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- /*
- * 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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