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4
5
6 #ifndef __MTD_TRANS_H__
7 #define __MTD_TRANS_H__
8
9 #include <linux/mutex.h>
10 #include <linux/kref.h>
11 #include <linux/sysfs.h>
12
13 struct hd_geometry;
14 struct mtd_info;
15 struct mtd_blktrans_ops;
16 struct file;
17 struct inode;
18
19 struct mtd_blktrans_dev {
20 struct mtd_blktrans_ops *tr;
21 struct list_head list;
22 struct mtd_info *mtd;
23 struct mutex lock;
24 int devnum;
25 bool bg_stop;
26 unsigned long size;
27 int readonly;
28 int open;
29 struct kref ref;
30 struct gendisk *disk;
31 struct attribute_group *disk_attributes;
32 struct request_queue *rq;
33 struct list_head rq_list;
34 struct blk_mq_tag_set *tag_set;
35 spinlock_t queue_lock;
36 void *priv;
37 fmode_t file_mode;
38 };
39
40 struct mtd_blktrans_ops {
41 char *name;
42 int major;
43 int part_bits;
44 int blksize;
45 int blkshift;
46
47
48 int (*readsect)(struct mtd_blktrans_dev *dev,
49 unsigned long block, char *buffer);
50 int (*writesect)(struct mtd_blktrans_dev *dev,
51 unsigned long block, char *buffer);
52 int (*discard)(struct mtd_blktrans_dev *dev,
53 unsigned long block, unsigned nr_blocks);
54 void (*background)(struct mtd_blktrans_dev *dev);
55
56
57 int (*getgeo)(struct mtd_blktrans_dev *dev, struct hd_geometry *geo);
58 int (*flush)(struct mtd_blktrans_dev *dev);
59
60
61 int (*open)(struct mtd_blktrans_dev *dev);
62 void (*release)(struct mtd_blktrans_dev *dev);
63
64
65
66 void (*add_mtd)(struct mtd_blktrans_ops *tr, struct mtd_info *mtd);
67 void (*remove_dev)(struct mtd_blktrans_dev *dev);
68
69 struct list_head devs;
70 struct list_head list;
71 struct module *owner;
72 };
73
74 extern int register_mtd_blktrans(struct mtd_blktrans_ops *tr);
75 extern int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr);
76 extern int add_mtd_blktrans_dev(struct mtd_blktrans_dev *dev);
77 extern int del_mtd_blktrans_dev(struct mtd_blktrans_dev *dev);
78 extern int mtd_blktrans_cease_background(struct mtd_blktrans_dev *dev);
79
80
81 #endif