Change-Id: Id5349a7668ff7ce4d23730d98aa9bd5032a1ece2

Change-Id: I3d7926cb16b613f588ef33944546df394193160e

The Ethos-U kernel driver has been converted into a rpmsg driver and
the ethosu_core_interface.h has been replaced by ethsou_core_rpmsg.h.

Change-Id: If6db8c20cd88e950545eed561ed95c067157d061

When the Ethos-U kernel driver is probed it creates a /dev/ethosu<nr>
device node, which user space use ioctl to communicate with. When
the driver is removed the Ethos-U resources must live on until all
open file handles have been closed.

The rpmsg device can be removed for a number of reasons, for example
if the firmware is stopped or the remoteproc driver is removed. To
allow the remove to complete without waiting for all file handles to
close, a new 'struct device' is created by the kernel driver. This
device will be used to memory allocations and will live on until the
last file handle has been closed.

Change-Id: I790d8219960f25fe64f58c11a865eb65c7b08974

The 'struct ethosu_device' has been passed as argument to classes.
This creates a circular dependency dependency and it gives all
classes full visibility to all resources in the device struct. This
patch removes the circular dependency.

Using device_lock() and device_unlock() to for synchronization.

Change-Id: I8322e6530c72d7bd67f48f411b4f14b612be2706

The Ethos-U kernel driver has been converted from a
platform driver with a custom firmware interface into a
rpmsg driver.

Change-Id: I9ae449f5e79eb02924e6630611d0893e5fec86be

Removing watchdog and firmware reset as a preparations for the
migrations to rpmsg.

Change-Id: Ic1053e3f4301ecadbde8c59dbaed437625a0a5ea

Tie in mbox and reset driver and add support for virtio carveouts.
Also move the reserved mem for device mem to the remoteproc node.

Change-Id: I7e8878d32ae7c02d5b43198e45652e77f8ff79ca

Change-Id: If27999db4f18355b571b67e5e5d663a703c3f6a3

Change-Id: Id70e249448cea13cb9273d68c91080342d5c5973

Change-Id: I1ab89146bf897c4c35180ab09f08064511f573f8

Change-Id: I69d0acf67327424809397f5fcf236b99bc980d71

Kshitij Sisodia authored Sep 30, 2022 and Kristofer Jonsson committed Oct 25, 2022

Python `ethosu_driver` could be built as part of Arm Ethos-U Linux
driver library CMake flow.

See driver_library/python/README.md for more details.

Change-Id: I177a890add5c13df9a839f4f43621f972afe5ab1
Signed-off-by: Kshitij Sisodia <kshitij.sisodia@arm.com>

Change-Id: Ib21a9692e0a8f78cf584ab6ee3fadc0568822e88

These tests are run with a special custom firmware

Change-Id: I0dfcae1fbaa1287d4b52fd8f6c802bebb5248d3b

Change-Id: I303f1424eb46576847312672f7ed5ac03c05aee1

That platform has been replaced by Corstone-1000

Change-Id: I2dd6e190cbbc84c02f101bd6214c802585d8ca25

Add logging class for driver library. Log severity can be configured
using an environment variable.

Add information to prints in kernel space.

Change-Id: I19a1078869733746726515a6cafb79110314066d

Once the inference file descriptor has been created the inference
release must be handled by the file descriptor release callback.

Change-Id: Ic514983e85821ea3893e11c5c682610f67d1ae31

Reduce queue capacity by one byte, else it will not be possible to
distinguish between an empty and full queue.

Change-Id: Ia243a7175833826dc816d536cc79ac5a252f3e3a

The error code from the core side was not correctly propagated to
user space.

Change-Id: I40e502f8dc3a77de064f441beeb62603d013e318

The padding is important to separate the read- and write indices by
at least one cache line, to prevent cache clean and invalidation to
corrupt data for the remote CPU.

Change-Id: I1d50ac6c63ef4cb3e11b0c293aefaac34ac8eb1f

Per Astrand authored Apr 06, 2022 and Kristofer Jonsson committed Jun 01, 2022

Add reset controller driver for external system.
The driver is instantiated for each subsystem reset needed to control.

Change-Id: I481e56124de30b807858ca3f5fe8f78fc18502ce

ETHOSU_IOCTL_CAPABILITIES_REQ is a read ioctl with a parameter.

Change-Id: Ife20d4de86351053600e6c6ba174dc40896f0aef

Avoid to use pointers to kernel memory as identify messages, prior this
change, if memory is reused that can lead to unexpected conflicts.

Remove ref counting from capabilities and network_info since memory is
freed in only one place.

Finally, extract the capabilities code in its own files.

Change-Id: I9ab7257f3ab85fa3347be65b3739e0daf9b5a441

Change-Id: Ic5d98c108593a16034c7dbc18043bbee13c31833

Per Astrand authored May 18, 2022 and Kristofer Jonsson committed May 18, 2022

Avoid undefined behaviour from calling dma_alloc_coherent with
requested size=0 as reported by UBSAN.

Change-Id: I1732759464f1d88259edeea099b1729f4ae6b86f

strscpy copies max destination size -1 chars and ensures NULL
termination.  It also return an error if the destination buffer is too
small.

Change-Id: I88e9e5020b2b26ca50c12ae845dad070855a8bde

If an inference fails to be cancelled and it is still in a pending
state, reset the whole firmware.  Indeed the assumption is that
something is at fault on the firmware side and it is not progressing.

Change-Id: I2f568b2167d86cda3cb96a5e83551b018f5fc55d

Send cancel inference messages to the ethosu subsystem to abort
inference execution there.  Also mark inference as aborted in the
linux driver stack itself, so pending inference messages are not
resent when resetting the firmware.

Change-Id: I244c2b119fd7995d14e3859815abf2a00c7f0583

Change-Id: I62e13df69c712ed4cf70766429b4cb13fc9c9dcb

The .da_to_va has different signatures for different kernel versions.
Add kernel version checks to pick the correct one.

Change-Id: Ie25c496aa646119526867c91f244f9ad195860cd

Add scripts for gathering coverage data on target, and analyzing
coverage info on host.

Change-Id: I3bb2d0ec3757ce077638a8780779daa84cd48686

Also always rethrow exceptions not swallow them

Change-Id: I7a4b1e408858aa0d0128ca7bd6d6a7715662f9fb

There is not real need for the linux_driver_stack to know about tflite
and flatbuffers.  A better approach is to just pass the buffer to the
firmware to be processes, i.e., either parsed or executed.

This solves issues when linux_driver_stack and firmware are not in
sync with the same library versions.

Change-Id: I9b2a12e69f37f61b1ac594433a15883fb1c67b9c

Reset the firmware if it becomes unresponsive. Use ping to send
keep alive requests.

Only monitor ping and inference request messages. The other messages
pass no resources to the firmware and can be cancelled without
resetting the firmware.

Change-Id: Ifbcc370f02d79a64f25598f11376a1dc84a7a066

Implement kernel watchdog that detects when firmware becomes
unresponsive.

Change-Id: I5c5b58a56a2ce629e1fd7cabae83b61823239ea6

Add UAPI and core message that allows user space space to fetch
information about network models built into the firmware.

Change-Id: Ic92529bce3edd0a5499e691a566bd065da2a72ad

Support referencing a network model by index that has been built into
the firmware binary.

Change-Id: Idd5294376ea82503dfeafe1203dcc0694d296dfe

Change-Id: Iaf878efcbe42d7a658a76db868806114df9e4b27