Discussion:
PCIe issues with Octeon board
(too old to reply)
Jorge Pereira
2018-03-13 03:27:59 UTC
Permalink
Hi,

I am trying to run the Kernel 4.4.92 (openwrt v17 version) on my Octeon
III, But I am expirencing a Kernel ops during the PCIe detection as the
below snip.

[ 0.000000] Linux version 4.4.92-Krishna (***@dev1) (gcc version 5.4.0
(LEDE GCC 5.4.0 r3560-79f57e422d) ) #0 SMP Tue Oct 17 17:46:20 2017
[ 0.000000] Skipping L2 locking due to reduced L2 cache size
..............
[ 18.893643] PCI host bridge to bus 0000:00
[ 18.897602] pci_bus 0000:00: root bus resource [mem
0x11b00f0000000-0x11b0130000000] (bus address [0xf0000000-0x130000000])
[ 18.908675] pci_bus 0000:00: root bus resource [io 0x4000-0xffffffff]
[ 18.915179] pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]
[ 18.921973] pci_bus 0000:00: No busn resource found for root bus, will use
[bus 00-ff]
[ 21.474878] Data bus error, epc == ffffffff843b4810, ra == ffffffff8428edac
[ 21.481662] Oops[#1]:
[ 21.483917] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.92-Krishina #0
[ 21.490593] task: 800000003fc74008 ti: 800000003fc78000 task.ti:
800000003fc78000
[ 21.498047] $ 0 : 0000000000000000 0000000014009ce0 8001190400003800
0000000000000001
[ 21.506025] $ 4 : 800000003f469800 0000000000000038 0000000000000000
0000000000000004
[ 21.514004] $ 8 : 800000003fc7bbbc 0000000000000003 0000000000000000
ffffffff8428ed88
[ 21.521982] $12 : fffffffff8000000 0000000008000000 ffffffffac000000
0000000003bf0000
[ 21.529960] $16 : 800000003f469800 0000000000000038 ffffffff84780000
0000000000000000
[ 21.537938] $20 : 800000003fc7bc4c 0000000000000001 ffffffff847a92b8
ffffffff85040000
[ 21.545917] $24 : 0000000003bd0000 ffffffffbc000000
[ 21.553895] $28 : 800000003fc78000 800000003fc7bbb0 ffffffff85040000
ffffffff8428edac
[ 21.561873] Hi : 0000000000000000
[ 21.565429] Lo : 0000000000000000
[ 21.568995] epc : ffffffff843b4810 octeon_read_config+0x64/0x94
[ 21.575061] ra : ffffffff8428edac pci_bus_read_config_dword+0x6c/0xb4
[ 21.581732] Status: 14009ce2 KX SX UX KERNEL EXL
[ 21.586416] Cause : 4080801c (ExcCode 07)
[ 21.590405] PrId : 000d9602 (Cavium Octeon III)
[ 21.595000] Modules linked in:
[ 21.598038] Process swapper/0 (pid: 1, threadinfo=800000003fc78000,
task=800000003fc74008, tls=0000000000000000)
[ 21.608182] Stack : 0000000000000038 ffffffff00000000 0000000000000000
0000000000000038
800000003fc7bc4c 0000000000000038 800000003f469800 000000000000ea60
0000000000000038 ffffffff84290cb0 800000003f469800 800000003f469800
0000000000000038 0000000000000100 ffffffff84764b90 0000000000000000
ffffffff847a92b8 ffffffff842924d8 ffffffff84769cd0 00000000ffffffff
800000003f469880 800000003f469800 800000003f469800 0000000000000038
0000000000000100 ffffffff842925c4 800000003f469800 0000000000000038
0000000000000000 0000000000000100 ffffffff84764b90 ffffffff84293534
0000000000000000 800000003f469800 0000000000000000 0000000000000000
0000000000000000 ffffffff84764b90 0000000000000000 ffffffff84293828
...
[ 21.673048] Call Trace:
[ 21.675480] [<ffffffff843b4810>] octeon_read_config+0x64/0x94
[ 21.681205] [<ffffffff8428edac>] pci_bus_read_config_dword+0x6c/0xb4
[ 21.687536] [<ffffffff84290cb0>] pci_bus_read_dev_vendor_id+0x44/0x110
[ 21.694040] [<ffffffff842924d8>] pci_scan_single_device+0x50/0xd4
[ 21.700109] [<ffffffff842925c4>] pci_scan_slot+0x68/0x120

I appreciate any clue.
--
Jorge Pereira
--
Jorge Pereira
--
Jorge Pereira
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