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| author | Siddharth Gupta <sidgup@codeaurora.org> | 2020-07-29 10:40:00 -0700 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-08-04 20:16:37 -0700 |
| commit | 4476770881d7ac647e3bcae0943f37e00b9c3f3c (patch) | |
| tree | e294bd66a1f7888ed31ffb88beec163381bbf313 /include/linux/remoteproc.h | |
| parent | 2f3ee5e481ce850b5b51a306b01a5e9187b206ae (diff) | |
| download | lwn-4476770881d7ac647e3bcae0943f37e00b9c3f3c.tar.gz lwn-4476770881d7ac647e3bcae0943f37e00b9c3f3c.zip | |
remoteproc: Add remoteproc character device interface
Add the character device interface into remoteproc framework.
This interface can be used in order to boot/shutdown remote
subsystems and provides a basic ioctl based interface to implement
supplementary functionality. An ioctl call is implemented to enable
the shutdown on release feature which will allow remote processors to
be shutdown when the controlling userspace application crashes or hangs.
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
Signed-off-by: Siddharth Gupta <sidgup@codeaurora.org>
Link: https://lore.kernel.org/r/1596044401-22083-2-git-send-email-sidgup@codeaurora.org
[bjorn: s/int32_t/s32/ per checkpatch]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'include/linux/remoteproc.h')
| -rw-r--r-- | include/linux/remoteproc.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h index 0e8d2ff575b4..2fa68bf5aa4f 100644 --- a/include/linux/remoteproc.h +++ b/include/linux/remoteproc.h @@ -38,6 +38,7 @@ #include <linux/types.h> #include <linux/mutex.h> #include <linux/virtio.h> +#include <linux/cdev.h> #include <linux/completion.h> #include <linux/idr.h> #include <linux/of.h> @@ -509,6 +510,8 @@ struct rproc_dump_segment { * @autonomous: true if an external entity has booted the remote processor * @dump_segments: list of segments in the firmware * @nb_vdev: number of vdev currently handled by rproc + * @char_dev: character device of the rproc + * @cdev_put_on_release: flag to indicate if remoteproc should be shutdown on @char_dev release */ struct rproc { struct list_head node; @@ -546,6 +549,8 @@ struct rproc { int nb_vdev; u8 elf_class; u16 elf_machine; + struct cdev cdev; + bool cdev_put_on_release; }; /** |