Hi all.
I'm trying to implement support for the CAN PCMCIA Peak card with
Xenomai in official Peak driver.
First, I would like to know if someone already got success in writing
some Xenomai IRQ handler for some PCMCIA devices. Is that a nonsense ? I
believe I'm missing something in the way PCMCIA socket controller
handles interrupts, linux side.
I can observe on my laptop that PCMCIA socket controller IRQ and card
IRQ do not conflict :
----------------------
cat /proc/interrupts
CPU0
0: 163304 IO-APIC-edge timer, rthal_broadcast_timer
1: 178 IO-APIC-edge i8042
8: 2 IO-APIC-edge rtc
9: 72 IO-APIC-fasteoi acpi
12: 124 IO-APIC-edge i8042
14: 13347 IO-APIC-edge ide0
17: 36411 IO-APIC-fasteoi uhci_hcd:usb5, HDA Intel, eth0
18: 1 IO-APIC-fasteoi uhci_hcd:usb4, yenta
19: 0 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb2
20: 0 IO-APIC-fasteoi uhci_hcd:usb3
[...]
----------------------
cat /proc/pcan
*------------ PEAK-Systems CAN interfaces (www.peak-system.com)
-------------
*-------------------------- Release_20070306_n
----------------------------
*------------------- [mod] [isa] [pci] [dng] [pcc] [rt]
---------------------
*--------------------- 2 interfaces @ major 000 found
-----------------------
*n -type- ndev --base-- irq --btr- --read-- --write- --irqs-- -errors-
status
40 pccard -NA- 00002100 003 0x001c 00000000 00000000 00000000 00000000
0x0000
41 pccard -NA- 00002120 003 0x001c 00000000 00000000 00000000 00000000
0x0000
----------------------
In other worlds, PCMCIA subsystem claims that device IRQ is #3.
When registering interrupt, I get this message :
Xenomai: xnintr_irq_handler: IRQ0 not handled. Disabling IRQ line.
Handler looses more than 90% of #3 IRQ's.
Any experience about PCMCIA/Xenomai would be welcome.
Regards
Edouard.
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