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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | /* arcv2_irq_unit.h - ARCv2 Interrupt Unit device driver */ /* * Copyright (c) 2014 Wind River Systems, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef _ARC_V2_IRQ_UNIT__H #define _ARC_V2_IRQ_UNIT__H #ifdef __cplusplus extern "C" { #endif /* configuration flags for interrupt unit */ #define _ARC_V2_INT_DISABLE 0 #define _ARC_V2_INT_ENABLE 1 #define _ARC_V2_INT_LEVEL 0 #define _ARC_V2_INT_PULSE 1 #ifndef _ASMLANGUAGE /* * WARNING: * * All APIs provided by this file must be invoked with INTERRUPTS LOCKED. The * APIs themselves are writing the IRQ_SELECT, selecting which IRQ's registers * it wants to write to, then write to them: THIS IS NOT AN ATOMIC OPERATION. * * Not locking the interrupts inside of the APIs allows a caller to: * * - lock interrupts * - call many of these APIs * - unlock interrupts * * thus being more efficient then if the APIs themselves would lock * interrupts. */ /* * @brief Enable/disable interrupt * * Enables or disables the specified interrupt * * @return N/A */ static inline void _arc_v2_irq_unit_irq_enable_set( int irq, unsigned char enable ) { _arc_v2_aux_reg_write(_ARC_V2_IRQ_SELECT, irq); _arc_v2_aux_reg_write(_ARC_V2_IRQ_ENABLE, enable); } /* * @brief Enable interrupt * * Enables the specified interrupt * * @return N/A */ static inline void _arc_v2_irq_unit_int_enable(int irq) { _arc_v2_irq_unit_irq_enable_set(irq, _ARC_V2_INT_ENABLE); } /* * @brief Disable interrupt * * Disables the specified interrupt * * @return N/A */ static inline void _arc_v2_irq_unit_int_disable(int irq) { _arc_v2_irq_unit_irq_enable_set(irq, _ARC_V2_INT_DISABLE); } /* * @brief Set interrupt priority * * Set the priority of the specified interrupt * * @return N/A */ static inline void _arc_v2_irq_unit_prio_set(int irq, unsigned char prio) { _arc_v2_aux_reg_write(_ARC_V2_IRQ_SELECT, irq); _arc_v2_aux_reg_write(_ARC_V2_IRQ_PRIORITY, prio); } void _arc_v2_irq_unit_int_eoi(int irq); void _arc_v2_irq_unit_init(void); #endif /* _ASMLANGUAGE */ #ifdef __cplusplus } #endif #endif /* _ARC_V2_IRQ_UNIT__H */ |