Release 4.7 drivers/mtd/sm_ftl.h

/*
 * Copyright © 2009 - Maxim Levitsky
 * SmartMedia/xD translation layer
 *
 * Based loosly on ssfdc.c which is
 *  © 2005 Eptar srl
 *  Author: Claudio Lanconelli <lanconelli.claudio@eptar.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/mtd/blktrans.h>
#include <linux/kfifo.h>
#include <linux/sched.h>
#include <linux/completion.h>
#include <linux/mtd/mtd.h>




struct ftl_zone {
	
bool initialized;
	
int16_t *lba_to_phys_table;		/* LBA to physical table */
	
struct kfifo free_sectors;	/* queue of free sectors */
};


struct sm_ftl {
	
struct mtd_blktrans_dev *trans;

	
struct mutex mutex;		/* protects the structure */
	
struct ftl_zone *zones;		/* FTL tables for each zone */

	/* Media information */
	
int block_size;			/* block size in bytes */
	
int zone_size;			/* zone size in blocks */
	
int zone_count;			/* number of zones */
	
int max_lba;			/* maximum lba in a zone */
	
int smallpagenand;		/* 256 bytes/page nand */
	
bool readonly;			/* is FS readonly */
	
bool unstable;
	
int cis_block;			/* CIS block location */
	
int cis_boffset;		/* CIS offset in the block */
	
int cis_page_offset;		/* CIS offset in the page */
	
void *cis_buffer;		/* tmp buffer for cis reads */

	/* Cache */
	
int cache_block;		/* block number of cached block */
	
int cache_zone;			/* zone of cached block */
	
unsigned char *cache_data;	/* cached block data */
	
long unsigned int cache_data_invalid_bitmap;
	
bool cache_clean;
	
struct work_struct flush_work;
	
struct timer_list timer;

	/* Async erase stuff */
	
struct completion erase_completion;

	/* Geometry stuff */
	
int heads;
	
int sectors;
	
int cylinders;

	
struct attribute_group *disk_attributes;
};


struct chs_entry {
	
unsigned long size;
	
unsigned short cyl;
	
unsigned char head;
	
unsigned char sec;
};



#define SM_FTL_PARTN_BITS	3


#define sm_printk(format, ...) \
	printk(KERN_WARNING "sm_ftl" ": " format "\n", ## __VA_ARGS__)


#define dbg(format, ...) \
	if (debug) \
                printk(KERN_DEBUG "sm_ftl" ": " format "\n", ## __VA_ARGS__)


#define dbg_verbose(format, ...) \
	if (debug > 1) \
                printk(KERN_DEBUG "sm_ftl" ": " format "\n", ## __VA_ARGS__)


static void sm_erase_callback(struct erase_info *self);
static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block,
								int put_free);
static void sm_mark_block_bad(struct sm_ftl *ftl, int zone_num, int block);

static int sm_recheck_media(struct sm_ftl *ftl);
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Directory: drivers/mtd

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