From: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx> Add short documentation for FlexNoc Performance Monitor driver. Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx> --- 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
