Kenji Kaneshige wrote:
According to PCI firmware specification, Native Hot Plug driver need to
request hotplug control from firmware. Your platform seems to deny this
request. So pciehp cannot handle hotplug slots or hotplug events. It's
your platform's decision.
platform==BIOS in this context, right?
It seems to me that the hardware is capable of supporting pcie hotplug,
even if the BIOS doesn't advertise the fact. Is there a way to get the
effect of pciehp_force but only for the one slot where I need it?
I think hotplug slots on your system are
supposed to be handled by ACPI based hotplug driver. What about using
acpiphp?
It doesn't seem to work:
[ 0.370120] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[ 0.374863] acpiphp_glue: Total 0 slots
I presume that the BIOS is also not advertising any ACPI hotplug method.
Regards, Phil.
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