<Forwarding to bigger aliases> Anybody aware of hang in r8169 driver over pcie interface mentioned at bottom of this mail? -----Original Message----- From: Jay Agarwal Sent: Tuesday, June 04, 2013 7:17 PM To: 'Stephen Warren' Cc: 'thierry.reding@xxxxxxxxxxxxxxxxx' Subject: RE: [PATCH 4/4] ARM: tegra: pcie: Enable PCIe controller on Cardhu > > > > > On 05/31/2013 06:17 AM, Jay Agarwal wrote: > > > > > >>> I have taken care of all your comments, but Ethernet > > > > > >>> device is not working > > > > > >> for me neither on cardhu nor harmony. > > > > > >>> Could be related to my process or board, Currently > > > > > >>> debugging > this. > > > > > >> > > > > > >> Are you talking about a PCIe-based Ethernet device on > > > > > >> Harmony, or the one that's built into the board? > > > > > >> > > > > > >> The on-board Ethernet device is USB, and should work fine > > > > > >> already, and irrespective of any PCIe patches. > > > > > > > > > > > > No I am talking about ethernet over PCIe interface. There > > > > > > is no problem > > > > > with built-in ethernet over USB. > > > > > > > > > > > >> I have only tried an XHCI USB controller in the PCIe slot > > > > > >> on Harmony, so I can't say if Ethernet not working is a > > > > > >> regression or not. Does the Ethernet device work with just > > > > > >> Thierry's patches and not > > > > yours? > > > > > > > > > > > > It does not work w/o any of my patches also. > > > > > > > > > > > > Thierry, > > > > > > Have you verified any ethernet card working on harmony? > > > > > > I am using Broadcom Ethernet card with TIGON3 driver, but it > > > > > > does not > > > > > work although PCIe enumeration and driver probe looks fine as > > > attached. > > > > > > Any idea? > > > > > > > > > > Oh, one thing to consider here: PCIe interrupts don't work > > > > > correctly when > > > > > LP2 is enabled, at least in the upstream kernel. It's > > > > > something I've been trying to investigate, but haven't tracked down yet. > > > > > > > > > > Anyway, you need to disable the LP2 CPU power management state > > > > > for sure. > > > > > Hopefully this will solve the issue for you. One way to do > > > > > this is the following patch, although we need a better > > > > > solution before we can actually merge anything: > > > > > > > > > > https://patchwork.kernel.org/patch/2525151/ > > > > Stephen, > > > > This patch also did not resolve the issue although I do get > > > > "Disabling > > > > LP2 cpuidle state..." message in logs. > > > > > > It stucks as below: > > > > > > root@localhost:~# dhclient eth0 > > > [ 1444.579544] smsc95xx 3-1.1:1.0 eth0: hardware isn't capable of > > > remote wakeup [ 1444.587300] IPv6: ADDRCONF(NETDEV_UP): eth0: link > > > is not ready > > > > My system does not have ping command, so dhclient fails like below: > > /sbin/dhclient-script: line 325: ping: command not found > > > > So I provided static IP as : ifconfig eth0 <IP> but it also did not help. > > Actually sorry, I was using wrong Ethernet interface(eth0) on > harmony, but correct one is eth1(over pcie interface) which works fine > on Thierry's repo after applying patches to disable LP2. > Now I will try after applying my patches on both harmony and cardhu. Ethernet is working on harmony is working w/ & a/o my patches but cardhu is hanging as below: root@localhost:~# ifconfig eth0 10.19.65.115 [ 102.525245] r8169 0000:03:00.0 eth0: unable to load firmware patch rtl_nic/rtl8168e-3.fw (-2) [ 102.951516] r8169 0000:03:00.0 eth0: rtl_phyar_cond == 1 (loop: 20, delay: 25). <System hangs here..> 1. Harmony is using Broadcom pcie Ethernet card and cardhu is using realtek one. 2. Enumeration and lspci seems to be fine though. 3. I tried applying similar patches for disabling LP2 for tegra 3 as well but it did not help. 4. Any idea/opinion? -- 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
