1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright © 2009 - Maxim Levitsky 4*4882a593Smuzhiyun * SmartMedia/xD translation layer 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * Based loosly on ssfdc.c which is 7*4882a593Smuzhiyun * © 2005 Eptar srl 8*4882a593Smuzhiyun * Author: Claudio Lanconelli <lanconelli.claudio@eptar.com> 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #include <linux/mtd/blktrans.h> 12*4882a593Smuzhiyun #include <linux/kfifo.h> 13*4882a593Smuzhiyun #include <linux/sched.h> 14*4882a593Smuzhiyun #include <linux/completion.h> 15*4882a593Smuzhiyun #include <linux/mtd/mtd.h> 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun struct ftl_zone { 20*4882a593Smuzhiyun bool initialized; 21*4882a593Smuzhiyun int16_t *lba_to_phys_table; /* LBA to physical table */ 22*4882a593Smuzhiyun struct kfifo free_sectors; /* queue of free sectors */ 23*4882a593Smuzhiyun }; 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun struct sm_ftl { 26*4882a593Smuzhiyun struct mtd_blktrans_dev *trans; 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun struct mutex mutex; /* protects the structure */ 29*4882a593Smuzhiyun struct ftl_zone *zones; /* FTL tables for each zone */ 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun /* Media information */ 32*4882a593Smuzhiyun int block_size; /* block size in bytes */ 33*4882a593Smuzhiyun int zone_size; /* zone size in blocks */ 34*4882a593Smuzhiyun int zone_count; /* number of zones */ 35*4882a593Smuzhiyun int max_lba; /* maximum lba in a zone */ 36*4882a593Smuzhiyun int smallpagenand; /* 256 bytes/page nand */ 37*4882a593Smuzhiyun bool readonly; /* is FS readonly */ 38*4882a593Smuzhiyun bool unstable; 39*4882a593Smuzhiyun int cis_block; /* CIS block location */ 40*4882a593Smuzhiyun int cis_boffset; /* CIS offset in the block */ 41*4882a593Smuzhiyun int cis_page_offset; /* CIS offset in the page */ 42*4882a593Smuzhiyun void *cis_buffer; /* tmp buffer for cis reads */ 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun /* Cache */ 45*4882a593Smuzhiyun int cache_block; /* block number of cached block */ 46*4882a593Smuzhiyun int cache_zone; /* zone of cached block */ 47*4882a593Smuzhiyun unsigned char *cache_data; /* cached block data */ 48*4882a593Smuzhiyun long unsigned int cache_data_invalid_bitmap; 49*4882a593Smuzhiyun bool cache_clean; 50*4882a593Smuzhiyun struct work_struct flush_work; 51*4882a593Smuzhiyun struct timer_list timer; 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun /* Geometry stuff */ 54*4882a593Smuzhiyun int heads; 55*4882a593Smuzhiyun int sectors; 56*4882a593Smuzhiyun int cylinders; 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun struct attribute_group *disk_attributes; 59*4882a593Smuzhiyun }; 60*4882a593Smuzhiyun 61*4882a593Smuzhiyun struct chs_entry { 62*4882a593Smuzhiyun unsigned long size; 63*4882a593Smuzhiyun unsigned short cyl; 64*4882a593Smuzhiyun unsigned char head; 65*4882a593Smuzhiyun unsigned char sec; 66*4882a593Smuzhiyun }; 67*4882a593Smuzhiyun 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun #define SM_FTL_PARTN_BITS 3 70*4882a593Smuzhiyun 71*4882a593Smuzhiyun #define sm_printk(format, ...) \ 72*4882a593Smuzhiyun printk(KERN_WARNING "sm_ftl" ": " format "\n", ## __VA_ARGS__) 73*4882a593Smuzhiyun 74*4882a593Smuzhiyun #define dbg(format, ...) \ 75*4882a593Smuzhiyun if (debug) \ 76*4882a593Smuzhiyun printk(KERN_DEBUG "sm_ftl" ": " format "\n", ## __VA_ARGS__) 77*4882a593Smuzhiyun 78*4882a593Smuzhiyun #define dbg_verbose(format, ...) \ 79*4882a593Smuzhiyun if (debug > 1) \ 80*4882a593Smuzhiyun printk(KERN_DEBUG "sm_ftl" ": " format "\n", ## __VA_ARGS__) 81*4882a593Smuzhiyun 82*4882a593Smuzhiyun 83*4882a593Smuzhiyun static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block, 84*4882a593Smuzhiyun int put_free); 85*4882a593Smuzhiyun static void sm_mark_block_bad(struct sm_ftl *ftl, int zone_num, int block); 86*4882a593Smuzhiyun 87*4882a593Smuzhiyun static int sm_recheck_media(struct sm_ftl *ftl); 88