Faking a Hot-Unplug event in kernel 2.6

[Rajat Jain <rajatxjain@gmail.com>]

Hi,

Please pardon me if this is not the right list for this post. I'm
using 2.6 Kernel. I'm having a (Hot-pluggable) Qlogic HBA plugged into
a PCI Express Slot.

I want to fake an hot-unplug event for this HBA, without physically
removing it from the slot. Basically what I want is that while the HBA
is still physically present at the slot, I want to fire a command /
program that would fake the hot-unplug event for this slot, and thus
will deregister the HBA from Linux. Ideally, I want to do this from
userspace. But if it is not possible, then I can go for a kernel
module as well.

I think that this feature was made available by "Fake PCI Hot plug
controller Driver", but I believe that can only be used if my system
does not have REAL hot-plugging slots. Can "Fake PCI Hot-plug
Controller Driver (fakephp.ko)" and "PCI Express Hot-plug Controller
Driver (pciehp.ko)" Co-exist ??? (So that I can manually give fake
unplug event and THEN remove the device; While hot-plugging, I want
PCI Express HPC driver to take care of every thing)

Is it possible to do what I am trying to do?

TIA,

Rajat


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