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|
/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/secureboot/node_comm/node_comm_transfer.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2019 */
/* [+] 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 */
// ----------------------------------------------
// Includes
// ----------------------------------------------
#include <config.h>
#include <time.h>
#include <devicefw/userif.H>
#include <trace/interface.H>
#include <scom/centaurScomCache.H> // for TRACE_ERR_FMT, TRACE_ERR_ARGS
#include <secureboot/nodecommif.H>
#include "node_comm.H"
#include "node_comm_transfer.H"
// ----------------------------------------------
// Defines
// ----------------------------------------------
namespace SECUREBOOT
{
namespace NODECOMM
{
errlHndl_t nodeCommTransferSend(TARGETING::Target* i_pProc,
const uint8_t i_linkId,
const uint8_t i_mboxId,
node_comm_transfer_types_t i_transferType,
const uint8_t * i_data,
const size_t i_dataSize)
{
errlHndl_t err = nullptr;
// Determine how many messages need to be sent:
// msg sequence 0: Initiation Message
// msg sequence 1..N: 8-byte data messages
size_t msg_seq = 0;
size_t total_data_msgs = (i_dataSize + (sizeof(uint64_t)-1))
/sizeof(uint64_t);
TRACFCOMP(g_trac_nc,ENTER_MRK"nodeCommTransferSend: iProc=0x%.08X "
"to send %d bytes of data through linkId=%d mboxId=%d over "
"%d data messages",
get_huid(i_pProc), i_dataSize, i_linkId, i_mboxId, total_data_msgs);
do
{
// Keep track of data sent
size_t bytes_sent = 0;
size_t bytes_left = i_dataSize;
// Loop of sending messages (initiation and data) and receiving ACKs
for ( ; msg_seq <= total_data_msgs; ++msg_seq)
{
TRACUCOMP(g_trac_nc,INFO_MRK"nodeCommTransferSend: loop start: "
"seq = %d (msg %d of %d)",
msg_seq, msg_seq+1, total_data_msgs);
uint64_t data = 0;
if (msg_seq==0)
{
// Send Initiaion Message
node_comm_msg_format_t send_msg;
send_msg.value = 0; // Clear out the data
// @TODO RTC 203642 Fix sendingNode and recving Node
send_msg.sendingNode = 0;
send_msg.recvingNode = 1;
send_msg.msgType = i_transferType;
send_msg.msgSeqNum = msg_seq;
send_msg.totalDataMsgs = total_data_msgs;
send_msg.totalDataSize = i_dataSize;
data = send_msg.value;
}
else
{
// Send Data
// Write a max of 8 bytes at a time
size_t loop_data_length =
(bytes_left > sizeof(uint64_t)) ?
sizeof(uint64_t) :
bytes_left;
data=0;
memcpy(&data,
i_data + bytes_sent,
loop_data_length);
// Update amount of data left to be written
bytes_sent += loop_data_length;
bytes_left -= loop_data_length;
}
TRACDCOMP(g_trac_nc,INFO_MRK"nodeCommTransferSend: "
"msg %d: sending data=0x%.16llX (bytes_sent=%d, "
"bytes_left=%d)",
msg_seq, data, bytes_sent, bytes_left);
err = nodeCommAbusSendMessage(i_pProc,
data,
i_linkId,
i_mboxId);
if (err)
{
TRACFCOMP(g_trac_nc,ERR_MRK"nodeCommTransferSend: "
"nodeCommAbusSendMessage returned an error: "
"Tgt=0x%.08X, data=0x%.16llX, link=%d, mbox=%d: "
TRACE_ERR_FMT,
get_huid(i_pProc), data, i_linkId, i_mboxId,
TRACE_ERR_ARGS(err));
break;
}
// Get ACK
uint64_t data_recv = 0;
err = nodeCommAbusRecvMessage(i_pProc,
i_linkId,
i_mboxId,
data_recv);
if (err)
{
TRACFCOMP(g_trac_nc,ERR_MRK"nodeCommTransferSend: "
"nodeCommAbusRecvMessage returned an error: "
"Tgt=0x%.08X, data=0x%.16llX, link=%d, mbox=%d: "
TRACE_ERR_FMT,
get_huid(i_pProc), data, i_linkId, i_mboxId,
TRACE_ERR_ARGS(err));
break;
}
TRACDCOMP(g_trac_nc,INFO_MRK"nodeCommTransferSend: "
"msg %d: receiving ACK = 0x%.16llX",
msg_seq, data_recv);
// @TODO RTC 203642 Check that ACK is
// -- from the right node
// -- from right linkId/mboxId
// -- the right type of ACK
} // end of for-loop of messages
if (err)
{
break;
}
} while( 0 );
TRACFCOMP(g_trac_nc,EXIT_MRK"nodeCommTransferSend: "
TRACE_ERR_FMT,
TRACE_ERR_ARGS(err));
return err;
} // end of nodeCommTransferSend
errlHndl_t nodeCommTransferRecv(TARGETING::Target* i_pProc,
const uint8_t i_linkId,
const uint8_t i_mboxId,
node_comm_transfer_types_t i_transferType,
uint8_t*& o_data,
size_t & o_dataSize)
{
errlHndl_t err = nullptr;
TRACFCOMP(g_trac_nc,ENTER_MRK"nodeCommTransferRecv: i_pProc=0x%.08X "
"expecting messages of type 0x%.02x from linkId=%d mboxId=%d",
get_huid(i_pProc), i_transferType, i_linkId, i_mboxId);
// Clear the output variables to be safe
o_data = nullptr;
o_dataSize = 0;
do
{
// Wait for Message
uint64_t data_recv = 0;
err = nodeCommAbusRecvMessage(i_pProc,
i_linkId,
i_mboxId,
data_recv);
if (err)
{
TRACFCOMP(g_trac_nc,ERR_MRK"nodeCommTransferRecv: "
"nodeCommAbusRecvMessage returned an error: "
"Tgt=0x%.08X, data=0x%.16llX, link=%d, mbox=%d: "
TRACE_ERR_FMT,
get_huid(i_pProc), data_recv, i_linkId, i_mboxId,
TRACE_ERR_ARGS(err));
break;
}
node_comm_msg_format_t init_msg = {.value = data_recv};
TRACFCOMP(g_trac_nc,INFO_MRK"nodeCommTransferRecv: "
"Initiation Message 0x%.16llX: sN=%d, rN=%d, msgType=0x%X, "
"msgSeqNum=%d, totalDataMsgs=%d.totalDataSize=%d",
init_msg.value, init_msg.sendingNode, init_msg.recvingNode,
init_msg.msgType, init_msg.msgSeqNum, init_msg.totalDataMsgs,
init_msg.totalDataSize);
// @TODO RTC 203642 Add the following checks:
// - check nodes
// - init_msg.msgSeqNum should be 0 for initiation message
// - check that expected transfer type is received
// Reply with ACK:
node_comm_msg_format_t ack_msg = {.value = 0};
ack_msg.value = 0;
// @TODO RTC 203642 Fix sending node Ids
// Always set these for ACK of Initiation:
ack_msg.msgSeqNum = 0;
ack_msg.msgType = NCT_ACK_OF_INTIATION;
// ACK total number of expected data messages
ack_msg.totalDataMsgs = init_msg.totalDataMsgs;
// Send ACK message
err = nodeCommAbusSendMessage(i_pProc,
ack_msg.value,
i_linkId,
i_mboxId);
if (err)
{
TRACFCOMP(g_trac_nc,ERR_MRK"nodeCommTransferRecv: "
"nodeCommAbusSendMessage returned an error: "
"Tgt=0x%.08X, data=0x%.16llX, link=%d, mbox=%d: "
TRACE_ERR_FMT,
get_huid(i_pProc), ack_msg.value, i_linkId, i_mboxId,
TRACE_ERR_ARGS(err));
break;
}
// msg sequence 0: Initiation Message
// msg sequence 1..N: 8-byte data messages
size_t msg_seq = 1;
size_t total_data_msgs = init_msg.totalDataMsgs;
// Keep track of data read
size_t bytes_read = 0;
size_t bytes_left = init_msg.totalDataSize;
// Create output buffer to store the data
uint8_t * data_buffer = reinterpret_cast<uint8_t*>
(malloc(init_msg.totalDataSize));
// Loop of receiving data messages and sending ACKs
for ( ; msg_seq <= total_data_msgs; ++msg_seq)
{
// Wait for Data Message
data_recv = 0;
err = nodeCommAbusRecvMessage(i_pProc,
i_linkId,
i_mboxId,
data_recv);
if (err)
{
TRACFCOMP(g_trac_nc,ERR_MRK"nodeCommTransferRecv: "
"nodeCommAbusRecvMessage returned an error: "
"Tgt=0x%.08X, data=0x%.16llX, link=%d, mbox=%d: "
TRACE_ERR_FMT,
get_huid(i_pProc), data_recv, i_linkId, i_mboxId,
TRACE_ERR_ARGS(err));
break;
}
TRACDCOMP(g_trac_nc,INFO_MRK"nodeCommTransferRecv: "
"Data Msg Recvd: %d: 0x%.16llX",
msg_seq, data_recv);
size_t loop_bytes_read = (bytes_left > sizeof(uint64_t)) ?
sizeof(uint64_t) :
bytes_left;
memcpy(data_buffer+bytes_read,
&data_recv,
loop_bytes_read);
data_recv=0; // clear for next loop
bytes_read += loop_bytes_read;
bytes_left -= loop_bytes_read;
// Send Data ACK
ack_msg.msgType = NCT_ACK_OF_DATA;
ack_msg.msgSeqNum = msg_seq;
ack_msg.totalDataSize = bytes_read;
TRACDCOMP(g_trac_nc,INFO_MRK"nodeCommTransferRecv: "
"Data Msg ACK: %d: 0x%.16llX (bytes_read=%d, "
"bytes_left=%d)",
msg_seq, ack_msg.value, bytes_read, bytes_left);
err = nodeCommAbusSendMessage(i_pProc,
ack_msg.value,
i_linkId,
i_mboxId);
if (err)
{
TRACFCOMP(g_trac_nc,ERR_MRK"nodeCommTransferRecv: "
"nodeCommAbusSendMessage returned an error: "
"Tgt=0x%.08X, data=0x%.16llX, link=%d, mbox=%d: "
TRACE_ERR_FMT,
get_huid(i_pProc), ack_msg.value, i_linkId, i_mboxId,
TRACE_ERR_ARGS(err));
break;
}
} // end of for-loop for receiving data messages
if (err)
{
free(data_buffer);
o_data=nullptr;
o_dataSize=0;
break;
}
else
{
o_data = data_buffer;
o_dataSize = init_msg.totalDataSize;
}
} while( 0 );
TRACFCOMP(g_trac_nc,EXIT_MRK"nodeCommTransferRecv: "
"o_data=%p, o_dataSize=%d. "
TRACE_ERR_FMT,
o_data, o_dataSize,
TRACE_ERR_ARGS(err));
return err;
} // end of nodeCommTransferRecv
} // end NODECOMM namespace
} // end SECUREBOOT namespace
|
