131 lines
3.4 KiB
C
131 lines
3.4 KiB
C
/****************************************************************************
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* arch/sparc/src/sparc_v8/sparc_v8_irq.c
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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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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <arch/irq.h>
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#include <arch/types.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_irq_save
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*
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* Description:
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* Save the current interrupt state and disable interrupts.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* Interrupt state prior to disabling interrupts.
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*
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****************************************************************************/
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irqstate_t up_irq_save(void)
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{
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/* register irqstate_t status; */
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register irqstate_t ret;
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/* Get psr status */
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/* sparc_get_psr( status ); */
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/* Save the status */
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ret = sparc_disable_interrupts();
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/* BM3803_REG.int_mask = 0; */
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return ret; /* Return status before interrupts disabled */
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}
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/****************************************************************************
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* Name: up_irq_restore
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*
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* Description:
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* Restore the previous up_irq_enable state (i.e., the one previously
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* returned by up_irq_save())
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*
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* Input Parameters:
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* state - The interrupt state to be restored.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void up_irq_restore(irqstate_t irqstate)
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{
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sparc_enable_interrupts(irqstate);
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}
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/****************************************************************************
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* Name: up_irq_enable
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*
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* Description:
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* Enable interrupts
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*
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* Input Parameters:
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* None.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void up_irq_enable(void)
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{
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uint32_t psr;
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psr = sparc_disable_interrupts();
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sparc_enable_interrupts(psr);
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}
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/****************************************************************************
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* Name: up_irq_disable
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*
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* Description:
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* Disable interrupts
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*
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* Input Parameters:
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* None.
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*
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* Returned Value:
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* the entire PSR contents
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*
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****************************************************************************/
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uint32_t up_irq_disable(void)
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{
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uint32_t psr;
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psr = sparc_disable_interrupts();
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return psr;
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}
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