From 80c20a186b49b30575bc9a1e1316ab0acf502512 Mon Sep 17 00:00:00 2001 From: =?utf8?q?=C3=98yvind=20Harboe?= Date: Fri, 14 Oct 2011 14:55:17 +0200 Subject: [PATCH] target_request: add target_got_message() that can be used to improve DCC performance MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit API change to allow implementing a back-off algorithm for polling hardware. Change-Id: I6cbe8b4534c8dfeb8442305171ea96b5481c1f17 Signed-off-by: Øyvind Harboe Reviewed-on: http://openocd.zylin.com/26 Reviewed-by: Øyvind Harboe Tested-by: Øyvind Harboe --- src/target/target_request.c | 12 ++++++++++++ src/target/target_request.h | 7 +++++++ 2 files changed, 19 insertions(+) diff --git a/src/target/target_request.c b/src/target/target_request.c index ec3d48e26..3cdca5e18 100644 --- a/src/target/target_request.c +++ b/src/target/target_request.c @@ -36,6 +36,15 @@ #include "trace.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) @@ -118,6 +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; diff --git a/src/target/target_request.h b/src/target/target_request.h index e50c425e0..740645ed7 100644 --- a/src/target/target_request.h +++ b/src/target/target_request.h @@ -47,5 +47,12 @@ int target_request(struct target *target, uint32_t request); int delete_debug_msg_receiver(struct command_context *cmd_ctx, struct target *target); int target_request_register_commands(struct command_context *cmd_ctx); +/** + * Read and clear the flag as to whether we got a message. + * + * This is used to implement the back-off algorithm on + * sleeping in idle mode. + */ +bool target_got_message(void); #endif /* TARGET_REQUEST_H */ -- 2.30.2