Hi Laura, On Tue, Mar 22, 2016 at 3:51 PM, Laura Abbott <labbott@xxxxxxxxxx> wrote: > In the past what drivers have done is a foo_ion_client_create which has the > reference > to the ion_device created from ion_device_create. Drivers then call the > foo_ion_client_create function. Oh, so you mean you add a function to create a client to the platform device implementing the heap and the export this function? heap implements: foo_create_client(); driver calls: foo_create_client() ? > Can you elaborate more on your sharing and allocation flow? This might > suggest > another idea. Well I'll have a bunch of DMA streams to / from an FPGA that contains DMA engines & accelerators. To that end my userland software would allocate say 64 buffers, hand them over to driver A to queue/deque them. In future I might want to share these buffers between streams and with other peripherals on the same bus, which is why I looked at ION. Thanks, Moritz _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel