Re: CFT: vr(4)

From: Pyun YongHyeon <pyunyh_at_gmail.com>
Date: Thu, 6 Mar 2008 10:09:50 +0900
On Tue, Mar 04, 2008 at 09:52:42PM -0700, Phil Oleson wrote:
 > Pyun YongHyeon wrote:
 > >On Mon, Mar 03, 2008 at 10:02:07AM -0700, Phil Oleson wrote:
 > > > Pyun YongHyeon wrote:
 > > > >On Mon, Mar 03, 2008 at 10:10:25AM +0100, Milan Obuch wrote:
 > > > > > On Monday 03 March 2008, Pyun YongHyeon wrote:
 > > > > > > On Sat, Mar 01, 2008 at 11:53:41AM -0500, Mike Tancsa wrote:
 > > > > > >
 > > > > > > Sorry for late handling. I wanted to solve Milan Obuch's issue 
 > > first
 > > > > > > before committing vr(4). But it seems that it's not easy to fix
 > > > > > > Milan's issue. :-(
 > > > > > >
 > > > > > 
 > > > > > Well, I see some progress there... Today I was able to do some 
 > > tests > > again, > and I was able to ping -f another box on the same 
 > > network for > > some time. I > tried then csup sources and I got hard 
 > > hang, again, this > > time with following > lines on console:
 > > > > > 
 > > > > > vr0: PCI bus error -- resetting
 > > > > > vr0: restarting
 > > > > > 
 > > > >
 > > > >Hmm, this is interesting. 6105M datasheet said nothing what can be
 > > > >done for this case. I guess this kind of error can come from
 > > > >improperly seated NICs or broken hardware. Would you re-seat the NIC
 > > > >or change PCI slot and try again with attached patch?
 > > > >
 > > > > > And no ability to enter kdb, either.
 > > > > > Just for record, I am getting following when kldload'ing if_vr:
 > > > > > 
 > > > > > vr0: <VIA VT6105M Rhine III 10/100BaseTX> port 0x9c00-0x9cff mem 
 > > > > > 0xfceff000-0xfceff0ff irq 18 at device 8.0 on pci3
 > > > > > vr0: Quirks: 0x6
 > > > > > vr0: Revision: 0x96
 > > > > > miibus1: <MII bus> on vr0
 > > > > > ukphy0: <Generic IEEE 802.3u media interface> PHY 1 on miibus1
 > > > > > ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
 > > > > > 
 > > > > > (one out of four devices shown)
 > > > > > 
 > > > > > >  > At 07:30 PM 2/27/2008, Pyun YongHyeon wrote:
 > > > > > >  > >I never thought this kind of testing. It's good to hear vr(4)
 > > > > > >  > >recovers from the abrupt link change events. I guess this also
 > > > > > >  > >indicates the overhauled vr(4) can close lots of PR for vr(4).
 > > > > > >  >
 > > > > > >  > BTW, any chance of these fixes being backported to RELENG_7 and
 > > > > > >  > RELENG_6 ? Its not just media speed changes that causes the 
 > > nic to
 > > > > > >
 > > > > > > I'm sure I'll MFC the change to RELENG_7 but not sure it could be
 > > > > > > done on RELENG_6 due to lack of spare time.
 > > > > > >
 > > > > > 
 > > > > > In my eyes, if new vr works for others and no regression was found, 
 > > it > > should > go in. I did not encountered a regression - it did not 
 > > work with > > old driver, > it does not work (yet) with the new... but I 
 > > hope we can > > get this one > working, too...
 > > > > > 
 > > > >
 > > > >Yes, I really like to fix it too.
 > > > >
 > > > 
 > > > Hey.. unfortunately I have to chime in too.. (with a failure)
 > > > Last night I was running a crusty RELENG_6 from about july of last year.
 > > > I had some issues unrelated to this, so I decided to update the system
 > > > to check if that resolved those issues (it did - RELENG_6 as of 
 > > sometime > last night).  However, vr stopped working.  As I remembered 
 > > this thread,
 > > > I booted to my old kernel, and downloaded the rewrite/patchset for 6
 > > > and tried it out.  Unfortunately, It is failing:
 > > > 
 > > > vr0: <VIA VT6102 Rhine II 10/100BaseTX> port 0xe800-0xe8ff mem 
 > > > 0xe3004000-0xe30040ff irq 10 at device 18.0 on pci0
 > > > vr0: Quirks: 0x0
 > > > vr0: Revision: 0x70
 > > > vr0: phy read timeout 31:1
 > > > vr0: MII without any phy!
 > > > device_attach: vr0 attach returned 6
 > > > 
 > > > 
 > > > I'm attaching the complete dmesg, and the version of if_vr.c used.. (a 
 > > > couple of the smaller patches you suggested I hand applied to reduce the
 > > > turnaround time).   Any suggestions would be tested tonight.
 > > > 
 > >
 > >It seems that I've made mistake in implementing memory mapped
 > >register access. Even if datasheet says no special things for
 > >reloading EEPROM, Rhine family seems to default to io register
 > >access after reloading EEPROM. I guess this would be root cause of
 > >Milan Obuch's issue. It seems that his hardware requires memory
 > >mapped register access but reloading EEPROM disabled it.
 > >ATM I have no clean idea how can I renable memory mapped register
 > >access after EEPROM reloading without hacks so I completely backed
 > >out memory mapped register access and put updated vr(4) to the same
 > >URL. Please try again updated vr(4) and let me know how it goes.
 > >
 > 
 > Okay, some success.. (sorry about the delay in testing.. after a 30 hour 
 > day I crashed hard last night)
 > 
 > I downloaded both the if_vr.c and if_vr.c.memio and applied the 
 > if_vr-pyunyh-to-releng6.diff to make it compile on this RELENG_6 box.
 > 
 > if_vr.c:
 > 
 > dmesg.boot:
 > <snip>
 > vr0: <VIA VT6102 Rhine II 10/100BaseTX> port 0xe800-0xe8ff mem 
 > 0xe3004000-0xe30040ff irq 10 at device 18.0 on pci0
 > vr0: Quirks: 0x0
 > vr0: Revision: 0x70
 > miibus0: <MII bus> on vr0
 > ukphy0: <Generic IEEE 802.3u media interface> on miibus0
 > ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
 > vr0: Ethernet address: 00:50:2c:02:1e:e6
 > <snip>
 > 
 > #ifconfig
 > vr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
 >         options=8<VLAN_MTU>
 >         inet 192.168.1.69 netmask 0xffffff00 broadcast 192.168.1.255
 >         ether 00:50:2c:02:1e:e6
 >         media: Ethernet autoselect (none)
 > lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
 >         inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
 >         inet6 ::1 prefixlen 128
 >         inet 127.0.0.1 netmask 0xff000000
 > 
 > #ifconfig vr0 media 100baseTX mediaopt full-duplex
 > 
 > vr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
 >         options=8<VLAN_MTU>
 >         inet 192.168.1.69 netmask 0xffffff00 broadcast 192.168.1.255
 >         ether 00:50:2c:02:1e:e6
 >         media: Ethernet 100baseTX <full-duplex>
 >         status: active
 > 
 > went from 'status: no carrier' to 'status: active'

Ah...I think this is regression. Please try attached patch.

Thanks for testing!
 > 
 > not sure why it's not autonegotiating...
 > ---------
 > 
 > if_vr.c.memio   (tried it for a chuckle as it had differences from the 
 > revision I tried the other day).
 > 
 > dmesg.boot:
 > <snip>
 > vr0: <VIA VT6102 Rhine II 10/100BaseTX> port 0xe800-0xe8ff mem 
 > 0xe3004000-0xe300
 > 40ff irq 10 at device 18.0 on pci0
 > vr0: Quirks: 0x0
 > vr0: Revision: 0x70
 > miibus0: <MII bus> on vr0
 > ukphy0: <Generic IEEE 802.3u media interface> on miibus0
 > ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
 > <snip>
 > 
 > better...
 > 
 > #ifconfig
 > vr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
 >         options=8<VLAN_MTU>
 >         inet 192.168.1.69 netmask 0xffffff00 broadcast 192.168.1.255
 >         ether 00:00:00:00:00:00
 >         media: Ethernet autoselect (none)
 > 
 > not sure why the mac address is nulled out..
 > 

This version was broken, your ethernet hardware address is wrong.

 > home# ifconfig vr0 media 100baseTX mediaopt full-duplex
 > home# ifconfig
 > vr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
 >         options=8<VLAN_MTU>
 >         inet 192.168.1.69 netmask 0xffffff00 broadcast 192.168.1.255
 >         ether 00:00:00:00:00:00
 >         media: Ethernet 100baseTX <full-duplex>
 >         status: active
 > lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
 >         inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
 >         inet6 ::1 prefixlen 128
 >         inet 127.0.0.1 netmask 0xff000000
 > 
 > home# ping 192.168.1.1
 > PING 192.168.1.1 (192.168.1.1): 56 data bytes
 > ping: sendto: Host is down
 > 64 bytes from 192.168.1.1: icmp_seq=0 ttl=64 time=15.448 ms
 > 64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=1.039 ms
 > 64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.929 ms
 > 64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=1.018 ms
 > 
 > 
 > 
 > so.. it's working.. tried pinging yahoo.com and that was working too..
 > so the memio version is progressing for my hardware..
 > 

I have to think again what can be done for memory mapped access.
after committing working version.

Thanks for testing.
-- 
Regards,
Pyun YongHyeon

Received on Thu Mar 06 2008 - 00:09:59 UTC

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