xref: /freebsd/share/man/man4/ciss.4 (revision 9f9e9e1b8dc24cba5994bcb9dd8f519d8050834b)
117596f06STom Rhodes.\" $FreeBSD$
217596f06STom Rhodes.\" Written by Tom Rhodes
317596f06STom Rhodes.\" This file is in the public domain.
417596f06STom Rhodes.\"
59f9e9e1bSRalf S. Engelschall.Dd November 3, 2005
617596f06STom Rhodes.Dt CISS 4
717596f06STom Rhodes.Os
817596f06STom Rhodes.Sh NAME
917596f06STom Rhodes.Nm ciss
10ace5be68SRuslan Ermilov.Nd Common Interface for SCSI-3 Support driver
1117596f06STom Rhodes.Sh SYNOPSIS
12ace5be68SRuslan Ermilov.Cd "device scbus"
13ace5be68SRuslan Ermilov.Cd "device ciss"
1417596f06STom Rhodes.Sh DESCRIPTION
1517596f06STom RhodesThe
1617596f06STom Rhodes.Nm
1717596f06STom Rhodesdriver claims to provide a common interface between generic SCSI
1817596f06STom Rhodestransports and intelligent host adapters.
1917596f06STom Rhodes.Pp
2017596f06STom RhodesThe
2117596f06STom Rhodes.Nm
2217596f06STom Rhodesdriver supports
2317596f06STom Rhodes.Em CISS
2417596f06STom Rhodesas defined in the document entitled
25ace5be68SRuslan Ermilov.%T "CISS Command Interface for SCSI-3 Support Open Specification, Version 1.04, Valence Number 1" ,
26ace5be68SRuslan Ermilovdated 2000/11/27, produced by Compaq Computer Corporation.
2717596f06STom Rhodes.Pp
2817596f06STom RhodesWe provide a shim layer between the
2917596f06STom Rhodes.Nm
30ace5be68SRuslan Ermilovinterface and
31ace5be68SRuslan Ermilov.Xr CAM 4 ,
3217596f06STom Rhodesoffloading most of the queueing and being-a-disk chores onto CAM.
3317596f06STom RhodesEntry to the driver is via the PCI bus attachment
34ace5be68SRuslan Ermilov.Fn ciss_probe ,
35ace5be68SRuslan Ermilov.Fn ciss_attach ,
365203edcdSRuslan Ermilovetc.\& and via the CAM interface
37ace5be68SRuslan Ermilov.Fn ciss_cam_action ,
3817596f06STom Rhodesand
39ace5be68SRuslan Ermilov.Fn ciss_cam_poll .
4017596f06STom RhodesThe Compaq
4117596f06STom Rhodes.Nm
4217596f06STom Rhodesadapters require faked responses to get reasonable
4317596f06STom Rhodesbehavior out of them.
4417596f06STom RhodesIn addition, the
4517596f06STom Rhodes.Nm
46ace5be68SRuslan Ermilovcommand set is by no means adequate to support the functionality
47ace5be68SRuslan Ermilovof a RAID controller,
4817596f06STom Rhodesand thus the supported Compaq adapters utilize portions of the
4917596f06STom Rhodescontrol protocol from earlier Compaq adapter families.
5017596f06STom Rhodes.Pp
5117596f06STom RhodesCurrently
5217596f06STom Rhodes.Nm
5317596f06STom Rhodesonly supports the
5417596f06STom Rhodes.Dq simple
5517596f06STom Rhodestransport layer over PCI.
5617596f06STom RhodesThis interface (ab)uses the I2O register set (specifically the post
5717596f06STom Rhodesqueues) to exchange commands with the adapter.
58ae5c97aaSTom RhodesOther interfaces are available, but we are not supposed to know about them,
5917596f06STom Rhodesand it is dubious whether they would provide major performance improvements
6017596f06STom Rhodesexcept under extreme load.
61ace5be68SRuslan Ermilov.Pp
62ace5be68SRuslan ErmilovNon-disk devices (such as internal DATs and devices
63a315d43aSScott Longattached to the external SCSI bus) are supported as normal CAM devices
64a315d43aSScott Longprovided that they are exported by the controller firmware and are not
655203edcdSRuslan Ermilovmarked as being masked.
665203edcdSRuslan ErmilovMasked devices can be exposed by setting the
67a315d43aSScott Long.Va hw.ciss.expose_hidden_physical
685203edcdSRuslan Ermilovtunable to non-zero at boot time.
695203edcdSRuslan ErmilovDirect Access devices (such as disk
70a315d43aSScott Longdrives) are only exposed as
71a315d43aSScott Long.Xr pass 4
725203edcdSRuslan Ermilovdevices.
735203edcdSRuslan ErmilovHot-insertion and removal of devices is supported but a bus
74a315d43aSScott Longrescan might be necessary.
751b3f128dSSimon L. B. Nielsen.Sh HARDWARE
761b3f128dSSimon L. B. NielsenControllers supported by the
771b3f128dSSimon L. B. Nielsen.Nm
781b3f128dSSimon L. B. Nielsendriver include:
7917596f06STom Rhodes.Pp
801b3f128dSSimon L. B. Nielsen.Bl -bullet -compact
81ace5be68SRuslan Ermilov.It
82ace5be68SRuslan ErmilovCompaq Smart Array 5300
83ace5be68SRuslan Ermilov.It
84ace5be68SRuslan ErmilovCompaq Smart Array 532
85ace5be68SRuslan Ermilov.It
86ace5be68SRuslan ErmilovCompaq Smart Array 5i
8715d25d32SSimon L. B. Nielsen.It
8815d25d32SSimon L. B. NielsenHP Smart Array 5312
8915d25d32SSimon L. B. Nielsen.It
9015d25d32SSimon L. B. NielsenHP Smart Array 6i
9115d25d32SSimon L. B. Nielsen.It
9215d25d32SSimon L. B. NielsenHP Smart Array 641
9315d25d32SSimon L. B. Nielsen.It
9415d25d32SSimon L. B. NielsenHP Smart Array 642
9515d25d32SSimon L. B. Nielsen.It
9615d25d32SSimon L. B. NielsenHP Smart Array 6400
9715d25d32SSimon L. B. Nielsen.It
9815d25d32SSimon L. B. NielsenHP Smart Array 6400 EM
99c6131460SPaul Saab.It
1009f9e9e1bSRalf S. EngelschallHP Smart Array E400
1010abff1d4SSimon L. B. Nielsen.It
1029f9e9e1bSRalf S. EngelschallHP Smart Array P600
1039f9e9e1bSRalf S. Engelschall.It
1049f9e9e1bSRalf S. EngelschallHP Smart Array P800
1050abff1d4SSimon L. B. Nielsen.It
106c6131460SPaul SaabHP Modular Smart Array 20 (MSA20)
107c6131460SPaul Saab.It
108c6131460SPaul SaabHP Modular Smart Array 500 (MSA500)
10917596f06STom Rhodes.El
11017596f06STom Rhodes.Sh SEE ALSO
11117596f06STom Rhodes.Xr cam 4 ,
11217596f06STom Rhodes.Xr pass 4 ,
11317596f06STom Rhodes.Xr xpt 4 ,
114a315d43aSScott Long.Xr loader.conf 5 ,
115ace5be68SRuslan Ermilov.Xr camcontrol 8
116ace5be68SRuslan Ermilov.Rs
117ace5be68SRuslan Ermilov.%T "CISS Command Interface for SCSI-3 Support Open Specification, Version 1.04, Valence Number 1"
118ace5be68SRuslan Ermilov.%D 2000/11/27
119ace5be68SRuslan Ermilov.%Q "Compaq Computer Corporation"
120ace5be68SRuslan Ermilov.Re
12117596f06STom Rhodes.Sh AUTHORS
122ace5be68SRuslan Ermilov.An -nosplit
12317596f06STom RhodesThe
12417596f06STom Rhodes.Nm
12517596f06STom Rhodesdriver was written by
12617596f06STom Rhodes.An Mike Smith Aq msmith@FreeBSD.org .
127ace5be68SRuslan Ermilov.Pp
128ae5c97aaSTom RhodesThis manual page is based on his comments and was written by
129ae5c97aaSTom Rhodes.An Tom Rhodes Aq trhodes@FreeBSD.org .
130