Add multiframe-level scheduler (mframe_sched.[ch])

This scheduler enables us to schedule repeating events that occur
every multiframe.  It e.g. includes definitions for BCCH and CCCH
reading.

The mframe_sched is layered on top of the tdma_sched.

2 files changed, 29 insertions, 0 deletions

diff --git a/src/target/firmware/include/layer1/mframe_sched.h b/src/target/firmware/include/layer1/mframe_sched.h
new file mode 100644
index 00000000..79b0be04
--- /dev/null
+++ b/src/target/firmware/include/layer1/mframe_sched.h
@@ -0,0 +1,26 @@
+
+#include <stdint.h>
+
+enum mframe_task {
+	MF_TASK_BCCH_NORM,
+	MF_TASK_BCCH_EXT,
+	MF_TASK_CCCH,
+	MF_TASK_CCCH_COMB,
+
+	MF_TASK_SDCCH4_0,
+	MF_TASK_SDCCH4_1,
+	MF_TASK_SDCCH4_2,
+	MF_TASK_SDCCH4_3,
+
+	MF_TASK_SDCCH8_0,
+	MF_TASK_SDCCH8_1,
+	MF_TASK_SDCCH8_2,
+	MF_TASK_SDCCH8_3,
+	MF_TASK_SDCCH8_4,
+	MF_TASK_SDCCH8_5,
+	MF_TASK_SDCCH8_6,
+	MF_TASK_SDCCH8_7,
+};
+
+/* Schedule mframe_sched_items according to current MF TASK list */
+void mframe_schedule(uint32_t task_bitmask);
diff --git a/src/target/firmware/include/layer1/sync.h b/src/target/firmware/include/layer1/sync.h
index 28eda42c..6462467a 100644
--- a/src/target/firmware/include/layer1/sync.h
+++ b/src/target/firmware/include/layer1/sync.h
@@ -22,6 +22,9 @@ struct l1s_state {
 	uint32_t	tpu_offset;
 
 	int		task;
+
+	/* bit-mask of multi-frame tasks that are currently active */
+	uint32_t	mf_tasks;
 };
 
 extern struct l1s_state l1s;