> On 07 Jul 2015, at 15:51, Alessio Igor Bogani <alessioigorbogani@xxxxxxxxx> wrote: > <snip> >> Current VME stack links windows not to the boards, but to device drivers. >> Driver >> could potentially minimise window usage within it’s scope (any sort of >> window >> reusing, like mapping whole A16 once to be used with all boards), but this >> won’t >> work across multiple drivers. Even if all of your drivers are window-wise >> economic, >> they will still need some amount of windows per each driver. Not that we >> have that >> many kernel drivers... > > Yes you can share a window/image between all boards of the same type > (in effect we are porting our drivers in this way) *but* it isn't the > expected way to work (see Documentation/vme_api.txt struct > vme_driver's probe() and match() functions and the GE PIO2 VME > driver). And vme_pio2 can’t handle more than 8 boards. This shows that the current design needs some adjustments. Also would be great if probe() and match() allowed for void *private data field. Cheers, Dmitry _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
