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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/hwp/perv/p9_proc_gettracearray.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015,2019 */
/* [+] 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 */
//------------------------------------------------------------------------------
/// @file p9_proc_gettracearray.H
///
/// @brief Collect contents of specified trace array via SCOM.
///
/// Collects contents of specified trace array via SCOM. Optionally
/// manages chiplet domain trace engine state (start/stop/reset) around
/// trace array data collection. Trace array data can be collected only
/// when its controlling chiplet trace engine is stopped.
///
/// Trace array entries will be packed into data buffer from
/// oldest->youngest entry.
///
/// Calling code is expected to pass the proper target type based on the
/// desired trace resource; a convenience function is provided to find out
/// the expected target type for a given trace resource.
//------------------------------------------------------------------------------
// *HWP HW Owner : Joachim Fenkes <fenkes@de.ibm.com>
// *HWP HW Backup Owner : Joe McGill <jmcgill@us.ibm.com>
// *HWP FW Owner : Shakeeb Pasha <shakeebbk@in.ibm.com>
// *HWP Team : Perv
// *HWP Level : 3
// *HWP Consumed by : FSP
//------------------------------------------------------------------------------
#ifndef _PROC_GETTRACEARRAY_H_
#define _PROC_GETTRACEARRAY_H_
//------------------------------------------------------------------------------
// Includes
//------------------------------------------------------------------------------
#include <fapi2.H>
#include "p9_tracearray_defs.H"
#include "p9_sbe_tracearray.H"
static const fapi2::TargetType PROC_GETTRACEARRAY_TARGET_TYPES =
fapi2::TARGET_TYPE_PROC_CHIP |
fapi2::TARGET_TYPE_OBUS |
fapi2::TARGET_TYPE_MCBIST |
fapi2::TARGET_TYPE_MC |
fapi2::TARGET_TYPE_EX |
fapi2::TARGET_TYPE_CORE;
// function pointer typedef definition for HWP call support
typedef fapi2::ReturnCode
(*p9_proc_gettracearray_FP_t)(const fapi2::Target<PROC_GETTRACEARRAY_TARGET_TYPES>&,
const proc_gettracearray_args&,
fapi2::variable_buffer& o_ta_data);
extern "C"
{
/**
* @brief Return the target type needed to access a given trace array
* @param ta_id The trace array / trace bus ID requested.
* @return The type of target to hand to proc_gettracearray to clearly identify the array instance.
*/
static inline fapi2::TargetType proc_gettracearray_target_type(p9_tracearray_bus_id i_trace_bus)
{
if (i_trace_bus <= _PROC_TB_LAST_PROC_TARGET)
{
return fapi2::TARGET_TYPE_PROC_CHIP;
}
else if (i_trace_bus <= _PROC_TB_LAST_OBUS_TARGET)
{
return fapi2::TARGET_TYPE_OBUS;
}
else if (i_trace_bus <= _PROC_TB_LAST_MC_TARGET)
{
return fapi2::TARGET_TYPE_MCBIST;
}
else if (i_trace_bus <= _PROC_TB_LAST_EX_TARGET)
{
return fapi2::TARGET_TYPE_EX;
}
else if (i_trace_bus <= _PROC_TB_LAST_CORE_TARGET)
{
return fapi2::TARGET_TYPE_CORE;
}
else if (i_trace_bus <= _PROC_TB_LAST_AXONE_CHIP_TARGET)
{
return fapi2::TARGET_TYPE_PROC_CHIP;
}
else if (i_trace_bus <= _PROC_TB_LAST_AXONE_MC_TARGET)
{
return fapi2::TARGET_TYPE_MC;
}
else
{
return fapi2::TARGET_TYPE_EX;
}
}
/**
* @brief Determine whether a trace entry is a start marker
* @param[in] i_buffer a buffer containing the trace entry
* @param[in] i_offset the bit offset of the entry inside the buffer, defaults to 0 if omitted
* @return FAPI2_RC_SUCCESS if the entry _is_ a start marker
* FAPI2_RC_FALSE if the entry is _not_ a start marker
* FAPI2_RC_OVERFLOW if the buffer did not contain enough bits
*/
static inline fapi2::ReturnCodes p9_tracearray_is_trace_start_marker(
const fapi2::variable_buffer i_buffer, uint32_t i_offset = 0)
{
uint32_t l_magic = 0;
uint64_t l_zeros = 0;
fapi2::ReturnCodes l_rc;
l_rc = i_buffer.extract(l_magic, i_offset, 32);
if (l_rc != fapi2::FAPI2_RC_SUCCESS)
{
return l_rc;
}
l_rc = i_buffer.extract(l_zeros, i_offset + 32, 64);
if (l_rc != fapi2::FAPI2_RC_SUCCESS)
{
return l_rc;
}
return (l_magic == 0xBA55A1E0 && l_zeros == 0) ?
fapi2::FAPI2_RC_SUCCESS : fapi2::FAPI2_RC_FALSE;
}
//------------------------------------------------------------------------------
// Function prototype
//------------------------------------------------------------------------------
/**
* @brief Retrieve trace array data from selected trace array via SCOM,
* optionally performing trace stop (prior to dump) and/or
* trace restart (after dump)
*
* @param i_target Chip or chiplet target. The necessary target type can be
* queried through proc_gettracearray_target_type().
* @param i_args Argument structure with additional parameters
* @param o_ta_data Trace array data. Will contain all trace entries read
* from the array concatenated, starting with the oldest trace
* entry and ending with the newest.
* @return FAPI2_RC_SUCCESS
* if trace array dump sequence completes successfully,
* RC_PROC_GETTRACEARRAY_INVALID_BUS
* if an invalid trace bus ID has been requested
* RC_PROC_GETTRACEARRAY_INVALID_TARGET
* if the supplied target type does not match the requested trace bus
* RC_PROC_GETTRACEARRAY_CORE_NOT_DUMPABLE
* if a core trace array has been requested but the chip's core
* is not dumpable via SCOM -> use fastarray instead
* RC_PROC_GETTRACEARRAY_TRACE_RUNNING
* if trace array is running when dump collection is attempted,
* RC_PROC_GETTRACEARRAY_TRACE_MUX_INCORRECT
* if the primary trace mux is not set up to trace the requested bus,
* else FAPI getscom/putscom return code for failing operation
*/
fapi2::ReturnCode p9_proc_gettracearray(const fapi2::Target<PROC_GETTRACEARRAY_TARGET_TYPES>& i_target,
const proc_gettracearray_args& i_args,
fapi2::variable_buffer& o_ta_data);
} // extern "C"
#endif // _PROC_GETTRACEARRAY_H_
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