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authorBjorn Andersson <bjorn.andersson@linaro.org>2016-10-20 05:40:02 +0300
committerBjorn Andersson <bjorn.andersson@linaro.org>2016-11-10 08:17:08 +0300
commit7bdc9650f03604b06ba7434fab694e8ae8ca782d (patch)
treec6365b9ca25e6ae613168a07533fb94f1ae87c53 /include/linux/remoteproc.h
parent1d701d3dd8caf6660ff33c3c23a115b4649c5cdb (diff)
downloadlinux-7bdc9650f03604b06ba7434fab694e8ae8ca782d.tar.xz
remoteproc: Introduce subdevices
A subdevice is an abstract entity that can be used to tie actions to the booting and shutting down of a remote processor. The subdevice object is expected to be embedded in concrete implementations, allowing for a variety of use cases to be implemented. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'include/linux/remoteproc.h')
-rw-r--r--include/linux/remoteproc.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 940e4cf2ac48..f6d5e66854e4 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -400,6 +400,7 @@ enum rproc_crash_type {
* @firmware_loading_complete: marks e/o asynchronous firmware loading
* @bootaddr: address of first instruction to boot rproc with (optional)
* @rvdevs: list of remote virtio devices
+ * @subdevs: list of subdevices, to following the running state
* @notifyids: idr for dynamically assigning rproc-wide unique notify ids
* @index: index of this rproc device
* @crash_handler: workqueue for handling a crash
@@ -431,6 +432,7 @@ struct rproc {
struct completion firmware_loading_complete;
u32 bootaddr;
struct list_head rvdevs;
+ struct list_head subdevs;
struct idr notifyids;
int index;
struct work_struct crash_handler;
@@ -444,6 +446,19 @@ struct rproc {
bool auto_boot;
};
+/**
+ * struct rproc_subdev - subdevice tied to a remoteproc
+ * @node: list node related to the rproc subdevs list
+ * @probe: probe function, called as the rproc is started
+ * @remove: remove function, called as the rproc is stopped
+ */
+struct rproc_subdev {
+ struct list_head node;
+
+ int (*probe)(struct rproc_subdev *subdev);
+ void (*remove)(struct rproc_subdev *subdev);
+};
+
/* we currently support only two vrings per rvdev */
#define RVDEV_NUM_VRINGS 2
@@ -511,4 +526,11 @@ static inline struct rproc *vdev_to_rproc(struct virtio_device *vdev)
return rvdev->rproc;
}
+void rproc_add_subdev(struct rproc *rproc,
+ struct rproc_subdev *subdev,
+ int (*probe)(struct rproc_subdev *subdev),
+ void (*remove)(struct rproc_subdev *subdev));
+
+void rproc_remove_subdev(struct rproc *rproc, struct rproc_subdev *subdev);
+
#endif /* REMOTEPROC_H */