axipmon: xaxipmon_ocm_example.c File Reference

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xaxipmon_ocm_example.c File Reference

## Overview

This file contains a design example showing how to use the driver APIs of the AXI Performance Monitor driver to measure the following metrics captured at OCM of Zynq MP:

      - Write Transcation Count
      - Write Byte Count
      - Read Transcation Count
      - Read Byte Count

    MODIFICATION HISTORY:

    Ver   Who    Date     Changes

    1.00a bss    04/01/15 First release
    6.5   sg     11/02/16 Updated device ID to OCM PSU APM ID
          ms     01/23/17 Modified xil_printf statement in main function to
                          ensure that "Successfully ran" and "Failed" strings are
                          available in all examples. This is a fix for CR-965028.

## Functions
int | ApmCheck (u32 *BufferPtr, u16 Wtx, u16 Wbc, u16 Rtx, u16 Rbc)
| Checks the metrics passed to this function are same as collected by APM. More...
void | OcmTransaction ()
| Generates write and read transcations to OCM and reads metrics captured by APM. More...
int | ApmMetricConfig (XAxiPmon *InstancePtr, u8 slot, u8 Metric1, u8 Metric2)
| Sets Counter 0 and Counter 1 for collecting the passed metrics. More...
void | ReadMetrics (XAxiPmon *InstancePtr, u32 *BufferPtr, u8 Counter1, u8 Counter2)
| Reads metrics from APM counters to buffer. More...
int | main (void)
| Main function that invokes the example in this file. More...

## Function Documentation

int ApmCheck | ( | u32 * | BufferPtr,
|  | u16 | Wtx,
|  | u16 | Wbc,
|  | u16 | Rtx,
|  | u16 | Rbc
| ) |  |

Checks the metrics passed to this function are same as collected by APM.

Parameters

  BufferPtr | is pointer to buffer containing captured metrics.
  Wtx | is Write transaction count value to be checked.
  Wbc | is Write byte count value to be checked.
  Rtx | is Read transaction count value to be checked.
  Rbc | is Read byte count value to be checked.

Returns
  - XST_SUCCESS if metrics passed are equal to metrics collected by APM.
  - XST_FAILURE if any of the metrics passed is not equal to metrics collected by APM.

Note
  None.

Referenced by main().

int ApmMetricConfig | ( | XAxiPmon * | InstancePtr,
|  | u8 | slot,
|  | u8 | Metric1,
|  | u8 | Metric2
| ) |  |

Sets Counter 0 and Counter 1 for collecting the passed metrics.

Parameters

  InstancePtr | is pointer to APM instance.
  Slot | is APM slot.
  Metric1 | is Metric to be captured by Counter 1
  Metric2 | is Metric to be captured by Counter 2

Returns
  - XST_SUCCESS on success.
  - XST_FAILURE on failure.

Note
  None.

References XAPM_METRIC_COUNTER_0, XAPM_METRIC_COUNTER_1, XAxiPmon_EnableMetricsCounter(), XAxiPmon_ResetGlobalClkCounter(), XAxiPmon_ResetMetricCounter(), XAxiPmon_SetMetrics(), and XAxiPmon_StartCounters().

Referenced by OcmTransaction().

int main | ( | void |  | ) |

Main function that invokes the example in this file.

Parameters

  None. |

Returns
  - XST_SUCCESS if the example has completed successfully.
  - XST_FAILURE if the example has failed.

Note
  None.

References ApmCheck(), XAxiPmon_Config::BaseAddress, OcmTransaction(), XAxiPmon_CfgInitialize(), XAxiPmon_DisableMetricsCounter(), and XAxiPmon_LookupConfig().

void OcmTransaction | ( |  | ) |

Generates write and read transcations to OCM and reads metrics captured by APM.

Parameters

  None. |

Returns
  None.

Note
  None.

References ApmMetricConfig(), ReadMetrics(), XAPM_METRIC_COUNTER_0, XAPM_METRIC_COUNTER_1, XAPM_METRIC_SET_0, XAPM_METRIC_SET_1, XAPM_METRIC_SET_2, and XAPM_METRIC_SET_3.

Referenced by main().

void ReadMetrics | ( | XAxiPmon * | InstancePtr,
|  | u32 * | BufferPtr,
|  | u8 | Counter1,
|  | u8 | Counter2
| ) |  |

Reads metrics from APM counters to buffer.

Parameters

  InstancePtr | is pointer to APM instance.
  BufferPtr | is pointer to buffer.
  Counter1 | is counter number.
  Counter2 | is counter number.

Returns
  None.

Note
  None.

References XAxiPmon_GetMetricCounter(), and XAxiPmon_StopCounters().

Referenced by OcmTransaction().