include: trace: Add SCMI full message tracing

Add a distinct trace event to dump full SCMI message headers and payloads.

Link: https://lore.kernel.org/r/20220630173135.2086631-2-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

diff --git a/include/trace/events/scmi.h b/include/trace/events/scmi.h
index cee4b2b64ae44e658a2ce99a7b2a435b57bf0ee6..9108544beca9a00d1e5eea2062d37ffbf558f018 100644 (file)
--- a/include/trace/events/scmi.h
+++ b/include/trace/events/scmi.h
@@ -112,6 +112,37 @@ TRACE_EVENT(scmi_rx_done,
                __entry->transfer_id, __entry->msg_id, __entry->protocol_id,
                __entry->seq, __entry->msg_type)
 );
+
+TRACE_EVENT(scmi_msg_dump,
+       TP_PROTO(u8 protocol_id, u8 msg_id, unsigned char *tag, u16 seq,
+                int status, void *buf, size_t len),
+       TP_ARGS(protocol_id, msg_id, tag, seq, status, buf, len),
+
+       TP_STRUCT__entry(
+               __field(u8, protocol_id)
+               __field(u8, msg_id)
+               __array(char, tag, 5)
+               __field(u16, seq)
+               __field(int, status)
+               __field(size_t, len)
+               __dynamic_array(unsigned char, cmd, len)
+       ),
+
+       TP_fast_assign(
+               __entry->protocol_id = protocol_id;
+               __entry->msg_id = msg_id;
+               strscpy(__entry->tag, tag, 5);
+               __entry->seq = seq;
+               __entry->status = status;
+               __entry->len = len;
+               memcpy(__get_dynamic_array(cmd), buf, __entry->len);
+       ),
+
+       TP_printk("pt=%02X t=%s msg_id=%02X seq=%04X s=%d pyld=%s",
+                 __entry->protocol_id, __entry->tag, __entry->msg_id,
+                 __entry->seq, __entry->status,
+               __print_hex_str(__get_dynamic_array(cmd), __entry->len))
+);
 #endif /* _TRACE_SCMI_H */
 
 /* This part must be outside protection */