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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/initservice/istepdispatcher/splesscommon.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2012,2016 */
/* [+] 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 splesscommon.C
*
* Routines to access SPLESS Command and
* and SPLESS Status interfaces
*
* Currently SPLess only supports the one command 0x00, this rewrite will
* allow support of other SPLess commands.
*
*/
/******************************************************************************/
// Includes
/******************************************************************************/
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <initservice/mboxRegs.H>
// $$$$$$$ undefine this before checking in....
//#define SPLESS_DEBUG 1
#ifdef SPLESS_DEBUG
#include <kernel/console.H> // printk DEBUG
#endif
#include <sys/mmio.h> // mmio_scratch_read()
#include <devicefw/userif.H> // deviceRead(), deviceWrite()
#include <errl/errlentry.H>
#include <targeting/common/attributes.H> // ISTEP_MODE attribute
#include <targeting/common/targetservice.H>
#include "splesscommon.H"
#include <config.h>
#include <initservice/bootconfigif.H>
#include <errl/errlmanager.H>
// external reference
namespace INITSERVICE
{
extern trace_desc_t *g_trac_initsvc;
namespace SPLESS
{
using namespace TARGETING;
// extern declarations for regs.
/**
* @def g_SPLess_pMasterProcChip
*
* pointer to master proc chip used for deviceRead deviceWrite
*/
TARGETING::Target* g_SPLess_pMasterProcChip = NULL;
/******************************************************************************/
// SPLESS support functions
/******************************************************************************/
/******************************************************************************/
// SPLESS Command functions
/******************************************************************************/
void readCmdSts( SPLessCmd &io_rcmd )
{
// Do this once and save it...
if ( g_SPLess_pMasterProcChip == NULL )
{
(void)TARGETING::targetService().masterProcChipTargetHandle(
g_SPLess_pMasterProcChip );
}
#ifdef CONFIG_SIO_ISTEP_CONTROL
errlHndl_t err = NULL;
INITSERVICE::BOOTCONFIG::istepControl_t istepCtl;
memset (&istepCtl, 0x0, sizeof(istepCtl));
err = INITSERVICE::BOOTCONFIG::readIstepControl(istepCtl);
if(err)
{
TRACFCOMP( g_trac_initsvc, "Error reading SIO regs... blindly continuing" );
errlCommit(err, INITSVC_COMP_ID);
}
else
{
io_rcmd.bytes[HDR] = istepCtl.istepControl;
io_rcmd.bytes[STS] = istepCtl.istepStatus;
io_rcmd.istep = istepCtl.istepMajorNumber;
io_rcmd.substep = istepCtl.istepMinorNumber;
}
#else
// $$ save -io_rcmd.val64 = mmio_scratch_read(MMIO_SCRATCH_IPLSTEP_COMMAND);
// command reg is GMB2EC is mailbox scratchpad 3 { regs 0 - 3 }.
size_t op_size = sizeof( uint64_t );
uint64_t op = 0x0;
DeviceFW::deviceRead(
g_SPLess_pMasterProcChip,
&(op),
op_size,
DEVICE_SCOM_ADDRESS( MBOX_SCRATCH_REG4 ) );
io_rcmd.word = (op >>32);
#endif
#ifdef SPLESS_DEBUG
printk( "readCmd 0x%x\n", io_rcmd.word );
#endif
}
void writeCmdSts( SPLessCmd i_rcmd )
{
// Do this once and save it...
if ( g_SPLess_pMasterProcChip == NULL )
{
(void)TARGETING::targetService().masterProcChipTargetHandle(
g_SPLess_pMasterProcChip );
}
#ifdef CONFIG_SIO_ISTEP_CONTROL
errlHndl_t err = NULL;
INITSERVICE::BOOTCONFIG::istepControl_t istepCtl;
memset (&istepCtl, 0x0, sizeof(istepCtl));
istepCtl.istepControl = i_rcmd.bytes[HDR];
istepCtl.istepStatus = i_rcmd.bytes[STS];
TRACFCOMP( g_trac_initsvc, "Write istep control" );
err = BOOTCONFIG::writeIstepControl(istepCtl);
if(err)
{
TRACFCOMP( g_trac_initsvc, "Error writing SIO regs... blindly continuing" );
errlCommit(err, INITSVC_COMP_ID);
}
#else
// save mmio_scratch_write( MMIO_SCRATCH_IPLSTEP_COMMAND, i_rcmd.val64 );
// command reg is GMB2EC is mailbox scratchpad 3 { regs 0 - 3 }.
size_t op_size = sizeof( uint64_t );
uint64_t op = (static_cast<uint64_t>(i_rcmd.word))<<32;
DeviceFW::deviceWrite(
g_SPLess_pMasterProcChip,
&(op),
op_size,
DEVICE_SCOM_ADDRESS( MBOX_SCRATCH_REG4 ) );
#endif
#ifdef SPLESS_DEBUG
printk( "writeCmd 0x%x\n", i_rcmd.word );
#endif
}
}; // namespace
}; // end namespace INITSERVICE
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