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From: James Clark <james.clark@arm.com>
To: acme@kernel.org, mathieu.poirier@linaro.org, coresight@lists.linaro.org
Cc: leo.yan@linaro.org, al.grant@arm.com, suzuki.poulose@arm.com,
	anshuman.khandual@arm.com, mike.leach@linaro.org,
	James Clark <james.clark@arm.com>,
	John Garry <john.garry@huawei.com>, Will Deacon <will@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org
Subject: [PATCH 2/6] perf cs-etm: Initialise architecture based on TRCIDR1
Date: Wed, 21 Jul 2021 10:07:01 +0100	[thread overview]
Message-ID: <20210721090706.21523-3-james.clark@arm.com> (raw)
In-Reply-To: <20210721090706.21523-1-james.clark@arm.com>

Currently the architecture is hard coded as ARCH_V8, but with the
introduction of ETE we want to pick ARCH_AA64. And this change is also
applicable to ETM v4.4 onwards as well.

Signed-off-by: James Clark <james.clark@arm.com>
---
 tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
index 30889a9d0165..5972a8afcc6b 100644
--- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
+++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
@@ -126,6 +126,18 @@ static int cs_etm_decoder__gen_etmv3_config(struct cs_etm_trace_params *params,
 	return 0;
 }
 
+#define TRCIDR1_TRCARCHMIN_SHIFT 4
+#define TRCIDR1_TRCARCHMIN_MASK  GENMASK(7, 4)
+#define TRCIDR1_TRCARCHMIN(x)    (((x) & TRCIDR1_TRCARCHMIN_MASK) >> TRCIDR1_TRCARCHMIN_SHIFT)
+static enum _ocsd_arch_version cs_etm_decoder__get_arch_ver(u32 reg_idr1)
+{
+	/*
+	 * If the ETM trace minor version is 4 or more then we can assume
+	 * the architecture is ARCH_AA64 rather than just V8
+	 */
+	return TRCIDR1_TRCARCHMIN(reg_idr1) >= 4 ? ARCH_AA64 : ARCH_V8;
+}
+
 static void cs_etm_decoder__gen_etmv4_config(struct cs_etm_trace_params *params,
 					     ocsd_etmv4_cfg *config)
 {
@@ -140,7 +152,7 @@ static void cs_etm_decoder__gen_etmv4_config(struct cs_etm_trace_params *params,
 	config->reg_idr11 = 0;
 	config->reg_idr12 = 0;
 	config->reg_idr13 = 0;
-	config->arch_ver = ARCH_V8;
+	config->arch_ver = cs_etm_decoder__get_arch_ver(params->etmv4.reg_idr1);
 	config->core_prof = profile_CortexA;
 }
 
-- 
2.28.0


  parent reply	other threads:[~2021-07-21  9:23 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-21  9:06 [PATCH 0/6] Support ETE decoding James Clark
2021-07-21  9:07 ` [PATCH 1/6] perf cs-etm: Refactor initialisation of decoder params James Clark
2021-07-31  5:48   ` Leo Yan
2021-07-21  9:07 ` James Clark [this message]
2021-07-22 11:10   ` [PATCH 2/6] perf cs-etm: Initialise architecture based on TRCIDR1 Mike Leach
2021-07-31  6:03     ` Leo Yan
2021-08-02 14:04       ` Mike Leach
2021-08-02 15:03         ` Leo Yan
2021-08-02 15:43           ` Mike Leach
2021-07-21  9:07 ` [PATCH 3/6] perf cs-etm: Save TRCDEVARCH register James Clark
2021-07-21  9:48   ` Mike Leach
2021-07-23 12:09     ` James Clark
2021-07-31  6:37     ` Leo Yan
2021-08-03 12:33       ` James Clark
2021-08-03 12:34       ` James Clark
2021-08-05  9:40         ` Leo Yan
2021-08-03 12:36       ` James Clark
2021-07-31  7:43   ` Leo Yan
2021-08-02 11:21     ` Mike Leach
2021-08-02 12:05       ` Leo Yan
2021-08-02 12:48         ` Mike Leach
2021-08-03 12:29         ` James Clark
2021-07-21  9:07 ` [PATCH 4/6] perf cs-etm: Update OpenCSD decoder for ETE James Clark
2021-07-31  6:50   ` Leo Yan
2021-07-21  9:07 ` [PATCH 5/6] perf cs-etm: Create ETE decoder James Clark
2021-07-31  7:23   ` Leo Yan
2021-08-03 13:09     ` James Clark
2021-08-05 10:59       ` Leo Yan
2021-07-21  9:07 ` [PATCH 6/6] perf cs-etm: Print the decoder name James Clark
2021-07-31  7:30   ` Leo Yan
2021-08-06  9:43     ` James Clark
2021-08-06 11:52       ` Leo Yan
2021-07-21 14:59 ` [PATCH 0/6] Support ETE decoding Mathieu Poirier

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