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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 | # Multilevel interrupt configuration # Copyright (c) 2017 Intel Corporation # Copyright (c) 2018 Foundries.io # SPDX-License-Identifier: Apache-2.0 config MULTI_LEVEL_INTERRUPTS bool "Multi-level interrupt support" depends on GEN_SW_ISR_TABLE help Multiple levels of interrupts are normally used to increase the number of addressable interrupts in a system. For example, if two levels are used, a second level interrupt aggregator would combine all interrupts routed to it into one IRQ line in the first level interrupt controller. If three levels are used, a third level aggregator combines its input interrupts into one IRQ line at the second level. The number of interrupt levels is usually determined by the hardware. (The term "aggregator" here means "interrupt controller".) config MAX_IRQ_PER_AGGREGATOR int "Max IRQs per interrupt aggregator" default 0 depends on MULTI_LEVEL_INTERRUPTS help The maximum number of interrupt inputs to any aggregator in the system. config 2ND_LEVEL_INTERRUPTS bool "Second-level interrupt support" depends on MULTI_LEVEL_INTERRUPTS help Second level interrupts are used to increase the number of addressable interrupts in a system. config 2ND_LVL_ISR_TBL_OFFSET int "Offset in _sw_isr_table for level 2 interrupts" default 0 depends on 2ND_LEVEL_INTERRUPTS help This is the offset in _sw_isr_table, the generated ISR handler table, where storage for 2nd level interrupt ISRs begins. This is typically allocated after ISRs for level 1 interrupts. config NUM_2ND_LEVEL_AGGREGATORS int "Total number of second level interrupt aggregators" range 1 8 default 1 depends on 2ND_LEVEL_INTERRUPTS help The number of level 2 interrupt aggregators to support. Each aggregator can manage at most MAX_IRQ_PER_AGGREGATOR level 2 interrupts. prev-level-num = 1 cur-level-num = 2 cur-level = 2ND aggregator = 0 rsource "Kconfig.multilevel.aggregator_template" aggregator = 1 rsource "Kconfig.multilevel.aggregator_template" aggregator = 2 rsource "Kconfig.multilevel.aggregator_template" aggregator = 3 rsource "Kconfig.multilevel.aggregator_template" aggregator = 4 rsource "Kconfig.multilevel.aggregator_template" aggregator = 5 rsource "Kconfig.multilevel.aggregator_template" aggregator = 6 rsource "Kconfig.multilevel.aggregator_template" aggregator = 7 rsource "Kconfig.multilevel.aggregator_template" config 3RD_LEVEL_INTERRUPTS bool "Third-level interrupt support" depends on 2ND_LEVEL_INTERRUPTS help Third level interrupts are used to increase the number of addressable interrupts in a system. config NUM_3RD_LEVEL_AGGREGATORS int "Total number of third level interrupt aggregators" range 1 8 default 1 depends on 3RD_LEVEL_INTERRUPTS help The number of level 3 interrupt aggregators to support. Each aggregator can manage at most MAX_IRQ_PER_AGGREGATOR level 3 interrupts. config 3RD_LVL_ISR_TBL_OFFSET int "Offset in _sw_isr_table for level 3 interrupts" default 0 depends on 3RD_LEVEL_INTERRUPTS help This is the offset in _sw_isr_table, the generated ISR handler table, where storage for 3rd level interrupt ISRs begins. This is typically allocated after ISRs for level 2 interrupts. prev-level-num = 2 cur-level-num = 3 cur-level = 3RD aggregator = 0 rsource "Kconfig.multilevel.aggregator_template" aggregator = 1 rsource "Kconfig.multilevel.aggregator_template" aggregator = 2 rsource "Kconfig.multilevel.aggregator_template" aggregator = 3 rsource "Kconfig.multilevel.aggregator_template" aggregator = 4 rsource "Kconfig.multilevel.aggregator_template" aggregator = 5 rsource "Kconfig.multilevel.aggregator_template" aggregator = 6 rsource "Kconfig.multilevel.aggregator_template" aggregator = 7 rsource "Kconfig.multilevel.aggregator_template" |