ixperfprofacc.h

OMAP2530 uboot source code

 *
 * @param	samplingRate UINT32 [in] - sampling rate is the number of
 *       	clock counts before a counter overflow interrupt is generated,
 *        	at which, a sample is taken; the rate specified cannot be greater
 *          than the counter size of 32bits or set to zero.
 * @param 	clkCntDiv BOOL [in] - enables/disables the clock divider. When 
 *		true, the divider is enabled and the clock count will be incremented
 *          by one at each 64th processor clock cycle.  When false, the divider
 *			is disabled and the clock count will be incremented at every 
 *			processor clock cycle. 
 *
 * This API starts the time based sampling to determine the frequency with 
 * which lines of code are being executed.  Sampling is done at the rate 
 * specified by the user.  At each sample,the value of the program counter
 * is determined.  Each of these occurrences are recorded to determine the 
 * frequency with which the Xscale code is being executed. This API has to be 
 * called before ixPerfProfAccXscalePmuTimeSampStop can be called.
 *
 * @return
 *	- IX_PERFPROF_ACC_STATUS_SUCCESS if time based sampling is started 
 *        successfully
 *	- IX_PERFPROF_ACC_STATUS_FAIL if unable to start the sampling
 * 	- IX_PERFPROF_ACC_STATUS_ANOTHER_UTIL_IN_PROGRESS - another utility is 
 *	  running 
 *              
 * @li   Reentrant    : no
 * @li   ISR Callable : no
 *
 */
PUBLIC IxPerfProfAccStatus 
ixPerfProfAccXscalePmuTimeSampStart(
	UINT32 samplingRate, 
	BOOL clkCntDiv);

/**
 * @ingroup IxPerfProfAcc
 *
 * @fn ixPerfProfAccXscalePmuTimeSampStop(
   IxPerfProfAccXscalePmuEvtCnt *clkCount,
   IxPerfProfAccXscalePmuSamplePcProfile *timeProfile)
 *
 * @brief Stops the time based sampling
 *
 * @param	*clkCount @ref IxPerfProfAccXscalePmuEvtCnt [out]  - pointer to the 
 *			struct containing the final clock count and its overflow.  It is the
 *			user's responsibility to allocate the memory for this pointer.
 * @param 	*timeProfile @ref IxPerfProfAccXscalePmuSamplePcProfile [out] -
 *          pointer to the array of profiles for each program counter value;
 *          the user should set the size of the array to 
 *			IX_PERFPROF_ACC_XSCALE_PMU_MAX_PROFILE_SAMPLES.  It is the user's 
 * 			responsibility to allocate the memory for this pointer.
 *
 * This API stops the time based sampling.  The results are stored in the 
 * pointers allocated by the user.  It can only be called once
 * ixPerfProfAccXscalePmuTimeSampStart has been called.
 *
 * @return
 *	- IX_PERFPROF_ACC_STATUS_SUCCESS if time based sampling is stopped 
 *        successfully
 *	- IX_PERFPROF_ACC_STATUS_XSCALE_PMU_START_NOT_CALLED if
 *	  ixPerfProfAccXscalePmuTimeSampStart not called first
 *              
 * @li   Reentrant    : no
 * @li   ISR Callable : no
 *
 */
PUBLIC IxPerfProfAccStatus
ixPerfProfAccXscalePmuTimeSampStop(
	IxPerfProfAccXscalePmuEvtCnt *clkCount,
	IxPerfProfAccXscalePmuSamplePcProfile *timeProfile);

/**
 * @ingroup IxPerfProfAcc
 *
 * @fn ixPerfProfAccXscalePmuEventSampStart(
   UINT32 numEvents,
   IxPerfProfAccXscalePmuEvent pmuEvent1,
   UINT32 eventRate1,
   IxPerfProfAccXscalePmuEvent pmuEvent2,
   UINT32 eventRate2,
   IxPerfProfAccXscalePmuEvent pmuEvent3,
   UINT32 eventRate3,
   IxPerfProfAccXscalePmuEvent pmuEvent4,
   UINT32 eventRate4)
 *
 * @brief Starts the event based sampling
 *
 * @param	numEvents UINT32 [in] - the number of PMU events that are 
 *	  		to be monitored as specified by the user. The value should be
 *          between 1-4 events at a time.
 * @param 	pmuEvent1 @ref IxPerfProfAccXscalePmuEvent [in] - the specific PMU 
 *    		event to be monitored by counter 1
 * @param 	eventRate1 UINT32 [in] - sampling rate of counter 1. The rate is 
 *			the number of events before a sample taken.  If 0 is specified, the
 *			the full counter value (0xFFFFFFFF) is used. The rate must not be 
 *			greater than the full counter value.
 * @param 	pmuEvent2 @ref IxPerfProfAccXscalePmuEvent [in] - the specific PMU 
 *    		event to be monitored by counter 2 
 * @param 	eventRate2 UINT32 [in] -  sampling rate of counter 2. The rate is 
 *			the number of events before a sample taken. If 0 is specified, the 
 *			full counter value (0xFFFFFFFF) is used. The rate must not be 
 *          greater than the full counter value.
 * @param 	pmuEvent3 @ref IxPerfProfAccXscalePmuEvent [in] - the specific PMU 
 *    		event to be monitored by counter 3
 * @param 	eventRate3 UINT32 [in] -  sampling rate of counter 3. The rate is 
 *			the number of events before a sample taken.  If 0 is specified, the 
 *			full counter value (0xFFFFFFFF) is used.  The rate must not be 
 *          greater than the full counter value.
 * @param 	pmuEvent4 @ref IxPerfProfAccXscalePmuEvent [in] - the specific PMU 
 *    		event to be monitored by counter 4
 * @param 	eventRate4 UINT32 [in] -  sampling rate of counter 4. The rate is 
 *			the number of events before a sample taken.  If 0 is specified, the 
 *			full counter value (0xFFFFFFFF) is used. The rate must not be 
 *          greater than the full counter value.
 *
 * Starts the event based sampling to determine the frequency with 
 * which events are being executed.  The sampling rate is the number of events,
 * as specified by the user,  before a counter overflow interrupt is 
 * generated.  A sample is taken at each counter overflow interrupt.  At each
 * sample,the value of the program counter determines the corresponding 
 * location in the code.  Each of these occurrences are recorded to determine 
 * the frequency with which the Xscale code in each event is executed. This API
 * has to be called before ixPerfProfAccXscalePmuEventSampStop can be called.
 *
 * @return
 *	- IX_PERFPROF_ACC_STATUS_SUCCESS if event based sampling is started 
 *	  successfully
 *	- IX_PERFPROF_ACC_STATUS_FAIL if unable to start the sampling
 *	- IX_PERFPROF_ACC_STATUS_XSCALE_PMU_NUM_INVALID if the number of events 
 *        specified is out of the valid range
 *	- IX_PERFPROF_ACC_STATUS_XSCALE_PMU_EVENT_INVALID if the value of the
 *        PMU event specified does not exist
 *      - IX_PERFPROF_ACC_STATUS_ANOTHER_UTIL_IN_PROGRESS - another utility is
 *        running 
 *              
 * @li   Reentrant    : no
 * @li   ISR Callable : no
 *
 */
PUBLIC IxPerfProfAccStatus
ixPerfProfAccXscalePmuEventSampStart(
	UINT32 numEvents,
	IxPerfProfAccXscalePmuEvent pmuEvent1,
	UINT32 eventRate1,
    IxPerfProfAccXscalePmuEvent pmuEvent2,
    UINT32 eventRate2,
    IxPerfProfAccXscalePmuEvent pmuEvent3,
    UINT32 eventRate3,
    IxPerfProfAccXscalePmuEvent pmuEvent4,
    UINT32 eventRate4);

/**
 * @ingroup IxPerfProfAcc
 *
 * @fn ixPerfProfAccXscalePmuEventSampStop(
   IxPerfProfAccXscalePmuSamplePcProfile *eventProfile1,
   IxPerfProfAccXscalePmuSamplePcProfile *eventProfile2,
   IxPerfProfAccXscalePmuSamplePcProfile *eventProfile3,
   IxPerfProfAccXscalePmuSamplePcProfile *eventProfile4)
 *
 * @brief Stops the event based sampling
 *
 * @param       *eventProfile1 @ref IxPerfProfAccXscalePmuSamplePcProfile [out] - 
 *              pointer to the array of profiles for each program counter value;
 *              the user should set the size of the array to 
 *				IX_PERFPROF_ACC_XSCALE_PMU_MAX_PROFILE_SAMPLES. It is the 
 *				users's responsibility to allocate memory for this pointer.
 * @param       *eventProfile2 @ref IxPerfProfAccXscalePmuSamplePcProfile [out] - 
 *              pointer to the array of profiles for each program counter value;
 *              the user should set the size of the array to 
 *				IX_PERFPROF_ACC_XSCALE_PMU_MAX_PROFILE_SAMPLES.  It is the 
 *				users's responsibility to allocate memory for this pointer.
 * @param       *eventProfile3 @ref IxPerfProfAccXscalePmuSamplePcProfile [out] - 
 *              pointer to the array of profiles for each program counter value;
 *              the user should set the size of the array to 
 *				IX_PERFPROF_ACC_XSCALE_PMU_MAX_PROFILE_SAMPLES.  It is the 
 *				users's responsibility to allocate memory for this pointer.
 * @param       *eventProfile4 @ref IxPerfProfAccXscalePmuSamplePcProfile [out] - 
 *              pointer to the array of profiles for each program counter value;
 *              the user should set the size of the array to 
 *				IX_PERFPROF_ACC_XSCALE_PMU_MAX_PROFILE_SAMPLES.  It is the 
 *				users's responsibility to allocate memory for this pointer.
 *
 * This API stops the event based sampling.  The results are stored in the 
 * pointers allocated by the user.  It can only be called once 
 * ixPerfProfAccEventSampStart has been called.
 *
 * @return 
 *      - IX_PERFPROF_ACC_STATUS_SUCCESS if event based sampling is stopped 
 *         successfully
 *      - IX_PERFPROF_ACC_STATUS_XSCALE_PMU_START_NOT_CALLED if
 *          ixPerfProfAccEventSampStart not called first.
 *              
 * @li   Reentrant    : no
 * @li   ISR Callable : no
 *
 */
PUBLIC IxPerfProfAccStatus 
ixPerfProfAccXscalePmuEventSampStop(
    IxPerfProfAccXscalePmuSamplePcProfile *eventProfile1,
    IxPerfProfAccXscalePmuSamplePcProfile *eventProfile2,
    IxPerfProfAccXscalePmuSamplePcProfile *eventProfile3,
    IxPerfProfAccXscalePmuSamplePcProfile *eventProfile4);

/**                                                                             
 * @ingroup IxPerfProfAcc                                                      
 *                                                                              
 * @fn ixPerfProfAccXscalePmuResultsGet(IxPerfProfAccXscalePmuResults *results)     
 *                                                                              
 * @brief Reads the current value of the counters and their overflow                                        
 *                                                                              
 * @param *results @ref IxPerfProfAccXscalePmuResults [out] - pointer to the 
          results struct.  It is the user's responsibility to allocate memory
          for this pointer
 *                                                                              
 * This API reads the value of all four event counters and the clock counter, 
 * and the associated overflows.  It does not give results associated with 
 * sampling, i.e. PC and their frequencies.  This API can be called at any time
 * once a process has been started. If it is called before a process has started
 * the user should be aware that the values it contains are default values and 
 * might be meaningless.  The values of the counters are stored in the pointer 
 * allocated by the client.
 *                                                                    
 * @return - none
 *              
 * @li   Reentrant    : no
 * @li   ISR Callable : no
 *
 */                                                                             
PUBLIC void                                                     
ixPerfProfAccXscalePmuResultsGet(IxPerfProfAccXscalePmuResults *results);    

/**
 * @ingroup IxPerfProfAcc
 * 
 * @fn ixPerfProfAccBusPmuStart(
        IxPerfProfAccBusPmuMode mode, 
        IxPerfProfAccBusPmuEventCounters1 pecEvent1,
        IxPerfProfAccBusPmuEventCounters2 pecEvent2, 
        IxPerfProfAccBusPmuEventCounters3 pecEvent3, 
        IxPerfProfAccBusPmuEventCounters4 pecEvent4,
        IxPerfProfAccBusPmuEventCounters5 pecEvent5, 
        IxPerfProfAccBusPmuEventCounters6 pecEvent6, 
        IxPerfProfAccBusPmuEventCounters7 pecEvent7)
 * @brief Initializes all the counters and selects events to be monitored.
 *
 * Function initializes all the counters and assigns the events associated 
 * with the counters. Users send in the mode and events they want to count.
 * This API verifies if the combination chosen is appropriate 
 * and sets all the registers accordingly. Selecting HALT mode will result
 * in an error. User should use ixPerfProfAccBusPmuStop() to HALT. 
 * 
 * 
 * @param mode @ref IxPerfProfAccStateBusPmuMode [in] - Mode selection.
 * @param pecEvent1 @ref IxPerfProfAccBusPmuEventCounters1 [in] - Event for PEC1.
 * @param pecEvent2 @ref IxPerfProfAccBusPmuEventCounters2 [in] - Event for PEC2.
 * @param pecEvent3 @ref IxPerfProfAccBusPmuEventCounters3 [in] - Event for PEC3.
 * @param pecEvent4 @ref IxPerfProfAccBusPmuEventCounters4 [in] - Event for PEC4.
 * @param pecEvent5 @ref IxPerfProfAccBusPmuEventCounters5 [in] - Event for PEC5.
 * @param pecEvent6 @ref IxPerfProfAccBusPmuEventCounters6 [in] - Event for PEC6.
 * @param pecEvent7 @ref IxPerfProfAccBusPmuEventCounters7 [in] - Event for PEC7.
 *
 * @return 
 *      - IX_PERFPROF_ACC_STATUS_SUCCESS - Initialization executed 
 *        successfully.  
 *      - IX_PERFPROF_ACC_STATUS_BUS_PMU_MODE_ERROR - Error in selection of 
 * 		  mode. Only NORTH, SOUTH and SDRAM modes are allowed. 
 *      - IX_PERFPROF_ACC_STATUS_BUS_PMU_PEC1_ERROR - Error in selection of 
 *        event for PEC1
 *      - IX_PERFPROF_ACC_STATUS_BUS_PMU_PEC2_ERROR - Error in selection of 
 *        event for PEC2 
 *      - IX_PERFPROF_ACC_STATUS_BUS_PMU_PEC3_ERROR - Error in selection of 
 *        event for PEC3
 *      - IX_PERFPROF_ACC_STATUS_BUS_PMU_PEC4_ERROR - Error in selection of 
 *        event for PEC4
 *      - IX_PERFPROF_ACC_STATUS_BUS_PMU_PEC5_ERROR - Error in selection of 
 *        event for PEC5
 *      - IX_PERFPROF_ACC_STATUS_BUS_PMU_PEC6_ERROR - Error in selection of 
 *        event for PEC6
 *      - IX_PERFPROF_ACC_STATUS_BUS_PMU_PEC7_ERROR - Error in selection of 
 *        event for PEC7
 * 		- IX_PERFPROF_ACC_STATUS_ANOTHER_UTIL_IN_PROGRESS - another utility 
 * 		  is running
 * 		- IX_PERFPROF_ACC_STATUS_FAIL - Failed to start because interrupt 
 * 		  service routine fails to bind.  
 *              
 * @li   Reentrant    : no
 * @li   ISR Callable : no
 *
 **/
PUBLIC 
IxPerfProfAccStatus ixPerfProfAccBusPmuStart (
        IxPerfProfAccBusPmuMode mode, 
        IxPerfProfAccBusPmuEventCounters1 pecEvent1,
        IxPerfProfAccBusPmuEventCounters2 pecEvent2, 
        IxPerfProfAccBusPmuEventCounters3 pecEvent3, 
        IxPerfProfAccBusPmuEventCounters4 pecEvent4,
        IxPerfProfAccBusPmuEventCounters5 pecEvent5, 
        IxPerfProfAccBusPmuEventCounters6 pecEvent6, 
        IxPerfProfAccBusPmuEventCounters7 pecEvent7);

/**
 * @ingroup IxPerfProfAcc
 * 
 * @fn ixPerfProfAccBusPmuStop(void)
 * @brief Stops all counters. 
 * 
 * This function stops all the PECs by setting the halt bit in the ESR.
 *
 *
 * @return 
 *      - IX_PERFPROF_ACC_STATUS_SUCCESS - Counters successfully halted.
 *      - IX_PERFPROF_ACC_STATUS_FAIL - Counters could'nt be halted. 
 *		- IX_PERFPROF_ACC_STATUS_BUS_PMU_START_NOT_CALLED - the 
 * 		  ixPerfProfAccBusPmuStart() function is not called.
 *              
 * @li   Reentrant    : no
 * @li   ISR Callable : no
 *
 **/
PUBLIC IxPerfProfAccStatus 
ixPerfProfAccBusPmuStop (void);

/**
 * @ingroup IxPerfProfAcc
 * 
 * @fn ixPerfProfAccBusPmuResultsGet (
		IxPerfProfAccBusPmuResults *busPmuResults)
 * @brief Gets values of all counters 
 * 
 * This function is responsible for getting all the counter values from the 
 * lower API and putting it into an array for the user.
 *
 * @param *busPmuResults @ref IxPerfProfAccBusPmuResults [out]
 *           - Pointer to a structure of arrays to store all counter values.
 *
 * @return  none
 *              
 * @li   Reentrant    : no
 * @li   ISR Callable : no