#ifndef LFS_FLASHBD_H
#define LFS_FLASHBD_H

#include "lfs.h"
#include "lfs_util.h"

#ifdef __cplusplus
extern "C"
{
#endif


// Block device specific tracing
#ifdef LFS_FLASHBD_YES_TRACE
#define LFS_FLASHBD_TRACE(...) LFS_TRACE(__VA_ARGS__)
#else
#define LFS_FLASHBD_TRACE(...)
#endif

// flashbd config (optional)
struct lfs_flashbd_config {
    // 8-bit erase value to simulate erasing with. -1 indicates no erase
    // occurs, which is still a valid block device
    int32_t erase_value;
};

// flashbd state
typedef struct lfs_flashbd {
    uint32_t start_addr;
	uint32_t end_addr;
    const struct lfs_flashbd_config *cfg;
} lfs_flashbd_t;


// Create a flash block device using the geometry in lfs_config
int lfs_flashbd_create(const struct lfs_config *cfg);
int lfs_flashbd_createcfg(const struct lfs_config *cfg,
        const struct lfs_flashbd_config *bdcfg);

// Clean up memory associated with block device
int lfs_flashbd_destroy(const struct lfs_config *cfg);

// Read a block
int lfs_flashbd_read(const struct lfs_config *cfg, lfs_block_t block,
        lfs_off_t off, void *buffer, lfs_size_t size);

// Program a block
//
// The block must have previously been erased.
int lfs_flashbd_prog(const struct lfs_config *cfg, lfs_block_t block,
        lfs_off_t off, const void *buffer, lfs_size_t size);

// Erase a block
//
// A block must be erased before being programmed. The
// state of an erased block is undefined.
int lfs_flashbd_erase(const struct lfs_config *cfg, lfs_block_t block);

// Sync the block device
int lfs_flashbd_sync(const struct lfs_config *cfg);

int lfs_spi_flashbd_init(void);
int lfs_spi_flashbd_read(const struct lfs_config *cfg, lfs_block_t block,
        lfs_off_t off, void *buffer, lfs_size_t size);
int lfs_spi_flashbd_prog(const struct lfs_config *cfg, lfs_block_t block,
        lfs_off_t off, const void *buffer, lfs_size_t size);
int lfs_spi_flashbd_erase(const struct lfs_config *cfg, lfs_block_t block);
int lfs_spi_flashbd_sync(const struct lfs_config *cfg);

#ifdef __cplusplus
} /* extern "C" */
#endif

#endif