do start_read/stop_read and start_write/stop_write map directly to the
userland read(2) and write(2) calls?
i had looked at this previously, and am a bit confused on if the above
is correct.
even if they are the direct interface to read(2)/write(2), the issue of
a poll method for select(2) still exists...
grepping all DRIVER_MODULE usages comes up with only two poll methods:
powerpc/powermac/pmu.c: DEVMETHOD(adb_hb_controller_poll,
pmu_poll),
powerpc/powermac/cuda.c: DEVMETHOD(adb_hb_controller_poll,
cuda_poll),
and those are unhelpful.
usb_fifo_methods doesn't seem to have a poll, how would i go about
this? select(2) is a more familiar interface for application
programmers to use for this purpose, instead of using an ioctl for the
same functionality in a way that is not compatible with select(2).
please excuse me if these are newbie questions, but, i'm still in the
learning process.
i can do this if there is a way to prevent DRIVER_MODULE from creating
the devfs nodes, and instead do this in a hybrid way using DRIVER_MODULE
and make_dev(9), which has the exact traditional functionality i want in
this. any ideas? two of the three device nodes this driver will create
will require read(2)/select(2) interfaces visible to userland, and the
third driver will require write(2) visible to userland.
the question is: is there a way to use DRIVER_MODULE, which seems
necessary for usbdi, yet create the devfs nodes using make_dev/cdevsw?
i would prefer to not have DRIVER_MODULE create the device nodes.
am i missing something? i again apologize for the newbie questions...
jim
Hans Petter Selasky wrote:
On Tuesday 24 May 2011 23:19:27 Jim Bryant wrote:
if i add such an interface to the current DRIVER_MODULE version, how
would i go about NOT having DRIVER_MODULE create the devfs entries? i
would prefer to have the devfs entries handled by make_dev, so to have
access to the desired syscalls.
Look at /sys/dev/usb/serial/ulpt.c
For a simple example.
More abstract:
"cd /usr/ports/multimedia/cuse4bsd" and "man libusb20"
--HPS
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