Toke Høiland-Jørgensen <toke@xxxxxxxxxx> writes: > Bjorn Helgaas <helgaas@xxxxxxxxxx> writes: > >> Another experiment: build kernel without CONFIG_PCIEASPM, set $ROOT >> and $NIC appropriately, and try the following: >> >> # Set $ROOT and $NIC (update to match your system): >> >> # ROOT=00:02.0 >> # NIC=02:00.0 > > (these matched the ath10k card, so just went with that) And since Marek's latest email mentioned that the WLE900 is especially problematic, I also tried with the other slot that has the mt76 in it: # ROOT=00:03.0 # NIC=03:00.0 # setpci -s$ROOT CAP_EXP+0xc.l 0003ac12 # setpci -s$ROOT CAP_EXP+0x10.w 0040 # setpci -s$ROOT CAP_EXP+0x12.w 1011 # setpci -s$NIC CAP_EXP+0xc.l 0047dc11 # setpci -s$NIC CAP_EXP+0x10.w 0000 # setpci -s$NIC CAP_EXP+0x12.w 1011 # setpci -s$ROOT CAP_EXP+0x10.w=0x0020 # sleep 1 # setpci -s$ROOT CAP_EXP+0x12.w 1011 # setpci -s$NIC CAP_EXP+0x12.w 1011 # setpci -s$NIC CAP_EXP+0x10.w=0x0040 # setpci -s$ROOT CAP_EXP+0x10.w=0x0040 # setpci -s$ROOT CAP_EXP+0x10.w=0x0060 # sleep 1 # setpci -s$ROOT CAP_EXP+0x12.w 1011 # setpci -s$NIC CAP_EXP+0x12.w 1011 And based on this I went back and rebuilt the kernel with PCIEASPM enabled, and now both the WLE200 and the MT76 works with this output: [ 1.544429] mvebu-pcie soc:pcie: host bridge /soc/pcie ranges: [ 1.544455] mvebu-pcie soc:pcie: MEM 0x00f1080000..0x00f1081fff -> 0x0000080000 [ 1.544471] mvebu-pcie soc:pcie: MEM 0x00f1040000..0x00f1041fff -> 0x0000040000 [ 1.544485] mvebu-pcie soc:pcie: MEM 0x00f1044000..0x00f1045fff -> 0x0000044000 [ 1.544500] mvebu-pcie soc:pcie: MEM 0x00f1048000..0x00f1049fff -> 0x0000048000 [ 1.544513] mvebu-pcie soc:pcie: MEM 0xffffffffffffffff..0x00fffffffe -> 0x0100000000 [ 1.544527] mvebu-pcie soc:pcie: IO 0xffffffffffffffff..0x00fffffffe -> 0x0100000000 [ 1.544540] mvebu-pcie soc:pcie: MEM 0xffffffffffffffff..0x00fffffffe -> 0x0200000000 [ 1.544552] mvebu-pcie soc:pcie: IO 0xffffffffffffffff..0x00fffffffe -> 0x0200000000 [ 1.544565] mvebu-pcie soc:pcie: MEM 0xffffffffffffffff..0x00fffffffe -> 0x0300000000 [ 1.544577] mvebu-pcie soc:pcie: IO 0xffffffffffffffff..0x00fffffffe -> 0x0300000000 [ 1.544590] mvebu-pcie soc:pcie: MEM 0xffffffffffffffff..0x00fffffffe -> 0x0400000000 [ 1.544599] mvebu-pcie soc:pcie: IO 0xffffffffffffffff..0x00fffffffe -> 0x0400000000 [ 1.544768] mvebu-pcie soc:pcie: PCI host bridge to bus 0000:00 [ 1.544776] pci_bus 0000:00: root bus resource [bus 00-ff] [ 1.544783] pci_bus 0000:00: root bus resource [mem 0xf1080000-0xf1081fff] (bus address [0x00080000-0x00081fff]) [ 1.544789] pci_bus 0000:00: root bus resource [mem 0xf1040000-0xf1041fff] (bus address [0x00040000-0x00041fff]) [ 1.544795] pci_bus 0000:00: root bus resource [mem 0xf1044000-0xf1045fff] (bus address [0x00044000-0x00045fff]) [ 1.544801] pci_bus 0000:00: root bus resource [mem 0xf1048000-0xf1049fff] (bus address [0x00048000-0x00049fff]) [ 1.544806] pci_bus 0000:00: root bus resource [mem 0xe0000000-0xe7ffffff] [ 1.544811] pci_bus 0000:00: root bus resource [io 0x1000-0xeffff] [ 1.544882] pci 0000:00:01.0: [11ab:6820] type 01 class 0x060400 [ 1.544896] pci 0000:00:01.0: reg 0x38: [mem 0x00000000-0x000007ff pref] [ 1.545073] pci 0000:00:02.0: [11ab:6820] type 01 class 0x060400 [ 1.545085] pci 0000:00:02.0: reg 0x38: [mem 0x00000000-0x000007ff pref] [ 1.545237] pci 0000:00:03.0: [11ab:6820] type 01 class 0x060400 [ 1.545250] pci 0000:00:03.0: reg 0x38: [mem 0x00000000-0x000007ff pref] [ 1.546030] PCI: bus0: Fast back to back transfers disabled [ 1.546037] pci 0000:00:01.0: bridge configuration invalid ([bus 00-00]), reconfiguring [ 1.546045] pci 0000:00:02.0: bridge configuration invalid ([bus 00-00]), reconfiguring [ 1.546052] pci 0000:00:03.0: bridge configuration invalid ([bus 00-00]), reconfiguring [ 1.546132] pci 0000:01:00.0: [168c:002e] type 00 class 0x028000 [ 1.546154] pci 0000:01:00.0: reg 0x10: [mem 0xe8000000-0xe800ffff 64bit] [ 1.546263] pci 0000:01:00.0: supports D1 [ 1.546268] pci 0000:01:00.0: PME# supported from D0 D1 D3hot [ 1.546377] pci 0000:00:01.0: ASPM: current common clock configuration is inconsistent, reconfiguring [ 1.602042] PCI: bus1: Fast back to back transfers enabled [ 1.602052] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01 [ 1.602146] pci 0000:02:00.0: [168c:003c] type 00 class 0x028000 [ 1.602169] pci 0000:02:00.0: reg 0x10: [mem 0xea000000-0xea1fffff 64bit] [ 1.602201] pci 0000:02:00.0: reg 0x30: [mem 0xea200000-0xea20ffff pref] [ 1.602280] pci 0000:02:00.0: supports D1 D2 [ 1.602377] pci 0000:00:02.0: ASPM: current common clock configuration is inconsistent, reconfiguring [ 1.632025] PCI: bus2: Fast back to back transfers enabled [ 1.632033] pci_bus 0000:02: busn_res: [bus 02-ff] end is updated to 02 [ 1.632117] pci 0000:03:00.0: [14c3:7612] type 00 class 0x028000 [ 1.632141] pci 0000:03:00.0: reg 0x10: [mem 0xec000000-0xec0fffff 64bit] [ 1.632175] pci 0000:03:00.0: reg 0x30: [mem 0xec100000-0xec10ffff pref] [ 1.632262] pci 0000:03:00.0: PME# supported from D0 D3hot D3cold [ 1.632373] pci 0000:00:03.0: ASPM: current common clock configuration is inconsistent, reconfiguring [ 1.662037] PCI: bus3: Fast back to back transfers disabled [ 1.662045] pci_bus 0000:03: busn_res: [bus 03-ff] end is updated to 03 [ 1.662078] pci 0000:00:01.0: BAR 8: assigned [mem 0xe0000000-0xe00fffff] [ 1.662086] pci 0000:00:02.0: BAR 8: assigned [mem 0xe0200000-0xe04fffff] [ 1.662093] pci 0000:00:03.0: BAR 8: assigned [mem 0xe0600000-0xe07fffff] [ 1.662101] pci 0000:00:01.0: BAR 6: assigned [mem 0xe0100000-0xe01007ff pref] [ 1.662109] pci 0000:00:02.0: BAR 6: assigned [mem 0xe0500000-0xe05007ff pref] [ 1.662116] pci 0000:00:03.0: BAR 6: assigned [mem 0xe0800000-0xe08007ff pref] [ 1.662124] pci 0000:01:00.0: BAR 0: assigned [mem 0xe0000000-0xe000ffff 64bit] [ 1.662135] pci 0000:00:01.0: PCI bridge to [bus 01] [ 1.662142] pci 0000:00:01.0: bridge window [mem 0xe0000000-0xe00fffff] [ 1.662151] pci 0000:02:00.0: BAR 0: assigned [mem 0xe0200000-0xe03fffff 64bit] [ 1.662158] pci 0000:02:00.0: BAR 0: error updating (0xe0200004 != 0xffffffff) [ 1.662164] pci 0000:02:00.0: BAR 0: error updating (high 0x000000 != 0xffffffff) [ 1.662170] pci 0000:02:00.0: BAR 6: assigned [mem 0xe0400000-0xe040ffff pref] [ 1.662176] pci 0000:00:02.0: PCI bridge to [bus 02] [ 1.662182] pci 0000:00:02.0: bridge window [mem 0xe0200000-0xe04fffff] [ 1.662190] pci 0000:03:00.0: BAR 0: assigned [mem 0xe0600000-0xe06fffff 64bit] [ 1.662202] pci 0000:03:00.0: BAR 6: assigned [mem 0xe0700000-0xe070ffff pref] [ 1.662207] pci 0000:00:03.0: PCI bridge to [bus 03] [ 1.662212] pci 0000:00:03.0: bridge window [mem 0xe0600000-0xe07fffff] This has me somewhat puzzled. Investigating further, it turns out that if I *remove* the MT76 card, the WLE200 starts failing again. So with just the WLE* cards plugged in, I went back and tried the setpci sequence again with the WLE200 (with PCIEASPM disabled): # ROOT=00:01.0 # NIC=01:00.0 # setpci -s$ROOT CAP_EXP+0xc.l 0003ac12 # setpci -s$ROOT CAP_EXP+0x10.w 0040 # setpci -s$ROOT CAP_EXP+0x12.w 1011 # setpci -s$NIC CAP_EXP+0xc.l 00033c11 # setpci -s$NIC CAP_EXP+0x10.w 0000 # setpci -s$NIC CAP_EXP+0x12.w 1011 # setpci -s$ROOT CAP_EXP+0x10.w=0x0020 # sleep 1 # setpci -s$ROOT CAP_EXP+0x12.w 1011 # setpci -s$NIC CAP_EXP+0x12.w 1011 # setpci -s$NIC CAP_EXP+0x10.w=0x0040 # setpci -s$ROOT CAP_EXP+0x10.w=0x0040 # setpci -s$ROOT CAP_EXP+0x10.w=0x0060 # sleep 1 # setpci -s$ROOT CAP_EXP+0x12.w 1011 # setpci -s$NIC CAP_EXP+0x12.w 1011 -Toke
