Date: Thu, 30 Oct 2008 19:26:56 +0900 From: Pyun YongHyeon <pyunyh@gmail.com> To: Milan Obuch <freebsd-net@dino.sk> Cc: freebsd-net@freebsd.org Subject: Re: re weird bug Message-ID: <20081030102656.GD78796@cdnetworks.co.kr> In-Reply-To: <200810300829.35980.freebsd-net@dino.sk> References: <200810300829.35980.freebsd-net@dino.sk>
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On Thu, Oct 30, 2008 at 08:29:35AM +0100, Milan Obuch wrote: > Hi, > yesterday I csup'ped my 8-current sources on my MSI Wind netbook (again) and > tried to build new kernel. There is again a problem with re interface. It > just does not work, with following > > re0: <RealTek 8101E/8102E/8102EL PCIe 10/100baseTX> port 0xc000-0xc0ff mem > 0xffd10000-0xffd10fff,0xffd00000-0xffd0ffff irq 16 at device 0.0 on pci1 > re0: Chip rev. 0x34800000 > re0: MAC rev. 0x00200000 > re0: PHY write failed > re0: PHY write failed > re0: MII without any phy! > device_attach: re0 attach returned 6 > > in dmesg. This happened already some time ago, but I did not investigate it, > just reverted to older kernel and later it disappeared. Today I found there > is some timing issue or racing condition - when I boot with verbose message > logging, it works with expected > > re0: <RealTek 8101E/8102E/8102EL PCIe 10/100baseTX> port 0xc000-0xc0ff mem > 0xffd10000-0xffd10fff,0xffd00000-0xffd0ffff irq 16 at device 0.0 on pci1 > re0: Reserved 0x1000 bytes for rid 0x18 type 3 at 0xffd10000 > re0: MSI count : 1 > re0: Chip rev. 0x34800000 > re0: MAC rev. 0x00200000 > miibus0: <MII bus> on re0 > rlphy0: <RTL8201L 10/100 media interface> PHY 1 on miibus0 > rlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto > re0: bpf attached > re0: Ethernet address: 00:1d:92:59:f5:8b > re0: [MPSAFE] > re0: [FILTER] > > So I think some issue could be in miibus or rlphy code. > I am using stripped down kernel with no interfaces, I kldload if_re (and > miibus as dependency), if that matters. > Has anybody an idea or patch to test? Something similar appeared recently on > list, but I would like to get issue commented first (maybe with a pointer to > patch). > That's known issue for newer RealTek PCIe controllers. Would you please try the patch at the following URL? http://people.freebsd.org/~yongari/re/re.ephy.patch.20081021 Since it's not easy to reproduce this issue please make sure to (cold and warm) reboot several times until you can put confidence in the patch. -- Regards, Pyun YongHyeon
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