1 .\" Written by Tom Rhodes
2 .\" This file is in the public domain.
9 .Nd Common Interface for SCSI-3 Support driver
11 To compile this driver into the kernel,
12 place the following lines in your
13 kernel configuration file:
14 .Bd -ragged -offset indent
19 Alternatively, to load the driver as a
20 module at boot time, place the following line in
22 .Bd -literal -offset indent
28 driver claims to provide a common interface between generic SCSI
29 transports and intelligent host adapters.
35 as defined in the document entitled
36 .%T "CISS Command Interface for SCSI-3 Support Open Specification, Version 1.04, Valence Number 1" ,
37 dated 2000/11/27, produced by Compaq Computer Corporation.
39 We provide a shim layer between the
43 offloading most of the queueing and being-a-disk chores onto CAM.
44 Entry to the driver is via the PCI bus attachment
47 etc.\& and via the CAM interface
53 adapters require faked responses to get reasonable
57 command set is by no means adequate to support the functionality
59 and thus the supported Compaq adapters utilize portions of the
60 control protocol from earlier Compaq adapter families.
70 Non-disk devices (such as internal DATs and devices
71 attached to the external SCSI bus) are supported as normal CAM devices
72 provided that they are exported by the controller firmware and are not
73 marked as being masked.
74 Masked devices can be exposed by setting the
75 .Va hw.ciss.expose_hidden_physical
76 tunable to non-zero at boot time.
77 Direct Access devices (such as disk
78 drives) are only exposed as
81 Hot-insertion and removal of devices is supported and notification messages
82 will be reported to the console and logs.
84 The problem which adapter freezes with the message
85 .Dq ADAPTER HEARTBEAT FAILED
86 might be solved by updating the firmware and/or setting the
87 .Va hw.ciss.nop_message_heartbeat
88 tunable to non-zero at boot time.
90 Controllers supported by the
96 Compaq Smart Array 5300 (simple mode only)
98 Compaq Smart Array 532
100 Compaq Smart Array 5i
112 HP Smart Array 6400 EM
166 HP Modular Smart Array 20 (MSA20)
168 HP Modular Smart Array 500 (MSA500)
177 .%T "CISS Command Interface for SCSI-3 Support Open Specification, Version 1.04, Valence Number 1"
179 .%Q "Compaq Computer Corporation"
185 driver was written by
186 .An Mike Smith Aq Mt msmith@FreeBSD.org .
188 This manual page is based on his comments and was written by
189 .An Tom Rhodes Aq Mt trhodes@FreeBSD.org .