Permalink
Switch branches/tags
Nothing to show
Find file
Fetching contributors…
Cannot retrieve contributors at this time
95 lines (74 sloc) 2.49 KB
/*
* 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);