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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/include/runtime/hbrt_utilities.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2017,2018 */
/* [+] International Business Machines 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. */
/* */
/* IBM_PROLOG_END_TAG */
#ifndef __RUNTIME__UTILITIES_H
#define __RUNTIME__UTILITIES_H
#ifndef __HOSTBOOT_RUNTIME_INTERFACE_VERSION_ONLY
#include "interface.h"
/** @file hbrt_utilities.H
* @brief A file to put HBRT Interface utilities
*
* This file contains utilities that facilitate
* the usage of the HBRT Interface
*/
/**
* @brief A handy utility to create the firmware request and response
* messages, for FSP, where the messages must be of equal size.
*
* @par Detailed Description
* This method will take the size of the Generic FSP Message
* payload, the data to populate GenericFspMboxMessage_t::data,
* and calculate the size requirements for both request and
* response messages.
*
* @pre The input payload size is of reasonable length and the
* request/response messages are at most set to nullptr or at
* least do not point to valid objects (they will be assigned
* to newly created data.)
*
* @post The request/response messages point to a valid struct,
* the request/response message size are equal to each other
* and contain the size of the request/response messages
* respectively upon a successful call else all the output
* parameters will either be NULL or 0 based on type.
*
* @note Use this function iff hbrt_fw_msg::io_type is of type
* HBRT_FW_MSG_HBRT_FSP_REQ.
*
* @note Caller is responsible for deleting (use delete []) the
* allocated memory
*
* @param[in] i_fspReqPayloadSize The size of the payload that will
* populate GenericFspMboxMessage_t::data
* @param[out] o_fspMsgSize Return the size of the
* GenericFspMboxMessage_t, adjusted to
* accommodate input payload
* @param[out] o_requestMsgSize The size of the hbrt_fw_msg request msg
* @param[out] o_requestMsg The allocated request message (not NULL)
* @param[out] o_responseMsgSize The size of the hbrt_fw_msg respone msg,
* will be equal to the request msg size
* @param[out] o_responseMsg The allocated response message (not
* NULL), zeroed out
*/
void createGenericFspMsg(uint32_t i_fspReqPayloadSize,
uint32_t &o_fspMsgSize,
uint64_t &o_requestMsgSize,
hostInterfaces::hbrt_fw_msg* &o_requestMsg,
uint64_t &o_responseMsgSize,
hostInterfaces::hbrt_fw_msg* &o_responseMsg)
{
// Do some quick initialization of the output data
o_fspMsgSize = o_requestMsgSize = o_responseMsgSize = 0;
o_requestMsg = o_responseMsg = nullptr;
// Calculate the total size of the Generic FSP Message.
o_fspMsgSize = GENERIC_FSP_MBOX_MESSAGE_BASE_SIZE +
i_fspReqPayloadSize;
// The total Generic FSP Message size must be at a minimum the
// size of the FSP generic message (sizeof(GenericFspMboxMessage_t))
if (o_fspMsgSize < sizeof(GenericFspMboxMessage_t))
{
o_fspMsgSize = sizeof(GenericFspMboxMessage_t);
}
// Calculate the total size of the hbrt_fw_msgs which
// means only adding hostInterfaces::HBRT_FW_MSG_BASE_SIZE to
// the previous calculated Generic FSP Message size.
o_requestMsgSize = o_responseMsgSize =
hostInterfaces::HBRT_FW_MSG_BASE_SIZE + o_fspMsgSize;
// Create the hbrt_fw_msgs
o_responseMsg = reinterpret_cast<hostInterfaces::hbrt_fw_msg *>
(new uint8_t[o_responseMsgSize]);
o_requestMsg = reinterpret_cast<hostInterfaces::hbrt_fw_msg *>
(new uint8_t[o_requestMsgSize]);
// If anyone of these two message's memory can't be allocated, then
// delete both messages (in case one did allocate memory), set both
// messages to NULL pointers and set their respective sizes to zero.
if (!o_responseMsg || !o_requestMsg)
{
// OK to delete a NULL pointer if it happens
delete []o_responseMsg;
delete []o_requestMsg;
// Return output data zeroed out
o_responseMsg = o_requestMsg = nullptr;
o_fspMsgSize = o_requestMsgSize = o_responseMsgSize = 0;
}
else
{
// Initialize/zero out hbrt_fw_msgs
o_requestMsg->generic_msg.initialize();
memset(o_responseMsg, 0, o_responseMsgSize);
// We can at least set these parameters based on current usage
o_requestMsg->io_type = hostInterfaces::HBRT_FW_MSG_HBRT_FSP_REQ;
o_requestMsg->generic_msg.dataSize = o_fspMsgSize;
o_requestMsg->generic_msg.__req = GenericFspMboxMessage_t::REQUEST;
}
} // end createGenericFspMsg
#endif //__HOSTBOOT_RUNTIME_INTERFACE_VERSION_ONLY
#endif // __RUNTIME__UTILITIES_H
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