From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
To: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: linux-mips@linux-mips.org, linux-ide@vger.kernel.org,
bzolnier@gmail.com, ralf@linux-mips.org
Subject: Re: [PATCH 1/2] ide: Add tx4939ide driver
Date: Thu, 11 Sep 2008 19:18:04 +0400 [thread overview]
Message-ID: <48C936AC.1080309@ru.mvista.com> (raw)
In-Reply-To: <20080912.000349.18312151.anemo@mba.ocn.ne.jp>
Atsushi Nemoto wrote:
>>>But the "Command Transfer Mode Select" bits affects access timings on
>>>setting task registers for DMA command.
>> So what? PIO and DMA are different protocols on IDE bus, so they shouldn't
>>affect each other. The IDE core will always tune the best PIO mode for you, so
>>the optimal command timings will be set.
> Hmm, that would be a thing I had misunderstood. I thought
> set_pio_mode is not called when the drive was DMA capable.
PIO autotuning was optional before (done only if the driver requested it
via setting drive->autotune), but now done always.
MBR, Sergei
next prev parent reply other threads:[~2008-09-11 15:17 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-09 16:08 [PATCH 1/2] ide: Add tx4939ide driver Atsushi Nemoto
2008-09-09 16:44 ` Alan Cox
2008-09-09 17:08 ` Sergei Shtylyov
2008-09-10 15:12 ` Atsushi Nemoto
2008-09-10 15:06 ` Atsushi Nemoto
2008-09-13 13:37 ` Atsushi Nemoto
2008-09-09 17:50 ` Sergei Shtylyov
2008-09-10 15:32 ` Atsushi Nemoto
2008-09-10 15:55 ` Sergei Shtylyov
2008-09-10 16:25 ` Sergei Shtylyov
2008-09-11 15:03 ` Atsushi Nemoto
2008-09-11 15:18 ` Sergei Shtylyov [this message]
2008-09-10 23:02 ` Sergei Shtylyov
2008-09-11 15:52 ` Atsushi Nemoto
2008-09-12 15:34 ` Sergei Shtylyov
2008-09-12 15:59 ` Atsushi Nemoto
2008-09-12 16:44 ` Sergei Shtylyov
2008-09-12 17:19 ` Sergei Shtylyov
2008-09-13 12:32 ` Atsushi Nemoto
2008-09-16 21:15 ` Sergei Shtylyov
2008-09-16 21:39 ` Sergei Shtylyov
2008-09-27 16:19 ` Bartlomiej Zolnierkiewicz
2008-09-27 22:09 ` Tejun Heo
2008-09-30 13:07 ` Atsushi Nemoto
2008-09-30 15:09 ` James Bottomley
2008-10-04 2:56 ` Tejun Heo
2008-10-07 12:09 ` Jens Axboe
2008-09-28 8:41 ` Ralf Baechle
2008-09-11 22:33 ` Sergei Shtylyov
2008-09-12 14:37 ` Atsushi Nemoto
2008-09-12 15:01 ` Sergei Shtylyov
2008-09-13 21:48 ` Sergei Shtylyov
2008-09-14 13:05 ` Atsushi Nemoto
2008-09-16 10:29 ` Sergei Shtylyov
2008-09-16 15:20 ` Atsushi Nemoto
2008-09-16 15:32 ` Sergei Shtylyov
2008-09-16 16:24 ` Sergei Shtylyov
2008-09-16 21:02 ` Sergei Shtylyov
2008-09-14 20:55 ` Sergei Shtylyov
2008-09-15 14:01 ` Atsushi Nemoto
2008-09-16 21:59 ` Sergei Shtylyov
2008-09-17 15:12 ` Atsushi Nemoto
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