153 lines
4.7 KiB
C
153 lines
4.7 KiB
C
/****************************************************************************
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* arch/ceva/src/common/vintc.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_CEVA_SRC_COMMON_VINTC_H
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#define __ARCH_CEVA_SRC_COMMON_VINTC_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: up_vintc_initialize
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*
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* Description:
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* Initialize the VINTC.
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_HAVE_VINTC
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void up_vintc_initialize(void);
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#else
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static inline void up_vintc_initialize(void)
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{
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}
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#endif
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/****************************************************************************
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* Name: up_vintc_enable_irq
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*
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* Description:
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* On CEVA architectures, there are four levels of interrupt enabling:
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* (1) at the global level(up_irq_enable)
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* (2) at the DSP level(up_enable_irq)
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* (2) at the VINTC level
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* (3) at the device level
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* In order to receive interrupts, they must be enabled at all four levels.
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*
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* This function implements enabling of the device specified by 'irq'
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* at the VINTC level if supported by the architecture.
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_HAVE_VINTC
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void up_vintc_enable_irq(int irq);
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#else
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static inline void up_vintc_enable_irq(int irq)
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{
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}
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#endif
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/****************************************************************************
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* Name: up_vintc_disable_irq
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*
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* Description:
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* This function implements disabling of the device specified by 'irq'
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* at the VINTC level if supported by the architecture(up_irq_save()
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* supports the global level, the device level is hardware specific).
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_HAVE_VINTC
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void up_vintc_disable_irq(int irq);
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#else
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static inline void up_vintc_disable_irq(int irq)
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{
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}
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#endif
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/****************************************************************************
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* Name: up_vintc_prioritize_irq
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*
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* Description:
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* Set the priority of an IRQ.
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*
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****************************************************************************/
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#if defined(CONFIG_ARCH_HAVE_VINTC) && defined(CONFIG_ARCH_IRQPRIO)
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int up_vintc_prioritize_irq(int irq, int priority);
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#else
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static inline int up_vintc_prioritize_irq(int irq, int priority)
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{
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return 0; /* Not a critical error */
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}
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#endif
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/****************************************************************************
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* Name: up_vintc_trigger_irq
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*
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* Description:
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* Trigger an IRQ by software.
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*
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****************************************************************************/
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#if defined(CONFIG_ARCH_HAVE_VINTC) && defined(CONFIG_ARCH_HAVE_IRQTRIGGER)
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void up_vintc_trigger_irq(int irq);
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#else
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static inline void up_vintc_trigger_irq(int irq)
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{
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}
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#endif
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/****************************************************************************
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* Name: up_vintc_handler
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*
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* Description:
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* This function address must be sent from VINTC on VECTOR input in order
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* to let DSP could jump to the appropriate interrupt handler location.
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* Note that VINTC may pass this address to the hardware register, but
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* ARCH specific code is responsible to implement this function.
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*
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****************************************************************************/
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void up_vintc_handler(void);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ARCH_CEVA_SRC_COMMON_VINTC_H */
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