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 @@
+/*
+ * $Id: blktrans.h,v 1.5 2003/06/23 12:00:08 dwmw2 Exp $
+ *
+ * (C) 2003 David Woodhouse <dwmw2@infradead.org>
+ *
+ * Interface to Linux block layer for MTD 'translation layers'.
+ *
+ */
+
+#ifndef __MTD_TRANS_H__
+#define __MTD_TRANS_H__
+
+#include <asm/semaphore.h>
+
+struct hd_geometry;
+struct mtd_info;
+struct mtd_blktrans_ops;
+struct file;
+struct inode;
+
+struct mtd_blktrans_dev {
+        struct mtd_blktrans_ops *tr;
+        struct list_head list;
+        struct mtd_info *mtd;
+        struct semaphore sem;
+        int devnum;
+        int blksize;
+        unsigned long size;
+        int readonly;
+        void *blkcore_priv; /* gendisk in 2.5, devfs_handle in 2.4 */
+};
+
+struct blkcore_priv; /* Differs for 2.4 and 2.5 kernels; private */
+
+struct mtd_blktrans_ops {
+        char *name;
+        int major;
+        int part_bits;
+
+        /* Access functions */
+        int (*readsect)(struct mtd_blktrans_dev *dev,
+                    unsigned long block, char *buffer);
+        int (*writesect)(struct mtd_blktrans_dev *dev,
+                     unsigned long block, char *buffer);
+
+        /* Block layer ioctls */
+        int (*getgeo)(struct mtd_blktrans_dev *dev, struct hd_geometry *geo);
+        int (*flush)(struct mtd_blktrans_dev *dev);
+
+        /* Called with mtd_table_mutex held; no race with add/remove */
+        int (*open)(struct mtd_blktrans_dev *dev);
+        int (*release)(struct mtd_blktrans_dev *dev);
+
+        /* Called on {de,}registration and on subsequent addition/removal
+           of devices, with mtd_table_mutex held. */
+        void (*add_mtd)(struct mtd_blktrans_ops *tr, struct mtd_info *mtd);
+        void (*remove_dev)(struct mtd_blktrans_dev *dev);
+
+        struct list_head devs;
+        struct list_head list;
+        struct module *owner;
+
+        struct mtd_blkcore_priv *blkcore_priv;
+};
+
+extern int register_mtd_blktrans(struct mtd_blktrans_ops *tr);
+extern int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr);
+extern int add_mtd_blktrans_dev(struct mtd_blktrans_dev *dev);
+extern int del_mtd_blktrans_dev(struct mtd_blktrans_dev *dev);
+                                 
+
+#endif /* __MTD_TRANS_H__ */