target: add API to temporarily mask target polling

[openocd.git] / src / jtag / core.c

diff --git a/src/jtag/core.c b/src/jtag/core.c
index 27c7b3de493206a81d6384eaaa722195934634db..806ee892657bd0d61ce326630362044b5dab67bd 100644 (file)
--- a/src/jtag/core.c
+++ b/src/jtag/core.c
@@ -136,14 +136,19 @@ int jtag_error_clear(void)
 
 /************/
 
-static bool jtag_poll = 1;
+static bool jtag_poll = true;
+static bool jtag_poll_en = true;
 
 bool is_jtag_poll_safe(void)
 {
        /* Polling can be disabled explicitly with set_enabled(false).
+        * It can also be masked with mask().
         * It is also implicitly disabled while TRST is active and
         * while SRST is gating the JTAG clock.
         */
+       if (!jtag_poll_en)
+               return false;
+
        if (!transport_is_jtag())
                return jtag_poll;
 
@@ -162,6 +167,18 @@ void jtag_poll_set_enabled(bool value)
        jtag_poll = value;
 }
 
+bool jtag_poll_mask(void)
+{
+       bool retval = jtag_poll_en;
+       jtag_poll_en = false;
+       return retval;
+}
+
+void jtag_poll_unmask(bool saved)
+{
+       jtag_poll_en = saved;
+}
+
 /************/
 
 struct jtag_tap *jtag_all_taps(void)