linux-stable.git/include/linux/remoteproc.h, branch v6.0.2

remoteproc: rename len of rpoc_vring to num

2022-08-11T08:06:37+00:00

Rename the member len in the structure rpoc_vring to num. And remove 'in
bytes' from the comment of it. This is misleading. Because this actually
refers to the size of the virtio vring to be created. The unit is not
bytes.

Signed-off-by: Xuan Zhuo 
Message-Id: <20220624025621.128843-2-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin

remoteproc: Change rproc_shutdown() to return a status

2022-03-11T20:31:55+00:00

The rproc_shutdown() function is currently not returning any
error code, and any failures within rproc_stop() are not passed
back to the users. Change the signature to return a success value
back to the callers.

The remoteproc sysfs and cdev interfaces are also updated to
return back this status to userspace.

Signed-off-by: Suman Anna 
Signed-off-by: Bjorn Andersson 
Link: https://lore.kernel.org/r/20220213201246.25952-2-s-anna@ti.com

remoteproc: move rproc_da_to_va declaration to remoteproc.h

2022-03-11T18:08:09+00:00

The rproc_da_to_va() API is an exported function, so move its
declaration from the remoteproc local remoteproc_internal.h
to the public remoteproc.h file.

This will allow drivers outside of the remoteproc folder to be
able to use this API.

Signed-off-by: Suman Anna 
Signed-off-by: Dave Gerlach 
[adjusted line numbers to apply]
Signed-off-by: Drew Fustini 
Signed-off-by: Bjorn Andersson 
Link: https://lore.kernel.org/r/20220308172515.29556-1-dfustini@baylibre.com

remoteproc: Introduce sysfs_read_only flag

2022-03-04T16:28:25+00:00

The remoteproc framework provides sysfs interfaces for changing
the firmware name and for starting/stopping a remote processor
through the sysfs files 'state' and 'firmware'. The 'coredump'
file is used to set the coredump configuration. The 'recovery'
sysfs file can also be used similarly to control the error recovery
state machine of a remoteproc. These interfaces are currently
allowed irrespective of how the remoteprocs were booted (like
remoteproc self auto-boot, remoteproc client-driven boot etc).
These interfaces can adversely affect a remoteproc and its clients
especially when a remoteproc is being controlled by a remoteproc
client driver(s). Also, not all remoteproc drivers may want to
support the sysfs interfaces by default.

Add support to make the remoteproc sysfs files read only by
introducing a state flag 'sysfs_read_only' that the individual
remoteproc drivers can set based on their usage needs. The default
behavior is to allow the sysfs operations as before.

Implement attribute_group->is_visible() to make the sysfs
entries read only when 'sysfs_read_only' flag is set.

Signed-off-by: Puranjay Mohan 
Link: https://lore.kernel.org/r/20220216081224.9956-2-p-mohan@ti.com
Signed-off-by: Mathieu Poirier

remoteproc: Remove vdev_to_rvdev and vdev_to_rproc from remoteproc API

2021-10-15T14:49:55+00:00

These both functions are only used by the remoteproc_virtio.
There is no reason to expose them in the API.
Move the functions in remoteproc_virtio.c

Signed-off-by: Arnaud Pouliquen 
Signed-off-by: Bjorn Andersson 
Link: https://lore.kernel.org/r/20211001101234.4247-4-arnaud.pouliquen@foss.st.com

remoteproc: fix kernel doc for struct rproc_ops

2021-07-28T19:57:31+00:00

The load_rsc_table was removed since the
commit c1d35c1ab424 ("remoteproc: Rename "load_rsc_table" to "parse_fw"")
but got added back again by mistake in the below commit:
commit b1a17513a2d6 ("remoteproc: add vendor resources handling").

The patch fixed a small code indent issue which not worth
a separate patch.

Fixes: b1a17513a2d6 ("remoteproc: add vendor resources handling")
Signed-off-by: Dong Aisheng 
Link: https://lore.kernel.org/r/20210706142156.952794-2-aisheng.dong@nxp.com
Signed-off-by: Bjorn Andersson

remoteproc: Fix various kernel-doc warnings

2021-05-28T03:07:43+00:00

Fix all the kernel-doc warnings in various remoteproc core files.
Some of them just needed a formatting cleanup change, while others
needed the Return statement to be added, or documenting the missed
structure elements.

Reviewed-by: Mathieu Poirier 
Signed-off-by: Suman Anna 
Link: https://lore.kernel.org/r/20210519180304.23563-3-s-anna@ti.com
Signed-off-by: Bjorn Andersson

remoteproc: Properly deal with the resource table when detaching

2021-03-18T13:00:51+00:00

If it is possible to detach the remote processor, keep an untouched
copy of the resource table.  That way we can start from the same
resource table without having to worry about original values or what
elements the startup code has changed when re-attaching to the remote
processor.

Signed-off-by: Mathieu Poirier 
Reviewed-by: Arnaud Pouliquen 
Link: https://lore.kernel.org/r/20210312162453.1234145-12-mathieu.poirier@linaro.org
Signed-off-by: Bjorn Andersson

remoteproc: Introduce function rproc_detach()

2021-03-18T12:55:47+00:00

Introduce function rproc_detach() to enable the remoteproc
core to release the resources associated with a remote processor
without stopping its operation.

Signed-off-by: Mathieu Poirier 
Reviewed-by: Arnaud Pouliquen 
Link: https://lore.kernel.org/r/20210312162453.1234145-11-mathieu.poirier@linaro.org
Signed-off-by: Bjorn Andersson

remoteproc: Add new detach() remoteproc operation

2021-03-18T12:55:46+00:00

Add an new detach() operation in order to support scenarios where
the remoteproc core is going away but the remote processor is
kept operating.  This could be the case when the system is
rebooted or when the platform driver is removed.

Signed-off-by: Mathieu Poirier 
Reviewed-by: Peng Fan 
Reviewed-by: Arnaud Pouliquen 
Link: https://lore.kernel.org/r/20210312162453.1234145-9-mathieu.poirier@linaro.org
Signed-off-by: Bjorn Andersson