[PATCH] 2.5.29 IDE 109

 - Include first cut by Adam J. Richter on proper lock protection for
   tuning functions.

 - Rename ide_register_subdriver() to ata_register_device() and
   ide_unregister_subdriver() accordingly to ata_unregister_device(),
   since this is reflecting better what those functions are about.

 - Remove tons of "curicum vite" style useless documentation here and
   there.

1 files changed, 47 insertions, 3 deletions

diff --git a/Documentation/ide.txt b/Documentation/ide.txt
index 9da199ed4108..3adb7cabfbcd 100644
--- a/Documentation/ide.txt
+++ b/Documentation/ide.txt
@@ -1,9 +1,6 @@
 
-
-
 	Information regarding the Enhanced IDE drive in Linux 2.5
 
-
 ==============================================================================
 
    
@@ -303,6 +300,53 @@ Everything else is rejected with a "BAD OPTION" message.
 
 ================================================================================
 
+IDE ATAPI streaming tape driver
+-------------------------------
+
+This driver is a part of the Linux ide driver and works in co-operation
+with linux/drivers/block/ide.c.
+
+The driver, in co-operation with ide.c, basically traverses the
+request-list for the block device interface. The character device
+interface, on the other hand, creates new requests, adds them
+to the request-list of the block device, and waits for their completion.
+
+Pipelined operation mode is now supported on both reads and writes.
+
+The block device major and minor numbers are determined from the
+tape's relative position in the ide interfaces, as explained in ide.c.
+
+The character device interface consists of the following devices:
+
+ ht0		major 37, minor 0	first  IDE tape, rewind on close.
+ ht1		major 37, minor 1	second IDE tape, rewind on close.
+ ...
+ nht0		major 37, minor 128	first  IDE tape, no rewind on close.
+ nht1		major 37, minor 129	second IDE tape, no rewind on close.
+ ...
+
+Run linux/scripts/MAKEDEV.ide to create the above entries.
+
+The general magnetic tape commands compatible interface, as defined by
+include/linux/mtio.h, is accessible through the character device.
+
+General ide driver configuration options, such as the interrupt-unmask
+flag, can be configured by issuing an ioctl to the block device interface,
+as any other ide device.
+
+Our own ide-tape ioctl's can be issued to either the block device or
+the character device interface.
+
+Maximal throughput with minimal bus load will usually be achieved in the
+following scenario:
+
+	1.	ide-tape is operating in the pipelined operation mode.
+	2.	No buffering is performed by the user backup program.
+
+
+
+================================================================================
+
 Some Terminology
 ----------------
 IDE = Integrated Drive Electronics, meaning that each drive has a built-in