[SCSI] hptiop: Add RR44xx adapter support

[safe/jmp/linux-2.6] / Documentation / scsi / st.txt

diff --git a/Documentation/scsi/st.txt b/Documentation/scsi/st.txt
index 66ba3ad..4075260 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). 
 
@@ -249,7 +254,7 @@ BOOT TIME CONFIGURATION
 
 If the driver is compiled into the kernel, the same parameters can be
 also set using, e.g., the LILO command line. The preferred syntax is
-is to use the same keyword used when loading as module but prepended
+to use the same keyword used when loading as module but prepended
 with 'st.'. For instance, to set the maximum number of scatter/gather
 segments, the parameter 'st.max_sg_segs=xx' should be used (xx is the
 number of scatter/gather segments).
@@ -261,7 +266,7 @@ pairs are separated with a comma (no spaces allowed). A colon can be
 used instead of the equal mark. The definition is prepended by the
 string st=. Here is an example:
 
-       st=buffer_kbs:64,write_threhold_kbs:60
+       st=buffer_kbs:64,write_threshold_kbs:60
 
 The following syntax used by the old kernel versions is also supported:
 
@@ -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