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As a first step to have a clearer separation of the different parts of
the kernel driver, the source files have been placed into separate
directories according to their purpose and the different parts are only
allowed to use headers from another part in the include folder.
Files have been renamed accordingly to namespace them by their purpose.
Change-Id: I75e09ebf0002c99a22b6d4b09d34504d186c32b3
Signed-off-by: Mikael Olsson <mikael.olsson@arm.com>
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Changed several logs level from info to dbg and removed redundant or
uninformative logging in order to reduce verbosity of the kernel
modules.
Change-Id: Ie9ff7f3ae6478007ea58547380b3ddfef5d280b4
Signed-off-by: Ledion Daja <ledion.daja@arm.com>
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The kernel driver's version is now exposed in the UAPI so the UAPI user
can validate that they are compatible with the kernel driver in use.
Change-Id: I52d096dfaedb8c3c1889d27a907626be96779ee7
Signed-off-by: Mikael Olsson <mikael.olsson@arm.com>
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If the rpmsg channel to communicate with the subsystem is not available
until after the NPU kernel driver has been registered, the driver's
probe function will be called from the rpmsg message receive callback
and block handling of any other messages until the probing is done.
To avoid blocking the callback while performing the probing and to allow
the probe to communicate with the subsystem, the kernel driver will now
request that its probe function is called asynchronously.
Change-Id: Iaeaa4a2322f6a76c0acd202e69b91a8beeb6114b
Signed-off-by: Mikael Olsson <mikael.olsson@arm.com>
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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
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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
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The Ethos-U kernel driver has been converted from a
platform driver with a custom firmware interface into a
rpmsg driver.
Change-Id: I9ae449f5e79eb02924e6630611d0893e5fec86be
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Support referencing a network model by index that has been built into
the firmware binary.
Change-Id: Idd5294376ea82503dfeafe1203dcc0694d296dfe
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Allocate a range of minor numbers and use the minor number as index
when creating the /dev/ethosu<nr> device node.
Change-Id: I76c2a3995ff5087e42a4e95945eb884a4bfb58f6
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Change-Id: I14b6becc908a0ac215769c32ee9c43db192ae6c8
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