Document the new passthrough interface.

1 files changed, 10 insertions, 1 deletions

diff --git a/share/man/man4/ciss.4 b/share/man/man4/ciss.4
index 98dd4fe..1f55fff 100644
--- a/share/man/man4/ciss.4
+++ b/share/man/man4/ciss.4
@@ -60,7 +60,15 @@ and it is dubious whether they would provide major performance improvements
 except under extreme load.
 .Pp
 Non-disk devices (such as internal DATs and devices
-attached to the external SCSI bus) are not yet supported.
+attached to the external SCSI bus) are supported as normal CAM devices
+provided that they are exported by the controller firmware and are not
+marked as being masked.  Masked devices can be exposed by setting the
+.Va hw.ciss.expose_hidden_physical
+tunable to non-zero at boot time.  Direct Access devices (such as disk
+drives) are only exposed as
+.Xr pass 4
+devices.  Hot-insertion and removal of devices is supported but a bus
+rescan might be necessary.
 .Pp
 Supported controllers include:
 .Pp
@@ -96,6 +104,7 @@ HP Modular Smart Array 500 (MSA500)
 .Xr cam 4 ,
 .Xr pass 4 ,
 .Xr xpt 4 ,
+.Xr loader.conf 5 ,
 .Xr camcontrol 8
 .Rs
 .%T "CISS Command Interface for SCSI-3 Support Open Specification, Version 1.04, Valence Number 1"