| 1 | /* |
| 2 | * RX Interrupt Control Unit |
| 3 | * |
| 4 | * Copyright (c) 2019 Yoshinori Sato |
| 5 | * |
| 6 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms and conditions of the GNU General Public License, |
| 10 | * version 2 or later, as published by the Free Software Foundation. |
| 11 | * |
| 12 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 15 | * more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along with |
| 18 | * this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 | */ |
| 20 | |
| 21 | #ifndef HW_INTC_RX_ICU_H |
| 22 | #define HW_INTC_RX_ICU_H |
| 23 | |
| 24 | #include "hw/core/sysbus.h" |
| 25 | #include "qom/object.h" |
| 26 | |
| 27 | enum TRG_MODE { |
| 28 | TRG_LEVEL = 0, |
| 29 | TRG_NEDGE = 1, /* Falling */ |
| 30 | TRG_PEDGE = 2, /* Raising */ |
| 31 | TRG_BEDGE = 3, /* Both */ |
| 32 | }; |
| 33 | |
| 34 | struct IRQSource { |
| 35 | enum TRG_MODE sense; |
| 36 | int level; |
| 37 | }; |
| 38 | |
| 39 | enum { |
| 40 | /* Software interrupt request */ |
| 41 | SWI = 27, |
| 42 | NR_IRQS = 256 |
| 43 | }; |
| 44 | |
| 45 | struct RXICUState { |
| 46 | /*< private >*/ |
| 47 | SysBusDevice parent_obj; |
| 48 | /*< public >*/ |
| 49 | |
| 50 | MemoryRegion memory; |
| 51 | struct IRQSource src[NR_IRQS]; |
| 52 | uint32_t nr_irqs; |
| 53 | uint8_t *map; |
| 54 | uint32_t nr_sense; |
| 55 | uint8_t *init_sense; |
| 56 | |
| 57 | uint8_t ir[NR_IRQS]; |
| 58 | uint8_t dtcer[NR_IRQS]; |
| 59 | uint8_t ier[NR_IRQS / 8]; |
| 60 | uint8_t ipr[142]; |
| 61 | uint8_t dmasr[4]; |
| 62 | uint16_t fir; |
| 63 | uint8_t nmisr; |
| 64 | uint8_t nmier; |
| 65 | uint8_t nmiclr; |
| 66 | uint8_t nmicr; |
| 67 | int16_t req_irq; |
| 68 | qemu_irq _irq; |
| 69 | qemu_irq _fir; |
| 70 | qemu_irq _swi; |
| 71 | }; |
| 72 | |
| 73 | #define TYPE_RX_ICU "rx-icu" |
| 74 | OBJECT_DECLARE_SIMPLE_TYPE(RXICUState, RX_ICU) |
| 75 | |
| 76 | #endif /* HW_INTC_RX_ICU_H */ |