Add short documentation for FlexNoc Performance Monitor driver. Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx> --- v2: patch added Documentation/misc-devices/xilinx_flex.txt | 66 ++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 Documentation/misc-devices/xilinx_flex.txt diff --git a/Documentation/misc-devices/xilinx_flex.txt b/Documentation/misc-devices/xilinx_flex.txt new file mode 100644 index 0000000..c075934 --- /dev/null +++ b/Documentation/misc-devices/xilinx_flex.txt @@ -0,0 +1,66 @@ +Kernel driver xilinx_flex +============================ + +Supported chips: +Versal SOC + +Author: + Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx> + +Description +----------- + +Versal uses the Arteris FlexNoC interconnect instead of the ARM NIC. FlexNoC +provides the capability to integrate performance counters in the interconnect. +It has configurable probe points to monitor the packet and forwards it to +observer for logging. It supports read and write transaction counts for +request and response. + +Features: +---> Run-time programmable selection of packet probe points. +---> Recording of traffic and link statistics. +---> Separate read and write response and request count. + +SYSFS: + +counteridfpd + RW - shows the counter number selected for the FPD Flexnoc. + +counterfpd_rdreq + RO - shows the read request count for the FPD counters. + +counterfpdsrc + WO - sets the source of the FPD counter. + +counterfpd_wrrsp + RO - shows the write response count for the FPD counters. + +counterfpd_rdrsp + RO - shows the read response count for the FPD counters. + +counterfpd_wrreq + RO - shows the write request count for the FPD counters. + +counterfpdport + WO - sets the port number selected for the FPD Flexnoc. + +counteridlpd + RW - shows the counter number selected for the LPD Flexnoc. + +counterlpdport + WO - sets the port number selected for the LPD Flexnoc. + +counterlpd_rdreq + RO - shows the read request count for the LPD counters. + +counterlpd_wrreq + RO - shows the write request count for the LPD counters. + +counterlpd_wrrsp + RO - shows the write response count for the LPD counters. + +counterlpdsrc + WO - sets the source of the LPD counter. + +counterlpd_rdrsp + RO - shows the read response count for the LPD counters. -- 2.1.1 This email and any attachments are intended for the sole use of the named recipient(s) and contain(s) confidential information that may be proprietary, privileged or copyrighted under applicable law. If you are not the intended recipient, do not read, copy, or forward this email message or any attachments. Delete this email message and any attachments immediately.
