On Tue, Sep 03, 2013 at 12:38:06PM -0700, Yinghai Lu wrote: > On Tue, Sep 3, 2013 at 2:55 AM, Johannes Thumshirn > <johannes.thumshirn@xxxxxx> wrote: > > > > As far as I can see with my layman's eyes is, it finds the subordinate busses > > 1-5 behind the bridge but then somehow looses them again in the enumeration > > phase. > > fsl-pci fe200000.pcie: PCI host bridge to bus 0000:00 > pci_bus 0000:00: root bus resource [io 0x0000-0xffff] > pci_bus 0000:00: root bus resource [mem 0x80000000-0x9fffffff] > pci_bus 0000:00: root bus resource [bus 00-ff] > pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to ff > pci_bus 0000:00: scanning bus > pci 0000:00:00.0: [1957:0401] type 01 class 0x0b2000 > pci 0000:00:00.0: ignoring class 0x0b2000 (doesn't match header type 01) > pci 0000:00:00.0: calling fixup_hide_host_resource_fsl+0x0/0x6c > calling fixup_hide_host_resource_fsl+ > 0x0/0x6c @ 1 for 0000:00:00.0 > pci fixup fixup_hide_host_resource_fsl+0x0/0x6c returned after 0 usecs > for 0000:00:00.0 > pci 0000:00:00.0: calling pcibios_fixup_resources+0x0/0x128 > calling pcibios_fixup_resources+0x0/0x128 @ 1 for 0000:00:00.0 > pci fixup pcibios_fixup_resources+0x0/0x128 returned after 0 usecs for > 0000:00:00.0 > pci 0000:00:00.0: calling quirk_fsl_pcie_header+0x0/0x84 > calling quirk_fsl_pcie_header+0x0/0x84 @ 1 for 0000:00:00.0 > pci fixup quirk_fsl_pcie_header+0x0/0x84 returned after 0 usecs for 0000:00:00.0 > > ===> it overrides the class from 0b2000 to 060400 > > pci 0000:00:00.0: supports D1 D2 > pci 0000:00:00.0: PME# supported from D0 D1 D2 D3hot D3cold > pci 0000:00:00.0: PME# disabled > pci 0000:00:00.0: scanning [bus 01-05] behind bridge, pass 0 > pci 0000:00:00.0: check if busn 01-05 is in busn_res: [bus 00-ff] > > > pci_bus 0000:00: fixups for bus > pci 0000:00:00.0: scanning [bus 00-00] behind bridge, pass 1 > > ====> > > so you have PCI_REASSIGN_ALL_BUS set ... > > pci_bus 0000:01: busn_res: [bus 01-08] is updated under [bus 00-ff] > pci_bus 0000:01: scanning bus > > ====> should have child devices probed here... but not happen... > > so your pcie switch will need more time to settle down? > > pci_bus 0000:01: fixups for bus > pci 0000:00:00.0: PCI bridge to [bus 01-08] > pci 0000:00:00.0: bridge window [io 0x1000-0x1fff] > pci 0000:00:00.0: bridge window [mem 0x80000000-0x801fffff] > pci_bus 0000:01: bus scan returning with max=01 > pci_bus 0000:01: busn_res: [bus 01-08] end is updated to 01 > pci_bus 0000:00: bus scan returning with max=01 > pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 01 This is what I've thought as well, so I've put an msleep(5000) into pci_scan_child_bus' loop. But this didn't improve the situation either. As I've already said, I ran out of ideas with this problem. -- 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
