.\"	$OpenBSD: ebus.4,v 1.26 2020/06/18 20:39:28 jmc Exp $
.\"	$NetBSD: ebus.4,v 1.3 2002/03/13 21:42:20 wiz Exp $
.\"
.\" Copyright (c) 1999 Matthew R. Green
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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.\" SUCH DAMAGE.
.\"
.Dd $Mdocdate: June 18 2020 $
.Dt EBUS 4 sparc64
.Os
.Sh NAME
.Nm ebus
.Nd introduction to SPARC EBus bus support
.Sh SYNOPSIS
.Cd "ebus* at pci?"
.Cd "ebus* at mainbus0"
.Sh DESCRIPTION
The
.Nm
bus is designed to provide the ability to put ISA and traditional
Intel-style peripherals in a SPARC based system with a minimal amount
of glue logic.
Typically, it is implemented in the PCIO IC from SME, which also
implements an
.Xr hme 4
compatible PCI network device
.Pf ( Ql network ) .
The
.Nm
has four DMA channels, similar to the DMA seen in the
.Xr esp 4
SCSI DMA.
.Pp
.Ox
provides support for the following devices:
.Pp
.Bl -tag -width "audioce(4)XX" -offset 3n -compact
.It Xr audioce 4
SPARC64 EBus CS4231 audio device
.It Xr auxio 4
SPARC64 auxiliary I/O
.It Xr bbc 4
SPARC64 BootBus Controller
.It Xr beeper 4
console annunciator
.It Xr clock 4
real-time clock
.It Xr com 4
serial communications interface
.It Xr comkbd 4
serial keyboard driver
.It Xr comms 4
serial mouse driver
.It Xr led 4
SPARC64 LED driver
.It Xr lom 4
lights out management
.It Xr lpt 4
parallel port driver
.It Xr pcfiic 4
Philips PCF8584 I2C controller
.It Xr pckbc 4
PC (ISA) keyboard controller driver
.It Xr pmc 4
power management controller
.It Xr power 4
power button
.It Xr sab 4
Infineon SAB82532 (ESCC2) serial communications driver
.It Xr uperf 4
performance counters driver
.It Xr wbsd 4
Winbond W83L518D/W83L519D SD memory card interface
.El
.Sh SEE ALSO
.Xr intro 4
.Rs
.%A Sun Microelectronics
.%B Peripheral Component Interconnect Input Output Controller
.%V Part\ No.:\ 802-7837-01
.%D March 1997
.%U http://www.sun.com/processors/manuals/802-7837.pdf
.Re