| /* |
| * 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; |
| |
| /* 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 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); |