Heiner Kallweit <hkallwe...@gmail.com> 於 2019年10月2日 週三 下午1:54寫道：
>
> On 26.07.2019 21:05, Heiner Kallweit wrote:
> > On 24.07.2019 22:02, Heiner Kallweit wrote:
> >> On 24.07.2019 10:19, Jian-Hong Pan wrote:
> >>> Hi all,
> >>>
> >>> We have got a consumer desktop equipped with Realtek RTL8125 2.5GB
> >>> Ethernet [1] recently. But, there is no related driver in mainline
> >>> kernel yet. So, we can only use the vendor driver [2] and customize
> >>> it [3] right now.
> >>>
> >>> Is anyone working on an upstream driver for this hardware?
> >>>
> >> At least I'm not aware of any such work. Issue with Realtek is that
> >> they answer individual questions very quickly but company policy is
> >> to not release any datasheets or errata documentation.
> >> RTL8169 inherited a lot from RTL8139, so I would expect that the
> >> r8169 driver could be a good basis for a RTL8125 mainline driver.
> >>
> > Meanwhile I had a look at the RTL8125 vendor driver. Most parts are
> > quite similar to RTL8168. However the PHY handling is quite weird.
> > 2.5Gbps isn't covered by Clause 22, but instead of switching to
> > Clause 45 Realtek uses Clause 22 plus a proprietary chip register
> > (for controlling the 2.5Gbps mode) that doesn't seem to be accessible
> > via MDIO bus. This may make using phylib tricky.
> >
> In case you haven't seen it yet: Meanwhile I added RTL8125 support to
> phylib and r8169, it's included in 5.4-rc1. I tested it on a
> RTL8125-based PCIe add-on card, feedback from your system would be
> appreciated. Note that you also need latest linux-firmware package
> from Sep 23rd.
Thank you!!!
I tried kernel 5.4.0-rc1 on the desktop equipped with Realtek RTL8125
2.5GB Ethernet.
$ sudo lspci -nnvs 04:00.0
[sudo] password for dev:
04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
Device [10ec:8125] (rev 01)
Subsystem: Acer Incorporated [ALI] Device [1025:1354]
Flags: bus master, fast devsel, latency 0, IRQ 17
I/O ports at 3000 [size=256]
Memory at a4200000 (64-bit, non-prefetchable) [size=64K]
Memory at a4210000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
Capabilities: [70] Express Endpoint, MSI 01
Capabilities: [b0] MSI-X: Enable+ Count=4 Masked-
Capabilities: [d0] Vital Product Data
Capabilities: [100] Advanced Error Reporting
Capabilities: [148] Virtual Channel
Capabilities: [168] Device Serial Number 01-00-00-00-68-4c-e0-00
Capabilities: [178] Alternative Routing-ID Interpretation (ARI)
Capabilities: [188] Single Root I/O Virtualization (SR-IOV)
Capabilities: [1c8] Transaction Processing Hints
Capabilities: [254] Latency Tolerance Reporting
Capabilities: [25c] L1 PM Substates
Capabilities: [26c] Vendor Specific Information: ID=0002 Rev=4 Len=100 <?>
Kernel driver in use: r8169
Kernel modules: r8169
Module r8169 works for it.
$ dmesg | grep r8169
[ 19.631623] libphy: r8169: probed
[ 19.631978] r8169 0000:04:00.0 eth0: RTL8125, 94:c6:91:5f:1f:45,
XID 609, IRQ 127
[ 19.631983] r8169 0000:04:00.0 eth0: jumbo features [frames: 9200
bytes, tx checksumming: ko]
[ 19.635492] r8169 0000:04:00.0 enp4s0: renamed from eth0
[ 21.778431] RTL8125 2.5Gbps internal r8169-400:00: attached PHY
driver [RTL8125 2.5Gbps internal] (mii_bus:phy_addr=r8169-400:00,
irq=IGNORE)
[ 21.871953] r8169 0000:04:00.0 enp4s0: Link is Down
[ 24.668516] r8169 0000:04:00.0 enp4s0: Link is Up - 1Gbps/Full -
flow control off
Jian-Hong Pan
> >>> [1]
> >>> https://www.realtek.com/en/press-room/news-releases/item/realtek-launches-world-s-first-single-chip-2-5g-ethernet-controller-for-multiple-applications-including-gaming-solution
> >>> [2]
> >>> https://www.realtek.com/en/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-pci-express-software
> >>> [3]
> >>> https://github.com/endlessm/linux/commit/da1e43f58850d272eb72f571524ed71fd237d32b
> >>>
> >>> Jian-Hong Pan
> >>>
> >> Heiner
> >>
> > Heiner
> >
> Heiner
