NetBSD Problem Report #37910

From root@garbled.net  Tue Jan 29 18:28:07 2008
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Date: Tue, 29 Jan 2008 11:29:41 -0700 (MST)
From: root@garbled.net
Reply-To: root@garbled.net
To: gnats-bugs@gnats.NetBSD.org
Subject: pcn errors on IBM pcn cards
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>Number:         37910
>Category:       kern
>Synopsis:       pcn errors on IBM pcn cards
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jan 29 18:30:00 +0000 2008
>Last-Modified:  Fri Dec 04 18:40:01 +0000 2009
>Originator:     Tim Rightnour
>Release:        NetBSD 4.0_BETA2
>Organization:

>Environment:


System: NetBSD polaris.garbled.net 4.0_BETA2 NetBSD 4.0_BETA2 (GENERIC) #14: Sun Mar 25 01:26:44 MST 2007 root@polaris.garbled.net:/usr/src/obj/i386/sys/arch/i386/compile/GENERIC i386
Architecture: powerpc
Machine: prep
>Description:

This happens on both prep in 4.0, and ofppc with 4.99.51, on two physically
different cards of the same model.

ofppc machine:
pcn0 at pci0 dev 16 function 0: AMD PCnet-PCI Ethernet
pcn0: Am79c971 PCnet-FAST rev 6, Ethernet address 00:04:ac:e4:a1:a5
pcn0: interrupting at irq 18
nsphy0 at pcn0 phy 1: DP83840 10/100 media interface, rev. 1
nsphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
ukphy0 at pcn0 phy 31: Generic IEEE 802.3u media interface
ukphy0: Am79C972 internal 10BASE-T interface (OUI 0x000058, model 0x0001), rev. 1
ukphy0: 10baseT, 10baseT-FDX, auto

prep machine:
pcn0 at pci1 dev 2 function 0: AMD PCnet-PCI Ethernet
pcn0: Am79c971 PCnet-FAST rev 5, Ethernet address 00:60:94:9d:cd:e2
pcn0: interrupting at irq 26
nsphy0 at pcn0 phy 1: DP83840 10/100 media interface, rev. 1
nsphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
ukphy0 at pcn0 phy 31: Generic IEEE 802.3u media interface
ukphy0: OUI 0x000058, model 0x0001, rev. 1
ukphy0: 10baseT, 10baseT-FDX, auto

pcn0: CRC error
pcn0: CRC error
pcn0: framing error
pcn0: CRC error
pcn0: CRC error

During any amount of network traffic, my console gets flooded with the above
errors.


>How-To-Repeat:
Use pcn0 with an IBM pcn card.

>Fix:
No clue.


>Audit-Trail:
From: David Laight <david@l8s.co.uk>
To: gnats-bugs@gnats.netbsd.org
Cc: 
Subject: RE: PR/37910 pcn errors on IBM pcn cards
Date: Fri, 4 Dec 2009 18:37:18 +0000

 I'd guess at a hdx/fdx mismatch somewhere.
 And a device driver that is being overly verbose!

 From memory of the 79c970/1 the mac unit needs to be told whether
 the phy has negotiated hxd or fdx (but not 10/100M).
 The definition of the phy registers makes this ~impossible :-)

 	David

 -- 
 David Laight: david@l8s.co.uk

>Unformatted:

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