fec problem on mpc8xx

Hi,

I am porting linux 2.6 on a custom MPC8xx processor based board that uses FEC with LXT971 on the MII bus.

I am not able to bring up the eth0 interface. I have tried using both the drivers:

1. Generic FEC driver (FEC_ENET under arch/ppc/8xx_io/fec.c)
2. Freescale FEC driver (FS_ENET under drivers/net/fs_enet/fs_enet-main.c)

I have posted the kernel log and ifconfig outputs of both below:

1. Generic FEC driver (FEC_ENET under arch/ppc/8xx_io/fec.c

# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:A0:B0:C0:D0:E0 inet addr:192.168.188.90 Bcast:192.168.188.255 Mask:255.255.255.0 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Base address:0xe00

# ifconfig eth0 up SIOCSIFFLAGS: No such device

1. Freescale FEC driver (FS_ENET under drivers/net/fs_enet/fs_enet-main.c)

# ifconfig eth0 ifconfig: eth0: error fetching interface information: Device not found

Could you please let me know:

1. Which driver tree is to be used (fs_net or fec_enet)
2. Is there any board specific initialization required for FEC?
3. Anything that is missed out based on the logs (below)?
4. Seems like the eth0 device is not getting created. Any pointers?

Thanks for your help.

Regards, AP

Boot up Log FEC_ENET

-------------------------------- Kernel command line: ramdisk_size=6144 root=/dev/ram0 init=/linuxrc rw . . NET: Registered protocol family 16 Generic PHY: Registered new driver SCSI subsystem initialized NET: Registered protocol family 2 IP route cache hash table entries: 128 (order: -3, 512 bytes) TCP established hash table entries: 512 (order: -1, 2048 bytes) TCP bind hash table entries: 256 (order: -2, 1024 bytes) TCP: Hash tables configured (established 512 bind 256) TCP reno registered audit: initializing netlink socket (disabled) audit(1277.128:1): initialized . . .

RAMDISK driver initialized: 1 RAM disks of 6144K size 1024 blocksize loop: loaded (max 8 devices) nbd: registered device at major 43 LXT970: Registered new driver LXT971: Registered new driver Fixed PHY: Registered new driver eth0: FEC ENET Version 0.2, FEC irq 6, MII irq 4, addr

00:A0:B0:C0:D0:E0 TCP bic registered TCP cubic registered TCP westwood registered TCP htcp registered NET: Registered protocol family 1 NET: Registered protocol family 17 drivers/rtc/hctosys.c: unable to open rtc device (rtc0) . . . #

BOOT LOG : Freescale FEC driver (FS_ENET under drivers/net/fs_enet/fs_enet-main.c)

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# ifconfig eth0 ifconfig: eth0: error fetching interface information: Device not found

Boot up Log - FS_ENET

Kernel command line: ramdisk_size=6144 root=/dev/ram0 init=/linuxrc rw console=ttyCPM0,115200 . . . NET: Registered protocol family 16 Generic PHY: Registered new driver NET: Registered protocol family 2 IP route cache hash table entries: 128 (order: -3, 512 bytes) TCP established hash table entries: 512 (order: -1, 2048 bytes) TCP bind hash table entries: 256 (order: -2, 1024 bytes) TCP: Hash tables configured (established 512 bind 256) TCP reno registered audit: initializing netlink socket (disabled) audit(7370.992:1): initialized . . . RAMDISK driver initialized: 1 RAM disks of 6144K size 1024 blocksize loop: loaded (max 8 devices) LXT970: Registered new driver LXT971: Registered new driver fs_enet.c:v1.0 (Aug 8, 2005) TCP bic registered Initializing IPsec netlink socket NET: Registered protocol family 1 NET: Registered protocol family 17 NET: Registered protocol family 15 . . .

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