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author | trhodes <trhodes@FreeBSD.org> | 2002-12-30 22:54:29 +0000 |
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committer | trhodes <trhodes@FreeBSD.org> | 2002-12-30 22:54:29 +0000 |
commit | c7f348eb8636124418dedec7a02d761df7f431c4 (patch) | |
tree | 92ee833d84dcf4af1cb316f85ab22fe1e5e50feb /share | |
parent | 7b4c495f8b0eb8f876c4c41c5fff2a384a66b9b8 (diff) | |
download | FreeBSD-src-c7f348eb8636124418dedec7a02d761df7f431c4.zip FreeBSD-src-c7f348eb8636124418dedec7a02d761df7f431c4.tar.gz |
Actually cvs add the ciss.4 file...
Diffstat (limited to 'share')
-rw-r--r-- | share/man/man4/ciss.4 | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/share/man/man4/ciss.4 b/share/man/man4/ciss.4 new file mode 100644 index 0000000..e5ac3b0 --- /dev/null +++ b/share/man/man4/ciss.4 @@ -0,0 +1,86 @@ +.\" $FreeBSD$ +.\" Written by Tom Rhodes +.\" This file is in the public domain. +.\" +.Dd December 29, 2002 +.Dt CISS 4 +.Os +.Sh NAME +.Nm ciss +.Nd Common Interface for SCSI-3 Support driver. +.Sh SYNOPSIS +For one or more adapters: +.Cd device scbus +.Cd device ciss +.Sh DESCRIPTION +.Pp +The +.Nm +driver claims to provide a common interface between generic SCSI +transports and intelligent host adapters. +.Pp +The +.Nm +driver supports +.Em CISS +as defined in the document entitled +.Dq CISS Command Interface for SCSI-3 Support Open Specification , +Version 1.04, +Valence Number 1, dated 20001127, produced by Compaq Computer +Corporation. +.Pp +We provide a shim layer between the +.Nm +interface and CAM, +offloading most of the queueing and being-a-disk chores onto CAM. +Entry to the driver is via the PCI bus attachment +.Fa ciss_probe , +.Fa ciss_attach , +etc and via the CAM interface +.Fa ciss_cam_action , +and +.Fa ciss_cam_poll . +The Compaq +.Nm +adapters require faked responses to get reasonable +behavior out of them. +In addition, the +.Nm +command set is by no means adequate to support the functionality of a RAID controller, +and thus the supported Compaq adapters utilize portions of the +control protocol from earlier Compaq adapter families. +.Pp +Currently +.Nm +only supports the +.Dq simple +transport layer over PCI. +This interface (ab)uses the I2O register set (specifically the post +queues) to exchange commands with the adapter. +Other interfaces are available, but we aren't supposed to know about them, +and it is dubious whether they would provide major performance improvements +except under extreme load. +.Pp +The currently supported controllers include: +.Pp +.Bl -tag -compact -width "Compaq Smart Array 5* series" +.It Compaq Smart Array 5300 +.It Compaq Smart Array 532 +.It Compaq Smart Array 5i +.El +.Sh SEE ALSO +.Xr cam 4 , +.Xr pass 4 , +.Xr xpt 4 , +.Xr camcontrol 8 , +.Pp +.Dq CISS Command Interface for SCSI-3 Support Open Specification, Version 1.04, +Valence Number 1, dated 20001127, produced by Compaq Computer Corporation. +.Sh AUTHORS +The +.Nm +driver was written by +.An Mike Smith Aq msmith@FreeBSD.org . +This manual page was written by +.An Tom Rhodes Aq trhodes@FreeBSD.org +derived and derived from his comments. |