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To: sos@DeepCore.dk
From: "M. Warner Losh" <imp@bsdimp.com>
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Subject: Re: Recent ATA changes break Thinkpad T40p
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In message: <4128C2BE.7080103@DeepCore.dk>
            S=F8ren Schmidt <sos@DeepCore.dk> writes:
: S=F8ren Schmidt wrote:
: > Oliver B. Fischer wrote:
: > =

: >> Brian Buchanan wrote:
: >>
: >>> S=EF=BF=BDren,
: >>>
: >>> It looks like the changes you made to ATA IRQ handling in the las=
t few
: >>> days broke ATA support on my laptop, an IBM Thinkpad T40p.
: >>>
: >>> atapci0: <Intel ICH4 UDMA100 controller> port
: >>> 0x1860-0x186f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 =
on pci0
: >>>
: >>> atapci0@pci0:31:1:      class=3D0x01018a card=3D0x052d1014 chip=3D=
0x24ca8086
: >>> rev=3D0x01 hdr=3D0x00
: >>>     vendor   =3D 'Intel Corporation'
: >>>     device   =3D '82801DBM (ICH4-M) UltraATA/100 EIDE Controller'=

: >>>     class    =3D mass storage
: >>>     subclass =3D ATA
: =

: >> I can confirm this for my R51, which have the same controller as =

: >> Brians one.
: > =

: > =

: > This is *not* a controller problem, its because the CDROM drive has=
 =

: > buggy firmware that responds to both master and slave selection :(
: =

: OK, I have committed a workaround for those buggers to -current...
: =

: (for those that uses 5.3 just take your ATA driver upto -current)

This work around appears to work for me, since my ich4 was seeing the
same problems, as I reported on IRC.

Warner