v);}
|
|
//------------------------------------------------------------------------------
|
|
private:
|
|
// Allow SdBaseFile access to SdVolume private data.
|
|
friend class SdBaseFile;
|
|
|
|
// value for dirty argument in cacheRawBlock to indicate read from cache
|
|
static bool const CACHE_FOR_READ = false;
|
|
// value for dirty argument in cacheRawBlock to indicate write to cache
|
|
static bool const CACHE_FOR_WRITE = true;
|
|
|
|
#if USE_MULTIPLE_CARDS
|
|
cache_t cacheBuffer_; // 512 byte cache for device blocks
|
|
uint32_t cacheBlockNumber_; // Logical number of block in the cache
|
|
Sd2Card* sdCard_; // Sd2Card object for cache
|
|
bool cacheDirty_; // cacheFlush() will write block if true
|
|
uint32_t cacheMirrorBlock_; // block number for mirror FAT
|
|
#else // USE_MULTIPLE_CARDS
|
|
static cache_t cacheBuffer_; // 512 byte cache for device blocks
|
|
static uint32_t cacheBlockNumber_; // Logical number of block in the cache
|
|
static Sd2Card* sdCard_; // Sd2Card object for cache
|
|
static bool cacheDirty_; // cacheFlush() will write block if true
|
|
static uint32_t cacheMirrorBlock_; // block number for mirror FAT
|
|
#endif // USE_MULTIPLE_CARDS
|
|
uint32_t allocSearchStart_; // start cluster for alloc search
|
|
uint8_t blocksPerCluster_; // cluster size in blocks
|
|
uint32_t blocksPerFat_; // FAT size in blocks
|
|
uint32_t clusterCount_; // clusters in one FAT
|
|
uint8_t clusterSizeShift_; // shift to convert cluster count to block count
|
|
uint32_t dataStartBlock_; // first data block number
|
|
uint8_t fatCount_; // number of FATs on volume
|
|
uint32_t fatStartBlock_; // start block for first FAT
|
|
uint8_t fatType_; // volume type (12, 16, OR 32)
|
|
uint16_t rootDirEntryCount_; // number of entries in FAT16 root dir
|
|
uint32_t rootDirStart_; // root start block for FAT16, cluster for FAT32
|
|
//----------------------------------------------------------------------------
|
|
bool allocContiguous(uint32_t count, uint32_t* curCluster);
|
|
uint8_t blockOfCluster(uint32_t position) const {
|
|
return (position >> 9) & (blocksPerCluster_ - 1);
|
|
}
|
|
uint32_t clusterStartBlock(uint32_t cluster) const {
|
|
return dataStartBlock_ + ((cluster - 2) << clusterSizeShift_);
|
|
}
|
|
uint32_t blockNumber(uint32_t cluster, uint32_t position) const {
|
|
return clusterStartBlock(cluster) + blockOfCluster(position);
|
|
}
|
|
cache_t* cache() {return &cacheBuffer_;}
|
|
uint32_t cacheBlockNumber() {return cacheBlockNumber_;}
|
|
#if USE_MULTIPLE_CARDS
|
|
bool cacheFlush();
|
|
bool cacheRawBlock(uint32_t blockNumber, bool dirty);
|
|
#else // USE_MULTIPLE_CARDS
|
|
static bool cacheFlush();
|
|
static bool cacheRawBlock(uint32_t blockNumber, bool dirty);
|
|
#endif // USE_MULTIPLE_CARDS
|
|
// used by SdBaseFile write to assign cache to SD location
|
|
void cacheSetBlockNumber(uint32_t blockNumber, bool dirty) {
|
|
cacheDirty_ = dirty;
|
|
cacheBlockNumber_ = blockNumber;
|
|
}
|
|
void cacheSetDirty() {cacheDirty_ |= CACHE_FOR_WRITE;}
|
|
bool chainSize(uint32_t beginCluster, uint32_t* size);
|
|
bool fatGet(uint32_t cluster, uint32_t* value);
|
|
bool fatPut(uint32_t cluster, uint32_t value);
|
|
bool fatPutEOC(uint32_t cluster) {
|
|
return fatPut(cluster, 0x0FFFFFFF);
|
|
}
|
|
bool freeChain(uint32_t cluster);
|
|
bool isEOC(uint32_t cluster) const {
|
|
if (FAT12_SUPPORT && fatType_ == 12) return cluster >= FAT12EOC_MIN;
|
|
if (fatType_ == 16) return cluster >= FAT16EOC_MIN;
|
|
return cluster >= FAT32EOC_MIN;
|
|
}
|
|
bool readBlock(uint32_t block, uint8_t* dst) {
|
|
return sdCard_->readBlock(block, dst);
|
|
}
|
|
bool writeBlock(uint32_t block, const uint8_t* dst) {
|
|
return sdCard_->writeBlock(block, dst);
|
|
}
|
|
//------------------------------------------------------------------------------
|
|
// Deprecated functions - suppress cpplint warnings with NOLINT comment
|
|
#if ALLOW_DEPRECATED_FUNCTIONS && !defined(DOXYGEN)
|
|
public:
|
|
/** \deprecated Use: bool SdVolume::init(Sd2Card* dev);
|
|
* \param[in] dev The SD card where the volume is located.
|
|
* \return true for success or false for failure.
|
|
*/
|
|
bool init(Sd2Card& dev) {return init(&dev);} // NOLINT
|
|
/** \deprecated Use: bool SdVolume::init(Sd2Card* dev, uint8_t vol);
|
|
* \param[in] dev The SD card where the volume is located.
|
|
* \param[in] part The partition to be used.
|
|
* \return true for success or false for failure.
|
|
*/
|
|
bool init(Sd2Card& dev, uint8_t part) { // NOLINT
|
|
return init(&dev, part);
|
|
}
|
|
#endif // ALLOW_DEPRECATED_FUNCTIONS
|
|
};
|
|
#endif // SdVolume
|
|
#endif
|