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