/*******************************************************************************
 * Tracealyzer v2.7.0 Recorder Library
 * Percepio AB, www.percepio.com
 *
 * trcHardwarePort.h
 *
 * Contains together with trcHardwarePort.c all hardware portability issues of
 * the trace recorder library.
 *
 * Terms of Use
 * This software is copyright Percepio AB. The recorder library is free for
 * use together with Percepio products. You may distribute the recorder library
 * in its original form, including modifications in trcPort.c and trcPort.h
 * given that these modification are clearly marked as your own modifications
 * and documented in the initial comment section of these source files.
 * This software is the intellectual property of Percepio AB and may not be
 * sold or in other ways commercially redistributed without explicit written
 * permission by Percepio AB.
 *
 * Disclaimer
 * The trace tool and recorder library is being delivered to you AS IS and
 * Percepio AB makes no warranty as to its use or performance. Percepio AB does
 * not and cannot warrant the performance or results you may obtain by using the
 * software or documentation. Percepio AB make no warranties, express or
 * implied, as to noninfringement of third party rights, merchantability, or
 * fitness for any particular purpose. In no event will Percepio AB, its
 * technology partners, or distributors be liable to you for any consequential,
 * incidental or special damages, including any lost profits or lost savings,
 * even if a representative of Percepio AB has been advised of the possibility
 * of such damages, or for any claim by any third party. Some jurisdictions do
 * not allow the exclusion or limitation of incidental, consequential or special
 * damages, or the exclusion of implied warranties or limitations on how long an
 * implied warranty may last, so the above limitations may not apply to you.
 *
 * Tabs are used for indent in this file (1 tab = 4 spaces)
 *
 * Copyright Percepio AB, 2014.
 * www.percepio.com
 ******************************************************************************/

#ifndef TRCPORT_H
#define TRCPORT_H
#include <stdint.h>

/* If Win32 port */
#ifdef WIN32

	#undef _WIN32_WINNT
	#define _WIN32_WINNT 0x0600

	/* Standard includes. */
	#include <stdio.h>
	#include <windows.h>
	#include <direct.h>

/*******************************************************************************
 * The Win32 port by default saves the trace to file and then kills the
 * program when the recorder is stopped, to facilitate quick, simple tests
 * of the recorder.
 ******************************************************************************/
	#define WIN32_PORT_SAVE_WHEN_STOPPED 1
	#define WIN32_PORT_EXIT_WHEN_STOPPED 1

#endif

#define DIRECTION_INCREMENTING 1
#define DIRECTION_DECREMENTING 2

/******************************************************************************
 * Supported ports
 *
 * PORT_HWIndependent
 * A hardware independent fallback option for event timestamping. Provides low
 * resolution timestamps based on the OS tick.
 * This may be used on the Win32 port, but may also be used on embedded hardware
 * platforms. All time durations will be truncated to the OS tick frequency,
 * typically 1 KHz. This means that a task or ISR that executes in less than
 * 1 ms get an execution time of zero.
 *
 * PORT_APPLICATION_DEFINED
 * Allows for defining the port macros in other source code files.
 *
 * PORT_Win32
 * "Accurate" timestamping based on the Windows performance counter for Win32
 * builds. Note that this gives the host machine time, not the kernel time.
 *
 * Hardware specific ports
 * To get accurate timestamping, a hardware timer is necessary. Below are the
 * available ports. Some of these are "unofficial", meaning that
 * they have not yet been verified by Percepio but have been contributed by
 * external developers. They should work, otherwise let us know by emailing
 * support@percepio.com. Some work on any OS platform, while other are specific
 * to a certain operating system.
 *****************************************************************************/

/****** Port Name ********************** Code ***** Official ** OS Platform *********/
#define PORT_APPLICATION_DEFINED			-2	/*	-			-					*/
#define PORT_NOT_SET						-1	/*	-			-					*/
#define PORT_HWIndependent					0	/*	Yes			Any					*/
#define PORT_Win32							1	/*	Yes			FreeRTOS on Win32	*/
#define PORT_Atmel_AT91SAM7					2	/*	No			Any					*/
#define PORT_Atmel_UC3A0					3	/*	No			Any					*/
#define PORT_ARM_CortexM					4	/*	Yes			Any					*/
#define PORT_Renesas_RX600					5	/*	Yes			Any					*/
#define PORT_Microchip_dsPIC_AND_PIC24		6	/*	Yes			Any					*/
#define PORT_TEXAS_INSTRUMENTS_TMS570		7	/*	No			Any					*/
#define PORT_TEXAS_INSTRUMENTS_MSP430		8	/*	No			Any					*/
#define PORT_MICROCHIP_PIC32MX				9	/*	Yes			Any					*/
#define PORT_XILINX_PPC405					10	/*	No			FreeRTOS			*/
#define PORT_XILINX_PPC440					11	/*	No			FreeRTOS			*/
#define PORT_XILINX_MICROBLAZE				12	/*	No			Any					*/
#define PORT_NXP_LPC210X					13	/*	No			Any					*/
#define PORT_MICROCHIP_PIC32MZ				14	/*	Yes			Any					*/
#define PORT_ARM_CORTEX_A9					15	/*	No			Any					*/

#include "trcConfig.h"

/*******************************************************************************
 * IRQ_PRIORITY_ORDER
 *
 * Macro which should be defined as an integer of 0 or 1.
 *
 * This should be 0 if lower IRQ priority values implies higher priority
 * levels, such as on ARM Cortex M. If the opposite scheme is used, i.e.,
 * if higher IRQ priority values means higher priority, this should be 1.
 *
 * This setting is not critical. It is used only to sort and colorize the
 * interrupts in priority order, in case you record interrupts using
 * the vTraceStoreISRBegin and vTraceStoreISREnd routines.
 *
 ******************************************************************************
 *
 * HWTC Macros
 *
 * These four HWTC macros provides a hardware isolation layer representing a
 * generic hardware timer/counter used for driving the operating system tick,
 * such as the SysTick feature of ARM Cortex M3/M4, or the PIT of the Atmel
 * AT91SAM7X.
 *
 * HWTC_COUNT: The current value of the counter. This is expected to be reset
 * a each tick interrupt. Thus, when the tick handler starts, the counter has
 * already wrapped.
 *
 * HWTC_COUNT_DIRECTION: Should be one of:
 * - DIRECTION_INCREMENTING - for hardware timer/counters of incrementing type
 *	such as the PIT on Atmel AT91SAM7X.
 *	When the counter value reach HWTC_PERIOD, it is reset to zero and the
 *	interrupt is signaled.
 * - DIRECTION_DECREMENTING - for hardware timer/counters of decrementing type
 *	such as the SysTick on ARM Cortex M3/M4 chips.
 *	When the counter value reach 0, it is reset to HWTC_PERIOD and the
 *	interrupt is signaled.
 *
 * HWTC_PERIOD: The number of increments or decrements of HWTC_COUNT between
 * two OS tick interrupts. This should preferably be mapped to the reload
 * register of the hardware timer, to make it more portable between chips in the
 * same family. The macro should in most cases be (reload register + 1).
 * For FreeRTOS, this can in most cases be defined as
 * #define HWTC_PERIOD (configCPU_CLOCK_HZ / configTICK_RATE_HZ)
 *
 * HWTC_DIVISOR: If the timer frequency is very high, like on the Cortex M chips
 * (where the SysTick runs at the core clock frequency), the "differential
 * timestamping" used in the recorder will more frequently insert extra XTS
 * events to store the timestamps, which increases the event buffer usage.
 * In such cases, to reduce the number of XTS events and thereby get longer
 * traces, you use HWTC_DIVISOR to scale down the timestamps and frequency.
 * Assuming a OS tick rate of 1 KHz, it is suggested to keep the effective timer
 * frequency below 65 MHz to avoid an excessive amount of XTS events. Thus, a
 * Cortex M chip running at 72 MHZ should use a HWTC_DIVISOR of 2, while a
 * faster chip require a higher HWTC_DIVISOR value.
 *
 * The HWTC macros and vTracePortGetTimeStamp is the main porting issue
 * or the trace recorder library. Typically you should not need to change
 * the code of vTracePortGetTimeStamp if using the HWTC macros.
 *
 ******************************************************************************/

#if (SELECTED_PORT == PORT_Win32)
	// This can be used as a template for any free-running 32-bit counter
	#define HWTC_COUNT_DIRECTION DIRECTION_INCREMENTING
	#define HWTC_COUNT (ulGetRunTimeCounterValue())
	#define HWTC_PERIOD 0
	#define HWTC_DIVISOR 1

	// Please update according to your system...
	#define IRQ_PRIORITY_ORDER 1

#elif (SELECTED_PORT == PORT_HWIndependent)
	// OS Tick only (typically 1 ms resolution)
	#define HWTC_COUNT_DIRECTION DIRECTION_INCREMENTING
	#define HWTC_COUNT 0
	#define HWTC_PERIOD 1
	#define HWTC_DIVISOR 1

	// Please update according to your system...
	#define IRQ_PRIORITY_ORDER NOT_SET


#elif (SELECTED_PORT == PORT_ARM_CortexM)

	void prvTraceInitCortexM(void);
	
	#define REG_DEMCR (*(volatile unsigned int*)0xE000EDFC)
	#define REG_DWT_CTRL (*(volatile unsigned int*)0xE0001000)
	#define REG_DWT_CYCCNT (*(volatile unsigned int*)0xE0001004)
	#define REG_DWT_EXCCNT (*(volatile unsigned int*)0xE000100C)
	
	/* Bit mask for TRCENA bit in DEMCR - Global enable for DWT and ITM */
	#define DEMCR_TRCENA (1 << 24)

	/* Bit mask for NOPRFCNT bit in DWT_CTRL. If 1, DWT_EXCCNT is not supported */
	#define DWT_CTRL_NOPRFCNT (1 << 24)

	/* Bit mask for NOCYCCNT bit in DWT_CTRL. If 1, DWT_CYCCNT is not supported */
	#define DWT_CTRL_NOCYCCNT (1 << 25)

	/* Bit mask for EXCEVTENA_ bit in DWT_CTRL. Set to 1 to enable DWT_EXCCNT */
	#define DWT_CTRL_EXCEVTENA (1 << 18)

	/* Bit mask for EXCEVTENA_ bit in DWT_CTRL. Set to 1 to enable DWT_CYCCNT */
	#define DWT_CTRL_CYCCNTENA (1)

	#define PORT_SPECIFIC_INIT() prvTraceInitCortexM()

	extern uint32_t DWT_CYCLES_ADDED;
	
	#define HWTC_COUNT_DIRECTION DIRECTION_INCREMENTING
	#define HWTC_COUNT (REG_DWT_CYCCNT + DWT_CYCLES_ADDED)
	#define HWTC_PERIOD 0
	#define HWTC_DIVISOR 4

	#define IRQ_PRIORITY_ORDER 0 // lower IRQ priority values are more significant

#elif (SELECTED_PORT == PORT_Renesas_RX600)

	#include "iodefine.h"

	#define HWTC_COUNT_DIRECTION DIRECTION_INCREMENTING
	#define HWTC_COUNT (CMT0.CMCNT)
	#define HWTC_PERIOD (CMT0.CMCOR + 1)
	#define HWTC_DIVISOR 1
	#define IRQ_PRIORITY_ORDER 1 // higher IRQ priority values are more significant

#elif (SELECTED_PORT == PORT_MICROCHIP_PIC32MX || SELECTED_PORT == PORT_MICROCHIP_PIC32MZ)
	
	#define HWTC_COUNT_DIRECTION DIRECTION_INCREMENTING
	#define HWTC_COUNT (TMR1)
	#define HWTC_PERIOD (PR1 + 1)
	#define HWTC_DIVISOR 1
	#define IRQ_PRIORITY_ORDER 0 // lower IRQ priority values are more significant

#elif (SELECTED_PORT == PORT_Microchip_dsPIC_AND_PIC24)

	/* For Microchip PIC24 and dsPIC (16 bit) */

	/* Note: The trace library is designed for 32-bit MCUs and is slower than
		intended on 16-bit MCUs. Storing an event on a PIC24 takes about 70 usec.
		In comparison, this is 10-20 times faster on a 32-bit MCU... */

	#define HWTC_COUNT_DIRECTION DIRECTION_INCREMENTING
	#define HWTC_COUNT (TMR1)
	#define HWTC_PERIOD (PR1+1)
	#define HWTC_DIVISOR 1
	#define IRQ_PRIORITY_ORDER 0 // lower IRQ priority values are more significant

#elif (SELECTED_PORT == PORT_Atmel_AT91SAM7)

	/* UNOFFICIAL PORT - NOT YET VERIFIED BY PERCEPIO */

	#define HWTC_COUNT_DIRECTION DIRECTION_INCREMENTING
	#define HWTC_COUNT ((uint32_t)(AT91C_BASE_PITC->PITC_PIIR & 0xFFFFF))
	#define HWTC_PERIOD ((uint32_t)(AT91C_BASE_PITC->PITC_PIMR + 1))
	#define HWTC_DIVISOR 1
	#define IRQ_PRIORITY_ORDER 1 // higher IRQ priority values are more significant

#elif (SELECTED_PORT == PORT_Atmel_UC3A0)

	/* UNOFFICIAL PORT - NOT YET VERIFIED BY PERCEPIO */
	/* For Atmel AVR32 (AT32UC3A).*/

	#define HWTC_COUNT_DIRECTION DIRECTION_INCREMENTING
	#define HWTC_COUNT ((uint32_t)sysreg_read(AVR32_COUNT))
	#define HWTC_PERIOD ((uint32_t)(sysreg_read(AVR32_COMPARE) + 1))
	#define HWTC_DIVISOR 1
	#define IRQ_PRIORITY_ORDER 1 // higher IRQ priority values are more significant

#elif (SELECTED_PORT == PORT_NXP_LPC210X)

	/* UNOFFICIAL PORT - NOT YET VERIFIED BY PERCEPIO */
	/* Tested with LPC2106, but should work with most LPC21XX chips. */

	#define HWTC_COUNT_DIRECTION DIRECTION_INCREMENTING
	#define HWTC_COUNT *((uint32_t *)0xE0004008 )
	#define HWTC_PERIOD *((uint32_t *)0xE0004018 )
	#define HWTC_DIVISOR 1
	#define IRQ_PRIORITY_ORDER 0 // lower IRQ priority values are more significant

#elif (SELECTED_PORT == PORT_TEXAS_INSTRUMENTS_TMS570)

	/* UNOFFICIAL PORT - NOT YET VERIFIED BY PERCEPIO */

	#define RTIFRC0 *((uint32_t *)0xFFFFFC10)
	#define RTICOMP0 *((uint32_t *)0xFFFFFC50)
	#define RTIUDCP0 *((uint32_t *)0xFFFFFC54)
	#define HWTC_COUNT_DIRECTION DIRECTION_INCREMENTING
	#define HWTC_COUNT (RTIFRC0 - (RTICOMP0 - RTIUDCP0))
	#define HWTC_PERIOD (RTIUDCP0)
	#define HWTC_DIVISOR 1

	#define IRQ_PRIORITY_ORDER 0 // lower IRQ priority values are more significant

#elif (SELECTED_PORT == PORT_TEXAS_INSTRUMENTS_MSP430)

	/* UNOFFICIAL PORT - NOT YET VERIFIED BY PERCEPIO */

	#define HWTC_COUNT_DIRECTION DIRECTION_INCREMENTING
	#define HWTC_COUNT (TA0R)
	#define HWTC_PERIOD (((uint16_t)TACCR0)+1)
	#define HWTC_DIVISOR 1
	#define IRQ_PRIORITY_ORDER 1 // higher IRQ priority values are more significant

#elif (SELECTED_PORT == PORT_XILINX_PPC405)

	/* UNOFFICIAL PORT - NOT YET VERIFIED BY PERCEPIO */

	#define HWTC_COUNT_DIRECTION DIRECTION_DECREMENTING
	#define HWTC_COUNT mfspr(0x3db)
	#if (defined configCPU_CLOCK_HZ && defined configTICK_RATE_HZ) // Check if FreeRTOS
		/* For FreeRTOS only - found no generic OS independent solution for the PPC405 architecture. */
		#define HWTC_PERIOD ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) // Same as in port.c for PPC405
	#else
		/* Not defined for other operating systems yet */
		#error HWTC_PERIOD must be defined to give the number of hardware timer ticks per OS tick.
	#endif
	#define HWTC_DIVISOR 1
	#define IRQ_PRIORITY_ORDER 0 // lower IRQ priority values are more significant

#elif (SELECTED_PORT == PORT_XILINX_PPC440)

	/* UNOFFICIAL PORT - NOT YET VERIFIED BY PERCEPIO */
	/* This should work with most PowerPC chips */

	#define HWTC_COUNT_DIRECTION DIRECTION_DECREMENTING
	#define HWTC_COUNT mfspr(0x016)
	#if (defined configCPU_CLOCK_HZ && defined configTICK_RATE_HZ) // Check if FreeRTOS
		/* For FreeRTOS only - found no generic OS independent solution for the PPC440 architecture. */
		#define HWTC_PERIOD ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) // Same as in port.c for PPC440
	#else
		/* Not defined for other operating systems yet */
		#error HWTC_PERIOD must be defined to give the number of hardware timer ticks per OS tick.
	#endif
	#define HWTC_DIVISOR 1
	#define IRQ_PRIORITY_ORDER 0 // lower IRQ priority values are more significant

#elif (SELECTED_PORT == PORT_XILINX_MICROBLAZE)

	/* UNOFFICIAL PORT - NOT YET VERIFIED BY PERCEPIO */

	/* This should work with most Microblaze configurations.
	 * It uses the AXI Timer 0 - the tick interrupt source.
	 * If an AXI Timer 0 peripheral is available on your hardware platform, no modifications are required.
	 */
	#include "xtmrctr_l.h"

	#define HWTC_COUNT_DIRECTION DIRECTION_DECREMENTING
	#define HWTC_COUNT XTmrCtr_GetTimerCounterReg( XPAR_TMRCTR_0_BASEADDR, 0 )
 	#define HWTC_PERIOD (XTmrCtr_mGetLoadReg( XPAR_TMRCTR_0_BASEADDR, 0) + 1)
	#define HWTC_DIVISOR 16
	#define IRQ_PRIORITY_ORDER 0 // lower IRQ priority values are more significant

#elif (SELECTED_PORT == PORT_ARM_CORTEX_A9)

	/* UNOFFICIAL PORT - NOT YET VERIFIED BY PERCEPIO */

    #define CA9_MPCORE_PRIVCTR_CONTROL_PRESCALER_MASK    0x0000FF00
    #define CA9_MPCORE_PRIVCTR_CONTROL_PRESCALER_SHIFT   8

    #define CA9_MPCORE_PRIVCTR_PERIOD_REG       (*(volatile uint32_t*)(0xF8F00600 + 0))
    #define CA9_MPCORE_PRIVCTR_COUNTER_REG      (*(volatile uint32_t*)(0xF8F00600 + 4))
    #define CA9_MPCORE_PRIVCTR_CONTROL_REG      (*(volatile uint32_t*)(0xF8F00600 + 8))

    #define CA9_MPCORE_PRIVCTR_PRESCALER        (((CA9_MPCORE_PRIVCTR_CONTROL_REG & CA9_MPCORE_PRIVCTR_CONTROL_PRESCALER_MASK) >> CA9_MPCORE_PRIVCTR_CONTROL_PRESCALER_SHIFT) + 1)


    #define HWTC_COUNT_DIRECTION                DIRECTION_DECREMENTING
    #define HWTC_COUNT                          CA9_MPCORE_PRIVCTR_COUNTER_REG
    #define HWTC_PERIOD                         ((CA9_MPCORE_PRIVCTR_PERIOD_REG * CA9_MPCORE_PRIVCTR_PRESCALER) + 1)

    //NOTE: The private timer ticks with a very high frequency (half the core-clock usually),
    //but offers the possibility to apply a prescaler. Depending on the prescaler you set the
    //HWTC_DIVISOR may need to be raised. Refer to the notes at the beginning of this file
    //for more information.
    #define HWTC_DIVISOR 1

    #define IRQ_PRIORITY_ORDER 0  // lower IRQ priority values are more significant

#elif (SELECTED_PORT == PORT_APPLICATION_DEFINED)

	#if !( defined (HWTC_COUNT_DIRECTION) && defined (HWTC_COUNT) && defined (HWTC_PERIOD) && defined (HWTC_DIVISOR) && defined (IRQ_PRIORITY_ORDER) )
		#error SELECTED_PORT is PORT_APPLICATION_DEFINED but not all of the necessary constants have been defined.
	#endif

#elif (SELECTED_PORT != PORT_NOT_SET)

	#error "SELECTED_PORT had unsupported value!"
	#define SELECTED_PORT PORT_NOT_SET

#endif

#if (SELECTED_PORT != PORT_NOT_SET)

	#ifndef HWTC_COUNT_DIRECTION
	#error "HWTC_COUNT_DIRECTION is not set!"
	#endif

	#ifndef HWTC_COUNT
	#error "HWTC_COUNT is not set!"
	#endif

	#ifndef HWTC_PERIOD
	#error "HWTC_PERIOD is not set!"
	#endif

	#ifndef HWTC_DIVISOR
	#error "HWTC_DIVISOR is not set!"
	#endif

	#ifndef IRQ_PRIORITY_ORDER
	#error "IRQ_PRIORITY_ORDER is not set!"
	#elif (IRQ_PRIORITY_ORDER != 0) && (IRQ_PRIORITY_ORDER != 1)
	#error "IRQ_PRIORITY_ORDER has bad value!"
	#endif

	#if (HWTC_DIVISOR < 1)
	#error "HWTC_DIVISOR must be a non-zero positive value!"
	#endif

#endif
/*******************************************************************************
 * vTraceConsoleMessage
 *
 * A wrapper for your system-specific console "printf" console output function.
 * This needs to be correctly defined to see status reports from the trace
 * status monitor task (this is defined in trcUser.c).
 ******************************************************************************/
#define vTraceConsoleMessage(x)

/*******************************************************************************
 * vTracePortGetTimeStamp
 *
 * Returns the current time based on the HWTC macros which provide a hardware
 * isolation layer towards the hardware timer/counter.
 *
 * The HWTC macros and vTracePortGetTimeStamp is the main porting issue
 * or the trace recorder library. Typically you should not need to change
 * the code of vTracePortGetTimeStamp if using the HWTC macros.
 *
 ******************************************************************************/
void vTracePortGetTimeStamp(uint32_t *puiTimestamp);

#endif