/*
 *  Copyright (C) 2016-2017 Espressif Shanghai PTE LTD
 *  Copyright (C) 2015 Real Time Engineers Ltd.
 *
 *  All rights reserved
 *
 *  SPDX-License-Identifier: GPL-2.0 WITH freertos-exception-2.0
 *
 *  FreeRTOS is free software; you can redistribute it and/or modify it under
 *  the terms of the GNU General Public License (version 2) as published by the
 *  Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
 *
 ***************************************************************************
 *  >>!   NOTE: The modification to the GPL is included to allow you to     !<<
 *  >>!   distribute a combined work that includes FreeRTOS without being   !<<
 *  >>!   obliged to provide the source code for proprietary components     !<<
 *  >>!   outside of the FreeRTOS kernel.                                   !<<
 ***************************************************************************
 *
 *  FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
 *  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 *  FOR A PARTICULAR PURPOSE.  Full license text is available on the following
 *  link: https://www.FreeRTOS.org/a00114.html
 */

/* This header exists for performance reasons, in order to inline the
 * implementation of vPortCPUAcquireMutexIntsDisabled and
 * vPortCPUReleaseMutexIntsDisabled into the
 * vTaskEnterCritical/vTaskExitCritical functions in task.c as well as the
 * vPortCPUAcquireMutex/vPortCPUReleaseMutex implementations.
 *
 * Normally this kind of performance hack is over the top, but
 * vTaskEnterCritical/vTaskExitCritical is called a great
 * deal by FreeRTOS internals.
 *
 * It should be #included by freertos port.c or tasks.c, in esp-idf.
 *
 * The way it works is that it essentially uses portmux_impl.inc.h as a
 * generator template of sorts. When no external memory is used, this
 * template is only used to generate the vPortCPUAcquireMutexIntsDisabledInternal
 * and vPortCPUReleaseMutexIntsDisabledInternal functions, which use S32C1 to
 * do an atomic compare & swap. When external memory is used the functions
 * vPortCPUAcquireMutexIntsDisabledExtram and vPortCPUReleaseMutexIntsDisabledExtram
 * are also generated, which use uxPortCompareSetExtram to fake the S32C1 instruction.
 * The wrapper functions vPortCPUAcquireMutexIntsDisabled and
 * vPortCPUReleaseMutexIntsDisabled will then use the appropriate function to do the
 * actual lock/unlock.
 */
#include "soc/cpu.h"
#include "portable.h"

/* XOR one core ID with this value to get the other core ID */
#if (ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(4, 2, 0))
#define CORE_ID_XOR_SWAP    ( CORE_ID_PRO ^ CORE_ID_APP )
#else
#define CORE_ID_REGVAL_XOR_SWAP (CORE_ID_REGVAL_PRO ^ CORE_ID_REGVAL_APP)
#endif


/*Define the mux routines for use with muxes in internal RAM */
#define PORTMUX_AQUIRE_MUX_FN_NAME     vPortCPUAcquireMutexIntsDisabledInternal
#define PORTMUX_RELEASE_MUX_FN_NAME    vPortCPUReleaseMutexIntsDisabledInternal
#define PORTMUX_COMPARE_SET_FN_NAME    uxPortCompareSet
#include "portmux_impl.inc.h"
#undef PORTMUX_AQUIRE_MUX_FN_NAME
#undef PORTMUX_RELEASE_MUX_FN_NAME
#undef PORTMUX_COMPARE_SET_FN_NAME


#if defined( CONFIG_SPIRAM_SUPPORT )

    #define PORTMUX_AQUIRE_MUX_FN_NAME     vPortCPUAcquireMutexIntsDisabledExtram
    #define PORTMUX_RELEASE_MUX_FN_NAME    vPortCPUReleaseMutexIntsDisabledExtram
    #define PORTMUX_COMPARE_SET_FN_NAME    uxPortCompareSetExtram
    #include "portmux_impl.inc.h"
    #undef PORTMUX_AQUIRE_MUX_FN_NAME
    #undef PORTMUX_RELEASE_MUX_FN_NAME
    #undef PORTMUX_COMPARE_SET_FN_NAME

#endif


#ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
    #define PORTMUX_AQUIRE_MUX_FN_ARGS     portMUX_TYPE * mux, int timeout_cycles, const char * fnName, int line
    #define PORTMUX_RELEASE_MUX_FN_ARGS    portMUX_TYPE * mux, const char * fnName, int line
    #define PORTMUX_AQUIRE_MUX_FN_CALL_ARGS( x )     x, timeout_cycles, fnName, line
    #define PORTMUX_RELEASE_MUX_FN_CALL_ARGS( x )    x, fnName, line
#else
    #define PORTMUX_AQUIRE_MUX_FN_ARGS     portMUX_TYPE * mux, int timeout_cycles
    #define PORTMUX_RELEASE_MUX_FN_ARGS    portMUX_TYPE * mux
    #define PORTMUX_AQUIRE_MUX_FN_CALL_ARGS( x )     x, timeout_cycles
    #define PORTMUX_RELEASE_MUX_FN_CALL_ARGS( x )    x
#endif


static inline bool __attribute__( ( always_inline ) ) vPortCPUAcquireMutexIntsDisabled( PORTMUX_AQUIRE_MUX_FN_ARGS )
{
    #if defined( CONFIG_SPIRAM_SUPPORT )
        if( esp_ptr_external_ram( mux ) )
        {
            return vPortCPUAcquireMutexIntsDisabledExtram( PORTMUX_AQUIRE_MUX_FN_CALL_ARGS( mux ) );
        }
    #endif
    return vPortCPUAcquireMutexIntsDisabledInternal( PORTMUX_AQUIRE_MUX_FN_CALL_ARGS( mux ) );
}


static inline void vPortCPUReleaseMutexIntsDisabled( PORTMUX_RELEASE_MUX_FN_ARGS )
{
    #if defined( CONFIG_SPIRAM_SUPPORT )
        if( esp_ptr_external_ram( mux ) )
        {
            vPortCPUReleaseMutexIntsDisabledExtram( PORTMUX_RELEASE_MUX_FN_CALL_ARGS( mux ) );
            return;
        }
    #endif
    vPortCPUReleaseMutexIntsDisabledInternal( PORTMUX_RELEASE_MUX_FN_CALL_ARGS( mux ) );
}