Date: Mon, 12 Jun 2000 00:01:19 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Mike Smith <msmith@FreeBSD.org> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/musycc musycc.c Message-ID: <2477.960760879@critter.freebsd.dk> In-Reply-To: Your message of "Sun, 11 Jun 2000 13:43:28 PDT." <200006112043.NAA15090@mass.cdrom.com>
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In message <200006112043.NAA15090@mass.cdrom.com>, Mike Smith writes:
>> phk 2000/06/11 12:09:48 PDT
>>
>> Added files:
>> sys/dev/musycc musycc.c
>> Log:
>> The very feeble beginnings of a driver for the LanMedia LMC1504 card.
>>
>> New-Bus wizards are encouraged to look at this, I think it poses a
>> challenge for the current newbus design.
>
>Can you be a little more explicit about the nature of the problem? It
>looks pretty straightforward from here...
>
>Making some assumptions - function 0 and function 1 both describe
>resources that a single driver instance requires in order to operate
>correctly.
Right with the added twist that identification doesn't complete
until I have had a chance to poke at function 1. In other words,
I can't really claim function 0 when I see it, because I don't
know if it is part of the card I'm looking for or another card
and I will not know until I get to probe function 1.
The card looks like this:
############### func0
# / \
# / \
# | \
PCI ==# | |
# Framer0 Framer1 [...]
# | |
# | |
### func1 ======= "ebus"=======-- ID-prom
Your suggestions all sound like equally hackish ways to do it as what
I have done in my code, and maybe we don't want to support this kind
of hardware in any more respectable way than with some kind of hack ?
For another problem of this class, look at the Znyx314 detection
in if_de
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD coreteam member | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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