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