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Date: Wed, 12 Oct 2011 10:35:59 +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 ) On 12/10/11 08:36, Kenji Kaneshige wrote: > Hello, > > According to your dmesg output, pciehp driver doesn't detect any PCIe > hotplug slot. Can you send the following information? > > - ls -lR /sys/bus/pci/slots > - lspci -vvvv (as root user) Hallo, - I tested my system with: * A standard WiFi card (Network controller: Ralink corp. RT2860 --- Belkin Device 817c --- Kernel modules: rt2800pci). * My FPGA board. - I did the following: * I booted the system without the express card & without my FPGA board. 1 - Introduce the express card & my FPGA board after the system has booted up. 2 - lspci -vt doesn't show the express card & FPGA board, express card divers did not loaded (lsmod). 3 - lspci -vt doesn't show my FPGA board. 4 - Rescan the PCIe bus "echo 1 > /sys/bus/pci/rescan" 5 - The express card gets detected (lspci), drivers get loaded (lsmod), But ifconfig doesn't show the interface (wlan0). 6 - My FPGA board gets detected (lspci), but I could not access its registers 0xffffffff. dmesg : [ 152.045433] pci 0000:01:00.0: [1814:0781] type 0 class 0x000280 [ 152.045602] pci 0000:01:00.0: reg 10: [mem 0x00000000-0x0000ffff] [ 152.045854] pci 0000:01:00.0: PME# supported from D0 D3hot [ 152.045980] pci 0000:01:00.0: PME# disabled [ 152.046263] radeon 0000:00:01.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [ 152.046452] pci 0000:01:00.0: BAR 0: assigned [mem 0x40400000-0x4040ffff] [ 152.046606] pci 0000:01:00.0: BAR 0: set to [mem 0x40400000-0x4040ffff] (PCI address [0x40400000-0x4040ffff]) [ 152.075665] cfg80211: Calling CRDA to update world regulatory domain [ 152.116429] rt2800pci 0000:01:00.0: enabling device (0000 -> 0002) [ 152.116598] rt2800pci 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 152.116770] rt2800pci 0000:01:00.0: setting latency timer to 64 [ 152.127146] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.137537] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.147926] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.158332] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.168723] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.179115] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.189489] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.199864] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.210256] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.220634] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.231088] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.241463] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.251865] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.262270] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.276185] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.290055] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.303865] phy0 -> rt2x00pci_regbusy_read: Error - Indirect register access failed: offset=0x00000580, value=0xffffffff [ 152.307477] phy0 -> rt2800_init_eeprom: Error - Invalid RT chipset detected. [ 152.311073] phy0 -> rt2x00lib_probe_dev: Error - Failed to allocate device. [ 152.314700] rt2800pci 0000:01:00.0: PCI INT A disabled [ 172.830318] pci 0000:02:00.0: [1234:0002] type 0 class 0x001180 [ 172.833754] pci 0000:02:00.0: reg 10: [mem 0x00000000-0x00000fff 64bit pref] [ 172.837127] pci 0000:02:00.0: reg 18: [mem 0x00000000-0x0003ffff 64bit pref] [ 172.840456] pci 0000:02:00.0: reg 20: [mem 0x00000000-0x00000fff 64bit pref] [ 172.843964] radeon 0000:00:01.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [ 172.847331] pci 0000:02:00.0: BAR 2: assigned [mem 0x40200000-0x4023ffff 64bit pref] [ 172.850728] pci 0000:02:00.0: BAR 2: set to [mem 0x40200000-0x4023ffff 64bit pref] (PCI address [0x40200000-0x4023ffff]) [ 172.854231] pci 0000:02:00.0: BAR 0: assigned [mem 0x40240000-0x40240fff 64bit pref] [ 172.857771] pci 0000:02:00.0: BAR 0: set to [mem 0x40240000-0x40240fff 64bit pref] (PCI address [0x40240000-0x40240fff]) [ 172.861339] pci 0000:02:00.0: BAR 4: assigned [mem 0x40241000-0x40241fff 64bit pref] [ 172.864997] pci 0000:02:00.0: BAR 4: set to [mem 0x40241000-0x40241fff 64bit pref] (PCI address [0x40241000-0x40241fff]) 7 - Reset the express card "echo 1 > /sys/bus/pci/devices/0000\:01\:00.0/reset". But ifconfig still doesn't show the interface (wlan0) dmesg : [ 731.717117] pci 0000:01:00.0: restoring config space at offset 0x1 (was 0x100400, writing 0x100002) 8 - Reset my FPGA board "echo 1 > /sys/bus/pci/devices/0000\:02\:00.0/reset". Still I could not access into my FPGA registers. logs : [root@...alhost ~]# echo 1 > /sys/bus/pci/devices/0000\:02\:00.0/reset -bash: echo: write error: Invalid argument dmesg : [ 910.928564] pci 0000:02:00.0: restoring config space at offset 0x1 (was 0x100400, writing 0x100000) * I have attached to you the requested information. Many thanks, Ghani View attachment "lspci-full.txt" of type "text/plain" (20906 bytes) View attachment "slots.txt" of type "text/plain" (3388 bytes)
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