Quoting Eunice Chen <[EMAIL PROTECTED]>:

> 3512/3112/3114 controllers do not support PMP. 3124/3132 controllers do.

Um...  Well, that's bad.  Can you update datasheet then?  

http://www.siliconimage.com/docs/SiI-DS-0102-D.pdf says on page 77:

===
Serial ATA SControl
Address Offset: 0x100 (Channel 0) / 0x180 (Channel 1)
Access Type: Read/Write
Reset Value: 0x0000_0010
...
This register is the SControl register as defined by the Serial ATA 
specification.
&#8226; Bit [19:16]: PMP - This field is the 4-bit value to be placed in the 
Port
Multiplier Port field of all transmitted FISes.
===
and there is also pm_fiscfg bitfield in SMisc :-(

Provoking false hopes from unsuspecting readers :-(  I'll shell out some money
then...
                                     Thanks,
                                             Petr

> Eunice
> 
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Petr Vandrovec
> Sent: Wednesday, August 15, 2007 5:47 AM
> To: [email protected]
> Subject: sata_sil, sil3512, and PMP?
> 
> Hello,
>    is anybody working on PMP support in sata_sil driver, or should I 
> give it a try, or is it simpler to just shell out $70 to get 3124 based 
> device with FIS based switching?
> 
> According to datasheet it seems that 3512 should be able to do command 
> based switching without (too big) problems.  Though I'm not very 
> confident as whole PMP support fits into two sentences in 3512 public 
> datasheet :-(
>                                       Thanks,
>                                               Petr Vandrovec
> 
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