Re: [PATCH 0/3] libsas: add support for port multiplier

[Dan Williams]

On Fri, May 2, 2014 at 8:36 AM, Tejun Heo <tj@xxxxxxxxxx> wrote:
> On Thu, Apr 24, 2014 at 09:27:03PM +0800, Xiangliang Yu wrote:
>> This patch set will support SATA port multiplier(PM) in LIBSAS.
>>
>> LIBSAS is need to implement several key handling to support SATA PM:
>> First,low level driver notify libsas that SATA PM is attached to HBA port.
>> Then, LIBSAS will need to schedule SATA PMP error handler to scan SATA device
>> that is attached to PM, so we must implemet port softreset and PMP reset
>> handling.
>> If find SATA devices, we should add the devices into SAS transport layer.
>> In order to find SAS domain device we must implemet device type transformation
>> : scsi device -> (port number) -> ata device -> domain device. Then, we can
>> execute IO operation.
>>
>> In these patches, patch 1 is change SATA error handler.
>> And patch 2 will add SATA device into SAS layer and implement device type
>> transformation. Patch 3 implement SATA functional interface in mvsas.
>
> Please properly thread the patchset from the next posting.
>
> Dan, can you please take a look at this?
>

Yeah, it's on my plate to look at...
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