From: Tejun Heo <htejun@gmail.com>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: albertcc@tw.ibm.com, liml@rtr.ca, linux-ide@vger.kernel.org
Subject: Re: [PATCH 14/14] ahci: add softreset
Date: Mon, 19 Dec 2005 15:12:42 +0900 [thread overview]
Message-ID: <43A64F5A.1010002@gmail.com> (raw)
In-Reply-To: <43A646C7.3050503@pobox.com>
Jeff Garzik wrote:
> Tejun Heo wrote:
>
>> Now that libata is smart enought to handle both soft and hard resets,
>> add softreset method.
>
>
> I'm a bit skeptical that polling is what should be done here. SATA is
> inherently event-driven...
>
Well, I'm a bit skeptical the other way around. :-)
What benefits would making softreset event-driven bring? It would be
much more complex and softreset is so not a hot-path.
Also, AHCI does not report events for CLO and START manipulation. They
need to be polled. They can be done by dancing with timers, but....
--
tejun
next prev parent reply other threads:[~2005-12-19 6:12 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-18 13:33 [RFC/PATCHSET] libata: new reset mechanism Tejun Heo
2005-12-18 13:36 ` [PATCH 01/14] libata: modify ata_dev_try_classify Tejun Heo
2005-12-18 13:38 ` [PATCH 02/14] libata: implement new reset mechanism Tejun Heo
2005-12-19 5:31 ` Jeff Garzik
2005-12-19 6:33 ` Tejun Heo
2005-12-18 13:40 ` [PATCH 03/14] libata: implement standard reset methods Tejun Heo
2005-12-18 13:41 ` [PATCH 04/14] libata: export ata_busy_sleep() Tejun Heo
2005-12-18 13:42 ` [PATCH 05/14] sata_sil: convert to new reset mechanism Tejun Heo
2005-12-18 13:43 ` [PATCH 06/14] sata_sil24: " Tejun Heo
2005-12-18 13:44 ` [PATCH 07/14] sata_sil24: add hardreset Tejun Heo
2005-12-18 13:46 ` [PATCH 08/14] ata_piix: convert pata to new reset mechanism Tejun Heo
2005-12-18 13:47 ` [PATCH 09/14] ata_piix: convert sata " Tejun Heo
2005-12-18 13:48 ` [PATCH 10/14] ahci: separate out ahci_stop/start_engine() Tejun Heo
2005-12-19 5:33 ` Jeff Garzik
2005-12-19 6:05 ` Tejun Heo
2005-12-18 13:49 ` [PATCH 11/14] ahci: convert to new reset mechanism Tejun Heo
2005-12-19 5:33 ` Jeff Garzik
2005-12-19 6:07 ` Tejun Heo
2005-12-18 13:50 ` [PATCH 12/14] ahci: separate out ahci_cmd_prep() Tejun Heo
2005-12-19 5:34 ` Jeff Garzik
2005-12-18 13:51 ` [PATCH 13/14] ahci: add constants for SRST Tejun Heo
2005-12-19 5:35 ` Jeff Garzik
2005-12-18 13:51 ` [PATCH 14/14] ahci: add softreset Tejun Heo
2005-12-19 5:36 ` Jeff Garzik
2005-12-19 6:12 ` Tejun Heo [this message]
2005-12-19 6:40 ` Jeff Garzik
2005-12-19 7:13 ` Tejun Heo
2006-01-29 5:11 ` Jeff Garzik
2005-12-19 5:20 ` [RFC/PATCHSET] libata: new reset mechanism Jeff Garzik
2005-12-19 6:03 ` Tejun Heo
2006-01-29 5:20 ` Jeff Garzik
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