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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/xscom/runtime/rt_xscom.C $ */
/* */
/* IBM CONFIDENTIAL */
/* */
/* COPYRIGHT International Business Machines Corp. 2013,2014 */
/* */
/* 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 otherwise */
/* divested of its trade secrets, irrespective of what has been */
/* deposited with the U.S. Copyright Office. */
/* */
/* Origin: 30 */
/* */
/* IBM_PROLOG_END_TAG */
#include <devicefw/driverif.H>
#include <trace/interface.H>
#include <errl/errlentry.H>
#include <errl/errlmanager.H>
#include <targeting/common/targetservice.H>
#include <targeting/common/utilFilter.H>
#include <xscom/xscomreasoncodes.H>
#include "../xscom.H"
#include <assert.h>
#include <errl/errludlogregister.H>
#include <runtime/interface.h>
#include <errl/errludtarget.H>
#include <runtime/rt_targeting.H>
// Trace definition
trace_desc_t* g_trac_xscom = NULL;
TRAC_INIT(&g_trac_xscom, "XSCOM", 2*KILOBYTE, TRACE::BUFFER_SLOW);
namespace XSCOM
{
DEVICE_REGISTER_ROUTE(DeviceFW::WILDCARD,
DeviceFW::XSCOM,
TARGETING::TYPE_PROC,
xscomPerformOp);
// Direct all scom calls though this interface at runtime
DEVICE_REGISTER_ROUTE(DeviceFW::WILDCARD,
DeviceFW::FSISCOM,
TARGETING::TYPE_PROC,
xscomPerformOp);
DEVICE_REGISTER_ROUTE(DeviceFW::WILDCARD,
DeviceFW::FSISCOM,
TARGETING::TYPE_MEMBUF,
xscomPerformOp);
DEVICE_REGISTER_ROUTE(DeviceFW::WILDCARD,
DeviceFW::IBSCOM,
TARGETING::TYPE_MEMBUF,
xscomPerformOp);
/**
* @brief Internal routine that verifies the validity of input parameters
* for an XSCOM access.
*
* @param[in] i_opType Operation type, see DeviceFW::OperationType
* in driverif.H
* @param[in] i_target XSCom target
* @param[in/out] i_buffer Read: Pointer to output data storage
* Write: Pointer to input data storage
* @param[in/out] i_buflen Input: size of io_buffer (in bytes)
* Output:
* Read: Size of output data
* Write: Size of data written
* @param[in] i_args This is an argument list for DD framework.
* In this function, there's only one argument,
* which is the MMIO XSCom address
* @return errlHndl_t
*/
errlHndl_t xscomOpSanityCheck(const DeviceFW::OperationType i_opType,
const TARGETING::Target* i_target,
const void* i_buffer,
const size_t& i_buflen,
const va_list i_args);
errlHndl_t xscomOpSanityCheck(const DeviceFW::OperationType i_opType,
const TARGETING::Target* i_target,
const void* i_buffer,
const size_t& i_buflen,
const va_list i_args){
errlHndl_t l_err = NULL;
do
{
// Verify data buffer
if ( (i_buflen < XSCOM_BUFFER_SIZE) ||
(i_buffer == NULL) )
{
/*@
* @errortype
* @moduleid XSCOM_RT_SANITY_CHECK
* @reasoncode XSCOM_INVALID_DATA_BUFFER
* @userdata1 Buffer size
* @userdata2 XSCom address
* @devdesc XSCOM buffer size < 8 bytes or NULL data buff
*/
l_err =
new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE,
XSCOM_RT_SANITY_CHECK,
XSCOM_INVALID_DATA_BUFFER,
i_buflen,
va_arg(i_args,uint64_t));
break;
}
// Verify OP type
if ( (i_opType != DeviceFW::READ) &&
(i_opType != DeviceFW::WRITE) )
{
/*@
* @errortype
* @moduleid XSCOM_RT_SANITY_CHECK
* @reasoncode XSCOM_INVALID_OP_TYPE
* @userdata1 Operation type
* @userdata2 XSCom address
* @devdesc XSCOM invalid operation type
*/
l_err =
new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE,
XSCOM_RT_SANITY_CHECK,
XSCOM_INVALID_OP_TYPE,
i_opType,
va_arg(i_args,uint64_t));
break;
}
} while(0);
return l_err;
}
/**
* @brief Do the scom operation
*/
errlHndl_t xScomDoOp(DeviceFW::OperationType i_ioType,
TARGETING::Target * i_target,
uint64_t i_scomAddr,
void * io_buffer)
{
errlHndl_t l_err = NULL;
int rc = 0;
RT_TARG::rtChipId_t proc_id = 0;
// Convert target to something Sapphire understands
l_err = RT_TARG::getRtTarget(i_target,
proc_id);
if(l_err)
{
return l_err;
}
if(g_hostInterfaces != NULL &&
g_hostInterfaces->scom_read != NULL &&
g_hostInterfaces->scom_write != NULL)
{
if(i_ioType == DeviceFW::READ)
{
rc =
g_hostInterfaces->scom_read(proc_id,
i_scomAddr,
io_buffer
);
}
else if (i_ioType == DeviceFW::WRITE)
{
rc =
g_hostInterfaces->scom_write(proc_id,
i_scomAddr,
io_buffer
);
}
if(rc)
{
// convert rc to error log
/*@
* @errortype
* @moduleid XSCOM_RT_DO_OP
* @reasoncode XSCOM_RUNTIME_ERR
* @userdata1 Hypervisor return code
* @userdata2 SCOM address
* @devdesc XSCOM access error
*/
l_err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_INFORMATIONAL,
XSCOM_RT_DO_OP,
XSCOM_RUNTIME_ERR,
rc,
i_scomAddr);
// TODO - RTC 86782 need to know what kind of errors Sapphire can
// return - could effect callout.
l_err->addHwCallout(i_target,
HWAS::SRCI_PRIORITY_LOW,
HWAS::NO_DECONFIG,
HWAS::GARD_NULL);
// Note: no trace buffer available at runtime
}
}
else // Hypervisor interface not initialized
{
TRACFCOMP(g_trac_xscom,ERR_MRK"Hypervisor scom interface not linked");
/*@
* @errortype
* @moduleid XSCOM_RT_DO_OP
* @reasoncode XSCOM_RUNTIME_INTERFACE_ERR
* @userdata1 0
* @userdata2 SCOM address
* @devdesc XSCOM runtime interface not linked.
*/
l_err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_INFORMATIONAL,
XSCOM_RT_DO_OP,
XSCOM_RUNTIME_INTERFACE_ERR,
0,
i_scomAddr);
l_err->addProcedureCallout(HWAS::EPUB_PRC_HB_CODE,
HWAS::SRCI_PRIORITY_HIGH);
}
return l_err;
}
errlHndl_t xscomPerformOp(DeviceFW::OperationType i_opType,
TARGETING::Target* i_target,
void* io_buffer,
size_t& io_buflen,
int64_t i_accessType,
va_list i_args)
{
TRACDCOMP(g_trac_xscom,ENTER_MRK"xscomPerformOp");
errlHndl_t l_err = NULL;
uint64_t l_addr = va_arg(i_args,uint64_t);
l_err = xscomOpSanityCheck(i_opType,
i_target,
io_buffer,
io_buflen,
i_args);
if (!l_err)
{
l_err = xScomDoOp(i_opType,
i_target,
l_addr,
io_buffer);
}
TRACDCOMP(g_trac_xscom,EXIT_MRK"xscomPerformOp");
return l_err;
}
}; // end namespace XSCOM
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