ti: k3: drivers: Add Secure Proxy driver
Secure Proxy module manages hardware threads that are meant
for communication between the processor entities. Add support
for this here.
Signed-off-by: Andrew F. Davis <afd@ti.com>
diff --git a/plat/ti/k3/common/drivers/sec_proxy/sec_proxy.h b/plat/ti/k3/common/drivers/sec_proxy/sec_proxy.h
new file mode 100644
index 0000000..facfd19
--- /dev/null
+++ b/plat/ti/k3/common/drivers/sec_proxy/sec_proxy.h
@@ -0,0 +1,58 @@
+/*
+ * Texas Instruments K3 Secure Proxy Driver
+ * Based on Linux and U-Boot implementation
+ *
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef K3_SEC_PROXY_H
+#define K3_SEC_PROXY_H
+
+#include <stdint.h>
+
+/**
+ * enum k3_sec_proxy_chan_id - Secure Proxy thread IDs
+ *
+ * These the available IDs used in k3_sec_proxy_{send,recv}()
+ */
+enum k3_sec_proxy_chan_id {
+ SP_NOTIFY = 0,
+ SP_RESPONSE,
+ SP_HIGH_PRIORITY,
+ SP_LOW_PRIORITY,
+ SP_NOTIFY_RESP,
+};
+
+/**
+ * struct k3_sec_proxy_msg - Secure proxy message structure
+ * @len: Length of data in the Buffer
+ * @buf: Buffer pointer
+ *
+ * This is the structure for data used in k3_sec_proxy_{send,recv}()
+ */
+struct k3_sec_proxy_msg {
+ size_t len;
+ uint8_t *buf;
+};
+
+/**
+ * k3_sec_proxy_send() - Send data over a Secure Proxy thread
+ * @id: Channel Identifier
+ * @msg: Pointer to k3_sec_proxy_msg
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int k3_sec_proxy_send(enum k3_sec_proxy_chan_id id, const struct k3_sec_proxy_msg *msg);
+
+/**
+ * k3_sec_proxy_recv() - Receive data from a Secure Proxy thread
+ * @id: Channel Identifier
+ * @msg: Pointer to k3_sec_proxy_msg
+ *
+ * Return: 0 if all goes well, else appropriate error message
+ */
+int k3_sec_proxy_recv(enum k3_sec_proxy_chan_id id, struct k3_sec_proxy_msg *msg);
+
+#endif /* K3_SEC_PROXY_H */