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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/mtd/blktrans.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/linux/mtd/blktrans.h')
-rw-r--r--include/linux/mtd/blktrans.h72
1 files changed, 72 insertions, 0 deletions
diff --git a/include/linux/mtd/blktrans.h b/include/linux/mtd/blktrans.h
new file mode 100644
index 000000000000..4ebc2e5a16e2
--- /dev/null
+++ b/include/linux/mtd/blktrans.h
@@ -0,0 +1,72 @@
1/*
2 * $Id: blktrans.h,v 1.5 2003/06/23 12:00:08 dwmw2 Exp $
3 *
4 * (C) 2003 David Woodhouse <dwmw2@infradead.org>
5 *
6 * Interface to Linux block layer for MTD 'translation layers'.
7 *
8 */
9
10#ifndef __MTD_TRANS_H__
11#define __MTD_TRANS_H__
12
13#include <asm/semaphore.h>
14
15struct hd_geometry;
16struct mtd_info;
17struct mtd_blktrans_ops;
18struct file;
19struct inode;
20
21struct mtd_blktrans_dev {
22 struct mtd_blktrans_ops *tr;
23 struct list_head list;
24 struct mtd_info *mtd;
25 struct semaphore sem;
26 int devnum;
27 int blksize;
28 unsigned long size;
29 int readonly;
30 void *blkcore_priv; /* gendisk in 2.5, devfs_handle in 2.4 */
31};
32
33struct blkcore_priv; /* Differs for 2.4 and 2.5 kernels; private */
34
35struct mtd_blktrans_ops {
36 char *name;
37 int major;
38 int part_bits;
39
40 /* Access functions */
41 int (*readsect)(struct mtd_blktrans_dev *dev,
42 unsigned long block, char *buffer);
43 int (*writesect)(struct mtd_blktrans_dev *dev,
44 unsigned long block, char *buffer);
45
46 /* Block layer ioctls */
47 int (*getgeo)(struct mtd_blktrans_dev *dev, struct hd_geometry *geo);
48 int (*flush)(struct mtd_blktrans_dev *dev);
49
50 /* Called with mtd_table_mutex held; no race with add/remove */
51 int (*open)(struct mtd_blktrans_dev *dev);
52 int (*release)(struct mtd_blktrans_dev *dev);
53
54 /* Called on {de,}registration and on subsequent addition/removal
55 of devices, with mtd_table_mutex held. */
56 void (*add_mtd)(struct mtd_blktrans_ops *tr, struct mtd_info *mtd);
57 void (*remove_dev)(struct mtd_blktrans_dev *dev);
58
59 struct list_head devs;
60 struct list_head list;
61 struct module *owner;
62
63 struct mtd_blkcore_priv *blkcore_priv;
64};
65
66extern int register_mtd_blktrans(struct mtd_blktrans_ops *tr);
67extern int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr);
68extern int add_mtd_blktrans_dev(struct mtd_blktrans_dev *dev);
69extern int del_mtd_blktrans_dev(struct mtd_blktrans_dev *dev);
70
71
72#endif /* __MTD_TRANS_H__ */