1*67d4b82eSjmc.\" $OpenBSD: fhc.4,v 1.11 2018/06/18 06:06:52 jmc Exp $ 27e0fd02eSjason.\" 37e0fd02eSjason.\" Copyright (c) 2004 Jason L. Wright (jason@thought.net) 47e0fd02eSjason.\" All rights reserved. 57e0fd02eSjason.\" 67e0fd02eSjason.\" Redistribution and use in source and binary forms, with or without 77e0fd02eSjason.\" modification, are permitted provided that the following conditions 87e0fd02eSjason.\" are met: 97e0fd02eSjason.\" 1. Redistributions of source code must retain the above copyright 107e0fd02eSjason.\" notice, this list of conditions and the following disclaimer. 117e0fd02eSjason.\" 2. Redistributions in binary form must reproduce the above copyright 127e0fd02eSjason.\" notice, this list of conditions and the following disclaimer in the 137e0fd02eSjason.\" documentation and/or other materials provided with the distribution. 147e0fd02eSjason.\" 157e0fd02eSjason.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 167e0fd02eSjason.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 177e0fd02eSjason.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 187e0fd02eSjason.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 197e0fd02eSjason.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 207e0fd02eSjason.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 217e0fd02eSjason.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 227e0fd02eSjason.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 237e0fd02eSjason.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 247e0fd02eSjason.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 257e0fd02eSjason.\" POSSIBILITY OF SUCH DAMAGE. 267e0fd02eSjason.\" 27*67d4b82eSjmc.Dd $Mdocdate: June 18 2018 $ 287e0fd02eSjason.Dt FHC 4 sparc64 297e0fd02eSjason.Os 307e0fd02eSjason.Sh NAME 317e0fd02eSjason.Nm fhc 321efff4e7Sjmc.Nd SPARC64 FireHose controller 337e0fd02eSjason.Sh SYNOPSIS 347e0fd02eSjason.Cd "fhc* at central?" 357e0fd02eSjason.Cd "fhc* at mainbus0" 367e0fd02eSjason.Sh DESCRIPTION 377e0fd02eSjasonThe 387e0fd02eSjason.Nm 397e0fd02eSjasondevice provides support for the 401efff4e7SjmcFireHose controllers 417e0fd02eSjasonfound on Sunfire, Starfire, and Wildfire 427e0fd02eSjasonUltraSPARC systems. 437e0fd02eSjasonThese devices are used for board level 447e0fd02eSjasonfunctions on these systems. 4554e4d1e8SjasonThis device also controls an LED for each slot. 4654e4d1e8SjasonThis LED can be made to blink based on the load average on most systems 4754e4d1e8Sjasonby setting the 48aaeccf36Sderaadt.Xr sysctl 2 4954e4d1e8Sjasonvariable 5054e4d1e8Sjason.Ar machdep.led_blink 5154e4d1e8Sjasonto a non-zero value. 5254e4d1e8Sjason.Sh HARDWARE 5354e4d1e8Sjason.Ox 5454e4d1e8Sjasonincludes the following 5554e4d1e8Sjason.Nm 5654e4d1e8Sjasondrivers, sorted by driver name: 57a37c17b4Sjmc.Pp 58952ae8d7Sschwarze.Bl -tag -width environ(4) -offset ind -compact 5954e4d1e8Sjason.It Xr clkbrd 4 601efff4e7SjmcSPARC64 Clock Board 6154e4d1e8Sjason.It Xr clock 4 62*67d4b82eSjmcreal-time clock 630cf0c034Skettenis.It Xr environ 4 641efff4e7SjmcSPARC64 temperature sensor 65952ae8d7Sschwarze.It Xr zs 4 661efff4e7SjmcZilog 8530 (ZSCC) serial communications driver 6754e4d1e8Sjason.El 687e0fd02eSjason.Sh SEE ALSO 69aaeccf36Sderaadt.Xr sysctl 2 , 707e0fd02eSjason.Xr central 4 , 717e0fd02eSjason.Xr intro 4 727e0fd02eSjason.Sh HISTORY 737e0fd02eSjason.Ox 747e0fd02eSjasonsupport for the 757e0fd02eSjason.Nm 767e0fd02eSjasonfirst appeared in 777e0fd02eSjason.Ox 3.7 . 78