linux-kernel - Re: PCIe can not rescan for new PCIe device ( FPGA board )

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Date:	Mon, 24 Oct 2011 11:20:37 +0200
From:	Abdelghani Ouchabane <abdelghani@...no.com>
To:	Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>
CC:	Bjorn Helgaas <bhelgaas@...gle.com>, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org
Subject: Re: PCIe can not rescan for new PCIe device ( FPGA board )


Hallo Kenji,

many thanks for your great supports. The new BIOS from Congatec solves
the problem.

I using both fakephp&  pciehp drivers, Can I use both drivers at the
same time?

> I think, "no".
>
>> I am using fakephp because I need "/sys/bus/pci/slots/0000\:02\:00.0/power".
>>
>> Other thing: my Kernel has "CONFIG_ACPI_PROC_EVENT is not set", does
>> this explain why the scan is not performed automatically?
> Fakephp driver doesn't have any corresponding hotplug controller (hardware).
> So I don't think there is no way to detect presence change event on the slot.
>
>> [root@...alhost ~]# modprobe acpiphp
>> FATAL: Error inserting acpiphp
>> (/lib/modules/2.6.40.3-0.119.delos.i686/kernel/drivers/pci/hotplug/acpiphp.ko):
>> No such device
>>
>> What is the advantage to use acpiphp ?
> Some platform only allows acpiphp, but doesn't allow PCIe native hotplug driver
> (like pciehp). The 'pciehp_force' specified your environment is to load pciehp
> forcibly on such platform. So I thought acpiphp might solve your problem.
>
> Regards,
> Kenji Kaneshige
>

Hallo
many thanks for your support, my system is working perfectly.

Cheers,
Ghani



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