From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
To: Steven Scholz <steven.scholz@imc-berlin.de>
Cc: linux-ide@vger.kernel.org
Subject: Re: no DRQ after issuing MULTWRITE_EXT ?
Date: Thu, 01 Feb 2007 19:06:06 +0300 [thread overview]
Message-ID: <45C20FEE.5010904@ru.mvista.com> (raw)
In-Reply-To: <45C20F09.4070908@imc-berlin.de>
Hello.
Steven Scholz wrote:
>>>> Looks like a spurious interrupt... Is your IDE IRQ shared with other
>>>>devices?
>>>..
>>>But IIUC then first the HDD times out, the ide driver handles this and
>>>then an irq occurs which is probably the irq the driver was waiting for.
>> The driver is *not* waiting for any IRQ after issuing MULTWRITE_EXT,
>>that's why it's "unexpected".
> Hmm. But how does he "know" when that MULTWRITE_EXT is finished!?
It's considered finished in this case as there was no starting DRQ
"handshake". The first interrupt should happen only after the first block of
data is written.
> Steven
MBR, Sergei
prev parent reply other threads:[~2007-02-01 16:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-01 9:18 no DRQ after issuing MULTWRITE_EXT ? Steven Scholz
2007-02-01 9:25 ` Eric D. Mudama
2007-02-01 9:30 ` Steven Scholz
2007-02-01 13:06 ` Sergei Shtylyov
2007-02-01 13:33 ` Steven Scholz
2007-02-01 13:39 ` Sergei Shtylyov
2007-02-01 16:02 ` Steven Scholz
2007-02-01 16:06 ` Sergei Shtylyov [this message]
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