Hi all -
I've been racking my brains over this one, and I'll have to give in and beg for help.
I have a PCI device. Sysfs happily shows it, along with the resources derived from the BARS. I'd like to mmap the resource0 file that is offered up so that I can access the memory from userspace. Googling around suggests that this functionality is available without having a driver loaded (assuming I've understood that correctly). Only problem is, that whilst a copy of devmem2 modified to use resource0 rather than /dev/mem for the mmap appears to work, it doesn't result in any PCI activity.
Rubini doesn't quite cover this scenario - or if it does, I'm not reading the right pages.
Help?
TIA,
Peter
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