.\"	$NetBSD: cac.4,v 1.14 2019/05/08 07:44:28 cnst Exp $
.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Andrew Doran.
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.Dd May 8, 2019
.Dt CAC 4
.Os
.Sh NAME
.Nm cac
.Nd
.Tn Compaq array controller driver
.Sh SYNOPSIS
.Cd "cac* at eisa? slot ?"
.Cd "cac* at pci? dev ? function ?"
.Sh DESCRIPTION
The
.Nm
driver provides basic message passing and DMA support for Compaq array
controllers.
Disk arrays are supported by the
.Nm ld
driver.
Monitoring of volume status is supported through the
.Xr bioctl 8
and
.Xr envstat 8
utilities, as well as the
.Xr powerd 8
monitoring daemon.
.Sh HARDWARE
The
.Nm
driver provides support for the following controllers:
.Pp
.Bl -tag -width Dv -offset indent -compact
.It Tn Compaq Integrated Array
.It Tn Compaq IAES
.It Tn Compaq IDA
.It Tn Compaq IDA-2
.It Tn Compaq RAID LC2
.It Tn Compaq Smart Array 221
.It Tn Compaq Smart Array 3100ES
.It Tn Compaq Smart Array 3200
.It Tn Compaq Smart Array 4200
.It Tn Compaq Smart Array 4250ES
.It Tn Compaq Smart Array 431
.It Tn Compaq SMART
.It Tn Compaq SMART-2/E
.It Tn Compaq SMART-2/P
.It Tn Compaq SMART-2DH
.It Tn Compaq SMART-2SL
.El
.Sh SEE ALSO
.Xr bio 4 ,
.Xr envsys 4 ,
.Xr intro 4 ,
.Xr ld 4 ,
.Xr bioctl 8 ,
.Xr envstat 8 ,
.Xr powerd 8
.Sh HISTORY
The
.Nm cac
driver first appeared in
.Nx 1.5 .
Support for volume monitoring through
.Xr bio 4
and
.Xr envsys 4
was added in
.Nx 5.0 .