105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
/*
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* Copyright (c) 2016 Cadence Design Systems, Inc.
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* SPDX-License-Identifier: Apache-2.0
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*/
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/******************************************************************************
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Xtensa-specific API for RTOS ports.
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******************************************************************************/
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#ifndef __XTENSA_API_H__
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#define __XTENSA_API_H__
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#include <xtensa/hal.h>
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#include "xtensa_rtos.h"
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#include "xtensa_context.h"
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/* Typedef for C-callable interrupt handler function */
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typedef void (*xt_handler)(void *);
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/* Typedef for C-callable exception handler function */
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typedef void (*xt_exc_handler)(XtExcFrame *);
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/*
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-------------------------------------------------------------------------------
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Call this function to set a handler for the specified exception.
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n - Exception number (type)
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f - Handler function address, NULL to uninstall handler.
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The handler will be passed a pointer to the exception frame, which is created
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on the stack of the thread that caused the exception.
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If the handler returns, the thread context will be restored and the faulting
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instruction will be retried. Any values in the exception frame that are
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modified by the handler will be restored as part of the context. For details
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of the exception frame structure see xtensa_context.h.
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-------------------------------------------------------------------------------
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*/
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extern xt_exc_handler _xt_set_exception_handler(int n, xt_exc_handler f);
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/*
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-------------------------------------------------------------------------------
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Call this function to set a handler for the specified interrupt.
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n - Interrupt number.
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f - Handler function address, NULL to uninstall handler.
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arg - Argument to be passed to handler.
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-------------------------------------------------------------------------------
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*/
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#if XT_RTOS_IS_ZEPHYR_OS
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#define _xt_set_interrupt_handler _irq_handler_set /* Map it to Zephyr's one */
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#else
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extern xt_handler _xt_set_interrupt_handler(int n, xt_handler f, void * arg);
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#endif
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/*
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-------------------------------------------------------------------------------
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Call this function to enable the specified interrupts.
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mask - Bit mask of interrupts to be enabled.
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-------------------------------------------------------------------------------
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*/
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extern void _xt_ints_on(unsigned int mask);
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/*
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-------------------------------------------------------------------------------
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Call this function to disable the specified interrupts.
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mask - Bit mask of interrupts to be disabled.
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-------------------------------------------------------------------------------
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*/
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extern void _xt_ints_off(unsigned int mask);
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/*
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-------------------------------------------------------------------------------
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Call this function to set the specified (s/w) interrupt.
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-------------------------------------------------------------------------------
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*/
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static inline void _xt_set_intset(unsigned int arg)
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{
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xthal_set_intset(arg);
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}
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/*
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-------------------------------------------------------------------------------
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Call this function to clear the specified (s/w or edge-triggered)
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interrupt.
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-------------------------------------------------------------------------------
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*/
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static inline void _xt_set_intclear(unsigned int arg)
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{
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xthal_set_intclear(arg);
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}
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#endif /* __XTENSA_API_H__ */
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