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Date:      Thu, 17 Feb 2005 23:06:03 +0100
From:      Marius Strobl <marius@alchemy.franken.de>
To:        Pyun YongHyeon <yongari@kt-is.co.kr>
Cc:        Olivier Cherrier <oc@symacx.com>
Subject:   Re: Onboard SCSI controller support on Ultra 2
Message-ID:  <20050217230603.S18907@newtrinity.zeist.de>
In-Reply-To: <20050217024834.GC81013@kt-is.co.kr>; from yongari@kt-is.co.kr on Thu, Feb 17, 2005 at 11:48:34AM %2B0900
References:  <a9fd2434258a08bc12f47247a253f1b4@symacx.com> <86a92e307b2dd4a18e91120078ad0f11@symacx.com> <a9fd2434258a08bc12f47247a253f1b4@symacx.com> <86a92e307b2dd4a18e91120078ad0f11@symacx.com> <20050216121647.GB91200@ida.interface-business.de> <20050216140208.A6222@newtrinity.zeist.de> <20050217024834.GC81013@kt-is.co.kr>

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On Thu, Feb 17, 2005 at 11:48:34AM +0900, Pyun YongHyeon wrote:
> On Wed, Feb 16, 2005 at 02:02:08PM +0100, Marius Strobl wrote:
> [...]
>  > 
>  > > 
>  > > > > The prob i did find was with QFE card support; they all appear as
>  > > > > hme, have the correct individual MAC addresses--- but little else,
>  > > > > and errors galore.
>  > > 
>  > > The QFE actually *is* a quad HME card, that's why FreeBSD uses the
>  > > same driver for it.  What kind of problems do you have with it?
>  > > 
>  > > I've only used PCI-based QFEs so far, but never encountered any
>  > > problems with them -- they even make a fine Quad card in IA32 machines
>  > > now that FreeBSD supports them outside of OpenFirmware systems.
>  > > 
>  > 
>  > AFAIK the SBus QFE cards only have a single interrupt for all four
>  > HMEs and the FreeBSD hme(4) doesn't take this into account.
>  > 
> AFAIK HME interrupt handler is called with softc argument. So I guess
> there is no problem since it can correctly find an instance of softc
> and related information.

Depends on how it actually works. I can't remember were I read about it
but my impression was that it doesn't work like a shared IRQ in the
usual sense.
Anyway, there were reports in the past that SBus QFE don't work properly
and act like not getting interrupts.

Marius



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