On Wed, Jul 03, 2024 at 03:02:52PM +0200, Landry Breuil wrote: > Le Tue, Jul 02, 2024 at 07:50:56PM +0000, Miod Vallat a écrit : > > > hi, > > > > > > playing with 7.5 on an edgerouter poe, it panics at boot: > > > > Congratulations, you've reached a divide by zero in the kernel. > > > > This is caused by cn30xxgmx_rgmii_speed() setting the local variable > > `baudrate' to zero (with an XXX comment) prior to dividing by it. > > > > The following diff sweeps the issue under the rug by following the > > "consider unknown value as 1Gbps" logic used all over the file. It might > > help your setup. > > it's right in the sense that it doesn't panic anymore and i can > up/configure the interface: > > erpoe# ifconfig cnmac2 media > cnmac2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > lladdr 80:2a:a8:8e:2d:51 > index 3 priority 0 llprio 3 > media: Ethernet manual (none) > supported media: > media manual > inet 10.0.2.2 netmask 0xffffff00 broadcast 10.0.2.255 > > but it shows no media type, doesn't work and no packets flow. > > digging in the archives, i found > https://marc.info/?l=openbsd-bugs&m=151063517020444&w=2 which seems to > say that it'd be better to apparently skip that port (and that there's > no hope for the two remaining ports ?) > > visa, any hindsight on this ?
Not really. > trying the following diff adapted from the 2017 thread: > > Index: arch/octeon/dev/cn30xxsmi.c > =================================================================== > RCS file: /cvs/src/sys/arch/octeon/dev/cn30xxsmi.c,v > diff -u -r1.12 cn30xxsmi.c > --- arch/octeon/dev/cn30xxsmi.c 20 May 2024 23:13:33 -0000 1.12 > +++ arch/octeon/dev/cn30xxsmi.c 3 Jul 2024 12:54:48 -0000 > @@ -197,6 +197,10 @@ > reg = nutm25_phys[port]; > break; > case BOARD_UBIQUITI_E100: > + /* XXX Skip the switch port on ERPoe-5. > + * XXX There is no driver for it. */ > + if (port > 1) > + return ENOENT; The condition should be (port > 1 && octeon_boot_info->board_rev_major == 1). Otherwise the code skips a working port on the EdgeRouter Lite. The Lite uses the same board id but has board_rev_major == 2 as far as I know. > case BOARD_UBIQUITI_E120: > if (port > 2) > return ENOENT; > > dmesg goes from > mainbus0 at root: board 20002 rev 1.27, model CN3xxx/CN5xxx > ... > octgmx0 at octpip0 interface 0 > cnmac0 at octgmx0: port 0 RGMII, address 80:2a:a8:8e:2d:4f > atphy0 at cnmac0 phy 7: AR8035 10/100/1000 PHY, rev. 2 > cnmac1 at octgmx0: port 1 RGMII, address 80:2a:a8:8e:2d:50 > atphy1 at cnmac1 phy 6: AR8035 10/100/1000 PHY, rev. 2 > cnmac2 at octgmx0: port 2 RGMII, address 80:2a:a8:8e:2d:51 > com0 at simplebus0: ns16550a, 64 byte fifo > > to now only two supported ports: > octgmx0 at octpip0 interface 0 > cnmac0 at octgmx0: port 0 RGMII, address 80:2a:a8:8e:2d:4f > atphy0 at cnmac0 phy 7: AR8035 10/100/1000 PHY, rev. 2 > cnmac1 at octgmx0: port 1 RGMII, address 80:2a:a8:8e:2d:50 > atphy1 at cnmac1 phy 6: AR8035 10/100/1000 PHY, rev. 2 > com0 at simplebus0: ns16550a, 64 byte fifo > > at least the edgerouter lite 3 physical ports are supported.. its' a > pity having only 2 working ports on 5 physical... > > Landry >
