On Wed, Jan 13, 2021 at 09:54:07AM +0800, Xu Yilun wrote: > This patch supports the DFL drivers be written in userspace. This is > realized by exposing the userspace I/O device interfaces. > > The driver leverages the uio_pdrv_genirq, it adds the uio_pdrv_genirq > platform device with the DFL device's resources, and let the generic UIO > platform device driver provide support to userspace access to kernel > interrupts and memory locations.
Why doesn't the existing uio driver work for this, why do you need a new one? > --- > drivers/fpga/Kconfig | 10 +++++ > drivers/fpga/Makefile | 1 + > drivers/fpga/dfl-uio-pdev.c | 93 > +++++++++++++++++++++++++++++++++++++++++++++ uio drivers traditionally go in drivers/uio/ and start with "uio", so shouldn't this be drivers/uio/uio_dfl_pdev.c to match the same naming scheme? But again, you need to explain in detail, why the existing uio driver doesn't work properly, or why you can't just add a few lines to an existing one. thanks, greg k-h
