Sebastian Kuzminsky wrote: >On Tue July 1 2008 14:03:35 Jeff Epler wrote: > > >>> 3. It would be nice if users couldn't accidentally re-program their >>> FPGAs in mid-run, ie if firmware loading happened at the sole >>> discretion of the driver rather than having multiple pieces of >>> code twiddling the boards. >>> >>> >>If bfload can determine whether the device's pci regions are in use, it >>could avoid programming while another hardware driver is using the >>device. Is this possible with any of the pci interface libraries you're >>looking at? >> >> > >Good idea! > >It's not a feature of the pci libraries, but you can check if >/sys/devices/pci*/$(DOMAIN):$(BUS):$(DEVICE).$(FUNCTION)/driver exists, >indicating that a kernel driver has claimed the PCI device. > >For EPP, not so much... > I'd think that a scan of /proc/ioports correlated with detected (or command-line-supplied) card addresses would tell you which cards are in use. This should also work for the parallel port, if the driver correctly uses io_request_region().
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