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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright(C) 2020 Linaro Limited. All rights reserved.
* Author: Mike Leach <mike.leach@linaro.org>
*/
#include "coresight-config.h"
/* ETMv4 includes and features */
#if IS_ENABLED(CONFIG_CORESIGHT_SOURCE_ETM4X)
#include "coresight-etm4x-cfg.h"
/* preload configurations and features */
/* preload in features for ETMv4 */
/* strobe feature */
static struct cscfg_parameter_desc strobe_params[] = {
{
.name = "window",
.value = 5000,
},
{
.name = "period",
.value = 10000,
},
};
static struct cscfg_regval_desc strobe_regs[] = {
/* resource selectors */
{
.type = CS_CFG_REG_TYPE_RESOURCE,
.offset = TRCRSCTLRn(2),
.hw_info = ETM4_CFG_RES_SEL,
.val32 = 0x20001,
},
{
.type = CS_CFG_REG_TYPE_RESOURCE,
.offset = TRCRSCTLRn(3),
.hw_info = ETM4_CFG_RES_SEQ,
.val32 = 0x20002,
},
/* strobe window counter 0 - reload from param 0 */
{
.type = CS_CFG_REG_TYPE_RESOURCE | CS_CFG_REG_TYPE_VAL_SAVE,
.offset = TRCCNTVRn(0),
.hw_info = ETM4_CFG_RES_CTR,
},
{
.type = CS_CFG_REG_TYPE_RESOURCE | CS_CFG_REG_TYPE_VAL_PARAM,
.offset = TRCCNTRLDVRn(0),
.hw_info = ETM4_CFG_RES_CTR,
.val32 = 0,
},
{
.type = CS_CFG_REG_TYPE_RESOURCE,
.offset = TRCCNTCTLRn(0),
.hw_info = ETM4_CFG_RES_CTR,
.val32 = 0x10001,
},
/* strobe period counter 1 - reload from param 1 */
{
.type = CS_CFG_REG_TYPE_RESOURCE | CS_CFG_REG_TYPE_VAL_SAVE,
.offset = TRCCNTVRn(1),
.hw_info = ETM4_CFG_RES_CTR,
},
{
.type = CS_CFG_REG_TYPE_RESOURCE | CS_CFG_REG_TYPE_VAL_PARAM,
.offset = TRCCNTRLDVRn(1),
.hw_info = ETM4_CFG_RES_CTR,
.val32 = 1,
},
{
.type = CS_CFG_REG_TYPE_RESOURCE,
.offset = TRCCNTCTLRn(1),
.hw_info = ETM4_CFG_RES_CTR,
.val32 = 0x8102,
},
/* sequencer */
{
.type = CS_CFG_REG_TYPE_RESOURCE,
.offset = TRCSEQEVRn(0),
.hw_info = ETM4_CFG_RES_SEQ,
.val32 = 0x0081,
},
{
.type = CS_CFG_REG_TYPE_RESOURCE,
.offset = TRCSEQEVRn(1),
.hw_info = ETM4_CFG_RES_SEQ,
.val32 = 0x0000,
},
/* view-inst */
{
.type = CS_CFG_REG_TYPE_STD | CS_CFG_REG_TYPE_VAL_MASK,
.offset = TRCVICTLR,
.val32 = 0x0003,
.mask32 = 0x0003,
},
/* end of regs */
};
struct cscfg_feature_desc strobe_etm4x = {
.name = "strobing",
.description = "Generate periodic trace capture windows.\n"
"parameter \'window\': a number of CPU cycles (W)\n"
"parameter \'period\': trace enabled for W cycles every period x W cycles\n",
.match_flags = CS_CFG_MATCH_CLASS_SRC_ETM4,
.nr_params = ARRAY_SIZE(strobe_params),
.params_desc = strobe_params,
.nr_regs = ARRAY_SIZE(strobe_regs),
.regs_desc = strobe_regs,
};
/* create an autofdo configuration */
/* we will provide 9 sets of preset parameter values */
#define AFDO_NR_PRESETS 9
/* the total number of parameters in used features */
#define AFDO_NR_PARAMS ARRAY_SIZE(strobe_params)
static const char *afdo_ref_names[] = {
"strobing",
};
/*
* set of presets leaves strobing window constant while varying period to allow
* experimentation with mark / space ratios for various workloads
*/
static u64 afdo_presets[AFDO_NR_PRESETS][AFDO_NR_PARAMS] = {
{ 5000, 2 },
{ 5000, 4 },
{ 5000, 8 },
{ 5000, 16 },
{ 5000, 64 },
{ 5000, 128 },
{ 5000, 512 },
{ 5000, 1024 },
{ 5000, 4096 },
};
struct cscfg_config_desc afdo_etm4x = {
.name = "autofdo",
.description = "Setup ETMs with strobing for autofdo\n"
"Supplied presets allow experimentation with mark-space ratio for various loads\n",
.nr_feat_refs = ARRAY_SIZE(afdo_ref_names),
.feat_ref_names = afdo_ref_names,
.nr_presets = AFDO_NR_PRESETS,
.nr_total_params = AFDO_NR_PARAMS,
.presets = &afdo_presets[0][0],
};
/* end of ETM4x configurations */
#endif /* IS_ENABLED(CONFIG_CORESIGHT_SOURCE_ETM4X) */
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