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d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
7d17c02a ML |
2 | /* |
3 | * Copyright © 2009 - Maxim Levitsky | |
4 | * SmartMedia/xD translation layer | |
5 | * | |
6 | * Based loosly on ssfdc.c which is | |
7 | * © 2005 Eptar srl | |
8 | * Author: Claudio Lanconelli <lanconelli.claudio@eptar.com> | |
7d17c02a ML |
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 | ||
19 | struct ftl_zone { | |
334e5f56 | 20 | bool initialized; |
7d17c02a ML |
21 | int16_t *lba_to_phys_table; /* LBA to physical table */ |
22 | struct kfifo free_sectors; /* queue of free sectors */ | |
23 | }; | |
24 | ||
25 | struct 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 */ | |
334e5f56 ML |
37 | bool readonly; /* is FS readonly */ |
38 | bool unstable; | |
7d17c02a ML |
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; | |
334e5f56 | 49 | bool cache_clean; |
7d17c02a ML |
50 | struct work_struct flush_work; |
51 | struct timer_list timer; | |
52 | ||
7d17c02a ML |
53 | /* Geometry stuff */ |
54 | int heads; | |
55 | int sectors; | |
56 | int cylinders; | |
57 | ||
58 | struct attribute_group *disk_attributes; | |
59 | }; | |
60 | ||
61 | struct 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 3 | |
70 | ||
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 | ||
7d17c02a ML |
83 | static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block, |
84 | int put_free); | |
85 | static void sm_mark_block_bad(struct sm_ftl *ftl, int zone_num, int block); | |
86 | ||
87 | static int sm_recheck_media(struct sm_ftl *ftl); |