93 lines
3.4 KiB
Groff
93 lines
3.4 KiB
Groff
.\" $NetBSD: pcibios.4,v 1.3 2000/04/28 19:15:15 uch Exp $
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.\"
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.\" Copyright (c) 1999 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Lennart Augustsson.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd February 27, 2000
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.Dt PCIBIOS 4
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.Os
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.Sh NAME
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.Nm pcibios
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.Nd introduction to PCI BIOS support
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.Sh SYNOPSIS
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.Cd "options PCIBIOS"
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.Cd "#options PCIBIOSVERBOSE"
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.Cd "options PCIBIOS_INTR_FIXUP"
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.Cd "#options PCIBIOS_IRQS_HINT=""0x0a00"" #IRQ 9,11"
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.Cd "#options PCIINTR_DEBUG"
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.Cd "options PCIBIOS_BUS_FIXUP"
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.Cd "options PCIBIOS_ADDR_FIXUP"
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.Pp
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.Sh INTRODUCTION
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.Nx
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provides support for setting up PCI controllers, bridges, and devices
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using information extracted from the BIOS.
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.Pp
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Ideally, the boot firmware of a machine (a.k.a. BIOS) should set
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up all PCI devices; assigning them I/O and memory addresses and
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interrupts. Alas, this does not always happen, so there is some
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PC specific code that can do the initialization when
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.Nx
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boots.
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.Pp
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Options:
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.Bl -tag -width PCIBIOS_INTR_FIXUP -offset 3n -compact
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.It Nm PCIBIOS
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turn on the PCI BIOS support.
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.It Nm PCIBIOSVERBOSE
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make the setup procedure verbose.
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.It Nm PCIBIOS_INTR_FIXUP
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fixup PCI interrupt routing.
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.It Nm PCIBIOS_IRQS_HINT
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user can give the hint of IRQs. when PCI BIOS support can't
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guess adequeate IRQ for the device, it is used.
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.It Nm PCIINTR_DEBUG
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super-verbose PCI interrupt fixup.
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.It Nm PCIBIOS_BUS_FIXUP
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fixup PCI bus numbering; needed for many
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.Xr cardbus 4
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bridges.
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.It Nm PCIBIOS_ADDR_FIXUP
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fixup PCI I/O and memory addresses.
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.El
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.Sh BUGS
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.Sh SEE ALSO
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.Xr cardbus 4 ,
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.Xr pci 4
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.Sh HISTORY
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The
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.Nm
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code appeared in
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.Nx 1.5 .
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