target_request: add target_got_message() that can be used to improve DCC performance

[fw/openocd] / src / target / target_request.c

diff --git a/src/target/target_request.c b/src/target/target_request.c
index 9e78178a3247fce95637c1ae259c87f4c0106407..3cdca5e189c4a93159d8691cb25b4e057cc6522a 100644 (file)
--- a/src/target/target_request.c
+++ b/src/target/target_request.c
@@ -27,14 +27,24 @@
 #include "config.h"
 #endif
 
+#include <helper/log.h>
+#include <helper/binarybuffer.h>
+
 #include "target.h"
 #include "target_request.h"
 #include "target_type.h"
-#include "binarybuffer.h"
 #include "trace.h"
-#include "log.h"
 
 
+static bool got_message = false;
+
+bool target_got_message(void)
+{
+       bool t = got_message;
+       got_message = false;
+       return t;
+}
+
 static int charmsg_mode = 0;
 
 static int target_asciimsg(struct target *target, uint32_t length)
@@ -117,6 +127,9 @@ int target_request(struct target *target, uint32_t request)
 {
        target_req_cmd_t target_req_cmd = request & 0xff;
 
+       /* Record that we got a target message for back-off algorithm */
+       got_message = true;
+
        if (charmsg_mode) {
                target_charmsg(target, target_req_cmd);
                return ERROR_OK;
@@ -302,10 +315,10 @@ COMMAND_HANDLER(handle_target_request_debugmsgs_command)
 static const struct command_registration target_req_exec_command_handlers[] = {
        {
                .name = "debugmsgs",
-               .handler = &handle_target_request_debugmsgs_command,
+               .handler = handle_target_request_debugmsgs_command,
                .mode = COMMAND_EXEC,
-               .help = "set reception of debug messages from target",
-               .usage = "(enable|disable)",
+               .help = "display and/or modify reception of debug messages from target",
+               .usage = "['enable'|'charmsg'|'disable']",
        },
        COMMAND_REGISTRATION_DONE
 };