From f4aef1ea2663ac7efddd796970678911e56ea1f7 Mon Sep 17 00:00:00 2001 From: James Clark Date: Fri, 6 Aug 2021 14:41:02 +0100 Subject: perf cs-etm: Initialise architecture based on TRCIDR1 Currently the architecture is hard coded as ARCH_V8, but from ETMv4.4 onwards this should be ARCH_AA64. Reviewed-by: Leo Yan Signed-off-by: James Clark Cc: Alexander Shishkin Cc: Jiri Olsa Cc: John Garry Cc: Mark Rutland Cc: Mathieu Poirier Cc: Mike Leach Cc: Namhyung Kim Cc: Suzuki Poulouse Cc: Will Deacon Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https //lore.kernel.org/r/20210806134109.1182235-3-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) (limited to 'tools/perf/util/cs-etm-decoder') 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 187c038caa19..62d30b5d4b31 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 +126,21 @@ 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_etmv4_arch_ver(u32 reg_idr1) +{ + /* + * For ETMv4 if the trace minor version is 4 or more then we can assume + * the architecture is ARCH_AA64 rather than just V8. + * ARCH_V8 = V8 architecture + * ARCH_AA64 = Min v8r3 plus additional AA64 PE features + */ + 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 +155,7 @@ 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_etmv4_arch_ver(params->etmv4.reg_idr1); config->core_prof = profile_CortexA; } -- cgit v1.2.1