--- zzzz-none-000/linux-5.4.213/include/linux/remoteproc.h	2022-09-15 10:04:56.000000000 +0000
+++ miami-7690-761/linux-5.4.213/include/linux/remoteproc.h	2024-05-29 11:20:02.000000000 +0000
@@ -42,6 +42,28 @@
 #include <linux/idr.h>
 #include <linux/of.h>
 
+/** enum subsystem notifiers
+ * @SUBSYS_BEFORE_SHUTDOWN remoteproc is about to get powerdown
+ * @SUBSYS_AFTER_SHUTDOWN remoteproc shutdown is complete
+ * @SUBSYS_BEFORE_POWERUP remoteproc is about to get power up
+ * @SUBSYS_AFTER_POWERUP remoteproc power up is complete
+ * @SUBSYS_RAMDUMP_NOTIFICATION ramdump can be collected
+ * @SUBSYS_POWERUP_FAILURE power up failed
+ * @SUBSYS_PREPARE_FOR_FATAL_SHUTDOWN remoteproc fatal exception receivced
+ */
+enum subsys_notif_type {
+	SUBSYS_BEFORE_SHUTDOWN,
+	SUBSYS_AFTER_SHUTDOWN,
+	SUBSYS_BEFORE_POWERUP,
+	SUBSYS_AFTER_POWERUP,
+	SUBSYS_RAMDUMP_NOTIFICATION,
+	SUBSYS_POWERUP_FAILURE,
+	SUBSYS_PROXY_VOTE,
+	SUBSYS_PROXY_UNVOTE,
+	SUBSYS_SOC_RESET,
+	SUBSYS_PREPARE_FOR_FATAL_SHUTDOWN,
+	SUBSYS_NOTIF_TYPE_COUNT
+};
 /**
  * struct resource_table - firmware resource table header
  * @ver: version number
@@ -369,6 +391,7 @@
  *			expects to find it
  * @sanity_check:	sanity check the fw image
  * @get_boot_addr:	get boot address to entry point specified in firmware
+ * @coredump:		collect firmware dump after the subsystem is shutdown
  */
 struct rproc_ops {
 	int (*start)(struct rproc *rproc);
@@ -383,6 +406,8 @@
 	int (*load)(struct rproc *rproc, const struct firmware *fw);
 	int (*sanity_check)(struct rproc *rproc, const struct firmware *fw);
 	u32 (*get_boot_addr)(struct rproc *rproc, const struct firmware *fw);
+	void (*report_panic)(struct rproc *rproc);
+	void (*coredump)(struct rproc *rproc);
 };
 
 /**
@@ -479,6 +504,7 @@
  * @table_sz: size of @cached_table
  * @has_iommu: flag to indicate if remote processor is behind an MMU
  * @auto_boot: flag to indicate if remote processor should be auto-started
+ * @backdoor: flag to indicate if firmware request can be skipped
  * @dump_segments: list of segments in the firmware
  * @nb_vdev: number of vdev currently handled by rproc
  */
@@ -512,8 +538,11 @@
 	size_t table_sz;
 	bool has_iommu;
 	bool auto_boot;
+	bool backdoor;
 	struct list_head dump_segments;
 	int nb_vdev;
+	struct blocking_notifier_head nlist;
+	struct atomic_notifier_head atomic_nlist;
 };
 
 /**
@@ -618,6 +647,8 @@
 						     struct rproc_dump_segment *segment,
 						     void *dest),
 				      void *priv);
+int rproc_start(struct rproc *rproc, const struct firmware *fw);
+int rproc_stop(struct rproc *rproc, bool crashed);
 
 static inline struct rproc_vdev *vdev_to_rvdev(struct virtio_device *vdev)
 {
@@ -635,4 +666,10 @@
 
 void rproc_remove_subdev(struct rproc *rproc, struct rproc_subdev *subdev);
 
+struct rproc *rproc_get_by_name(const char* name);
+int rproc_register_subsys_notifier(const char *name, struct notifier_block *nb,
+		struct notifier_block *atomic_nb);
+int rproc_unregister_subsys_notifier(const char *name, struct notifier_block *nb,
+		struct notifier_block *atomic_nb);
+void rproc_subsys_notify(struct rproc *rproc, int event, bool atomic);
 #endif /* REMOTEPROC_H */