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Date: Thu, 3 Nov 2011 16:51:35 +0400
From: Kirill Smelkov <kirr@....spb.ru>
To: Stephen Hemminger <shemminger@...tta.com>
Cc: Pavel Matěja <pavel@...safe.cz>,
netdev@...r.kernel.org
Subject: Re: sky2: only 10Mb/s
On Mon, Oct 17, 2011 at 10:53:39PM +0200, Pavel Matěja wrote:
> > > Hi,
> > > I tested new kernel and I have found out I have only 10Mb/s link instead
> > > of 100Mb/s to my router.
> > > If I did the git bisect right it was caused by commit
> > > 4fb99cd6ac4fe6d03a334a6f4ebb2bbfc4b479ed which was submitted by you.
> > >
> > > My card is (lspci -v):
> > > 05:00.0 Ethernet controller: Marvell Technology Group Ltd. Yukon Optima
> > > 88E8059 [PCIe Gigabit Ethernet Controller with AVB] (rev 11)
> > >
> > > Subsystem: ASUSTeK Computer Inc. Device 8439
> > > Flags: bus master, fast devsel, latency 0, IRQ 80
> > > Memory at fe6fc000 (64-bit, non-prefetchable) [size=16K]
> > > I/O ports at b800 [size=256]
> > > Expansion ROM at fe6c0000 [disabled] [size=128K]
> > > Capabilities: [48] Power Management version 3
> > > Capabilities: [5c] MSI: Enable+ Count=1/1 Maskable- 64bit+
> > > Capabilities: [c0] Express Legacy Endpoint, MSI 00
> > > Capabilities: [100] Advanced Error Reporting
> > > Capabilities: [130] Device Serial Number a5-89-6d-ff-ff-30-cf-20
> > > Kernel driver in use: sky2
> > >
> > > I'm quite sure it's related to Yukon Optima because "Ethernet controller:
> > > Marvell Technology Group Ltd. 88E8056 PCI-E Gigabit Ethernet Controller"
> > > in my work computer has 100Mb/s with the same kernel and driver.
> > >
> > > I got no response on netdev@...r.kernel.org.
> > > Can you help me?
> >
> > What is output of dmesg for sky2.
> > dmesg | grep sky2
>
> sky2: driver version 1.28
> sky2 0000:05:00.0: PCI INT A -> GSI 51 (level, low) -> IRQ 51
> sky2 0000:05:00.0: setting latency timer to 64
> sky2 0000:05:00.0: Yukon-2 Optima chip revision 1
> sky2 0000:05:00.0: irq 80 for MSI/MSI-X
> sky2 0000:05:00.0: eth0: addr 20:cf:30:6d:89:a5
> sky2 0000:05:00.0: eth0: enabling interface
> sky2 0000:05:00.0: eth0: Link is up at 10 Mbps, full duplex, flow control both
Similar problem here with 3.1.0 kernel:
# dmesg |grep sky2 (on 3.1.0)
[ 2.417340] sky2: driver version 1.29
[ 2.419844] sky2 0000:02:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
[ 2.422393] sky2 0000:02:00.0: setting latency timer to 64
[ 2.422444] sky2 0000:02:00.0: Yukon-2 Optima chip revision 1
[ 2.425414] sky2 0000:02:00.0: irq 42 for MSI/MSI-X
[ 2.426144] sky2 0000:02:00.0: eth0: addr 1c:c1:de:ae:73:8a
[ 10.836737] sky2 0000:02:00.0: eth0: enabling interface
[ 12.710240] sky2 0000:02:00.0: eth0: Link is up at 10 Mbps, full duplex, flow control rx
it used to setup the link to switch at 1 Gbps with Linux 3.0:
# dmesg |grep sky2 (on 3.0.0)
[ 2.442283] sky2: driver version 1.28
[ 2.444818] sky2 0000:02:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
[ 2.447345] sky2 0000:02:00.0: setting latency timer to 64
[ 2.447397] sky2 0000:02:00.0: Yukon-2 Optima chip revision 1
[ 2.450062] sky2 0000:02:00.0: irq 42 for MSI/MSI-X
[ 2.450712] sky2 0000:02:00.0: eth0: addr 1c:c1:de:ae:73:8a
[ 11.352480] sky2 0000:02:00.0: eth0: enabling interface
[ 13.824540] sky2 0000:02:00.0: eth0: Link is up at 1000 Mbps, full duplex, flow control rx
[ 13.827178] sky2 0000:02:00.0: eth0: Link is up at 1000 Mbps, full duplex, flow control rx
(strangely it puts 2 lines about "link is up")
Reverting 8dc47b9c2c9e9f607268f6bf3e85408123a36bca "sky2: support for
new Optima chipsets (EXPERIMENTAL)" helps.
# lspci -vv -s 02:00.0 (same with both 3.1.0 and 3.0.0)
02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8059 PCI-E Gigabit Ethernet Controller (rev 11)
Subsystem: Hewlett-Packard Company Device 1608
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 42
Region 0: Memory at 50100000 (64-bit, non-prefetchable) [size=16K]
Region 2: I/O ports at 2000 [size=256]
Expansion ROM at 50600000 [disabled] [size=128K]
Capabilities: [48] Power Management version 3
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] Vital Product Data
Product Name: Marvell Yukon 88E8059 Gigabit Ethernet Controller
Read-only fields:
[PN] Part number: Yukon 88E8059
[EC] Engineering changes: Rev. 1.0
[MN] Manufacture ID: 4d 61 72 76 65 6c 6c
[SN] Serial number: AbCdEfGAE738A
[CP] Extended capability: 01 10 cc 03
[RV] Reserved: checksum good, 9 byte(s) reserved
Read/write fields:
[RW] Read-write area: 121 byte(s) free
End
Capabilities: [5c] MSI: Enable+ Count=1/1 Maskable- 64bit+
Address: 00000000fee0300c Data: 4169
Capabilities: [c0] Express (v2) Legacy Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <1us, L1 <32us
ClockPM+ Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- Retrain- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Not Supported, TimeoutDis+
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -6dB
Kernel driver in use: sky2
Thanks beforehand,
Kirill
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