RE: mpc8270 & Intel 82551ER on 2.6.17.14

Thanks for the reply.

I believe that the EEPROM is programmed correctly.  At lease the driver
seems to think so.  I am still leaning towards the interrupts not being
properly initialized on the PCI bus.  I am currently trying to track
this down. =20


Here's the output of what I have for one of the Ethernet controllers.

# cat /proc/interrupts
           CPU0      =20
 20:          0   CPM2 SIU  Level     eth0
 24:          0   CPM2 SIU  Level     PQ2 PCI cascade
 40:        154   CPM2 SIU  Level     cpm_uart
BAD:          0
# lspci -vvv
00:12.0 Ethernet controller: Intel Corporation 8255xER/82551IT Fast
Ethernet Controller (rev 10)
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=3Dmedium =

TAbort-

<TAbort- <MAbort- >SERR- <PERR-
        Latency: 128 (2000ns min, 14000ns max), Cache Line Size 08
        Interrupt: pin A routed to IRQ 20
        Region 0: Memory at 00000000affff000 (32-bit, non-prefetchable)
[size=3D4K]
        Region 1: I/O ports at 1ffffc0 [size=3D64]
        Region 2: Memory at 00000000affc0000 (32-bit, non-prefetchable)
[size=3D128K]
        Capabilities: [dc] Power Management version 2
                Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=3D0mA
PME(D0+,D1+,D2+,D3hot+,D3cold-)
                Status: D0 PME-Enable- DSel=3D0 DScale=3D2 PME-

 ethtool -e eth0
Offset          Values
------          ------
0x0000          00 50 c2 70 7a 01 80 a1 ff ff 01 02 01 47 ff ff=20
0x0010          ff ff ff ff a0 d0 00 00 00 00 ff ff ff ff ff ff=20
0x0020          ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff=20
0x0030          ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff=20
0x0040          ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff=20
0x0050          ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff=20
0x0060          ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff=20
0x0070          ff ff ff ff ff ff ff ff ff ff ff ff ff ff 92 3d=20



Thanks again,
-Nick


-----Original Message-----
From: Muruga Ganapathy [mailto:gmuruga@gdatech.com]=20
Sent: Friday, June 29, 2007 12:48 PM
To: Pradyumna Sampath; Nicholas Hickman; linuxppc-embedded@ozlabs.org
Subject: Re: mpc8270 & Intel 82551ER on 2.6.17.14



1. You may want to check whether the device is configured properly by
   enabling the debug statements or using the lspci command. I mean the=20
   BAR registers.

2. Also check whether correct the interrupt is assigned to the=20
   device using cat /proc/interrupts command under linux.=20

3. As far as the EEPROM is concerned, you need to enable debug to check=20
   whether there is any check sum error. If there is a check sum error=20
   in EEPROM, the device may not come up too. As you are using it in=20
   powerpc platform, you need to take care of the endianess while=20
   writing to the EEPROM.

Hope this helps!

Thanks
G.Muruganandam

Hi Nicholas,
=20
On 6/29/07, Nicholas Hickman [off-list ref] wrote:

quoted

I am having trouble getting two 82551ER Ethernet controllers

running in

quoted

Linux.  I am able to scan the PCI bus and see the devices and I was

even

quoted

able to program the EEPROM from U-boot.

In the kernel I mapped the IRQ's through /arch/ppc/m82xx_pci.c. =20

I've been

quoted

using the e100 drive that comes with the 2.6.17.14 kernel and have

also

quoted

tried the driver directly from Intel.  Both give the same results. =20

The PCI

quoted

scan shows the correct output for how the device should be

configured.

<snip..>
=20
I have the same, exact same problem. But there are some of the=20
differences with the setup though. I have an MPC5200B and the other=20
difference is that I have a 2.6.21-rt3. However its the same ethernet=20
controller.
=20
I am trying out a few things here, some of them being complete=20
guesses. But if I hit something, I will let this list know. Anyone=20
else had similar issues ? Request you to please holler.
=20
regards
prady
--
htp://prady.livejournal.com
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