@@ -4,7 +4,8 @@
#
obj-$(CONFIG_CORESIGHT) += coresight.o
coresight-y := coresight-core.o coresight-etm-perf.o coresight-platform.o \
- coresight-sysfs.o coresight-syscfg.o coresight-config.o
+ coresight-sysfs.o coresight-syscfg.o coresight-config.o \
+ coresight-cfg-preload.o coresight-cfg-afdo.o
obj-$(CONFIG_CORESIGHT_LINK_AND_SINK_TMC) += coresight-tmc.o
coresight-tmc-y := coresight-tmc-core.o coresight-tmc-etf.o \
coresight-tmc-etr.o
new file mode 100644
@@ -0,0 +1,153 @@
+// 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) */
new file mode 100644
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright(C) 2020 Linaro Limited. All rights reserved.
+ * Author: Mike Leach <mike.leach@linaro.org>
+ */
+
+#include "coresight-cfg-preload.h"
+#include "coresight-config.h"
+#include "coresight-syscfg.h"
+
+/* Basic features and configurations pre-loaded on initialisation */
+
+static struct cscfg_feature_desc *preload_feats[] = {
+#if IS_ENABLED(CONFIG_CORESIGHT_SOURCE_ETM4X)
+ &strobe_etm4x,
+#endif
+ NULL
+};
+
+static struct cscfg_config_desc *preload_cfgs[] = {
+#if IS_ENABLED(CONFIG_CORESIGHT_SOURCE_ETM4X)
+ &afdo_etm4x,
+#endif
+ NULL
+};
+
+/* preload called on initialisation */
+int cscfg_preload(void)
+{
+ return cscfg_load_config_sets(preload_cfgs, preload_feats);
+}
new file mode 100644
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright(C) 2020 Linaro Limited. All rights reserved.
+ * Author: Mike Leach <mike.leach@linaro.org>
+ */
+
+/* declare preloaded configurations and features */
+
+/* from coresight-cfg-afdo.c - etm 4x features */
+#if IS_ENABLED(CONFIG_CORESIGHT_SOURCE_ETM4X)
+extern struct cscfg_feature_desc strobe_etm4x;
+extern struct cscfg_config_desc afdo_etm4x;
+#endif
@@ -9,6 +9,21 @@
#include "coresight-config.h"
#include "coresight-etm4x.h"
+/* ETMv4 specific config defines */
+
+/* resource IDs */
+
+#define ETM4_CFG_RES_CTR 0x001
+#define ETM4_CFG_RES_CMP 0x002
+#define ETM4_CFG_RES_CMP_PAIR0 0x003
+#define ETM4_CFG_RES_CMP_PAIR1 0x004
+#define ETM4_CFG_RES_SEL 0x005
+#define ETM4_CFG_RES_SEL_PAIR0 0x006
+#define ETM4_CFG_RES_SEL_PAIR1 0x007
+#define ETM4_CFG_RES_SEQ 0x008
+#define ETM4_CFG_RES_TS 0x009
+#define ETM4_CFG_RES_MASK 0x00F
+
/* ETMv4 specific config functions */
int etm4_cscfg_register(struct coresight_device *csdev);
@@ -752,8 +752,17 @@ int __init cscfg_init(void)
INIT_LIST_HEAD(&cscfg_mgr->config_desc_list);
atomic_set(&cscfg_mgr->sys_active_cnt, 0);
+ /* preload built-in configurations */
+ err = cscfg_preload();
+ if (err)
+ goto exit_err;
+
dev_info(cscfg_device(), "CoreSight Configuration manager initialised");
return 0;
+
+exit_err:
+ cscfg_clear_device();
+ return err;
}
void cscfg_exit(void)
@@ -56,6 +56,7 @@ struct cscfg_registered_csdev {
/* internal core operations for cscfg */
int __init cscfg_init(void);
void cscfg_exit(void);
+int cscfg_preload(void);
/* syscfg manager external API */
int cscfg_load_config_sets(struct cscfg_config_desc **cfg_descs,