Introduce ZynqMP IPI implementation
Previously, ZynqMP IPI in ATF is only for ZynqMP PM,
This patch is to have a ZynqMP IPI implementation to handle
both ZynqMP PM IPI requirement and IPI mailbox service requirement
which will be introduced next.
We control IPI agents registers access but not IPI buffers access in
this implementation. Each IPI mailbox user will directly access the
IPI buffers.
Signed-off-by: Wendy Liang <jliang@xilinx.com>
diff --git a/plat/xilinx/zynqmp/zynqmp_ipi.h b/plat/xilinx/zynqmp/zynqmp_ipi.h
new file mode 100644
index 0000000..0544ddb
--- /dev/null
+++ b/plat/xilinx/zynqmp/zynqmp_ipi.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/* ZynqMP IPI management enums and defines */
+
+#ifndef _ZYNQMP_IPI_H_
+#define _ZYNQMP_IPI_H_
+
+#include <stdint.h>
+
+/*********************************************************************
+ * IPI agent IDs macros
+ ********************************************************************/
+#define IPI_ID_APU 0U
+#define IPI_ID_RPU0 1U
+#define IPI_ID_RPU1 2U
+#define IPI_ID_PMU0 3U
+#define IPI_ID_PMU1 4U
+#define IPI_ID_PMU2 5U
+#define IPI_ID_PMU3 6U
+#define IPI_ID_PL0 7U
+#define IPI_ID_PL1 8U
+#define IPI_ID_PL2 9U
+#define IPI_ID_PL3 10U
+
+/*********************************************************************
+ * IPI mailbox status macros
+ ********************************************************************/
+#define IPI_MB_STATUS_IDLE 0
+#define IPI_MB_STATUS_SEND_PENDING 1
+#define IPI_MB_STATUS_RECV_PENDING 2
+
+/*********************************************************************
+ * IPI mailbox call is secure or not macros
+ ********************************************************************/
+#define IPI_MB_CALL_NOTSECURE 0
+#define IPI_MB_CALL_SECURE 1
+
+/*********************************************************************
+ * IPI APIs declarations
+ ********************************************************************/
+
+/* Validate IPI mailbox access */
+int ipi_mb_validate(uint32_t local, uint32_t remote, unsigned int is_secure);
+
+/* Open the IPI mailbox */
+void ipi_mb_open(uint32_t local, uint32_t remote);
+
+/* Release the IPI mailbox */
+void ipi_mb_release(uint32_t local, uint32_t remote);
+
+/* Enquire IPI mailbox status */
+int ipi_mb_enquire_status(uint32_t local, uint32_t remote);
+
+/* Trigger notification on the IPI mailbox */
+void ipi_mb_notify(uint32_t local, uint32_t remote, uint32_t is_blocking);
+
+/* Ack IPI mailbox notification */
+void ipi_mb_ack(uint32_t local, uint32_t remote);
+
+/* Disable IPI mailbox notification interrupt */
+void ipi_mb_disable_irq(uint32_t local, uint32_t remote);
+
+/* Enable IPI mailbox notification interrupt */
+void ipi_mb_enable_irq(uint32_t local, uint32_t remote);
+
+#endif /* _ZYNQMP_IPI_H_ */