xpm_counter.h File Reference

#include <stdint.h>
#include "xpseudo_asm.h"
#include "xil_types.h"

Functions
void	Xpm_SetEvents (int PmcrCfg)
void	Xpm_GetEventCounters (u32 *PmCtrValue)

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Detailed Description

This header file contains APIs for configuring and controlling the Cortex-A9 Performance Monitor Events. Cortex-A9 Performance Monitor has 6 event counters which can be used to count a variety of events described in Coretx-A9 TRM. This file defines configurations, where value configures the event counters to count a set of events.

Xpm_SetEvents can be used to set the event counters to count a set of events and Xpm_GetEventCounters can be used to read the counter values.

Note:

This file doesn't handle the Cortex-A9 cycle counter, as the cycle counter is being used for time keeping.

 MODIFICATION HISTORY:

 Ver   Who  Date     Changes
 ----- ---- -------- -----------------------------------------------
 1.00a sdm  07/11/11 First release
 

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Function Documentation

void Xpm_GetEventCounters (  u32 *  PmCtrValue  )

This function disables the event counters and returns the counter values. Parameters: PmCtrValue  is a pointer to an array of type u32 PmCtrValue[6]. It is an output parameter which is used to return the PM counter values. Returns: None. Note: None.

void Xpm_SetEvents (  int  PmcrCfg  )

This function configures the Cortex A9 event counters controller, with the event codes, in a configuration selected by the user and enables the counters. Parameters: PmcrCfg  is configuration value based on which the event counters are configured. Use XPM_CNTRCFG* values defined in xpm_counter.h. Returns: None. Note: None.

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