| Message ID | 20201119164547.2982871-19-suzuki.poulose@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | coresight: etm4x: Support for system instructions | expand |
On Thu, Nov 19, 2020 at 04:45:40PM +0000, Suzuki K Poulose wrote: > Expose the TRCDEVARCH register via the sysfs for component > detection. Given that the TRCIDR1 may not completely identify > the ETM component and instead need to use TRCDEVARCH, expose > this via sysfs for tools to use it for identification. > > Cc: Mike Leach <mike.leach@linaro.org> > Cc: Mathieu Poirier <mathieu.poirier@linaro.org> > Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> > --- > drivers/hwtracing/coresight/coresight-etm4x-sysfs.c | 2 ++ > 1 file changed, 2 insertions(+) Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> > > diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c > index 009818675928..277fd5bff811 100644 > --- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c > +++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c > @@ -2395,6 +2395,7 @@ coresight_etm4x_cross_read(trcidr10, TRCIDR10); > coresight_etm4x_cross_read(trcidr11, TRCIDR11); > coresight_etm4x_cross_read(trcidr12, TRCIDR12); > coresight_etm4x_cross_read(trcidr13, TRCIDR13); > +coresight_etm4x_cross_read(trcdevarch, TRCDEVARCH); > > static struct attribute *coresight_etmv4_trcidr_attrs[] = { > &dev_attr_trcidr0.attr, > @@ -2410,6 +2411,7 @@ static struct attribute *coresight_etmv4_trcidr_attrs[] = { > &dev_attr_trcidr11.attr, > &dev_attr_trcidr12.attr, > &dev_attr_trcidr13.attr, > + &dev_attr_trcdevarch.attr, > NULL, > }; > > -- > 2.24.1 >
diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c index 009818675928..277fd5bff811 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c @@ -2395,6 +2395,7 @@ coresight_etm4x_cross_read(trcidr10, TRCIDR10); coresight_etm4x_cross_read(trcidr11, TRCIDR11); coresight_etm4x_cross_read(trcidr12, TRCIDR12); coresight_etm4x_cross_read(trcidr13, TRCIDR13); +coresight_etm4x_cross_read(trcdevarch, TRCDEVARCH); static struct attribute *coresight_etmv4_trcidr_attrs[] = { &dev_attr_trcidr0.attr, @@ -2410,6 +2411,7 @@ static struct attribute *coresight_etmv4_trcidr_attrs[] = { &dev_attr_trcidr11.attr, &dev_attr_trcidr12.attr, &dev_attr_trcidr13.attr, + &dev_attr_trcdevarch.attr, NULL, };
Expose the TRCDEVARCH register via the sysfs for component detection. Given that the TRCIDR1 may not completely identify the ETM component and instead need to use TRCDEVARCH, expose this via sysfs for tools to use it for identification. Cc: Mike Leach <mike.leach@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> --- drivers/hwtracing/coresight/coresight-etm4x-sysfs.c | 2 ++ 1 file changed, 2 insertions(+)