Am Mittwoch, 27. April 2011, 13:56:10 schrieb Willy Lambert: > 2011/4/27 Willy Lambert > <[email protected]<mailto:[email protected]>> > Hi all,
Hi, you did not mention that you have checked the IRQ jumpers on the PC104 board, but I'm sure you did. When you say > _ one PC104 CAN board with configured jumpers. I assume you are using this board first on the "old CPU board" next on the new CPU board without changing the jumpers. In this case, no idea. Heinz > some time ago I had hard job turning my CPU+Can PC104 stack into a working > state. Main problem was that I was beginning from nothing (doubts on BIOS, > OS, hardware, wires, ...). For some day, I am trying to reinstall all this > stuff on another brand new stack, BUT, I have a proper working hardware to > isolate problems ! > > I made documents last time to remind me all needed actions but it seems that > I forgot something and I don't know where to look at and scratching my head :p > > Here is the symptoms : > > I have : > _ one set of can-wires, with resistors and a working second node (a CAN > controller motor board) > _ one PC104 CAN board with configured jumpers. > _ 2 CPU with "should be identical BIOS settings" (checked by hand for some > interesting sections), one is the old working one, the second is a brand new > installation from 0 > > If I connect all this and the old CPU board everything working (the motor > runs). If I change to the CPU board nothing works and the interrupts don't > increase in /proc/interrupts. Last time this happened, it was about BIOS > settings. But I am pretty sure it is not coming from BIOS (I am going to > recheck). > > I confirm that BIOS settings are exactly equal (only the temperature and > voltage values differs) > > > > May this non increasing interrupts came from something else ? OS (linux > 2.6.35.7) config ? > > My loading script is this : > modprobe sja1000_isa irq=11,11 mem=0xD0000,0xD0200 ocr=0x5e,0x5e cdr=0,0 > ip link set can0 type can bitrate 250000 restart-ms 1000 > ip link set can1 type can bitrate 250000 restart-ms 1000 > ifconfig can0 up > ifconfig can1 up > > > > Here is an extract of my dmesg : > [ 0.780221] vcan: Virtual CAN interface driver > .... > [ 0.799991] can: controller area network core (rev 20090105 abi 8) > ... > [ 0.800051] can: raw protocol (rev 20090105) > .... > [ 0.800055] can: broadcast manager protocol (rev 20090105 t) > .... > [ 9.117593] sja1000_isa sja1000_isa.0: sja1000_isa device registered > (reg_base=0xc00d0000, irq=11) > [ 9.117751] sja1000_isa sja1000_isa.1: sja1000_isa device registered > (reg_base=0xc00d0200, irq=11) > [ 9.117931] Legacy sja1000_isa driver for max. 8 devices registered > [ 9.128343] sja1000_isa sja1000_isa.0: setting BTR0=0x01 BTR1=0x1c > [ 9.129964] sja1000_isa sja1000_isa.1: setting BTR0=0x01 BTR1=0x1c > > lsmod says : > Module Size Used by > sja1000_isa 2439 - > (because items are not compiled as modules) > > > root@beta:~# cat /proc/interrupts > CPU0 > 0: 3013125 IO-APIC-edge timer > 1: 4 IO-APIC-edge i8042 > 8: 81 IO-APIC-edge rtc0 > 9: 0 IO-APIC-fasteoi acpi > 11: 0 IO-APIC-edge can0, can1 > 12: 7 IO-APIC-edge i8042 > 14: 0 IO-APIC-edge ata_piix > 15: 2327 IO-APIC-edge ata_piix > 19: 0 IO-APIC-fasteoi uhci_hcd:usb3 > 23: 0 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb2 > 40: 2859 PCI-MSI-edge eth0 > NMI: 0 Non-maskable interrupts > LOC: 4496 Local timer interrupts > SPU: 0 Spurious interrupts > PMI: 0 Performance monitoring interrupts > PND: 0 Performance pending work > TRM: 0 Thermal event interrupts > THR: 0 Threshold APIC interrupts > MCE: 0 Machine check exceptions > MCP: 11 Machine check polls > ERR: 0 > MIS: 0 > > > root@beta:~# cat /proc/iomem > 00000000-00000fff : reserved > 00001000-0009fbff : System RAM > 0009fc00-0009ffff : reserved > 000a0000-000bffff : PCI Bus 0000:00 > 000a0000-000bffff : Video RAM area > 000c0000-000c7fff : Video ROM > 000d0000-000dffff : PCI Bus 0000:00 > 000d0000-000d001f : sja1000_isa > 000d0200-000d021f : sja1000_isa > 000e0000-000fffff : reserved > 000f0000-000fffff : System ROM > ....... > > > The BIOS has the Boot up from lan desactivated (it takes the ISA memory), and > the PnP section with a reserved Irq 11 > > > This may also help to debug : > > root@beta:~# ip -d -s link show can0 > 3: can0: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UNKNOWN qlen > 10 > link/can > can state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 1000 > bitrate 250000 sample-point 0.875 > tq 250 prop-seg 6 phase-seg1 7 phase-seg2 2 sjw 1 > sja1000: tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..64 brp-inc 1 > clock 8000000 > re-started bus-errors arbit-lost error-warn error-pass bus-off > 0 0 0 0 0 0 > RX: bytes packets errors dropped overrun mcast > 0 0 0 0 0 0 > TX: bytes packets errors dropped carrier collsns > 0 0 0 0 0 0 > root@beta:~# ip -d -s link show can1 > 4: can1: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UNKNOWN qlen > 10 > link/can > can state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 1000 > bitrate 250000 sample-point 0.875 > tq 250 prop-seg 6 phase-seg1 7 phase-seg2 2 sjw 1 > sja1000: tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..64 brp-inc 1 > clock 8000000 > re-started bus-errors arbit-lost error-warn error-pass bus-off > 0 0 0 0 0 0 > RX: bytes packets errors dropped overrun mcast > 0 0 0 0 0 0 > TX: bytes packets errors dropped carrier collsns > 0 0 0 0 0 0 > root@beta:~# > > > -- with best regards / mit freundlichen Grüßen Heinz-Jürgen Oertel port - Professionals in Industrial Communication +=========================================================== | port GmbH phone +49 345 77755-0 | D-06132 Halle/Saale mailto:[email protected] | Germany http://www.port.de | CAN Wiki http://www.CAN-Wiki.info/ | Newsletter: http://www.port.de/subscribe +=========================================================== port Gesellschaft für computergestützte Automation mbH Geschäftsführer: Christian Bornschein, Marcus Tangermann Sitz der Gesellschaft: Halle/Saale Registergericht Sachsen-Anhalt Stendal HRB 212667
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