You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
125 lines
4.5 KiB
C
125 lines
4.5 KiB
C
/*
|
|
* Copyright (c) 2015-2019 Cadence Design Systems, Inc.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
/*
|
|
* Xtensa-specific API for RTOS ports.
|
|
*/
|
|
|
|
#ifndef __XTENSA_API_H__
|
|
#define __XTENSA_API_H__
|
|
|
|
#include <xtensa/hal.h>
|
|
|
|
#include "xtensa_context.h"
|
|
|
|
|
|
/* Typedef for C-callable interrupt handler function */
|
|
typedef void (* xt_handler)( void * );
|
|
|
|
/* Typedef for C-callable exception handler function */
|
|
typedef void (* xt_exc_handler)( XtExcFrame * );
|
|
|
|
|
|
/*
|
|
* -------------------------------------------------------------------------------
|
|
* Call this function to set a handler for the specified exception.
|
|
*
|
|
* n - Exception number (type)
|
|
* f - Handler function address, NULL to uninstall handler.
|
|
*
|
|
* The handler will be passed a pointer to the exception frame, which is created
|
|
* on the stack of the thread that caused the exception.
|
|
*
|
|
* If the handler returns, the thread context will be restored and the faulting
|
|
* instruction will be retried. Any values in the exception frame that are
|
|
* modified by the handler will be restored as part of the context. For details
|
|
* of the exception frame structure see xtensa_context.h.
|
|
* -------------------------------------------------------------------------------
|
|
*/
|
|
extern xt_exc_handler xt_set_exception_handler( int n,
|
|
xt_exc_handler f );
|
|
|
|
|
|
/*
|
|
* -------------------------------------------------------------------------------
|
|
* Call this function to set a handler for the specified interrupt.
|
|
*
|
|
* n - Interrupt number.
|
|
* f - Handler function address, NULL to uninstall handler.
|
|
* arg - Argument to be passed to handler.
|
|
* -------------------------------------------------------------------------------
|
|
*/
|
|
extern xt_handler xt_set_interrupt_handler( int n,
|
|
xt_handler f,
|
|
void * arg );
|
|
|
|
|
|
/*
|
|
* -------------------------------------------------------------------------------
|
|
* Call this function to enable the specified interrupts.
|
|
*
|
|
* mask - Bit mask of interrupts to be enabled.
|
|
*
|
|
* Returns the previous state of the interrupt enables.
|
|
* -------------------------------------------------------------------------------
|
|
*/
|
|
extern unsigned int xt_ints_on( unsigned int mask );
|
|
|
|
|
|
/*
|
|
* -------------------------------------------------------------------------------
|
|
* Call this function to disable the specified interrupts.
|
|
*
|
|
* mask - Bit mask of interrupts to be disabled.
|
|
*
|
|
* Returns the previous state of the interrupt enables.
|
|
* -------------------------------------------------------------------------------
|
|
*/
|
|
extern unsigned int xt_ints_off( unsigned int mask );
|
|
|
|
|
|
/*
|
|
* -------------------------------------------------------------------------------
|
|
* Call this function to set the specified (s/w) interrupt.
|
|
* -------------------------------------------------------------------------------
|
|
*/
|
|
static inline void xt_set_intset( unsigned int arg )
|
|
{
|
|
xthal_set_intset( arg );
|
|
}
|
|
|
|
|
|
/*
|
|
* -------------------------------------------------------------------------------
|
|
* Call this function to clear the specified (s/w or edge-triggered)
|
|
* interrupt.
|
|
* -------------------------------------------------------------------------------
|
|
*/
|
|
static inline void xt_set_intclear( unsigned int arg )
|
|
{
|
|
xthal_set_intclear( arg );
|
|
}
|
|
|
|
|
|
#endif /* __XTENSA_API_H__ */
|