perf cs-etm: Create ETE decoder

If the magic number indicates ETE instantiate a OCSD_BUILTIN_DCD_ETE
decoder instead of OCSD_BUILTIN_DCD_ETMV4I. ETE is the new trace feature
for Armv9.

Testing performed
=================

* Old files with v0 and v1 headers for ETMv4 still open correctly
* New files with new magic number open on new versions of perf
* New files with new magic number fail to open on old versions of perf
* Decoding with the ETE decoder results in the same output as the ETMv4
  decoder as long as there are no new ETE packet types

Reviewed-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: https //lore.kernel.org/r/20210806134109.1182235-8-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index a1c0a74cc89a..3b9c283e3992 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -460,6 +460,21 @@ static void cs_etm__set_trace_param_etmv4(struct cs_etm_trace_params *t_params,
 	t_params[idx].etmv4.reg_traceidr = metadata[idx][CS_ETMV4_TRCTRACEIDR];
 }
 
+static void cs_etm__set_trace_param_ete(struct cs_etm_trace_params *t_params,
+					  struct cs_etm_auxtrace *etm, int idx)
+{
+	u64 **metadata = etm->metadata;
+
+	t_params[idx].protocol = CS_ETM_PROTO_ETE;
+	t_params[idx].ete.reg_idr0 = metadata[idx][CS_ETMV4_TRCIDR0];
+	t_params[idx].ete.reg_idr1 = metadata[idx][CS_ETMV4_TRCIDR1];
+	t_params[idx].ete.reg_idr2 = metadata[idx][CS_ETMV4_TRCIDR2];
+	t_params[idx].ete.reg_idr8 = metadata[idx][CS_ETMV4_TRCIDR8];
+	t_params[idx].ete.reg_configr = metadata[idx][CS_ETMV4_TRCCONFIGR];
+	t_params[idx].ete.reg_traceidr = metadata[idx][CS_ETMV4_TRCTRACEIDR];
+	t_params[idx].ete.reg_devarch = metadata[idx][CS_ETE_TRCDEVARCH];
+}
+
 static int cs_etm__init_trace_params(struct cs_etm_trace_params *t_params,
 				     struct cs_etm_auxtrace *etm,
 				     int decoders)
@@ -479,6 +494,9 @@ static int cs_etm__init_trace_params(struct cs_etm_trace_params *t_params,
 		case __perf_cs_etmv4_magic:
 			cs_etm__set_trace_param_etmv4(t_params, etm, i);
 			break;
+		case __perf_cs_ete_magic:
+			cs_etm__set_trace_param_ete(t_params, etm, i);
+			break;
 		default:
 			return -EINVAL;
 		}