Hello, I'm sorry for the long delay. (2011/10/14 18:40), Abdelghani Ouchabane wrote: > On 13/10/11 14:50, Kenji Kaneshige wrote: >> Thank you for the information. Though I don't have any good news for you, >> I think as follows based on the info. >> >> - There are two hot-plug capable PCIe slots on your machine. >> >> - But, it seems you are using fakephp driver, not pciehp (is that >> correct?). The fakephp cannot handle hot-plug event such as presence >> change event on the slot. This is why the bus is not scanned automatically. >> >> - Unfortunately, the bus would not be scanned automatically even if you >> use pciehp. As I told you in the previous email, current pciehp don't >> scan the bus automatically only if the slot is hot-plug surprise >> capable. According to the lspci output, your hotplug controller is not >> hot-plug surprise capable. >> >> - I don't think pciehp solve invalid register read problem. According to >> the lspci output, power controller capability isn't present on your >> hotplug controller. On such environment, pciehp driver does almost the >> same thing as fakephp does (just scan the bus/remove the pci device data >> structure) except hot-plug event handling. >> >> But it's worth whole trying pciehp. >> By the way, have you tried acpiphp? It might help you. >> >> Regards, >> Kenji Kaneshige >> > > 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@localhost ~]# 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 > > > Cheers, > Ghani > > > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-pci" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
