/******************************************************************************* | |
* Copyright (c) 2006-2015 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. The handler | |
* will be installed on the core that calls this function. | |
* | |
* 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. The handler | |
* will be installed on the core that calls this function. | |
* | |
* 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 on the core that runs | |
* this code. | |
* | |
* mask - Bit mask of interrupts to be enabled. | |
* ------------------------------------------------------------------------------- | |
*/ | |
extern void xt_ints_on( unsigned int mask ); | |
/* | |
* ------------------------------------------------------------------------------- | |
* Call this function to disable the specified interrupts on the core that runs | |
* this code. | |
* | |
* mask - Bit mask of interrupts to be disabled. | |
* ------------------------------------------------------------------------------- | |
*/ | |
extern void 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 ); | |
} | |
/* | |
* ------------------------------------------------------------------------------- | |
* Call this function to get handler's argument for the specified interrupt. | |
* | |
* n - Interrupt number. | |
* ------------------------------------------------------------------------------- | |
*/ | |
extern void * xt_get_interrupt_handler_arg( int n ); | |
#endif /* __XTENSA_API_H__ */ |