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From: Tejun Heo <htejun@gmail.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Daniel Beichl <daniel_beichl@gmx.net>, linux-ide@vger.kernel.org
Subject: Re: [PATCH] Re: 2.6.19.1, sata_sil: sata dvd writer doesn't work
Date: Tue, 08 May 2007 16:52:52 +0200	[thread overview]
Message-ID: <46408EC4.9080904@gmail.com> (raw)
In-Reply-To: <20070508155119.4207bbc6@the-village.bc.nu>

Alan Cox wrote:
>>> A thing that crossed my mind was a timing issue. Perhaps the dmaing of <
>>> 60 bytes is that
>>> fast that the interrupt that causes it is not yet handled correctly. But
>>> this is just a very wild guess.
>> I don't think that can happen.  Controllers are required to queue
>> interrupt till FIFO is flushed.  Can you post dmesg after such errors?
> 
> Random finger in the air guess - the FIFO on the SIL DMA engine is 64
> bytes long ? Perhaps this is something Jeff can query with his contacts
> at Silicon Image ?

That sounds plausible.  I have pretty good relationship with SIMG.  I'll
ask them.

Thanks.

-- 
tejun

  reply	other threads:[~2007-05-08 14:53 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <46362672.7080103@gmx.net>
     [not found] ` <4636EA85.40809@t-online.de>
     [not found]   ` <46371628.9060905@gmail.com>
     [not found]     ` <46379CA1.601@t-online.de>
     [not found]       ` <463AEAF9.3000103@gmail.com>
2007-05-04 17:32         ` [PATCH] Re: 2.6.19.1, sata_sil: sata dvd writer doesn't work Harald Dunkel
2007-05-07 10:29           ` Tejun Heo
2007-05-07 18:21             ` Harald Dunkel
2007-05-08 14:27               ` Tejun Heo
2007-05-09 17:37                 ` Harald Dunkel
2007-05-10 13:00                   ` Tejun Heo
2007-05-10 20:27                     ` Harald Dunkel
2007-05-11  8:33                       ` Tejun Heo
2007-05-15 17:38                         ` Harald Dunkel
2007-06-06  4:38                         ` Harald Dunkel
2007-06-19  7:24                           ` Tejun Heo
     [not found] ` <4636DCA9.9050803@gmail.com>
     [not found]   ` <4636FBB7.3030605@gmx.net>
     [not found]     ` <463AE631.9030701@gmail.com>
2007-05-04 18:18       ` Daniel Beichl
2007-05-07  8:24         ` Tejun Heo
     [not found]           ` <463F634E.2070103@gmx.net>
2007-05-08 14:42             ` Tejun Heo
2007-05-08 14:51               ` Alan Cox
2007-05-08 14:52                 ` Tejun Heo [this message]
2007-05-25  3:23             ` Jeff Garzik

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