| /* |
| * Copyright (c) 2016 Cadence Design Systems, Inc. |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /****************************************************************************** |
| Xtensa-specific API for RTOS ports. |
| ******************************************************************************/ |
| |
| #ifndef __XTENSA_API_H__ |
| #define __XTENSA_API_H__ |
| |
| #include <xtensa/hal.h> |
| #include "xtensa_rtos.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. |
| ------------------------------------------------------------------------------- |
| */ |
| #if XT_RTOS_IS_ZEPHYR_OS |
| #define _xt_set_interrupt_handler _irq_handler_set /* Map it to Zephyr's one */ |
| #else |
| extern xt_handler _xt_set_interrupt_handler(int n, xt_handler f, void * arg); |
| #endif |
| |
| |
| /* |
| ------------------------------------------------------------------------------- |
| Call this function to enable the specified interrupts. |
| |
| mask - Bit mask of interrupts to be enabled. |
| ------------------------------------------------------------------------------- |
| */ |
| extern void _xt_ints_on(unsigned int mask); |
| |
| |
| /* |
| ------------------------------------------------------------------------------- |
| Call this function to disable the specified interrupts. |
| |
| 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); |
| } |
| |
| |
| #endif /* __XTENSA_API_H__ */ |
| |