| /******************************************************************************* |
| * 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__ */ |