Re: [PATCH 0/2] libata: support SATA devices on SAS HBAs

[Luben Tuikov <luben_tuikov@adaptec.com>]

On 10/25/05 09:39, Brian King wrote:
> Luben Tuikov wrote:
> 
>>On 10/24/05 18:17, Brian King wrote:
>>
>>
>>>The following patches enhance libata to allow SAS device drivers
>>>to utilize libata to talk to SATA devices. It introduces some
>>>new APIs which allow libata to be used without allocating a
>>>virtual scsi host. In the context of SAS, a struct ata_port
>>>is not a physical port, but rather becomes a virtual construct.
>>>
>>>Since my last post, I have removed the dependence on the host_set
>>>struct. The following two patches depend on the qc_transport patch:
>>>
>>>http://marc.theaimsgroup.com/?l=linux-ide&m=112845939215286&w=2
>>>
>>>The API is the same as the last time I posted it to linux-ide,
>>>but here is the description again:
>>>
>>>New APIs:
>>>
>>>ata_sas_port_alloc - Allocate an ata_port 
>>>ata_sas_port_init - Initialize an ata_port (probe device, etc)
>>>ata_sas_port_destroy - Free an ata_port allocated by ata_sas_port_alloc
>>>ata_sas_slave_configure - configure scsi device
>>>ata_sas_queuecmd - queue a scsi command, similar to ata_scsi_queuecomand
>>>
>>>These new APIs can be used either directly by a SAS LLDD or could be used
>>>by the SAS transport class. 
>>>
>>>Possible usage for a SAS LLDD would be:
>>>
>>>scsi_scan_host
>>>	slave_alloc
>>>		ata_sas_port_alloc
>>>		ata_sas_port_init
>>>	slave_configure
>>>		ata_sas_slave_configure
>>>
>>>Commands received by the LLDD for SATA devices would call ata_sas_queuecmd.
>>>
>>>Device teardown would occur with:
>>>
>>>slave_destroy
>>>	ata_sas_port_destroy
>>
>>
>>Hey Brian,
>>
>>That's admireable effort.  Is there a git tree I can pull from which has
>>these patches?  (I don't mind using the patches themselves as well.)
>>
>>I'll take a look indepth and comment further.
>>
>>Thanks,
>>	Luben
> 
> 
> Hey Luben,
> 
> I don't have a git tree setup, just the three patches. 

I assume you've tested them already on the SAS Transport Layer?

	Luben
-- 
http://linux.adaptec.com/sas/
http://www.adaptec.com/sas/