linux-kernel - Re: r8169: NFG in 2.6.24-rc2

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Date:	Thu, 8 Nov 2007 08:52:56 +0100
From:	Hans-Jürgen Koch <hjk@...utronix.de>
To:	Mark Lord <lkml@....ca>
Cc:	romieu@...zoreil.com, Linux Kernel <linux-kernel@...r.kernel.org>,
	Jeff Garzik <jgarzik@...ox.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: r8169:  NFG in 2.6.24-rc2

Am Wed, 07 Nov 2007 11:07:07 -0500
schrieb Mark Lord <lkml@....ca>:

> My ASUS board has one of these:
> 
> 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
> RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)
> Subsystem: ASUSTeK Computer Inc. Unknown device 81aa Control: I/O+
> Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR-
> FastB2B- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast
> >TAbort- <TAbort- <MAbort- >SERR- <PERR- Interrupt: pin A routed to
> >IRQ 16 Region 0: I/O ports at 9800 [size=256]
>         Region 2: Memory at ff3ff000 (64-bit, non-prefetchable)
> [size=4K] Expansion ROM at ff3c0000 [disabled] [size=128K]
>         Capabilities: [40] Power Management version 2
>                 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
> PME(D0-,D1+,D2+,D3hot+,D3cold+) Status: D0 PME-Enable- DSel=0
> DScale=0 PME- Capabilities: [48] Vital Product Data
>         Capabilities: [50] Message Signalled Interrupts: Mask- 64bit+
> Queue=0/1 Enable- Address: 0000000000000000  Data: 0000
>         Capabilities: [60] Express Endpoint IRQ 0
>                 Device: Supported: MaxPayload 1024 bytes, PhantFunc
> 0, ExtTag+ Device: Latency L0s <1us, L1 unlimited
>                 Device: AtnBtn+ AtnInd+ PwrInd+
>                 Device: Errors: Correctable- Non-Fatal- Fatal-
> Unsupported- Device: RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
>                 Device: MaxPayload 128 bytes, MaxReadReq 4096 bytes
>                 Link: Supported Speed 2.5Gb/s, Width x4, ASPM L0s,
> Port 0 Link: Latency L0s unlimited, L1 unlimited
>                 Link: ASPM Disabled RCB 64 bytes CommClk+ ExtSynch-
>                 Link: Speed 2.5Gb/s, Width x1
>         Capabilities: [84] Vendor Specific Information
> 
> It works perfectly in 2.6.23.
> It does not work in 2.6.24-rc2.  Dunno about -rc1 or earlier -git*.
> 
> Without CONFIG_PCI_MSI, it works slightly, enough to ping it a couple
> of times, but it then dies when used for anything real:
> 
> 	r8169 Gigabit Ethernet driver 2.2LK loaded
> 	r8169 0000:01:00.0: no MSI. Back to INTx.
> 	...
> 	eth0: RTL8168b/8111b at 0xf884a000, 00:17:31:64:e0:bc, XID
> 30000000 IRQ 16 ...
> 	r8169: eth0: link up
> 	...
> 	kernel: NETDEV WATCHDOG: eth0: transmit timed out
> 	r8169: eth0: link up
> 	...
> Not usable from this point on.

Same problem here with a MSI K9AGM2 board. The problem appeared in
2.6.24-rc1 (http://bugzilla.kernel.org/show_bug.cgi?id=9257).

It seems to be better in -rc2, at least the chip is detected again. I
can assign an IP to that interface and bring it up, but no data traffic
is possible. After some tests in both directions, ifconfig reports 157.6
KiB RX bytes, but TX bytes is 0, so sent packets seem to disappear
quite early.

Thanks,
Hans
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