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|
// IBM_PROLOG_BEGIN_TAG
// This is an automatically generated prolog.
//
// $Source: src/usr/fsiscom/fsiscom.C $
//
// IBM CONFIDENTIAL
//
// COPYRIGHT International Business Machines Corp. 2011
//
// p1
//
// Object Code Only (OCO) source materials
// Licensed Internal Code Source Materials
// IBM HostBoot Licensed Internal Code
//
// The source code for this program is not published or other-
// wise divested of its trade secrets, irrespective of what has
// been deposited with the U.S. Copyright Office.
//
// Origin: 30
//
// IBM_PROLOG_END
/*****************************************************************************/
// I n c l u d e s
/*****************************************************************************/
#include <string.h>
#include <devicefw/driverif.H>
#include <trace/interface.H>
#include <errl/errlentry.H>
#include <errl/errlmanager.H>
#include <fsiscom/fsiscom_reasoncodes.H>
#include "fsiscom.H"
//Globals/Constants
// Trace definition
trace_desc_t* g_trac_fsiscom = NULL;
TRAC_INIT(&g_trac_fsiscom, "FSISCOM", 4096); //4K
// Easy macro replace for unit testing
//#define TRACUCOMP(args...) TRACFCOMP(args)
#define TRACUCOMP(args...)
namespace FSISCOM
{
union ioData6432
{
uint64_t data64;
struct {
uint32_t data32_0;
uint32_t data32_1;
};
};
//@fixme - not full tested due to simics instability. Will full test when
// enabling the scom test cases.
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
errlHndl_t fsiScomPerformOp(DeviceFW::OperationType i_opType,
TARGETING::Target* i_target,
void* io_buffer,
size_t& io_buflen,
int64_t i_accessType,
va_list i_args)
{
errlHndl_t l_err = NULL;
uint64_t l_scomAddr = va_arg(i_args,uint64_t);
ioData6432 scratchData;
uint32_t l_command = 0;
uint32_t l_status = 0;
bool need_unlock = false;
size_t op_size = sizeof(uint32_t);
mutex_t* l_mutex = NULL;
do{
if( io_buflen != sizeof(uint64_t) )
{
TRACFCOMP( g_trac_fsiscom, ERR_MRK "fsiScomPerformOp> Invalid data length : io_buflen=%d", io_buflen );
/*@
* @errortype
* @moduleid FSISCOM::MOD_FSISCOM_PERFORMOP
* @reasoncode FSISCOM::RC_INVALID_LENGTH
* @userdata1 SCOM Address
* @userdata2 Data Length
* @devdesc FSISCOM: fsiScomPerformOp> Invalid data length (!= 8 bytes)
*/
l_err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE,
FSISCOM::MOD_FSISCOM_PERFORMOP,
FSISCOM::RC_INVALID_LENGTH,
l_scomAddr,
TO_UINT64(io_buflen));
//@fixme: Need to callout target somehow. Need to decide how to callout target and where
// it should be done (this layer or somewhere higher in the call stack?)
break;
}
if( (l_scomAddr & 0xFFFFFFFF80000000) != 0)
{
TRACFCOMP( g_trac_fsiscom, ERR_MRK "fsiScomPerformOp> Address contains more than 31 bits : l_scomAddr=0x%.8x", l_scomAddr );
/*@
* @errortype
* @moduleid FSISCOM::MOD_FSISCOM_PERFORMOP
* @reasoncode FSISCOM::RC_INVALID_ADDRESS
* @userdata1 SCOM Address
* @userdata2 0
* @devdesc FSISCOM: fsiScomPerformOp> Address contains more than 31 bits.
*/
l_err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE,
FSISCOM::MOD_FSISCOM_PERFORMOP,
FSISCOM::RC_INVALID_ADDRESS,
l_scomAddr,
0);
//@fixme: Need to callout target somehow. Need to decide how to callout target and where
// it should be done (this layer or somewhere higher in the call stack?)
break;
}
l_command = static_cast<uint32_t>(l_scomAddr & 0x000000007FFFFFFF);
// use the chip-specific mutex attribute
l_mutex = i_target->getHbMutexAttr<TARGETING::ATTR_FSI_SCOM_MUTEX>();
if(i_opType == DeviceFW::WRITE)
{
memcpy(&(scratchData.data64), io_buffer, 8);
TRACUCOMP( g_trac_fsiscom, "fsiScomPerformOp> Write(l_scomAddr=0x%X, l_data0=0x%X, l_data1=0x%X)", l_scomAddr, scratchData.data32_0, scratchData.data32_1);
// atomic section >>
mutex_lock(l_mutex);
need_unlock = true;
//write bits 0-31 to data0
l_err = DeviceFW::deviceOp( DeviceFW::WRITE,
i_target,
&scratchData.data32_0,
op_size,
DEVICE_FSI_ADDRESS(DATA0_REG));
if(l_err)
{
break;
}
//write bits 32-63 to data1
l_err = DeviceFW::deviceOp( DeviceFW::WRITE,
i_target,
&scratchData.data32_1,
op_size,
DEVICE_FSI_ADDRESS(DATA1_REG));
if(l_err)
{
break;
}
//write to FSI2PIB command reg starts write operation
//bit 0 high => write command
l_command = 0x80000000 | l_command;
l_err = DeviceFW::deviceOp( DeviceFW::WRITE,
i_target,
&l_command,
op_size,
DEVICE_FSI_ADDRESS(COMMAND_REG));
if(l_err)
{
break;
}
//check status reg to see result
l_err = DeviceFW::deviceOp( DeviceFW::READ,
i_target,
&l_status,
op_size,
DEVICE_FSI_ADDRESS(STATUS_REG));
if(l_err)
{
break;
}
// atomic section <<
need_unlock = false;
mutex_unlock(l_mutex);
//bits 17-19 indicates PCB/PIB error
if(l_status & 0x00007000)
{
TRACFCOMP( g_trac_fsiscom, ERR_MRK"fsiScomPerformOp:Write: PCB/PIB error received: l_status=0x%X)", l_status);
/*@
* @errortype
* @moduleid FSISCOM::MOD_FSISCOM_PERFORMOP
* @reasoncode FSISCOM::RC_WRITE_ERROR
* @userdata1 SCOM Addr
* @userdata2 SCOM Status Reg
* @devdesc fsiScomPerformOp> Error returned from SCOM Engine after write
*/
l_err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE,
FSISCOM::MOD_FSISCOM_PERFORMOP,
FSISCOM::RC_WRITE_ERROR,
l_scomAddr,
TO_UINT64(l_status));
//@fixme: Need to callout target somehow. Need to decide how to callout target and where
// it should be done (this layer or somewhere higher in the call stack?)
//@todo: May add recover actions later. Currently undefined
break;
}
}
else if(i_opType == DeviceFW::READ)
{
TRACUCOMP( g_trac_fsiscom, "fsiScomPerformOp: Read(l_scomAddr=0x%.8X)", l_scomAddr);
// atomic section >>
mutex_lock(l_mutex);
need_unlock = true;
//write to FSI2PIB command reg starts read operation
// bit 0 low -> read command
l_err = DeviceFW::deviceOp( DeviceFW::WRITE,
i_target,
&l_command,
op_size,
DEVICE_FSI_ADDRESS(COMMAND_REG));
if(l_err)
{
break;
}
//check ststus reg to see result
l_err = DeviceFW::deviceOp( DeviceFW::READ,
i_target,
&l_status,
op_size,
DEVICE_FSI_ADDRESS(STATUS_REG));
if(l_err)
{
break;
}
//bits 17-19 indicates PCB/PIB error
if((l_status & 0x00007000) != 0)
{
TRACFCOMP( g_trac_fsiscom, ERR_MRK"fsiScomPerformOp:Read: PCB/PIB error received: l_status=0x%.8X)", l_status);
/*@
* @errortype
* @moduleid FSISCOM::MOD_FSISCOM_PERFORMOP
* @reasoncode FSISCOM::RC_READ_ERROR
* @userdata1 SCOM Addr
* @userdata2 SCOM Status Reg
* @devdesc fsiScomPerformOp> Error returned from SCOM Engine after read.
*/
l_err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE,
FSISCOM::MOD_FSISCOM_PERFORMOP,
FSISCOM::RC_READ_ERROR,
l_scomAddr,
TO_UINT64(l_status));
//@fixme: Need to callout target somehow. Need to decide how to callout target and where
// it should be done (this layer or somewhere higher in the call stack?)
//@todo: May add recover actions later. Currently undefined
break;
}
//read bits 0-31 to data0
l_err = DeviceFW::deviceOp( DeviceFW::READ,
i_target,
&scratchData.data32_0,
op_size,
DEVICE_FSI_ADDRESS(DATA0_REG));
if(l_err)
{
break;
}
//read bits 32-63 to data1
l_err = DeviceFW::deviceOp( DeviceFW::READ,
i_target,
&scratchData.data32_1,
op_size,
DEVICE_FSI_ADDRESS(DATA1_REG));
if(l_err)
{
break;
}
// atomic section <<
need_unlock = false;
mutex_unlock(l_mutex);
TRACUCOMP( g_trac_fsiscom, "fsiScomPerformOp: Read: l_scomAddr=0x%X, l_data0=0x%X, l_data1=0x%X", l_scomAddr, scratchData.data32_0, scratchData.data32_1);
memcpy(io_buffer, &(scratchData.data64), 8);
}
else
{
TRACFCOMP( g_trac_fsiscom, ERR_MRK"fsiScomPerformOp:Read: PCB/PIB error received: l_status=0x%.8X)", l_status);
/*@
* @errortype
* @moduleid FSISCOM::MOD_FSISCOM_PERFORMOP
* @reasoncode FSISCOM::RC_INVALID_OPTYPE
* @userdata1 Operation Type (i_opType) : 0=READ, 1=WRITE
* @userdata2 0
* @devdesc fsiScomPerformOp> Unsupported Operation Type specified
*/
l_err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE,
FSISCOM::MOD_FSISCOM_PERFORMOP,
FSISCOM::RC_INVALID_OPTYPE,
TO_UINT64(i_opType),
0);
//@fixme: Need to callout target somehow. Need to decide how to callout target and where
// it should be done (this layer or somewhere higher in the call stack?)
break;
}
}while(0);
if( need_unlock && l_mutex )
{
mutex_unlock(l_mutex);
}
return l_err;
}
// Register SCom access functions to DD framework
DEVICE_REGISTER_ROUTE(DeviceFW::WILDCARD,
DeviceFW::FSISCOM,
TARGETING::TYPE_PROC,
fsiScomPerformOp);
DEVICE_REGISTER_ROUTE(DeviceFW::WILDCARD,
DeviceFW::FSISCOM,
TARGETING::TYPE_MEMBUF,
fsiScomPerformOp);
} // end namespace
|
