diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x index bde788dfd3f7..2fe2e3dae487 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x @@ -358,3 +358,93 @@ KernelVersion: 4.01 Contact: Mathieu Poirier Description: (R) Print the content of the Peripheral ID3 Register (0xFEC). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/.etm/trcidr/trcidr0 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (R) Returns the tracing capabilities of the trace unit (0x1E0). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/.etm/trcidr/trcidr1 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (R) Returns the tracing capabilities of the trace unit (0x1E4). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/.etm/trcidr/trcidr2 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (R) Returns the maximum size of the data value, data address, + VMID, context ID and instuction address in the trace unit + (0x1E8). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/.etm/trcidr/trcidr3 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (R) Returns the value associated with various resources + available to the trace unit. See the Trace Macrocell + architecture specification for more details (0x1E8). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/.etm/trcidr/trcidr4 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (R) Returns how many resources the trace unit supports (0x1F0). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/.etm/trcidr/trcidr5 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (R) Returns how many resources the trace unit supports (0x1F4). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/.etm/trcidr/trcidr8 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (R) Returns the maximum speculation depth of the instruction + trace stream. (0x180). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/.etm/trcidr/trcidr9 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (R) Returns the number of P0 right-hand keys that the trace unit + can use (0x184). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/.etm/trcidr/trcidr10 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (R) Returns the number of P1 right-hand keys that the trace unit + can use (0x188). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/.etm/trcidr/trcidr11 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (R) Returns the number of special P1 right-hand keys that the + trace unit can use (0x18C). The value is taken directly from + the HW. + +What: /sys/bus/coresight/devices/.etm/trcidr/trcidr12 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (R) Returns the number of conditional P1 right-hand keys that + the trace unit can use (0x190). The value is taken directly + from the HW. + +What: /sys/bus/coresight/devices/.etm/trcidr/trcidr13 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier +Description: (R) Returns the number of special conditional P1 right-hand keys + that the trace unit can use (0x194). The value is taken + directly from the HW. 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, };