Date: Sun, 14 Jan 1996 14:11:13 -0800 From: "Amancio Hasty Jr." <hasty@rah.star-gate.com> To: Terry Lambert <terry@lambert.org> Cc: smpatel@wam.umd.edu (Sujal Patel), freebsd-hackers@FreeBSD.org, kashmir@umiacs.umd.edu Subject: Re: PnP Proposal, Ideas & Issues [Was: PnP problem...] Message-ID: <199601142211.OAA01251@rah.star-gate.com> In-Reply-To: Your message of "Wed, 10 Jan 1996 14:35:00 MST." <199601102135.OAA15484@phaeton.artisoft.com>
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Yeap, Sujal's solution is not optimal however it is infinitly superior
to your solution 8)
At least Sujal, is making steady progress .
Just because a card is a PnP does not mean that the card is
fully reconfigurable. Hence, is not too difficult to see how
a PnP system may fail to autoconfigure itself.
Even if we can't probe ISA devices 100% of the times we can
configure and test the configuration of PnP devices.
Amancio
>>> Terry Lambert said:
> > So the first goal was to be able to specify certain resources that a PnP
> > card should use:
> >
> > I was hoping that we could strive for something along of the lines of:
> > device sio2 at isa? pnp "SUP1310" port "IO_COM3" tty irq 15 ve
ctor siointr
> >
> > This would be nice and simple-- Say that PnP device "SUP1310" is handled
> > by driver sio2 and configure the card and the driver for port 0x3e8 and
> > irq 15. But unfortunately, the solution is not going to nearly this
> > simple. Cards like the GUS PnP and other multi-function cards cannot be
> > configured like this at all.
>
> This is probably a bad approach. The idea of PnP is that the devices
> will fit into an unused space. This is a difficult (and potentially
> insoluable without a hack job) problem for non-PnP ISA devices in a
> standard ISA bus, since if you can't probe them, you can't predict
> what the conflicts would be.
>
> > I'm sure that we're gonna always need some kind of manual configuration
> > of PnP devices (for those really though cards like the GUS). The
> > majority of PnP cards should be very simple to configure (and could
> > be done automatically at boot-time). The problem is that it seems VERY
> > difficult to determine exactly what resources are going to be used when
> > the system is booting.
>
> I think you'd need manual configuration of unprobeable hardware to set
> up the intersects for it. Other than that, I don't think you *really*
> have to manually config the cards.
>
>
> Terry Lambert
> terry@lambert.org
> ---
> Any opinions in this posting are my own and not those of my present
> or previous employers.
>
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