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Dependencies: MAX44000 PWM_Tone_Library nexpaq_mdk
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interrupts.h
00001 /* 00002 * Copyright (c) 2013-2015, ARM Limited, All Rights Reserved 00003 * SPDX-License-Identifier: Apache-2.0 00004 * 00005 * Licensed under the Apache License, Version 2.0 (the "License"); you may 00006 * not use this file except in compliance with the License. 00007 * You may obtain a copy of the License at 00008 * 00009 * http://www.apache.org/licenses/LICENSE-2.0 00010 * 00011 * Unless required by applicable law or agreed to in writing, software 00012 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 00013 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00014 * See the License for the specific language governing permissions and 00015 * limitations under the License. 00016 */ 00017 #ifndef __UVISOR_API_INTERRUPTS_H__ 00018 #define __UVISOR_API_INTERRUPTS_H__ 00019 00020 #include "api/inc/uvisor_exports.h" 00021 #include <stdint.h> 00022 00023 UVISOR_EXTERN void vIRQ_SetVector(uint32_t irqn, uint32_t vector); 00024 UVISOR_EXTERN uint32_t vIRQ_GetVector(uint32_t irqn); 00025 UVISOR_EXTERN void vIRQ_EnableIRQ(uint32_t irqn); 00026 UVISOR_EXTERN void vIRQ_DisableIRQ(uint32_t irqn); 00027 UVISOR_EXTERN void vIRQ_ClearPendingIRQ(uint32_t irqn); 00028 UVISOR_EXTERN void vIRQ_SetPendingIRQ(uint32_t irqn); 00029 UVISOR_EXTERN uint32_t vIRQ_GetPendingIRQ(uint32_t irqn); 00030 UVISOR_EXTERN void vIRQ_SetPriority(uint32_t irqn, uint32_t priority); 00031 UVISOR_EXTERN uint32_t vIRQ_GetPriority(uint32_t irqn); 00032 UVISOR_EXTERN int vIRQ_GetLevel(void); 00033 00034 /** Disable all interrupts for the currently active box. 00035 * 00036 * Calling this function from a box only affects the interrupts of that box. 00037 * System interrupts and interrupts owned by other boxes are left untouched. 00038 * 00039 * Successive calls to this function increase an internal counter that is used 00040 * by uVisor to decide when to re-enable IRQs. The related call 00041 * ::vIRQ_EnableIRQ() decreases this counter. Only when the counter is 0 the 00042 * interrupts are re-enabled for that box. 00043 * 00044 * This guarantees that code that disables IRQs will not accidentally have them 00045 * re-enabled by a nested function that it calls before the expected call to 00046 * ::vIRQ_EnableAll(). Example: 00047 * 00048 * vIRQ_DisableAll(); counter = 1; IRQs are now disabled. 00049 * some_function(); counter = 2, then counter = 1; IRQs are still disabled. 00050 * vIRQ_EnableAll(); counter = 0; IRQs are now re-enabled. 00051 * 00052 * where some_function() also has a disable/enable pair. */ 00053 UVISOR_EXTERN void vIRQ_DisableAll(void); 00054 00055 /** Re-enable all interrupts that were previously disabled for the currently 00056 * active box. 00057 * 00058 * This function only re-enables interrupt if the uVisor internal counter is set 00059 * to 0, to make sure that nested disabling of IRQs is still effective. See 00060 * ::vIRQ_DisableAll for more information. */ 00061 UVISOR_EXTERN void vIRQ_EnableAll(void); 00062 00063 #endif /* __UVISOR_API_INTERRUPTS_H__ */
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