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/*****************************************************************************/
/**
*
* @file xpm_counter.c
*
* This file contains APIs for configuring and controlling the Cortex-R5
* Performance Monitor Events. For more information about the event counters,
* see xpm_counter.h.
*
* <pre>
* MODIFICATION HISTORY:
*
* Ver   Who  Date     Changes
* ----- ---- -------- -----------------------------------------------
* 5.00  pkp  02/10/14 Initial version
* </pre>
*
******************************************************************************/

/***************************** Include Files *********************************/

#include "xpm_counter.h"

/************************** Constant Definitions ****************************/

/**************************** Type Definitions ******************************/

typedef const u32 PmcrEventCfg32[XPM_CTRCOUNT];

/***************** Macros (Inline Functions) Definitions ********************/

/************************** Variable Definitions *****************************/


/************************** Function Prototypes ******************************/

void Xpm_DisableEventCounters(void);
void Xpm_EnableEventCounters (void);
void Xpm_ResetEventCounters (void);

/******************************************************************************/

/****************************************************************************/
/**
*
* This function disables the Cortex R5 event counters.
*
* @param	None.
*
* @return	None.
*
* @note		None.
*
*****************************************************************************/
void Xpm_DisableEventCounters(void)
{
	/* Disable the event counters */
	mtcp(XREG_CP15_COUNT_ENABLE_CLR, 0x3f);
}

/****************************************************************************/
/**
*
* This function enables the Cortex R5 event counters.
*
* @param	None.
*
* @return	None.
*
* @note		None.
*
*****************************************************************************/
void Xpm_EnableEventCounters(void)
{
	/* Enable the event counters */
	mtcp(XREG_CP15_COUNT_ENABLE_SET, 0x3f);
}

/****************************************************************************/
/**
*
* This function resets the Cortex R5 event counters.
*
* @param	None.
*
* @return	None.
*
* @note		None.
*
*****************************************************************************/
void Xpm_ResetEventCounters(void)
{
	u32 Reg;

#ifdef __GNUC__
	Reg = mfcp(XREG_CP15_PERF_MONITOR_CTRL);
#else
	{ register u32 C15Reg __asm(XREG_CP15_PERF_MONITOR_CTRL);
	  Reg = C15Reg; }
#endif
	Reg |= (1U << 2U); /* reset event counters */
	mtcp(XREG_CP15_PERF_MONITOR_CTRL, Reg);
}

/****************************************************************************/
/**
*
* This function configures the Cortex R5 event counters controller, with the
* event codes, in a configuration selected by the user and enables the counters.
*
* @param	PmcrCfg is configuration value based on which the event counters
*		are configured.
*		Use XPM_CNTRCFG* values defined in xpm_counter.h.
*
* @return	None.
*
* @note		None.
*
*****************************************************************************/
void Xpm_SetEvents(s32 PmcrCfg)
{
	u32 Counter;
	static PmcrEventCfg32 PmcrEvents[] = {
		{
			XPM_EVENT_SOFTINCR,
			XPM_EVENT_INSRFETCH_CACHEREFILL,
			XPM_EVENT_INSTRFECT_TLBREFILL,
			XPM_EVENT_DATA_CACHEREFILL,
			XPM_EVENT_DATA_CACHEACCESS,
			XPM_EVENT_DATA_TLBREFILL
		},
		{
			XPM_EVENT_DATA_READS,
			XPM_EVENT_DATA_WRITE,
			XPM_EVENT_EXCEPTION,
			XPM_EVENT_EXCEPRETURN,
			XPM_EVENT_CHANGECONTEXT,
			XPM_EVENT_SW_CHANGEPC
		},
		{
			XPM_EVENT_IMMEDBRANCH,
			XPM_EVENT_UNALIGNEDACCESS,
			XPM_EVENT_BRANCHMISS,
			XPM_EVENT_CLOCKCYCLES,
			XPM_EVENT_BRANCHPREDICT,
			XPM_EVENT_JAVABYTECODE
		},
		{
			XPM_EVENT_SWJAVABYTECODE,
			XPM_EVENT_JAVABACKBRANCH,
			XPM_EVENT_COHERLINEMISS,
			XPM_EVENT_COHERLINEHIT,
			XPM_EVENT_INSTRSTALL,
			XPM_EVENT_DATASTALL
		},
		{
			XPM_EVENT_MAINTLBSTALL,
			XPM_EVENT_STREXPASS,
			XPM_EVENT_STREXFAIL,
			XPM_EVENT_DATAEVICT,
			XPM_EVENT_NODISPATCH,
			XPM_EVENT_ISSUEEMPTY
		},
		{
			XPM_EVENT_INSTRRENAME,
			XPM_EVENT_PREDICTFUNCRET,
			XPM_EVENT_MAINEXEC,
			XPM_EVENT_SECEXEC,
			XPM_EVENT_LDRSTR,
			XPM_EVENT_FLOATRENAME
		},
		{
			XPM_EVENT_NEONRENAME,
			XPM_EVENT_PLDSTALL,
			XPM_EVENT_WRITESTALL,
			XPM_EVENT_INSTRTLBSTALL,
			XPM_EVENT_DATATLBSTALL,
			XPM_EVENT_INSTR_uTLBSTALL
		},
		{
			XPM_EVENT_DATA_uTLBSTALL,
			XPM_EVENT_DMB_STALL,
			XPM_EVENT_INT_CLKEN,
			XPM_EVENT_DE_CLKEN,
			XPM_EVENT_INSTRISB,
			XPM_EVENT_INSTRDSB
		},
		{
			XPM_EVENT_INSTRDMB,
			XPM_EVENT_EXTINT,
			XPM_EVENT_PLE_LRC,
			XPM_EVENT_PLE_LRS,
			XPM_EVENT_PLE_FLUSH,
			XPM_EVENT_PLE_CMPL
		},
		{
			XPM_EVENT_PLE_OVFL,
			XPM_EVENT_PLE_PROG,
			XPM_EVENT_PLE_LRC,
			XPM_EVENT_PLE_LRS,
			XPM_EVENT_PLE_FLUSH,
			XPM_EVENT_PLE_CMPL
		},
		{
			XPM_EVENT_DATASTALL,
			XPM_EVENT_INSRFETCH_CACHEREFILL,
			XPM_EVENT_INSTRFECT_TLBREFILL,
			XPM_EVENT_DATA_CACHEREFILL,
			XPM_EVENT_DATA_CACHEACCESS,
			XPM_EVENT_DATA_TLBREFILL
		},
	};
	const u32 *ptr = PmcrEvents[PmcrCfg];

	Xpm_DisableEventCounters();

	for(Counter = 0U; Counter < XPM_CTRCOUNT; Counter++) {

		/* Selecet event counter */
		mtcp(XREG_CP15_EVENT_CNTR_SEL, Counter);

		/* Set the event */
		mtcp(XREG_CP15_EVENT_TYPE_SEL, ptr[Counter]);
	}

	Xpm_ResetEventCounters();
	Xpm_EnableEventCounters();
}

/****************************************************************************/
/**
*
* This function disables the event counters and returns the counter values.
*
* @param	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.
*
* @return	None.
*
* @note		None.
*
*****************************************************************************/
void Xpm_GetEventCounters(u32 *PmCtrValue)
{
	u32 Counter;

	Xpm_DisableEventCounters();

	for(Counter = 0U; Counter < XPM_CTRCOUNT; Counter++) {

		mtcp(XREG_CP15_EVENT_CNTR_SEL, Counter);
#ifdef __GNUC__
		PmCtrValue[Counter] = mfcp(XREG_CP15_PERF_MONITOR_COUNT);
#else
		{ register u32 Cp15Reg __asm(XREG_CP15_PERF_MONITOR_COUNT);
		  PmCtrValue[Counter] = Cp15Reg; }
#endif
	}
}