linux-kernel - Re: pci-express hotplug

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Date:	Tue, 13 Oct 2009 10:31:52 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	jbarnes@...tuousgeek.org, linux-pci@...r.kernel.org
Subject: Re: pci-express hotplug

On Tue, Oct 13 2009, Kenji Kaneshige wrote:
> Jens Axboe wrote:
>> Hi,
>>
>> I'm trying to get pci-express hotplug working in a box here. I don't
>> really care about the hotplug aspect, I just want the darn pci-e slots
>> that are designated hotplug slots to actually WORK. When I load pciehp,
>> I get:
>>
>> Firmware did not grant requested _OSC control
>> Firmware did not grant requested _OSC control
>> Firmware did not grant requested _OSC control
>> Firmware did not grant requested _OSC control
>> pciehp 0000:00:05.0:pcie04: HPC vendor_id 8086 device_id 340c ss_vid 0 ss_did 0
>> pciehp 0000:00:05.0:pcie04: service driver pciehp loaded
>> Firmware did not grant requested _OSC control
>> pciehp 0000:00:07.0:pcie04: HPC vendor_id 8086 device_id 340e ss_vid 0 ss_did 0
>> pciehp 0000:00:07.0:pcie04: service driver pciehp loaded
>> Firmware did not grant requested _OSC control
>> pciehp 0000:80:07.0:pcie04: HPC vendor_id 8086 device_id 340e ss_vid 0 ss_did 0
>> pciehp 0000:80:07.0:pcie04: service driver pciehp loaded
>> pciehp 0000:80:09.0:pcie04: HPC vendor_id 8086 device_id 3410 ss_vid 0 ss_did 0
>> pciehp 0000:80:09.0:pcie04: service driver pciehp loaded
>> pciehp: PCI Express Hot Plug Controller Driver version: 0.4
>>
>> and the devices in the hotplug slots stay off. Is this an ACPI/bios
>> issue? How can I debug this?
>>
>
> Could you give me the result of "ls -lR /sys/bus/pci/slots/"
> after loading pciehp?

I have attached the result of that ls prior to loading pciehp/acpiphp
(pre-load), after loading pciehp (pciehp-load), and with acpiphp loaded
only as well (acpiphp-load).

-- 
Jens Axboe


Download attachment "acpiphp-load.bz2" of type "application/octet-stream" (2062 bytes)

Download attachment "pre-load.bz2" of type "application/octet-stream" (1983 bytes)

Download attachment "pciehp-load.bz2" of type "application/octet-stream" (2120 bytes)