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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