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Diffstat (limited to 'kernel/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x')
| -rw-r--r-- | kernel/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x | 450 |
1 files changed, 450 insertions, 0 deletions
diff --git a/kernel/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x b/kernel/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x new file mode 100644 index 000000000..2355ed8ae --- /dev/null +++ b/kernel/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x @@ -0,0 +1,450 @@ +What: /sys/bus/coresight/devices/<memory_map>.etm/enable_source +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Enable/disable tracing on this specific trace entiry. + Enabling a source implies the source has been configured + properly and a sink has been identidifed for it. The path + of coresight components linking the source to the sink is + configured and managed automatically by the coresight framework. + +What: /sys/bus/coresight/devices/<memory_map>.etm/cpu +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) The CPU this tracing entity is associated with. + +What: /sys/bus/coresight/devices/<memory_map>.etm/nr_pe_cmp +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Indicates the number of PE comparator inputs that are + available for tracing. + +What: /sys/bus/coresight/devices/<memory_map>.etm/nr_addr_cmp +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Indicates the number of address comparator pairs that are + available for tracing. + +What: /sys/bus/coresight/devices/<memory_map>.etm/nr_cntr +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Indicates the number of counters that are available for + tracing. + +What: /sys/bus/coresight/devices/<memory_map>.etm/nr_ext_inp +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Indicates how many external inputs are implemented. + +What: /sys/bus/coresight/devices/<memory_map>.etm/numcidc +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Indicates the number of Context ID comparators that are + available for tracing. + +What: /sys/bus/coresight/devices/<memory_map>.etm/numvmidc +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Indicates the number of VMID comparators that are available + for tracing. + +What: /sys/bus/coresight/devices/<memory_map>.etm/nrseqstate +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Indicates the number of sequencer states that are + implemented. + +What: /sys/bus/coresight/devices/<memory_map>.etm/nr_resource +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Indicates the number of resource selection pairs that are + available for tracing. + +What: /sys/bus/coresight/devices/<memory_map>.etm/nr_ss_cmp +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Indicates the number of single-shot comparator controls that + are available for tracing. + +What: /sys/bus/coresight/devices/<memory_map>.etm/reset +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (W) Cancels all configuration on a trace unit and set it back + to its boot configuration. + +What: /sys/bus/coresight/devices/<memory_map>.etm/mode +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls various modes supported by this ETM, for example + P0 instruction tracing, branch broadcast, cycle counting and + context ID tracing. + +What: /sys/bus/coresight/devices/<memory_map>.etm/pe +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls which PE to trace. + +What: /sys/bus/coresight/devices/<memory_map>.etm/event +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls the tracing of arbitrary events from bank 0 to 3. + +What: /sys/bus/coresight/devices/<memory_map>.etm/event_instren +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls the behavior of the events in bank 0 to 3. + +What: /sys/bus/coresight/devices/<memory_map>.etm/event_ts +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls the insertion of global timestamps in the trace + streams. + +What: /sys/bus/coresight/devices/<memory_map>.etm/syncfreq +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls how often trace synchronization requests occur. + +What: /sys/bus/coresight/devices/<memory_map>.etm/cyc_threshold +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Sets the threshold value for cycle counting. + +What: /sys/bus/coresight/devices/<memory_map>.etm/bb_ctrl +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls which regions in the memory map are enabled to + use branch broadcasting. + +What: /sys/bus/coresight/devices/<memory_map>.etm/event_vinst +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls instruction trace filtering. + +What: /sys/bus/coresight/devices/<memory_map>.etm/s_exlevel_vinst +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) In Secure state, each bit controls whether instruction + tracing is enabled for the corresponding exception level. + +What: /sys/bus/coresight/devices/<memory_map>.etm/ns_exlevel_vinst +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) In non-secure state, each bit controls whether instruction + tracing is enabled for the corresponding exception level. + +What: /sys/bus/coresight/devices/<memory_map>.etm/addr_idx +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Select which address comparator or pair (of comparators) to + work with. + +What: /sys/bus/coresight/devices/<memory_map>.etm/addr_instdatatype +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls what type of comparison the trace unit performs. + +What: /sys/bus/coresight/devices/<memory_map>.etm/addr_single +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Used to setup single address comparator values. + +What: /sys/bus/coresight/devices/<memory_map>.etm/addr_range +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Used to setup address range comparator values. + +What: /sys/bus/coresight/devices/<memory_map>.etm/seq_idx +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Select which sequensor. + +What: /sys/bus/coresight/devices/<memory_map>.etm/seq_state +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Use this to set, or read, the sequencer state. + +What: /sys/bus/coresight/devices/<memory_map>.etm/seq_event +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Moves the sequencer state to a specific state. + +What: /sys/bus/coresight/devices/<memory_map>.etm/seq_reset_event +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Moves the sequencer to state 0 when a programmed event + occurs. + +What: /sys/bus/coresight/devices/<memory_map>.etm/cntr_idx +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Select which counter unit to work with. + +What: /sys/bus/coresight/devices/<memory_map>.etm/cntrldvr +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) This sets or returns the reload count value of the + specific counter. + +What: /sys/bus/coresight/devices/<memory_map>.etm/cntr_val +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) This sets or returns the current count value of the + specific counter. + +What: /sys/bus/coresight/devices/<memory_map>.etm/cntr_ctrl +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls the operation of the selected counter. + +What: /sys/bus/coresight/devices/<memory_map>.etm/res_idx +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Select which resource selection unit to work with. + +What: /sys/bus/coresight/devices/<memory_map>.etm/res_ctrl +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Controls the selection of the resources in the trace unit. + +What: /sys/bus/coresight/devices/<memory_map>.etm/ctxid_idx +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Select which context ID comparator to work with. + +What: /sys/bus/coresight/devices/<memory_map>.etm/ctxid_pid +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Get/Set the context ID comparator value to trigger on. + +What: /sys/bus/coresight/devices/<memory_map>.etm/ctxid_masks +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Mask for all 8 context ID comparator value + registers (if implemented). + +What: /sys/bus/coresight/devices/<memory_map>.etm/vmid_idx +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Select which virtual machine ID comparator to work with. + +What: /sys/bus/coresight/devices/<memory_map>.etm/vmid_val +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Get/Set the virtual machine ID comparator value to + trigger on. + +What: /sys/bus/coresight/devices/<memory_map>.etm/vmid_masks +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (RW) Mask for all 8 virtual machine ID comparator value + registers (if implemented). + +What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcoslsr +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Print the content of the OS Lock Status Register (0x304). + The value it taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpdcr +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Print the content of the Power Down Control Register + (0x310). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpdsr +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Print the content of the Power Down Status Register + (0x314). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trclsr +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Print the content of the SW Lock Status Register + (0xFB4). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcauthstatus +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Print the content of the Authentication Status Register + (0xFB8). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcdevid +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Print the content of the Device ID Register + (0xFC8). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcdevtype +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Print the content of the Device Type Register + (0xFCC). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpidr0 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Print the content of the Peripheral ID0 Register + (0xFE0). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpidr1 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Print the content of the Peripheral ID1 Register + (0xFE4). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpidr2 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Print the content of the Peripheral ID2 Register + (0xFE8). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpidr3 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Print the content of the Peripheral ID3 Register + (0xFEC). The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr0 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Returns the tracing capabilities of the trace unit (0x1E0). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr1 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Returns the tracing capabilities of the trace unit (0x1E4). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr2 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +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/<memory_map>.etm/trcidr/trcidr3 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +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/<memory_map>.etm/trcidr/trcidr4 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Returns how many resources the trace unit supports (0x1F0). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr5 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +Description: (R) Returns how many resources the trace unit supports (0x1F4). + The value is taken directly from the HW. + +What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr8 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +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/<memory_map>.etm/trcidr/trcidr9 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +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/<memory_map>.etm/trcidr/trcidr10 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +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/<memory_map>.etm/trcidr/trcidr11 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +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/<memory_map>.etm/trcidr/trcidr12 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +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/<memory_map>.etm/trcidr/trcidr13 +Date: April 2015 +KernelVersion: 4.01 +Contact: Mathieu Poirier <mathieu.poirier@linaro.org> +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. |