1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/staging/nmf-cm/share/semaphores/inc/semaphores.h b/drivers/staging/nmf-cm/share/semaphores/inc/semaphores.h
new file mode 100644
index 00000000000..c72b64cd709
--- /dev/null
+++ b/drivers/staging/nmf-cm/share/semaphores/inc/semaphores.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010. All rights reserved.
+ * This code is ST-Ericsson proprietary and confidential.
+ * Any use of the code for whatever purpose is subject to
+ * specific written permission of ST-Ericsson SA.
+ */
+ 
+#ifndef __INC_SHARED_SEMAPHORE_H
+#define __INC_SHARED_SEMAPHORE_H
+
+#include <share/inc/nmf.h>
+
+typedef t_uint16 t_semaphore_id;
+
+/*
+ * HW semaphore allocation
+ * -----------------------
+ *  We want to optimize interrupt demultiplexing at dsp interrupt handler level
+ *  so a good solution would be to have sequentially the semaphores for each neighbors
+ *
+ * STn8500 :
+ * ---------
+ * ARM <- SVA  COMS => 0
+ * ARM <- SIA  COMS => 1
+ * SVA <- ARM  COMS => 2
+ * SVA <- SIA  COMS => 3
+ * SIA <- ARM  COMS => 4
+ * SIA <- SVA  COMS => 5
+
+ * The first neighbor is always the ARM, then the other ones (SVA,SIA)
+ */
+
+/*
+ * Local semaphore allocation
+ * -----------------------
+ * 0 : ARM <- DSP
+ * 1 : DSP <- ARM
+ */
+
+#define NB_USED_HSEM_PER_CORE (NB_CORE_IDS - 1)
+#define FIRST_NEIGHBOR_SEMID(coreId) ((coreId)*NB_USED_HSEM_PER_CORE)
+
+#endif /* __INC_SHARED_SEMAPHORE_H */