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Date:      Sat, 04 Nov 2000 21:22:34 -0500
From:      Sergey Babkin <babkin@bellatlantic.net>
To:        Warner Losh <imp@village.org>
Cc:        Rink Springer <rink@springer.cx>, hackers@FreeBSD.ORG
Subject:   Re: KLD's on ISA bus: how?
Message-ID:  <3A04C46A.24DF7BA6@bellatlantic.net>
References:  <3A04A8CD.6BDBB8CD@bellatlantic.net>  <3A044899.9020508@springer.cx> <200011042344.QAA37170@harmony.village.org> <200011050035.RAA37476@harmony.village.org>

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Warner Losh wrote:
> 
> In message <3A04A8CD.6BDBB8CD@bellatlantic.net> Sergey Babkin writes:

> : In 4.x if you say in config file
> :
> : foo at isa
> :
> : and provide the identify routine in the driver the result should be
> : the same. The "ep" driver does that using a proprietary probe
> : procedure.
> 
> Most cards don't have that backdoor. They are either full plug and
> play, or they are rock stupid.  Come to think of it, there are some
> that are both :-).  The foo at isa might not work even in 4.x.  It
> will attach a child with no hints at all, so the probe routine won't
> know where to look.  The identify routine is the only way to deal.  In
> 4.x, you say
>         device  ep
> not
>         device  ep at isa
> iirc.

Ah, right. I confused it with another case, where the probe routine
tries to look for all possible ports. If I remember correctly,
"aha" is an example of such device.

-SB


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