When a device help is requested with `-d help', the socket argument is
still required. This patch:
- replaces `-d help' with --help-devices;
- stops requiring the socket argument in such a case;
- prints help in case of command line parsing errors.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Industrial I/O (IIO) devices are present in /sys/bus/iio/devices/ on
Linux. This patch makes them accessible to the guests via the sensor
SCMI protocol.
The implementation no way covers all the possible IIO devices. It
supports some basic stuff, other sensors can be added as needed.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Make unit handling better SCMI compliant. Let's distinguish between
scalar sensors and axis sensors and report the units in the
appropriate SCMI commands. Also, let's change the unit type to u8 to
correspond to the number of unit bits in SCMI.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Making the device configuration polymorphic requires the device struct
to exist before the device parameters are checked and assigned to the
struct fields. Which means wrapping the struct fields by Option
unnecessarily or introducing other data confusion.
Let's extract the device configuration from traits to plain functions
in order to keep the device struct's unencumbered.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Writing `--device help' on the command line will list all the
available devices and their parameters.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Different sensors will have similar handling. Let’s extract generic
parts from FakeSensor implementation into a reusable code, within the
limits of Rust.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
The code already contains support for creating devices that can serve
as SCMI-accessible sensors and a sample fake devices. But to actually
use the device, the code must be modified.
This patch adds a command line option to define the devices on start.
The format of the option value is in the QEMU style:
DEVICE,PROPERTY=VALUE,…
For example:
--device fake,name=fake1 fake,name=fake2
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
This patch implements the necessary parts of the SCMI sensor
management protocol, required either by the SCMI standard or by Linux
VIRTIO SCMI drivers to function correctly. A part of this
implementation is a fake sensor device, which is useful for both unit
testing here and a testing with a real guest OS.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Implementation of the mandatory parts of the SCMI base protocol. This
allows the daemon to communicate with the guest SCMI VIRTIO device,
although not yet providing any useful functionality.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
This patch adds support for a SCMI vhost-user device. It implements
the basic skeleton of the vhost-user daemon and of SCMI processing.
It doesn’t provide any real functionality yet, adding it will be the
subject of followup patches.
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
