Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...

[sfrench/cifs-2.6.git] / Documentation / scsi / st.txt

diff --git a/Documentation/scsi/st.txt b/Documentation/scsi/st.txt
index 3c12422f7f41bf67cc6d365937090a81176eb0e0..40752602c0504b65c5210765924be22026e79934 100644 (file)
--- a/Documentation/scsi/st.txt
+++ b/Documentation/scsi/st.txt
@@ -1,8 +1,8 @@
 This file contains brief information about the SCSI tape driver.
-The driver is currently maintained by Kai Mäkisara (email
+The driver is currently maintained by Kai Mäkisara (email
 Kai.Makisara@kolumbus.fi)
 
-Last modified: Mon Mar  7 21:14:44 2005 by kai.makisara
+Last modified: Sun Feb 24 21:59:07 2008 by kai.makisara
 
 
 BASICS
@@ -133,6 +133,11 @@ the defaults set by the user. The value -1 means the default is not set. The
 file 'dev' contains the device numbers corresponding to this device. The links
 'device' and 'driver' point to the SCSI device and driver entries.
 
+Each directory also contains the entry 'options' which shows the currently
+enabled driver and mode options. The value in the file is a bit mask where the
+bit definitions are the same as those used with MTSETDRVBUFFER in setting the
+options.
+
 A link named 'tape' is made from the SCSI device directory to the class
 directory corresponding to the mode 0 auto-rewind device (e.g., st0). 
 
@@ -372,6 +377,11 @@ MTSETDRVBUFFER
             MT_ST_SYSV sets the SYSV semantics (mode)
             MT_ST_NOWAIT enables immediate mode (i.e., don't wait for
                the command to finish) for some commands (e.g., rewind)
+            MT_ST_SILI enables setting the SILI bit in SCSI commands when
+               reading in variable block mode to enhance performance when
+               reading blocks shorter than the byte count; set this only
+               if you are sure that the drive supports SILI and the HBA
+               correctly returns transfer residuals
             MT_ST_DEBUGGING debugging (global; debugging must be
                compiled into the driver)
        MT_ST_SETBOOLEANS