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Date: Thu, 29 Oct 2009 18:23:06 +0900 From: Kenji Kaneshige <kaneshige.kenji@...fujitsu.com> To: Jens Axboe <jens.axboe@...cle.com> CC: Alex Chiang <achiang@...com>, Mark Lord <lkml@....ca>, Greg KH <greg@...ah.com>, Linux Kernel <linux-kernel@...r.kernel.org>, jbarnes@...tuousgeek.org, linux-pci@...r.kernel.org Subject: Re: pci-express hotplug Jens Axboe wrote: > On Thu, Oct 29 2009, Kenji Kaneshige wrote: >> Jens Axboe wrote: >>> On Wed, Oct 28 2009, Kenji Kaneshige wrote: >>>> Jens Axboe wrote: >>>>> On Tue, Oct 27 2009, Kenji Kaneshige wrote: >>>>>> Jens Axboe wrote: >>>>>>> On Tue, Oct 20 2009, Alex Chiang wrote: >>>>>>>> * Jens Axboe <jens.axboe@...cle.com>: >>>>>>>>> On Tue, Oct 13 2009, Alex Chiang wrote: >>>>>>>>>>>> Can you modprobe acpiphp with debug=1? And send the output? >>>>>>>>>>> acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 >>>>>>>>>>> acpiphp_glue: found PCI-to-PCI bridge at PCI 0000:00:05.0 >>>>>>>>>>> acpiphp_glue: found ACPI PCI Hotplug slot 1 at PCI 0000:08:00 >>>>>>>>>>> acpiphp: Slot [1] registered >>>>>>>>>>> acpiphp_glue: found PCI-to-PCI bridge at PCI 0000:00:07.0 >>>>>>>>>>> acpiphp_glue: found ACPI PCI Hotplug slot 2 at PCI 0000:0b:00 >>>>>>>>>>> acpiphp: Slot [2] registered >>>>>>>>>>> acpiphp_glue: found PCI-to-PCI bridge at PCI 0000:80:07.0 >>>>>>>>>>> acpiphp_glue: found ACPI PCI Hotplug slot 6 at PCI 0000:84:00 >>>>>>>>>>> acpiphp: Slot [6] registered >>>>>>>>>>> acpiphp_glue: found PCI-to-PCI bridge at PCI 0000:80:09.0 >>>>>>>>>>> acpiphp_glue: found ACPI PCI Hotplug slot 7 at PCI 0000:87:00 >>>>>>>>>>> acpiphp: Slot [7] registered >>>>>>>>>>> acpiphp_glue: Bus 0000:87 has 1 slot >>>>>>>>>>> acpiphp_glue: Bus 0000:84 has 1 slot >>>>>>>>>>> acpiphp_glue: Bus 0000:0b has 1 slot >>>>>>>>>>> acpiphp_glue: Bus 0000:08 has 1 slot >>>>>>>>>>> acpiphp_glue: Total 4 slots >>>>>>>>>> You mentioned in another mail that you echoed 1 into the various >>>>>>>>>> slots' power files. >>>>>>>>>> >>>>>>>>>> Did you do that after modprobing acpiphp with debug=1? >>>>>>>>>> >>>>>>>>>> If so, there should be debug output when you try and turn them >>>>>>>>>> on. >>>>>>>>> It produces: >>>>>>>>> >>>>>>>>> acpiphp: enable_slot - physical_slot = 1 >>>>>>>>> acpiphp_glue: acpiphp_enable_slot: Slot status is not ACPI_STA_ALL >>>>>>>>> acpiphp: enable_slot - physical_slot = 2 >>>>>>>>> acpiphp_glue: acpiphp_enable_slot: Slot status is not ACPI_STA_ALL >>>>>>>>> acpiphp: enable_slot - physical_slot = 6 >>>>>>>>> acpiphp_glue: acpiphp_enable_slot: Slot status is not ACPI_STA_ALL >>>>>>>>> acpiphp: enable_slot - physical_slot = 7 >>>>>>>>> acpiphp_glue: acpiphp_enable_slot: Slot status is not ACPI_STA_ALL >>>>>>>> Hm, so for some reason, firmware on your machine is telling us >>>>>>>> that it doesn't think cards are present and/or enabled. >>>>>>>> >>>>>>>> Unfortunately, I don't know why your firmware would be saying >>>>>>>> that. We could add some more debug printks to see what firmware >>>>>>>> thinks about your system... Or we could just wait and see what >>>>>>>> happens after you get your hardware replaced. >>>>>>> New board, the exact same thing happens. >>>>>>> >>>>>>>>> I have a card in one of the slots only this time. >>>>>>>>> >>>>>>>>>> Also, quick dummy check, you are trying to power on populated >>>>>>>>>> slots, right? :) >>>>>>>>> Yes :-) >>>>>>>>> >>>>>>>>>> Can you send the output of lspci -vv? And I like the output of >>>>>>>>>> lspci -vt as well... Both before and after loading acpiphp >>>>>>>>>> please. >>>>>>>>> Send privately. >>>>>>>> No difference in before and after. Odd. >>>>>>>> >>>>>>>> If you want to poke us again after your hardware swap, please do >>>>>>>> so. Sorry for being not so helpful. :-/ >>>>>>> Poke :-) >>>>>>> >>>>>>> One more thing I tried was pushing the power button on the slot >>>>>>> manually. With acpiphp, I get the same messages as above. Using pciehp, >>>>>>> I get the same power fault bit interrupt storm. So no difference from >>>>>>> using the sysfs interface or doing it on the box side, doesn't work >>>>>>> either way. >>>>>>> >>>>>> I'd like to confirm power fault interrupt storm, just in case. >>>>>> Could you get /proc/interrupts information after power fault >>>>>> problem happens and send it to me? >>>>> The box pretty much hangs when I try to power on a slot with pciehp, so >>>>> it's not easy to do... It doesn't hang with acpiphp, but doesn't work >>>>> either (see previous reply to Alex). >>>>> >>>> Could you try the attached debugging patch? With this patch, power >>>> fault interrupt would be disabled after 100 power fault detected ( >>>> I hope so). You can get /proc/interrupts after that. >>> Here is the output of doing the power on with that patch applied. >>> >>> pciehp 0000:00:05.0:pcie04: enable_slot: physical_slot = 1 >>> pciehp 0000:00:05.0:pcie04: pciehp_get_power_status: SLOTCTRL a8 value read 77b >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 10 >>> pciehp 0000:00:05.0:pcie04: pciehp_power_on_slot: SLOTCTRL a8 write cmd 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 10 >>> pciehp 0000:00:05.0:pcie04: pciehp_green_led_blink: SLOTCTRL a8 write cmd 200 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: Power fault interrupt received >>> pciehp 0000:00:05.0:pcie04: Power fault on Slot(1) >>> pciehp 0000:00:05.0:pcie04: Power fault bit 0 set >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 2 >>> pciehp 0000:00:05.0:pcie04: Data Link Layer Link Active not set in 1000 msec >>> pciehp 0000:00:05.0:pcie04: pciehp_check_link_status: lnk_status = 1001 >>> pciehp 0000:00:05.0:pcie04: Link Training Error occurs pciehp >>> 0000:00:05.0:pcie04: Failed to check link status >>> pciehp 0000:00:05.0:pcie04: Command not completed in 1000 msec >>> pciehp 0000:00:05.0:pcie04: pciehp_set_attention_status: SLOTCTRL a8 write cmd 40 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 12 >>> pciehp 0000:00:05.0:pcie04: pciehp_green_led_off: SLOTCTRL a8 write cmd 300 >>> pciehp 0000:00:05.0:pcie04: pcie_isr: intr_loc 12 >>> pciehp 0000:00:05.0:pcie04: pciehp_power_off_slot: SLOTCTRL a8 write cmd 400 >>> pciehp 0000:00:05.0:pcie04: Command not completed in 1000 msec >>> pciehp 0000:00:05.0:pcie04: pciehp_green_led_off: SLOTCTRL a8 write cmd 300 >>> pciehp 0000:00:05.0:pcie04: Command not completed in 1000 msec >>> pciehp 0000:00:05.0:pcie04: pciehp_set_attention_status: SLOTCTRL a8 write cmd 40 >>> pciehp 0000:00:05.0:pcie04: pciehp_get_power_status: SLOTCTRL a8 value read 779 >>> pciehp 0000:00:05.0:pcie04: pciehp_get_attention_status: SLOTCTRL a8, value read 779 >>> >> From the console log, it seems that my debug patch worked as I expected >> (power fault event interrupts ware disabled after 100 power fault event). >> But for some reasons, /proc/interrupts indicates only 5 interrupts of >> pciehp. Just in case, did you get /proc/interrupts after doing power on? > > Nope, it was captured post the power on attempt and the above log dump. > Can I confirm that? (sorry for my poor English skill) The /proc/interrupt was captured *before* the power on attempt and the log. Correct? Thanks, Kenji Kaneshige -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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