Also no such issues are seen in Intel NIC using e1000e driver.
On Tue, Apr 29, 2014 at 9:07 PM, shiv prakash Agarwal <chhotu.s...@gmail.com
> wrote:
> Also if I disable enabling bus master from igb driver, then ethernet
> functionality does not work due to below issue:
>
> root@tegra-ubuntu:~# dhclient eth0
> [ 82.642468] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
> [ 86.741124] igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: RX
> [ 86.763938] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
> [ 96.748110] ------------[ cut here ]------------
> [ 96.756653] WARNING: at
> /home/shiv/kernel_builds/linux/kernel/net/sched/sch_generic.c:255
> dev_watchdog+0x264/0
> x284()
> [ 96.775062] NETDEV WATCHDOG: eth0 (igb): transmit queue 0 timed out
> [ 96.785783] Modules linked in:
> [ 96.791521] CPU: 0 PID: 0 Comm: swapper/0 Not tainted
> 3.10.33-gce40538-dirty #289
> [ 96.804501] [<c00167e0>] (unwind_backtrace+0x0/0x140) from [<c0013134>]
> (show_stack+0x18/0x1c)
> [ 96.819303] [<c0013134>] (show_stack+0x18/0x1c) from [<c0066604>]
> (warn_slowpath_common+0x54/0x70)
> [ 96.834651] [<c0066604>] (warn_slowpath_common+0x54/0x70) from
> [<c00666cc>] (warn_slowpath_fmt+0x38/0x48)
> [ 96.851027] [<c00666cc>] (warn_slowpath_fmt+0x38/0x48) from
> [<c068cd50>] (dev_watchdog+0x264/0x284)
> [ 96.866561] [<c068cd50>] (dev_watchdog+0x264/0x284) from [<c0075be4>]
> (call_timer_fn+0x44/0x15c)
> [ 96.881647] [<c0075be4>] (call_timer_fn+0x44/0x15c) from [<c0075fdc>]
> (run_timer_softirq+0x218/0x2b8)
> [ 96.897412] [<c0075fdc>] (run_timer_softirq+0x218/0x2b8) from
> [<c006e994>] (__do_softirq+0xf4/0x2a0)
> [ 96.913000] [<c006e994>] (__do_softirq+0xf4/0x2a0) from [<c006ebf8>]
> (do_softirq+0x54/0x60)
> [ 96.927287] [<c006ebf8>] (do_softirq+0x54/0x60) from [<c006eea8>]
> (irq_exit+0x98/0xd0)
> [ 96.940975] [<c006eea8>] (irq_exit+0x98/0xd0) from [<c000fa78>]
> (handle_IRQ+0x44/0x98)
> [ 96.954572] [<c000fa78>] (handle_IRQ+0x44/0x98) from [<c00084e4>]
> (gic_handle_irq+0x30/0x64)
> [ 96.969013] [<c00084e4>] (gic_handle_irq+0x30/0x64) from [<c000ec40>]
> (__irq_svc+0x40/0x70)
> [ 96.983212] Exception stack(0xc0b33eb8 to 0xc0b33f00)
> [ 96.991948] 3ea0:
> c0b33f10 00000000
> [ 97.005878] 3ec0: 00000000 000f4240 c1cc2658 c1cc03e8 c0c79744 00000001
> 00002138 00000000
> [ 97.019879] 3ee0: c0b33f08 c07bcd20 3b9ac9ff c0b33f00 c02863bc c003dbd4
> 20000153 ffffffff
> [ 97.034051] [<c000ec40>] (__irq_svc+0x40/0x70) from [<c003dbd4>]
> (tegra_idle_enter_pd+0x11c/0x260)
> [ 97.049398] [<c003dbd4>] (tegra_idle_enter_pd+0x11c/0x260) from
> [<c059135c>] (cpuidle_enter_state+0x48/0x104)
> [ 97.066323] [<c059135c>] (cpuidle_enter_state+0x48/0x104) from
> [<c0591570>] (cpuidle_idle_call+0x158/0x298)
> [ 97.082960] [<c0591570>] (cpuidle_idle_call+0x158/0x298) from
> [<c0010018>] (arch_cpu_idle+0x10/0x40)
> [ 97.098580] [<c0010018>] (arch_cpu_idle+0x10/0x40) from [<c00adf6c>]
> (cpu_idle_loop+0x9c/0x23c)
> [ 97.113506] [<c00adf6c>] (cpu_idle_loop+0x9c/0x23c) from [<c0ab4a28>]
> (start_kernel+0x2c4/0x318)
> [ 97.128431] ---[ end trace 67ee6f365a411999 ]---
> [ 97.153381] igb 0000:01:00.0 eth0: Reset adapter
> [ 101.738002] igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: RX
> [ 121.741066] igb 0000:01:00.0 eth0: Reset adapter
> [ 125.738392] igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: RX
> [ 133.776217] init: alsa-restore main process (814) terminated with
> status 99
> [ 133.856801] init: plymouth-stop pre-start process (843) terminated with
> status 1
> [ 145.741028] igb 0000:01:00.0 eth0: Reset adapter
> [ 149.738496] igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: RX
> [ 164.749112] igb 0000:01:00.0 eth0: Reset adapter
> [ 168.739933] igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: RX
> [ 183.740495] igb 0000:01:00.0 eth0: Reset adapter
> [ 187.738360] igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: RX
> [ 202.749111] igb 0000:01:00.0 eth0: Reset adapter
> [ 206.739319] igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: RX
> [ 216.749057] igb 0000:01:00.0 eth0: Reset adapter
> [ 220.739305] igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: RX
> [ 240.749111] igb 0000:01:00.0 eth0: Reset adapter
> [ 244.739199] igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: RX
> [ 259.740507] igb 0000:01:00.0 eth0: Reset adapter
> [ 263.738512] igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: RX
> [ 278.749107] igb 0000:01:00.0 eth0: Reset adapter
> [ 282.739504] igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: RX
> ------------------------CONTINUES for
> EVER---------------------------------------------------
>
>
> So the issue is enabling bus master(which is must) for this device results
> in any config space write hang thereafter.
>
>
> On Tue, Apr 29, 2014 at 9:06 PM, shiv prakash Agarwal <
> chhotu.s...@gmail.com> wrote:
>
>> Hi All,
>>
>> 1. Sorry, bus master is not enabled by core but my internel driver during
>> enumeration.
>> 2. I disabled this but later pci_set_master from igb driver enables bus
>> master and subsequently any config space write results in hang. Below is
>> log.
>>
>>
>> [ 4.755092] tun: Universal TUN/TAP device driver, 1.6
>> [ 4.760412] tun: (C) 1999-2004 Max Krasnyansky <m...@qualcomm.com>
>> [ 4.767129] igb: Intel(R) Gigabit Ethernet Network Driver - version
>> 5.0.3-k
>> [ 4.774440] igb: Copyright (c) 2007-2013 Intel Corporation.
>> [ 4.780364] PCI: enabling device 0000:01:00.0 (0140 -> 0142)
>> [ 15.325507] Unhandled fault: imprecise external abort (0x1406) at
>> 0x00000000
>> [ 15.332896] Internal error: : 1406 [#1] PREEMPT SMP ARM
>> [ 15.338369] Modules linked in:
>> [ 15.341599] CPU: 0 PID: 1 Comm: swapper/0 Not tainted
>> 3.10.33-gce40538-dirty #290
>> [ 15.349437] task: ef092a40 ti: ef0d6000 task.ti: ef0d6000
>> [ 15.355102] PC is at igb_reset_hw_82580+0xdc/0x244
>> [ 15.360128] LR is at try_to_del_timer_sync+0x5c/0x68
>> [ 15.365330] pc : [<c04697e8>] lr : [<c0076134>] psr: 60000013
>> [ 15.365330] sp : ef0d7de0 ip : 00000000 fp : 00000001
>> [ 15.377337] r10: ef00e000 r9 : 00000000 r8 : 301103b3
>> [ 15.398091] r7 : 0c1c0241 r6 : c0c66000 r5 : 00000000 r4 : ef00e910
>> [ 15.420140] r3 : f0400000 r2 : 00000000 r1 : a0000013 r0 : 00000000
>> [ 15.427067] ata1: SATA link down (SStatus 0 SControl 300)
>> [ 15.462779] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM
>> Segment kernel
>> [ 15.485460] Control: 10c5387d Table: 8000406a DAC: 00000015
>> [ 15.506469]
>> [ 15.506469] PC: 0xc0469768:
>> [ 15.540959] 9768 e19630b3 e3130004 1a000067 f57ff04f e3e02000
>> e5943004 e58320d8 f57ff04f
>> [ 15.564657] 9788 e3a02000 e5943004 e5832100 f57ff04f e3a02008
>> e5943004 e5832400 e5943004
>> [ 15.588227] 97a8 e5932008 f57ff04f e3a0000a ebf032ad e3550000
>> 1a00002f e3a05000 e3877301
>> [ 15.611781] 97c8 f57ff04f e5943004 e5837000 e5943004 e5932008
>> f57ff04f e3550000 1a000032
>> [ 15.635375] 97e8 e1a00004 eb000c16 e3500000 0a000003 e30031f2
>> e19630b3 e3130004 1a00003b
>> [ 15.658895] 9808 f57ff04f e3a02601 e5943004 e5832008 f57ff04f
>> e3e02000 e5943004 e58320d8
>> [ 15.682360] 9828 e5943004 e59320c0 f57ff04f e1a00004 ebfffb62
>> e3500000 0a000003 e300320a
>> [ 15.705742] 9848 e19630b3 e3130004 1a000021 e1a00004 eb000707
>> e3550000 e1a06000 0a000003
>> [ 15.729109]
>> [ 15.729109] LR: 0xc00760b4:
>> [ 15.762894] 60b4 e1a01000 e5943000 e1560003 1a000001 e1a00007
>> e8bd80f8 e1a00007 eb1cebf1
>> [ 15.786093] 60d4 eafffff0 e92d4030 e24dd00c e92d4000 e8bd4000
>> e1a05000 e28d1004 e280000c
>> [ 15.809207] 60f4 ebffffe3 e5903004 e1a04000 e1530005 03e05000
>> 0a000006 e3a03000 e1a00005
>> [ 15.832362] 6114 e5853020 e1a01004 e3a02001 ebfffe5e e1a05000
>> e1a00004 e59d1004 eb1cebd9
>> [ 15.855667] 6134 e1a00005 e28dd00c e8bd8030 e92d4010 e92d4000
>> e8bd4000 e1a0300d e3c32d7f
>> [ 15.879163] 6154 e3a03000 e3c2203f e34033ff e5922004 e1a04000
>> e0023003 e3530000 0a000009
>> [ 15.902736] 6174 e590300c e3130002 1a000006 e59f0028 e3001424
>> ebffc124 e1a00004 ebffffd0
>> [ 15.926442] 6194 e3500000 aa000003 e1a00004 ebffffcc e3500000
>> bafffffb e8bd8010 c096c744
>> [ 15.950171]
>> [ 15.950171] SP: 0xef0d7d60:
>> [ 15.984886] 7d60 fdc42000 ef0d6000 60000013 ffffffff ef0d7dcc
>> c000ec60 ef0d6000 ef00e000
>> [ 16.008775] 7d80 c04697e8 60000013 ffffffff ef0d7dcc 301103b3
>> c000ebd8 00000000 a0000013
>> [ 16.032678] 7da0 00000000 f0400000 ef00e910 00000000 c0c66000
>> 0c1c0241 301103b3 00000000
>> [ 16.056575] 7dc0 ef00e000 00000001 00000000 ef0d7de0 c0076134
>> c04697e8 60000013 ffffffff
>> [ 16.080528] 7de0 c046970c eb704000 00000000 ef00e4c0 eb704068
>> c045f978 eb704068 c03e9270
>> [ 16.104568] 7e00 30110193 00000002 30110393 00000000 00110013
>> 00000000 ef00e920 ef00e910
>> [ 16.128769] 7e20 eb704068 60000013 00000004 00004f38 c0b2c604
>> eb704000 ef0d7e74 c0c220bc
>> [ 16.152801] 7e40 eb704068 c0c64f38 c0b2c604 c0c220f0 00000000
>> c02bb0cc c081637c eb704000
>> [ 16.176726]
>> [ 16.176726] R3: 0xf03fff80:
>> [ 16.211382] ff80 ******** ******** ******** ******** ********
>> ******** ******** ********
>> [ 16.235062] ffa0 ******** ******** ******** ******** ********
>> ******** ******** ********
>> [ 16.258515] ffc0 ******** ******** ******** ******** ********
>> ******** ******** ********
>> [ 16.281734] ffe0 ******** ******** ******** ******** ********
>> ******** ******** ********
>> [ 16.304940] 0000 00000000 00000000 00000000 00000000 00000000
>> 00000000 00000000 00000000
>> [ 100.543440] 0020 00000000 00000000 00000000 00000000 00000000
>> 00000000 00000000 00000000
>> [ 184.781705] 0040
>>
>>
>> On Mon, Apr 28, 2014 at 11:04 PM, Fujinaka, Todd <todd.fujin...@intel.com
>> > wrote:
>>
>>> I'm afraid that the issue you're seeing is with the PCIe in your ARM
>>> system. You're going to have to clear that up before you can get anything
>>> working on the PCIe bus such as an Ethernet controller. I would suggest
>>> contacting an ARM mailing list.
>>>
>>> Todd Fujinaka
>>> Software Application Engineer
>>> Networking Division (ND)
>>> Intel Corporation
>>> todd.fujin...@intel.com
>>> (503) 712-4565
>>>
>>> -----Original Message-----
>>> From: shiv prakash Agarwal [mailto:chhotu.s...@gmail.com]
>>> Sent: Saturday, April 26, 2014 11:04 AM
>>> To: Vick, Matthew
>>> Cc: e1000-devel@lists.sourceforge.net
>>> Subject: Re: [E1000-devel] ARM support for igb driver
>>>
>>> Hi Vick,
>>>
>>> Thanks for response.
>>>
>>> 1. I see this bit is also set while enumeration itself before igb driver
>>> is loaded.
>>> 2. Clearing this bit allows enumeration to be successful, setting it
>>> results in hang of any device config space writes.
>>> 3. Same root complex works for other cards like Intel NIC using e1000e
>>> driver.
>>> 4. Same issue seen with other I210 NIC cards.
>>>
>>>
>>>
>>> On Fri, Apr 25, 2014 at 9:17 PM, Vick, Matthew <matthew.v...@intel.com
>>> >wrote:
>>>
>>> > The device needs to set the Bus Master Enable bit so that it can
>>> > initiate DMA transactions. Without it set, it isn't really functional.
>>> >
>>> > If leaving that bit cleared lets you function, I would think it's
>>> > more of an issue with the root complex or associated bridges than the
>>> > device itself. It's possible it's an issue with the I210 you have, so
>>> > another option could be to try another I210. In either case, you
>>> > really should be contacting your hardware suppliers for support.
>>> >
>>> > Cheers,
>>> > Matthew
>>> >
>>> > From: shiv prakash Agarwal <chhotu.s...@gmail.com>
>>> > Date: Thursday, April 24, 2014 at 10:38 PM
>>> > To: Matthew Vick <matthew.v...@intel.com>
>>> > Cc: Carolyn Wyborny <carolyn.wybo...@intel.com>, "Rose, Gregory V" <
>>> > gregory.v.r...@intel.com>, "Kirsher, Jeffrey T" <
>>> > jeffrey.t.kirs...@intel.com>, "e1000-devel@lists.sourceforge.net" <
>>> > e1000-devel@lists.sourceforge.net>
>>> > Subject: Re: ARM support for igb driver
>>> >
>>> > Thanks Matthew,
>>> >
>>> > On furthur debug, I found that this hang happening on enabling Bus
>>> > Master Enable bit(bit 2) of command register (offset 0x4) in config
>>> space.
>>> > On disabling this bit, no hang occurs.
>>> >
>>> > Any idea on this behaviour?
>>> >
>>> >
>>> >
>>> > On Thu, Apr 24, 2014 at 11:51 PM, Vick, Matthew <
>>> matthew.v...@intel.com>wrote:
>>> >
>>> >> (Top-posting, I know, sorry! I'm adding e1000-devel, our support
>>> >> list for these kinds of inquiries.)
>>> >>
>>> >> It looks like you have a problem at the platform level with a PCI
>>> >> bridge, rather than a problem with our NIC. I think the right next
>>> >> step would be to contact your hardware vendor for your system.
>>> >>
>>> >> Cheers,
>>> >> Matthew
>>> >>
>>> >> From: shiv prakash Agarwal <chhotu.s...@gmail.com>
>>> >> Date: Thursday, April 24, 2014 at 6:38 AM
>>> >> To: Matthew Vick <matthew.v...@intel.com>, Carolyn Wyborny <
>>> >> carolyn.wybo...@intel.com>, "Rose, Gregory V"
>>> >> <gregory.v.r...@intel.com>, "Kirsher, Jeffrey T"
>>> >> <jeffrey.t.kirs...@intel.com>
>>> >> Subject: ARM support for igb driver
>>> >>
>>> >> Hi All,
>>> >>
>>> >> I am using below Intel I210 NIC card using igb driver on ARM
>>> >>
>>> >>
>>> >> http://www.intel.com/content/www/us/en/ethernet-controllers/ethernet-
>>> >> controller-i210-i211-family.html
>>> >>
>>> >> But during configuration stage, it hangs as soon as we do write
>>> >> access to device configuration space.
>>> >>
>>> >> Has anybody tested Intel I210 NIC card using igb driver on ARM? Any
>>> >> idea on above behaviour, log is below:
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >> *PCI host bridge to bus 0000:00 pci_bus 0000:00: root bus resource
>>> >> [mem 0x32100000-0x3fffffff] pci_bus 0000:00: root bus resource [mem
>>> >> 0x12100000-0x320fffff pref] pci_bus 0000:00: root bus resource [io
>>> >> 0x1000-0xffff] pci_bus 0000:00: No busn resource found for root bus,
>>> >> will use [bus 00-ff] pci 0000:00:00.0: [10de:0e12] type 01 class
>>> >> 0x060400 pci
>>> >> 0000:00:00.0: PME# supported from D0 D1 D2 D3hot D3cold PCI: bus0:
>>> >> Fast back to back transfers disabled pci 0000:00:00.0: bridge
>>> >> configuration invalid ([bus 00-00]), reconfiguring pci 0000:01:00.0:
>>> >> [8086:1533] type 00 class 0x020000 pci 0000:01:00.0: reg 10: [mem
>>> >> 0x00000000-0x000fffff] Unhandled fault: imprecise external abort
>>> >> (0x1406) at 0x00000000 Internal
>>> >> error: : 1406 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 1
>>> Comm:
>>> >> swapper/0 Not tainted 3.10.24 #2 task: ef06fa40 ti: ef0b2000 task.ti:
>>> >> ef0b2000*
>>> >>
>>> >
>>> >
>>>
>>
>>
>
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