Re: kern/41961: ISA devices should not attach to acpi0

["Jared D. McNeill" <jmcneill%invisible.ca@localhost>]

The following reply was made to PR kern/41961; it has been noted by GNATS.

From: "Jared D. McNeill" <jmcneill%invisible.ca@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%netbsd.org@localhost,
 gnats-admin%netbsd.org@localhost,
 netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/41961: ISA devices should not attach to acpi0
Date: Mon, 31 Aug 2009 11:04:12 -0400

 On 31-Aug-09, at 10:40 AM, Thomas Klausner wrote:
 
 > The following reply was made to PR kern/41961; it has been noted by  
 > GNATS.
 >
 > From: Thomas Klausner <wiz%NetBSD.org@localhost>
 > To: jmcneill%invisible.ca@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 
 > wrote:
 >>     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:
 >
 > Which option?
 
 Option #2.