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/****************************************************************************
* include/nuttx/fs/smart.h
* Sector Mapped Allocation for Really Tiny (SMART) FLASH interface
*
* Copyright (C) 2013 Ken Pettit. All rights reserved.
* Author: Ken Pettit <pettitkd@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS 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.
*
****************************************************************************/
#ifndef __INCLUDE_NUTTX_SMART_H
#define __INCLUDE_NUTTX_SMART_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Macros to hide implementation */
#define SMART_FMT_ISFORMATTED 0x01
#define SMART_FMT_HASBYTEWRITE 0x02
/****************************************************************************
* Public Types
****************************************************************************/
/* The following defines the format information for the device. This
* information is retrieved via the BIOC_GETFORMAT ioctl.
*/
struct smart_format_s
{
uint16_t sectorsize; /* Size of one read/write sector */
uint16_t availbytes; /* Number of bytes available in each sector */
uint16_t nsectors; /* Total number of sectors on device */
uint16_t nfreesectors; /* Number of free sectors on device */
uint8_t flags; /* Format flags (see above) */
uint8_t namesize; /* Size of filenames on this volume */
#ifdef CONFIG_SMARTFS_MULTI_ROOT_DIRS
uint8_t nrootdirentries; /* Number of root directories on this device */
uint8_t rootdirnum; /* Root directory number for this dev entry */
#endif
};
/* The following defines the information for writing a logical sector
* to the device.
*/
struct smart_read_write_s
{
uint16_t logsector; /* The logical sector number */
uint16_t offset; /* Offset within the sector to write to */
uint16_t count; /* Number of bytes to write */
const uint8_t *buffer; /* Pointer to the data to write */
};
/****************************************************************************
* Public Data
****************************************************************************/
#ifndef __ASSEMBLY__
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __INCLUDE_NUTTX_SMART_H */
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