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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright © 2009 - Maxim Levitsky4 * SmartMedia/xD translation layer5 *6 * Based loosly on ssfdc.c which is7 * © 2005 Eptar srl8 * Author: Claudio Lanconelli <lanconelli.claudio@eptar.com>9 */10 11#include <linux/mtd/blktrans.h>12#include <linux/kfifo.h>13#include <linux/sched.h>14#include <linux/completion.h>15#include <linux/mtd/mtd.h>16 17 18 19struct ftl_zone {20 bool initialized;21 int16_t *lba_to_phys_table; /* LBA to physical table */22 struct kfifo free_sectors; /* queue of free sectors */23};24 25struct sm_ftl {26 struct mtd_blktrans_dev *trans;27 28 struct mutex mutex; /* protects the structure */29 struct ftl_zone *zones; /* FTL tables for each zone */30 31 /* Media information */32 int block_size; /* block size in bytes */33 int zone_size; /* zone size in blocks */34 int zone_count; /* number of zones */35 int max_lba; /* maximum lba in a zone */36 int smallpagenand; /* 256 bytes/page nand */37 bool readonly; /* is FS readonly */38 bool unstable;39 int cis_block; /* CIS block location */40 int cis_boffset; /* CIS offset in the block */41 int cis_page_offset; /* CIS offset in the page */42 void *cis_buffer; /* tmp buffer for cis reads */43 44 /* Cache */45 int cache_block; /* block number of cached block */46 int cache_zone; /* zone of cached block */47 unsigned char *cache_data; /* cached block data */48 long unsigned int cache_data_invalid_bitmap;49 bool cache_clean;50 struct work_struct flush_work;51 struct timer_list timer;52 53 /* Geometry stuff */54 int heads;55 int sectors;56 int cylinders;57 58 struct attribute_group *disk_attributes;59};60 61struct chs_entry {62 unsigned long size;63 unsigned short cyl;64 unsigned char head;65 unsigned char sec;66};67 68 69#define SM_FTL_PARTN_BITS 370 71#define sm_printk(format, ...) \72 printk(KERN_WARNING "sm_ftl" ": " format "\n", ## __VA_ARGS__)73 74#define dbg(format, ...) \75 if (debug) \76 printk(KERN_DEBUG "sm_ftl" ": " format "\n", ## __VA_ARGS__)77 78#define dbg_verbose(format, ...) \79 if (debug > 1) \80 printk(KERN_DEBUG "sm_ftl" ": " format "\n", ## __VA_ARGS__)81 82 83static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block,84 int put_free);85static void sm_mark_block_bad(struct sm_ftl *ftl, int zone_num, int block);86 87static int sm_recheck_media(struct sm_ftl *ftl);88