From 405954a851edf70594614eae4375a90631805b0d Mon Sep 17 00:00:00 2001
From: soda <soda@NetBSD.org>
Date: Thu, 10 Aug 2000 21:19:42 +0000
Subject: [PATCH] describe options PCIBIOS_INTR_GUESS

---
 share/man/man4/man4.i386/pcibios.4 | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/share/man/man4/man4.i386/pcibios.4 b/share/man/man4/man4.i386/pcibios.4
index a19dd872acd2..82eddb07f21f 100644
--- a/share/man/man4/man4.i386/pcibios.4
+++ b/share/man/man4/man4.i386/pcibios.4
@@ -1,4 +1,4 @@
-.\" $NetBSD: pcibios.4,v 1.7 2000/08/03 13:32:39 soda Exp $
+.\" $NetBSD: pcibios.4,v 1.8 2000/08/10 21:19:42 soda Exp $
 .\"
 .\" Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -48,6 +48,7 @@
 .Cd "options   PCIBIOS_INTR_FIXUP"
 .Cd "#options  PCIBIOS_IRQS_HINT=0x0a00 #IRQ 9,11"
 .Cd "#options  PCIBIOS_INTR_FIXUP_FORCE"
+.Cd "options   PCIBIOS_INTR_GUESS"
 .Cd "#options  PCIINTR_DEBUG"
 .Pp
 .Sh INTRODUCTION
@@ -211,6 +212,23 @@ The necessity of this option is doubtful, and we may
 remove this option in the future. If you find that this
 option is worth preserving, please report it with send-pr.
 
+.It Nm PCIBIOS_INTR_GUESS
+make
+.Em PCIBIOS_INTR_FIXUP
+work with unknown interrupt router.
+.Pp
+If a PCI interrupt router is not known, normally interrupt
+configuraion will not be touched.
+
+But if
+.Em PCIBIOS_INTR_GUESS
+is specified in addition to the
+.Em PCIBIOS_INTR_FIXUP ,
+and if a PCI interrupt routing table entry indicates that only
+one IRQ is available for the entry, the IRQ is assumed to be already
+connected to the device, and corresponding PCI Interrupt
+Configuration Register will be configured accordingly.
+
 .It Nm PCIINTR_DEBUG
 make the
 .Em PCIBIOS_INTR_FIXUP