linux-toradex.git/include/linux/remoteproc.h, branch v4.16-rc4

remoteproc: Drop dangling find_rsc_table dummies

2018-01-15T17:30:00+00:00

As the core now deals with the lack of a resource table, remove the
dangling custom dummy implementations of find_rsc_table from drivers.

Reviewed-By: Loic Pallardy 
Tested-By: Loic Pallardy 
Signed-off-by: Bjorn Andersson

remoteproc: Move resource table load logic to find

2018-01-15T17:29:53+00:00

Extend the previous operation of finding the resource table in the ELF
with the extra step of populating the rproc struct with a copy and the
size. This allows drivers to override the mechanism used for acquiring
the resource table, or omit it for firmware that is known not to have a
resource table.

This leaves the custom, dummy, find_rsc_table implementations found in
some drivers dangling.

Reviewed-By: Loic Pallardy 
Tested-By: Loic Pallardy 
Signed-off-by: Bjorn Andersson

remoteproc: Merge rproc_ops and rproc_fw_ops

2018-01-15T17:29:40+00:00

There are currently a few different schemes used for overriding fw_ops
or parts of fw_ops. Merge fw_ops into rproc_ops and expose the default
ELF-loader symbols so that they can be assigned by the drivers.

To keep backwards compatibility with the "default" case, a driver not
specifying the "load" operation is assumed to want the full ELF-loader
suit of functions.

Reviewed-By: Loic Pallardy 
Tested-By: Loic Pallardy 
Signed-off-by: Bjorn Andersson

remoteproc: Clone rproc_ops in rproc_alloc()

2018-01-15T17:29:34+00:00

In order to allow rproc_alloc() to, in a future patch, update entries in
the "ops" struct we need to make a local copy of it.

Reviewed-By: Loic Pallardy 
Tested-By: Loic Pallardy 
Signed-off-by: Bjorn Andersson

remoteproc: Cache resource table size

2018-01-15T17:29:29+00:00

We don't re-read the resource table during a recovery, so it is possible
in the recovery path that the resource table has a different size than
cached_table. Store the original size of cached_table to avoid these
getting out of sync.

Reviewed-By: Loic Pallardy 
Tested-By: Loic Pallardy 
Signed-off-by: Bjorn Andersson

remoteproc: Remove depricated crash completion

2018-01-15T17:29:16+00:00

The crash handling now happens in a single execution context, so there's
no longer a need for a completion to synchronize this.

Reviewed-By: Loic Pallardy 
Tested-By: Loic Pallardy 
Signed-off-by: Bjorn Andersson

remoteproc: Introduce rproc handle accessor for children

2017-09-01T22:49:13+00:00

In certain circumstances rpmsg devices needs to acquire a handle to the
ancestor remoteproc instance, e.g. to invoke rproc_report_crash() when a
fatal error is detected. Introduce an interface that walks the device
tree in search for a remoteproc instance and return this.

Tested-by: Suman Anna 
Signed-off-by: Bjorn Andersson

remoteproc: Drop firmware_loading_complete

2017-01-30T22:18:54+00:00

firmware_loading_complete is used to synchronize operations
on rproc while asynchronous firmware loading is in progress.
However, rproc_boot() no longer waits on
firmware_loading_complete. Hence drop this completion
variable altogether and handle the race between rproc_del()
and rproc_boot() using new state RPROC_DELETED.

The request_firmware_nowait() will hold the reference to
rproc device by using a get_device()/put_device(), so the
rproc struct will remain valid even when we return from
rproc_del() before the asynchronous call to
rproc_fw_config_virtio() completes.

CC: Loic Pallardy 
CC: Bjorn Andersson 
Signed-off-by: Sarangdhar Joshi 
Signed-off-by: Bjorn Andersson

remoteproc: Add RPROC_DELETED state

2017-01-30T22:18:52+00:00

Add new state RPROC_DELETED to handle synchronization
between rproc_del() and other operations on rproc. This
state represents the rproc device that has been "deleted".

CC: Loic Pallardy 
CC: Bjorn Andersson 
Signed-off-by: Sarangdhar Joshi 
Signed-off-by: Bjorn Andersson

Revert "remoteproc: Merge table_ptr and cached_table pointers"

2016-12-30T11:26:31+00:00

Following any fw_rsc_vdev entries in the resource table are two variable
length arrays, the first one reference vring resources and the second
one is the virtio config space.  The virtio config space is used by
virtio to communicate status and configuration changes and must as such
be shared with the remote.

The reverted commit incorrectly made any changes to the virtio config
space only affect the local copy, in an attempt to allowing memory
protection of the shared resource table.

This reverts commit cda8529346935fc86f476999ac4fbfe4e17abf11.
Signed-off-by: Bjorn Andersson