From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Jackson Subject: Re: [PATCH 0/3] Dual EMAC mode implementation of CPSW Date: Sun, 14 Apr 2013 20:16:40 +0100 Message-ID: <516B0098.4040809@mimc.co.uk> References: <1360612340-9266-1-git-send-email-mugunthanvnm@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, davem@davemloft.net, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org To: Mugunthan V N Return-path: In-Reply-To: <1360612340-9266-1-git-send-email-mugunthanvnm@ti.com> Sender: linux-omap-owner@vger.kernel.org List-Id: netdev.vger.kernel.org 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. From mboxrd@z Thu Jan 1 00:00:00 1970 From: mpfj-list@mimc.co.uk (Mark Jackson) Date: Sun, 14 Apr 2013 20:16:40 +0100 Subject: [PATCH 0/3] Dual EMAC mode implementation of CPSW In-Reply-To: <1360612340-9266-1-git-send-email-mugunthanvnm@ti.com> References: <1360612340-9266-1-git-send-email-mugunthanvnm@ti.com> Message-ID: <516B0098.4040809@mimc.co.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 at 4a100000 { dual_emac = <1>; cpsw_emac0: slave at 4a100200 { dual_emac_res_vlan = <1>; }; cpsw_emac1: slave at 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 at 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.