Re: Belkin eSATA ExpressCard - no hotplug?

[Mikael Nilsson <mikael@nilsson.name>]

ons 2007-08-01 klockan 13:52 -0700 skrev Greg KH:
> On Wed, Aug 01, 2007 at 10:41:30PM +0200, Mikael Nilsson wrote:
> > Hello everyone!
> > 
> > [please cc on replies]
> > 
> > I just bought a Belkin eSATA II expresscard (based on Silicon Image 3132
> > SATA chip), and I'm trying to get my external SATA disk to work with it.
> > I'm using a Dell XPS M1710 laptop, with an intel 945 chipset.
> > 
> > it seems to work when booting with the device - it shows up as /dev/sda
> > (luckily, my fstab uses UUID...). It uses the sata_sil24 driver.
> > 
> > But plugging in the expresscard efter boot does *nothing* - no actions
> > in dmesg, nothing. AFAICS, the pci_hotplug driver is loaded, but nothing
> > happens.
> > 
> > Anyone has any ideas where to start debugging?
> 
> Do you have the express card pci hotplug controller driver loaded?  It's
> going to be controlled by either the acpiphp or pciehp driver, depending
> on your hardware.

Hmm. How come they are not automatically loaded?

Anyway, modprobing pciehp gives:

[  896.752000] pciehp: HPC vendor_id 8086 device_id 27d0 ss_vid 0 ss_did 0
[  896.752000] Evaluate _OSC Set fails. Status = 0x0005
[  896.752000] Evaluate _OSC Set fails. Status = 0x0005
[  896.752000] pciehp: Cannot get control of hotplug hardware for pci 0000:00:1c.0
[  896.752000] pciehp: HPC vendor_id 8086 device_id 27d2 ss_vid 0 ss_did 0
[  896.752000] Evaluate _OSC Set fails. Status = 0x0005
[  896.752000] Evaluate _OSC Set fails. Status = 0x0005
[  896.752000] pciehp: Cannot get control of hotplug hardware for pci 0000:00:1c.1
[  896.752000] pciehp: HPC vendor_id 8086 device_id 27d4 ss_vid 0 ss_did 0
[  896.752000] Evaluate _OSC Set fails. Status = 0x0005
[  896.752000] Evaluate _OSC Set fails. Status = 0x0005
[  896.752000] pciehp: Cannot get control of hotplug hardware for pci 0000:00:1c.2
[  896.752000] pciehp: HPC vendor_id 8086 device_id 27d6 ss_vid 0 ss_did 0
[  896.752000] Evaluate _OSC Set fails. Status = 0x0005
[  896.752000] Evaluate _OSC Set fails. Status = 0x0005
[  896.752000] pciehp: Cannot get control of hotplug hardware for pci 0000:00:1c.3
[  896.752000] pciehp: PCI Express Hot Plug Controller Driver version: 0.4


modprobe acpiphp gives

[  920.452000] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[  920.460000] acpiphp_glue: can't get bus number, assuming 0
[  920.460000] decode_hpp: Could not get hotplug parameters. Use defaults
[  920.460000] acpiphp: Slot [1] registered

But it does not help at all - I still get no reaction. 

Is there no way to rescan the PCI bus? Like the old rescan-scsi-bus
script...

> 
> Also note that a lot of laptop BIOSes can't handle hotplugging
> expresscard devices yet due to the lack of some other major operating
> system not supporting that just yet :(

Hmm, I'll see if it can be plugged in windows. If it can, it seems this
is a Linux problem, right? Or is there some other way to tell? I also
checked through the BIOS settings, and found nothing related to
expresscards.

Further suggestions welcome.

/Mikael

> 
> thanks,
> 
> greg k-h
> 
-- 
<mikael@nilsson.name>

Plus ça change, plus c'est la même chose


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