nVidia MCP55 SATA hotplug support?

nVidia MCP55 SATA hotplug support?

[Mourad De Clerck]

Hello,

I was wondering what the status was of MCP55 hotplug support. To be more
specific, I'm interested in support for this device:

00:05.0 IDE interface [0101]: nVidia Corporation MCP55 SATA Controller
[10de:037f] (rev a3)

I was led to believe by the driver feature matrix (on
http://linux-ata.org/driver-status.html#matrix) that the sata_nv driver
had working hotplug support. After a bit of googling, I found out that
there was at one point a "hotplug polling" patchset by Tejun Heo to
support it - but that was quite a long while ago.

Will we see this appearing in mainline in the (near) future?

Thank you,

-- Mourad DC

Re: nVidia MCP55 SATA hotplug support?

[Christian Spindler]

My hardware is:

00:0e.0 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2)
00:0e.1 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2)
00:0e.2 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2)

And hotplug does not work, too.


chrisi@mars:~$ lsmod | grep sata
sata_sil24             15236  0 
sata_nv                20612  2 
libata                125168  3 sata_sil24,sata_nv,ata_generic


There are no info in dmesg wenn plug or un-plug a drive.
On Windows hotplug works.

Does anybody knows hot to activate hotplug?

thank you!

Chris

Re: nVidia MCP55 SATA hotplug support?

[Tejun Heo]

Christian Spindler wrote:
> My hardware is:
> 
> 00:0e.0 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2)
> 00:0e.1 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2)
> 00:0e.2 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2)
> 
> And hotplug does not work, too.
> 
> 
> chrisi@mars:~$ lsmod | grep sata
> sata_sil24             15236  0 
> sata_nv                20612  2 
> libata                125168  3 sata_sil24,sata_nv,ata_generic
> 
> 
> There are no info in dmesg wenn plug or un-plug a drive.
> On Windows hotplug works.
> 
> Does anybody knows hot to activate hotplug?

sata_nv.swncq=1 will get you the hotplug interrupts along with NCQ 
support.  It might not be completely stable tho.

-- 
tejun