[PATCH v2 14/17] drivers/firmware/sdei: Move struct sdei_event to header file

[Gavin Shan]

This moves struct sdei_event to the header file so that it can be
dereferenced by external modules. This is needed by the code to
virtualize SDEI functionality, as part of the arm64/kvm.

Signed-off-by: Gavin Shan <gshan at redhat.com>
---
v2: Derived from "drivers/firmware/sdei: Identify event by struct"
---
 drivers/firmware/arm_sdei.c | 20 ------------
 include/linux/arm_sdei.h    | 61 ++++++++++++++++++++++++-------------
 2 files changed, 40 insertions(+), 41 deletions(-)

diff --git a/drivers/firmware/arm_sdei.c b/drivers/firmware/arm_sdei.c
index a52dcff59a20..bdd2de0149c0 100644
--- a/drivers/firmware/arm_sdei.c
+++ b/drivers/firmware/arm_sdei.c
@@ -44,26 +44,6 @@ static asmlinkage void (*sdei_firmware_call)(unsigned long function_id,
 /* entry point from firmware to arch asm code */
 static unsigned long sdei_entry_point;
 
-struct sdei_event {
-	/* These three are protected by the sdei_list_lock */
-	struct list_head	list;
-	bool			reregister;
-	bool			reenable;
-
-	u32			event_num;
-	u8			type;
-	u8			priority;
-
-	/* This pointer is handed to firmware as the event argument. */
-	union {
-		/* Shared events */
-		struct sdei_registered_event *registered;
-
-		/* CPU private events */
-		struct sdei_registered_event __percpu *private_registered;
-	};
-};
-
 /* Take the mutex for any API call or modification. Take the mutex first. */
 static DEFINE_MUTEX(sdei_events_lock);
 
diff --git a/include/linux/arm_sdei.h b/include/linux/arm_sdei.h
index 0a241c5c911d..fdc2f868d84b 100644
--- a/include/linux/arm_sdei.h
+++ b/include/linux/arm_sdei.h
@@ -22,6 +22,46 @@
  */
 typedef int (sdei_event_callback)(u32 event, struct pt_regs *regs, void *arg);
 
+/*
+ * This struct represents an event that has been registered. The driver
+ * maintains a list of all events, and which ones are registered. (Private
+ * events have one entry in the list, but are registered on each CPU).
+ * A pointer to this struct is passed to firmware, and back to the event
+ * handler. The event handler can then use this to invoke the registered
+ * callback, without having to walk the list.
+ *
+ * For CPU private events, this structure is per-cpu.
+ */
+struct sdei_registered_event {
+	/* For use by arch code: */
+	struct pt_regs          interrupted_regs;
+
+	sdei_event_callback	*callback;
+	void			*callback_arg;
+	u32			 event_num;
+	u8			 priority;
+};
+
+struct sdei_event {
+	/* These three are protected by the sdei_list_lock */
+	struct list_head	list;
+	bool			reregister;
+	bool			reenable;
+
+	u32			event_num;
+	u8			type;
+	u8			priority;
+
+	/* This pointer is handed to firmware as the event argument. */
+	union {
+		/* Shared events */
+		struct sdei_registered_event *registered;
+
+		/* CPU private events */
+		struct sdei_registered_event __percpu *private_registered;
+	};
+};
+
 /*
  * Register your callback to claim an event. The event must be described
  * by firmware.
@@ -51,27 +91,6 @@ static inline int sdei_mask_local_cpu(void) { return 0; }
 static inline int sdei_unmask_local_cpu(void) { return 0; }
 #endif /* CONFIG_ARM_SDE_INTERFACE */
 
-
-/*
- * This struct represents an event that has been registered. The driver
- * maintains a list of all events, and which ones are registered. (Private
- * events have one entry in the list, but are registered on each CPU).
- * A pointer to this struct is passed to firmware, and back to the event
- * handler. The event handler can then use this to invoke the registered
- * callback, without having to walk the list.
- *
- * For CPU private events, this structure is per-cpu.
- */
-struct sdei_registered_event {
-	/* For use by arch code: */
-	struct pt_regs          interrupted_regs;
-
-	sdei_event_callback	*callback;
-	void			*callback_arg;
-	u32			 event_num;
-	u8			 priority;
-};
-
 /* The arch code entry point should then call this when an event arrives. */
 int notrace sdei_event_handler(struct pt_regs *regs,
 			       struct sdei_registered_event *arg);
-- 
2.23.0