0001 What: /sys/bus/coresight/devices/<memory_map>.tmc/trigger_cntr
0002 Date: November 2014
0003 KernelVersion: 3.19
0004 Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
0005 Description: (RW) Disables write access to the Trace RAM by stopping the
0006 formatter after a defined number of words have been stored
0007 following the trigger event. Additional interface for this
0008 driver are expected to be added as it matures.
0009
0010 What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/rsz
0011 Date: March 2016
0012 KernelVersion: 4.7
0013 Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
0014 Description: (Read) Defines the size, in 32-bit words, of the local RAM buffer.
0015 The value is read directly from HW register RSZ, 0x004.
0016
0017 What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/sts
0018 Date: March 2016
0019 KernelVersion: 4.7
0020 Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
0021 Description: (Read) Shows the value held by the TMC status register. The value
0022 is read directly from HW register STS, 0x00C.
0023
0024 What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/rrp
0025 Date: March 2016
0026 KernelVersion: 4.7
0027 Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
0028 Description: (Read) Shows the value held by the TMC RAM Read Pointer register
0029 that is used to read entries from the Trace RAM over the APB
0030 interface. The value is read directly from HW register RRP,
0031 0x014.
0032
0033 What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/rwp
0034 Date: March 2016
0035 KernelVersion: 4.7
0036 Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
0037 Description: (Read) Shows the value held by the TMC RAM Write Pointer register
0038 that is used to sets the write pointer to write entries from
0039 the CoreSight bus into the Trace RAM. The value is read directly
0040 from HW register RWP, 0x018.
0041
0042 What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/trg
0043 Date: March 2016
0044 KernelVersion: 4.7
0045 Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
0046 Description: (Read) Similar to "trigger_cntr" above except that this value is
0047 read directly from HW register TRG, 0x01C.
0048
0049 What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/ctl
0050 Date: March 2016
0051 KernelVersion: 4.7
0052 Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
0053 Description: (Read) Shows the value held by the TMC Control register. The value
0054 is read directly from HW register CTL, 0x020.
0055
0056 What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/ffsr
0057 Date: March 2016
0058 KernelVersion: 4.7
0059 Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
0060 Description: (Read) Shows the value held by the TMC Formatter and Flush Status
0061 register. The value is read directly from HW register FFSR,
0062 0x300.
0063
0064 What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/ffcr
0065 Date: March 2016
0066 KernelVersion: 4.7
0067 Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
0068 Description: (Read) Shows the value held by the TMC Formatter and Flush Control
0069 register. The value is read directly from HW register FFCR,
0070 0x304.
0071
0072 What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/mode
0073 Date: March 2016
0074 KernelVersion: 4.7
0075 Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
0076 Description: (Read) Shows the value held by the TMC Mode register, which
0077 indicate the mode the device has been configured to enact. The
0078 The value is read directly from the MODE register, 0x028.
0079
0080 What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/devid
0081 Date: March 2016
0082 KernelVersion: 4.7
0083 Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
0084 Description: (Read) Indicates the capabilities of the Coresight TMC.
0085 The value is read directly from the DEVID register, 0xFC8,
0086
0087 What: /sys/bus/coresight/devices/<memory_map>.tmc/buffer_size
0088 Date: December 2018
0089 KernelVersion: 4.19
0090 Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
0091 Description: (RW) Size of the trace buffer for TMC-ETR when used in SYSFS
0092 mode. Writable only for TMC-ETR configurations. The value
0093 should be aligned to the kernel pagesize.
