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Re: kern/41961: ISA devices should not attach to acpi0
The following reply was made to PR kern/41961; it has been noted by GNATS.
From: Thomas Klausner <wiz%NetBSD.org@localhost>
Cc: NetBSD bugtracking <gnats-bugs%NetBSD.org@localhost>
Subject: Re: kern/41961: ISA devices should not attach to acpi0
Date: Mon, 31 Aug 2009 16:35:33 +0200
On Mon, Aug 31, 2009 at 12:45:00PM +0000, jmcneill%invisible.ca@localhost
> There are a few possible ways to resolve this, from best to worst:
> 1. Attach the root PCI bus to acpi, and use the information in the
> ACPI decide tree to help enumerate devices on the system. This is
> the ideal approach, and will also require the most effort.
> 2. Have ACPI enumerate all ISA devices and hand it off to MD code.
> MD code in turn uses isa_attach_hook to push in a list of known
> devices to isa, and drivers are adapted using ISA_DIRECT_CONFIG.
> 3. Create a bus similar to isapnp but for ACPI devices.
> A proof of concept for option against -current can be found here:
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