From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
To: Aaron Lu <aaron.lu@intel.com>
Cc: linux-ide@vger.kernel.org, tj@kernel.org
Subject: Re: [PATCH] libata-zpodd: must use ata_tf_init()
Date: Fri, 28 Jun 2013 16:49:00 +0400 [thread overview]
Message-ID: <51CD863C.7000802@cogentembedded.com> (raw)
In-Reply-To: <51CB9227.30307@intel.com>
Hello.
On 27-06-2013 5:15, Aaron Lu wrote:
>>>> There are some SATA controllers which have both devices 0 and 1 but this module
>>> Do you mean a SATA port can connect to two SATA devices without PMP?
>> No, I mean 2 SATA ports combined in one ATA channel as 2 devices.
>> Look for SLAVE_POSS in drivers/ata/[s]ata*.c...
> Oh yes that happened when the SATA controller is in IDE programming
> mode, not AHCI.
AHCI is not the only mode for the SATA controllers.
> ZPODD is only supported for SATA controllers in AHCI programming mode,
Hm, really? How about the true SATA controllers that don't use AHCI?
> the ACPI table will not support power off the port if the controller is
> in IDE mode, so the device 1 case shouldn't happen in practice :-)
Anyway, I need uniform setup for ata_exec_internal() call for my to
be posted cleanup patches.
> Thanks,
> Aaron
WBR, Sergei
next prev parent reply other threads:[~2013-06-28 12:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-23 19:25 [PATCH] libata-zpodd: must use ata_tf_init() Sergei Shtylyov
2013-06-23 19:34 ` Sergei Shtylyov
2013-06-24 22:46 ` Tejun Heo
2013-06-26 2:05 ` Aaron Lu
2013-06-26 11:10 ` Sergei Shtylyov
2013-06-27 1:15 ` Aaron Lu
2013-06-28 12:49 ` Sergei Shtylyov [this message]
2013-06-29 13:04 ` Aaron Lu
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