FAQ: [#5945] Gadget ethernet fails to work in dma mode when anomaly 456 is disabled on bf526-ezbrd(2010)

[#5945] Gadget ethernet fails to work in dma mode when anomaly 456 is disabled on bf526-ezbrd

Submitted By: Vivi Li

Open Date

2010-03-05 04:56:53

Priority:

Medium Assignee:

Bob Liu

Status:

Open Fixed In Release:

N/A

Found In Release:

2010R1 Release:

Category:

Drivers Board:

N/A

Processor:

BF526 Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Duplicate

Uboot version or rev.:

Toolchain version or rev.:

gcc4.3-2010_Jan_22

App binary format:

N/A

Summary: Gadget ethernet fails to work in dma mode when anomaly 456 is disabled on bf526-ezbrd

Details:

Gadget ethernet fails to work in dma mode when anomaly 456 is disabled on bf526-ezbrd.

On target:

modprobe g_ether host_addr=00:dc:c8:f7:75:05 dev_addr=00:dd:dc:eb:6d:f1^M

usb0: MAC 00:dd:dc:eb:6d:f1^M

usb0: HOST MAC 00:dc:c8:f7:75:05^M

g_ether gadget: Ethernet Gadget, version: Memorial Day 2008^M

g_ether gadget: g_ether ready^M

root:/> g_ether gadget: high speed config #1: CDC Ethernet (ECM)^M

lsmod^M

Module Size Used by^M

g_ether 17308 0 ^M

root:/> ifconfig usb0 192.168.1.66 up

root:/> ifconfig usb0^M

usb0 Link encap:Ethernet HWaddr 00:DD:DC:EB:6D:F1 ^M

inet addr:192.168.1.66 Bcast:192.168.1.255 Mask:255.255.255.0^M

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1^M

RX packets:0 errors:0 dropped:0 overruns:0 frame:0^M

TX packets:0 errors:0 dropped:0 overruns:0 carrier:0^M

collisions:0 txqueuelen:1000 ^M

RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)^M

root:/>

On host:

uclinux63-527-usbdev:/root # ifconfig eth2 192.168.1.56

uclinux63-527-usbdev:/root # ping -f -l50 -c 1000 192.168.1.66

PING 192.168.1.66 (192.168.1.66) 56(84) bytes of data.

...........................................................................................................................................................................................................................................................................................................^HE^HE^HE^HE............................................................................................................................................................................................................................................................................................................^HE^HE^HE............................................................................................................................................................................................................................................................................................................^HE^HE^HE.....................................................................................................^HE^HE^HE^M

--- 192.168.1.66 ping statistics ---

1000 packets transmitted, 0 received, +13 errors, 100% packet loss, time 9622ms^M

, pipe 52, ipg/ewma 9.631/0.000 ms

uclinux63-527-usbdev:/root #

uclinux63-527-usbdev:/root # ping -c 1 -s 1024 192.168.1.66

PING 192.168.1.66 (192.168.1.66) 1024(1052) bytes of data.

From 192.168.1.56: icmp_seq=1 Destination Host Unreachable

--- 192.168.1.66 ping statistics ---

1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

uclinux63-527-usbdev:/root #

Follow-ups

--- Sonic Zhang 2010-08-24 00:11:31

No hardware fix in bf526 v0.2 for anomaly 456 is reported to

processor.support@analog.com.

Duplicate of 5944.

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