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87 lines
2.2 KiB
87 lines
2.2 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright © 2009 - Maxim Levitsky |
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* SmartMedia/xD translation layer |
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* |
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* Based loosly on ssfdc.c which is |
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* © 2005 Eptar srl |
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* Author: Claudio Lanconelli <[email protected]> |
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*/ |
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#include <linux/mtd/blktrans.h> |
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#include <linux/kfifo.h> |
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#include <linux/sched.h> |
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#include <linux/completion.h> |
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#include <linux/mtd/mtd.h> |
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struct ftl_zone { |
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bool initialized; |
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int16_t *lba_to_phys_table; /* LBA to physical table */ |
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struct kfifo free_sectors; /* queue of free sectors */ |
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}; |
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struct sm_ftl { |
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struct mtd_blktrans_dev *trans; |
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struct mutex mutex; /* protects the structure */ |
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struct ftl_zone *zones; /* FTL tables for each zone */ |
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/* Media information */ |
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int block_size; /* block size in bytes */ |
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int zone_size; /* zone size in blocks */ |
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int zone_count; /* number of zones */ |
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int max_lba; /* maximum lba in a zone */ |
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int smallpagenand; /* 256 bytes/page nand */ |
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bool readonly; /* is FS readonly */ |
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bool unstable; |
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int cis_block; /* CIS block location */ |
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int cis_boffset; /* CIS offset in the block */ |
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int cis_page_offset; /* CIS offset in the page */ |
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void *cis_buffer; /* tmp buffer for cis reads */ |
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/* Cache */ |
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int cache_block; /* block number of cached block */ |
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int cache_zone; /* zone of cached block */ |
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unsigned char *cache_data; /* cached block data */ |
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long unsigned int cache_data_invalid_bitmap; |
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bool cache_clean; |
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struct work_struct flush_work; |
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struct timer_list timer; |
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/* Geometry stuff */ |
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int heads; |
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int sectors; |
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int cylinders; |
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struct attribute_group *disk_attributes; |
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}; |
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struct chs_entry { |
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unsigned long size; |
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unsigned short cyl; |
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unsigned char head; |
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unsigned char sec; |
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}; |
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#define SM_FTL_PARTN_BITS 3 |
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#define sm_printk(format, ...) \ |
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printk(KERN_WARNING "sm_ftl" ": " format "\n", ## __VA_ARGS__) |
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#define dbg(format, ...) \ |
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if (debug) \ |
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printk(KERN_DEBUG "sm_ftl" ": " format "\n", ## __VA_ARGS__) |
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#define dbg_verbose(format, ...) \ |
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if (debug > 1) \ |
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printk(KERN_DEBUG "sm_ftl" ": " format "\n", ## __VA_ARGS__) |
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static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block, |
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int put_free); |
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static void sm_mark_block_bad(struct sm_ftl *ftl, int zone_num, int block); |
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static int sm_recheck_media(struct sm_ftl *ftl);
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