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authorMathieu Poirier <mathieu.poirier@linaro.org>2015-05-13 10:34:21 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-05-24 11:11:21 -0700
commit5625988e1e21261e20e18a64f275236eb47a9944 (patch)
tree9f6a994601e22f043aa51b6a000c65a434ee38bb /drivers/hwtracing
parenta467dae11d57c60dabf9f85d7691e6ce097fc424 (diff)
downloadlinux-5625988e1e21261e20e18a64f275236eb47a9944.tar.bz2
coresight-etm4x: Read only access to the tracer's ID registers
ETM ID registers contain valuable information about the capabilities of the implementation and are very useful when configuring the device for various trace scenarios. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing')
-rw-r--r--drivers/hwtracing/coresight/coresight-etm4x.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c
index 0568e4413411..f0b50af4fc30 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x.c
@@ -2238,6 +2238,37 @@ static struct attribute *coresight_etmv4_mgmt_attrs[] = {
NULL,
};
+coresight_simple_func(trcidr0, TRCIDR0);
+coresight_simple_func(trcidr1, TRCIDR1);
+coresight_simple_func(trcidr2, TRCIDR2);
+coresight_simple_func(trcidr3, TRCIDR3);
+coresight_simple_func(trcidr4, TRCIDR4);
+coresight_simple_func(trcidr5, TRCIDR5);
+/* trcidr[6,7] are reserved */
+coresight_simple_func(trcidr8, TRCIDR8);
+coresight_simple_func(trcidr9, TRCIDR9);
+coresight_simple_func(trcidr10, TRCIDR10);
+coresight_simple_func(trcidr11, TRCIDR11);
+coresight_simple_func(trcidr12, TRCIDR12);
+coresight_simple_func(trcidr13, TRCIDR13);
+
+static struct attribute *coresight_etmv4_trcidr_attrs[] = {
+ &dev_attr_trcidr0.attr,
+ &dev_attr_trcidr1.attr,
+ &dev_attr_trcidr2.attr,
+ &dev_attr_trcidr3.attr,
+ &dev_attr_trcidr4.attr,
+ &dev_attr_trcidr5.attr,
+ /* trcidr[6,7] are reserved */
+ &dev_attr_trcidr8.attr,
+ &dev_attr_trcidr9.attr,
+ &dev_attr_trcidr10.attr,
+ &dev_attr_trcidr11.attr,
+ &dev_attr_trcidr12.attr,
+ &dev_attr_trcidr13.attr,
+ NULL,
+};
+
static const struct attribute_group coresight_etmv4_group = {
.attrs = coresight_etmv4_attrs,
};
@@ -2247,9 +2278,15 @@ static const struct attribute_group coresight_etmv4_mgmt_group = {
.name = "mgmt",
};
+static const struct attribute_group coresight_etmv4_trcidr_group = {
+ .attrs = coresight_etmv4_trcidr_attrs,
+ .name = "trcidr",
+};
+
static const struct attribute_group *coresight_etmv4_groups[] = {
&coresight_etmv4_group,
&coresight_etmv4_mgmt_group,
+ &coresight_etmv4_trcidr_group,
NULL,
};