linux/drivers/uio/Kconfig
Magnus Damm c767db0ab4 UIO: generic irq handling for some uio platform devices
This is V3 of uio_pdrv_genirq.c, a platform driver for UIO with
generic IRQ handling code. This driver is very similar to the regular
UIO platform driver, but is only suitable for devices that are
connected to the interrupt controller using unique interrupt lines.

The uio_pdrv_genirq driver includes generic interrupt handling code
which disables the serviced interrupt in the interrupt controller
and makes the user space driver responsible for acknowledging the
interrupt in the device and reenabling the interrupt in the interrupt
controller.

Shared interrupts are not supported since the in-kernel interrupt
handler will disable the interrupt line in the interrupt controller,
and in a shared interrupt configuration this will stop other devices
from delivering interrupts.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-08-21 10:15:39 -07:00

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menuconfig UIO
tristate "Userspace I/O drivers"
depends on !S390
default n
help
Enable this to allow the userspace driver core code to be
built. This code allows userspace programs easy access to
kernel interrupts and memory locations, allowing some drivers
to be written in userspace. Note that a small kernel driver
is also required for interrupt handling to work properly.
If you don't know what to do here, say N.
if UIO
config UIO_CIF
tristate "generic Hilscher CIF Card driver"
depends on PCI
default n
help
Driver for Hilscher CIF DeviceNet and Profibus cards. This
driver requires a userspace component that handles all of the
heavy lifting and can be found at:
http://www.osadl.org/projects/downloads/UIO/user/cif-*
To compile this driver as a module, choose M here: the module
will be called uio_cif.
config UIO_PDRV
tristate "Userspace I/O platform driver"
help
Generic platform driver for Userspace I/O devices.
If you don't know what to do here, say N.
config UIO_PDRV_GENIRQ
tristate "Userspace I/O platform driver with generic IRQ handling"
help
Platform driver for Userspace I/O devices, including generic
interrupt handling code. Shared interrupts are not supported.
This kernel driver requires that the matching userspace driver
handles interrupts in a special way. Userspace is responsible
for acknowledging the hardware device if needed, and re-enabling
interrupts in the interrupt controller using the write() syscall.
If you don't know what to do here, say N.
config UIO_SMX
tristate "SMX cryptengine UIO interface"
default n
help
Userspace IO interface to the Cryptography engine found on the
Nias Digital SMX boards. These will be available from Q4 2008
from http://www.niasdigital.com. The userspace part of this
driver will be released under the GPL at the same time as the
hardware and will be able to be downloaded from the same site.
If you compile this as a module, it will be called uio_smx.
endif