On 11/02/13 19:52, Mugunthan V N wrote:
This patch series implements Dual EMAC mode implementation of CPSW
which acts as two standalone EMAC by segregating the switch using VIDs
and port VLAN
Mugunthan V N (3):
driver: net: ethernet: davinci_cpdma: add support for directed packet
and source port detection
driver: net: ethernet: cpsw: make cpts as pointer
driver: net: ethernet: cpsw: dual emac interface implementation
Documentation/devicetree/bindings/net/cpsw.txt | 2 +
drivers/net/ethernet/ti/cpsw.c | 387 +++++++++++++++++++-----
drivers/net/ethernet/ti/davinci_cpdma.c | 17 +-
drivers/net/ethernet/ti/davinci_cpdma.h | 4 +-
drivers/net/ethernet/ti/davinci_emac.c | 6 +-
include/linux/platform_data/cpsw.h | 3 +
6 files changed, 338 insertions(+), 81 deletions(-)
I'm trying to get dual emac mode working, but I'm only having partial
success. We have a custom AM335x board with dual LAN8710 PYHs, but the
basic design is based on the BeagleBone board.
I have the following in my .dts file:-
mac: ethernet@4a100000 {
dual_emac = <1>;
cpsw_emac0: slave@4a100200 {
dual_emac_res_vlan = <1>;
};
cpsw_emac1: slave@4a100300 {
dual_emac_res_vlan = <2>;
};
};
When I boot my board (across nfs via eth1):-
(a) the kernel is loaded (via tftp under U-Boot)
(b) the kernel mounts the nfsroot
(c) my init scripts are run (e.g. dropbear)
(d) the shell prompt appears
So far so good, but when I then try any shell command (e.g. "ps") the
nfs link just hangs.
Below is an extract from the boot messages:-
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 3.9.0-rc6-00186-g5b55d70-dirty
(mpfj@mpfj-nanobone) (gcc version 4.7.2 (Buildroot
2013.02-00154-g851ceaa) ) #19 Sun Apr 14 19:50:21 BST 2013
[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7),
cr=10c53c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing
instruction cache
[ 0.000000] Machine: Generic AM33XX (Flattened Device Tree), model:
Newflow AM335x NanoBone
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] CPU: All CPU(s) started in SVC mode.
[ 0.000000] AM335X ES1.0 (neon )
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on.
Total pages: 64768
[ 0.000000] Kernel command line: root=/dev/nfs
nfsroot=10.1.0.111:/tftpboot/nanobone/rootfs rw
ip=10.1.0.199:10.1.0.111:10.1.0.1:255.255.0.0::eth1:off console=ttyO0,115200
...
[ 1.424977] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6
[ 1.431443] davinci_mdio 4a101000.mdio: detected phy mask fffffffc
[ 1.440939] libphy: 4a101000.mdio: probed
[ 1.445266] davinci_mdio 4a101000.mdio: phy[0]: device
4a101000.mdio:00, driver SMSC LAN8710/LAN8720
[ 1.454962] davinci_mdio 4a101000.mdio: phy[1]: device
4a101000.mdio:01, driver SMSC LAN8710/LAN8720
[ 1.465059] Random MACID = a2:3f:fb:2c:47:d9
[ 1.472276] cpsw: Random MACID = ae:d5:c0:c0:27:03
[ 1.480588] rtc-ds1307 0-0068: setting system clock to 2013-04-14
19:59:52 UTC (1365969592)
[ 1.491543] net eth1: initializing cpsw version 1.12 (0)
[ 1.516965] net eth1: phy found : id is : 0x7c0f1
[ 4.595479] libphy: 4a101000.mdio:01 - Link is Up - 100/Full
[ 4.625872] IP-Config: Complete:
[ 4.629307] device=eth1, hwaddr=ae:d5:c0:c0:27:03,
ipaddr=10.1.0.199, mask=255.255.0.0, gw=10.1.0.1
[ 4.639365] host=10.1.0.199, domain=, nis-domain=(none)
[ 4.645359] bootserver=10.1.0.111, rootserver=10.1.0.111, rootpath=
[ 4.674219] VFS: Mounted root (nfs filesystem) on device 0:12.
[ 4.682438] devtmpfs: mounted
[ 4.686042] Freeing init memory: 196K
Starting logging: OK
Initializing random number generator... done.
Starting network...
ip: RTNETLINK answers: File exists
[ 5.340677] net eth0: initializing cpsw version 1.12 (0)
[ 5.366463] net eth0: phy found : id is : 0x7c0f1
ip: RTNETLINK answers: File exists
ip: RTNETLINK answers: File exists
ip: RTNETLINK answers: File exists
Starting dropbear sshd: OK
Welcome to Buildroot
nanobone login: root
Password:
# ps
[ 18.845266] nfs: server 10.1.0.111 not responding, still trying
At this point, I can disconnect my network cable from eth1 and connect
to eth0, and back again which shows the PYHs appear to be detecting the
link up/down status of each port.
[ 562.675229] libphy: 4a101000.mdio:01 - Link is Down
[ 567.885586] libphy: 4a101000.mdio:00 - Link is Up - 100/Full
[ 571.965156] libphy: 4a101000.mdio:00 - Link is Down
[ 575.014943] nfs: server 10.1.0.111 not responding, still trying
[ 576.635412] libphy: 4a101000.mdio:01 - Link is Up - 100/Full
[ 579.426051] nfs: server 10.1.0.111 OK
Notice that at the end, the nfs link appears to come back "ok", but the
"ps" command never completes.
Any ideas of what's going on ?
Cheers
Mark J.
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
