Hi,

Would any of these calls enable PCI PNP to work with PNP OS
set to yes?  This is a pretty serious issue for my company that
I am trying to resolve pretty quickly...

Thanks,

On 929127815 seconds since the Beginning of the UNIX epoch
Matthias Drochner wrote:
>
>
>ross@ghs.com said:
>> We quickly reset all the pnp devices' configurations.  This isn't
>> right at all, lots of useful information is lost that way, and the
>> non-volatile config information and resource allocation in the bios is
>> just thrown away. 
>
>I fully share your opinion about the ISAPnP implementation. It's not
>only that it throws away configuration data, it also fails with
>broken hardware where the reset doesn't work - the infamous "card
>found twice at different addresses" symptome.
>The PnP BIOS, however, provides infirmation about devices wired to
>the motherboard which are not ISAPnP devices. (The said ThinkPad
>has no ISAPnP devices at all.) It's just another source of information.
>
>> if we just check in the isapnp
>> probe for each device whether someone else configured it, and if we use
>> the bus_space I/O port extents to prevent reattachment.
>
>One if the PnPBIOS functions (ch. 4.7.3 in the specification) returns
>ISAPnP specific information: the number of cards and the "read data port".
>I'd hope that if this function succeeds, we can be sure that the BIOS
>configured the ISAPnP cards. (Well, perhaps as sure as we can assume
>that the PCI cards are configured - the "PnP OS" setting might apply
>as well.)
>We could add another attachment to "isapnp": "isapnp0 at pnpbios0"
>which skips the port scan and uses the configured settings. "pnpbios"
>should be attached before "isa" anyway, so this should just work.
>
>best regards
>Matthias
>
>
>

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