1 files changed, 47 insertions, 0 deletions
diff --git a/src/ec/google/wilco/ec.h b/src/ec/google/wilco/ec.h
new file mode 100644
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+++ b/src/ec/google/wilco/ec.h
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+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2018 Google LLC
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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.
+ */
+
+#ifndef EC_GOOGLE_WILCO_EC_H
+#define EC_GOOGLE_WILCO_EC_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+/* Different supported message types */
+enum wilco_ec_msg_type {
+	WILCO_EC_MSG_RAW,		/* Raw message, do not skip any data */
+	WILCO_EC_MSG_DEFAULT,		/* Skip 1 byte of response data */
+	WILCO_EC_MSG_NO_RESPONSE,	/* EC does not respond to command */
+};
+
+/**
+ * wilco_ec_mailbox
+ *
+ * Send a command request to the EC mailbox and receive the response.
+ *
+ * @type:          Mailbox message type, see enum above
+ * @command:       Command to execute
+ * @request_data:  Request data buffer
+ * @request_size:  Number of bytes in request data buffer (max 32)
+ * @response_data: Response data buffer
+ * @response_size: Number of bytes in response data buffer (max 32)
+ *
+ * @return number of bytes received, negative error code on failure
+ */
+int wilco_ec_mailbox(enum wilco_ec_msg_type type, uint8_t command,
+		     const void *request_data, size_t request_size,
+		     void *response_data, size_t response_size);
+
+#endif /* EC_GOOGLE_WILCO_EC_H */