[S390] cio: Update documentation.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 16 insertions, 5 deletions

diff --git a/Documentation/DocBook/s390-drivers.tmpl b/Documentation/DocBook/s390-drivers.tmpl
index 3d2f31b99dd9..4acc73240a6d 100644
--- a/Documentation/DocBook/s390-drivers.tmpl
+++ b/Documentation/DocBook/s390-drivers.tmpl
@@ -59,7 +59,7 @@
    <title>Introduction</title>
   <para>
     This document describes the interfaces available for device drivers that
-    drive s390 based channel attached devices. This includes interfaces for
+    drive s390 based channel attached I/O devices. This includes interfaces for
     interaction with the hardware and interfaces for interacting with the
     common driver core. Those interfaces are provided by the s390 common I/O
     layer.
@@ -86,9 +86,10 @@
         The ccw bus typically contains the majority of devices available to
         a s390 system. Named after the channel command word (ccw), the basic
         command structure used to address its devices, the ccw bus contains
-        so-called channel attached devices. They are addressed via subchannels,
-        visible on the css bus. A device driver, however, will never interact
-        with the subchannel directly, but only via the device on the ccw bus,
+        so-called channel attached devices. They are addressed via I/O
+        subchannels, visible on the css bus. A device driver for
+        channel-attached devices, however, will never interact  with the
+        subchannel directly, but only via the I/O device on the ccw bus,
         the ccw device.
   </para>
     <sect1 id="channelIO">
@@ -116,7 +117,6 @@
 !Iinclude/asm-s390/ccwdev.h
 !Edrivers/s390/cio/device.c
 !Edrivers/s390/cio/device_ops.c
-!Edrivers/s390/cio/airq.c
     </sect1>
     <sect1 id="cmf">
      <title>The channel-measurement facility</title>
@@ -147,4 +147,15 @@
    </sect1>
   </chapter>
 
+  <chapter id="genericinterfaces">
+   <title>Generic interfaces</title>
+  <para>
+        Some interfaces are available to other drivers that do not necessarily
+        have anything to do with the busses described above, but still are
+        indirectly using basic infrastructure in the common I/O layer.
+        One example is the support for adapter interrupts.
+  </para>
+!Edrivers/s390/cio/airq.c
+  </chapter>
+
 </book>