From 60d20a5002c9e1df8c8720b8335f62e7158ad78b Mon Sep 17 00:00:00 2001 From: Jeremy Kerr Date: Fri, 26 May 2017 12:54:30 +1000 Subject: prd: Implement firmware side of opaque PRD channel This change introduces the firmware side of the opaque HBRT <--> OPAL message channel. We define a base message format to be shared with HBRT (in include/prd-fw-msg.h), and allow firmware requests and responses to be sent over this channel. We don't currently have any notifications defined, so have nothing to do for firmware_notify() at this stage. Signed-off-by: Jeremy Kerr CC: Daniel M Crowell Signed-off-by: Stewart Smith --- include/prd-fw-msg.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 include/prd-fw-msg.h (limited to 'include/prd-fw-msg.h') diff --git a/include/prd-fw-msg.h b/include/prd-fw-msg.h new file mode 100644 index 00000000..c00405dd --- /dev/null +++ b/include/prd-fw-msg.h @@ -0,0 +1,37 @@ +/* Copyright 2017 IBM Corp. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + * implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + +#ifndef __PRD_FW_MSG_H +#define __PRD_FW_MSG_H + +#include + +/* Messaging structure for the opaque channel between OPAL and HBRT. This + * format is used for the firmware_request and firmware_notify interfaces + */ +enum { + PRD_FW_MSG_TYPE_REQ_NOP = 0, + PRD_FW_MSG_TYPE_RESP_NOP = 1, +}; + +struct prd_fw_msg { + __be64 type; +}; + +#define PRD_FW_MSG_BASE_SIZE sizeof(__be64) + +#endif /* __PRD_FW_MSG_H */ -- cgit v1.2.1