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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/util/utilmbox_scratch.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2016 */
/* [+] 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 */
/**
* @file utilmem.C
*
* @brief Stream manipulation
*
* Used for creating and manipulating streams
*/
/*****************************************************************************/
// I n c l u d e s
/*****************************************************************************/
#include <limits.h>
#include <util/util_reasoncodes.H>
#include <errl/errlentry.H>
#include <errl/errlmanager.H>
#include <devicefw/userif.H>
#include <sys/task.h>
#include <util/utilmbox_scratch.H>
#include "utilbase.H"
using namespace ERRORLOG;
namespace Util
{
// ----------------------------------------------
// Globals
// ----------------------------------------------
mutex_t g_mutex = MUTEX_INITIALIZER;
uint64_t readScratchReg(uint64_t i_addr)
{
size_t l_size = sizeof(uint64_t);
uint64_t value = 0;
errlHndl_t l_errl =
deviceRead(TARGETING::MASTER_PROCESSOR_CHIP_TARGET_SENTINEL,
&value, l_size,
DEVICE_SCOM_ADDRESS(i_addr));
if (l_errl)
{
errlCommit(l_errl, UTIL_COMP_ID);
}
return value;
}
void writeScratchReg(uint64_t i_addr, uint64_t i_data)
{
size_t l_size = sizeof(uint64_t);
errlHndl_t l_errl =
deviceWrite(TARGETING::MASTER_PROCESSOR_CHIP_TARGET_SENTINEL,
&i_data, l_size,
DEVICE_SCOM_ADDRESS(i_addr));
if (l_errl)
{
errlCommit(l_errl, UTIL_COMP_ID);
}
}
void writeDebugCommRegs(uint8_t i_usage, uint32_t i_addr, uint32_t i_size)
{
//convert input into uint64_t for scom write
uint64_t l_bufAddr = i_addr;
uint64_t l_bufSize = (i_size & MSG_DATA_SIZE_MASK) |
(i_usage << MSG_USAGE_SHIFT);
l_bufAddr <<=32;
l_bufSize <<=32;
//Lock to prevent concurrent access
mutex_lock(&g_mutex);
//Write out the data to be xferred to debug tool
writeScratchReg(INITSERVICE::SPLESS::MBOX_SCRATCH_REG1, l_bufAddr);
writeScratchReg(INITSERVICE::SPLESS::MBOX_SCRATCH_REG2, l_bufSize);
//wait paitently until tool has gotten the data
//tool will zero addr when ready to continue
while(0 != readScratchReg(INITSERVICE::SPLESS::MBOX_SCRATCH_REG1))
{
task_yield();
}
//Release lock
mutex_unlock(&g_mutex);
}
};
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