1 files changed, 93 insertions, 0 deletions
diff --git a/kernel/ethosu_core_interface.h b/kernel/ethosu_core_interface.h
new file mode 100644
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+++ b/kernel/ethosu_core_interface.h
@@ -0,0 +1,93 @@
+/*
+ * (C) COPYRIGHT 2020 ARM Limited. All rights reserved.
+ *
+ * This program is free software and is provided to you under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms
+ * of such GNU licence.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you can access it online at
+ * http://www.gnu.org/licenses/gpl-2.0.html.
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ */
+
+#ifndef ETHOSU_CORE_INTERFACE_H
+#define ETHOSU_CORE_INTERFACE_H
+
+#ifdef __KERNEL__
+#include <linux/types.h>
+#else
+#include <stdint.h>
+#endif
+
+/**
+ * enum ethosu_core_msg_type - Message types
+ *
+ * Types for the messages sent between the host and the core subsystem.
+ */
+enum ethosu_core_msg_type {
+	ETHOSU_CORE_MSG_PING = 1,
+	ETHOSU_CORE_MSG_PONG,
+	ETHOSU_CORE_MSG_INFERENCE_REQ,
+	ETHOSU_CORE_MSG_INFERENCE_RSP,
+	ETHOSU_CORE_MSG_MAX
+};
+
+/**
+ * struct ethosu_core_msg - Message header
+ */
+struct ethosu_core_msg {
+	uint32_t type;
+	uint32_t length;
+};
+
+/**
+ * struct ethosu_core_queue_header - Message queue header
+ */
+struct ethosu_core_queue_header {
+	uint32_t size;
+	uint32_t read;
+	uint32_t write;
+};
+
+/**
+ * struct ethosu_core_queue - Message queue
+ *
+ * Dynamically sized message queue.
+ */
+struct ethosu_core_queue {
+	struct ethosu_core_queue_header header;
+	uint8_t                         data[];
+};
+
+enum ethosu_core_status {
+	ETHOSU_CORE_STATUS_OK,
+	ETHOSU_CORE_STATUS_ERROR
+};
+
+struct ethosu_core_buffer {
+	uint32_t ptr;
+	uint32_t size;
+};
+
+struct ethosu_core_inference_req {
+	uint64_t                  user_arg;
+	struct ethosu_core_buffer ifm;
+	struct ethosu_core_buffer ofm;
+	struct ethosu_core_buffer network;
+};
+
+struct ethosu_core_inference_rsp {
+	uint64_t user_arg;
+	uint32_t ofm_size;
+	uint32_t status;
+};
+
+#endif