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* coresight: etm4x: docs: Update ABI doc for new sysfs etm4 attributesMike Leach2019-11-071-0/+47
| | | | | | | | | | This updates the ABI document to reflect recent additions to the ETM4.X driver sysfs interface. Signed-off-by: Mike Leach <mike.leach@linaro.org> [Updated Date and KernelVersion fields] Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* coresight: etm4x: docs: Update ABI doc for new sysfs name scheme.Mike Leach2019-11-071-68/+68
| | | | | | | | | | | Recent updates to CoreSight drivers have changed the component naming schema used in sysfs. This updates the ABI document to reflect the new naming schema. Signed-off-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* coresight: etm4x: adding config and traceid registersMathieu Poirier2016-05-011-0/+13
| | | | | | | | | Adding new sysFS management interface to query the configuration and the traceid registers. Both are required to convey information to the perf cmd line tools when using ETMv4 tracers as PMU. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* coresight-etm4x: Change the name of the ctxid_val to ctxid_pidChunyan Zhang2015-08-051-1/+1
| | | | | | | | | | | | | | | | 'ctxid_val' array was used to store the value of ETM context ID comparator which actually stores the process ID to be traced, so using 'ctxid_pid' as its name instead make it easier to understand. This patch also changes the ABI, it is normally not allowed, but fortunately it is a testing ABI and very new for now. Nevertheless, if you don't think it should be changed, we could always add an alias for userspace. Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org> Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* coresight-etm4x: Read only access to the tracer's ID registersMathieu Poirier2015-05-241-0/+90
| | | | | | | | | 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>
* coresight-etm4x: Read only access to the main management registersMathieu Poirier2015-05-241-0/+77
| | | | | | | | | Having access to the ETMv4 management registers is very useful as they give meaningful information on how the IP block has been configured at synthesis time. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* coresight-etm4x: Controls pertaining to the VM ID functionsPratik Patel2015-05-241-0/+20
| | | | | | | | | Adding sysfs entries to access and configure specifics about the virtual machine ID comparator functions. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* coresight-etm4x: Controls pertaining to the context ID functionsPratik Patel2015-05-241-0/+19
| | | | | | | | | Adding sysfs entries to access and configure specifics about the context ID comparator functions. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* coresight-etm4x: Controls pertaining to the selection of resourcesPratik Patel2015-05-241-0/+12
| | | | | | | | | Adding sysfs entries to control the selection of the resources the trace unit will use as triggers to perform a trace run. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* coresight-etm4x: Controls pertaining to the counter functionsPratik Patel2015-05-241-0/+26
| | | | | | | | | Adding sysfs entries related to the counter functionality, more specifically to set, control and reload the counters. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* coresight-etm4x: Controls pertaining to the sequencer functionsPratik Patel2015-05-241-0/+25
| | | | | | | | | | Adding sysfs entries to access the sequencers related registers, more specifically the sequencer state, the sequencer state transition and the sequencer reset control registers. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* coresight-etm4x: Controls pertaining to the address comparator functionsPratik Patel2015-05-241-0/+25
| | | | | | | | | | | Adding sysfs entries to control the various mode the address comparator registers can enact, i.e, start/top, single, and range. Also supplementing with address comparator types configuration registers access, mandatory to complete the configuration of the comparator functions. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* coresight-etm4x: Controls pertaining to the ViewInst registerPratik Patel2015-05-241-0/+20
| | | | | | | | | | Adding sysfs entries to control the ViewInst register's event selector along with secure and non-secure exception level instruction tracing. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* coresight-etm4x: Controls pertaining to various configuration optionsPratik Patel2015-05-241-0/+26
| | | | | | | | | | | | Adding sysfs entries to configure: . global timestamp. . how often trace synchronisation occur. . the threashold value for cycle counting. . branch and broadcasting regions. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* coresight-etm4x: Controls pertaining to the reset, mode, pe and eventsPratik Patel2015-05-241-0/+33
| | | | | | | | | | | | Adding sysfs entries to: . set the tracing entity with default values. . set various mode associated to the tracing entity. . select the processing entity the tracing entity relates to. . select various events of interest. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* coresight-etm4x: Controls pertaining to tracer configurationPratik Patel2015-05-241-0/+62
| | | | | | | | | | | | | Tracers can be configured with various options at synthesis time and knowing what resources are available is important for SW configuration purposes. As such adding RO sysfs entries for characteristics related to the tracer implementation. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* coresight-etm4x: Adding CoreSight ETM4x driverPratik Patel2015-05-241-0/+15
This driver manages the CoreSight ETMv4 (Embedded Trace Macrocell) IP block to support HW assisted tracing on ARMv7 and ARMv8 architectures. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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