2011/8/14 Willy Lambert <lambert.wi...@gmail.com> > Hi all, > > I was using sja1000_isa module on a PC 104 CPU+CAN stack under a normal > linux. For some reasons I would like to use xenomai instead of linux, so I > tried to switch from sja1000_isa to xeno_can_isa to have the equivalent rtdm > driver. > > The command line I used before was : > modprobe sja1000_isa irq=10,10 mem=0xD0000,0xD0200 ocr=0x5e,0x5e cdr=0,0 > So I was accessing it via iomem. > > I had a quick look at xeno_can_isa, but it only support ioport access. I > think my board doesn't support this ( > http://www.ixxat.com/pc_i_04_104_en.html for details), but I must admit > this mem vs port access are not very clear to me. > > Does this mean that I have no chance to find a rt driver for my isa board ? > If so, Is it conceivable to extend the current driver ? (knowing that I am > really not at ease with this low level developement) > Do I a trick to use port instead of mem for my hardware ? > > > >From "Wolfgang Grandegger" <w...@grandegger.com> in private (my fault, I contacted him in private first) :
I'm still puzzled what you intend to do. If you want to use RT-Socket-CAN for your hardware (using mem= with Linux), then you should use the driver xeno_can_mem with the same parameters: insmod xeno_can_mem.ko irq=10,10 mem=0xD0000,0xD0200 ocr=0x5e,0x5e The xeno_can_isa.ko is only for I/O port accesses. Yes, that's it ! I'll try this. It's just that I could not find my way in the middle of all xeno drivers and choosed isa because it's an ISA bus.
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