SPMD: introduce SPMC to SPMD messages
FF-A interface to handle SPMC to SPMD direct messages requests.
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Signed-off-by: Max Shvetsov <maksims.svecovs@arm.com>
Change-Id: Ia707a308c55561a31dcfa86e554ea1c9e23f862a
diff --git a/include/services/ffa_svc.h b/include/services/ffa_svc.h
index 7285077..0513eab 100644
--- a/include/services/ffa_svc.h
+++ b/include/services/ffa_svc.h
@@ -138,4 +138,43 @@
*/
#define FFA_PARAM_MBZ U(0x0)
+/*
+ * Maximum FF-A endpoint id value
+ */
+#define FFA_ENDPOINT_ID_MAX U(1 << 16)
+
+/*
+ * Mask for source and destination endpoint id in
+ * a direct message request/response.
+ */
+#define FFA_DIRECT_MSG_ENDPOINT_ID_MASK U(0xffff)
+
+/*
+ * Bit shift for destination endpoint id in a direct message request/response.
+ */
+#define FFA_DIRECT_MSG_DESTINATION_SHIFT U(0)
+
+/*
+ * Bit shift for source endpoint id in a direct message request/response.
+ */
+#define FFA_DIRECT_MSG_SOURCE_SHIFT U(16)
+
+/******************************************************************************
+ * ffa_endpoint_destination
+ *****************************************************************************/
+static inline uint16_t ffa_endpoint_destination(unsigned int ep)
+{
+ return (ep >> FFA_DIRECT_MSG_DESTINATION_SHIFT) &
+ FFA_DIRECT_MSG_ENDPOINT_ID_MASK;
+}
+
+/******************************************************************************
+ * ffa_endpoint_source
+ *****************************************************************************/
+static inline uint16_t ffa_endpoint_source(unsigned int ep)
+{
+ return (ep >> FFA_DIRECT_MSG_SOURCE_SHIFT) &
+ FFA_DIRECT_MSG_ENDPOINT_ID_MASK;
+}
+
#endif /* FFA_SVC_H */